NOAA Office of Satellite and Product Operations

NOAA 17 CCS Subsystem Summary

Component Status:

Component
Description
Status
CIUControls Interface UnitGreen
CPC1Controls Power Converter 1 
CPC2Controls Power Converter 2 
CPU 1Central Processing Unit 1Green
CPU 2Central Processing Unit 2Green
CXUCIU AnnexGreen
DAU1Decription Authentication Unit -1 
DAU2Decription Authentication Unit -2 
GRD1GSTDN Receiver/demodulator #1 
GRD2GSTDN Receiver/demodulator #2 
RXO 1Primary Redundant Crystal OscillatorGreen
RXO 2Backup Redundant Crystal OscillatorGreen
SCUSignal conditional unitGreen

Subsystem History:

Date Time Component Description
04/10/201314:41:39 Configure spacecraft and ground to clear mode
04/10/201312:27:58 Deactivates NOAA-17
04/10/201310:40:24 Disable macro processing
02/25/201316:28:09 Load safety macros (0011-001F) for GYE test
02/14/201319:07:42 TIP Swap - Set JDAY on the s/c
02/14/201319:07:42 TIP02 Swap -Set JDAY on the s/c
02/12/201313:16:39 TIP01 Swap -Set JDAY on the s/c
01/10/201312:55:53 Clear Yaw Bias (M&L)
07/07/201019:30:42CPU 2Send 1-Word sent to NOAA-17 to verify that SADPOS is disabled.
01/12/200916:13:53 Switches S/C and ground system to key 2.
03/28/200619:08:00 TIP back to orbit mode with 1 sec bus voltage dwell
03/28/200619:07:00 Put GYRO 2 motor current into highspeed dwell for 60 sec
03/28/200619:06:00 TIP back to orbit mode with 1 sec bus voltage dwell
03/28/200619:05:00 Put GYRO 1 motor current into highspeed dwell for 60 sec
02/16/200619:24:00CPU 2Send 1 word
02/16/200619:22:00CPU 2Send 1 word
12/31/200523:35:00CPU 2Substract 1.5 second (1500 msecs) from spacecraft command clock CONTROL side to compensate for leap second on 1 Jan 06 and general drift throughout the year.
12/31/200522:35:00CPU 1Substract 1.5 second (1500 msecs) from spacecraft command clock NON-CONTROL side to compensate for leap second on 1 Jan 06 and general drift throughout the year.
09/27/200415:58:00 Changes CPU TLM table 1 (LASTSCRB replacing VGPC(3))
02/24/200423:30:00CPU 2Add 125 msec tospacecraft command clock CONTROL side.
02/24/200423:30:00CPU 1Add 125 msec to spacecraft command clock NON-control side.
02/08/200414:12:00CPU 2CPU-2 experienced hundreds of single event upset (errors) that required scrubbing over a 3 orbit period.
12/23/200323:31:00CPU 2Bias daily 24 hr. ETCUP to include -3 msec. control side.
12/23/200323:30:00CPU 2Subtract 100 msec from spacecraft command clock control side.
12/23/200322:30:00CPU 1Subtract 100 msec from spacecraft command clock NON-control side.
12/22/200318:30:00CPU 1CPU-1 experienced hundreds of single event upset (errors) that required scrubbing over a 3 orbit period.
10/23/200323:00:00CPU 2Subtract 50 msec from spacecraft command clock control side.
10/23/200321:12:00CPU 1Subtract 50 msec from spacecraft command clock NON-control side.
06/24/200218:56:00RXO 1On Orbit
06/24/200218:56:00SCUOn Orbit
06/24/200218:56:00CXUOn Orbit
06/24/200218:56:00CPU 2On Orbit
06/24/200218:56:00CPU 1On Orbit
06/24/200218:56:00CIUOn Orbit
06/24/200218:56:00RXO 2On Orbit