September 1999
1 September HED Calibration - 244.02:00 SCET.
Earth pointing manoeuvre (with power save) - 244.21:31 SCET.
244.22:21-22:31 10m realtime 1024bps data lost due to uplink frequency glitch
caused by procedural error at DSS42. This caused the ground
Rx to lose lock, but the s/c remained in 2-way mode. One TT
load command was aborted, but can be sent on DOY 99.245.
DR A03964 refers.
2 September
245.03:11-03:16 5m realtime 2048bps plus 38m playback 512bps data degraded by 45%
(244.13:48-14:26) due to heavy rain at DSS42. No DR was raised.
245.20:03-20:14 11m data gap caused by TGC problems at DSS42 during bitrate change
from 512 to 1024bps. DR A03966 refers.
3 September Routine operations.
4 September Earth pointing manoeuvre (with power save) - 247.21:30 SCET.
BAM-E Counting Interval: 64 to 60ms - 247.22:31 SCET.
247.06:04-06:19 15m data gap caused by TGC problems at DSS42 during bitrate change
from 1024 to 512bps. DR A03974 refers.
5 September
248.22:44-23:00 16m realtime 1024bps data lost at DSS34 due to problems with s/c
transition from 2-way to 1-way followed by bitrate change from
1024 to 4096bps. DR A03979 refers.
6 September KEP IFC - 249.21:01 SCET.
7 September Earth pointing manoeuvre (with power save) - 250.18:15 SCET.
SIM HET Calibration - 250.22:30 SCET.
250.04:41-04:50 10m data gap caused by TGC problems at DSS42 during bitrate change
from 1024 to 512bps. DR A03983 refers.
250.15:13-16:09 55m realtime 4096bps plus 5h26m playback 512bps data lost due to
(250.05:59-11:26) ASC (Antenna Sub-assembly Controller) failure at DSS14. Thanks go
out to DSS25 for coming up until DSS14 could return, thereby saving
approximately 30m realtime and 3h of playback data. DR G05280 refers.
250.16:37-16:42 9m realtime 4096bps data lost due to TGC problems during return of
250.16:45-16:50 data to DSS14. No DR was raised.
STO Instrument Power Test. This test is being carried out to
evaluate possible lower power modes of operation for the planned
Third Orbit. Details below:
250.19:49 SCET STO1A OFF, STO2A ON
250.20:24 SCET STO1A OFF, STO2A OFF
250.20:44 SCET STO1A ON , STO2A OFF
250.21:19 SCET STO1A ON , STO2A ON
250.22:01 SCET Begin STO instrument reconfiguration.
250.22:51 SCET End STO instrument reconfiguration.
250.22:53 SCET Routine STO Daily A command.
8 September Routine operations.
9 September KEP GAS CR#547: FSK upwind - 252.00:00 SCET.
252.04:19-04:29 10m data gap caused by TGC problems at DSS42 during bitrate change
from 2048 to 512bps. DR A03988 refers.
10 September Earth pointing manoeuvre (with power save) - 253.20:45 SCET.
11 September KEP GAS CR#548: MER 24 scan - 254.09:00 SCET.
12 September KEP GAS CR#549: FSK north - 255.11:00 SCET.
13 September HUS Datation Test at DSS43 - 256.00:05 ETT.
1st HUS burst on cmd - not transmitted due to station problems.
1st HUS burst off cmd - not transmitted due to station problems.
2nd HUS burst on cmd - ~256.01:45:38 SCET.
2nd HUS burst off cmd - ~256.01:50:42 SCET.
3rd HUS burst on cmd - ~256.02:35:39 SCET.
3rd HUS burst off cmd - ~256.02:40:41 SCET.
4th HUS burst on cmd - ~256.03:25:38 SCET.
4th HUS burst off cmd - ~256.03:30:41 SCET.
5th HUS burst on cmd - ~256.04:15:39 SCET.
5th HUS burst off cmd - ~256.04:20:43 SCET.
6th HUS burst on cmd - ~256.05:05:37 SCET.
6th HUS burst off cmd - ~256.05:10:40 SCET.
HUS Datation Test ends - 256.05:26 SCET.
256.06:14-06:23 9m realtime 1024bps data lost at DSS43 due to problems with s/c
transition from 2-way to 1-way followed by bitrate change from
1024 to 512bps. No DR was raised.
Earth pointing manoeuvre (with power save) - 256.20:30 SCET.
KEP IFC - 256.21:26 SCET.
14 September KEP GAS CR#550: FSK north II - 257.21:00 SCET.
15 September HED Calibration - 258.20:00 SCET.
16 September KEP GAS CR#551: FSK downwind I - 259.00:00 SCET.
DSU 1 ON - 259.02:46 SCET.
Earth pointing manoeuvre (with power save) - 259.20:31 SCET.
BAM-E calibration - 259.21:36 SCET.
BAM-I calibration - 259.21:46 SCET.
17 September GRU Routine Noise Test - 260.00:00 SCET.
18 September KEP GAS CR#552: FSK downwind II - 261.11:00 SCET.
19 September Earth pointing manoeuvre (with power save) - 262.20:00 SCET.
KEP GAS CR#553: FSK south I - 262.21:30 SCET.
20 September KEP IFC - 263.20:15 SCET.
21 September KEP RAM Dump - postponed to 99.271, as GAS scanning
campaign in progress.
22 September KEP GAS Monthly Health Check - cancelled as GAS scanning
campaign in progress.
KEP GAS CR#554: FSK south II - 265:00:00 SCET.
Earth pointing manoeuvre (with power save) - 265.20:01 SCET.
23 September KEP GAS CR#555: FSK crosswind - 266:02:00 SCET
24 September KEP GAS CR#556: GAS OFF - 267:23:00 SCET
25 September Earth pointing manoeuvre (with power save) - 268.20:01 SCET.
26 September Routine operations.
27 September KEP IFC - 270.20:05 SCET.
270.03:38-03:47 10m realtime 1024bps data lost at DSS43 due to long s/c transition
from 2-way to 1-way followed by bitrate change from 1024 to
512bps. No DR was raised.
270.18:25-18:38 13m bad/missing data due to long bitrate change from 512 to 1024bps
at DSS42. No DR was raised.
28 September KEP RAM Dump - 271.00:00 SCET.
Earth pointing manoeuvre (with power save) - 271.19:45 SCET.
29 September HED Calibration - 272.01:00 SCET.
30 September Routine operations.