PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2007-07-31 NOTE = " E-mail and other messages concerning MGS Radio Science on or about 2003/289." END_OBJECT = TEXT END From aseel@airmail.fltops.jpl.nasa.gov Fri Oct 17 03:53:26 2003 Received: from airmail1.fltops.jpl.nasa.gov (airmail2.fltops.jpl.nasa.gov [137.228.96.27]) by magellan.stanford.edu (8.11.6/8.11.6) with ESMTP id h9GJ26x25496; Thu, 16 Oct 2003 12:02:06 -0700 (PDT) Received: from rsops2.fltops.jpl.nasa.gov (rsops2.fltops.jpl.nasa.gov [137.228.136.22]) by airmail1.fltops.jpl.nasa.gov (Postfix) with ESMTP id 30A1910931; Thu, 16 Oct 2003 12:02:02 -0700 (PDT) Received: (from aseel@localhost) by rsops2.fltops.jpl.nasa.gov (8.11.6+Sun/8.11.6) id h9GJ21m15681; Thu, 16 Oct 2003 19:02:01 GMT Date: Thu, 16 Oct 2003 19:02:01 GMT From: aseel anabtawi Message-Id: <200310161902.h9GJ21m15681@rsops2.fltops.jpl.nasa.gov> To: aseel.anabtawi@jpl.nasa.gov, chinsan@magellan.stanford.edu, data@magellan.stanford.edu, joe@neptune.stanford.edu, kusza@magellan.stanford.edu, rsimpson@magellan.stanford.edu Content-Length: 1824 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20575 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-18:04:00 End Record: 2003/288-18:19:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20576 Occultation Sense: e SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-18:33:00 End Record: 2003/288-18:47:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20576 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-20:02:00 End Record: 2003/288-20:16:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20577 Occultation Sense: e SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-20:30:00 End Record: 2003/288-20:45:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20577 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-22:00:00 End Record: 2003/288-22:14:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20578 Occultation Sense: e SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-22:28:00 End Record: 2003/288-22:43:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20578 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-23:57:00 End Record: 2003/289-00:13:00 DSS: 63 RSR: RSR2A Subchannel: 1 Orbit Number: 20579 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-00:26:00 End Record: 2003/289-00:41:00 -------------------------------------------------------------------------- From aseel@airmail.fltops.jpl.nasa.gov Fri Oct 17 03:59:31 2003 Received: from airmail1.fltops.jpl.nasa.gov (airmail2.fltops.jpl.nasa.gov [137.228.96.27]) by magellan.stanford.edu (8.11.6/8.11.6) with ESMTP id h9GJ46x25771; Thu, 16 Oct 2003 12:04:06 -0700 (PDT) Received: from rsops2.fltops.jpl.nasa.gov (rsops2.fltops.jpl.nasa.gov [137.228.136.22]) by airmail1.fltops.jpl.nasa.gov (Postfix) with ESMTP id 251041090C; Thu, 16 Oct 2003 12:04:02 -0700 (PDT) Received: (from aseel@localhost) by rsops2.fltops.jpl.nasa.gov (8.11.6+Sun/8.11.6) id h9GJ41n15839; Thu, 16 Oct 2003 19:04:01 GMT Date: Thu, 16 Oct 2003 19:04:01 GMT From: aseel anabtawi Message-Id: <200310161904.h9GJ41n15839@rsops2.fltops.jpl.nasa.gov> To: aseel.anabtawi@jpl.nasa.gov, chinsan@magellan.stanford.edu, data@magellan.stanford.edu, joe@neptune.stanford.edu, kusza@magellan.stanford.edu, rsimpson@magellan.stanford.edu Content-Length: 2280 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20578 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-23:57:00 End Record: 2003/289-00:13:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20579 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-00:26:00 End Record: 2003/289-00:41:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20579 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-01:56:00 End Record: 2003/289-02:10:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20580 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-02:24:00 End Record: 2003/289-02:39:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20580 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-03:54:00 End Record: 2003/289-04:08:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20581 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-04:22:00 End Record: 2003/289-04:37:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20581 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-05:51:00 End Record: 2003/289-06:06:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20582 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-06:20:00 End Record: 2003/289-06:34:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20582 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-07:49:00 End Record: 2003/289-08:04:00 DSS: 14 RSR: RSR2A Subchannel: 1 Orbit Number: 20583 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-08:17:00 End Record: 2003/289-08:32:00 -------------------------------------------------------------------------- From aseel@airmail.fltops.jpl.nasa.gov Fri Oct 17 04:01:20 2003 Received: from airmail1.fltops.jpl.nasa.gov (airmail2.fltops.jpl.nasa.gov [137.228.96.27]) by magellan.stanford.edu (8.11.6/8.11.6) with ESMTP id h9GJ65x26110; Thu, 16 Oct 2003 12:06:05 -0700 (PDT) Received: from rsops2.fltops.jpl.nasa.gov (rsops2.fltops.jpl.nasa.gov [137.228.136.22]) by airmail1.fltops.jpl.nasa.gov (Postfix) with ESMTP id 5220C1090C; Thu, 16 Oct 2003 12:06:01 -0700 (PDT) Received: (from aseel@localhost) by rsops2.fltops.jpl.nasa.gov (8.11.6+Sun/8.11.6) id h9GJ61n15921; Thu, 16 Oct 2003 19:06:01 GMT Date: Thu, 16 Oct 2003 19:06:01 GMT From: aseel anabtawi Message-Id: <200310161906.h9GJ61n15921@rsops2.fltops.jpl.nasa.gov> To: aseel.anabtawi@jpl.nasa.gov, chinsan@magellan.stanford.edu, data@magellan.stanford.edu, joe@neptune.stanford.edu, kusza@magellan.stanford.edu, rsimpson@magellan.stanford.edu Content-Length: 1368 DSS: 43 RSR: RSR1A Subchannel: 1 Orbit Number: 20584 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-11:44:00 End Record: 2003/289-11:59:00 DSS: 43 RSR: RSR1A Subchannel: 1 Orbit Number: 20585 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-12:13:00 End Record: 2003/289-12:27:00 DSS: 43 RSR: RSR1A Subchannel: 1 Orbit Number: 20585 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-13:42:00 End Record: 2003/289-13:57:00 DSS: 43 RSR: RSR1A Subchannel: 1 Orbit Number: 20586 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-14:10:00 End Record: 2003/289-14:25:00 DSS: 43 RSR: RSR1A Subchannel: 1 Orbit Number: 20586 Occultation Sense: i SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-15:40:00 End Record: 2003/289-15:54:00 DSS: 43 RSR: RSR1A Subchannel: 1 Orbit Number: 20587 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-16:08:00 End Record: 2003/289-16:23:00 -------------------------------------------------------------------------- From aseel@airmail.fltops.jpl.nasa.gov Fri Oct 17 04:04:40 2003 Date: Thu, 16 Oct 2003 19:03:01 GMT From: aseel anabtawi To: aseel.anabtawi@jpl.nasa.gov, chinsan@magellan.stanford.edu, data@magellan.stanford.edu, joe@neptune.stanford.edu, kusza@magellan.stanford.edu, rsimpson@magellan.stanford.edu DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20575 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-18:04:00 End Record: 2003/288-18:19:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20576 Occultation Sense: e SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-18:33:00 End Record: 2003/288-18:47:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20576 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-20:02:00 End Record: 2003/288-20:16:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20577 Occultation Sense: e SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-20:30:00 End Record: 2003/288-20:45:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20577 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-22:00:00 End Record: 2003/288-22:14:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20578 Occultation Sense: e SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-22:28:00 End Record: 2003/288-22:43:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20578 Occultation Sense: i SOE: mm317a.07.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/288-23:57:00 End Record: 2003/289-00:13:00 DSS: 63 RSR: RSR1A Subchannel: 1 Orbit Number: 20579 Occultation Sense: e SOE: mm318a.05.tsoe Ground Mode: 1 Uplink Station: -- Sampling Rate: 2K Bit Resolution: 16 Begin Record: 2003/289-00:26:00 End Record: 2003/289-00:41:00 -------------------------------------------------------------------------- From aseel@godzilla.jpl.nasa.gov Mon Oct 20 16:45:46 2003 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.78.95]) by magellan.stanford.edu (8.11.6/8.11.6) with ESMTP id h9KNjkx18790; Mon, 20 Oct 2003 16:45:46 -0700 (PDT) Received: from aseel (aseel.jpl.nasa.gov [137.78.78.43]) by godzilla.jpl.nasa.gov (8.9.3p2.cm/8.9.3) with SMTP id QAA12000; Mon, 20 Oct 2003 16:45:41 -0700 (PDT) Message-ID: <001601c39764$276881b0$2b4e4e89@jpl.nasa.gov> Reply-To: "Aseel Anabtawi" From: "Aseel Anabtawi" To: "Dick Simpson 723-3525" , , "Kerri Kusza 3-3669" , References: <200310180014.h9I0EE200241@magellan.stanford.edu> Subject: Re: MGS RST Rpt HEA3290A.TXT Date: Mon, 20 Oct 2003 16:44:50 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Content-Length: 3249 Status: RO > The last measurement from DSS 63 on day 289 had no signal. This > measurement was made before the scheduled end of tracking, and the cause for > the missing signal is currently unknown (occultation number 20579e, start time > 2003/289-00:26:00). Overlapping data collected at DSS 14 (see next paragraph) > also have no signal. > > Eight out of ten measurements from DSS 14 on day 288/289 had no signal > (occultation numbers 20579e-20582i, start times 2003/289-00:26:00 through > 07:49:00). The first and last measurement had normal signal levels, however. > The cause for measurements with missing signal is currently unknown. According to Pauline Hwang, this was due to a sequence transition error. Some commands got missed in the sequence transition (including TWNC), and did not get into the sequence, so there was no signal from the s/c during the first few orbits of the new sequence. She pointed out that there was an email from Steve Odiorne about this, but the subject was "MGS Lost Playbacks," so I missed it. Here it is: ----- Original Message ----- From: "Odiorne, Stephen C" Sent: Thursday, October 16, 2003 6:19 AM Subject: MGS Lost Playbacks on DOY 189 > At 2003-289/00:29:17 ERT UTC, the DSN could not acquire MGS downlink as it emerged from Earth Occultation. Communications was lost with MGS for the first 4 orbits of MM318a. This means that we lost the DOY 188 playback data from SSR1A and SSR1B, Partitions 1 & 2. SSR1A & SSR1B, Partition 3 data was played back nominally and the rest of the sequence is operating nominally. My hypothesis is that the first command in MM318A, the SWEISE (AEM Ingress Script Enable), did not get issued because it occurred BEFORE the sequence boundary. SWEISE should have been issued at 2003-288/23:48:49.6; the sequence boundary occurred at 2003-288/23:57:00. Why this would be the case when all our review products say the command should have been issued, I do not know. I suppose its also possible that the complete set of commands associated with the first four playbacks were not issued. We'll certainly investigate. > > The AEM Ingress Script controls S/C telecommunications commands for MGS, including playback and radio science commands. > > The SCT uplinked a STRPAN (Transmitter ON) command at 06:45:13 ERT UTC and downlink was regained one round-trip light time later. DSN locked up on 16 kbps data instead of the 85 kbps playback data that was expected. At 07:39:47, another SWEISE command was issued by the MM318A background sequence. Spacecraft events have been nominal ever since except the radio science occultation ingress commands just before Earth Occultation at 07:56:03 SCET UTC. This would be expected if my hypothesis is correct. > > MGS is presently in good health and sequencing is proceeding nominally. > > NOTE for the NAV team. S/C attitude remained at the Relay-16 orientation throughout. This anomaly affected telecom configuration commands only and should not impact your momentum management predictions. The HGA was autotracking throughout this period as expected. > > Steve Odiorne > MGS Spacecraft Engineer > E-mail: stephen.c.odiorne@lmco.com > Phone: (303) 977-7960 > Pager: (720) 521-5362