June 1995
1 June GRU noise test - 152.04:00 SCET.
KEP EPAC detector 'C' off - 152.01:27 SCET.
*DSS 15 acquired with LCP, dropped uplink, DR J7317
- 152.08:15 ERT.
*DSS 15 transmitter controller switched off erroneously.
*Nutation reached 0.42 degrees.
*McElrath manoeuvre performed - 152.10:45 SCET.
*DSS 15 maser failure - 152.11:25 ETT.
Resumed nutation damping operations - 152.10:53 SCET.
2 June Nutation damping operations.
3 June Nutation damping operations.
4 June Nutation damping operations.
5 June KEP IFC - 156.02:02 SCET.
6 June Nutation damping operations.
STO RAR to HI SEP, HI POLAR OFF - 157.01:47 SCET.
STO RAR return hi receiver to SUM/POLAR - 157.21:47 SCET.
Manual bit rate change to 2K interleaved, for DSS 24 test -
157.16:17 SCET.
Return to 1K science - 157.23:19 SCET.
7 June Nutation damping operations.
158.10:58-11:18 20m bad/lost data due to interference from DSS 14
affecting DSS 15.
8 June Nutation damping operations.
159.10:00-10:30 30m data loss due to maser failure at DSS 12.
9 June Nutation damping operations.
10 June Nutation damping operations.
11 June Nutation damping operations.
12 June KEP IFC - 163.03:28 SCET.
GRU2 heater 1 (0.4W) switch on - 163.03:32 SCET.
13 June Nutation damping operations.
STO RAR to HI SEP, HI POLAR OFF - 164.02:57 SCET.
Thermal reconfiguration: EPD 10W.
Dump PT & BT
Deschedule REC - 164.19:50 SCET.
Deschedule WDQ
Arm watchdog
Reconfigure EPDs to 10W - 164.20:30 SCET.
Update PT & BT
Disarm watchdog
Schedule WDQ, REC - 164.21:49 SCET.
Dump TT
STO RAR return hi receiver to SUM/POLAR - 164.22:57 SCET.
14 June HED calibration - 165.00:00 SCET.
BAM-E counting interval from 12ms to 16ms - 165.00:32 SCET.
15 June Nutation damping operations.
166.12:30-13:45 1hr 15m of patchy data due to bungled uplink transfer
SCET DSS 15 to DSS 12; transfer attempted with wrong predicts.
Discrepancy Report: J7436.
166.20:25-20:32 7m data loss due to late transmitter switch on at DSS 15.
SCET Discrepancy Report: J7441.
16 June Nutation damping operations.
KEP heater switch on - 167.03:22 SCET.
167.02:57-03:57 Approx. 30m data loss due to procedural error: DSS 15 did
SCET. not unwrap cable during precalibration, cable had to be
partially unwrapped during track. Discrepancy Report: J7446.
17 June Nutation damping operations.
18 June Nutation damping operations.
19 June KEP IFC - 170.03:47 SCET.
20 June SIM HET calibration - 171.00:00 SCET.
KEP Det C on, T1 & T3 - 171 01:27 SCET.
KEP Det C on, T2 & T4 - 171.01:33 SCET.
KEP RAM Dump - 171.01:47 SCET.
STO RAR to HI SEP, HI POLAR OFF - 171.01:57 SCET.
STO RAR return hi receiver to SUM/POLAR - 171.21:57 SCET.
171.22:15-22:55 40m realtime data loss due to TCA problem, DSS 15. DR J7475.
21 June Nutation damping operations.
KEP CR #318: GAS NG-direct - 172.00:00 SCET.
172.21:40-22:03 20m realtime data loss from DSS 15 due to incorrect TSF
being referenced by Ops Chief. DR J7483.
22 June Nutation damping operations.
173.00:50-02:00 Total of 20m realtime data loss due to incorrect cable-wrap
configuration at DSS 15. DR J7484.
23 June Nutation damping operations.
24 June Nutation damping operations.
25 June Nutation damping operations.
KEP CR #319: GAS off - 176.12:00 SCET.
176.18:37-19:03 26m realtime data loss from DSS 15 due to TGC problems. Data
unrecoverable from station.
26 June KEP IFC - 177.03:49 SCET.
27 June STO RAR to HI SEP, HI POLAR OFF - 178.01:48 SCET.
STO RAR return hi receiver to SUM/POLAR - 178.21:48 SCET.
28 June Nutation damping operations.
HED calibration - 179.00:00 SCET.
29 June Nutation damping operations.
GRU Routine Noise Test - 180.04:00 SCET.
180.01:33-01:53 20m realtime data loss from DSS 15 due to TGC problems. Data
unrecoverable from station.
30 June Nutation damping operations.
181.13:00-15:30 Period of bad/patchy data due to TGC/GCF problems. Should be
fully recoverable.