PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2003-01-23 NOTE = "MGS RST Instrument Health Report HEA3023A.TXT" END_OBJECT = TEXT END Miscellaneous ============= Aseel Anabtawi forwarded the JPL news release (2003-008) below, describing bush fires which have threatened the DSCC 40 complex near Canberra. Aseel has also obtained a set of 13 digital photos, which can be distributed on request. The most dramatic shows an antenna against a background of fire and smoke; it is about 250 kB. The set is about 6 MB. Australian antennas of NASA's Deep Space Network used for communicating with spacecraft are back in normal operation after a close call with wildfires that destroyed hundreds of homes and took four lives in the Canberra area. Brush fires surrounded the network's Canberra complex on Saturday. Workers used hoses to dowse spot fires on the site Saturday and were still extinguishing flare-ups Monday. "A group of staff performed magnificently, successfully ensuring that no fires took hold at the site," said Peter Churchill, director of the Canberra antenna complex. "They also assisted the local fire service in their efforts to protect homes and farm infrastructure in the Tidbinbilla Valley." The Canberra dish antennas were inactive for about three and one-half hours Saturday so workers could concentrate on the fire. During that period, the complex had been scheduled to be in communication with five spacecraft on interplanetary missions or in Earth orbit, but none of the missed transmissions was critical or irreplaceable, said Joseph Wackley, Deep Space Network operations manager at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The network has antenna clusters in California, Spain and Australia so that the large radio dishes can be pointed toward spacecraft in any part of the solar system as the world turns. The antennas communicate with spacecraft as distant as Voyager 1, more than twice as far away as Pluto. Strong winds spread the fires across expanses of drought-parched vegetation. One entrance to the Canberra complex has been closed because of a burned-out bridge, Churchill said. An outlying support structure -- a tower, used in calibrations of the antennas -- was damaged by the fires. The site's visitor center is temporarily closed. The fire destroyed another important astronomical resource in the area, the Mount Stromlo observatory of Australian National University. The antenna site has its own backup electrical generators and water supply. The facility is sharing hot meals and water with area residents who have temporarily lost power and water to their homes. "We are expecting further adverse weather conditions during the week and continue to prepare ourselves for fire duties as required," Churchill said. JPL, a division of the California Institute of Technology in Pasadena, manages the Deep Space Network for NASA. The network's Canberra site is operated by British Aerospace, under contract to Australia's Commonwealth Scientific and Industrial Research Organisation. Engineering Data ================ Engineering Data Statistical Summary from CSV2STAT: First SCET: 2003-01-21T00:00:04.376 Last SCET: 2003-01-21T23:48:04.363 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 6424 12330 1.57E+00 3.01E+00 2.78E+00/9.95E-03 2434 F-0195 HGA_EL_ANG -11233 11089 -2.74E+00 2.71E+00 -4.62E-01/3.61E-02 2434 L-0034 MOT1_RANGING 0 0 4895 L-0036 MOT1_TLM_MOD 0 0 4892 L-0037 MOT1_USO_ENA 0 0 4895 L-0044 MOT2_RANGING 1 1 4895 L-0046 MOT2_TLM_MOD 0 1 4892 L-0047 MOT2_USO_ENA 1 1 4895 L-0053 RF_SW_OSC 2 2 4892 L-0060 TWTA1_FILMNT 0 0 4895 L-0061 TWTA1_HV 0 0 4878 L-0070 TWTA2_FILMNT 0 1 4878 L-0071 TWTA2_HV 0 1 4895 L-0080 USO_PWR 0 0 4895 L-0090 KaBLE_STAT 0 0 4895 L-0091 KaBLE_ENABLE 1 1 4878 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/7.15E-07 4895 L-0121 MOT2_RCV_AGC 152 255 -1.53E+02 -1.24E+02 -1.47E+02/1.37E-01 4895 L-0131 TWTA1_HLX_I 0 1 -3.84E-02 -1.85E-02 -3.82E-02/2.46E-05 4895 L-0132 TWTA1_ANOD_V 0 1 -1.00E+03 -1.00E+03 -1.00E+03/1.41E-02 610 L-0141 TWTA2_HLX_I 17 42 2.86E-01 7.85E-01 5.50E-01/2.96E-03 4895 L-0142 TWTA2_ANOD_V 62 229 -8.64E+02 -5.30E+02 -6.98E+02/6.60E+00 610 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.57E-04 607 L-0201 USO_OVEN_V 128 130 2.56E+00 2.60E+00 2.58E+00/1.88E-04 607 T-0302 EPC1_T 187 197 -4.65E+00 -3.25E-01 -2.29E+00/3.62E-02 612 T-0303 EPC2_T 182 192 -2.43E+00 1.71E+00 -5.42E-01/5.13E-02 612 T-0310 RF_ISOLTR1_T 229 233 -6.05E+00 -1.15E+00 -3.65E+00/9.37E-03 4892 T-0311 RF_ISOLTR2_T 224 232 -4.77E+00 4.11E+00 -1.40E-01/2.57E-02 4892 T-0312 TWT1_T 229 232 -4.77E+00 -1.15E+00 -2.68E+00/3.22E-02 613 T-0313 TWT2_T 218 233 -6.05E+00 9.37E+00 1.72E+00/1.78E-01 613 T-0315 USO_T 142 145 2.03E+01 2.12E+01 2.07E+01/8.66E-03 612 T-0316 KA_AMP_T 215 220 7.73E+00 1.16E+01 9.91E+00/2.65E-02 610 L-0200, L-0201, and T-0315 are nominal. Open Loop Data ============== Data Collection --------------- We have transferred the following RSR open loop data to Stanford: YYYY/DDD DSS RSR RSR CH KSPS BT REC RECS RSR MAX START STOP ID RS LEN FILE NAME SNR -------- --- -------- -------- --- -- ---- -- ----- ----- ------------ ----- 2003/022 63 05:30:00 05:40:00 3 1 2 16 8260 601 30220530.RSR 57.1 2003/022 63 07:27:00 07:37:00 3 1 2 16 8260 601 30220727.RSR 58.4 2003/022 65 07:27:00 07:37:00 4 1 2 16 8260 601 3022072H.RSR 51.1 2003/022 65 09:25:00 09:35:00 4 1 2 16 8260 601 30220925.RSR 50.1 2003/022 65 11:23:00 11:33:00 4 1 2 16 8260 601 30221123.RSR 50.0 2003/022 25 11:23:00 11:33:00 3 1 2 16 8260 601 3022112D.RSR 48.3 2003/022 25 13:21:00 13:30:00 3 1 2 16 8260 541 30221321.RSR 50.0 2003/022 25 15:18:00 15:28:00 3 1 2 16 8260 601 30221518.RSR 50.3 2003/022 25 17:16:00 17:26:00 3 1 2 16 8260 601 30221716.RSR 51.1 Anomalies --------- All three measurements collected by DSS 65 had free-space carrier levels and max SNR levels about 2 dB lower than expected with +/-0.3 dB random fluctuations in carrier amplitude (occultations 17315i through 17317i, with start times 2003/022-07:27:00 through 11:23:00). In addition to the lower than expected carrier level and random fluctuations, the last measurement initially had a -3 dB ramp in the carrier level over 2 minutes that ended about 3 minutes before ingress. This last measurement was also successfully captured by DSS 25. The first measurement collected at DSS 25 (occultation 17317i, start time 2003/022-11:23:00) also had free-space carrier levels about 2 dB lower than expected with +/-0.3 dB random fluctuations in the carrier amplitude. The other measurements from this pass were normal. The following occultations were captured at two different antennas: Occultation Start Date/Time DSS #1 DSS #2 ----------- ----------------- ------ ------ 17315i 2003/022-07:27:00 63 65 17317i 2003/022-11:23:00 65 25 Closed Loop Data ================ Data Collection --------------- We have obtained the following files from OSCAR: Original File Name Name on SOPC ------------------------------------ ------------ ODF: 03022O023_10S.SJO;1 3022023A.ODF Ancillary Data ============== Data Collection --------------- We have obtained the following files from the DOM: Original File Name Name on SOPC ------------------------------------ ------------ AMD: amdgen.03-023.out 3020022A.AMD DKF: mm248a.06.dkf 3026029D.DKF DKF: mm250a.01.dkf 3032036A.DKF OPT: optg_m_030113_OD17209-17300_rec_V1 3013021A.OPT OPT: optg_m_030123_OD17329-17332_17586_V1 3023044A.OPT SAK: mgs_solar_array_2003-021.ck 3021021A.SAK SOE: mm248a.06.tsoe 3026030D.SOE SOE: mm250a.01.tsoe 3032037A.SOE SPK: spk_m_030113_OD17209-17300_rec_V1 3013021A.SPK SPK: spk_m_030123_OD17329-17332_17586_V1 3023044A.SPK TCK: mgs_spice_c_kernel_2003-021.ck 3021021A.TCK We have obtained the following files from NAIF: Original File Name Name on SOPC ------------------------------------ ------------ AGK: mgs_hga_ck_2003-01-13.bc 3013013A.AGK