NOAA KLM User's Guide

Section 4.1

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4.1 HRPT System

4.1.1 General

The High Resolution Picture Transmission (HRPT) system provides data from all spacecraft instruments at a rate of 665,400 bps. The S-band realtime transmission consists of the digitized unprocessed output of five AVHRR/3 channels, plus the TIP (HIRS/3 for NOAA KLM and HIRS/4 on NOAA-N, -P, SBUV/2, SEM, DCS/2) data and AMSU data. All information necessary to calibrate the instrument outputs is included in the data stream.

During NOAA-K activation and evaluation, it was determined that AMSU-A channels 7 and 15 were switched. This switch should be transparent to Level 1b users as the channels were corrected (switched back) by the ingest software, however, direct readout users should be aware of this problem. Only the radiometric data was affected, the housekeeping temperatures of channels 15 and 7 oscillators are correct as they are now. The antenna patterns, beam efficiency and beam widths are correct as they were not affected by the switch. Band pass for channels 7 and 15 was not affected due to extremely broad rf-detectors.

4.1.2 Transmission Characteristics

The S-band transmission of time multiplexed, digital data is in a split phase format. For NOAA KLM, split phase data "0" is defined as being +68 degrees phase during the first half of the bit period and -68 degrees during the second half of the bit period. The split phase data "1" is defined as being -68 degrees phase during the first half of the bit period and +68 degrees phase during the second half of the bit period, for NOAA KLM. Note, the NOAA-N,-P satellites have a slightly different phase angle (see Table 4.1.2-2). Table 4.1.2-1 shows the general characteristics of the HRPT transmission system, while the general HRPT parameters for both NOAA KLM and NOAA-N,-P are shown in Table 4.1.2-2.

Line Rate 360 lines/minute
Data Channels 5 transmitted, 6 available
Data Resolution 1.1 km
Carrier Modulation Digital split phase, phase modulated
Transmitter Frequency (MHz) 1698.0 or 1707.0 MHz primary, 1702.5 MHz secondary, subject to change at any time. For the latest information on individual POES spacecraft, refer to NOAA/NESDIS/OSO's website: http://www.oso.noaa.gov/poesstatus/index.asp
Transmitter Power (EOL) 6.35 W (38.03 dBm)
Radiated Power (dBm, @ 63 degrees) 40.13
Polarization:
STX1
STX2
STX3
 
RCP
LCP (See Note 1.)
RCP
Note:
1). Except when STX2 is connected to the emergency omni antenna which is also RCP.

Table 4.1.2-2. HRPT Parameters for NOAA KLM and NOAA-N,-P.
Parameter NOAA KLM NOAA-N,-P
Major Frame
Rate 2 major frames/sec 2 major frames/sec
Minor Frames/Major Frame 3 3
Minor Frame
Rate 6 minor frames/sec 6 minor frames/sec
Number of words 11,090 11,090
Format See Table 4.1.3.1-1 See Table 4.1.3.2-1
Word Parameters
Rate 66,540 words/sec 66,540 words/sec
Number of bits/word 10 10
Order Bit 1=MSB, Bit 10=LSB Bit 1=MSB, Bit 10=LSB
Bit Parameters
Rate 665,400 bits/sec 665,400 bits/sec
Format Split phase Split phase
Data "0" +68/-68 degrees +67/-67 degrees
Data "1" -68/+68 degrees -67/+67 degrees

4.1.3 HRPT Minor Frame Format

The MIRP outputs the HRPT format simultaneously with the Automatic Picture Transmission (APT), Global Area Coverage (GAC) and Local Area Coverage (LAC) formats. GAC and LAC data are not considered real time, as these data are stored on the spacecraft digital recorders for readout by the CDA stations. The HRPT data format consists of a major frame which is subdivided into three minor frames.

Of special note is the flag in the telemetry (Word 7, Bit 10) which will indicate which of AVHRR/3 channel 3 sensors (3A or 3B) is operating. When channel 3B is selected, the patch temperature data is output every scan line (during the backscan), and every other scan line when channel 3A is selected. The data output will switch instantaneously between 3A or 3B upon command, even if the scan is in the middle of a line. However, the way the flag operates there is one scan line of uncertainty when switching from 3B to 3A, and two lines of uncertainty when switching from 3A to 3B.

4.1.3.1 HRPT Minor Frame Format for NOAA KLM

On NOAA KLM, TIP and AMSU data are updated at the major frame rate. That is, the three minor frames which make up the major frame will contain TIP data in the first minor frame, backfill in the second minor frame, and AMSU data from the AIP, in the third minor frame. In the previous series of satellites (NOAA E-J), the major frame consisted of three minor frames of only the TIP data. The details of the HRPT, AIP, and TIP minor frame formats for NOAA KLM are shown in Tables 4.1.3.1-1, 4.1.5.1-1 and 4.3.3.1-1, respectively.

Table 4.1.3.1-1 describes the minor frame format for HRPT on the NOAA KLM satellites.

Table 4.1.3.1-1. HRPT Minor Frame Format for NOAA KLM.
Function No. of Words Word Position Bit No. Plus Word Code &
1 2 3 4 5 6 7 8 9 10 Meaning
Notes
Frame Sync 6 1 1 0 1 0 0 0 0 1 0 0  
2 0 1 0 1 1 0 1 1 1 1  
3 1 1 0 1 0 1 1 1 0 0 1
4 0 1 1 0 0 1 1 1 0 1  
5 1 0 0 0 0 0 1 1 1 1  
6 0 0 1 0 0 1 0 1 0 1  
ID 2 7 Bit 1; 0=Internal Sync; 1=AVHRR Sync
Bits 2 & 3; 00=Not an HRPT frame but a GAC frame;01=Minor Frame #1; 10=Minor Frame #2; 11=Minor Frame #3
Bits 4-7; Spacecraft Addresses; Bit 4=MSB, BIT 7=LSB
Bit 8; 0=Frame Stable; 1=Frame Resync Occurred
Bit 9; 1=Normal AVHRR input, 0=PN AVHRR Input
Bit 10; 0=AVHRR Ch3B, 1=AVHRR Ch3A
 
8 Bits 1-10; undefined Spare  
Time Code 4 9 Bits 1-9; Binary day count; Bit 1 = MSB; Bit 9 = LSB
Bit 10; 0; spare
 
10 Bit 1-3; 101, spare Bits 4-10; Part of Binary msec of day
count; Bit 4=MSB
 
11 Bit 1-10; Part of Binary msec of day count;  
12 Bit 1-10; Remainder of Binary msec of day count; Bit 10=LSB  
Telemetry 10 13 Ramp Calibration AVHRR Channel #1  
14 Ramp Calibration AVHRR Channel #2  
15 Ramp Calibration AVHRR Channel #3  
16 Ramp Calibration AVHRR Channel #4  
17 Ramp Calibration AVHRR Channel #5  
18 PRT Reading 1  
19 PRT Reading 2  
20 PRT Reading 3 2
21 Channel 3 patch Temp.  
22 Spare - Undefined  
Calibration Target View 30 23
thru
52
10 words of calibration target view data from each AVHRR channel 3, 4, and 5. These data are time multiplexed as chan 3 (word 1), chan 4 (word 1),
chan 5 (word 1), chan 3 (word 2), chan 4 (word 2), chan 5 (word2), etc.
 
Space Data 50 53
thru
102
10 words of space scan data from each AVHRR channel1, 2, 3, 4, and 5. These data are time multiplexed as chan1 (word 1), chan 2 (word 1), chan 3 (word 1), chan 4 (word 1) chan 5 (word 1), chan 1 (word 2), chan 2 (word2), chan 3 (word 2), chan 4 (word 2), chan 5 (word 2),etc.  
Sync Data 1 103 Bit 1; 0 = AVHRR sync early; 1 = AVHRR sync late, Bits 2-10; 9 bit binary count of 0.9984 MHz periods; Bit 2 = MSB, Bit 10=LSB  
Data Words 520 104
thru
623
3 sets of data corresponding to three HRPT minor frames per HRPT major frame.

First HRPT minor frame: The 520 words contain 5 TIP minor frames of TIP data (104 TIP data words per TIP minor frame) Bits 1-8: Exact format as generated by TIP. Bit 9: Even parity check over Bits 1-8. Bit 10: Inverted Bit 1.

Second HRPT minor frame: The 520 words shall consist of five frames (104 words per frame) of spare data in the same form as spare words 624-750.

Third HRPT minor frame: The 520 words shall consist of five frames (104 words per frame)of AMSU data from the AIP. Bits 1-8: Exact format as generated by AIP.

Bit 9: Even parity check over Bits 1-8.

Bit 10: Inverted Bit 1.

3
Spare Words 127 624 0 1 0 0 0 0 1 0 0 1  
625 0 1 1 1 1 0 1 1 1 0  
626 1 1 1 0 1 0 1 0 1 0  
627 0 0 1 1 1 0 1 1 1 0  
628 0 0 1 0 1 1 0 0 0 0  
... ... 4
748 1 0 1 1 0 1 1 1 0 1  
749 0 0 0 1 0 0 1 1 1 0  
750 1 1 1 1 0 0 1 0 0 1  
Earth Data 10,240 751 Chan 1 - Sample 1  
752 Chan 2 - Sample 1  
753 Chan 3 - Sample 1  
754 Chan 4 - Sample 1  
755 Chan 5 - Sample 1  
756 Chan 1 - Sample 2  
... ... 5
10,985 Chan 5 - Sample 2047  
10,986 Chan 1 - Sample 2048  
10,987 Chan 2 - Sample 2048  
10,988 Chan 3 - Sample 2048  
10,989 Chan 4 - Sample 2048  
10,990 Chan 5 - Sample 2048  
Auxiliary Sync 100 10,991 1 1 1 1 1 0 0 0 1 0  
10,992 1 1 1 1 1 1 0 0 1 1  
10,993 0 1 1 0 1 1 0 1 0 1  
10,994 1 0 1 0 1 1 1 1 0 1  
... ... 6
11,089 0 1 1 1 1 1 0 0 0 0  
11,090 1 1 1 1 0 0 1 1 0 0  
Notes:
1) First 60 bits from 63 bit PN generator started in the all 1's state. The generator polynomial is x6+X5+X2+X+1
2) AVHRR Internal Target Temperature Data. Three readings from one of the four platinum resistance thermometers (PRT). A different PRT is sampled for each scan; every fifth scan will contain a reference value of 0 in place of each reading.
3) 104 words includes 103 words of the AMSU frame plus the first word of TIP
4) Derived by inverting the output of a 1023 bit PN sequence provided by a feedback shift register generating the polynomial: X10+X5+X2+X+1. The generator is started in all 1's state at the beginning of word 7 of each minor frame.
5) Each minor frame contains the data obtained during one Earth scan of the AVHRR sensor. The data from the five sensor channels of the AVHRR are time multiplexed as indicated.
6) Derived from the non-inverted output of a 1023 bit PN sequence provided by a feedback shift register generating the polynomial: X10+X5+X2+X+1. The generator is started in the all 1's state at the beginning of word 10,991.

4.1.3.2 HRPT Minor Frame Format for NOAA-N,-P

On NOAA-N,-P, the HRPT format provides a major frame, which is made up of three minor frames. TIP and AMSU/MHS data are updated at the major frame rate. That is, the three minor frames, which make up a major frame, will contain TIP data in the first minor frame, backfill in the second minor frame, and AMSU/MHS data in the third minor frame. The HRPT is provided in a split phase format to the S-Band Transmitter. The S-band transmission of time multiplexed, digital data is in a split phase format. The split phase data "0" is defined as being +67 phase during the first half of the bit period and -67 phase during the second half of the bit period. The split phase data "1" is defined as being -67 phase during the first half of the bit period and +67 during the second half of the bit period. The time code contained in each minor frame indicates the spacecraft time 1.13 ± 0.5 milliseconds before the beginning of bit 1 of word 1. The HRPT minor frame format for NOAA-N,-P is shown in Table 4.1.3.2-1.

Table 4.1.3.2-1. HRPT Minor Frame Format for NOAA-N, -P.
Function No. of
Words
Word
Position
Bit No. Plus Word Code &
1 2 3 4 5 6 7 8 9 10 Meaning
Notes
Frame Sync 6 1 1 0 1 0 0 0 0 1 0 0  
2 0 1 0 1 1 0 1 1 1 1  
3 1 1 0 1 0 1 1 1 0 0 1
4 0 1 1 0 0 1 1 1 0 1  
5 1 0 0 0 0 0 1 1 1 1  
6 0 0 1 0 0 1 0 1 0 1  
ID 2 7 Bit 1; 0=Internal Sync; 1=AVHRR Sync
Bits 2 & 3; 00=Not an HRPT frame but a GAC frame; 01=Minor Frame #1; 10=Minor Frame #2; 11=Minor Frame #3
Bits 4-7; Spacecraft Addresses; Bit 4=MSB, BIT 7=LSB
Bit 8; 0=Frame Stable; 1=Frame Resync Occurred
Bit 9; 1=Normal AVHRR input, 0=PN AVHRR Input
Bit 10; 0=AVHRR Ch3B, 1=AVHRR Ch3A
 
8 Bits 1-10; undefined Spare  
Time Code 4 9 Bits 1-9; Binary day count; Bit 1 = MSB; Bit 9 = LSB
Bit 10; 0; spare
 
10 Bit 1-3; 101, spare Bits 4-10; Part of Binary msec of day
count; Bit 4=MSB
 
11 Bit 1-10; Part of Binary msec of day count;  
12 Bit 1-10; Remainder of Binary msec of day count; Bit 10=LSB  
Telemetry 10 13 Ramp Calibration AVHRR Channel #1  
14 Ramp Calibration AVHRR Channel #2  
15 Ramp Calibration AVHRR Channel #3  
16 Ramp Calibration AVHRR Channel #4  
17 Ramp Calibration AVHRR Channel #5  
18 AVHRR Channel #3 Target Temperature  
19 AVHRR Channel #4 Target Temperature  
20 AVHRR Channel #5 Target Temperature 2
21 Channel 3 patch Temp.  
22 Spare - Undefined  
Back Scan 30 23
thru
52
10 words of back scan data from each AVHRR channel 3, 4, and 5. These data are time multiplexed as chan 3 (word 1), chan 4 (word 1), chan 5 ( word 1), chan 3 (word 2), chan 4 (word 2), chan 5 (word 2), etc.  
Space D ata 50 53
thru
102
10 words of space scan data from each AVHRR channel 1, 2, 3, 4, and 5. These data are time multiplexed as chan 1 (word 1), chan 2 (word 1), chan 3 (word 1), chan 4 (word 1) chan 5 (word 1), chan 1 (word 2), chan 2 (word 2), chan 3 (word 2), chan 4 (word 2), chan 5 (word 2), etc.  
Sync Data 1 103 Bit 1; 0 = AVHRR sync early; 1 = AVHRR sync late,Bits 2-10; 9 bit binary count of 0.9984 MHz periods; Bit 2 = MSB, Bit 10=LSB  
Data Words 520 104
thru
623
3 sets of data corresponding to three HRPT minor frames per HRPT major frame.

First HRPT minor frame: The 520 words contain 5 TIP minor frames of TIP data (104 TIP data words per TIP minor frame) Bits 1-8: Exact format as generated by TIP. Bit 9: Even parity check over Bits 1-8. Bit 10: Inverted Bit 1.

Second HRPT minor frame: The 520 words shall consist of five frames (104 words per frame) of spare data in the same form as spare words 624-750.

Third HRPT minor frame: The 520 words shall consist of five frames (104 words per frame)of AMSU/MHS data from the AIP. Bits 1-8: Exact format as generated by AIP.

Bit 9: Even parity check over Bits 1-8.

Bit 10: Inverted Bit 1.

3
Spare Words 127 624 0 1 0 0 0 0 1 0 0 1  
625 0 1 1 1 1 0 1 1 1 0  
626 1 1 1 0 1 0 1 0 1 0  
627 0 0 1 1 1 0 1 1 1 0  
628 0 0 1 0 1 1 0 0 0 0  
... ... 4
748 1 0 1 1 0 1 1 1 0 1  
749 0 0 0 1 0 0 1 1 1 0  
750 1 1 1 1 0 0 1 0 0 1  
Earth Data
10,240
751 Chan 1 - Sample 1  
752 Chan 2 - Sample 1  
753 Chan 3 - Sample 1  
754 Chan 4 - Sample 1  
755 Chan 5 - Sample 1  
756 Chan 1 - Sample 2  
... ... 5
10,985 Chan 5 - Sample 2047  
10,986 Chan 1 - Sample 2048  
10,987 Chan 2 - Sample 2048  
10,988 Chan 3 - Sample 2048  
10,989 Chan 4 - Sample 2048  
10,990 Chan 5 - Sample 2048  
Auxiliary Sync
100
10,991 1 1 1 1 1 0 0 0 1 0  
10,992 1 1 1 1 1 1 0 0 1 1  
10,993 0 1 1 0 1 1 0 1 0 1  
10,994 1 0 1 0 1 1 1 1 0 1  
... ... 6
11,089 0 1 1 1 1 1 0 0 0 0  
11,090 1 1 1 1 0 0 1 1 0 0  
NOTES:
1. First 60 bits from 63 bit PN generator started in the all 1's state. The generator polynomial is X6+X5+X2+X+1
2. Each of these words is a 5 channel subcom; 4 words of IR data plus subcom sync (10 "0"s)
3. The 104th word of each AMSU/MHS data frame of the MIRP contains 1110110100.
4. Derived by inverting the output of a 1023 bit PN sequence provided by a feedback shift register generating the polynomial: X10+X5+X2+X+1. The generator is started in all 1's state at the beginning of word 7 of each minor frame.
5. Each minor frame contains the data obtained during one Earth scan of the AVHRR sensor. The data from the five sensor channels of the AVHRR are time multiplexed as indicated.
6. Derived from the non-inverted output of a 1023 bit PN sequence provided by a feedback shift register generating the polynomial: X10+X5+X2+X+1. The generator is started in the all 1's state at the beginning of word 10,991.

4.1.4 Digital "A" Telemetry

The output data signals supplied by the instrument to the spacecraft can be assigned to three categories: 1) instrument Digital "A" (scientific) data; 2) Digital "B" Telemetry; and 3) Analog Telemetry. For purposes of this document, Digital "A" data only are described in this section.

4.1.4.1 AMSU-A1 for NOAA KLM and NOAA-N,P

The AMSU-A1 Digital "A" telemetry incorporates all of the radiometric data taken during one scan. It also includes the data from the on-orbit calibrations. In the Full Scan Mode, the AMSU-A1 for NOAA KLM and NOAA-N,P has 1,244 Digital "A" telemetry points, as identified in Table 4.1.4.1-1.

Table 4.1.4.1-1. AMSU-A1 Digital "A" Data Format - Full Scan Mode for NOAA KLM and NOAA-N, P.
A1 Frame Byte
Number
Parameter Notes
1-3 Sync. Sequence (FF Hex) 3
4 Unit Identification and Serial Number 3
5 Digital Housekeeping Data 1 3
6 Digital Housekeeping Data 2 3
7 Digital Housekeeping Data 3 3
8 Digital Housekeeping Data 4 3
9 Reflector 1, Position 1, MSP, First reading 1,2,3,4
10 Reflector 1, Position 1, LSP, First reading 1,2,3,4
11 Reflector 2, Position 1, MSP, First reading 1,2,3,4
12 Reflector 2, Position 1, LSP, First reading 1,2,3,4
13 Reflector 1, Position 1, MSP, Second reading 1,2,3,4
14 Reflector 1, Position 1, LSP, Second reading 1,2,3,4
15 Reflector 2, Position 1, MSP, Second reading 1,2,3,4
16 Reflector 2, Position 1, LSP, Second reading 1,2,3,4
17 Scene Position 1, Channel 3, MSP 1,3,5
18 Scene Position 1, Channel 3, LSP 1,3,5
19 Scene Position 1, Channel 4, MSP 1,3,5
20 Scene Position 1, Channel 4, LSP 1,3,5
... ... 1,3,5
41 Scene Position 1, Channel 15, MSP 1,3,5
42 Scene Position 1, Channel 15, LSP 1,3,5
43 Reflector 1, Position 2, MSP, First reading 1,2,3,4
44 Reflector 1, Position 2, LSP, First reading 1,2,3,4
45 Reflector 2, Position 2, MSP, First reading 1,2,3,4
46 Reflector 2, Position 2, LSP, First reading 1,2,3,4
47 Reflector 1, Position 2, MSP, Second reading 1,2,3,4
48 Reflector 1, Position 2, LSP, Second reading 1,2,3,4
49 Reflector 2, Position 2, MSP, Second reading 1,2,3,4
50 Reflector 2, Position 2, LSP, Second reading 1,2,3,4
51 Scene Position 2, Channel 3, MSP 1,3,5
52 Scene Position 2, Channel 3, LSP 1,3,5
... ... 1,3,5
75 Scene Position 2, Channel 15, MSP 1,3,5
76 Scene Position 2, Channel 15, LSP 1,3,5
77 Reflector 1, Position 3, MSP, First reading 1,2,3,4
78 Reflector 1, Position 3, LSP, First reading 1,2,3,4
79 Reflector 2, Position 3, MSP, First reading 1,2,3,4
80 Reflector 2, Position 3, LSP, First reading 1,2,3,4
81 Reflector 1, Position 3, MSP, Second reading 1,2,3,4
82 Reflector 1, Position 3, LSP, Second reading 1,2,3,4
83 Reflector 2, Position 3, MSP, Second reading 1,2,3,4
84 Reflector 2, Position 3, LSP, Second reading 1,2,3,4
85 Scene Position 3, Channel 3, MSP 1,3,5
86 Scene Position 3, Channel 3, LSP 1,3,5
... ... 1,3,5
1027 Scene Position 30, Channel 15, MSP 1,3,5
1028 Scene Position 30, Channel 15, LSP 1,3,5
1029 Reflector 1, Cold Cal. Position, MSP, First reading 1,2,3,4
1030 Reflector 1, Cold Cal. Position, LSP, First reading 1,2,3,4
1031 Reflector 2, Cold Cal. Position, MSP, First reading 1,2,3,4
1032 Reflector 2, Cold Cal. Position, LSP, First reading 1,2,3,4
1033 Reflector 1, Cold Cal. Position, MSP, Second reading 1,2,3,4
1034 Reflector 1, Cold Cal. Position, LSP, Second reading 1,2,3,4
1035 Reflector 2, Cold Cal. Position, MSP, Second reading 1,2,3,4
1036 Reflector 2, Cold Cal. Position, LSP, Second reading 1,2,3,4
1037 Cold Calibration 1, Channel 3, MSP 1,3,5
1038 Cold Calibration 1, Channel 3, LSP 1,3,5
1039 Cold Calibration 1, Channel 4, MSP 1,3,5
1040 Cold Calibration 1, Channel 4, LSP 1,3,5
... ... 1,3,5
1061 Cold Calibration 1, Channel 15, MSP 1,3,5
1062 Cold Calibration 1, Channel 15, LSP 1,3,5
1063 Cold Calibration 2, Channel 3, MSP 1,3,5
1064 Cold Calibration 2, Channel 3, LSP 1,3,5
1065 Cold Calibration 2, Channel 4, MSP 1,3,5
1066 Cold Calibration 2, Channel 4, LSP 1,3,5
... ... 1,3,5
1087 Cold Calibration 2, Channel 15, MSP 1,3,5
1088 Cold Calibration 2, Channel 15, LSP 1,3,5
1089 Temp Sensor 1, MSP 1,3,5,6
1090 Temp Sensor 1, LSP 1,3,5,6
1091 Temp Sensor 2, MSP 1,3,5,6
1092 Temp Sensor 2, LSP 1,3,5,6
... ... 1,3,5,6
1177 Temp Sensor 45, MSP 1,3,5,6
1178 Temp Sensor 45, LSP 1,3,5,6
1179 Temp Sensor Reference Voltage, MSP 6
1180 Temp Sensor Reference Voltage, LSP 6
1181 Reflector 1 Warm Cal. Position, MSP, First reading 1,2,3,4
1182 Reflector 1 Warm Cal. Position, LSP, First reading 1,2,3,4
1183 Reflector 2 Warm Cal. Position, MSP, First reading 1,2,3,4
1184 Reflector 2 Warm Cal. Position, LSP, First reading 1,2,3,4
1185 Reflector 1 Warm Cal. Position, MSP, Second reading 1,2,3,4
1186 Reflector 1 Warm Cal. Position, LSP, Second reading 1,2,3,4
1187 Reflector 2 Warm Cal. Position, MSP, Second reading 1,2,3,4
1188 Reflector 2 Warm Cal. Position, LSP, Second reading 1,2,3,4
1189 Warm Calibration 1, Channel 3, MSP 1,3,5
1190 Warm Calibration 1, Channel 3, LSP 1,3,5
... ... 1,3,5
1213 Warm Calibration 1, Channel 15, MSP 1,3,5
1214 Warm Calibration 1, Channel 15, LSP 1,3,5
1215 Warm Calibration 2, Channel 3, MSP 1,3,5
1216 Warm Calibration 2, Channel 3, LSP 1,3,5
... ... 1,3,5
1239 Warm Calibration 2, Channel 15, MSP 1,3,5
1240 Warm Calibration 2, Channel 15, LSP 1,3,5
... ... 1,3,5
1241-1243 Sync. Sequence (FF Hex)  
1244 Unit Identification and Serial Number  
Notes:
1. The MSP is the most significant portion of a particular measurement; the LSP is the least significant portion of the particular measurement.
2. The first set of readings for a particular reflector position are made prior to the integration interval; the second set of readings are made approximately halfway through the integration period.
3. Digital "A" data as read by the spacecraft shall contain an undetermined number of "fill words". These fill words shall be 0001H and will be intermingled with valid data. The Digital "A" data as sent by the instrument shall be such that no valid data of 0001H shall be included.
4. Format of Position data is: DDDDDDDDDDDDDDE0, where:
D = Data
E = Error bit: 0=not in spec, 1=spec.
0 = Zero
5. Format of Radiometer data is: DDDDDDDDDDDDDDD0, where:
D = Data
0 = Zero
6. Temperature Sensor Reference Voltage utilized for temperature sensors 36-45 only. It is used for the initial instrument performance test at instrument contractor's facility.

Note: For S/N 103 (flown on NOAA-15) only, all scene positions, warm calibration and cold calibration, channel 7 and channel 15 radiometric data are interchanged; i.e., channel 7 radiometric output is actually channel 15, and channel 15 is actually channel 7.

Table 4.1.4.1-2 gives more details on the AMSU-A1 housekeeping data which are stored in Bytes 5-8 and also the temperature sensor data (bytes 1089-1178).

< /tr>
Table 4.1.4.1-2. AMSU-A1 Data Word Description.
Housekeeping Data, Byte Number 1
Bit # Description
0 0
1 Full Scan Mode:
0=Not Full Scan;
1=Full Scan.
2 Warm Cal Mode:
0=Not in Warm Cal;
1=Warm Cal.
3 Cold Cal Mode:
0=Not in Cold Cal;
1=Cold Cal.
4 Nadir Mode:
0=Not in Nadir;
1=Nadir.
5 Cold Cal Position, LSB
6 Cold Cal Position, MSB
7 0
Housekeeping Data, Byte Number 2
0 0
1 Scanner A1-1 Power:
0=Off;
1=On.
2 Scanner A1-2 Power:
0=Off;
1=On.
3 PLL Power:
0=Redundant (PLO#2);
1=Primary (PLO#1).
4 Survival Heater Power:
0=Off;
1=On.
5 0
6 0
7 0
Housekeeping Data, Byte Number 3
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
Housekeeping Data, Byte Number 4
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
Temperature Sensor Assignments
Number Location
1 Scan Motor A1-1
2 Scan Motor A1-2
3 Feedhorn A1-1
4 Feedhorn A1-2
5 RF Mux A1-1
6 RF Mux A1-2
7 Local Oscillator Channel 3
8 Local Oscillator Channel 4
9 Local Oscillator Channel 5
10 Local Oscillator Channel 6
11 Local Oscillator Channel 7
12 Local Oscillator Channel 8
13 Local Oscillator Channel 15
14 PLL LO #2 Channels 9 through 14 (See Note 1)
15 PLL LO #1 Channels 9 through 14
16 PLLO (Reference Oscillator) for S/N 101-104, Not used for S/N 105-109
17 Mixer/IF Amplifier Channel 3
18 Mixer/IF Amplifier Channel 4
19 Mixer/IF Amplifier Channel 5
20 Mixer/IF Amplifier Channel 6
21 Mixer/IF Amplifier Channel 7
22 Mixer/IF Amplifier Channel 8
23 Mixer/IF Amplifier Channel 9/14
24 Mixer/IF Amplifier Channel 15
25 IF Amplifier Channel 11/14
26 IF Amplifier Channel 9
27 IF Amplifier Channel 10
28 IF Amplifier Channel 11
29 DC/DC Converter
30 IF Amplifier Channel 13
31 IF Amplifier Channel 14
32 IF Amplifier Channel 15
33 RF Shelf A1-1
34 RF Shelf A1-2
35 Detector/Preamplifier Assembly
36 A1-1 Warm Load 1 - not valid for S/N 103
37 A1-1 Warm Load 2
38 A1-1 Warm Load 3
39 A1-1 Warm Load 4
40 A1-1 Warm Load center
41 A1-2 Warm Load 1
42 A1-2 Warm Load 2
43 A1-2 Warm Load 3
44 A1-2 Warm Load 4
45 A1-2 Warm Load Center
AMSU A-1 Identification Words
Unit Number Identification No. (Binary) S/N
Engineering Model Module A1 00000001 101
Proto Flight Model Module A1 00000101 102
Flight Model 1 Module A1 00001001 103
Flight Model 2 Module A1 00001101 104
Flight Model 3 Module A1 00010001 105
Flight Model 4 Module A1 00010101 106
Flight Model 5 Module A1 00011001 107
Flight Model 6 Module A1 00011101 108
Flight Model 7 Module A1 00100001 109
Note:
1) For S/N 102 only: Read PRT temperature. Read voltage of lock detect signal and convert to temperature using the following formula: t=(8.75 x V)-23.5 where t is the temperature (in C) and V is the measured lock detect voltage signal. If the temperature given by the PRT reading and the formula are in agreement within ±5 C, then use the PRT reading as it was intended. If the temperature difference is greater than ±5 C, then use temperature interpreted from lock detect signal. At initial power on of PLLO#2 before PLLO#2 is fully self heated and stabilized, use within ±5 C rule with reference to A1-1 (PRT #33) RF-shelf temperature. The within ±5 C rule does not apply right after PLLO was operational and was switched off and then back on. In this case, wait half an hour for PLLO#2 to cool down before temperature extraction method can be selected correctly. The formula t=(8.75 x V)-23.5 is useable only between 2.5V to +8.4V or -1.6 to 50 C.

4.1.4.2 AMSU-A2 for NOAA KLM and NOAA-N, P

The AMSU-A2 Digital "A" telemetry incorporates all of the radiometric data taken during one scan. It also includes the data from the on-orbit calibrations. The AMSU-A2 has 316 Digital "A" telemetry points, as described in Table 4.1.4.2-1, in the Full Scan Mode.

Table 4.1.4.2-1. AMSU-A2 Digital "A" Format - Full Scan Mode for NOAA KLM and NOAA-N, -P.
A2 Frame Byte Number Parameter Notes
1-3 Sync. Sequence (FF Hex) 3
4 Unit Identification and Serial Number 3
5 Digital Housekeeping Data 1 3
6 Digital Housekeeping Data 2 3
7 Digital Housekeeping Data 3 3
8 Digital Housekeeping Data 4 3
9 Reflector, Position 1, MSP, First reading 1,2,3,4
10 Reflector, Position 1, LSP, First reading 1,2,3,4
11 Reflector, Position 1, MSP, Second reading 1,2,3,4
12 Reflector, Position 1, LSP, Second reading 1,2,3,4
13 Scene Position 1, Channel 1, MSP 1,3,5
14 Scene Position 1, Channel 1, LSP 1,3,5
15 Scene Position 1, Channel 2, MSP 1,3,5
16 Scene Position 1, Channel 2, LSP 1,3,5
17 Reflector, Position 2, MSP, First reading 1,2,3,4
18 Reflector, Position 2, LSP, First reading 1,2,3,4
19 Reflector, Position 2, MSP, Second reading 1,2,3,4
20 Reflector, Position 2, LSP, Second reading 1,2,3,4
21 Scene Position 2, Channel 1, MSP 1,3,5
22 Scene Position 2, Channel 1, LSP 1,3,5
23 Scene Position 2, Channel 2, MSP 1,3,5
24 Scene Position 2, Channel 2, LSP 1,3,5
25 Reflector, Position 3, MSP, First reading 1,2,3,4
26 Reflector, Position 3, LSP, First reading 1,2,3,4
27 Reflector, Position 3, MSP, Second reading 1,2,3,4
28 Reflector, Position 3, LSP, Second reading 1,2,3,4
29 Scene Position 3, Channel 1, MSP 1,3,5
30 Scene Position 3, Channel 1, LSP 1,3,5
... ... 1,3,5
247 Scene Position 30, Channel 2, MSP 1,3,5
248 Scene Position 30, Channel 2, LSP 1,3,5
249 Reflector, Cold Calibration Position, MSP,First reading 1,2,3,4
250 Reflector, Cold Calibration Position, LSP,First reading 1,2,3,4
251 Reflector, Cold Calibration Position, MSP,Second reading 1,2,3,4
252 Reflector, Cold Calibration Position, LSP,Second reading 1,2,3,4
253 Cold Calibration 1, Channel 1, MSP 1,3,5
254 Cold Calibration 1, Channel 1, LSP 1,3,5
255 Cold Calibration 1, Channel 2, MSP 1,3,5
256 Cold Calibration 1, Channel 2, LSP 1,3,5
257 Cold Calibration 2, Channel 1, MSP 1,3,5
258 Cold Calibration 2, Channel 1, LSP 1,3,5
259 Cold Calibration 2, Channel 2, MSP 1,3,5
260 Cold Calibration 2, Channel 2, LSP 1,3,5
261 Temperature Sensor 1, MSP 1,3,5,6
262 Temperature Sensor 1, LSP 1,3,5,6
263 Temperature Sensor 2, MSP 1,3,5,6
264 Temperature Sensor 2, LSP 1,3,5,6
... ... 1,3,5,6
297 Temperature Sensor 19, MSP 1,3,5,6
298 Temperature Sensor 19, LSP 1,3,5,6
299 Temperature Sensor Reference Voltage, MSP 6
300 Temperature Sensor Reference Voltage, LSP 6
301 Reflector Warm Calibration Position, MSP,First reading 1,2,3,4
302 Reflector Warm Calibration Position, LSP,First reading 1,2,3,4
303 Reflector Warm Calibration Position, MSP,Second reading 1,2,3,4
304 Reflector Warm Calibration Position, LSP,Second reading 1,2,3,4
305 Warm Calibration 1, Channel 1, MSP 1,3,5
306 Warm Calibration 1, Channel 1, LSP 1,3,5
307 Warm Calibration 1, Channel 2, MSP 1,3,5
308 Warm Calibration 1, Channel 2, LSP 1,3,5
309 Warm Calibration 2, Channel 1, MSP 1,3,5
310 Warm Calibration 2, Channel 1, LSP 1,3,5
311 Warm Calibration 2, Channel 2, MSP 1,3,5
312 Warm Calibration 2, Channel 2, LSP 1,3,5
313-315 Synchronization Sequence (FF Hex)  
316 Unit Identification and Serial Number  
Notes:
1. MSP is the most significant portion of a particular measurement while the LSP is the least significant portion of the particular measurement.
2. The first set of readings for a particular reflector position are made prior to the integration interval; the second set of readings are made approximately half way through the integration period.
3. Digital "A" data as read by the spacecraft shall contain an undetermined number of "fill words". These fill words shall be 0001H and will be intermingled with valid data. The Digital "A" data as sent by the instrument shall be such that no valid data of 0001H shall be included.
4. Format of Position data is DDDDDDDDDDDDDDE0, where:
D=Data
E=Error bit: 0=not in spec, 1=spec.
0=Zero
5. Format of Radiometer data is DDDDDDDDDDDDDDD0, where:
D=Data
0=Zero
If A/D latch up flag, then format at the radiometer and Temp. Sensor Data is:
0000000000000000
6. Temperature sensor reference voltage is utilized for temperature sensors 13 through 19 only. It is used for the initial instrument performance test at instrument contractor's facility.

Table 4.1.4.2-2 gives more details on the AMSU-A2 housekeeping data which are stored in Bytes 5-8 and also the temperature sensor data (bytes 261-298).

Table 4.1.4.2-2. AMSU-A2 Data Word Description.
Housekeeping Data, Byte Number 1
Bit # Description
0 0
1 Full Scan Mode:
0=Not Full Scan;
1=Full Scan.
2 Warm Calibration Mode:
0=Not in Warm Cal;
1=Warm Cal.
3 Cold Cal Mode:
0=Not in Cold Cal;
1=Cold Cal.
4 Nadir Mode:
0=Not in Nadir;
1=Nadir.
5 Cold Cal Position, LSB
6 Cold Cal Position, MSB
7 0
Housekeeping Data, Byte Number 2
0 0
1 Scanner A2 Power:
0=Off;
1=On.
2 Scanner Compensator Power:
0=Off;
1=On.
3 0
4 Survival Heater Power:
0=Off;
1=On.
5 0
6 0
7 0
Housekeeping Data, Byte Number 3
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
Housekeeping Data, Byte Number 4
0 0
1 0
2 0
3 0
4 0
5 0
6 0
7 0
AMSU A2 Temperature Sensor Assignments
Number Location
1 Scan Motor
2 Feed Horn
3 RF Mux
4 Mixer IF Amplifier Channel 1
5 Mixer IF Amplifier Channel 2
6 Local Oscillator Channel 1
7 Local Oscillator Channel 2
8 Compensation Motor
9 Subreflector
10 DC/DC Converter
11 RF Shelf
12 Detector/Preamp Assembly
13 Warm Load Center
14 Warm Load 1
15 Warm Load 2
16 Warm Load 3
17 Warm Load 4
18 Warm Load 5
19 Warm Load 6
AMSU A2 Identification Words
Unit Number Identification No. (Binary) S/N
Engineering Model Module A2 00000010 101
Proto Flight Model Module A2 00000110 102
Flight Model 1 Module A2 00001010 103
Flight Model 2 Module A2 00001110 104
Flight Model 3 Module A2 00010010 105
Flight Model 4 Module A2 00010110 106
Flight Model 5 Module A2 00011010 107
Flight Model 6 Module A2 00011110 108
Flight Model 7 Module A2 00100010 109

4.1.4.3 AMSU-B Telemetry Data for NOAA KLM

Digital Data is clocked into the spacecraft AIP at a 16.64 kbps rate by the shift pulse whenever the Data Enable Pulse is presented to the instrument. The AMSU-B data is in the AIP minor frame words 48 through 97. The AIP reads the digital data output from the AMSU-B in 16 bit words.

The AMSU-B telemetry format consists of 78 minor frames of data. Minor frames 1 and 80 in each 8 second cycle are blank: i.e., no data is available in the PEU digital data FIFO during the first and last minor frames of each 8 second format. The 78 minor frames are organized as three blocks of 650 words as follows (representing one scan of the instrument):

36 spare words

540 words of Earth view pixel data

(90 x (5 channels + shaft position at mid-pixel))

26 words of housekeeping data

48 words of space view and target view data

(2 x 4 x (5 channels + shaft position))

This structure is maintained for all modes. In static modes, all pixel data locations contain the pixel data for the current antenna position.

The AMSU-B digital format is synchronized to the 8 second synchronization pulse. During each minor frame, 25 words of data are available in the PEU O/P FIFO within 16.7 milliseconds of the start of the minor frame (except in minor frames 1 and 80). Table 4.1.4.3-1 shows the AMSU-B digital data format.

Word Length: 16 bits

Serial Output: 25 - 16 bit words per 100 msec (MSB first)

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Table 4.1.4.3-1. AMSU-B Digital Data Format for NOAA KLM.
Word
Number
Minor Frame
1 2 3 4 5 6 7 8 9 10
01 Blank SP1 SP26 17/03 18/07 19/11 20/15 P/20 16/24 17/28
02 SP2 SP27 18/03 19/07 20/11 P/16 16/20 17/24 18/28
03 SP3 SP28 19/03 20/07 P/12 16/16 17/20 18/24 19/28
04 SP4 SP29 20/03 P/08 16/12 17/16 18/20 19/24 20/28
05 SP5 SP30 P/04 16/08 17/12 18/16 19/20 20/24 P/29
06 SP6 SP31 16/04 17/08 18/12 19/16 20/20 P/25 16/29
07 SP7 SP32 17/04 18/08 19/12 20/16 P/21 16/25 17/29
08 SP8 SP33 18/04 19/08 20/12 P/17 16/21 17/25 18/29
09 SP9 SP34 19/04 20/08 P/13 16/17 17/21 18/25 19/29
10 SP10 SP35 20/04 P/09 16/13 17/17 18/21 19/25 20/29
11 SP11 SP36 P/05 16/09 17/13 18/17 19/21 20/25 P/30
12 SP12 P/01 16/05 17/09 18/13 19/17 20/21 P/26 16/30
13 SP13 16/01 17/05 18/09 19/13 20/17 P/22 16/26 17/30
14 SP14 17/01 18/05 19/09 20/13 P/18 16/22 17/26 18/30
15 SP15 18/01 19/05 20/09 P/14 16/18 17/22 18/26 19/30
16 SP16 19/01 20/05 P/10 16/14 17/18 18/22 19/26 20/30
17 SP17 20/01 P/06 16/10 17/14 18/18 19/22 20/26 P/31
18 SP18 P/02 16/06 17/10 18/14 19/18 20/22 P/27 16/31
19 SP19 16/02 17/06 18/10 19/14 20/18 P/23 16/27 17/31
20 SP20 17/02 18/06 19/10 20/14 P/19 16/23 17/27 18/31
21 SP21 18/02 19/06 20/10 P/15 16/19 17/23 18/27 19/31
22 SP22 19/02 20/06 P/11 16/15 17/19 18/23 19/27 20/31
23 SP23 20/02 P/07 16/11 17/15 18/19 19/23 20/27 P/32
24 SP24 P/03 16/07 17/11 18/15 19/19 20/23 P/28 16/32
25 SP25 16/03 17/07 18/11 19/15 20/19 P/24 16/28 17/32
Word
Number
Minor Frame
11 12 13 14 15 16 17 18 19 20
01 18/32 19/36 20/40 P/45 16/49 17/53 18/57 19/61 20/65 P/70
02 19/32 20/36 P/41 16/45 17/49 18/53 19/57 20/61 P/66 16/70
03 20/32 P/37 16/41 17/45 18/49 19/53 20/57 P/62 16/66 17/70
04 P/33 16/37 17/41 18/45 19/49 20/53 P/58 16/62 17/66 18/70
05 16/33 17/37 18/41 19/45 20/49 P/54 16/58 17/62 18/66 19/70
06 17/33 18/37 19/41 20/45 P/50 16/54 17/58 18/62 19/66 20/70
07 18/33 19/37 20/41 P/46 16/50 17/54 18/58 19/62 20/66 P/71
08 19/33 20/37 P/42 16/46 17/50 18/54 19/58 20/62 P/67 16/71
09 20/33 P/38 16/42 17/46 18/50 19/54 20/58 P/63 16/67 17/71
10 P/34 16/38 17/42 18/46 19/50 20/54 P/59 16/63 17/67 18/71
11 16/34 17/38 18/42 19/46 20/50 P/55 16/59 17/63 18/67 19/71
12 17/34 18/38 19/42 20/46 P/51 16/55 17/59 18/63 19/67 20/71
13 18/34 19/38 20/42 P/47 16/51 17/55 18/59 19/63 20/67 P/72
14 19/34 20/38 P/43 16/47 17/51 18/55 19/59 20/63 P/68 16/72
15 20/34 P/39 16/43 17/47 18/51 19/55 20/59 P/64 16/68 17/72
16 P/35 16/39 17/43 18/47 19/51 20/55 P/60 16/64 17/68 18/72
17 16/35 17/39 18/43 19/47 20/51 P/56 16/60 17/64 18/68 19/72
18 17/35 18/39 19/43 20/47 P/52 16/56 17/60 18/64 19/68 20/72
19 18/35 19/39 20/43 P/48 16/52 17/56 18/60 19/64 20/68 P/73
20 19/35 20/39 P/44 16/48 17/52 18/56 19/60 20/64 P/69 16/73
21 20/35 P/40 16/44 17/48 18/52 19/56 20/60 P/65 16/69 17/73
22 P/36 16/40 17/44 18/48 19/52 20/56 P/61 16/65 17/69 18/73
23 16/36 17/40 18/44 19/48 20/52 P/57 16/61 17/65 18/69 19/73
24 17/36 18/40 19/44 20/48 P/53 16/57 17/61 18/65 19/69 20/73
25 18/36 19/40 20/44 P/49 16/53 17/57 18/61 19/65 20/69 P/74
Word
Number
Minor Frame
21 22 23 24 25 26 27 28 29 30
01 16/74 17/78 18/82 19/86 20/90 A25 20/S4 SP1 TST09 17/03
02 17/74 18/78 19/82 20/86 A01 A26 P/T1 SP2 TST10 18/03
03 18/74 19/78 20/82 P/87 A02 P/S1 16/T1 SP3 TST11 19/03
04 19/74 20/78 P/83 16/87 A03 16/S1 17/T1 SP4 TST12 20/03
05 20/74 P/79 16/83 17/87 A04 17/S1 18/T1 SP5 TST13 P/04
06 P/75 16/79 17/83 18/87 A05 18/S1 19/T1 SP6 TST14 16/04
07 16/75 17/79 18/83 19/87 A06 19/S1 20/T1 SP7 TST15 17/04
08 17/75 18/79 19/83 20/87 A07 20/S1 P/T2 SP8 TST16 18/04
09 18/75 19/79 20/83 P/88 A08 P/S2 16/T2 SP9 TST17 19/04
10 19/75 20/79 P/84 16/88 A09 16/S2 17/T2 SP10 TST18 20/04
11 20/75 P/80 16/84 17/88 A10 17/S2 18/T2 SP11 TST19 P/05
12 P/76 16/80 17/84 18/88 A11 18/S2 19/T2 SP12 P/01 16/05
13 16/76 17/80 18/84 19/88 A12 19/S2 20/T2 SP13 16/01 17/05
14 17/76 18/80 19/84 20/88 A13 20/S2 P/T3 SP14 17/01 18/05
15 18/76 19/80 20/84 P/89 A14 P/S3 16/T3 SP15 18/01 19/05
16 19/76 20/80 P/85 16/89 A15 16/S3 17/T3 SP16 19/01 20/05
17 20/76 P/81 16/85 17/89 A16 17/S3 18/T3 SP17 20/01 P/06
18 P/77 16/81 17/85 18/89 A17 18/S3 19/T3 TST01 P/02 16/06
19 16/77 17/81 18/85 19/89 A18 19/S3 20/T3 TST02 16/02 17/06
20 17/77 18/81 19/85 20/89 A19 20/S3 P/T4 TST03 17/02 18/06
21 18/77 19/81 20/85 P/90 A20 P/S4 16/T4 TST04 18/02 19/06
22 19/77 20/81 P/86 16/90 A21 16/S4 17/T4 TST05 19/02 20/06
23 20/77 P/82 16/86 17/90 A22 17/S4 18/T4 TST06 20/02 P/07
24 P/78 16/82 17/86 18/90 A23 18/S4 19/T4 TST07 P/03 16/07
25 16/78 17/82 18/86 19/90 A24 19/S4 20/T4 TST08 16/03 17/07
Word
Number
Minor Frame
31 32 33 34 35 36 37 38 39 40
01 18/07 19/11 20/15 P/20 16/24 17/28 18/32 19/36 20/40 P/45
02 19/07 20/11 P/16 16/20 17/24 18/28 19/32 20/36 P/41 16/45
03 20/07 P/12 16/16 17/20 18/24 19/28 20/32 P/37 16/41 17/45
04 P/08 16/12 17/16 18/20 19/24 20/28 P/33 16/37 17/41 18/45
05 16/08 17/12 18/16 19/20 20/24 P/29 16/33 17/37 18/41 19/45
06 17/08 18/12 19/16 20/20 P/25 16/29 17/33 18/37 19/41 20/45
07 18/08 19/12 20/16 P/21 16/25 17/29 18/33 19/37 20/41 P/46
08 19/08 20/12 P/17 16/21 17/25 18/29 19/33 20/37 P/42 16/46
09 20/08 P/13 16/17 17/21 18/25 19/29 20/33 P/38 16/42 17/46
10 P/09 16/13 17/17 18/21 19/25 20/29 P/34 16/38 17/42 18/46
11 16/09 17/13 18/17 19/21 20/25 P/30 16/34 17/38 18/42 19/46
12 17/09 18/13 19/17 20/21 P/26 16/30 17/34 18/38 19/42 20/46
13 18/09 19/13 20/17 P/22 16/26 17/30 18/34 19/38 20/42 P/47
14 19/09 20/13 P/18 16/22 17/26 18/30 19/34 20/38 P/43 16/47
15 20/09 P/14 16/18 17/22 18/26 19/30 20/34 P/39 16/43 17/47
16 P/10 16/14 17/18 18/22 19/26 20/30 P/35 16/39 17/43 18/47
17 16/10 17/14 18/18 19/22 20/26 P/31 16/35 17/39 18/43 19/47
18 17/10 18/14 19/18 20/22 P/27 16/31 17/35 18/39 19/43 20/47
19 18/10 19/14 20/18 P/23 16/27 17/31 18/35 19/39 20/43 P/48
20 19/10 20/14 P/19 16/23 17/27 18/31 19/35 20/39 P/44 16/48
21 20/10 P/15 16/19 17/23 18/27 19/31 20/35 P/40 16/44 17/48
22 P/11 16/15 17/19 18/23 19/27 20/31 P/36 16/40 17/44 18/48
23 16/11 17/15 18/19 19/23 20/27 P/32 16/36 17/40 18/44 19/48
24 17/11 18/15 19/19 20/23 P/28 16/32 17/36 18/40 19/44 20/48
25 18/11 19/15 20/19 P/24 16/28 17/32 18/36 19/40 20/44 P/49
Word
Number
Minor Frame
41 42 43 44 45 46 47 48 49 50
01 16/49 17/53 18/57 19/61 20/65 P/70 16/74 17/78 18/82 19/86
02 17/49 18/53 19/57 20/61 P/66 16/70 17/74 18/78 19/82 20/86
03 18/49 19/53 20/57 P/62 16/66 17/70 18/74 19/78 20/82 P/87
04 19/49 20/53 P/58 16/62 17/66 18/70 19/74 20/78 P/83 16/87
05 20/49 P/54 16/58 17/62 18/66 19/70 20/74 P/79 16/83 17/87
06 P/50 16/54 17/58 18/62 19/66 20/70 P/75 16/79 17/83 18/87
07 16/50 17/54 18/58 19/62 20/66 P/71 16/75 17/79 18/83 19/87
08 17/50 18/54 19/58 20/62 P/67 16/71 17/75 18/79 19/83 20/87
09 18/50 19/54 20/58 P/63 16/67 17/71 18/75 19/79 20/83 P/88
10 19/50 20/54 P/59 16/63 17/67 18/71 19/75 20/79 P/84 16/88
11 20/50 P/55 16/59 17/63 18/67 19/71 20/75 P/80 16/84 17/88
12 P/51 16/55 17/59 18/63 19/67 20/71 P/76 16/80 17/84 18/88
13 16/51 17/55 18/59 19/63 20/67 P/72 16/76 17/80 18/84 19/88
14 17/51 18/55 19/59 20/63 P/68 16/72 17/76 18/80 19/84 20/88
15 18/51 19/55 20/59 P/64 16/68 17/72 18/76 19/80 20/84 P/89
16 19/51 20/55 P/60 16/64 17/68 18/72 19/76 20/80 P/85 16/89
17 20/51 P/56 16/60 17/64 18/68 19/72 20/76 P/81 16/85 17/89
18 P/52 16/56 17/60 18/64 19/68 20/72 P/77 16/81 17/85 18/89
19 16/52 17/56 18/60 19/64 20/68 P/73 16/77 17/81 18/85 19/89
20 17/52 18/56 19/60 20/64 P/69 16/73 17/77 18/81 19/85 20/89
21 18/52 19/56 20/60 P/65 16/69 17/73 18/77 19/81 20/85 P/90
22 19/52 20/56 P/61 16/65 17/69 18/73 19/77 20/81 P/86 16/90
23 20/52 P/57 16/61 17/65 18/69 19/73 20/77 P/82 16/86 17/90
24 P/53 16/57 17/61 18/65 19/69 20/73 P/78 16/82 17/86 18/90
25 16/53 17/57 18/61 19/65 20/69 P/74 16/78 17/82 18/86 19/90
Word
Number
Minor Frame
51 52 53 54 55 56 57 58 59 60
01 20/90 A25 20/S4 SP1 TST09 17/03 18/07 19/11 20/15 P/20
02 A01 A26 P/T1 SP2 TST10 18/03 19/07 20/11 P/16 16/20
03 A02 P/S1 16/T1 SP3 TST11 19/03 20/07 P/12 16/16 17/20
04 A03 16/S1 17/T1 SP4 TST12 20/03 P/08 16/12 17/16 18/20
05 A04 17/S1 18/T1 SP5 TST13 P/04 16/08 17/12 18/16 19/20
06 A05 18/S1 19/T1 SP6 TST14 16/04 17/08 18/12 19/16 20/20
07 A06 19/S1 20/T1 SP7 TST15 17/04 18/08 19/12 20/16 P/21
08 A07 20/S1 P/T2 SP8 TST16 18/04 19/08 20/12 P/17 16/21
09 A08 P/S2 16/T2 SP9 TST17 19/04 20/08 P/13 16/17 17/21
10 A09 16/S2 17/T2 SP10 TST18 20/04 P/09 16/13 17/17 18/21
11 A10 17/S2 18/T2 SP11 TST19 P/05 16/09 17/13 18/17 19/21
12 A11 18/S2 19/T2 SP12 P/01 16/05 17/09 18/13 19/17 20/21
13 A12 19/S2 20/T2 SP13 16/01 17/05 18/09 19/13 20/17 P/22
14 A13 20/S2 P/T3 SP14 17/01 18/05 19/09 20/13 P/18 16/22
15 A14 P/S3 16/T3 SP15 18/01 19/05 20/09 P/14 16/18 17/22
16 A15 16/S3 17/T3 SP16 19/01 20/05 P/10 16/14 17/18 18/22
17 A16 17/S3 18/T3 SP17 20/01 P/06 16/10 17/14 18/18 19/22
18 A17 18/S3 19/T3 TST01 P/02 16/06 17/10 18/14 19/18 20/22
19 A18 19/S3 20/T3 TST02 16/02 17/06 18/10 19/14 20/18 P/23
20 A19 20/S3 P/T4 TST03 17/02 18/06 19/10 20/14 P/19 16/23
21 A20 P/S4 16/T4 TST04 18/02 19/06 20/10 P/15 16/19 17/23
22 A21 16/S4 17/T4 TST05 19/02 20/06 P/11 16/15 17/19 18/23
23 A22 17/S4 18/T4 TST06 20/02 P/07 16/11 17/15 18/19 19/23
24 A23 18/S4 19/T4 TST07 P/03 16/07 17/11 18/15 19/19 20/23
25 A24 19/S4 20/T4 TST08 16/03 17/07 18/11 19/15 20/19 P/24
Word
Number
Minor Frame
61 62 63 64 65 66 67 68 69 70
01 16/24 17/28 18/32 19/36 20/40 P/45 16/49 17/53 18/57 19/61
02 17/24 18/28 19/32 20/36 P/41 16/45 17/49 18/53 19/57 20/61
03 18/24 19/28 20/32 P/37 16/41 17/45 18/49 19/53 20/57 P/62
04 19/24 20/28 P/33 16/37 17/41 18/45 19/49 20/53 P/58 16/62
05 20/24 P/29 16/33 17/37 18/41 19/45 20/49 P/54 16/58 17/62
06 P/25 16/29 17/33 18/37 19/41 20/45 P/50 16/54 17/58 18/62
07 16/25 17/29 18/33 19/37 20/41 P/46 16/50 17/54 18/58 19/62
08 17/25 18/29 19/33 20/37 P/42 16/46 17/50 18/54 19/58 20/62
09 18/25 19/29 20/33 P/38 16/42 17/46 18/50 19/54 20/58 P/63
10 19/25 20/29 P/34 16/38 17/42 18/46 19/50 20/54 P/59 16/63
11 20/25 P/30 16/34 17/38 18/42 19/46 20/50 P/55 16/59 17/63
12 P/26 16/30 17/34 18/38 19/42 20/46 P/51 16/55 17/59 18/63
13 16/26 17/30 18/34 19/38 20/42 P/47 16/51 17/55 18/59 19/63
14 17/26 18/30 19/34 20/38 P/43 16/47 17/51 18/55 19/59 20/63
15 18/26 19/30 20/34 P/39 16/43 17/47 18/51 19/55 20/59 P/64
16 19/26 20/30 P/35 16/39 17/43 18/47 19/51 20/55 P/60 16/64
17 20/26 P/31 16/35 17/39 18/43 19/47 20/51 P/56 16/60 17/64
18 P/27 16/31 17/35 18/39 19/43 20/47 P/52 16/56 17/60 18/64
19 16/27 17/31 18/35 19/39 20/43 P/48 16/52 17/56 18/60 19/64
20 17/27 18/31 19/35 20/39 P/44 16/48 17/52 18/56 19/60 20/64
21 18/27 19/31 20/35 P/40 16/44 17/48 18/52 19/56 20/60 P/65
22 19/27 20/31 P/36 16/40 17/44 18/48 19/52 20/56 P/61 16/65
23 20/27 P/32 16/36 17/40 18/44 19/48 20/52 P/57 16/61 17/65
24 P/28 16/32 17/36 18/40 19/44 20/48 P/53 16/57 17/61 18/65
25 16/28 17/32 18/36 19/40 20/44 P/49 16/53 17/57 18/61 19/65
Word
Number
Minor Frame
71 72 73 74 75 76 77 78 79 80
01 20/65 P/70 16/74 17/78 18/82 19/86 20/90 A25 20/S4 Blank
02 P/66 16/70 17/74 18/78 19/82 20/86 A01 A26 P/T1
03 16/66 17/70 18/74 19/78 20/82 P/87 A02 P/S1 16/T1
04 17/66 18/70 19/74 20/78 P/83 16/87 A03 16/S1 17/T1
05 18/66 19/70 20/74 P/79 16/83 17/87 A04 17/S1 18/T1
06 19/66 20/70 P/75 16/79 17/83 18/87 A05 18/S1 19/T1
07 20/66 P/71 16/75 17/79 18/83 19/87 A06 19/S1 20/T1
08 P/67 16/71 17/75 18/79 19/83 20/87 A07 20/S1 P/T2
09 16/67 17/71 18/75 19/79 20/83 P/88 A08 P/S2 16/T2
10 17/67 18/71 19/75 20/79 P/84 16/88 A09 16/S2 17/T2
11 18/67 19/71 20/75 P/80 16/84 17/88 A10 17/S2 18/T2
12 19/67 20/71 P/76 16/80 17/84 18/88 A11 18/S2 19/T2
13 20/67 P/72 16/76 17/80 18/84 19/88 A12 19/S2 20/T2
14 P/68 16/72 17/76 18/80 19/84 20/88 A13 20/S2 P/T3
15 16/68 17/72 18/76 19/80 20/84 P/89 A14 P/S3 16/T3
16 17/68 18/72 19/76 20/80 P/85 16/89 A15 16/S3 17/T3
17 18/68 19/72 20/76 P/81 16/85 17/89 A16 17/S3 18/T3
18 19/68 20/72 P/77 16/81 17/85 18/89 A17 18/S3 19/T3
19 20/68 P/73 16/77 17/81 18/85 19/89 A18 19/S3 20/T3
20 P/69 16/73 17/77 18/81 19/85 20/89 A19 20/S3 P/T4
21 16/69 17/73 18/77 19/81 20/85 P/90 A20 P/S4 16/T4
22 17/69 18/73 19/77 20/81 P/86 16/90 A21 16/S4 17/T4
23 18/69 19/73 20/77 P/82 16/86 17/90 A22 17/S4 18/T4
24 19/69 20/73 P/78 16/82 17/86 18/90 A23 18/S4 19/T4
25 20/69 P/74 16/78 17/82 18/86 19/90 A24 19/S4 20/T4
Notes:
1. The format consists of minor frames (1 to 80). Minor frames 1 and 80 are blank. This means that no data is available in the PEU output FIFO for reading by the AIP and therefore the AIP should not send any sample pulses to AMSU-B during these minor frame periods.
2. Table 4.1.4.3-2 indicates the meanings for the variables used in Table 4.1.4.3-1.
3. The format structure and definition is identical for all modes. In scanning modes, n, Sn and Tn represent pixel identification. In static modes, n, Sn and Tn have no meaning; all data values relate to the IFOV.
Table 4.1.4.3-2. Meaning of Variables in Table 4.1.4.3-1.
Key Meaning
SP Spare word (Data is 5555H except for spare words 34 to 36)
TSTxx Test Data
P/n Shaft position at mid-integration time for FOV n.
16/n Integrated output for channel 16 for FOV n.
17/n Integrated output for channel 17 for FOV n.
18/n Integrated output for channel 18 for FOV n.
19/n Integrated output for channel 19 for FOV n.
20/n Integrated output for channel 20 for FOV n.
/Sn Space view FOV n.
/Tn Internal Target view FOV n.
AXX Multiplexed Housekeeping data (see Table 4.1.4.3-3).

Table 4.1.4.3-3 describes the AMSU-B digital sub-multiplexed channels.

Table 4.1.4.3-3. AMSU-B Data Word Description.
Digital Sub-multiplexed channels
A01 Unit ID + Flags
A02 Digital B Telemetry
A03 Mixer 16 temperature
A04 Mixer 17 temperature
A05 Mixer 18/19/20 temperature
A06 FET amplifier 16 temperature
A07 FET amplifier 17 temperature
A08 FET amplifier 18 temperature
A09 FET amplifier 19 temperature
A10 FET amplifier 20 temperature
A11 Calibration target temperature 1
A12 Calibration target temperature 2
A13 Calibration target temperature 3
A14 Calibration target temperature 4
A15 Calibration target temperature 5
A16 Calibration target temperature 6
A17 Calibration target temperature 7
A18 Sub-reflector temperature 1
A19 Local Oscillator Monitor Current 16
A20 Local Oscillator Monitor Current 17
A21 Local Oscillator Monitor Current 18/19/20
A22 Local Oscillator 16 temperature
A23 Local Oscillator 17 temperature
A24 Local Oscillator 18/19/20 temperature
A25 PRT Bridge Voltage
A26 PRT Board Temperature
Bit A01
00 Module ID (LSB)
01 Module ID
02 Module ID
03 Module ID
04 Module ID
05 Module ID
06 Module ID
07 Module ID (MSB)
08 Mode Transition Flag
09 Scan Synchronization
10 Pixel Data Invalid Flag
11 Scan Control Status
12 Processor Check Flag
13 Not Defined
14 Not Defined
15 (MSB) Not Defined
Module Identification (Bits 00 to 07)
Unit Number Identification Number
(MSB) (LSB)
EM 0000 0000
PFM 0000 0100
FM2 0000 1000
FM3 0000 1100
Mode Transition (Bit 08)
0 Transition Complete
1 Transition in progress
Scan Synchronization (Bit 09)
0 Error < 0.1 degrees at 8 second sync pulse
1 Error 0.1 degrees at 8 second sync pulse
Pixel Data Invalid (Bit 10)
0 Valid
1 Invalid
Scan Control Status (Bit 11)
0 Running
1 Aborted
Processor Check (Bit 12)
0 Built-In-Test passed
1 Built-In-Text failed
Bit A02 (See Note 1)
00 (LSB) Power On/Off (Relay 1 status)
01 Survival heater ON/OFF (Relay 2 status)
02 Scan normal mode
03 Parked in target view mode
04 Parked in nadir view mode
05 Parked in space view mode
06 Investigation mode
07 Stepped Mode
08 Channel 16 ON/OFF (Relay 3 status)
09 Channel 17 ON/OFF (Relay 4 status)s
10 Channel 18/19/20 ON/OFF (Relay 5 status)
11 Space view select (MSB)
12 Space view select (LSB)
13 Memory checks status
14 ROM check flag
15 (MSB) RAM check flag
Note:
1. A "1" status indicates "ON" and a "0" (zero) status indicates "OFF."

4.1.4.4 MHS for NOAA-N,-P

The Microwave Humidity Sounder (MHS) instrument replaced the AMSU-B instrument on NOAA-N and -P. Scientifically, the MHS is very similar to the AMSU-B instrument, but the manner in which the data are output is quite different. The equivalent of "Digital" data on AMSU-B is referred to as "science data telemetry", or just "science data", for the MHS instrument and comes packaged in a "science data telemetry packet" or "Science Packet" (SCI PKT) for short.

The NOAA-N,P MHS instrument science data will be delayed by two scan lines (or 5 2/3 seconds). The operational Level 1b data accounts for the delay and provides correct geo-location information. The delay, however, is not accounted for in the HRPT broadcast. The two scan line delay is caused by data buffering within the MHS instrument and the spacecraft data handling subsystem.

Consultative Committee for Space Data Systems (CCSDS) is composed of space agencies and industrial associates worldwide, working together to provide well-engineered, standardized solutions for common space data handling needs. The benefits of using CCSDS include: reduced cost, risk and development time, as well as enhanced interoperability and cross-support. For more information on CCSDS, refer to their website at: http://www.ccsds.org/. The data packets for MHS are in CCSDS format (i.e., a primary header, secondary header and checksum).

The MHS instrument, and its associated interface unit (the MIU) on the NOAA satellites, can operate in a variety of different modes and output several different packets, or formats, of data. There are nine different modes for the MHS (see Table 4.1.4.4-1 for details). In addition, all the MHS output must be funneled through a new processor, the MHS Interface Unit (MIU), which may ignore the MHS data completely and output its own telemetry instead. Depending on what mode the MIU is in, different information will be output. For purposes of this Users Guide, only the modes in which MHS data are output will be documented.

Table 4.1.4.4-1. MHS modes.
MHS Mode MHS Output
Power-on Empty Science Data Packet
Warm-up Empty Science Data Packet
Standby Empty Science Data Packet
Scan Science Data Packet
Fixed View Science Data Packet
Self-test Extended Test Data Packet
Safeing Empty Science Data Packet
Fault Empty Science Data Packet
Memory Dump Extended Memory Data Packet

To determine what mode the MIU is in, the user must look at word 6 and the first half of word 7 of the AIP minor frame (see Table 4.1.5.2-1). If the MHS instrument is in bootstrap mode, then word 6 and the first 4 bits of word 7 contain three constant bit patterns (2 sync codes and an ID). Otherwise, the mode is found in bits 2-4 of word 6 (see Table 4.1.4.4-2), with one caveat. If the "TIP engineering frame enabled" flag (bit 5 of word 6) is set (1), then ignore bits 2-4. The MIU is in TIP engineering mode and these bits have no meaning. If the MIU is not in TIP engineering mode, then bits 2-4 of word 6 should be used.

There are MIU/MHS data in bytes 6-7 of each minor frame as well as bytes 48-97 (the normal MHS data, when available), bytes 98-101 and byte 205. Sections 4.1.5.1 and 4.1.5.2 contain the formats of the AIP minor frame, while Sections 4.3.3.1 and 4.3.3.2 contain the formats of the minor frame for TIP.

The MHS instrument only interfaces to the MIU box. The MIU interfaces to the rest of the NOAA-N, P spacecraft through the TIROS Command and Control Subsystem (CCS), the TIROS Data Handling Subsystem (DHS) and the TIROS Electrical Power Subsystem (EPS).

The EPS portion interfacing to the MIU is the Power Subsystem Electronics (PSE) consisting of the 28 v Bus Main, Pulse Load, and Survival Buses. All power is distributed to the MHS through the MIU. The AMSU Information Processor (AIP), the Cross-Strapping Unit (XSU) and the TIROS Information Processor (TIP) boxes comprise the DHS part, while the Control Interface Unit (CIU) is the CCS interface portion of the MIU unit. All of these boxes utilize legacy bus architecture interfaces to the MIU while the MIU implements a MIL-STD-1553B redundant interface to the MHS instrument. A single 1553 bus is used for commanding (CMD), housekeeping (HK) telemetry and for science (SCI) data telemetry packets between the MHS and the MIU. However, the MIU, being the bus controller, determines whether the primary or redundant 1553 bus is utilized. Other than the 1553 bus, there is no redundancy in the MIU. The MHS is redundant internally, having both A and B sides to its electronics. The MIU supplies telemetry (MHS and MIU) to the ground during all operational modes. It also provides MHS survival temperature telemetry to the TIP even when the MHS and MIU are not powered.

The AIP provides a serial data stream from the spacecraft, which may be transmitted to the ground or embedded into other composite data streams. Within the AIP data, information is collected from the TIP, AMSU-A1, AMSU-A2, and the MIU. The TIP controls the basic data frame timing, generating a minor frame every tenth of a second (in Orbit Mode) and repeating the entire sequence every 32 seconds, called a major frame. The AIP is synchronized to the TIP timing using the 32-second major frame synch, and the harmonically related one-tenth second (10 Hz) pulse. The AIP itself has an 8-second major frame, which means it repeats its sequence four times during a TIP major frame.

Since the TIP and AIP minor frames are both 10 Hz, they are locked together, using the TIP synch timing. The TIP 32-second major frame pulse synchronizes the AIP. AIP generates its own 8-second timing, but since that period is harmonically related, it will not drift significantly from the 32-second pulse. AIP keeps the data from the AMSU's and MIU synchronized by passing on the timing pulses as appropriate.

The AIP stores the data from all four inputs in serial buffers during one minor frame, and sequences it into the data stream in the subsequent frame. This is mechanized using two sets of alternate buffers. AIP will initiate the data transfer with the 10 Hz synch, followed by the appropriate number of word strobes, 56 in the case of the MIU. The synch serves only to define the start of the transfer. The actual timing of the strobes will differ for each data source, and in the case of the MIU may not even be continuous, but it will always follow the synch.

The MIU provides a total of 80 sets of 56 8-bit words, called minor cycles, each of which will be inserted in an AIP minor frame. A minor cycle counter within the MIU keeps track of the frame sequence, and its content is included in the 56-word data sequence. Because of the double buffer arrangement, the MIU minor cycle count may not agree exactly with the AIP minor frame. However, the 8-second synch pulse will ensure that they are sequencing together uniformly, counting the same 80 frames.

The 56-word count is synchronized using the 10 Hz pulse, so that the first word will be transferred by the strobe following the synch. The data from the MHS is partially synchronized to the TIP timing, but the MS-1553 interface bus and MHS scanning mechanics prevent an exact match. Therefore, the MIU receives the MHS data packets, and packages them along with housekeeping telemetry, to produce the 56-word AIP data.

The 10 Hz and the 8-second synch pulses are received at the MIU and applied to the software using two discrete interrupts. Although both signals are intended to be continuous over long periods, a change in system clocking may result in a jump in either one, which causes it to be early or late with respect to previous pulse timing. The MIU is expected to resynchronize itself to the new sequence.

All AIP telemetry includes the Telemetry Frame Header data in words 6-7 of every minor frame. This is the same data and format as in the TIP Telemetry described in Table 4.1.4.4-5. Table 4.1.4.4-2 contains the format of the MIU AIP data for bytes 6-7.

Table 4.1.4.4-2. MIU AIP Bytes 6 and 7.
MIU Minor Cycle Bytes Bits Description/Definition State MIU Subsystem
All 6 0-1 RESERVED   TLM
2-4 Telemetry Mode: Normal (NORM)
Fast Dump (FADU)
Slow Dump (SLDU)
Very Slow Dump (VSDU)
Bus Eng Mode (BEM)
Undefined (UNDF)
Undefined
Undefined
000
001
010
011
100
101
110
111
5 TIP ENGR Frame Enabled; 1=ENAB, 0=DISABLE 0/1
6-7 MIU ID:
MIU1
MIU 2
Single MIU

00
01
11
MIU H/W
7 0-7 MIU Minor Cycle (Integer) Hex TIME

MIU Normal Mode (as well as slow dump, very slow dump and TIP engineering modes) telemetry is included in AIP bytes 48-97. Science Data is organized by minor frame as depicted in Table 4.1.4.4-3. Table 4.1.4.4-4 provides more details of the information in Table 4.1.4.4-3.

Table 4.1.4.4-3 contains the MIU AIP data for bytes 48-97 (the normal, slow dump, very slow dump, and TIP engineering telemetry modes).

Table 4.1.4.4-3. AIP Normal Mode Telemetry Data.
MIU Minor Cycle Data Description Notes
0 MHS OBT and first word of MHS CCSDS data (SCI PKT 2) 1, 3
1-25 Next 25 words of MHS CCSDS Data (SCI PKT 2) 1
26 Last 17 words of MHS CCSDS Data (SCI PKT 2) 1, 2
27 MHS OBT and first 9 words of MHS CCSDS Data (SCI PKT 0) 1, 2, 3
28-52 Next 25 words of MHS CCSDS Data (SCI PKT 0) 1
53 Last 9 words of MHS CCSDS Data (SCI PKT 0) 1, 2
54 MHS OBT and first 18 words of MHS CCSDS Data (SCI PKT 1) 1, 3
55-79 Last 25 words of MHS CCSDS Data (SCI PKT 1) 1
Notes:
1. CCSDS is the Consultative Committee for Space Data Systems
2. 1553B is the military standard for a multiplexed data bus.
3. OBT is On-Board Time, a 6-byte time tag associated with each MHS SCI PKT and composed of a 4-byte coarse time (resolution: seconds) and a 2-byte fine time (resolution: 2-16 seconds).
0/1 < /tr> /tr>
Table 4.1.4.4-4. MIU AIP Bytes 48-97 (Normal Telemetry Mode).
MIU Minor Cycle Bytes Bits Description State MIU Sub-system Note
0 48-49 0 NIL BUS Trans Enable, 0=Disable 0/1 1553 Bus BCRT  
1 MISC BUS Trans Enable, 0=Disable 0/1  
2 HK BUS Trans Enable, 0=Disable 0/1  
3 SCI BUS Trans Enable, 0=Disable 0/1  
4 CMD BUS Trans Enable, 0=Disable 0/1  
5-15 RESERVED    
50-51 0-15 HK BUS Fail Periods Count Hex  
52-53 0-15 HK BUS Error Table Index Hex  
54-55 0-15 SCI BUS Fail Periods Count Hex  
56-57 0-15 SCI BUS Error Table Index Hex  
58-59 0-15 BUS SKIPPED CMD Count Hex  
60-61 0-15 BUS CMD Error Table Index Hex  
62-63 0-15 MISC BUS Fail Periods Count Hex  
64-65 0-15 MISC BUS Error Table Index Hex  
66 0-7 WRAP TEST Failure Count Hex  
67 0-7 BIT TEST Failure Count Hex  
68-69 0-14 RESERVED    
15 WRAP TEST Pattern Mod Enable,0=Disable 0/1  
70-71 0-15 BIT Timeouts Count Hex  
72-73 0-15 BIT Timeouts Count Hex  
74-75 0-15 BUS RESET Timeouts Count Hex  
76-77 0-14 RESERVED    
15 BUS Overrun Occurred, 0=no; 1=yes 0/1  
78-79 0-15 Last Cmd During Bus Overrun Hex  
80-81 0-12 RESERVED    
13 LAST BUS USED, Bus A=1; B=0  
14 GROUND PREFERRED BUS, Bus A=1; B=0 0/1  
15 MIU PREFERRED BUS, Bus A=1; B=0 0/1  
82-83 0-15 BIT ITERATIONS Hex  
84-85 0-15 HK BUS REQUEST RETRY LIMIT Hex  
86-87 0-15 HK TVW RETRY LIMIT Hex  
88-89 0-15 HK RES RETRY LIMIT Hex  
90-95 0-47 CCSDS TIME TAG SCI PKT 2, LSB=2-16 Hex MHS 1
96-97 0-15 FIRST WORD OF SCI PKT 2   1
1-25 48-97   NEXT 25 WORDS OF SCI PKT 2   1
26 48-81   LAST 17 WORDS of SCI PKT 2     1
82-83 0 NIL BUS TRNS ENABLED, 0=Disable 0/1 Second iteration 1553 Bus BCRT  
1 MISC BUS TRNS ENABLED, 0=Disable 0/1  
2 HK BUS TRNS ENABLED, 0=Disable 0/1  
3 SCI BUS TRNS ENABLED, 0=Disable 0/1  
4 CMD BUS TRNS ENABLED, 0=Disable 0/1  
5-15 RESERVED    
84-85 0-15 HK BUS FAILED PERIODS COUNT Hex  
86-87 0-15 HK BUS ERROR TABLE INDEX Hex  
88-89 0-15 SCI BUS FAILED PERIODS COUNT Hex  
90-91 0-15 SCI BUS ERROR TABLE INDEX Hex  
92-93 0-15 BUS SKIPPED COMMAND COUNT Hex  
94-95 0-15 BUS CMND ERROR TABLE INDEX Hex  
96-97 0-15 MISC BUS FAIL PERIODS COUNT Hex  
27 48-49 0-15 MISC BUS ERROR TABLE INDEX Hex  
50 0-7 WRAP TEST FAILURE COUNT Hex  
51 0-7 BIT TEST FAILURE COUNT Hex  
52-53 0-14 RESERVED    
15 WRAP TEST PATTERN MOD ENABLED, 0=Disable 0/1  
54-55 0-15 BIT TIMEOUTS CONT Hex  
56-57 0-15 BIT RESULTS Hex  
58-59 0-15 BUS RESET TIMEOUTS CONT Hex  
60-61 0-14 RESERVED    
15 BUS OVERRUN OCCURRED, 0=no; 1=yes 0/1  
62-63 0-15 LAST COMMAND During BUS Overrun Hex  
64-65 0-12 RESERVED    
13 LAST BUS USED, BUS A=1; B=0 0/1  
14 GROUND PREFERRED BUS, Bus A=1; B=0 0/1  
15 MIU PREFERRED BUS, Bus A=1;B=0 0/1  
66-67 0-15 RESET ITERATIONS Hex  
68-69 0-15 SCI BUS REQUEST RETRY LIMIT Hex  
70-71 0-15 SCI TVW RETRY LIMIT Hex  
72-73 0-15 SCI RES RETRY LIMIT Hex  
74-79 0-47 CCSDS TIMETAG SCI PKT 0, LSB=2-16 Hex MHS  
80-97   FIRST 9 WORDS OF SCI PKT 0    
28-52 48-97   NEXT 25 WORDS OF SCI PKT 0    
53 48-65   LAST 9 WORDS OF SCI PKT 0    
66-67 0 NIL BUS TRNS ENABLED, 0=Disable 0/1 Third iteration 1553 Bus BCRT  
1 MISC BUS TRNS ENABLED, 0=Disable 0/1  
2 HK BUS TRNS ENABLED, 0=Disable 0/1  
3 SCI BUS TRNS ENABLED, 0=Disable 0/1  
4 CMD BUS TRNS ENABLED, 0=Disable 0/1  
5-15 RESERVED    
68-69 0-15 HK BUS Failed Periods Count Hex  
70-71 0-15 HK BUS Error Table Index Hex  
72-73 0-15 SCI BUS Failed Periods Count Hex  
74-75 0-15 SCI BUS Error Table Index Hex  
76-77 0-15 BUS Skipped Command Count Hex  
78-79 0-15 BUS CMD Error Table Index Hex  
80-81 0-15 MISC BUS Failed Periods Count Hex  
82-83 0-15 MISC BUS Error Table Index Hex  
84 0-7 WRAP TEST Failure Count Hex  
85 0-7 BIT TEST FAILURE COUNT Hex  
86-87 0-14 RESERVED    
15 WRAP TEST Pattern Mod Enabled, 0=Disable 0/1  
88-89 0-15 BIT TIMEOUTS COUNT Hex  
90-91 0-15 BIT RESULTS Hex  
92-93 0-15 BUS RESET Timeouts Count Hex  
94-95 0-14 RESERVED    
15 BUS OVERRUN OCCURRED, 0=no; 1=yes 0/1  
96-97 0-15 LAST CMD During BUS Overrun Hex  
54
48-49
0-12 RESERVED    
13 LAST BUS USED, Bus A=1; B=0 0/1  
14 GROUND PREFERRED BUS, Bus A=1; B=0 0/1  
15 MIU PREFERRED BUS, Bus A=1; B=0 0/1  
50-51 0-15 BCRTM Last INTR LOG List PNTR Hex  
52-53 0-15 CMD RETRY LIMIT Hex  
54-55 0-15 MISC RETRY LIMIT Hex  
56-61 0-47 CCSDS TIMETAG SCI PKT 1, LSB=2-16 Hex MHS  
62-97   FIRST 18 WORDS OF SCI PKT 1    
55-79 48-97   NEXT 25 WORDS OF SCI PKT 1    
Note:
1. Packet 2 (PKT 2) reports the prior 8-second period (n-1).

Table 4.1.4.4-5 depicts the data sent in bytes 98-101 during MIU Normal, Fast Dump, Very Slow Dump, and TIP Engineering Telemetry modes. This data repeats four times per major frame beginning with major and minor cycle counts in minor frames 0, 20, 40 and 60. Telemetry data I/O Reads are sent in bytes 98-99 during minor frames 2, 22, 42 and 62. Some of the key telemetry data from these AIP bytes 98-101 include TIP and AIP First In First Out (FIFO) status, Bus Controller state, CIU State, Uplink queue, CMD VERIF word, Error counts, Memory dump stats, Time and Error Log Indices.

Hex
Table 4.1.4.4-5. MIU AIP Telemetry Bytes 98-101 - Normal Telemetry Mode.
MIU Minor Cycle Byte Bits Description State
0 20 40 60 98-101 0-31 Major Cycle Count:
MSW
LSW

Hex
Hex
1
>21 41 61 98-99 0-15 Minor Cycle Error Count Hex
100-101 0-14 RESERVED  S
15 MIU in Sync with Major Cycle: 1=yes,0=no 0/1
2 22 42 62 98-99 0-15 Results of I/O Read  
100 0 TIP FIFO was reset; 1=yes, 0=no 0/1
1 TIP FIFO was full; 1=yes, 0=no 0/1
2 TIP FIFO was empty; 1=yes, 0=no 0/1
3 AIP FIFO was reset; 1=yes, 0=no 0/1
4 AIP FIFO was full; 1=yes, 0=no 0/1
5 AIP FIFO was empty; 1=yes, 0=no 0/1
6 Minor Cycle Sync Received; 1=yes,0=no 0/1
7 Major Cycle Sync Received; 1=yes, 0=no 0/1
101 0 FIFO Reset Under S/W Control; 1=yes, 0=no 0/1
1 RESET AIP FIFO Commanded; 1=yes,0=no 0/1
2 RESET TIP FIFO Commanded; 1=yes, 0=no 0/1
3 TIP FIFO Data inverted; 1=yes, 0=no 0/1
4 AIP FIFO Data inverted; 1=yes, 0=no 0/1
5 TIP FIFO Enabled; 1=yes, 0=no 0/1
6 AIP FIFO Enabled; 1=yes, 0=no 0/1
7 INT Reset Under S/W Control; 1=yes, 0=no 0/1
3 23 43 63 98-99 0-13 RESERVED  
14- BUS CONTROLLER STATE:
OFF
ENABLING
ON
DISABLING

00
01
10
11
100-101 0-13 RESERVED  
14- BUS CONTROLLER MODE:
TLM
HK DUMP
SCI DUMP
UNDEFINED

00
01
10
11
>4 24 44 64> 98-99 0-14 RESERVED  
15 Housekeeping Bus Process:
0=TLM; 1=DUMP
0/1
100-101 0-14 RESERVED  
15 Science Bus Processing Mode: 0=TLM; 1=DUMP 0/1
5 25 45 65 98-99 0-15 BC Unexplained Exceptions CNT Hex
100-101 0-15 MHS CMD Queue Count Hex
6 26 46 66 98 0-1 CIU ISR STATE:
Waiting for next CMD
Collecting CMD hdr
Collecting CMD hdr
Collecting datawords

00
01
10
11
2 Uplink Queue is full; 0=no, 1=yes 0/1
3 Uplink Queue was reset; 0=no, 1=yes 0/1
4-7 RESERVED  
99 0-7 Number of data words transferred (8 bits) Hex
100-101 0-15 CMD Verification Word Hex
7 27 47 67 98-99 0-15 Exception Occurred Count Hex
100-101 0-15 Unhandled Interrupt Count Hex
8 28 48 68 98-99 0-14 RESERVED  
15 Memory Scrub Enabled; 0=no, 1=yes 0/1
100-101 0-15 Single Bit Error Count Hex
9 29 49 69 98-101 0-31 Last Ram Address Scrubbed:
MSW
LSW

Hex
Hex
10 30 50 70 98-99 0-15 Machine Error Count Hex
100-101 0-14 RESERVED  
15 Stuck Bit Detected; 0=yes, 1=no 0/1
11 31 51 71   0-31 Address of Stuck Bit:
MSW
LSW

Hex
Hex
12
32
52
72
98-99
0-14 RESERVED  
15 Memory Checksum Enabled; 0=yes, 1=no 0/1
100-101 0-15 Memory Checksum Error Count Hex
13 33 53 73 98-101 0-31 Ram Dump Start Address:
MSW
LSW

Hex
Hex
14 34 54 74 98-101 0-31 HK Bus Memory Dump Start Address:
MSW
LSW

Hex
Hex
15 35 55 75 98-101 0-31 SCI Bus Memory Dump Start Address:
MSW
LSW

Hex
Hex
16 36 56 76 98-101 0-31 Ram Dump Requested Word Count:
MSW
LSW

Hex
Hex
17 37 57 77 98-99 0-15 HK Dump Requested Word Count Hex
100-101 0-15 SCI Dump Requested Word Count Hex
18 38 58 78 98-99 0-15 Main Cycle Count
100-101 0-15 Minor Frame Reception Tolerance Hex
19 39 59 79 98-99 0-15 Exception Log Save Index Hex
100-101 0-15 Interrupt Log Save Index Hex

TIROS Information Processor (TIP) telemetry from the MIU is supplied as 8-bits in Byte 102 of each TIP minor frame (this corresponds to AIP minor frame byte 205). Byte 102 (TIP) or byte 205 (AIP) contains the commutated MHS housekeeping telemetry packet. The content of an MHS telemetry packet is essentially a subset of the science data packet. It contains telemetry data, except not as much as is found in a science data packet, but no science data (i.e., no views of earth and the warm and cold targets). The format of the MIU TIP Telemetry Frame (normal, fast dump, slow dump, and bus engineering modes) is given in Table 4.1.4.4-6.

Table 4.1.4.4-6. MIU TIP Telemetry Frame - Normal.
TIP Minor Frame Count Bits Description/Definition State MIU Subsystem Notes
1 0-1 RESERVED      
  2-4 TELMETRY MODE:
Normal
Fast Dump
Slow Dump
Very Slow Dump
Bus Engr Mode
Undefined
Undefined
Undefined

000
001
010
011
100
101
110
111
TLM  
  5 TIP ENGINEERING FRAME ENABLED; 0=DISABLED 0/1   2
  6-7 MIU ID:
MIU 1
MIU 2
SINGLE MIU

00
01
11
MIU H/W  
2 0-7 MIU MINOR CYCLE NUMBER (Integer) HEX TIME  
3-4 0-15 COMMAND VERIFICATION WORD (Refer to CV Word Definition) HEX CMD  
5-6 0-13 RESERVED      
14-15 BUS CONTROLLER MODE:
TLM
HK DUMP
SCI DUMP
UNDEFINED

00
01
10
11
BUS CONTROL  
7-10 0-31 SCAN PERIOD 2 COARSE TIME; LSB=1 second SEC MHS HK 1
11-12 0-15 SCAN PERIOD 2 FINE TIME; LSB-216 seconds SEC 1
13-28 0-127 SCAN PERIOD 2 HOUSEKEEPING PACKET, 16 bytes HK/packet   1
29-30 0-15 COMMAND VERIFICATION WORD HEX CMD  
31-32 0-15 HK FAILED COLLECTION COUNT (Integer) HEX BUS  
33-36 0-31 SCAN PERIOD 0 WHOLE TIME,LSB=1 sec SEC MHS HK  
37-38 0-15 SCAN PERIOD 0 FRACTIONALTIME; LSB-216 seconds SEC  
39-54 0-127 SCAN PERIOD 0 HOUSEKEEPINGPACKET; 16 bytes HK/packet    
55-56 0-15 COMMAND VERIFICATION WORD HEX CMD  
57-58 0-15 HK VALID PACKETS CONT HEX BUS  
59-62 0-31 SCAN PERIOD 2 WHOLE TIME; LSB=1 second SEC MHS HK  
63-64 0-15 SCAN PERIOD 1 FRACTIONAL TIME; LSB-216 seconds SEC  
65-79, 0 0-128 SCAN PERIOD 1 HOUSEKEEPING PACKET; 16 bytes HK/packet    
Notes:
1. Scan Period 2 is reporting prior 8-second frame (n-1).
2. When TIP ENGR Frame is enabled, disregard MIU 1 indications of "Normal" in this mode.

Table 4.1.4.4-7 lists the telemetry packet types that are generated on the Science Data Bus. The lengths listed are as the data comes from the MHS instrument, and include a 12-byte packet header and 2-byte packet trailer. The MIU strips off these 14 bytes of packet header and trailer, sending the remaining bytes to the AIP to be placed into the minor frames.

Table 4.1.4.4-7. Science Data Bus telemetry packet types.
Packet Type Total Packet Length (octets)
Science Data Packet 1300
Extended Memory Data Packet (EMDP) 1042
Extended Test Data Packet (ETDP) 1300

The detailed structure of the Source Data field is given in the following sections.

Table 4.1.4.4-8 shows the fields that the Science Data Packets contain.

Table 4.1.4.4-8. Science Data Packet Fields.
Field Name Size (Octets)
Full Housekeeping Data 39
Status Word 1
Signal Processing Status 9
Pixel Data 1176
OBCT Temperature Data 16
Spares 45

The format of the "Full Housekeeping Data" field is described in Table 4.1.4.4-16.

In modes which do not generate Science Data (ie. all modes except Scan Mode and Fixed View Mode), an "Empty Science Data Packet" is generated, in which the remaining fields of the Science Data Packet (i.e., "Status Word" through "Spares") are undefined.

The format of the spares field is unallocated at present. All octets will be set to "00".

Table 4.1.4.4-9 shows the format of the Status Word.

Table 4.1.4.4-9. Format of the Status Word Field.
MSB             LSB
DC Offset Valid Scan Control Valid Profile Unused

The "DC Offset Valid" bit is set to a "1" when all channels calibration targets readings lie within acceptable limits, as determined by the DC Offset Algorithm. This bit will be set only in Scan Mode when the calibration targets are sampled.

The "Scan Control Valid" bit is set to a "1" if all mid-pixel positions of the reflector during Earth, Space and On-Board Calibration Target (OBCT) views are within the limits for the Scan Mode profile, or within the limits of the requested position in Fixed View Mode. This bit will be set only in Scan Mode or Fixed View Mode.

The "Profile" code is set to:

00 : Profile 0

01 : Profile 1

10 : Profile 2

11 : No Profile calculated (profile will be manually loaded/modified)

It is intended that Profile 0 will define the Nominal Scan Mode Profile with nominal Space View position. Profiles 1 and 2 will nominally be used for the alternate Space view positions. However, any profile can be reprogrammed to another position versus time profile by reloading the Scan Control Table profile parameters.

The format of the Signal Processing Status field is shown in Table 4.1.4.4-10.

Table 4.1.4.4-10. Format of Signal Processing Status Field.
MSB             LSB
Channel H1 DC Offset Word
Channel H2 DC Offset Word
Channel H3 DC Offset Word
Channel H4 DC Offset Word
Channel H5 DC Offset Word
H1 VALID H2 VALID H3 VALID H4 VALID H5 VALID SPE MUX CODE
H1 GAIN H2 GAIN UNUSED
H3 GAIN H4 GAIN UNUSED
H5 GAIN UNUSED UNUSED

The "Valid" bit is set to a "1" when all samples of this channel for this scan revolution lie within the ADC dynamic range.

H1..H5 are the five input channels from the Receiver. The Electronics Equipment (EE) has six signal processing channels, SPE1..SPE6. In the nominal configuration, the Receiver channel is connected to the corresponding EE channel, e.g., H1 to SPE1, and SPE6 is unused.

The SPE Mux Code is used to identify which Receiver channel, if any, is connected to the EE redundant channel, as shown in Table 4.1.4.4-11.

Table 4.1.4.4-11. SPE MUX Code Subfield format.
SPE MUX Code Configuration
000 H1 to SPE 6
001 H2 to SPE 6
010 H3 to SPE 6
011 SPE 6 not used
100 H4 to SPE 6
101 H5 to SPE6
110 SPE6 not used
111 SPE6 not used

The H1...H5 Gain Fields identify the gain settings of the Receiver video output channels as in Table 4.1.4.4-12.

Table 4.1.4.4-12. Receiver Gains Sub Field.
Gain Code Gain
000 0 dB
001 1 dB
010 2 dB
011 3 dB
1xx not used

The Science Data field can be separated into Earth, Space and OBCT View Data fields, which all follow a common format. They are differentiated only by the source of the data that is written to them. The fields are arranged as shown in Table 4.1.4.4-13.

Table 4.1.4.4-13. Science Data Field Format.
Field name Number of Pixel subfields
Earth 90
Space 4
OBCT 4

In Fixed View Mode, the Science Data Packet is the same format as Scan Mode, but the concept of Earth, Space and OBCT pixels does not apply. All 98 pixels are for the fixed view position. The (90 + 4 + 4) pixels are however collected with the same timing as though Scan Mode were performed.

Each of the Pixel sub-fields contain a position and five pixel values. The format of a Pixel Subfield is shown in Table 4.1.4.4-14.

Table 4.1.4.4-14. Pixel Subfield Format.
MSB             LSB
Mid-pixel Position MS Byte
Mid-pixel Position LS Byte
Channel H1 Data MS Byte
Channel H1 Data LS Byte
Channel H2 Data MS Byte
Channel H2 Data LS Byte
Channel H3 Data MS Byte
Channel H3 Data LS Byte
Channel H4 Data MS Byte
Channel H4 Data LS Byte
Channel H5 Data MS Byte
Channel H5 Data LS Byte

The "Mid-pixel position" data is the angular position of the Reflector at the mid-point of the pixel integration period defined by:

1 LSB = 7.2/1024 = 7.03125 x 10-3 degrees

The OBCT Temperature Data field contains the On-Board Calibration Target high precision temperature parameters. The format of this block is given in Table 4.1.4.4-15.

Table 4.1.4.4-15. OBCT Subfield Format.
MSB             LSB
Unused   On-Board Target Temperature 1
On-Board Target Temperature 1 (PRT1)
Unused   On-Board Target Temperature 2
On-Board Target Temperature 2 (PRT 2)
Unused   On-Board Target Temperature 3
On-Board Target Temperature 3 (PRT 3)
Unused   On-Board Target Temperature 4
On-Board Target Temperature 4 (PRT 4)
Unused   On-Board Target Temperature 5
On-Board Target Temperature 5 (PRT 5)
Unused   Calibration Channel 1
Calibration Channel 1 (PRT CAL 1: 118 Ω)
Unused   Calibration Channel 2
Calibration Channel 2 (PRT CAL 2: 95.3 Ω)
Unused   Calibration Channel 3
Calibration Channel 3 (PRT CAL 3: 80.6 Ω)

The full Housekeeping Telemetry Data blocks contain the following fields as shown in Table 4.1.4.4-16.

Table 4.1.4.4-16. Full Housekeeping Telemetry Data Block.
Field Name Size (Octets)
Mode and Subcommutation Code 1
Telecommand Acknowledgment and Fault Code 5
Switch Status 3
Temperature Data 24
Raw Current Consumption Data 6

The Sub-Commutation code is not significant for the Science Data packet as all telemetry is returned.

As with other packets, the Mode Code identifies the packet as either a Science Data Packet (Scan and Fixed View Modes), an Extended Test Packet (self-test mode), an Extended Memory Data Packet (Mode Code = "1111") or an Empty Science Data Packet (all other Modes).

Note that the Telecommand Acknowledgement field of Science Data packets provides acknowledgement of commands received on the Science Data Bus. (Commands on the Command/telemetry Bus are acknowledged in HK Telemetry Packets.)

The Temperature Data Field of each packet will contain all twenty-four thermistor telemetry channel parameters, instead of the multiplexed four of the Housekeeping telemetry packet. The OBCT temperatures are not contained here, as all such values are allocated a separate field in the Science Data Bus.

The Raw Current Consumption Data Field is the internal PSU Current analog telemetry as defined in Table 4.1.4.4-17.

Table 4.1.4.4-17. Raw Current Consumption Data Field Format.
MSB             LSB
+5V Secondary Current
>+8V Receiver Current
+15V Receiver Current
-15V Receiver Current
RDM Motor Current
FDM Motor Current

4.1.5 AIP Minor Frame Formats

The spacecraft's AMSU Instrument Processor (AIP) collects digital data from the AMSU-A, AMSU-B (NOAA KLM), and MHS/MIU (NOAA-N, -P) sensors. This data consists of earth view pixel data, housekeeping data and space and blackbody view data.

4.1.5.1 AIP Minor Frame Format for NOAA KLM

Figure 4.1.5.1-1 shows the AIP telemetry word location in the frame format, and Table 4.1.5.1-1 contains AIP telemetry word titles, locations within the frame, and word descriptions in tabular form.

Figure 4.1.5.1-1. AIP Output Format for NOAA KLM.
0  -  1  -  2

22-bit sync

3
///
4
MFC
(See Note 1) 6  -  7
///
8  -  20
|--------------------------------AMSU-A1 (Words 8 through 33)----------------------------->
21  -  33
<-------------------------------------------------AMSU-A1------------------------------------------------|
34  -  40
|-----------AMSU-A2 (Words 34 through 47)--->
41  -  47
<-----------------------AMSU-A2--------------------|
48  -  60
|-------------------------------------AMSU-B (Words 48 through 97)--------------------------------->
61  -  80
<--- -------------------------------------------------------------------------------AMSU-B------------------------------------------------------------------------------>
81  -  97
<-----------------------------------------------------------------AMSU-B----------------------------------------------------------------->|
98  -  100
///
101
///
102
(See Note 2)
103  -  105
20-bit sync
SC ID
106
(See Notes 1 and 3)
107
(See Notes 3 and 4)
108
(See Note 4)
109 - 110
CMMD
VER
111
(See Note 5)
112 - 114
Analog subcom 32/16/1 seconds
115 (See Note 5) 116
(See Note 6)
117
DAU-1
118
DAU-2
119
HIRS/3
120
HIRS/3
121  -  122
DCS-2
123 - 124
SEM
125  -  126
HIRS/3
127  -  128
DCS-2
129 - 130
HIRS/3
131 - 132
DCS-2
133  -  134
HIRS/3
135  -  136
DCS-2
137  -  138
HIRS/3
139  -  140
SBUV/2
141  -  42
HIRS/3
143 - 144
DCS-2
145  -  146
HIRS/3
147  -  148
DCS-2
149  -  154
|<----------CPU-A Telemetry---------->|
155  -  156
DCS-2
157  -  158
HIRS/3
159  -  160
DCS-2
161  - 162
HIRS/3/
163 - 164
DCS-2
165  -  166
HIRS/3
167  -  168
HIRS/3
169 - 170
HIRS/3
171  -  172
DCS-2
173  -  174
HIRS/3
175  -  176
DCS-2
177  -  178
HIRS/3
179  -  180
DCS-2
181  -  182
HIRS/3
183 - 184
SBUV/2
185  -  186
HIRS/3
187  -  188
HIRS/3
189 - 190
DCS-2
191  -  192
HIRS/3
193  -  194
DCS-2
195  -  196
HIRS/3
197  -  198
DCS-2
199  -  200
|-----CPU-B >
201  -  204
< Telemetry-------------|
205
///
206  -  207
(See Note 7)
 
NOTES: /// indicates spare bits and reads 010101, etc.
1. Words 5 and 106: Bit 1-Command Verification Status, Bits 2 & 3- TIP status, Bits 4, 5 & 6- Major Frame Counter
2. Word 102: Bits 1 & 2 spare, followed by 6 bits AMSU parity
3. Words 106 and 107: 9 Bit Dwell address
4. Words 107 and 108: 9 Bit Subcommutation counter
5. Digital-B Subcommutation (32 second)
6. Analog Subcommutation
7. Word 206: 2 bits CPU data status followed by 6 bits TIP parity; word 207: 2 bits spare followed by 6 bits TIP parity calculated by AIP

Table 4.1.5.1-1. AIP Minor Frame Format for NOAA KLM.
Function No. of
Words
Word
Position
Bit No. 1 2 3 4 5 6 7 8
Plus Word Code & Meaning
Frame Sync 3 0 1 1 1 1 0 0 1 1 Frame sync is first 22 bits. Last 2 bits of word 2 are: 00
1 0 1 1 0 1 0 1 1
2 0 0 0 0 0 0 0 0
Spare 1 3 0 1 0 1 0 1 0 1
Minor Frame
Counter
1 4 0 0 0 0 0 0 0 0 Represents minor frame 0
0 1 0 0 1 1 1 1 Represents minor frame 79
MSB is first.
Major frame
Counter
1 5 First six bits are 000000. Last 2 bits are major (8 sec) framecounter. The major frame counter is incremented every 80 minor frames. Bits 7 and 8 of minor frame 5 will count 8-second intervals, the count overflowing to 0 synchronous with the TIP 32-second major frame pulse.
Spare 2 6 0 1 0 1 0 1 0 1
7 0 1 0 1 0 1 0 1
AMSU-A1 26 8
thru
33
8 Bit words are formed by the AMSU-A1 experiment and are read out by the AMSU Information Processor at anaverage rate of 260 words per second.
AMSU-A2 14 34
thru
47
8 Bit words are formed by the AMSU-A2 experiment and are read out by the AMSU Information Processor at an average rate of 140 words per second.
AMSU-B 50 48
thru
97
8 Bit words are formed by the AMSU-B experiment and are read out by the AMSU Information Processor at an average rate of 500 words per second.
Spare 4 98
thru
101
0 1 0 1 0 1 0 1
0 1 0 1 0 1 0 1 . . . . . . . .
AMSU Parity
1
102 Bit 1: 0
Bit 2: 1
Bit 3: Even parity check words 2 thru 18
Bit 4: Even parity check words 19 thru 35
Bit 5: Even parity check words 36 thru 52
Bit 6: Even parity check words 53 thru 69
Bit 7: Even parity check words 70 thru 86
Bit 8: Even parity check words 87 thru Bit 7 of word 102
TIP Data
104
103
thru
206
Identical to TIP minor frame format in Table 4.3.3.1-1.
TIP Parity 1 207 Bit 1: 0
Bit 2: 1
Bit 3: Even parity check words 105 thru 121
Bit 4: Even parity check words 122 thru 138
Bit 5: Even parity check words 139 thru 155
Bit 6: Even parity check words 156 thru 172
Bit 7: Even parity check words 173 thru 189
Bit 8: Even parity check words 190 thru Bit 7 of word 206
This parity word amounts to an AIP recalculation of the TIP parity which was calculated by the TIP in TIP word 103 (AIP word 206).

4.1.5.2 AIP Minor Frame Format for NOAA-N,-P

Figure 4.1.5.2-1 shows the AIP telemetry word location for NOAA-N,-P. Table 4.1.5.2-1 contains AIP telemetry word titles, locations within the frame, and word descriptions in tabular form for NOAA-N,-P.

Figure 4.1.5.2-1. AIP Output Format for NOAA-N, -P.

Figure showing AIP Output Format for NOAA-N,P.

MIU/MHS Status Words
Table 4.1.5.2-1. AIP Minor Frame Format for NOAA-N, -P.
Function No. of Words Word Position Bit No.
1 2 3 4 5 6 7 8 plus word code and meaning
Notes
22-bit Frame Sync 3 0-2 22-bit Frame Sync 1
Spare 1 3 0 1 0 1 0 1 0 1  
Minor Frame Counter 1 4 0 0 0 0 0 0 0 0 represents Minor Frame 0;
0 1 0 0 1 1 1 1 represents Minor Frame 79;MSB is first.
2
8 Second Frame Counter 1 5 First six bits are 0 0 0 0 0 0. Last two bits are major(8-sec) frame counter. The major frame counter is incremented every 80 minor frames. Bits 7 and 8 ofminor frame 5 will count 8-second intervals, the count overflowing to 0 synchronous with the TIP 32-secondmajor frame pulse.  
MIU/MHS Status 2 6-7 8-bit words formed by the MIU to record status of the MHS and the MIU and read by the AMSU Information Processor at an average rate of 20 words per second.  
AMSU-A1 26 8
thru
33
8-bit words are formed by the AMSU-A1 experiment and are read out by the AMSU Information Processor (AIP) at an average rate of 260 words per second.  
AMSU-A2 14 34
thru
47
8-bit words are formed by the AMSU-A2 experiment and are read out by the AIP at an average rate of 140 words per second.  
MHS 50 48
thru
97
8-bit words are formed by the MHS experiment and are read out by the AIP through the MHS Interface Unit at an average rate of 540 words per second.  
4 98
thru
101
 
6-bit TIP Parity (AMSU) 1 102 Bit 1: 0  
Bit  2:1  
Bits 3-8: 6-bit TIP Parity (AMSU)  
20-bit TIP sync 2- 103
104
105
Bits 1-8: 20-bit TIP sync
Bits 1-8
Bits 1-4
4
4-bit DATA ADDR 1- 105 Bits 5-8: 4-bit Data Address 4
Status Bits 1- 106 Bit 1: 1-bit CV Status
Bits 2-3: 2-bit TIP Status
Bits 4-6: 3-bit MF Count
4
9-bit DWELL ADDR 1+ 106
107
Bits 7-8: 9-bit DWELL Address
Bits 1-7
4
9-bit SUBCOM COUNT 1+ 107
108
Bit 8: 9-bit SUBCOM Count
Bits 1-8
4
CV 2 109-110 Command Verification 4
DIG B SUBCOM 1 111 Digital B SUBCOM (3.2 sec) 4
ANALOG SUBCOM 1 112 Analog SUBCOM (32 sec) 4
ANALOG SUBCOM 1 113 Analog SUBCOM (16 sec) 4
ANALOG SUBCOM 1 114 Analog SUBCOM (1 sec) 4
DIG B SUBCOM2 1 115 Digital B SUBCOM2 (3.2 sec) 4
ANALOG SUBCOM2 1 116 Analog SUBCOM2 (16 sec) 4
DAU1 1 117 Decryption Authentication Unit 1 4
DAU2 1 118 Decryption Authentication Unit 2 4
HIRS/4 2 119-120 HIRS/4 4
DCS-2 2 121-122 DCS-2 4
SEM 2 123-124 SEM 4
HIRS/4 2 125-126 HIRS/4 4
DCS-2 2 127-128 DCS-2 4
HIRS/4 2 129-130 HIRS/4 4
DCS-2 2 131-132 DCS-2 4
HIRS/4 2 133-134 HIRS/4 4
DCS-2 2 135-136 DCS-2 4
HIRS/4 2 137-138 HIRS/4 4
SBUV/2 2 139-140 SBUV/2 4
HIRS/4 2 141-142 HIRS/4 4
DCS-2 2 143-144 DCS-2 4
HIRS/4 2 145-146 HIRS/4 4
DCS-2 2 147-148 DCS-2 4
CPU A TELEMETRY 2 149-154 CPU A Telemetry 4
DCS-2 2 155-156 DCS-2 4
HIRS/4 2 157-158 HIRS/4 4
DCS-2 2 159-160 DCS-2 4
HIRS/4 2 161-162 HIRS/4 4
DCS-2 2 163-164 DCS-2 4
HIRS/4 2 165-166 HIRS/4 4
DCS-2 2 167-168 DCS-2 4
HIRS/4 2 169-170 HIRS/4 4
DCS-2 2 171-172 DCS-2 4
HIRS/4 2 173-174 HIRS/4 4
DCS-2 2 175-176 DCS-2 4
HIRS/4 2 177-178 HIRS/4 4
DCS-2 2 179-180 DCS-2 4
HIRS/4 2 181-182 HIRS/4 4
SBUV 2 183-184 SBUV 4
HIRS/4 2 185-186 HIRS/4 4
HIRS/4 2 187-188 HIRS/4 4
DCS-2 2 189-190 DCS-2 4
HIRS/4 2 191-192 HIRS/4 4
DCS-2 2 193-194 DCS-2 4
HIRS/4 2 195-196 HIRS/4 4
DCS-2 2 197-198 DCS-2 4
CPU B TELEMETRY 6 199-204 CPU B Telemetry 4
MIU 1 205 Bits 1-8: MIU 4
2-bit CPU STAT 1- 206 Bits 1-2: 2-bit CPU Status 4
6-bit TIP Parity (TIP) 1- 206 Bits 3-8: 6-bit TIP Parity (TIP) 4
6-bit TIP Parity (AIP) 1 207 Bit 1: 0
Bit 2: 1
Bits 3-8: 6-bit TIP Parity (AIP)
 
NOTES:
1. Frame sync is first 22 bits, last two bits of word 2 are: 0 0.
2. Minor Frame Period = 0.1 sec
3. Output Data Rate = 16.64 kbps
4. Words 103 through 206 are identical to a TIP Orbital Mode Minor Frame's words 0 through 103.

Amended March 10, 2004

Amended September 1, 2004

Amended March 8, 2005

Amended March 14, 2005

Amended May 25, 2005

Amended September 14, 2005

Amended November 7, 2005


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