PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2007-07-29 NOTE = " E-mail and other messages concerning MGS Radio Science on or about 1999/053." END_OBJECT = TEXT END From ppriest@mmrs.fltops.jpl.nasa.gov Mon Feb 22 05:14:24 1999 Received: from airmail.fltops.jpl.nasa.gov (airmail.fltops.jpl.nasa.gov [137.228.96.12]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id FAA23152; Mon, 22 Feb 1999 05:13:07 -0800 (PST) Received: from mmrs.jpl.nasa.gov (mmrs.fltops.jpl.nasa.gov [137.228.136.10]) by airmail.fltops.jpl.nasa.gov (8.9.1b+Sun/8.9.1) with SMTP id FAA03996; Mon, 22 Feb 1999 05:13:43 -0800 (PST) Received: by mmrs.jpl.nasa.gov (SMI-8.6/SMI-SVR4) id NAA17905; Mon, 22 Feb 1999 13:13:37 GMT Date: Mon, 22 Feb 1999 13:13:37 GMT From: ppriest@mmrs.fltops.jpl.nasa.gov (Patricia Priest 264-859) Message-Id: <199902221313.NAA17905@mmrs.jpl.nasa.gov> To: data@magellan.stanford.edu, joe@neptune.Stanford.EDU, rsimpson@magellan.stanford.edu Content-Length: 1080 Status: RO DSS: 65 Orbit: 1499i SOE: p1474a.03.tsoe Begin Record: 053/01:03:00 End Record: 053/01:17:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1500e SOE: p1474a.03.tsoe Begin Record: 053/01:53:00 End Record: 053/02:03:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1500i SOE: p1474a.03.tsoe Begin Record: 053/03:01:00 End Record: 053/03:15:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1501e SOE: p1474a.03.tsoe Begin Record: 053/03:50:00 End Record: 053/03:59:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1501i SOE: p1474a.03.tsoe Begin Record: 053/04:59:00 End Record: 053/05:13:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1502e SOE: p1474a.03.tsoe Begin Record: 053/05:48:00 End Record: 053/05:57:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1502i SOE: p1474a.03.tsoe Begin Record: 053/06:56:00 End Record: 053/07:11:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1503e SOE: p1474a.03.tsoe Begin Record: 053/07:46:00 End Record: 053/07:55:00 Last Attenuation Change: SNT: Elevation Angle: -------------------------------------------------------------------------- From ppriest@mmrs.fltops.jpl.nasa.gov Mon Feb 22 05:14:41 1999 Received: from airmail.fltops.jpl.nasa.gov (airmail.fltops.jpl.nasa.gov [137.228.96.12]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id FAA23155; Mon, 22 Feb 1999 05:14:18 -0800 (PST) Received: from mmrs.jpl.nasa.gov (mmrs.fltops.jpl.nasa.gov [137.228.136.10]) by airmail.fltops.jpl.nasa.gov (8.9.1b+Sun/8.9.1) with SMTP id FAA04004; Mon, 22 Feb 1999 05:15:00 -0800 (PST) Received: by mmrs.jpl.nasa.gov (SMI-8.6/SMI-SVR4) id NAA17991; Mon, 22 Feb 1999 13:14:54 GMT Date: Mon, 22 Feb 1999 13:14:54 GMT From: ppriest@mmrs.fltops.jpl.nasa.gov (Patricia Priest 264-859) Message-Id: <199902221314.NAA17991@mmrs.jpl.nasa.gov> To: data@magellan.stanford.edu, joe@neptune.Stanford.EDU, rsimpson@magellan.stanford.edu Content-Length: 682 Status: RO DSS: 15 Orbit: 1503i SOE: p1474a.03.tsoe Begin Record: 053/08:54:00 End Record: 053/09:09:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1504e SOE: p1474a.03.tsoe Begin Record: 053/09:43:00 End Record: 053/09:52:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1504i SOE: p1474a.03.tsoe Begin Record: 053/10:51:00 End Record: 053/11:06:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1505e SOE: p1474a.03.tsoe Begin Record: 053/11:41:00 End Record: 053/11:50:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1505i SOE: p1474a.03.tsoe Begin Record: 053/12:49:00 End Record: 053/13:04:00 Last Attenuation Change: SNT: Elevation Angle: -------------------------------------------------------------------------- From ppriest@mmrs.fltops.jpl.nasa.gov Mon Feb 22 17:40:49 1999 Received: from airmail.fltops.jpl.nasa.gov (airmail.fltops.jpl.nasa.gov [137.228.96.12]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id RAA04212; Mon, 22 Feb 1999 17:40:49 -0800 (PST) Received: from mmrs.jpl.nasa.gov (mmrs.fltops.jpl.nasa.gov [137.228.136.10]) by airmail.fltops.jpl.nasa.gov (8.9.1b+Sun/8.9.1) with SMTP id RAA14884; Mon, 22 Feb 1999 17:41:44 -0800 (PST) Received: by mmrs.jpl.nasa.gov (SMI-8.6/SMI-SVR4) id BAA22130; Tue, 23 Feb 1999 01:41:38 GMT Date: Tue, 23 Feb 1999 01:41:38 GMT From: ppriest@mmrs.fltops.jpl.nasa.gov (Patricia Priest 264-859) Message-Id: <199902230141.BAA22130@mmrs.jpl.nasa.gov> To: data@magellan.stanford.edu, joe@neptune.Stanford.EDU, rsimpson@magellan.stanford.edu Content-Length: 1505 Status: RO DSS: 45 Orbit: 1506e SOE: p1474a.03.tsoe Begin Record: 053/13:39:00 End Record: 053/13:47:00 Last Attenuation Change: SNT: 32.82 Elevation Angle: 22.653 Orbit: 1506i SOE: p1474a.03.tsoe Begin Record: 053/14:47:00 End Record: 053/15:03:00 Last Attenuation Change: SNT: 29.78 Elevation Angle: 34.643 Orbit: 1507e SOE: p1474a.03.tsoe Begin Record: 053/15:36:00 End Record: 053/15:44:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1507i SOE: p1474a.03.tsoe Begin Record: 053/16:45:00 End Record: 053/17:01:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1508e SOE: p1474a.03.tsoe Begin Record: 053/17:34:00 End Record: 053/17:42:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1508i SOE: p1474a.03.tsoe Begin Record: 053/18:42:00 End Record: 053/18:58:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1509e SOE: p1474a.03.tsoe Begin Record: 053/19:32:00 End Record: 053/19:40:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1509i SOE: p1474a.03.tsoe Begin Record: 053/20:40:00 End Record: 053/20:56:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1510e SOE: p1474a.03.tsoe Begin Record: 053/21:29:00 End Record: 053/21:37:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1510i SOE: p1474a.03.tsoe Begin Record: 053/22:37:00 End Record: 053/22:54:00 Last Attenuation Change: SNT: Elevation Angle: Orbit: 1511e SOE: p1474a.03.tsoe Begin Record: 053/23:27:00 End Record: 053/23:35:00 Last Attenuation Change: SNT: Elevation Angle: -------------------------------------------------------------------------- From trish@godzilla.jpl.nasa.gov Thu Feb 25 14:23:24 1999 Received: from godzilla.jpl.nasa.gov (godzilla.jpl.nasa.gov [137.78.177.120]) by magellan.Stanford.EDU (8.8.5/8.8.3) with ESMTP id OAA10930 for ; Thu, 25 Feb 1999 14:23:23 -0800 (PST) Received: from rodan.jpl.nasa.gov (rodan.jpl.nasa.gov [137.78.177.110]) by godzilla.jpl.nasa.gov (8.8.8+Sun/8.8.5) with ESMTP id OAA19918 for ; Thu, 25 Feb 1999 14:24:15 -0800 (PST) Received: from 137.78.177.117 (trish-mac.jpl.nasa.gov [137.78.177.117]) by rodan.jpl.nasa.gov (8.8.5/8.8.5) with SMTP id OAA14600 for ; Thu, 25 Feb 1999 14:24:15 -0800 (PST) Message-Id: <199902252224.OAA14600@rodan.jpl.nasa.gov> Date: 25 Feb 99 14:27:10 -0800 From: Trish Priest Subject: Some mysteries solved To: Richard Simpson X-Mailer: QuickMail Pro 1.5.4 (Mac) X-Priority: 3 Reply-To: Trish Priest MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-Ascii" Content-Length: 2200 Status: RO Hello, Dick, Below are some more explanations. DOY 050 DSS 65 I'm not sure about the low signal yet. Everything was set up correctly. The four which were lost -- the DSP seems to have fallen out of the link. This seems to happen at SPC 60 occassionally, but we have been here in the past. I will notify Sal. 1466e and 1467e suffered from the SPAR initialization failure problem, but the real problem was that the DSP no longer thought that it was in a link. 1467i and 1468i 050/10:12:00 and 12:10:00, respectively Suffer from no signal according to your health report. Scripts ran correctly; attenuation was fine; predicts seem fine; spacecraft should have been one-way. I have to look further. 1469e and 1469i DSS45 DSS45 antenna was going red at the time. The station reported large amplitude variations. We switched the DSP to DSS34. 1471i 050/18:08:00 Another SPAR initialization failure. This will be corrected automatically in the next version of remote ops. 1472e 050/18:57:00 This appears in the log, but I can't find a script. This may have been my fault. 1481i 051/13:46:00 DSS45 You reported this as the wrong filter. Actually there was too much attenuation. Would that explain what you saw? We set up for the wrong DSP at SPC 40. The attenuation settings are very different. 1486e 051/22:26:00 DSS45 You said that there were saturated A/Ds. Where the measurements previous to this one getting close to the edge? The attenuators were set correctly and the same for the entire pass. 1486i 051/23:35:00 DSS45 This was not a gap. It was scripted for DSS 45. I suspect another SPAR initialization problem, but I have to check. 052/09:21:00, 10:12:00, 11:19:00, DSN gap? Yes between 65 and 15 053/16:45:00 "Unknown event" about 2 minutes after ingress. Nothing odd in SOE for this time. This is still open, but it doesn't sound like it should be at the top of the stack. I think that this gets me up-to-date except for the ongoing mysteries. Tonight there will still be Y2k testing at SPC 10, so 1552i through 1554e will be lost. Otherwise, we will be collecting data as usual until I hear that they are going to try NADIR again. -Trish -------------------------------------------------------------------------- From rsimpson Thu Feb 25 15:05:26 1999 Received: (from rsimpson@localhost) by magellan.Stanford.EDU (8.8.5/8.8.3) id PAA11070; Thu, 25 Feb 1999 15:05:26 -0800 (PST) Date: Thu, 25 Feb 1999 15:05:26 -0800 (PST) From: Dick Simpson 723-3525 Message-Id: <199902252305.PAA11070@magellan.Stanford.EDU> To: trish@godzilla.jpl.nasa.gov Subject: Re: Some mysteries solved Cc: rsimpson Content-Length: 2900 Status: R >1481i 051/13:46:00 DSS45 >You reported this as the wrong filter. Actually there was too much >attenuation. Would that explain what you saw? We set up for the wrong >DSP at SPC 40. The attenuation settings are very different. Our software shows the 100 Hz filter being used. It's also true that the signal level is alomst 40 dB lower than it should be. Could easily be a combination of the two. If the filter set is different on the second DSP, that would explain our initial reaction. Bottom line is that this one won't make it into the literature about Mars. >1486e 051/22:26:00 DSS45 >You said that there were saturated A/Ds. Where the measurements previous >to this one getting close to the edge? The attenuators were set >correctly and the same for the entire pass. The immediate previous occultation was an ingress where our software hiccupped as though there were lost records; we don't have a power vs time plot. But the histogram of data sample values looks OK. (1485i). Before that, 1485e looks perfect. But 1484i is about 10 dB too low The histogram is very narrow, so I'm guessing the attenuators on 1484i were set 10 dB too high. Everything before that looks nominal until you get to 1481i. >053/16:45:00 >"Unknown event" about 2 minutes after ingress. >Nothing odd in SOE for this time. This is still open, but it doesn't >sound like it should be at the top of the stack. This looks like a ground problem -- something corrupting the input signal to the DSP, or maybe the DSP itself misbehaving. Since it's respectably after the ingress event, I would definitely put it at the bottom of the stack. >I think that this gets me up-to-date except for the ongoing mysteries. Good enough for me. Nice work. Thanks much. >Tonight there will still be Y2k testing at SPC 10, so 1552i through 1554e >will be lost. Otherwise, we will be collecting data as usual until I >hear that they are going to try NADIR again. Thanks for the alert. You have done a nice job dancing around all the NADIR changes so far. If this is going to be a RadioScience-only mission, we're in good hands. QUESTION: I have got out of the habit of including figures with the health reports. That's largely because I got some negative feedback from PDS on the way I was archiving them. Nothing too serious, but it was going to require more work to include them in the archive than I was prepared to invest. So I dropped them. But we're generating all kinds of figures; if there's anything you'd like to see, just holler. the FAX is only a few steps away -- or I could send you the PostScript files via e-mail as before. It's just going to be a hassle wrapping them with the health report -- unless we find something REALLY big.