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, 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. Direct readout users should be aware of this problem, although the switch should be transparent to Level 1b users as the channels were corrected (switched back) by the ingest software. Only the radiometric data was affected. The housekeeping temperatures, antenna patterns, beam efficiency and beam widths of channels 15 and 7 oscillators are correct as they are now and were not affected by the switch. Band pass for channels 7 and 15 was also 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. 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. Table 4.1.2-1 shows the general characteristics of the HRPT transmission system, while the general HRPT parameters are shown in Table 4.1.2-2.

Table 4.1.2-1. HRPT Transmission Characteristics.
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
Transmitter Power (EOL)	6.35 W (38.03 dBm)
Radiated Power (dBm, @ 63 degrees)	40.13
Polarization	RCP

Table 4.1.2-2. HRPT Parameters.
Major Frame
Rate	2 major frames/sec
Minor Frames/Major Frame	3
Minor Frame
Rate	6 minor frames/sec
Number of words	11090
Format	SeeTable 4.1.3-1
Word Parameters
Rate	66,540 words/sec
Number of bits/word	10
Order	Bit 1=MSB, Bit 10=LSB
Bit Parameters
Rate	665,400 bits/sec
Format	Split phase
Data "0"	+68/-68 degrees
Data "1"	-68/+68 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. 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 minor frame formats are shown in Table 4.1.3-1 and Figure 4.1.3-1.

Table 4.1.3-1. HRPT Minor Frame Format.
Function	No. of Words	Word Position	Bit No. 1 2 3 4 5 6 7 8 9 10 Plus Word Code & Meaning
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 See Note 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 See Note 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 (word 2), etc.
Space Data	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-see Note 3)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.
Spare Words	127	624	1 0 1 0 0 0 1 1 1 0
		625	1 1 1 0 0 0 1 0 1 1
		626	0 0 0 0 1 0 1 1 1 1
		627	1 0 1 1 0 0 0 1 1 1
		628	1 1 0 1 0 1 0 0 1 0
		...	... See Note 4
		748	1 0 0 1 0 1 1 0 1 0
		749	1 1 0 0 1 0 0 0 1 0
		750	1 0 0 0 0 0 0 0 0 0
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
		...	... See Note 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
		...	... See Note 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: First 60 bits from 63 bit PN generator started in the all 1's state. The generator polynomial is X6+X5+X2+X+1 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. 104 words includes 103 words of the AMSU frame plus the first word of TIP 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. 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. 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.

Of special note here 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.

Figure 4.1.3-1. AIP Output Format.

0-1-2 22-Bit Sync

3 ////////

4 MFC

5 1)

6-7 ////////////////

8-23 AMSU-A1 (Words 8 through 33)

24-33 AMSU-A1

34-47 AMSU-A2 (Words 34 through 47)

48-71 AMSU-B (Words 48 through 97)

72--95 AMSU-B (Words 48 through 97)

96-97 AMSU-B

98-101 ///// Spare /////

102 2)

103-105 20-Bit Sync SC ID

106 1), 3)

107 3), 4)

108 4)

109-110 CMMD VER

111 5)

112-114 Analog SUBCOM 32/16/1 Seconds

115 5)

116 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

141-142 HIRS/3

143 DCS-2

144 DCS-2

145-146 HIRS/3

147-148 DCS-2

149-154 CPU 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 DCS-2

168 DCS-2

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 HIRS/3

192 HIRS/3

193-194 DCS-2

195-196 HIRS/3

197-198 DCS-2

199-204 CPU Telemetry

205 ////////

206-207 7)

///// Indicates "Spare" and Reads 010101 etc.

Notes: Words 5 and 106: Bit 1 Command Verification Status, Bits 2&3-TIP status, Bits 4,5 & 6-Major Frame Counter. Word 102: Bits 1&2 spare, followed by 6 bits AMSU parity. Words 106 and 107: 9 Bit Dwell address. Words 107 and 108: 9 Bit Subcommutation counter. Digital-B Subcommutation (32 second). Analog Subcommutation. 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.

4.1.4 Digital "A" Telemetry

4.1.4.1 AMSU-A1

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 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.
A1 Frame Byte Number	Parameter
1-3	Sync. Sequence (FF Hex)
4	Unit Identification and Serial Number
5	Digital Housekeeping Data 1
6	Digital Housekeeping Data 2
7	Digital Housekeeping Data 3
8	Digital Housekeeping Data 4
9	Reflector 1, Position 1, MSP, First reading
10	Reflector 1, Position 1, LSP, First reading
11	Reflector 2, Position 1, MSP, First reading
12	Reflector 2, Position 1, LSP, First reading
13	Reflector 1, Position 1, MSP, Second reading
14	Reflector 1, Position 1, LSP, Second reading
15	Reflector 2, Position 1, MSP, Second reading
16	Reflector 2, Position 1, LSP, Second reading
17	Scene Position 1, Channel 3, MSP
18	Scene Position 1, Channel 3, LSP
19	Scene Position 1, Channel 4, MSP
20	Scene Position 1, Channel 4, LSP
...	...
41	Scene Position 1, Channel 15, MSP
42	Scene Position 1, Channel 15, LSP
43	Reflector 1, Position 2, MSP, First reading
44	Reflector 1, Position 2, LSP, First reading
45	Reflector 2, Position 2, MSP, First reading
46	Reflector 2, Position 2, LSP, First reading
47	Reflector 1, Position 2, MSP, Second reading
48	Reflector 1, Position 2, LSP, Second reading
49	Reflector 2, Position 2, MSP, Second reading
50	Reflector 2, Position 2, LSP, Second reading
51	Scene Position 2, Channel 3, MSP
52	Scene Position 2, Channel 3, LSP
...	...
75	Scene Position 2, Channel 15, MSP
76	Scene Position 2, Channel 15, LSP
77	Reflector 1, Position 3, MSP, First reading
78	Reflector 1, Position 3, LSP, First reading
79	Reflector 2, Position 3, MSP, First reading
80	Reflector 2, Position 3, LSP, First reading
81	Reflector 1, Position 3, MSP, Second reading
82	Reflector 1, Position 3, LSP, Second reading
83	Reflector 2, Position 3, MSP, Second reading
84	Reflector 2, Position 3, LSP, Second reading
85	Scene Position 3, Channel 3, MSP
86	Scene Position 3, Channel 3, LSP
...	...
1027	Scene Position 30, Channel 15, MSP
1028	Scene Position 30, Channel 15, LSP
1029	Reflector 1, Cold Cal. Position, MSP, First reading
1030	Reflector 1, Cold Cal. Position, LSP, First reading
1031	Reflector 2, Cold Cal. Position, MSP, First reading
1032	Reflector 2, Cold Cal. Position, LSP, First reading
1033	Reflector 1, Cold Cal. Position, MSP, Second reading
1034	Reflector 1, Cold Cal. Position, LSP, Second reading
1035	Reflector 2, Cold Cal. Position, MSP, Second reading
1036	Reflector 2, Cold Cal. Position, LSP, Second reading
1037	Cold Calibration 1, Channel 3, MSP
1038	Cold Calibration 1, Channel 3, LSP
1039	Cold Calibration 1, Channel 4, MSP
1040	Cold Calibration 1, Channel 4, LSP
...	...
1061	Cold Calibration 1, Channel 15, MSP
1062	Cold Calibration 1, Channel 15, LSP
1063	Cold Calibration 2, Channel 3, MSP
1064	Cold Calibration 2, Channel 3, LSP
1065	Cold Calibration 2, Channel 4, MSP
1066	Cold Calibration 2, Channel 4, LSP
...	...
1087	Cold Calibration 2, Channel 15, MSP
1088	Cold Calibration 2, Channel 15, LSP
1089	Temp Sensor 1, MSP
1090	Temp Sensor 1, LSP
1091	Temp Sensor 2, MSP
1092	Temp Sensor 2, LSP
...	...
1177	Temp Sensor 45, MSP
1178	Temp Sensor 45, LSP
1179	Temp Sensor Reference Voltage, MSP
1180	Temp Sensor Reference Voltage, LSP
1181	Reflector 1 Warm Cal. Position, MSP, First reading
1182	Reflector 1 Warm Cal. Position, LSP, First reading
1183	Reflector 2 Warm Cal. Position, MSP, First reading
1184	Reflector 2 Warm Cal. Position, LSP, First reading
1185	Reflector 1 Warm Cal. Position, MSP, Second reading
1186	Reflector 1 Warm Cal. Position, LSP, Second reading
1187	Reflector 2 Warm Cal. Position, MSP, Second reading
1188	Reflector 2 Warm Cal. Position, LSP, Second reading
1189	Warm Calibration 1, Channel 3, MSP
1190	Warm Calibration 1, Channel 3, LSP
...	...
1213	Warm Calibration 1, Channel 15, MSP
1214	Warm Calibration 1, Channel 15, LSP
1215	Warm Calibration 2, Channel 3, MSP
1216	Warm Calibration 2, Channel 3, LSP
...	...
1239	Warm Calibration 2, Channel 15, MSP
1240	Warm Calibration 2, Channel 15, LSP
...	...
1241-1243	Sync. Sequence (FF Hex)
1244	Unit Identification and Serial Number
Notes: The MSP is the most significant portion of a particular measurement; the LSP is the least significant portion of the particular measurement. 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 ½ way through the integration period. 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. Format of Position data is: DDDDDDDDDDDDDDE0, where: D = Data E = Error bit: 0=not in spec, 1=spec. 0 = Zero Format of Radiometer data is: DDDDDDDDDDDDDDD0, where: D = Data 0 = Zero Temperature Sensor Reference Voltage utilized for temperature sensors 36-45 only.

4.1.4.2 AMSU-A2

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.
A2 Frame Byte Number	Parameter
1-3	Sync. Sequence (FF Hex)
4	Unit Identification and Serial Number
5	Digital Housekeeping Data 1
6	Digital Housekeeping Data 2
7	Digital Housekeeping Data 3
8	Digital Housekeeping Data 4
9	Reflector, Position 1, MSP, First reading
10	Reflector, Position 1, LSP, First reading
11	Reflector, Position 1, MSP, Second reading
12	Reflector, Position 1, LSP, Second reading
13	Scene Position 1, Channel 1, MSP
14	Scene Position 1, Channel 1, LSP
15	Scene Position 1, Channel 2, MSP
16	Scene Position 1, Channel 2, LSP
17	Reflector, Position 2, MSP, First reading
18	Reflector, Position 2, LSP, First reading
19	Reflector, Position 2, MSP, Second reading
20	Reflector, Position 2, LSP, Second reading
21	Scene Position 2, Channel 1, MSP
22	Scene Position 2, Channel 1, LSP
23	Scene Position 2, Channel 2, MSP
24	Scene Position 2, Channel 2, LSP
25	Reflector, Position 3, MSP, First reading
26	Reflector, Position 3, LSP, First reading
27	Reflector, Position 3, MSP, Second reading
28	Reflector, Position 3, LSP, Second reading
29	Scene Position 3, Channel 1, MSP
30	Scene Position 3, Channel 1, LSP
...	...
247	Scene Position 30, Channel 2, MSP
248	Scene Position 30, Channel 2, LSP
249	Reflector, Cold Calibration Position, MSP, First reading
250	Reflector, Cold Calibration Position, LSP, First reading
251	Reflector, Cold Calibration Position, MSP, Second reading
252	Reflector, Cold Calibration Position, LSP, Second reading
253	Cold Calibration 1, Channel 1, MSP
254	Cold Calibration 1, Channel 1, LSP
255	Cold Calibration 1, Channel 2, MSP
256	Cold Calibration 1, Channel 2, LSP
257	Cold Calibration 2, Channel 1, MSP
258	Cold Calibration 2, Channel 1, LSP
259	Cold Calibration 2, Channel 2, MSP
260	Cold Calibration 2, Channel 2, LSP
261	Temperature Sensor 1, MSP
262	Temperature Sensor 1, LSP
263	Temperature Sensor 2, MSP
264	Temperature Sensor 2, LSP
...	...
297	Temperature Sensor 19, MSP
298	Temperature Sensor 19, LSP
299	Temperature Sensor Reference Voltage, MSP
300	Temperature Sensor Reference Voltage, LSP
301	Reflector Warm Calibration Position, MSP, First reading
302	Reflector Warm Calibration Position, LSP, First reading
303	Reflector Warm Calibration Position, MSP, Second reading
304	Reflector Warm Calibration Position, LSP, Second reading
305	Warm Calibration 1, Channel 1, MSP
306	Warm Calibration 1, Channel 1, LSP
307	Warm Calibration 1, Channel 2, MSP
308	Warm Calibration 1, Channel 2, LSP
309	Warm Calibration 2, Channel 1, MSP
310	Warm Calibration 2, Channel 1, LSP
311	Warm Calibration 2, Channel 2, MSP
312	Warm Calibration 2, Channel 2, LSP
313-315	Synchronization Sequence (FF Hex)
316	Unit Identification and Serial Number
Notes: MSP is the most significant portion of a particular measurement while the LSP is the least significant portion of the particular measurement. 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. 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. Format of Position data is DDDDDDDDDDDDDDE0 D=Data E=Error bit: 0=not in spec, 1=spec. 0=Zero Format of Radiometer data is: DDDDDDDDDDDDDDD0 D=Data 0=Zero Temperature sensor reference voltage is utilized for temperature sensors 13 through 19 only.

4.1.4.3 AMSU-B

Digital "A" 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 ms of the start of the minor frame (except in frames 1 and 80). Table 4.1.4.3-1 shows the AMSU-B digital A data format.

  Word Length:16 bits

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

  Table 4.1.4.3-1. AMSU-B Data Format.
  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 on the Previous Tables:

  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 the Table 4.1.4.3-1.

     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.

  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.

  4.1.5 AIP Minor Frame Formats

  The spacecraft's AMSU Instrument Processor (AIP) collects digital data from the AMSU-A and AMSU-B sensors. This data consists of earth view pixel data, housekeeping data and space and blackbody view data. Table 4.1.5-1 contains the AIP Minor Frame Format.

  Table 4.1.5-1. AIP Minor Frame Format.
  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) frame counter. 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 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 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 4.3.4.3.1-7
  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).

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