NOAA Office of Satellite and Product Operations

NOAA 19 MHS Subsystem Summary

Component Description Status
CHANNEL H1 Channel H1 (89.0 GHz) Green
CHANNEL H2 Channel H2 (157.0 GHz) Green
CHANNEL H3 Channel H3 (183.3 GHz) Yellow
CHANNEL H4 Channel H4 (183.3 GHz) Green
CHANNEL H5 Channel H5 (190.3 GHz) Green
DC CONVTR DC/DC Converter Green
FDM Flywheel Driver Motor Green
FDM MTR SENSOR Flywheel Drive Motor Sensor Green
FDM ZPS Flywheel Driver Motor Zero Position Sensor Green
H1 LO H1 Local Oscillator Green
H2 LO H2 Local Oscillator Green
H3-H4 LO H3/H4 Local Oscillator Green
H5 LO H5 Local Oscillator Green
PIE Processor/Interface Electronics Green
RDM Reflector Drive Motor Green
RDM MTR SENSOR Reflector Drive Motor Sensor Green
RDM ZPS Reflector Drive Motor Zero Position Sensor Green
SCE Scan Control Electronics Green
SPE Signal Processing Electronics Green

Subsystem History:

Date Time Component Description
1/19/2015 18:24 CHANNEL H1 Automatic DC Offset occured; Correction of 1 count
12/09/2011 21:03:24 CHANNEL H4 MHS H4 Gain to 3 dB; MHS into Scan Mode
12/09/2011 21:01:20 CHANNEL H3 MHS H3 Gain to 2 dB
12/09/2011 20:59:02 FDM MHS to Standby Mode
12/09/2011 20:57:44   MHS to Warm Up Mode
12/09/2011 20:56:05   MHS SPE/SCE Turn On
12/09/2011 20:55:16   MHS to Power On Mode
12/09/2011 17:09:13 FDM MHS Tripped into Fault mode from a high current on the FDM.
12/21/2009 19:31:04   MHS DC Offset to Automatic Adjustment
12/21/2009 19:29:37   MHS to Standby, Channel H4 Gain to 3 dB, then to Scan Mode
12/21/2009 19:27:45   MHS to Standby, Channel H3 Gain to 2 dB, then to Scan Mode
12/21/2009 19:27:04   Transition to Warm Up Mode
12/21/2009 19:26:33   MHS SPE/SCE Power On
12/21/2009 19:25:51   Transition MHS to Power On Mode
12/19/2009 19:31:25   The MHS was recovered from the Fault Mode and is in Scan Mode
12/19/2009 14:25:16   While passing through the center of the SAA (14.3 South, 7.7 West at event time), the MHS entered Spin State. An above fault limit current was detected on the Flywheel Drive Motor and Reflector Drive Motor causing the MHS to transition to Fault Mode. Telemetry and science data indicate the N19 MHS behaved in a similar fashion to the MetOp-A MHS in its Spin State to Fault Mode events. EUMETSAT has already reviewed the data and given approval for recovery to Scan Mode efforts to begin.
10/07/2009 19:47:00 CHANNEL H4 Channel H4 degradation appears to have stopped. NEdT level stabilized around 0.61 K (back within 1.0 K specification).
10/07/2009 19:47:00 CHANNEL H3 Channel H3 degradation appears to have stopped. NEdT level stabilized around 3.0 K (exceeding 1.0 K specification).
10/07/2009 19:45:08 CHANNEL H4 H4 DCO Automatic Adjustment. DCO counts 117 changed to 110 (decimal).
10/07/2009 18:37:59 CHANNEL H3 H3 DCO Automatic Adjustment. DCO counts 56 changed to 41 (decimal).
10/03/2009 08:37:00 CHANNEL H4 H4 DCO Automatic Adjustment. DCO counts 124 changed to 117 (decimal).
10/01/2009 04:37:53 CHANNEL H3 H3 DCO Automatic Adjustment. DCO counts 71 changed to 56 (decimal).
10/01/2009 00:00:00 CHANNEL H3 The NOAA-19 MHS Channel H3 went out of spec around early October 2009. It has remained out of spec ever since.
09/28/2009 04:14:54 CHANNEL H4 H4 DCO Automatic Adjustment. DCO counts 132 changed to 124 (decimal).
09/23/2009 12:00:17 CHANNEL H3 H3 DCO Automatic Adjustment. DCO counts 85 changed to 71 (decimal).
09/19/2009 04:18:41 CHANNEL H4 H4 DCO Automatic Adjustment. DCO counts 141 changed to 132 (decimal).
09/16/2009 03:04:30 CHANNEL H3 H3 DCO Automatic Adjustment. DCO counts 99 changed to 85 (decimal).
09/14/2009 18:47:58 CHANNEL H4 H4 DCO Automatic Adjustment. DCO counts 150 changed to 141 (decimal).
09/13/2009 12:57:05 CHANNEL H3 H3 DCO Automatic Adjustment. DCO counts 112 changed to 99 (decimal).
09/02/2009 16:40:47 CHANNEL H4 H4 DCO Automatic Adjustment. DCO counts 161 changed to 150 (decimal).
09/02/2009 16:40:46   Enabled automatic DC offset correction
08/27/2009 00:00:00   Continued H3 and H4 degradation have rendered the MHS data unusable for various user products. The instrument is being classified "yellow" to denote this reduced product capability.
08/26/2009 16:09:21   Disable automatic DC offset correction
08/26/2009 11:14:42   Enable automatic DC offset correction
08/26/2009 11:13:58   Return channels H3/H4 to Local Oscillator B.
08/26/2009 11:13:58 H3-H4 LO Return channels H3/H4 to Local Oscillator B.
08/25/2009 16:19:00   Disable DC offset automatic adjustment.
08/25/2009 14:47:00   Enable DC offset automatic adjustment.
08/25/2009 14:46:00 CHANNEL H4 Command H4 gain to 3 db
08/25/2009 14:41:00 CHANNEL H3 Command H3 gain to 2 db
07/29/2009 12:37:23 H3-H4 LO Switched H3/H4 Local Oscillator from B Side to A Side.
07/25/2009 00:00:00 CHANNEL H3 HS Channel H3 NEdT began exceeding 1.0 K specification.
06/22/2009 00:00:00 CHANNEL H3 Notable increase detected in MHS Channel H3 NEdT and associated decrease in Gain.
06/22/2009 00:00:00 CHANNEL H4 Notable increase detected in MHS Channel H4 NEdT and associated decrease in Gain.
05/18/2009 13:06:17 CHANNEL H4 MHS Channel H4 DC Offset adjusted to 0x68. Shifted radiometric signal to the center of its range, away from the upper limit it was approaching.
04/24/2009 15:30:59   MHS DC Offset to Manual Adjustment
04/24/2009 13:56:42   MHS DC Offset to Automatic Adjustment
04/24/2009 13:54:43   MHS to Standby, Channel H4 Gain to 1 dB, then to Scan Mode
04/24/2009 13:53:28   Transition to Warm Up Mode
04/24/2009 13:52:33   MHS SPE/SCE Power On
04/24/2009 13:51:44   Transition MHS to Power On Mode
04/24/2009 02:24:30   While passing through the center of the SAA (14.5 South, 9.4 West at event time), the MHS entered Spin State. 19 seconds late, an above fault limit current was detected on the Flywheel Drive Motor causing the MHS to transition to Fault Mode.
02/12/2009 12:39:00 FDM ZPS MHS Scan Mode
02/12/2009 12:39:00 CHANNEL H2 MHS Scan Mode
02/12/2009 12:39:00 CHANNEL H1 MHS Scan Mode
02/12/2009 12:39:00 CHANNEL H3 MHS Scan Mode
02/12/2009 12:39:00 CHANNEL H4 MHS Scan Mode
02/12/2009 12:39:00 CHANNEL H5 MHS Scan Mode
02/12/2009 12:39:00 DC CONVTR MHS Scan Mode
02/12/2009 12:39:00 FDM MHS Scan Mode
02/12/2009 12:39:00 FDM MTR SENSOR MHS Scan Mode
02/12/2009 12:39:00 H1 LO MHS Scan Mode
02/12/2009 12:39:00 H2 LO MHS Scan Mode
02/12/2009 12:39:00 H3-H4 LO MHS Scan Mode
02/12/2009 12:39:00 H5 LO MHS Scan Mode
02/12/2009 12:39:00 RDM MHS Scan Mode
02/12/2009 12:39:00 RDM MTR SENSOR MHS Scan Mode
02/12/2009 12:39:00 RDM ZPS MHS Scan Mode
02/12/2009 12:39:00 SPE MHS Scan Mode
02/12/2009 12:39:00 SCE MHS Scan Mode
02/11/2009 14:27:00 PIE MHS Powered ON PIE-A