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NOAA KLM User's Guide

Section 8.3.1.6.3.2
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8.3.1.6.3.2 NOAA-N Format (version 3, post-April 28, 2005, all spacecraft)

The AMSU-A Data Record format is documented in Table 8.3.1.6.3.2-1. See the legend in Section 8.3.1.1 for further explanation of the headings on this table.

Table 8.3.1.6.3.2-1. Format of AMSU-A Data Record (version 3, post-April 28, 2005, all spacecraft).
Field Name Start Octet End Octet Data Type Word Size Number of Words Scale Factor Units Notes
Scan Line Number (cumulative, starting with 1) 1 2 u 2 1 0    
Scan Line Year (four digits, e.g., 2000) 3 4 u 2 1 0 year  
Scan Line Day of Year (e.g., 365) 5 6 u 2 1 0 day  
Satellite Clock Drift Delta 7 8 i 2 1 0 milliseconds  
Scan Line UTC Time of Day 9 12 u 4 1 0 milliseconds  
Scan Line Bit Field
bit 15: Satellite direction (0 = northbound data; 1 = southbound data)
bit 14: Clock drift correction (0 = not corrected; 1 = scan time corrected for clock drift)
bits 13-0: <zero fill>		 13 14 u 2 1 0    
Major Frame Count (cumulative, starting with 1) 15 16 u 2 1 0    
<Zero Fill> 17 24 i 4 2 0    
QUALITY INDICATORS
Quality Indicator Bit Field (If a bit is on (=1) then the statement is true.)
bit 31: do not use scan for product generation
bit 30: time sequence error detected within this scan (see below)
bit 29: data gap precedes this scan
bit 28: insufficient data for calibration (see below)
bit 27: earth location data not available (see below)
bit 26: first good time following a clock update (nominally 0)
bit 25: instrument status changed with this scan
bits 24 - 4: <zero fill>
bit 3: AMSU sync error detected
bit 2: AMSU minor frame error detected
bit 1: AMSU major frame error detected
bit 0: AMSU parity error detected		 25 28 u 4 1 0    
Scan Line Quality Flags [Additional Calibration Problem Code] (If a bit is on (=1) then the statement is true. See "Scan Line Quality Flags [Calibration Problem Code]", below.)
bits 7-0: <zero fill>		 29 29 u 1 1 0    
Scan Line Quality Flags [Time Problem Code] (If a bit is on (=1) then the statement is true. All bits off implies the scan time is as expected.)
bit 7: time field is bad but can probably be inferred from the previous good time
bit 6: time field is bad and can't be inferred from the previous good time
bit 5: this record starts a sequence that is inconsistent with previous times (i.e., there is a time discontinuity). This may be associated with a spacecraft clock update. (See bit 26, Quality Indicator Bit Field.)
bit 4: start of a sequence that apparently repeats scan times that have been previously accepted
bits 3-0: <zero fill>		 30 30 u 1 1 0    
Scan Line Quality Flags [Calibration Problem Code] (If a bit is on (=1) then the statement is true. These bits, along with those in "Scan Line Quality Flags [Additional Calibration Problem Code]", complement the channel indicators; all bits set to 0 indicates normal calibration.)
bit 7: scan line was not calibrated because of bad time
bit 6: scan line was calibrated using fewer than the preferred number of scan lines because of proximity to start or end of data set or to a data gap
bit 5: scan line was not calibrated because of bad or insufficient PRT data
bit 4: scan line wa calibrated but with marginal PRT data
bit 3: some uncalibrated channels on this scan (see channel indicators)
bit 2: uncalibrated due to instrument mode
bit 1: questionable calibration because of antenna position error of space view
bit 0: questionable calibration because of antenna position error of blackbody view 		31 31 u 1 1 0    
Scan Line Quality Flags [Earth Location Problem Code] (If a bit is on (=1) then the statement is true. All bits set to 0 implies the earth location was normal.)
bit 7: not earth located because of bad time; earth location fields zero-filled
bit 6: earth location questionable: questionable time code (see time problem flags above)
bit 5: earth location questionable: marginal agreement with reasonableness check
bit 4: earth location questionable: fails reasonableness check
bit 3: earth location questionable because of antenna position check
bits 2-0: <zero fill>		 32 32 u 1 1 0    
Calibration Quality Flags (all bits off implies a good calibration)
Word 1: Channel 1
(all bits off implies a good calibration)
bits 15 - 9: <zero fill>
bit 8: this scan line is either the last one before or the first one after a sudden, anomalous jump (or drop) in calibration counts
bit 7: lunar contamination was detected in the space view counts of this channel
bit 6: the space view couonts of this channel were corrected for lunar contamination when used in the calibration (only applicable if the previous flag [bit 7] is 1; otherwise, zero)
bit 5: All bad blackbody view counts for scan line
bit 4: All bad space view counts for scan line
bit 3: All bad PRTs for this line
bit 2: Marginal blackbody view counts for this line
bit 1: Marginal space view counts for this line
bit 0: Marginal PRT temps on this line
Words 2 - 15: Channels 2 through 15, in order
Word 16: <zero fill>		 33 64 u 2 16 0    
<Zero Fill> 65 80 i 4 4 0    
CALIBRATION COEFFICIENTS
Note: The following coefficients are only available in Full Scan mode, otherwise the coefficient fields are <Zero Fill>. Refer to Digital A Telemetry, Digital Housekeeping Word 1 for the current mode.
Primary Calibration Ch 1 Second Order Term, a2 81 84 i 4 1 19    
Primary Calibration Ch 1 First Order Term, a1 85 88 i 4 1 13    
Primary Calibration Ch 1 Zeroth Order Term, a0 89 92 i 4 1 9    
Primary Calibration Ch 2 Second Order Term, a2 93 96 i 4 1 19    
Primary Calibration Ch 2 First Order Term, a1 97 100 i 4 1 13    
Primary Calibration Ch 2 Zeroth Order Term, a0 101 104 i 4 1 9    
Primary Calibration Ch 3 Second Order Term, a2 105 108 i 4 1 19    
Primary Calibration Ch 3 First Order Term, a1 109 112 i 4 1 13    
Primary Calibration Ch 3 Zeroth Order Term, a0 113 116 i 4 1 9    
Primary Calibration Ch 4 Second Order Term, a2 117 120 i 4 1 19    
Primary Calibration Ch 4 First Order Term, a1 121 124 i 4 1 13    
Primary Calibration Ch 4 Zeroth Order Term, a0 125 128 i 4 1 9    
Primary Calibration Ch 5 Second Order Term, a2 129 132 i 4 1 19    
Primary Calibration Ch 5 First Order Term, a1 133 136 i 4 1 13    
Primary Calibration Ch 5 Zeroth Order Term, a0 137 140 i 4 1 9    
Primary Calibration Ch 6 Second Order Term, a2 141 144 i 4 1 19    
Primary Calibration Ch 6 First Order Term, a1 145 148 i 4 1 13    
Primary Calibration Ch 6 Zeroth Order Term, a0 149 152 i 4 1 9    
Primary Calibration Ch 7 Second Order Term, a2 153 156 i 4 1 19    
Primary Calibration Ch 7 First Order Term, a1 157 160 i 4 1 13    
Primary Calibration Ch 7 Zeroth Order Term, a0 161 164 i 4 1 9    
Primary Calibration Ch 8 Second Order Term, a2 165 168 i 4 1 19    
Primary Calibration Ch 8 First Order Term, a1 169 172 i 4 1 13    
Primary Calibration Ch 8 Zeroth Order Term, a0 173 176 i 4 1 9    
Primary Calibration Ch 9 Second Order Term, a2 177 180 i 4 1 19    
Primary Calibration Ch 9 First Order Term, a1 181 184 i 4 1 13    
Primary Calibration Ch 9 Zeroth Order Term, a0 185 188 i 4 1 9    
Primary Calibration Ch 10 Second Order Term, a2 189 192 i 4 1 19    
Primary Calibration Ch 10 First Order Term, a1 193 196 i 4 1 13    
Primary Calibration Ch 10 Zeroth Order Term, a0 197 200 i 4 1 9    
Primary Calibration Ch 11 Second Order Term, a2 201 204 i 4 1 19    
Primary Calibration Ch 11 First Order Term, a1 205 208 i 4 1 13    
Primary Calibration Ch 11 Zeroth Order Term, a0 209 212 i 4 1 9    
Primary Calibration Ch 12 Second Order Term, a2 213 216 i 4 1 18    
Primary Calibration Ch 12 First Order Term, a1 217 220 i 4 1 13    
Primary Calibration Ch 12 Zeroth Order Term, a0 221 224 i 4 1 9    
Primary Calibration Ch 13 Second Order Term, a2 225 228 i 4 1 19    
Primary Calibration Ch 13 First Order Term, a1 229 232 i 4 1 13    
Primary Calibration Ch 13 Zeroth Order Term, a0 233 236 i 4 1 9    
Primary Calibration Ch 14 Second Order Term, a2 237 240 i 4 1 19    
Primary Calibration Ch 14 First Order Term, a1 241 244 i 4 1 13    
Primary Calibration Ch 14 Zeroth Order Term, a0 245 248 i 4 1 9    
Primary Calibration Ch 15 Second Order Term, a2 249 252 i 4 1 19    
Primary Calibration Ch 15 First Order Term, a1 253 256 i 4 1 13    
Primary Calibration Ch 15 Zeroth Order Term, a0 257 260 i 4 1 9    
Secondary Calibration Ch 1 Second Order Term, a2 261 264 i 4 1 19    
Secondary Calibration Ch 1 First Order Term, a1 265 268 i 4 1 13    
Secondary Calibration Ch 1 Zeroth Order Term, a0 269 272 i 4 1 9    
Secondary Calibration Ch 2 Second Order Term, a2 273 276 i 4 1 19    
Secondary Calibration Ch 2 First Order Term, a1 277 280 i 4 1 13    
Secondary Calibration Ch 2 Zeroth Order Term, a0 281 284 i 4 1 9    
Secondary Calibration Ch 3 Second Order Term, a2 285 288 i 4 1 19    
Secondary Calibration Ch 3 First Order Term, a1 289 292 i 4 1 13    
Secondary Calibration Ch 3 Zeroth Order Term, a0 293 296 i 4 1 9    
Secondary Calibration Ch 4 Second Order Term, a2 297 300 i 4 1 19    
Secondary Calibration Ch 4 First Order Term, a1 301 304 i 4 1 13    
Secondary Calibration Ch 4 Zeroth Order Term, a0 305 308 i 4 1 9    
Secondary Calibration Ch 5 Second Order Term, a2 309 312 i 4 1 19    
Secondary Calibration Ch 5 First Order Term, a1 313 316 i 4 1 13    
Secondary Calibration Ch 5 Zeroth Order Term, a0 317 320 i 4 1 9    
Secondary Calibration Ch 6 Second Order Term, a2 321 324 i 4 1 19    
Secondary Calibration Ch 6 First Order Term, a1 325 328 i 4 1 13    
Secondary Calibration Ch 6 Zeroth Order Term, a0 329 332 i 4 1 9    
Secondary Calibration Ch 7 Second Order Term, a2 333 336 i 4 1 19    
Secondary Calibration Ch 7 First Order Term, a1 337 340 i 4 1 13    
Secondary Calibration Ch 7 Zeroth Order Term, a0 341 344 i 4 1 9    
Secondary Calibration Ch 8 Second Order Term, a2 345 348 i 4 1 19    
Secondary Calibration Ch 8 First Order Term, a1 349 352 i 4 1 13    
Secondary Calibration Ch 8 Zeroth Order Term, a0 353 356 i 4 1 9    
Secondary Calibration Ch 9 Second Order Term, a2 357 360 i 4 1 19    
Secondary Calibration Ch 9 First Order Term, a1 361 364 i 4 1 13    
Secondary Calibration Ch 9 Zeroth Order Term, a0 365 368 i 4 1 9    
Secondary Calibration Ch 10 Second Order Term, a2 369 372 i 4 1 19    
Secondary Calibration Ch 10 First Order Term, a1 373 376 i 4 1 13    
Secondary Calibration Ch 10 Zeroth Order Term, a0 377 380 i 4 1 9    
Secondary Calibration Ch 11 Second Order Term, a2 381 384 i 4 1 19    
Secondary Calibration Ch 11 First Order Term, a1 385 388 i 4 1 13    
Secondary Calibration Ch 11 Zeroth Order Term, a0 389 392 i 4 1 9    
Secondary Calibration Ch 12 Second Order Term, a2 393 396 i 4 1 19    
Secondary Calibration Ch 12 First Order Term, a1 397 400 i 4 1 13    
Secondary Calibration Ch 12 Zeroth Order Term, a0 401 404 i 4 1 9    
Secondary Calibration Ch 13 Second Order Term, a2 405 408 i 4 1 19    
Secondary Calibration Ch 13 First Order Term, a1 409 412 i 4 1 13    
Secondary Calibration Ch 13 Zeroth Order Term, a0 413 416 i 4 1 9    
Secondary Calibration Ch 14 Second Order Term, a2 417 420 i 4 1 19    
Secondary Calibration Ch 14 First Order Term, a1 421 424 i 4 1 13    
Secondary Calibration Ch 14 Zeroth Order Term, a0 425 428 i 4 1 9    
Secondary Calibration Ch 15 Second Order Term, a2 429 432 i 4 1 19    
Secondary Calibration Ch 15 First Order Term, a1 433 436 i 4 1 13    
Secondary Calibration Ch 15 Zeroth Order Term, a0 437 440 i 4 1 9    
<Zero Fill> 441 444 i 2 2 0    
NAVIGATION
<Zero Fill> 445 450 i 2 3 0    
Total Applied Attitude Correction
Word 1: Roll
Word 2: Pitch
Word 3: Yaw		 451 456 i 2 3 3 degrees  
Navigation Status Bit Field
bits 31-18: <zero fill>
bit 17: earth location at the satellite subpoint is accurate and reasonable, i.e., is within tolerance defined by "Nadir Earth Location Tolerance" in header (0 = out of tolerance; 1 = in tolerance)
bit 16: earth location corrected for Euler angles (0=FLASE; 1=TRUE)
bits 15 - 12: earth location indicator (0 = earth location available; 1 = user ephemeris files greater than 24 hours old; 2= no earth location available)
bits 11 - 8: spacecraft attitude control (0 = operating in YGC or NOMINAL mode; 1 = operating in another mode; 2 = attitude exceeds nominal tolerance; 3 = both 1 and 2)
bits 7 - 4: attitude SMODE (0 = NOMINAL mode; 1 = rate nulling mode; 2 = YGC mode; 3 = search mode; 4 = coast mode)
bits 3 - 0: attitude PWTIP$AC (0 = NOMINAL mode/no test; 1 = yaw axis test in progress; 2 = roll axis test in progress; 3 = pitch axis test in progress)		 457 460 u 4 1 0    
Time Associated with Euler Angles 461 464 i 4 1 0 seconds  
Euler Angles
Word 1: Roll
Word 2: Pitch
Word 3: Yaw		 465 470 i 2 3 3 degrees  
Spacecraft Altitude above Reference Ellipsoid 471 472 u 2 1 1 kilometers  
Angular Relationships
(relative azimuth range +/- 180.00)
Word 1: Solar Zenith Angle, FOV 1
Word 2: Satellite Zenith Angle, FOV 1
Word 3: Relative Azimuth Angle, FOV 1
Word 4: Solar Zenith Angle, FOV 2
...
(set of 3 angles every FOV)
...
Word 90: Relative Azimuth Angle, FOV 30		 473 652 i 2 90 2 degrees  
Earth Location
(North latitude and East longitude are positive)
Word 1: Latitude, FOV 1
Word 2: Longitude, FOV 1
Word 3: Latitude, FOV 2
...
(lat/lon word pair for every FOV)
...
Word 60: Longitude, FOV 30		 653 892 i 4 60 4 degrees  
<Zero Fill> 893 896 i 4 1 0    
AMSU-A1 DIGITAL A TELEMETRY
Synchronization Sequence (hex FF) 897 899 u 1 3 0    
Unit Identification and Serial Number
5 = Protoflight Model Module (PFM) s/n 102 (NOAA-L)
9 = Flight Model (FM) 1 s/n 103 (NOAA-K)
13 = FM 2 s/n 104 (NOAA-M)
17 = FM 3, s/n 105 (NOAA-N')
33 = FM 7, s/n 109 (NOAA-N)		 900 900 u 1 1 0    
Digital Housekeeping
Word 1: Data 1
bit 7: <zero fill>
bit 6: cold cal position msb
bit 5: cold cal position lsb
(cold cal position: 0 = 6.667 deg from -Z; 1 = 8.333 deg; 2 = 9.999 deg; 3 = 13.332 deg)
bit 4: nadir mode (0 = not in nadir; 1 = nadir)
bit 3: cold cal mode (0 = not in cold cal; 1 = cold cal)
bit 2: warm cal mode (0 = not in warm cal; 1 = warm cal)
bit 1: full scan mode (0 = not full scan; 1 = full scan)
bit 0: <zero fill>
Word 2: Data 2
bits 7-5: <zero fill>
bit 4: survival heater power (0 = off; 1 = on)
bit 3: PLL power (0 = redundant; 1 = primary)
bit 2: scanner A1-2 power (0 = off; 1 = on)
bit 1: scanner A1-1 power (0 = off; 1 = on)
bit 0: <zero fill>
Words 3-4: <zero fill>		 901 904 u 1 4 0    
Scene Telemetry (Scanner is parked at warm cal position while in warm cal mode, cold cal position while in cold cal mode, and nadir position while in nadir mode (see Digital Housekeeping Word 1, above). In parked modes, words 1 through 17 are repeated 29 times for a total of 30 data sets at the designated scanner position. In full scan mode, the scanner is stepped from positions 1 to 30 as indicated.)
Word 1: Reflector A1-1, position 1, first reading
Word 2: Reflector A1-2, position 1, first reading
Word 3: Reflector A1-1, position 1, second reading
Word 4: Reflector A1-2, position 1, second reading
Words 5 - 17: Scene count at position 1, channels 3 through 15 (in order)
Word 18: Reflector A1-1, position 2, first reading
...
(seventeen words for every position)
...
Words 498 - 510: Scene count at position 30, channels 3 through 15 (in order)		 905 1924 u 2 510 0    
Cold Calibration Telemetry (These words are zero-filled in warm cal, cold cal, and nadir modes. In full scan mode, these words contain the following data.)
Word 1: Reflector A1-1, cold calibration position, first reading
Word 2: Reflector A1-2, cold calibration position, first reading
Word 3: Reflector A1-1, cold calibration position, second reading
Word 4: Reflector A1-2, cold calibration position, second reading
Words 5 - 17: Cold cal count 1, channels 3 through 15 (in order)
Words 18 - 30: Cold cal count 2, channels 3 through 15 (in order)		 1925 1984 u 2 30 0 counts  
Temperature Sensor Telemetry (in counts, all modes)
Word 1: scan motor A1-1
Word 2: scan motor A1-2
Word 3: feed horn A1-1
Word 4: feed horn A1-2
Word 5: RF mux A1-1
Word 6: RF mux A1-2
Words 7 - 12: local oscillator channels 3 through 8
Word 13: local oscillator channel 15
Word 14: PLLO #2 Channels 9 through 14
Word 15: PLLO #1 Channels 9 through 14
Word 16: PLLO (reference oscillator)
Words 17 - 22: Mixer/IF amplifier channels 3 through 8
Word 23: Mixer/IF amplifier channel 9/14
Word 24: Mixer/IF amplifier channel 15
Word 25: IF amplifier channel 11/14
Words 26 - 28: IF amplifier channels 9, 10, and 11 (in order)
Word 29: DC/DC converter
Words 30 - 31: IF amplifier channels 13 and 14 (in order)
Word 32: IF amplifier channel 12
Word 33: RF shelf A1-1
Word 34: RF shelf A1-2
Word 35: Detector/Preamp Assembly
Words 36 - 39: A1-1 warm load 1 through 4
Word 40: A1-1 warm load center
Words 41 - 44: A1-2 warm load 1 through 4
Word 45: A1-2 warm load center
Word 46: reference voltage		 1985 2076 u 2 46 0 counts 4
Warm Calibration Telemetry (These words are zero-filled in warm cal, cold cal, and nadir modes. In full scan mode, these words contain the following data.)
Word 1: Reflector A1-1, warm calibration position, first reading
Word 2: Reflector A1-2, warm calibration position, first reading
Word 3: Reflector A1-1, warm calibration position, second reading
Word 4: Reflector A1-2, warm calibration position, second reading
Words 5 - 17: Warm cal count 1, channels 3 through 15 (in order)
Words 18 - 30: Warm cal count 2, channels 3 through 15 (in order)		 2077 2136 u 2 30 0 counts  
<Zero Fill> 2137 2140 i 4 1 0    
AMSU-A1 DIGITAL B TELEMETRY
Digital B Telemetry Update Flags (If bit=1, associated telemetry item was not updated during most recent minor frame cycle - possibly due to lost frame.)
bit 15: <zero fill>
bit 14: cold cal position, msb
bit 13: cold cal position, lsb
bit 12: antenna in nadir position
bit 11: antenna in cold cal position
bit 10: antenna in warm cal position
bit 9: full scan mode
bits 8 - 6: <zero fill>
bit 5: module power
bit 4: survival heater
bit 3: Phase Lock Loop
bit 2: scanner A1-2 power
bit 1: scanner A1-1 power
bit 0: <zero fill>		 2141 2142 u 2 1 0    
Digital B Telemetry for AMSU-A1
(If bits 9-12 are all set to 0, the instrument is either in the warm calibration position (NOAA KLM) or operating in "NO" mode (NOAA-N,-N'). When in "NO" mode, digital A telemetry, analog telemetry, and bits 3, 13, and 14 of the digital B telemetry should be ignored. For cold cal position bits 13 and 14: 0=6.667; 1=8.333; 2=9.999; 3=13.332 degrees from -Z.)
bit 15: <zero fill>
bit 14: cold cal position, msb
bit 13: cold cal position, lsb
bit 12: antenna in nadir position (0 = no; 1 = yes)
bit 11: antenna in cold cal position (0 = no; 1 = yes)
bit 10: antenna in warm cal position (0 = no, unless bits 9, 11, and 12 also 0; 1 = yes)
bit 9: full scan mode (0 = no; 1 = yes)
bits 8 - 6: <zero fill>
bit 5: module power (0 = disconnect; 1 = connect)
bit 4: survival heater (0 = off; 1 = on)
bit 3: Phase Lock Loop (0 = redundant; 1 = primary)
bit 2: scanner A1-2 power (0 = off; 1 = on)
bit 1: scanner A1-1 power (0 = off; 1 = on)
bit 0: <zero fill>		 2143 2144 u 2 1 0   1
<Zero Fill> 2145 2148 i 4 1 0    
AMSU-A1 ANALOG TELEMETRY
Analog Telemetry Update Flags (If bit = 1, associated telemetry item was not updated during most recent minor frame cycle - possibly due to lost frame.)
bits 31-28: <zero fill>
bit 27: GDO voltage 89.0 GHz Ch. 15
bit 26: PLLO redundant lock detect
bit 25: PLLO primary lock detect
bit 24: LO voltage 55.5 GHz Ch. 8
bit 23: LO voltage 54.94 GHz Ch. 7
bit 22: LO voltage 54.4 GHz Ch. 6
bit 21: LO voltage 53.596 GHz Ch. 5
bit 20: LO voltage 52.8 GHz Ch. 4
bit 19: LO Voltage 50.3 GHz Ch. 3
bit 18: -15 VDC phase lock loop ch. 9/14
bit 17: +15 VDC phase lock loop Ch. 9/14
bit 16: +8.5 VDC phase lock loop Ch. 9/14 (NOAA KLM) or +10 VDC receiver mixer/IF (NOAA-N,-N')
bit 15: +5 VDC (antenna drive)
bit 14: +5 VDC (signal processing)
bit 13: +8 VDC (receiver amplifiers)
bit 12: -15 VDC (antenna drive)
bit 11: -15 VDC (signal processing)
bit 10: +15 VDC (antenna drive)
bit 9: +15 VDC (signal processing)
bit 8: antenna A1-2 drive motor current (avg)
bit 7: antenna A1-1 drive motor current (avg)
bit 6: warm load A1-2 temperature
bit 5: warm load A1-1 temperature
bit 4: RF shelf A1-2 temperature
bit 3: RF shelf A1-1 temperature
bit 2: A1-2 scanner motor temperature
bit 1: A1-1 scanner motor temperature
bit 0: <zero fill>		 2149 2152 u 4 1 0   3
A1 Analog Telemetry (range: 0-255)
Word 1: A1-1 Scanner Motor Temperature
Word 2: A1-2 Scanner Motor Temperature
Word 3: RF Shelf A1-1 Temperature
Word 4: RF Shelf A1-2 Temperature
Word 5: Warm Load A1-1 Temperature
Word 6: Warm Load A1-2 Temperature
Word 7: Antenna A1-1 Drive Motor Current (Avg)
Word 8: Antenna A1-2 Drive Motor Current (Avg)
Word 9: +15 VDC (Signal Processing)
Word 10: +15 VDC (Antenna Drive)
Word 11: -15 VDC (Signal Processing)
Word 12: -15 VDC (Antenna Drive)
Word 13: +8 VDC (Receiver Amplifiers)
Word 14: +5 VDC (Signal Processing)
Word 15: +5 VDC (Antenna Drive)
Word 16: +8.5 VDC Phase Lock Loop Ch. 9/14 (NOAA KLM) or +10 VDC receiver mixer/IF (NOAA-N,-N')
Word 17: +15 VDC Phase Lock Loop Ch. 9/14
Word 18: -15 VDC Phase Lock Loop Ch. 9/14
Word 19: LO Voltage 50.3 GHz Ch. 3
Word 20: LO Voltage 52.8 GHz Ch. 4
Word 21: LO Voltage 53.596 GHz Ch. 5
Word 22: LO Voltage 54.4 GHz Ch. 6
Word 23: LO Voltage 54.94 GHz Ch. 7
Word 24: LO Voltage 55.5 GHz Ch. 8
Word 25: PLLO Primary Lock Detect
Word 26: PLLO Redundant Lock Detect
Word 27: GDO Voltage 89.0 GHz Ch. 15
Word 28: <Zero Fill>		 2153 2180 u 1 28 0 counts 3
<Zero Fill> 2181 2184 i 4 1 0    
AMSU-A2 DIGITAL A TELEMETRY
Synchronization Sequence (hex FF) 2185 2187 u 1 3 0    
Unit Identification and Serial Number
6 = Protoflight Model Module (PFM) s/n 102 (NOAA-K)
10 = Flight Model (FM) 1 s/n 103 (NOAA-L)
14 = FM 2 s/n 104 (NOAA-M)
18 = FM 3, s/n 105 (NOAA-N)
26 = FM 5, s/n 107 (NOAA-N')		 2188 2188 u 1 1 0    
Digital Housekeeping
Word 1: Data 1
bit 7: <zero fill>
bit 6: cold cal position msb
bit 5: cold cal position lsb
bit 4: nadir mode (0 = not in nadir; 1 = nadir)
bit 3: cold cal mode (0 = not in cold cal; 1 = cold cal)
bit 2: warm cal mode (0 = not in warm cal; 1 = warm cal)
bit 1: full scan mode (0 = not full scan; 1 = full scan)
bit 0: <zero fill>
Word 2: Data 2
bits 7-5: <zero fill>
bit 4: survival heater power (0 = off; 1 = on)
bit 3: <zero fill>
bit 2: scanner compensator power (0 = off; 1 = on)
bit 1: scanner A2 power (0 = off; 1 = on)
bit 0: <zero fill>
Word 3: <zero fill>
Word 4: <zero fill> 		2189 2192 u 1 4 0    
Scene Telemetry
Scanner is parked at warm cal position while in warm cal mode, cold cal position while in cold cal mode, and nadir position while in nadir mode (see Digital Housekeeping Word 1, above). In parked modes, words 1 through 4 are repeated 29 times for a total of 30 data sets at the designated scanner position. In full scan mode, the scanner is stepped from positions 1 to 30 as indicated.
Word 1: Reflector, position 1, first reading
Word 2: Reflector, position 1, second reading
Words 3 - 4: Scene count at position 1, Channels 1 and 2 (in order)
Word 5: Reflector, position 2, first reading
...
(four words every position)
...
Words 119-120: Scene count at position 30, Channels 1 and 2 (in order)		 2193 2432 u 2 120 0    
Cold Calibration Telemetry (These words are zero-filled in warm cal, cold cal, and nadir modes. In full scan mode, these words contain the following data)
Word 1: Reflector, cold calibration position, first reading
Word 2: Reflector, cold calibration position, second reading
Words 3 - 4: Cold cal count 1, channels 1 and 2
Words 5 - 6: Cold cal count 2, channels 1 and 2		 2433 2444 u 2 6 0 counts  
Temperature Sensor Telemetry
Word 1: scan motor
Word 2: feed horn
Word 3: RF mux/diplexer
Words 4 - 5: Mixer/IF amplifier channels 1 and 2
Words 6 - 7: local oscillator channels 1 and 2
Word 8: compensation motor
Word 9: subreflector
Word 10: DC/DC converter
Word 11: RF shelf A2
Word 12: Detector/Preamplifier Assembly
Word 13: Warm load center
Words 14 - 19: Warm load 1 through 6 (in order)
Word 20: Reference voltage		 2445 2484 u 2 20 0 counts 2,4
Warm Calibration Telemetry (These words are zero-filled in warm cal, cold cal, and nadir modes. In full scan mode, these words contain the following data.)
Word 1: Reflector, warm calibration position, first reading
Word 2: Reflector, warm calibration position, second reading
Words 3 - 4: Warm calibration 1, channels 1 and 2
Words 5 - 6: Warm calibration 2, channels 1 and 2		 2485 2496 u 2 6 0 counts  
<Zero Fill> 2497 2500 i 4 1 0    
AMSU-A2 DIGITAL B TELEMETRY
Digital B Telemetry Flags (If bit=1, associated telemetry item was not updated during most recent minor frame cycle - possibly due to lost frame.)
bit 15: <zero fill>
bit 14: cold cal position, msb
bit 13: cold cal position, lsb
bit 12: antenna in nadir position
bit 11: antenna in cold cal position
bit 10: antenna in warm cal position
bit 9: full scan mode
bits 5 - 8: <zero fill>
bit 4: survival heater
bit 3: module power
bit 2: compensator motor
bit 1: scanner A2 power
bit 0: <zero fill>		 2501 2502 u 2 1 0    
Digital B Telemetry for AMSU-A2 (If bits 9-12 are all set to 0, the instrument is either in the warm calibration position (NOAA KLM) or operating in "NO" mode (NOAA-N,-N'). When in "NO" mode, digital A telemetry, analog telemetry, and bits 13 and 14 of the digital B telemetry should be ignored. For cold cal position bits 13 and 14: 0 = 6.667; 1 = 8.333; 2 = 9.999; 3 = 13.332 degrees from -Z.)
bit 15: <zero fill>
bit 14: cold cal position, msb
bit 13: cold cal position, lsb
bit 12: antenna in nadir position (0 = no; 1 = yes)
bit 11: antenna in cold cal position (0 = no; 1 = yes)
bit 10: antenna in warm cal position (0 = no; 1 = yes)
bit 9: full scan mode (0 = no; 1 = yes)
bits 5 - 8: <zero fill>
bit 4: survival heater (0 = off; 1 = on)
bit 3: module power (0 = disconnect; 1 = connect)
bit 2: compensator motor (0 = off; 1 = on)
bit 1: scanner A2 power (0 = off; 1 = on)
bit 0: <zero fill>		 2503 2504 u 2 1 0   1
<Zero Fill> 2505 2508 i 4 1 0    
AMSU-A2 ANALOG TELEMETRY DATA
Analog Telemetry Update Flags (If bit = 1, associated telemetry item was not updated during most recent minor frame cycle - possibly due to lost frame)
bits 31-16: <zero fill>
bit 15: LO voltage Ch. 2 (31.4 GHz)
bit 14: LO voltage Ch. 1 (23.8 GHz)
bit 13: +5 VDC (antenna drive)
bit 12: +5 VDC (signal processing)
bit 11: +8 VDC (receiver) (NOAA KLM) or +10 VDC (receiver/mixer/IF) (NOAA-N,N')
bit 10: -15 VDC (antenna drive)
bit 9: -15 VDC (signal processing)
bit 8: +15 VDC (antenna drive)
bit 7: +15 VDC (signal processing)
bit 6: antenna drive motor current (avg)
bit 5: compensator motor current (avg)
bit 4: warm load A2 temperature
bit 3: RF shelf temperature
bit 2: compensator motor temperature
bit 1: scanner motor temperature
bit 0: <Zero Fill>
 2509 2512 u 4 1 0   3
A2 Analog Telemetry (range: 0-255)
Word 1: Scanner Motor Temperature
Word 2: Compensator Motor Temperature
Word 3: RF Shelf Temperature
Word 4: Warm Load A2 Temperature
Word 5: Compensator Motor Current (Avg)
Word 6: Antenna Drive Motor Current (Avg)
Word 7: +15 VDC (Signal Processing)
Word 8: +15 VDC (Antenna Drive)
Word 9: -15 VDC (Signal Processing)
Word 10: -15 VDC (Antenna Drive)
Word 11: +8 VDC (Receiver) (NOAA KLM) or +10 VDC (receiver/mixer/IF) (NOAA-N,N')
Word 12: +5 VDC (Signal Processing)
Word 13: +5 VDC (Antenna Drive)
Word 14: LO Voltage Ch. 1 (23.8 GHz)
Word 15: LO Voltage Ch. 2 (31.4 GHz)
Word 16: <Zero Fill>		 2513 2528 u 1 16 0 counts 3
LUNAR CONTAMINATION CORRECTION
Space View Count Corrections, ΔCc (ΔCc = raw space count - corrected space count. If the ΔCc value is subtracted from the raw space counts, the value of the corrected space counts used in the calibration is obtained. A value of ΔCc=0 indicates that no correction was made. NOTE: The raw space counts are the "cold cal" counts of the "Cold Calibration Telemetry" fields. Range: 0-100)
Word 1: ΔCc for channel 1
Words 2-15: ΔCc's for channels 2-15, in order		 2529 2543 u 1 15 0 counts  
<Zero Fill> 2544 2544 i 1 1 0    
Lunar Azimuth Angles (with respect to the space view position of each AMSU-A antenna; range: -180 to +180)
Word 1: Angle for A1-1 antenna
Word 2: Angle for A1-2 antenna
Word 3: Angle for A2 antenna		 2545 2550 i 2 3 2 degrees  
Lunar Elevation Angles (with respect to the space view position of each AMSU-A antenna; range: -90 to +90)
Word 1: Angle for A1-1 antenna
Word 2: Angle for A1-2 antenna
Word 3: Angle for A2 antenna		 2551 2556 i 2 3 2 degrees  
FILLER
<Zero Fill> 2557 2560 i 4 1 0    
NOTES:

1) An AMSU-A instrument on NOAA-N,-N' may produce a brief period of erroneous data during its transition between one mode and another. This transition period is defined as "NO" mode. Some "NO" mode events will occur during on-orbit validation (OV). After OV it is expected that the instrument will be kept in the normal scan mode, and thus will not get into "NO" mode.

2) For AMSU-A2, "RF Mux" is only applicable for NOAA KLM, while "RF Diplexer" is only applicable for NOAA-N,-N'.

3) The local osciallators (LOs) for the NOAA KLM AMSU-A instruments are Gunn Diode Oscillators (GDOs). The LOs for channels 1-8 of the NOAA-N,-N' AMSU-A instruments are Dielectric Resonant Oscillators (DROs). A GDO is still used for channel 15.

4) There are no conversion coefficients available for the last item, "Reference voltage", so none are specified in the header.

Amended January 13, 2005

Amended April 12, 2005

Amended May 4, 2005

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