DSS 14 Setup: RIV Signal NBOC Channel --- ------ ------------ 1 XRCP A 2 SRCP B 3 XLCP C 4 SLCP D Time Signal Elev AGC PPM SNT AGC BW CONSCAN ----- ------ ------ ------ ------ ----- ------ ------- 13:05 S 15.517 -141.7 -172.9 15.24 Narrow OFF X -142.3 0 0 Narrow 13:14 S -134.0 -172.9 15.24 X -142.3 0 0 13:20 S -163.6 -172.9 15.24 X 0 0 0 DSP Setup: Sample rate 50000 Mode 1 Quantization 8 bits Diplexer OUT Predict Set LF7 FRO 0 RIV Filter Offset -37500 Time Offset 0 13:24:04 DSP to RUN mode (on time) Channel Attenuators at 13:24:04 Attenuators at 13:28 ------- ----------------------- -------------------- 1 37 dB 37 dB 2 37 dB 37 dB 3 37 dB 43 dB 4 37 dB 37 dB 13:32 DSP status information was being interrupted. Operators reported that the open-loop equipment was "knocking other data out of the system." A DR was prepared. 13:32:40 DSP to IDLE at Sal Abbate's request. He suggested that the DSP be set to idle by command rather than relying on successful toggling of the tape drives. 13:39:40 Second tape started with the DSP in RUN mode 13:40:40 Signal visible in SSI data 13:46:25 Displays stopped again (DSP returned to IDLE?) 14:45 Call from Bill Adams. The spur may have "healed itself" -- it's not visible in the 10 MHz spectrum analyzer. Alternatively, it may have drifted outside the passband. S-band signal levels seem to be lower than expected. His phone: 303-977-5013 (FAX: -6389). Parameters transmitted to DSS 43 for use of the spectrum analyzer: Center Frequency 54.3 MHz Span 10 MHz Video Avg 50 Sweep 1 sec Video BW 3 kHz Vertical Resolution 2 dB BW Resolution 10 kHz One-volt rms levels to be used for attenuator settings 19:19 Confirmed by DSS 43: S RCP through diplexer S LCP listen-only mode X both polarizations listen-only MGN TRK confirms CONSCAN OFF 19:22:40 Tracking 19:28:30 SSI from DSS 43 visible at MGN TRK AGC PPM SNT ------ ------ ----- 19:30:20 S-band -142.8 -153.7 35.95 X-band -131.5 -153.7 37.09 19:32:42 S-band -135.5 -153.7 35.21 X-band -130.9 -153.7 31569.11(?) 19:33:30 SSI shows carrier at approximately 15 kHz (X-band AGC PPM SNT ------ ------ ----- 19:34:30 S-band -135.5 -153.7 34.85 X-band -131.1 -153.7 31569.11 19:36:20 S-band -135.4 -153.7 34.85 X-band -131.2 -153.7 31569.11 19:36:44 Channel 1 attenuator set to 38 dB (XRCP) 2 34 (SRCP) 3 34 (XLCP) 4 36 (SLCP) 19:37:45 Station confirms that spectrum taken from analyzer Carrier gone. AGC PPM SNT ------ ------ ----- 19:38:00 S-band -157.6 -153.7 33.46 X-band -153.7 0 (out of lock) Filter offset -37500 FRO 0 Time offset 0 Predict Set KI7 19:43:40 MGN TRK confirms DSP recording at 19:42:41 19:47:00 Pre-pass SNT values reported XR 20.4K XL 22.3K SR 25.1K SL 20.0K 19:47:30 Possible "bump" 3 kHz wide near 7 kHz in SSI 19:49:45 Tape drive 2 rewinding 19:50:50 Tape drive 1 rewinding 19:54:20 Tape drive 1 "ready" 19:58:48 Tape drive 2 rewinding 19:59:13 X-band carrier briefly visible in X-LCP 19:59:45 X-LCP at approximately 14.5 kHz in SSI 20:55 Tony says DSS 43 wants to change Tsys for S-RCP to 19.4K AGC PPM SNT ------ ------ ----- 21:05:00 S-band -142.7 -153.7 32.23 X-band -132.1 -153.7 1.00 X-band carrier visible at approximately 15 kHz in SSI; many spurs (modulation). Signal level about 34 dB above noise baseline. AGC PPM SNT ------ ------ ----- 21:07:20 S-band -135.2 -153.7 32.23 X-band -131.2 -153.7 1.00 AGC BW NAR Loop Mode WIDE Loop B/W 2 DSS 43 reports they are "taking the plot now" [to record the spur as seen on the spectrum analyzer] AGC PPM SNT ------ ------ ----- 21:09:15 S-band -135.3 -153.7 32.23 X-band -131.3 -153.7 1.00 21:10:55 SSI signal gone (were we watching the correct channel? Shouldn't have XLCP?) AGC PPM SNT ------ ------ ----- S-band -135.2 -153.3 32.23 X-band -131.3 -153.7 1.0 21:12:40 S-band 0 -153.7 32.23 X-band 0 -153.7 1.0 (out of lock) 21:17:30 Recording Drive 1 Setup: Ch A/D RIV Filter RIV Atten ------ ---------- --------- 1 6 38 dB 2 6 39 dB 3 6 34 dB 4 6 36 dB AGC PPM SNT Elevation CONSCAN ------ ------ ----- --------- ------- 21:19:34 S-band 0 -153.7 32.23 30.699 OFF X-band 0 -153.7 1.0 30.699 OFF 21:25:29 S-band 0 -153.7 32.23 X-band 0 -153.7 1.0 21:26:19 Recording: Drive 2 21:33:21 Record ends 21:33:55 Signal visible in SSI (briefly) about 14.5 kHz (2nd sidelobe) 21:34:20 More signal (1st sidelobe) AGC PPM SNT ------ ------ ----- 21:35:45 S-band -142.6 -153.7 32.23 X-band -131.3 -153.7 1.0 22:00 Post-pass SNT report: XRCP 19.7K XLCP 22.97K SRCP 19.1K SLCP 20.24K