PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2004-03-04 NOTE = "MGS RST Instrument Health Report HEA4064A.TXT" END_OBJECT = TEXT END Miscellaneous ============= Team Leader Len Tyler presented an update on the USO frequency change caused by solar activity to the MGS PSG in February. Aseel Anabtawi forwarded a request for a similar update from the NOPE office. This report includes the figure and explanatory material (see Figure Caption below). Engineering Data ================ Engineering Data Statistical Summary from CSV2STAT: First SCET: 2004-03-02T00:00:02.648 Last SCET: 2004-03-02T23:59:58.633 CHANNL CHANNEL TITLE DN-LO DN-HI EU-LO EU-HI EU-AVG/STDEV RECDS ------ ------------- ----- ----- --------- --------- ---------/-------- ----- F-0190 HGA_AZ_ANG 3896 4369 9.51E-01 1.07E+00 9.93E-01/9.70E-04 2696 F-0195 HGA_EL_ANG -11233 11089 -2.74E+00 2.71E+00 6.79E-01/3.53E-02 2696 L-0034 MOT1_RANGING 0 0 5400 L-0036 MOT1_TLM_MOD 0 0 5400 L-0037 MOT1_USO_ENA 0 0 5400 L-0044 MOT2_RANGING 1 1 5400 L-0046 MOT2_TLM_MOD 0 1 5400 L-0047 MOT2_USO_ENA 1 1 5400 L-0053 RF_SW_OSC 2 2 5400 L-0060 TWTA1_FILMNT 1 1 5400 L-0061 TWTA1_HV 1 1 5400 L-0070 TWTA2_FILMNT 1 1 5400 L-0071 TWTA2_HV 0 1 5400 L-0080 USO_PWR 0 0 5400 L-0090 KaBLE_STAT 0 0 5400 L-0091 KaBLE_ENABLE 1 1 5400 L-0111 MOT1_RCV_AGC 255 255 -1.53E+02 -1.53E+02 -1.53E+02/8.20E-07 5400 L-0121 MOT2_RCV_AGC 153 255 -1.53E+02 -1.24E+02 -1.49E+02/1.33E-01 5400 L-0131 TWTA1_HLX_I 0 0 -3.84E-02 -3.84E-02 -3.84E-02/0.00E+00 5400 L-0132 TWTA1_ANOD_V 231 240 -5.43E+02 -5.25E+02 -5.33E+02/1.52E-01 675 L-0141 TWTA2_HLX_I 17 43 2.86E-01 8.05E-01 6.05E-01/2.80E-03 5400 L-0142 TWTA2_ANOD_V 63 232 -8.62E+02 -5.24E+02 -7.33E+02/6.09E+00 675 L-0200 USO_REG_V 203 205 4.06E+00 4.10E+00 4.08E+00/2.51E-04 675 L-0201 USO_OVEN_V 129 131 2.58E+00 2.62E+00 2.60E+00/2.58E-04 675 T-0302 EPC1_T 161 194 -3.30E+00 1.01E+01 4.17E+00/1.61E-01 675 T-0303 EPC2_T 161 190 -1.58E+00 1.01E+01 4.76E+00/1.41E-01 675 T-0310 RF_ISOLTR1_T 220 232 -4.77E+00 7.73E+00 2.33E+00/4.90E-02 5400 T-0311 RF_ISOLTR2_T 210 233 -6.05E+00 1.50E+01 6.37E+00/8.43E-02 5400 T-0312 TWT1_T 218 231 -3.52E+00 9.37E+00 3.22E+00/1.31E-01 675 T-0313 TWT2_T 203 232 -4.77E+00 1.88E+01 9.14E+00/3.00E-01 675 T-0315 USO_T 138 141 2.14E+01 2.23E+01 2.20E+01/7.24E-03 675 T-0316 KA_AMP_T 207 219 8.56E+00 1.67E+01 1.31E+01/8.54E-02 675 L-0200, L-0201, and T-0315 are nominal. Open Loop Data ============== No new data. Closed Loop Data ================ Data Collection --------------- We have obtained the following files from OSCAR: Original File Name Name on SOPC ------------------------------------ ------------ ODF: 04062O063.DAT;1 4062063A.ODF ODF: 04063O064.DAT;1 4063064A.ODF Ancillary Data ============== Data Collection --------------- We have obtained the following files from the DOM: Original File Name Name on SOPC ------------------------------------ ------------ AMD: amdgen.04-063.out 4061062A.AMD DKF: mm338b.03.dkf 4063071G.DKF DKF: mm339a.01.dkf 4071078A.DKF SAK: mgs_solar_array_2004-062.ck 4062062A.SAK SOE: mm338b.03.tsoe 4063071F.SOE SOE: mm339a.01.tsoe 4071078A.SOE TCK: mgs_spice_c_kernel_2004-062.ck 4062062A.TCK We have obtained the following files from NAIF: Original File Name Name on SOPC ------------------------------------ ------------ AGK: mgs_hga_ck_2004-02-23.bc 4054054A.AGK Figure Caption ============== HEA4064A.PS1: X-band (8.4 GHz) equivalent frequency of the UltraStable oscillator on Mars Global Surveyor for approximately three months on either side of a solar flare anomaly. The change in frequency beginning on 2003-10-29 correlates with an unusually intense solar burst. Mars Odyssey 2001 went into safe mode at 0745 UTC on that date. It appears the MGS USO crystal may have been affected and that the oscillator settled in to a new reference frequency over the next approximately 5 days. As of late December the USO frequency was once again drifting at a small positive rate. The performance is stable and not a concern at this time. Analysis and interpretation by Joe Twicken at Stanford University for the MGS Radio Science Team. Figures ======= Plot(s) illustrate some of the points made in the text. Each plot is a PostScript file, created and printable on our SOPC. For report text file HEAydddC.TXT Figure N will be labeled HEAydddC.PSN and sent as the N+1st e-mail message of a set. We assume that you can strip off the e-mail headers and either display or print copies of the figures on a machine in your area. People who have indicated that they cannot handle these files by e-mail are not included in the e-mail distribution of figures.