**POLAR Spacecraft Status As of: Thurs 29 May 2008, 16:00 EST**

(Changes from last week in bold border)

+----------+--------------+--------------+--------------+--------------+
| **Subs   | **NOAA-15K** | **NOAA-16L** | ##           | ##           |
| ystem/** |              |              | ### NOAA-17M | ### NOAA-18N |
|          | AM: 17:49=AN | PM: 15:04=AN |              |              |
| **Com    |              |              | AM: 22:23=AN | PM 13:49=AN  |
| ponent** | GAC data     | GAC data     |              |              |
|          | only         |              | GAC&LAC data | GAC & LAC    |
|          |              |              |              | data         |
+==========+==============+==============+==============+==============+
| **LA     | 05/13/98     | 09/21/00     | 6/24/02      | ####         |
| UNCHED** |              |              |              | ### 5/20/05  |
+----------+--------------+--------------+--------------+--------------+
| **CNTL   | OBP2         | OBP2         | OBP2         | OBP2         |
| OBP**    |              |              |              |              |
+----------+--------------+--------------+--------------+--------------+
| **BUS**  | B-BUS        | B-BUS        | B-BUS        | B-BUS        |
|          |              |              |              |              |
|          | XSU-1        | XSU-2:       | XSU-2: TOAR  | XSU-1        |
|          |              | TOAR472      | 471          |              |
|          |              |              |              |              |
|          |              |              | 1/15/08      |              |
+----------+--------------+--------------+--------------+--------------+
| **BUS    | NO           | NO           | NO           | NO           |
| VETO**   |              |              |              |              |
+----------+--------------+--------------+--------------+--------------+
| *        | [Nominal     | ######       | ###### [N    | [Nominal     |
| *ADACS** | Mode]        | [RGYRO Mode] | ominal Mode] | Mode]        |
|          | {.underline} | {.underline} | {.underline} | {.underline} |
|          |              |              |              |              |
|          | Rg           | Estimate     | Rg           | Gyro-A       |
|          | mode=Monitor | Y-ROLL       | mode=Monitor | MIMU-2       |
|          |              |              |              |              |
|          | Gyro-3 Off   | Rg           | Gyro-3 Off   | Z-wheel      |
|          | 6/26/00 Gyro | mode=PASSIVE | 6/10/04      | -Pitch       |
|          | chans=AAB    |              |              |              |
|          |              | Gyros-1 & 3  | Gyro         | TOAR 447     |
|          | N2 Low PSI   | Inop/Off     | chans=AAB    |              |
|          | invalid      |              | GAS Enabled  | Z-momentum   |
|          |              | Gyro chans   | Dec 05       | transition   |
|          |              | XA-ZB        |              | complete     |
|          |              |              |              |              |
|          |              | Pitch wheel  |              | Pitch        |
|          |              | bias 2400    |              | Torquer      |
|          |              |              |              | again active |
|          |              | Gyro2 safe   |              |              |
|          |              | macro        |              |              |
+----------+--------------+--------------+--------------+--------------+
| **RXO**  | PRI          | PRI          | PRI          | PRI          |
|          |              |              |              |              |
|          | daily bias   | Daily Bias   | Daily Bias   | No daily     |
|          | -8 mS        | --5.5 mS     | --3 mS       | bias         |
|          |              |              |              |              |
|          | -500 mS      | -1500 mS     | -1500 mS     | -1500 mS     |
|          | 12/31/05     | 31Dec05      | 31Dec05      | 31Dec05      |
+----------+--------------+--------------+--------------+--------------+
| **CLOCK  | 2            | 2            | 2            | 2            |
| DIV**    |              |              |              |              |
+----------+--------------+--------------+--------------+--------------+
| **MIRP** | External     | External     | External     | External     |
|          | Synch        | Sync         | Sync         | Synch        |
|          | Rephase 0730 |              |              |              |
|          | daily        | Rephase each | Rephase      | Rephase      |
|          |              | orbit        | Enabled      | Enabled      |
+----------+--------------+--------------+--------------+--------------+
| **TIP    | 2            | 2            | 2            | 1            |
| SIDE**   |              |              |              |              |
|          | (since       | since        | Swapped      | Analog telem |
|          | 4/3/03)      | 4/18/05      | 9/20/06      | drifting     |
|          |              |              |              |              |
|          | 3 channels   | (analog      |              |              |
|          | inop         | drifting?)   |              |              |
+----------+--------------+--------------+--------------+--------------+
| **Rec    | DTRs 1, 2,   | DTRs 1, 2,   | DTR 1,3,4 /  | SSRs         |
| orders** | 3, 4         | 3, 4A        | SSR 2        | 1,2,3,4,5    |
|          | Safestate 1B |              |              |              |
| **(DTR,  | EOT          | Safestate 3A | S            | Safestate=5B |
| SSR)**   |              |              | afestate=SSR |              |
|          |              | 4B STIP only | 2B           | Current      |
|          |              |              |              | spikes       |
|          |              |              | 4A Pressure  |              |
|          |              |              | leak         |              |
+----------+--------------+--------------+--------------+--------------+
| **VTX**  | #1 ON        | OFF / INOP   | #2 ON        | #1 ON        |
|          |              |              |              |              |
| (APT     | As of 19     | since        | 137.62 MHZ   | 137.1 MHZ    |
| data)    | June 07      | 11/15/00     |              |              |
|          |              |              |              | As of 16 Aug |
|          |              |              |              | 07           |
+----------+--------------+--------------+--------------+--------------+
| **BTX**  | #1           | #2           | ####### #2   | #1           |
|          |              |              |              |              |
|          | 137.35 MHZ   | 137.77 MHZ   | 137.77 MHZ   | 137.35 MHZ   |
+----------+--------------+--------------+--------------+--------------+
| **STX**  | 2-Omni HRPT  | 2 -- HRPT    | 1 -- HRPT    | 3 - HRPT     |
|          |              |              |              |              |
| 1 = rcp  | 2 Omni=rcp   | 1-- Playback | TOAR424 low  | 1 - Playback |
| 1698.0   |              |              | power        |              |
| mhz      | Power TOAR   | 4 Standby    |              | 2 - Playback |
|          | 446          |              | 2 & 4        |              |
| 2 = lcp  |              | 3 low power  | Playback     | 4-Test &     |
| 1702.5   | 4-Playback   | INOP -10 Aug |              | Standby      |
| mhz      |              | 2007         | STX-1 Power  |              |
|          | 1,           |              | drop 2.29W   |              |
| 3= rcp   | 2,3-Degraded |              | 3/2/08       |              |
| 1707.0   |              |              |              |              |
| mhz      |              |              | STX-4        |              |
|          |              |              | nominal      |              |
| 4= rcp   |              |              |              |              |
| 2247.5   |              |              | STX-3 Failed |              |
| mhz      |              |              | 2/14/08      |              |
+----------+--------------+--------------+--------------+--------------+
| #        | [Array Off   | [Array Off   | [Array Off.  | [Array Off.  |
| ## POWER | -45]         | -20]         | --40]        | -40]         |
|          | {.underline} | {.underline} | {.underline} | {.underline} |
| (Array   |              |              |              |              |
| offset   | [Since       | [Since       | [Since       | [Since       |
| and CANT | 1/25/01]     | 9/13/]{.     | 1/29/04]     | 6/6/05]      |
| angle,   | {.underline} | underline}07 | {.underline} | {.underline} |
| eclipse  |              |              |              |              |
| states   | Full Sun     | Eclipse all  | Eclipse all  | Eclipse all  |
| and sun  |              | year         | year         | year         |
| angle)   | Sun Angle 13 |              |              |              |
|          |              | Sun Angle 34 | Sun Angle at | Sun Angle 63 |
|          | Uptrend to   |              | 66           | uptrend to   |
|          | 18 early Jan | Steady trend |              | 65 on        |
|          | 07           |              | Steady trend |              |
|          |              | SA CANT=22   |              | 1 Jan 07     |
|          | SA CANT=37   | degs         | SA CANT=37   |              |
|          | degs         |              | degs         | SA CANT=22   |
|          |              | Full sun S/C |              |              |
|          |              | in Sept 07   | BVR Phase    | BVR Phase    |
|          |              |              | Control      | Control      |
|          |              | BVR Phase    | auton swap   | auton swap   |
|          |              | Control      | 9/17/07      | 3/29/06 &    |
|          |              | auton swap   |              | 1/4/07       |
|          |              | 7/19/07      | Swap back    |              |
|          |              |              | 9/18/07      |              |
|          |              |              |              |              |
|          |              |              | SADPOS       |              |
|          |              |              | Enabled      |              |
|          |              |              | 2/12/08      |              |
+----------+--------------+--------------+--------------+--------------+
| *        | Nominal      | Nominal      | ### Nominal  | Nominal      |
| *AVHRR** |              |              |              |              |
|          | Channel 3B   | Recent SM    | 3A-B switch  | Channel 3B   |
|          | only         | current      | enabled      | only         |
|          |              | increases    |              |              |
|          | Occasional   |              | Previous     | Scan motor   |
|          | minor scan   | TCE24 OFF    | scan motor   | current drop |
|          | motor        | 4/14/04      | current mini | 29 Aug 06    |
|          | i            |              | surges       |              |
|          | nstabilities | Channel 3B   |              |              |
|          |              | only         |              |              |
+----------+--------------+--------------+--------------+--------------+
| **A      | Operational  | Operational  | OFF/INOP     | Nominal      |
| MSU-A1** |              |              |              |              |
|          | Ch14         | Primary PLLO | Since        | Full Scan    |
|          | inoperative  | chans 9-14   | 10/30/03     | mode         |
|          |              | bias shift.  |              |              |
|          | Ch11         |              | Survival     |              |
|          | inoperative  | Backup PLLO  | heat on.     |              |
|          |              | inop.        |              |              |
|          |              |              |              |              |
|          |              | Channel 9-14 |              |              |
|          |              | noise        |              |              |
|          |              |              |              |              |
|          |              | Channel 4    |              |              |
|          |              | severely     |              |              |
|          |              | degraded 4   |              |              |
|          |              | Mar 08       |              |              |
+----------+--------------+--------------+--------------+--------------+
| **\`A    | Nominal      | Nominal      | Nominal      | Non-nominal  |
| MSU-A2** |              |              |              |              |
|          |              |              |              | DIG-A Temps  |
|          |              |              |              | erratic      |
|          |              |              |              | 2/7/08       |
|          |              |              |              |              |
|          |              |              |              | Cold Cal Pos |
|          |              |              |              | 2 2/21/08    |
+----------+--------------+--------------+--------------+--------------+
| **       | Operational  | Operational  | Nominal      | ***Replaced  |
| AMSU-B** |              |              |              | by MHS***    |
|          | Bias in All  | Space        |              |              |
|          | Chans.       | Position-3   |              |              |
|          |              |              |              |              |
|          | Degraded     | Chan-8       |              |              |
|          | Chan-3       | degradation  |              |              |
+----------+--------------+--------------+--------------+--------------+
| ### HIRS | NOMINAL      | NOMINAL      | NOMINAL      | ########     |
|          |              |              |              | Operational  |
|          | FW Abrupt    | New all time | 1 Pixel      |              |
|          | return to    | high filter  | cross-track  | Filter Heat  |
|          | nominal      | motor        | m            | OFF.         |
|          | 7/12/05      | current      | isalignment. |              |
|          |              | reached      |              | ########     |
|          | After years  | 9/17/06.     |              |  LW channel  |
|          | of minor and |              |              | 1-12 noise T |
|          | major        | Imagery      |              | OAR 448 Loos |
|          | current      | occasionally |              | e LWIR lens. |
|          | surges       | exhibits     |              |              |
|          |              | high levels  |              | LW imagery   |
|          | FW mode=Hi   | of           |              | erratic.     |
|          | Powr         | radiometric  |              |              |
|          |              | noise        |              | CH 1 Period  |
|          |              |              |              | Monitor      |
|          |              |              |              | event 13 May |
|          |              |              |              | 08           |
+----------+--------------+--------------+--------------+--------------+
| ###      |              |              |              | Nominal      |
|  MHS/MIU |              |              |              |              |
|          |              |              |              | Fly Wheel    |
|          |              |              |              | Motor        |
|          |              |              |              | Current      |
|          |              |              |              | Spiking but  |
|          |              |              |              | not alarming |
|          |              |              |              | since 27 Dec |
|          |              |              |              | 06           |
|          |              |              |              |              |
|          |              |              |              | Entered      |
|          |              |              |              | Motor Spin   |
|          |              |              |              | State on 9   |
|          |              |              |              | May 08       |
|          |              |              |              |              |
|          |              |              |              | H4 gain      |
|          |              |              |              | increased 9  |
|          |              |              |              | May 08       |
|          |              |              |              |              |
|          |              |              |              | H3 gain      |
|          |              |              |              | increased 9  |
|          |              |              |              | May 08       |
+----------+--------------+--------------+--------------+--------------+
| **DCS**  | Nominal      | Nominal      | Nominal      | Nominal      |
|          |              |              |              |              |
| RFI      |              | Pseudo       |              | DRU's 1-7 On |
| inves    |              | message      |              |              |
| tigation |              | turned on    |              | DRU8         |
|          |              | 1/5/06       |              | inop/off     |
+----------+--------------+--------------+--------------+--------------+
| **SARR** | Operational  | Operational  | Nominal      | Nominal      |
|          |              |              |              |              |
|          | B-Side, 13   | Mode =AA     | A-side       | A-Side       |
|          | Dec 07       |              |              |              |
|          |              | A-side, AGC  | All AGC Mode | All AGC Mode |
|          | AGC Mode     | Mode         |              |              |
|          |              |              |              | Since 15 Aug |
|          | Intermittent | (B-side in   |              | 05           |
|          | failures for | FG mode)     |              |              |
|          | 243MHz A&B   |              |              |              |
|          |              | 243 MHz =    |              |              |
|          |              | INOP.        |              |              |
+----------+--------------+--------------+--------------+--------------+
| **SARP** | Nominal      | Nominal      | Nominal      | Nominal      |
|          |              |              |              |              |
|          | RCVR B/W = 2 | RCVR B/W = 2 |              | A-side 23    |
|          |              |              |              | May05        |
+----------+--------------+--------------+--------------+--------------+
| **SEM**  | Nominal      | Nominal      | Nominal      | Nominal      |
|          |              |              |              |              |
|          | E            | E            | E            | El           |
|          | -CDEM-HVPS=2 | -CDEM-HVPS=7 | -CDEM-HVPS=2 | ec-CH-HVPS=1 |
|          |              |              |              |              |
|          | P            | P            | P            | 27 June 06   |
|          | -CDEM-HVPS=0 | -CDEM-HVPS=7 | -CDEM-HVPS=4 | 17:00z       |
|          |              |              |              |              |
|          |              | 11 Jan       | 27 June 06   | Pr           |
|          |              | 0714:47z     | 16:00z       | ot-CH-HVPS=1 |
|          |              |              |              |              |
|          |              |              |              | 11 Jan 07    |
|          |              |              |              | 14:15z       |
+----------+--------------+--------------+--------------+--------------+
| **SBUV** |              | Operational  | Nominal      | Nominal      |
|          |              |              |              |              |
|          |              | Degraded     | Anode Mode   | Anode mode   |
|          |              | Ozone data   |              |              |
|          |              |              | Plan sweep   | since 6 July |
|          |              | Backup       | mode         | 05 13:30z    |
|          |              | Diffuser     |              |              |
|          |              | inop         | Standard Ops | Electronics  |
|          |              |              |              | turnoff      |
|          |              | Primary      | TOAR 463 sun | taken out of |
|          |              | Diffuser     | glint        | STESM        |
|          |              | deployment   |              | safestate    |
|          |              | problem TOAR | IBSL test    | table        |
|          |              | 426          | performed 12 |              |
|          |              |              | Sept 06      | TOAR 462 sun |
|          |              | AMSU EMI     |              | glint        |
|          |              | causing      | Grating      |              |
|          |              | erratic      | motor        | Chop Motor   |
|          |              | Behavior in  | i            | stalled 22   |
|          |              | PMT cathod,  | nvestigation | May 08.      |
|          |              | range 3      |              | Currently    |
|          |              |              |              | all motors   |
|          |              |              |              | turned off   |
+----------+--------------+--------------+--------------+--------------+
| **       |              | ON           | ON           | ON           |
| SADPOS** |              |              |              |              |
|          |              | Enabled      | ENABLED      | Enabled      |
|          |              | MFactor50%   |              |              |
|          |              |              | Timer =      | Timer =12    |
|          |              | Timer = 12   | 12mins       | mins         |
|          |              | mins         |              |              |
+----------+--------------+--------------+--------------+--------------+
| **T      | TCE26 & 15H  | Nominal      | TCE3H Batt   | All TCE's    |
| HERMAL** |              |              | 2A heater    | active       |
|          | Telem valid  | TCE24 OFF    | failed ON,   |              |
| Heaters, |              | 4/14/05      | turned off   | HIRS filter  |
| louvers  | TOAR 432     |              | 8/26/03      | heater       |
|          | closed       | (AVHRR H&L)  |              | turned OFF   |
| TCE's    |              |              | AMSU-A1      | 9/28/06      |
|          | TCE24L&25L   | HIRS Filter  | survival     |              |
|          | (HIRS &      | heater       | heaters on   |              |
|          | AVHRR)       | turned OFF   | 10/29/03     |              |
|          | failed       | 1/18/05      |              |              |
|          | 5/13/98      |              |              |              |
|          |              |              |              |              |
|          | RCE          |              |              |              |
|          | thermostat   |              |              |              |
|          | failed       |              |              |              |
|          | 5/13/98      |              |              |              |
|          |              |              |              |              |
|          | Spacecraft   |              |              |              |
|          | in thermal   |              |              |              |
|          | uptrend      |              |              |              |
+----------+--------------+--------------+--------------+--------------+

**COMMENTS/CHANGES:**

MISC: Encryptor testing continues.

NOAA-15: There were relatively no changes to the NOAA-15 bus or payload
health situation during the past week.

NOAA-15 IMU status is unchanged. Daily monitoring continues.

A negative to positive pitch Z RWA seasonal transition is occurring. The
RWA will attain an average speed of around +700 RPM in about a week. .

NOAA-16: There was relatively no change in the performance of the
NOAA-16 bus & payload subsystems during the past week.

NOAA-17: There was relatively no change in the performance of the
NOAA-17 bus & payload subsystem during the past week.

NOAA-18: There were relatively no changes to the NOAA-18 health
situation during the past week.

The NOAA-18 SBUV Chopper Motor experienced an anomaly on 22 May 2008
(2008/143) at 15:57 UTC. The motor current began rising, reaching a
steady range of 186-192 mA after 4 hours - ten times the value it has
been throughout its life on orbit. Coupled to the current increase, the
motor temperature also began rising from its nominal value of
approximately 26 C to a plateau of 50 C. Anomaly investigation suggested
the motor was stalled. The decision was made to turn off the motor to
protect it from further overheating - commanding the motor off was on
2008/144 at 16:17:41 UTC. A recovery attempt was made on 27 May 2008
(2008/148) (from 17:03 to 18:48 UTC). The motor quickly returned to the
high current stall condition and was therefore was turned off again. No
further actions are planned. Further anomaly investigation is being
requested of the instrument vendor. Without the chopper motor
functioning, the instrument is not capable of generating science data.
The temperature rise of the SBUV did not cause increases on the rest of
the spacecraft. See Figure 3-9.

NOA-18's YH and RH limits for NDCS12V were adjusted for TIP Drift.

MetOp-A: There were relatively no changes to the health and safety of
the NOAA instruments on MetOp-A this past week.

 

[Trend Observations (NOAA Instruments) ]{.underline}

·         A review of the EUMETSAT analog housekeeping plots for this
week shows that all parameters are nominal.

·         Based on NASA's Digital A housekeeping and science trending
reports, all parameters are nominal and stable.  All performance
parameters are well within specification (e.g. NEdT, NEdN, NEdA and
SNR).  AMSU-A1's Channel 7 NEdT continues to increase, as mentioned in
previous trend reports.  The channel is still well within specification,
see Figure 10.

·         The HIRS Filter Wheel re-synch period during this reporting
period averaged between 94-95 seconds between resynchs.

NOTES: Figures 1-2 have been omitted for web listing.

 

![](media/image4.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 3 NOAA-18 SBUV (2008/143-149)

![](media/image5.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 4 NOAA-18 SBUV (2008/143-149)

![](media/image6.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 5 NOAA-18 SBUV (2008/143-149)

![](media/image7.jpeg){width="8.891666666666667in"
height="6.497222222222222in"}

Figure 6 NOAA-18 SBUV (2008/143-149)

![](media/image8.jpeg){width="8.891666666666667in"
height="6.497222222222222in"}

Figure 7 NOAA-18 SBUV (2008/143-149)

![](media/image9.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 8 NOAA-18 SBUV (2008/143-149)

![](media/image10.jpeg){width="8.891666666666667in"
height="6.378472222222222in"}

Figure 9 NOAA-18 SBUV (2008/143-149)

![](media/image11.jpeg){width="9.614583333333334in" height="5.84375in"}

Figure 10 MetOp-A

**POLAR Spacecraft Status As of: Thurs 29 May 2008, 16:00 EST**

(Changes from last week in bold border)

+----------+--------------+--------------+--------------+--------------+
| **Subs   | **NOAA-15K** | **NOAA-16L** | ##           | ##           |
| ystem/** |              |              | ### NOAA-17M | ### NOAA-18N |
|          | AM: 17:49=AN | PM: 15:04=AN |              |              |
| **Com    |              |              | AM: 22:23=AN | PM 13:49=AN  |
| ponent** | GAC data     | GAC data     |              |              |
|          | only         |              | GAC&LAC data | GAC & LAC    |
|          |              |              |              | data         |
+==========+==============+==============+==============+==============+
| **LA     | 05/13/98     | 09/21/00     | 6/24/02      | ####         |
| UNCHED** |              |              |              | ### 5/20/05  |
+----------+--------------+--------------+--------------+--------------+
| **CNTL   | OBP2         | OBP2         | OBP2         | OBP2         |
| OBP**    |              |              |              |              |
+----------+--------------+--------------+--------------+--------------+
| **BUS**  | B-BUS        | B-BUS        | B-BUS        | B-BUS        |
|          |              |              |              |              |
|          | XSU-1        | XSU-2:       | XSU-2: TOAR  | XSU-1        |
|          |              | TOAR472      | 471          |              |
|          |              |              |              |              |
|          |              |              | 1/15/08      |              |
+----------+--------------+--------------+--------------+--------------+
| **BUS    | NO           | NO           | NO           | NO           |
| VETO**   |              |              |              |              |
+----------+--------------+--------------+--------------+--------------+
| *        | [Nominal     | ######       | ###### [N    | [Nominal     |
| *ADACS** | Mode]        | [RGYRO Mode] | ominal Mode] | Mode]        |
|          | {.underline} | {.underline} | {.underline} | {.underline} |
|          |              |              |              |              |
|          | Rg           | Estimate     | Rg           | Gyro-A       |
|          | mode=Monitor | Y-ROLL       | mode=Monitor | MIMU-2       |
|          |              |              |              |              |
|          | Gyro-3 Off   | Rg           | Gyro-3 Off   | Z-wheel      |
|          | 6/26/00 Gyro | mode=PASSIVE | 6/10/04      | -Pitch       |
|          | chans=AAB    |              |              |              |
|          |              | Gyros-1 & 3  | Gyro         | TOAR 447     |
|          | N2 Low PSI   | Inop/Off     | chans=AAB    |              |
|          | invalid      |              | GAS Enabled  | Z-momentum   |
|          |              | Gyro chans   | Dec 05       | transition   |
|          |              | XA-ZB        |              | complete     |
|          |              |              |              |              |
|          |              | Pitch wheel  |              | Pitch        |
|          |              | bias 2400    |              | Torquer      |
|          |              |              |              | again active |
|          |              | Gyro2 safe   |              |              |
|          |              | macro        |              |              |
+----------+--------------+--------------+--------------+--------------+
| **RXO**  | PRI          | PRI          | PRI          | PRI          |
|          |              |              |              |              |
|          | daily bias   | Daily Bias   | Daily Bias   | No daily     |
|          | -8 mS        | --5.5 mS     | --3 mS       | bias         |
|          |              |              |              |              |
|          | -500 mS      | -1500 mS     | -1500 mS     | -1500 mS     |
|          | 12/31/05     | 31Dec05      | 31Dec05      | 31Dec05      |
+----------+--------------+--------------+--------------+--------------+
| **CLOCK  | 2            | 2            | 2            | 2            |
| DIV**    |              |              |              |              |
+----------+--------------+--------------+--------------+--------------+
| **MIRP** | External     | External     | External     | External     |
|          | Synch        | Sync         | Sync         | Synch        |
|          | Rephase 0730 |              |              |              |
|          | daily        | Rephase each | Rephase      | Rephase      |
|          |              | orbit        | Enabled      | Enabled      |
+----------+--------------+--------------+--------------+--------------+
| **TIP    | 2            | 2            | 2            | 1            |
| SIDE**   |              |              |              |              |
|          | (since       | since        | Swapped      | Analog telem |
|          | 4/3/03)      | 4/18/05      | 9/20/06      | drifting     |
|          |              |              |              |              |
|          | 3 channels   | (analog      |              |              |
|          | inop         | drifting?)   |              |              |
+----------+--------------+--------------+--------------+--------------+
| **Rec    | DTRs 1, 2,   | DTRs 1, 2,   | DTR 1,3,4 /  | SSRs         |
| orders** | 3, 4         | 3, 4A        | SSR 2        | 1,2,3,4,5    |
|          | Safestate 1B |              |              |              |
| **(DTR,  | EOT          | Safestate 3A | S            | Safestate=5B |
| SSR)**   |              |              | afestate=SSR |              |
|          |              | 4B STIP only | 2B           | Current      |
|          |              |              |              | spikes       |
|          |              |              | 4A Pressure  |              |
|          |              |              | leak         |              |
+----------+--------------+--------------+--------------+--------------+
| **VTX**  | #1 ON        | OFF / INOP   | #2 ON        | #1 ON        |
|          |              |              |              |              |
| (APT     | As of 19     | since        | 137.62 MHZ   | 137.1 MHZ    |
| data)    | June 07      | 11/15/00     |              |              |
|          |              |              |              | As of 16 Aug |
|          |              |              |              | 07           |
+----------+--------------+--------------+--------------+--------------+
| **BTX**  | #1           | #2           | ####### #2   | #1           |
|          |              |              |              |              |
|          | 137.35 MHZ   | 137.77 MHZ   | 137.77 MHZ   | 137.35 MHZ   |
+----------+--------------+--------------+--------------+--------------+
| **STX**  | 2-Omni HRPT  | 2 -- HRPT    | 1 -- HRPT    | 3 - HRPT     |
|          |              |              |              |              |
| 1 = rcp  | 2 Omni=rcp   | 1-- Playback | TOAR424 low  | 1 - Playback |
| 1698.0   |              |              | power        |              |
| mhz      | Power TOAR   | 4 Standby    |              | 2 - Playback |
|          | 446          |              | 2 & 4        |              |
| 2 = lcp  |              | 3 low power  | Playback     | 4-Test &     |
| 1702.5   | 4-Playback   | INOP -10 Aug |              | Standby      |
| mhz      |              | 2007         | STX-1 Power  |              |
|          | 1,           |              | drop 2.29W   |              |
| 3= rcp   | 2,3-Degraded |              | 3/2/08       |              |
| 1707.0   |              |              |              |              |
| mhz      |              |              | STX-4        |              |
|          |              |              | nominal      |              |
| 4= rcp   |              |              |              |              |
| 2247.5   |              |              | STX-3 Failed |              |
| mhz      |              |              | 2/14/08      |              |
+----------+--------------+--------------+--------------+--------------+
| #        | [Array Off   | [Array Off   | [Array Off.  | [Array Off.  |
| ## POWER | -45]         | -20]         | --40]        | -40]         |
|          | {.underline} | {.underline} | {.underline} | {.underline} |
| (Array   |              |              |              |              |
| offset   | [Since       | [Since       | [Since       | [Since       |
| and CANT | 1/25/01]     | 9/13/]{.     | 1/29/04]     | 6/6/05]      |
| angle,   | {.underline} | underline}07 | {.underline} | {.underline} |
| eclipse  |              |              |              |              |
| states   | Full Sun     | Eclipse all  | Eclipse all  | Eclipse all  |
| and sun  |              | year         | year         | year         |
| angle)   | Sun Angle 13 |              |              |              |
|          |              | Sun Angle 34 | Sun Angle at | Sun Angle 63 |
|          | Uptrend to   |              | 66           | uptrend to   |
|          | 18 early Jan | Steady trend |              | 65 on        |
|          | 07           |              | Steady trend |              |
|          |              | SA CANT=22   |              | 1 Jan 07     |
|          | SA CANT=37   | degs         | SA CANT=37   |              |
|          | degs         |              | degs         | SA CANT=22   |
|          |              | Full sun S/C |              |              |
|          |              | in Sept 07   | BVR Phase    | BVR Phase    |
|          |              |              | Control      | Control      |
|          |              | BVR Phase    | auton swap   | auton swap   |
|          |              | Control      | 9/17/07      | 3/29/06 &    |
|          |              | auton swap   |              | 1/4/07       |
|          |              | 7/19/07      | Swap back    |              |
|          |              |              | 9/18/07      |              |
|          |              |              |              |              |
|          |              |              | SADPOS       |              |
|          |              |              | Enabled      |              |
|          |              |              | 2/12/08      |              |
+----------+--------------+--------------+--------------+--------------+
| *        | Nominal      | Nominal      | ### Nominal  | Nominal      |
| *AVHRR** |              |              |              |              |
|          | Channel 3B   | Recent SM    | 3A-B switch  | Channel 3B   |
|          | only         | current      | enabled      | only         |
|          |              | increases    |              |              |
|          | Occasional   |              | Previous     | Scan motor   |
|          | minor scan   | TCE24 OFF    | scan motor   | current drop |
|          | motor        | 4/14/04      | current mini | 29 Aug 06    |
|          | i            |              | surges       |              |
|          | nstabilities | Channel 3B   |              |              |
|          |              | only         |              |              |
+----------+--------------+--------------+--------------+--------------+
| **A      | Operational  | Operational  | OFF/INOP     | Nominal      |
| MSU-A1** |              |              |              |              |
|          | Ch14         | Primary PLLO | Since        | Full Scan    |
|          | inoperative  | chans 9-14   | 10/30/03     | mode         |
|          |              | bias shift.  |              |              |
|          | Ch11         |              | Survival     |              |
|          | inoperative  | Backup PLLO  | heat on.     |              |
|          |              | inop.        |              |              |
|          |              |              |              |              |
|          |              | Channel 9-14 |              |              |
|          |              | noise        |              |              |
|          |              |              |              |              |
|          |              | Channel 4    |              |              |
|          |              | severely     |              |              |
|          |              | degraded 4   |              |              |
|          |              | Mar 08       |              |              |
+----------+--------------+--------------+--------------+--------------+
| **\`A    | Nominal      | Nominal      | Nominal      | Non-nominal  |
| MSU-A2** |              |              |              |              |
|          |              |              |              | DIG-A Temps  |
|          |              |              |              | erratic      |
|          |              |              |              | 2/7/08       |
|          |              |              |              |              |
|          |              |              |              | Cold Cal Pos |
|          |              |              |              | 2 2/21/08    |
+----------+--------------+--------------+--------------+--------------+
| **       | Operational  | Operational  | Nominal      | ***Replaced  |
| AMSU-B** |              |              |              | by MHS***    |
|          | Bias in All  | Space        |              |              |
|          | Chans.       | Position-3   |              |              |
|          |              |              |              |              |
|          | Degraded     | Chan-8       |              |              |
|          | Chan-3       | degradation  |              |              |
+----------+--------------+--------------+--------------+--------------+
| ### HIRS | NOMINAL      | NOMINAL      | NOMINAL      | ########     |
|          |              |              |              | Operational  |
|          | FW Abrupt    | New all time | 1 Pixel      |              |
|          | return to    | high filter  | cross-track  | Filter Heat  |
|          | nominal      | motor        | m            | OFF.         |
|          | 7/12/05      | current      | isalignment. |              |
|          |              | reached      |              | ########     |
|          | After years  | 9/17/06.     |              |  LW channel  |
|          | of minor and |              |              | 1-12 noise T |
|          | major        | Imagery      |              | OAR 448 Loos |
|          | current      | occasionally |              | e LWIR lens. |
|          | surges       | exhibits     |              |              |
|          |              | high levels  |              | LW imagery   |
|          | FW mode=Hi   | of           |              | erratic.     |
|          | Powr         | radiometric  |              |              |
|          |              | noise        |              | CH 1 Period  |
|          |              |              |              | Monitor      |
|          |              |              |              | event 13 May |
|          |              |              |              | 08           |
+----------+--------------+--------------+--------------+--------------+
| ###      |              |              |              | Nominal      |
|  MHS/MIU |              |              |              |              |
|          |              |              |              | Fly Wheel    |
|          |              |              |              | Motor        |
|          |              |              |              | Current      |
|          |              |              |              | Spiking but  |
|          |              |              |              | not alarming |
|          |              |              |              | since 27 Dec |
|          |              |              |              | 06           |
|          |              |              |              |              |
|          |              |              |              | Entered      |
|          |              |              |              | Motor Spin   |
|          |              |              |              | State on 9   |
|          |              |              |              | May 08       |
|          |              |              |              |              |
|          |              |              |              | H4 gain      |
|          |              |              |              | increased 9  |
|          |              |              |              | May 08       |
|          |              |              |              |              |
|          |              |              |              | H3 gain      |
|          |              |              |              | increased 9  |
|          |              |              |              | May 08       |
+----------+--------------+--------------+--------------+--------------+
| **DCS**  | Nominal      | Nominal      | Nominal      | Nominal      |
|          |              |              |              |              |
| RFI      |              | Pseudo       |              | DRU's 1-7 On |
| inves    |              | message      |              |              |
| tigation |              | turned on    |              | DRU8         |
|          |              | 1/5/06       |              | inop/off     |
+----------+--------------+--------------+--------------+--------------+
| **SARR** | Operational  | Operational  | Nominal      | Nominal      |
|          |              |              |              |              |
|          | B-Side, 13   | Mode =AA     | A-side       | A-Side       |
|          | Dec 07       |              |              |              |
|          |              | A-side, AGC  | All AGC Mode | All AGC Mode |
|          | AGC Mode     | Mode         |              |              |
|          |              |              |              | Since 15 Aug |
|          | Intermittent | (B-side in   |              | 05           |
|          | failures for | FG mode)     |              |              |
|          | 243MHz A&B   |              |              |              |
|          |              | 243 MHz =    |              |              |
|          |              | INOP.        |              |              |
+----------+--------------+--------------+--------------+--------------+
| **SARP** | Nominal      | Nominal      | Nominal      | Nominal      |
|          |              |              |              |              |
|          | RCVR B/W = 2 | RCVR B/W = 2 |              | A-side 23    |
|          |              |              |              | May05        |
+----------+--------------+--------------+--------------+--------------+
| **SEM**  | Nominal      | Nominal      | Nominal      | Nominal      |
|          |              |              |              |              |
|          | E            | E            | E            | El           |
|          | -CDEM-HVPS=2 | -CDEM-HVPS=7 | -CDEM-HVPS=2 | ec-CH-HVPS=1 |
|          |              |              |              |              |
|          | P            | P            | P            | 27 June 06   |
|          | -CDEM-HVPS=0 | -CDEM-HVPS=7 | -CDEM-HVPS=4 | 17:00z       |
|          |              |              |              |              |
|          |              | 11 Jan       | 27 June 06   | Pr           |
|          |              | 0714:47z     | 16:00z       | ot-CH-HVPS=1 |
|          |              |              |              |              |
|          |              |              |              | 11 Jan 07    |
|          |              |              |              | 14:15z       |
+----------+--------------+--------------+--------------+--------------+
| **SBUV** |              | Operational  | Nominal      | Nominal      |
|          |              |              |              |              |
|          |              | Degraded     | Anode Mode   | Anode mode   |
|          |              | Ozone data   |              |              |
|          |              |              | Plan sweep   | since 6 July |
|          |              | Backup       | mode         | 05 13:30z    |
|          |              | Diffuser     |              |              |
|          |              | inop         | Standard Ops | Electronics  |
|          |              |              |              | turnoff      |
|          |              | Primary      | TOAR 463 sun | taken out of |
|          |              | Diffuser     | glint        | STESM        |
|          |              | deployment   |              | safestate    |
|          |              | problem TOAR | IBSL test    | table        |
|          |              | 426          | performed 12 |              |
|          |              |              | Sept 06      | TOAR 462 sun |
|          |              | AMSU EMI     |              | glint        |
|          |              | causing      | Grating      |              |
|          |              | erratic      | motor        | Chop Motor   |
|          |              | Behavior in  | i            | stalled 22   |
|          |              | PMT cathod,  | nvestigation | May 08.      |
|          |              | range 3      |              | Currently    |
|          |              |              |              | all motors   |
|          |              |              |              | turned off   |
+----------+--------------+--------------+--------------+--------------+
| **       |              | ON           | ON           | ON           |
| SADPOS** |              |              |              |              |
|          |              | Enabled      | ENABLED      | Enabled      |
|          |              | MFactor50%   |              |              |
|          |              |              | Timer =      | Timer =12    |
|          |              | Timer = 12   | 12mins       | mins         |
|          |              | mins         |              |              |
+----------+--------------+--------------+--------------+--------------+
| **T      | TCE26 & 15H  | Nominal      | TCE3H Batt   | All TCE's    |
| HERMAL** |              |              | 2A heater    | active       |
|          | Telem valid  | TCE24 OFF    | failed ON,   |              |
| Heaters, |              | 4/14/05      | turned off   | HIRS filter  |
| louvers  | TOAR 432     |              | 8/26/03      | heater       |
|          | closed       | (AVHRR H&L)  |              | turned OFF   |
| TCE's    |              |              | AMSU-A1      | 9/28/06      |
|          | TCE24L&25L   | HIRS Filter  | survival     |              |
|          | (HIRS &      | heater       | heaters on   |              |
|          | AVHRR)       | turned OFF   | 10/29/03     |              |
|          | failed       | 1/18/05      |              |              |
|          | 5/13/98      |              |              |              |
|          |              |              |              |              |
|          | RCE          |              |              |              |
|          | thermostat   |              |              |              |
|          | failed       |              |              |              |
|          | 5/13/98      |              |              |              |
|          |              |              |              |              |
|          | Spacecraft   |              |              |              |
|          | in thermal   |              |              |              |
|          | uptrend      |              |              |              |
+----------+--------------+--------------+--------------+--------------+

**COMMENTS/CHANGES:**

MISC: Encryptor testing continues.

NOAA-15: There were relatively no changes to the NOAA-15 bus or payload
health situation during the past week.

NOAA-15 IMU status is unchanged. Daily monitoring continues.

A negative to positive pitch Z RWA seasonal transition is occurring. The
RWA will attain an average speed of around +700 RPM in about a week. .

NOAA-16: There was relatively no change in the performance of the
NOAA-16 bus & payload subsystems during the past week.

NOAA-17: There was relatively no change in the performance of the
NOAA-17 bus & payload subsystem during the past week.

NOAA-18: There were relatively no changes to the NOAA-18 health
situation during the past week.

The NOAA-18 SBUV Chopper Motor experienced an anomaly on 22 May 2008
(2008/143) at 15:57 UTC. The motor current began rising, reaching a
steady range of 186-192 mA after 4 hours - ten times the value it has
been throughout its life on orbit. Coupled to the current increase, the
motor temperature also began rising from its nominal value of
approximately 26 C to a plateau of 50 C. Anomaly investigation suggested
the motor was stalled. The decision was made to turn off the motor to
protect it from further overheating - commanding the motor off was on
2008/144 at 16:17:41 UTC. A recovery attempt was made on 27 May 2008
(2008/148) (from 17:03 to 18:48 UTC). The motor quickly returned to the
high current stall condition and was therefore was turned off again. No
further actions are planned. Further anomaly investigation is being
requested of the instrument vendor. Without the chopper motor
functioning, the instrument is not capable of generating science data.
The temperature rise of the SBUV did not cause increases on the rest of
the spacecraft. See Figure 3-9.

NOA-18's YH and RH limits for NDCS12V were adjusted for TIP Drift.

MetOp-A: There were relatively no changes to the health and safety of
the NOAA instruments on MetOp-A this past week.

 

[Trend Observations (NOAA Instruments) ]{.underline}

·         A review of the EUMETSAT analog housekeeping plots for this
week shows that all parameters are nominal.

·         Based on NASA's Digital A housekeeping and science trending
reports, all parameters are nominal and stable.  All performance
parameters are well within specification (e.g. NEdT, NEdN, NEdA and
SNR).  AMSU-A1's Channel 7 NEdT continues to increase, as mentioned in
previous trend reports.  The channel is still well within specification,
see Figure 10.

·         The HIRS Filter Wheel re-synch period during this reporting
period averaged between 94-95 seconds between resynchs.

NOTES: Figures 1-2 have been omitted for web listing.

 

![](media/image4.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 3 NOAA-18 SBUV (2008/143-149)

![](media/image5.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 4 NOAA-18 SBUV (2008/143-149)

![](media/image6.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 5 NOAA-18 SBUV (2008/143-149)

![](media/image7.jpeg){width="8.891666666666667in"
height="6.497222222222222in"}

Figure 6 NOAA-18 SBUV (2008/143-149)

![](media/image8.jpeg){width="8.891666666666667in"
height="6.497222222222222in"}

Figure 7 NOAA-18 SBUV (2008/143-149)

![](media/image9.jpeg){width="8.891666666666667in" height="6.625in"}

Figure 8 NOAA-18 SBUV (2008/143-149)

![](media/image10.jpeg){width="8.891666666666667in"
height="6.378472222222222in"}

Figure 9 NOAA-18 SBUV (2008/143-149)

![](media/image11.jpeg){width="9.614583333333334in" height="5.84375in"}

Figure 10 MetOp-A