Event | V1 Date | V2 Date |
---|---|---|
Launch | 8/20/77 (d232) | 9/5/77 (d248) |
Jupiter closest approach | 3/5/79 (d64) | 7/9/79 (d190) |
Saturn closest approach | 11/20/80 (d325) | 8/25/81 (d237) |
V2 detector 0 failed, very few Rate 32 (o241), 33 (o240), 34 (o220), or 35 (o221) PHAs afterwards | 8/26/1981 (d238) | |
Uranus closest approach | N/A | 1/24/86 (d24) |
Neptune closest approach | N/A | 8/25/89 (d237) |
Cruise-5a (CR5a) telemetry mode | 8/8/90 (d220) | 6/4/90 (d155) |
V2 discriminator issues started | N/A | 4/6/2005 (d097) |
Termination Shock Crossing | 12/1/04 (d336) | 8/30/07 (d242) |
V2 discriminator issues seemingly self-corrected | 8/14/2017 (d226) | |
Heliopause Crossing | 8/25/2012 (d238) | 11/5/2018 (d309) |
V2 power cycled | N/A | 1/26/2020 (d026) |
V2 LECP recovered | N/A | 2/5/2020 (d036) |
Heater Off | 5/16/2021 (d136) | 2/23/2021 (d054) |
V1 D2 commanded OFF | 11/12/2021 (d316) (data gap) 11:43 | N/A |
V1 D2 commanded ON | 12/3/2021 (d337) 16:59:46 | N/A |
V1 SUB_COM D1 Fast OFF for unknown reason | 12/9/2021 (d343) 19:20:34 | N/A |
V1 D2 commanded OFF | 12/28/2021 (d362) 08:27:45 | N/A |
V1 SUB_COM D1 Fast commanded ON | 1/27/2022 (d027) 01:47:44 | N/A |
CRS Heater Off | 5/18/2022 (d138) | 06/09/2019 Replacement 06/27/2019 Supplemental |
V2 in EL-40 Mode instead of CR-5T Mode | N/A | 8/6/2022T05:25 - 8/11/2022T18:15 (d218 - 223) |
No V2 data due to DSN hardware problem | N/A | 8/16/2022 (d228) |
UMD Voyager Processing Information
Steve Geary LECP Engineering Paper
Peletier LECP Engineering Paper
Handout from Doug with Rate Channel Logic and Detector Thresholds
Drawings of the LECP detector layout and notes on the anticoincidence detectors
Web pages from the Data Analysis Handbook from Fundamental Technologies (old version of the site)
Words | Bytes | Name | Data Type |
---|---|---|---|
1 - 38 | 1 - 76 | MRT Record Header | 1 & 2 Byte Integer Words |
39 - 282 | 77 - 564 | Rate Data | 4 Byte Real Words (in 1 and 3 word groups) |
283 - 404 | 565 - 808 | Rate Data Quality Words | 2 Byte Real Words (in 1 and 3 word groups) |
405 - 484 | 809 - 968 | PHA Data | 1 Byte Logical Words, 32 (5-Word) Data Points |
Fig. 1-2 CR5a MRT Record layout. Rate data are stored each TAI for each rate- channel. Only 32 PHA data points are stored, selected by the priority scheme.
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