|
NOAA KLM User's GuideSection 8.3.1.9.3.1 |
Introduction Page, NOAA KLM TOC,
AcronymsThe MHS Level 1b Record Format (Science Packet) is documented in Table 8.3.1.9.3.1-1. See Section 8.3.1.1 for further explanation of the headings on this table.
| Field Name | Start Octet |
End Octet |
Data Type |
Word Size |
Number of Words |
Scale Factor |
Units | Notes |
|---|---|---|---|---|---|---|---|---|
| SCAN LINE INFORMATION | ||||||||
| 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 | ||
| Scan Line Day of Year (e.g., 365) | 5 | 6 | u | 2 | 1 | 0 | ||
| 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; 1=southbound) 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 | ||
| Coarse MHS On-board Time (OBT) (time since last reset to zero) | 17 | 20 | u | 4 | 1 | 0 | seconds | |
| Fine MHS OBT (fraction of second since last increment of coarse MHS OBT. Resolution: 2-16 seconds; range: 0 - 65,535.) | 21 | 22 | u | 2 | 1 | 0 | ||
| MHS Mode Flag 0=power-on ("empty" MHS science data) 1=warm-up ("empty" MHS science data) 2=standby ("empty" MHS science data) 3=scan (valid MHS science data) 4=fixed view (valid MHS science data, but instrument is viewing a fixed location) 5=self test (test data) 6=safeing ("empty" MHS science data) 7=fault ("empty" MHS science data) 8-14=<undefined> (unknown data) 15=memory dump (memory dump data) |
23 | 23 | u | 1 | 1 | 0 | ||
| <Zero Fill> | 24 | 24 | i | 1 | 1 | 0 | ||
| QUALITY INDICATORS | ||||||||
| Quality Indicator Bit Field (if a bit is on (=1), 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 (gap may be due to actual lost scans or scans in which the TIP or MIU are in non-nominal modes) 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 - 5: <zero fill> bit 4: transmitter status change occurred (see note 2) 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 [Time Problem Code] (If a bit is on (=1),
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> |
29 | 29 | u | 1 | 1 | 0 | ||
| Scan Line Quality Flags [Calibration Problem Code] (If a bit is on
(=1), the statement is true. These bits complement the channel
indicators; all bits set to 0 indicates normal calibration.) Word 1 bits 7-2: <zero fill> bit 1: scan line contains one or more space views that are lunar contaminated bit 0: lunar-contaminated scan line was able to be calibrated (only applicable if the previous flag [bit 1] is 1; otherwise, zero) Word 2 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 was 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 OBCT view |
30 | 31 | u | 1 | 2 | 0 | ||
| Scan Line Quality Flags [Earth Location Problem Code] (If a bit is
on (=1), 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 H1 bits 15-7: <zero fill> bit 6: this scan line is either the last one before or the first one after a sudden, anomalous jump (or drop) in calibration counts bit 5: all bad OBCT 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 OBCT view counts for this line bit 1: marginal space view counts for this line bit 0: marginal PRT temps on this line Words 2-5: Channels H2-H5 (in order) |
33 | 42 | u | 2 | 5 | 0 | ||
| <Zero Fill> | 43 | 60 | i | 2 | 9 | 0 | ||
| CALIBRATION COEFFICIENTS Note: The following coefficients are only available in Scan and Fixed View modes, otherwise the coefficient fields are <Zero Fill>. Refer to bits 7-4 of the Mode and Sub-commutation Code field for the current mode. |
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| Primary Calibration Ch H1 Second Order Term, a2 | 61 | 64 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch H1 First Order Term, a1 | 65 | 68 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch H1 Zeroth Order Term, a0 | 69 | 72 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch H2 Second Order Term, a2 | 73 | 76 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch H2 First Order Term, a1 | 77 | 80 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch H2 Zeroth Order Term, a0 | 81 | 84 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch H3 Second Order Term, a2 | 85 | 88 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch H3 First Order Term, a1 | 89 | 92 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch H3 Zeroth Order Term, a0 | 93 | 96 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch H4 Second Order Term, a2 | 97 | 100 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch H4 First Order Term, a1 | 101 | 104 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch H4 Zeroth Order Term, a0 | 105 | 108 | i | 4 | 1 | 6 | ||
| Primary Calibration Ch H5 Second Order Term, a2 | 109 | 112 | i | 4 | 1 | 16 | ||
| Primary Calibration Ch H5 First Order Term, a1 | 113 | 116 | i | 4 | 1 | 10 | ||
| Primary Calibration Ch H5 Zeroth Order Term, a0 | 117 | 120 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch H1 Second Order Term, a2 | 121 | 124 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch H1 First Order Term, a1 | 125 | 128 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch H1 Zeroth Order Term, a0 | 129 | 132 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch H2 Second Order Term, a2 | 133 | 136 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch H2 First Order Term, a1 | 137 | 140 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch H2 Zeroth Order Term, a0 | 141 | 144 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch H3 Second Order Term, a2 | 145 | 148 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch H3 First Order Term, a1 | 149 | 152 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch H3 Zeroth Order Term, a0 | 153 | 156 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch H4 Second Order Term, a2 | 157 | 160 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch H4 First Order Term, a1 | 161 | 164 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch H4 Zeroth Order Term, a0 | 165 | 168 | i | 4 | 1 | 6 | ||
| Secondary Calibration Ch H5 Second Order Term, a2 | 169 | 172 | i | 4 | 1 | 16 | ||
| Secondary Calibration Ch H5 First Order Term, a1 | 173 | 176 | i | 4 | 1 | 10 | ||
| Secondary Calibration Ch H5 Zeroth Order Term, a0 | 177 | 180 | i | 4 | 1 | 6 | ||
| <Zero Fill> | 181 | 184 | i | 2 | 2 | 0 | ||
| NAVIGATION | ||||||||
| Computed Yaw Steering <zero fill> for NOAA |
185 | 190 | i | 2 | 3 | 0 | ||
| Total Applied Attitude Correction Word 1: Roll Word 2: Pitch Word 3: Yaw |
191 | 196 | 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=FALSE; 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) |
197 | 200 | u | 4 | 1 | 0 | ||
| Time Associated with Euler Angles | 201 | 204 | i | 4 | 1 | 0 | seconds | |
| Euler Angles Word 1: Roll Word 2: Pitch Word 3: Yaw |
205 | 210 | i | 2 | 3 | 3 | degrees | |
| Spacecraft Altitude above Reference Ellipsoid | 211 | 212 | u | 2 | 1 | 1 | kilometer | |
| Angular Relationships (relative azimuth range ± 180.00 degrees) 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 270: Relative azimuth angle, FOV 90 |
213 | 752 | i | 2 | 270 | 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 every FOV) ... Word 180: Longitude, FOV 90 |
753 | 1472 | i | 4 | 180 | 4 | degrees | |
| Lunar Angles (angles between moon and individual space views;
range 0 to 180.00 degrees) Word 1: Angle between moon and space view 1 Word 2: Angle between moon and space view 2 Word 3: Angle between moon and space view 3 Word 4: Angle between moon and space view 4 |
1473 | 1480 | u | 2 | 4 | 2 | degrees | |
| MHS SENSOR DATA (In fixed view mode, the pixel data is the same format as scan mode, but the concept of earth, space, and OBCT views does not apply. All 98 views (i.e., 90 earth + 4 space + 4 OBCT) are for the fixed view position.) |
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| Scene (Earth View) Data (range: 0 - 65,535) Word 1: Mid-pixel position for FOV 1 Word 2: Scene counts for FOV 1, channel H1 Word 3: Scene counts for FOV 1, channel H2 Word 4: Scene counts for FOV 1, channel H3 Word 5: Scene counts for FOV 1, channel H4 Word 6: Scene counts for FOV 1, channel H5 Word 7: Mid-pixel position for FOV 2 Words 8-12: Scene counts for FOV 2, channels H1-H5 (in order) ... (6 words for every FOV) ... Word 535: Mid-pixel position for FOV 90 Words 536-540: Scene counts for FOV 90, channels H1-H5 (in order) |
1481 | 2560 | u | 2 | 540 | 0 | counts | |
| <Zero Fill> | 2561 | 2568 | i | 4 | 2 | 0 | ||
| CALIBRATION DATA | ||||||||
| Space View Data (range: 0 - 65,535) Word 1: Mid-pixel position for space view 1 Word 2: Counts for space view 1, channel H1 Word 3: Counts for space view 1, channel H2 Word 4: Counts for space view 1, channel H3 Word 5: Counts for space view 1, channel H4 Word 6: Counts for space view 1, channel H5 Word 7: Mid-pixel position for space view 2 Word 8-12: Counts for space view 2, channel H1-H5 (in order) Word 13: Mid-pixel position for space view 3 Word 14-18: Counts for space view 3, channel H1-H5 (in order) Word 19: Mid-pixel position for space view 4 Word 20-24: Counts for space view 4, channel H1-H5 (in order) |
2569 | 2616 | u | 2 | 24 | 0 | counts | |
| OBCT View Data (range: 0 - 65,535) Word 1: Mid-pixel position for OBCT view 1 Word 2: Counts for OBCT view 1, channel H1 Word 3: Counts for OBCT view 1, channel H2 Word 4: Counts for OBCT view 1, channel H3 Word 5: Counts for OBCT view 1, channel H4 Word 6: Counts for OBCT view 1, channel H5 Word 7: Mid-pixel position for OBCT view 2 Word 8-12: Counts for OBCT view 2, channel H1-H5 (in order) Word 13: Mid-pixel position for OBCT view 3 Word 14-18: Counts for OBCT view 3, channel H1-H5 (in order) Word 19: Mid-pixel position for OBCT view 4 Word 20-24: Counts for OBCT view 4, channel H1-H5 (in order) |
2617 | 2664 | u | 2 | 24 | 0 | counts | |
| <Zero Fill> | 2665 | 2672 | i | 4 | 2 | 0 | ||
| POSITION VALIDITY FLAGS (There is one bit flag for each FOV (earth, space, and OBCT). If bit flag = 0, then mid-pixel antenna position for corresponding FOV is within its nominal range. Otherwise (if = 1), position is outside of its nominal range.) |
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| Earth View Position Validity Flags Word 1: position flags for FOVs 1-8 (bits 0-7) Word 2: position flags for FOVs 9-16 (bits 0-7) ... Word 11: position flags for FOVs 81-88 (bits 0-7) Word 12: position flags for FOVs 89-90 (bits 0-1; bits 2-7 are <zero fill>) |
2673 | 2684 | u | 1 | 12 | 0 | 2 | |
| Space View Position Validity Flags bits 7-4: <zero fill> bit 3: position flag for space view 4 bit 2: position flag for space view 3 bit 1: position flag for space view 2 bit 0: position flag for space view 1 |
2685 | 2685 | u | 1 | 1 | 0 | 2 | |
| OBCT View Position Validity Flags bits 7-4: <zero fill> bit 3: position flag for OBCT view 4 bit 2: position flag for OBCT view 3 bit 1: position flag for OBCT view 2 bit 0: position flag for OBCT view 1 |
2686 | 2686 | u | 1 | 1 | 0 | 2 | |
| FULL HOUSEKEEPING DATA | ||||||||
| Mode and Sub-commutation Code bits 7-4: mode code (0=power on; 1=warm up; 2=stand by; 3=scan; 4=fixed view; 5=self test; 6=safeing; 7=fault; 8-14=<unused>; 15=memory data packet ID) bit 3: PIE ID (0=PIE A; 1=PIE B) bits 2-0: sub-commutation code (only meaningful for telemetry packet data) |
2687 | 2687 | u | 1 | 1 | 0 | ||
| Telecommand Acknowledgement and Fault Code Words 1-2: bit 15: TC clean (1=no parity or checksum error found in received packet) bit 14: TC conforms (1=header of received command conforms to the CCSDS format) bit 13: TC recognized (1=received command is a recognized MHS command of the correct format) bit 12: TC legal (1=received command is legal for execution in the current MHS operating mode) bit 11: FDM motor current trip status (1=instantaneous current in the FDM motor has exceeded a pre-set level, resulting in the disabling of the FDM motor drive circuit) bits 10-0: TC application ID (taken from the packet ID field of the primary header of the received serial command) Words 3-4: bits 15-2: TC packet sequence count bits 1-0: TC received count Word 5: bit 7: current monitor fault (1=one or more PSU current monitor parameters exceed their expected limits); See note 3 bit 6: thermistor monitor fault (1=one or more thermistor temperature monitor parameters exceed their expected limits); See note 3 bit 5: switch fault (1=a switch status telemetry parameter does not agree with its last commanded state, or a PROM board switch error has occurred) bit 4: processor fault (1=a processor internal fault has occurred (overflow, illegal address, BIT failure)) bit 3: RDM motor current trip status (1=instantaneous current in the RDM motor has exceeded a pre-set level, resulting in the disabling of the RDM motor drive circuit) bit 2: DC offset error (1=one or more channel calibration target's readings indicate a change in the DC offset is required) bit 1: scan control error (1=the measured mid-pixel position of the reflector during earth, space, or OBCT views is outside the limits for the scan mode profile, or the reflector position is outside the limits of the requested position for fixed view mode, or the position acquisition initialization has failed); See note 4 bit 0: REF CK error (1=scan control clock stops as a result of the platform reference clock stopping for a period of >= 2.5 milliseconds) |
2688 | 2692 | u | 1 | 5 | 0 | 3,4 | |
| Switch Status Word 1: bit 7: receiver channel H4 backend (0=off; 1=on) bit 6: receiver channel H3 backend (0=off; 1=on) bit 5: receiver channel H3/H4 local oscillator selected (0=A; 1=B) bit 4: receiver channel H3/H4 front-end (0=off; 1=on) bit 3: receiver channel H2 local oscillator selected (0=A; 1=B) bit 2: receiver channel H2 (0=off; 1=on) bit 1: receiver channel H1 local oscillator selected (0=A; 1=B) bit 0: receiver channel H1 (0=off; 1=on) Word 2: bit 7: PROM (1=a PROM segment switch has failed ON) bit 6: signal processing electronics/scan control electronics (0=off; 1=on) bit 5: auxiliary operational heaters (0=off; 1=on) bit 4: scan mechanism operational heaters (0=off; 1=on) bit 3: receiver operational heaters (0=off; 1=on) bit 2: Rx CV (0=off; 1=on) bit 1: receiver channel H5 local oscillator selected (0=A; 1=B) bit 0: receiver channel H5 (0=off; 1=on) Word 3: bit 7: FDM motor current trip status (0=enabled; 1=disabled) bit 6: RDM motor current trip status (0=enabled; 1=disabled) bit 5: FDM motor supply (0=off; 1=on) bit 4: RDM motor supply (0=off; 1=on) bit 3: FDM motor sensors selected (0=A; 1=B) bit 2: RDM motor sensors selected (0=A; 1=B) bit 1: FDM zero position sensors (0=A; 1=B) bit 0: RDM zero position sensors (0=A; 1=B) |
2693 | 2695 | u | 1 | 3 | 0 | ||
| Temperature Data (range: 0-255) Word 1: LO H1 temperature Word 2: LO H2 temperature Word 3: LO H3/H4 temperature Word 4: LO H5 temperature Word 5: Mixer/LNA/Multiplexer H1 temperature Word 6: Mixer/LNA/Multiplexer H2 temperature Word 7: Mixer/LNA/Multiplexer H3/H4 temperature Word 8: Mixer/LNA/Multiplexer H5 temperature Word 9: Quasi-optics baseplate temperature #1 (dichroic D1(A) or polarisor(B)) Word 10: Quasi-optics baseplate temperature #2 (dichroic D2(A) or mirror(B)) Word 11: IF baseplate temperature #1 Word 12: IF baseplate temperature #2 Word 13: Scan mechanism core temperature Word 14: Scan mechanism housing temperature Word 15: RDM SSHM temperature Word 16: FDM SSHM temperature Word 17: Structure 1 temperature (-A edge, next to baseplate cutout) Word 18: Structure 2 temperature (-A edge, in-between Rx and SM) Word 19: Structure 3 temperature (-V edge, in-between EE and SM) Word 20: Processor module temperature Word 21: Main DC/DC converter module temperature Word 22: SCE RDM module temperature Word 23: SCE FDM module temperature Word 24: RF DC/DC converter module temperature |
2696 | 2719 | u | 1 | 24 | 0 | counts | |
| Raw Current Consumption Data (internal PSU current analog
telemetry; range: 0-255) Word 1: EE and SM +5V current Word 2: receiver +8V current Word 3: receiver +15V current Word 4: receiver -15V current Word 5: RDM motor current Word 6: FDM motor current |
2720 | 2725 | u | 1 | 6 | 0 | counts | |
| <Zero Fill> | 2726 | 2726 | i | 1 | 1 | 0 | ||
| STATUS WORD | ||||||||
| Status Word bit 7: DC offset valid (1=all channels' calibration target's readings lie within acceptable limits) bit 6: scan control valid: only set in scan mode or fixed view mode (1=all mid-pixel positions of the reflector during earth, space, or OBCT views are within limits) bits 5-4: profile (0=profile 0--the nominal scan mode profile with nominal space view position; 1=profile 1--alternate space view position; 2=profile 2--alternate space view position; 3=no profile calculated--profile will be manually loaded and modified) bits 3-0: <unused> |
2727 | 2727 | u | 1 | 1 | 0 | ||
| <Zero Fill> | 2728 | 2734 | i | 1 | 7 | 0 | ||
| SIGNAL PROCESSING STATUS | ||||||||
| DC Offset Words (range: 0-255) Word 1: Channel H1 DC offset word Word 2: Channel H2 DC offset word Word 3: Channel H3 DC offset word Word 4: Channel H4 DC offset word Word 5: Channel H5 DC offset word |
2735 | 2739 | u | 1 | 5 | 0 | counts | |
| Channel Valid Flags bit 7: H1 valid (1=all samples of channel H1 for this scan lie within the ADC dynamic range) bit 6: H2 valid (1=all samples of channel H2 for this scan lie within the ADC dynamic range) bit 5: H3 valid (1=all samples of channel H3 for this scan lie within the ADC dynamic range) bit 4: H4 valid (1=all samples of channel H4 for this scan lie within the ADC dynamic range) bit 3: H5 valid (1=all samples of channel H5 for this scan lie within the ADC dynamic range) bits 2-0: SPE MUX code (0=channel H1 connected to SPE 6; 1=H2 to SPE 6; 2=H3 to SPE 6; 3=SPE 6 not used; 4=H4 to SPE 6; 5=H5 to SPE 6; 6=SPE 6 not used; 7=SPE 6 not used) |
2740 | 2740 | u | 1 | 1 | 0 | ||
| Channel Gain (i.e., gain setting of the receiver video output
channels) Values of 0 to 3 imply 0 db gain to 3 dB gain, respectively. Values of 4 to 7 are not used. Word 1: bits 7-5: channel H1 gain bits 4-2: channel H2 gain bits 1-0: <unused> Word 2: bits 7-5: channel H3 gain bits 4-2: channel H4 gain bits 1-0: <unused> Word 3: bits 7-5: channel H5 gain bits 4-2: <unused> bits 1-0: <unused> |
2741 | 2743 | u | 1 | 3 | 0 | ||
| <Zero Fill> | 2744 | 2750 | i | 1 | 7 | 0 | ||
| OBCT TEMPERATURE DATA | ||||||||
| OBCT (PRT) Readings Word 1: PRT 1 Word 2: PRT 2 Word 3: PRT 3 Word 4: PRT 4 Word 5: PRT 5 |
2751 | 2760 | u | 2 | 5 | 0 | counts | |
| PRT Calibration Channels Word 1: Calibration channel 1 (upper value) Word 2: Calibration channel 2 (middle value) Word 3: Calibration channel 3 (lower value) |
2761 | 2766 | u | 2 | 3 | 0 | counts | |
| <Zero Fill> | 2767 | 2768 | i | 2 | 1 | 0 | ||
| Computed OBCT Temperatures Word 1: OBCT temperature 1 (based on PRT 1 reading) Word 2: OBCT temperature 2 (based on PRT 2 reading) Word 3: OBCT temperature 3 (based on PRT 3 reading) Word 4: OBCT temperature 4 (based on PRT 4 reading) Word 5: OBCT temperature 5 (based on PRT 5 reading) |
2769 | 2788 | u | 4 | 5 | 3 | K | |
| SPARES | ||||||||
| Science Packet Spare Words (set to zero) | 2789 | 2833 | u | 1 | 45 | 0 | ||
| <Zero Fill> | 2834 | 2834 | i | 1 | 1 | 0 | ||
| DISCRETE TELEMETRY Equivalent to digital B and analog housekeeping telemetry in other instruments. |
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| Main Bus Select Status (indicate which main bus (A or B) is used by
the MHS) 1 (0V)=A bus (relay closed) 0 (5V)=B bus (relay opened) |
2835 | 2835 | u | 1 | 1 | 0 | 1 | |
| MHS Survival Heater 1=on 0=off |
2836 | 2836 | u | 1 | 1 | 0 | 1 | |
| RF Converter Protect Disable 1=no 0=yes |
2837 | 2837 | u | 1 | 1 | 0 | 1 | |
| MHS Power A 1=on 0=off |
2838 | 2838 | u | 1 | 1 | 0 | 1 | |
| MHS Power B 1=on 0=off |
2839 | 2839 | u | 1 | 1 | 0 | 1 | |
| Main Converter Protect Disable 1=no 0=yes |
2840 | 2840 | u | 1 | 1 | 0 | 1 | |
| Survival Temperatures Word 1: Receiver temperature Word 2: Electronics equipment temperature Word 3: Scan mechanism temperature |
2841 | 2846 | u | 2 | 3 | 0 | counts | 1 |
| Transmitter Telemetry Word 1: STX-1 status Word 2: STX-2 status Word 3: STX-3 status Word 4: STX-4 status Word 5: STX-1 power Word 6: STX-2 power Word 7: STX-3 power Word 8: SARR-A power Word 9: SARR-B power |
2847 | 2864 | u | 2 | 9 | 0 | counts | 1 |
| Discrete Telemetry Update Flags (If bit = 0, associated telemetry
item is up-to-date. If bit = 1, associated telemetry item was not
updated during most recent telemetry cycle - possibly due to lost
frame.) bits 31-18: <zero fill> bit 17: SARR-B power bit 16: SARR-A power bit 15: STX-3 power bit 14: STX-2 power bit 13: STX-1 power bit 12: STX-4 status bit 11: STX-3 status bit 10: STX-2 status bit 9: STX-1 status bit 8: Scan mechanism temperature bit 7: Electronics equipment temperature bit 6: Receiver temperature bit 5: Main converter protect disable bit 4: MHS power B bit 3: MHS power A bit 2: RF converter protect disable bit 1: MHS survival heater bit 0: Main bus select status |
2865 | 2868 | u | 1 | 4 | 0 | 1 | |
| FILLER | ||||||||
| <Zero Fill> | 2869 | 3072 | i | 2 | 102 | 0 | NOTES: 1) The MHS Level 1b data will not contain any MIU related analog or digital B telemetry items from the NOAA data stream. These items will be archived in a separate NOAA telemetry file. 2) To determine the word location and bit location within the word of a particular FOV's validity flag, use the following equations: word = truncate((FOV - 1) / 8) + 1 bit = (FOV - 1) mod 8 For example, FOV 64's validity flag is located in bit 7 of word 8, computed as follows: word = truncate (64 - 1) / 8) + 1 = truncate (63 / 8) + 1 = truncate (7.875) + 1 = 7 + 1 = 8; bit = (64 - 1) mod 8 = 63 mod 8 = 7 3) The limits are defined in the Telemetry Limits Table, which is loaded into the instrument's memory. This table can be found in Appendix B of MHS TM-TC and Science Data Format Directory, and in Table 3.2.2.2.9-3 of MHS Instrument ICD. There are two levels of limits: "warning" limits and "fault" limits. If a telemetry item goes outside of the "warning" limits, then this bit is set. If the telemetry item goes outside of the "fault" limits, then an error flag is raised in the "fault code" field and the instrument switches to "fault" mode. 4) This bit is related to the Earth/Space/OBCT View Position Validity Flags. It is set by the instrument and comes in the data stream. The Position Validity Flags are set by the preprocessor. If this bit is set, then at least one bit of the Position Validity Flags should be set also. |
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