Voyager LECP Data Analysis Handbook
Data File Descriptions
Experiment Data Record (EDR) Format Specification
Cruise 6
(From Document 618-306, Revision D)
The LECP EDR science record is designed to a 24 minute instrument measurement period. Any data not present during the instrument measurement will be filled with binary zeroes.
A logical record corresponds to an instrument measurement period and in this instance is also the science physical record structure.
The science logical/physical record structure is diagrammed in Figure 9.3-1.
Figure 9.3-1. LECP EDR Tape Record (Science)
|
Standard Header (60 32-bit Words) |
Subheader (8 32-bit Words) |
Science Data (1440 32-bitWords) |
= 75 MF (1508 32-bit Words) in CR-6 |
Figure 9.3-3 and Table 9.3-1 describe the structure and contents of the LECP science record subheader.
Figure 9.3-3. LECP Science Record Subheader Format, CR-6
Segment 1
|
Word |
Bits 31 16 0 |
31 16 0 |
||
| 1 | LECP CMD WRD #1 MF 5 |
LECP CMD WRD #2 |
LECP CMD WRD #3 MF 25 |
LECP CMD WRD #4 MF 35 |
| 3 | LECP CMD WRD #5 MF 45 |
LECP CMD WRD #6 MF 55 |
LECP CMD WRD #7 MF 65 |
LECP CMD WRD #8 MF 75 |
| 5 | Spare | Spare | ||
| 7 | Spare | Spare | ||
MF 1-75
Segment 2
|
Word |
Bits 31 16 0 |
31 16 0 |
||
| 1 | Spare | Spare | ||
| 3 | Spare | Spare | ||
| 5 |
LECP CMD WRD #9 |
LECP CMD WRD #10 |
LECP CMD WRD #11 MF 105 |
LECP CMD WRD #12 MF 115 |
| 7 | LECP CMD WRD #13 MF 125 |
LECP CMD WRD #14 MF 135 |
LECP CMD WRD #15 MF 145 |
Spare |
MF 76-150
Figure 9.3-4 defines the science data word.
Figure 9.3-4. LECP Science Data Word, CR-6
|
Spare |
LECP Science Data Word |
||||||||||||||
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Figure 9.3-5 and Table 9.3-2 define the science record data block structure and contents. Figure 9.3-6 and Table 9.3-3 define the LECP data arrangement.
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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.