Voyager LECP Data Analysis Handbook
Data File Descriptions
Master Rate (Tape) File Descriptions
Near Encounter
LECP Rate Groups
Near Encounter Mode
| GROUP | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| G1 | Pα1 | Pα2 | Pα3 | Eβ4 |
| G2 | Eβ1 | Eβ2 | Eβ3 | Eγ6 |
| G3 | Pδ9 | Pδ10 | Pδ11 | Aδ3 |
| G4 | Eγ7 | Eγ8 | Eγ9 | Eβ5 |
| G5 | PSA3 | PSB3 | PAB12 | PAB13 |
| G6 | Pα4 | Pα8 | ESA0 | ESB0 |
| G7 | PSA1 | PSB1 | PSA2 | PSB2 |
| G9 | EAB10 | Pα5 | Pα6 | Pα7 |
| G15 | Aα1 | Aα2 | Pα6 | Pα7 |
| G17 | Iβ | Iα | See note 1 | |
| G18 | See note 2 | |||
NOTE 1: The Status words S3-S6 are subcommutated into words 3 and 4 by the 2 low order bits of the frame counter as follows:
| (Frame Count) MOD 2 | WORD 3 | WORD 4 |
|---|---|---|
| 00 | S5 | S5 |
| 01 | S1 | S3 |
| 10 | S6 | S6 |
| 11 | S2 | S4 |
NOTE 2: Group 18 is derived by subcommutating the groups listed above into the Group 18 readout using the frame counter. The frame counter is incremented at the end of each Group 18 readout sequence. The readout sequence is as follows:
| FRAME COUNTER BITS 2-5 |
RATE GROUP | FRAME COUNTER BITS 2-5 |
RATE GROUP |
|---|---|---|---|
| 0000 | 1 | 0101 | 6 |
| 0001 | 2 | 0110 | 7 |
| 0010 | 3 | 0111 | 15 |
| 0011 | 4 | 1000 | 9 |
| 0100 | 5 |
Next: Data Block Contents for Near Encounter
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LECP Data Analysis Handbook Table of Contents.
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Technologies Home Page.
Updated 8/9/19, Cameron Crane
VOYAGER 1 ELAPSED TIME
*Since official launch
September 5, 1977, 12:56:00:00 UTC
VOYAGER 2 ELAPSED TIME
*Since official launch
August 20, 1977, 14:29:00:00 UTC
QUICK FACTS
Mission Duration: 40+ years have elapsed for both Voyager 1 and Voyager 2 (both are ongoing).
Destination: Their original destinations were Saturn and Jupiter. Their current destination is interstellar space.