VOYAGER
Voyager LECP Data Analysis Handbook
Data File Descriptions
Master Rate (Tape) File Descriptions
Appendix B (continued)
Description of LECP Data Quality Word Contents
| BITS* | VARIABLE | DESCRIPTION |
|---|---|---|
| 0-7 | NBI | Number of Basic Intervals-contains the number of basic accumulation intervals over which the corresponding rate is accumulated. The accumulation time in milliseconds is given by NBI*BAI. (See Tape Header Variables, formerly Table B2.) |
| 8-10 | MPB | Motor Position-contains the motor position at the end of the accumulation interval. MPB ranges from 0 to 7, corresponding to the LECP sectors 1 thru 8 respectively. If MP or NMS (see Tape Header Variables, formerly Table B2) are less than zero then MPB is invalid. |
| 11 | MCF | Motor Centered Flag-is set if the status word indicates that the motor was centered within the sector. It is zero otherwise. |
| 12 | MMF | Motor Movement Flag-is set if a motor step occurred during the accumulation interval. It is zero otherwise. |
| 13 | DL | Discriminator Level-is set if the LECP Beta detector is set to its high threshold state. It is reset otherwise. |
| 14-15 | SS | Switch State-defines which of the b or b' and d or d' rates are accumulated. |
00=not known; 01=b' - d detectors
on; 10=b - d '
detectors on; 11=mixed
Bit 0 is the Least Significant Bit. If all bits=0 then datum
is missing.
Table B-5, PHA Data Point
| BYTE | CONTENTS |
| 1 | ID Identification plus some special codes 376 octal if data was not present 377 if input ID byte was =0 and next byte was not |
| 2 | D1/D5 |
| 3 | D2 |
| 4 | D3 |
| 5 | D4 |
Table B-6, Engineering Record on MRT File
| INTEGER | BYTE | VARIABLE | DESCRIPTION |
| 1-5 | 1-10 | Same as MRT Record Header Table B-2 | |
| 6 | 11 | ENFLGS | Flags in which bits numbered 7-0
contain 7-6 Engineering rate 00=10 bps, 01=40 bps, 10 = 1200 not handled, 11 = 7200 stored 1200 not handled |
| 6 | 12 | ENEMF | Engineering minor frame (0-59) of
MUX(1) If read from 100 deck, =0 from 200 deck If <0 occurred in earlier record not available. To reconstruct time if rate is 10 bps on 100 deck M216 from record header, M60=iemf (which may be negative) LC =1 |
| 7-15 | 13-30 | Same as MRT Record Header Table B-2 | |
| 16-17 | 31-34 | ENLEMT | LEMPA Telescope temperature REAL*4 |
| 18-19 | 35-38 | ENLOGT | Logarithmic amplifier temperature REAL*4 |
| 20 | 39-40 | ENRAB | Redundancy A or B |
| 21 | 41-42 | ENTDN | Temperature DN |
| 22 | 43-44 | MRRT | Record type 10=ENG, 11=CAL |
|
23-46 23-82 |
45-92 45-164 |
ENMUX | Array of readings each 1 byte 24 multiplexed readings for ENG data 60 multiplexed calibration readings for CAL |
Return to MRT main page.
Return to Data File Descriptions main page.
Return to Voyager
LECP Data Analysis Handbook Table of Contents.
Return to Fundamental
Technologies Home Page.
Updated 8/9/19, Cameron Crane
VOYAGER 1 ELAPSED TIME
--:--:--:--
Days: Hours:
Minutes: Seconds
*Since official launch
September 5, 1977, 12:56:00:00 UTC
*Since official launch
September 5, 1977, 12:56:00:00 UTC
VOYAGER 2 ELAPSED TIME
--:--:--:--
Days: Hours:
Minutes: Seconds
*Since official launch
August 20, 1977, 14:29:00:00 UTC
*Since official launch
August 20, 1977, 14:29:00:00 UTC
QUICK FACTS
Manufacturer:
Voyagers 1 and 2 were built in the Jet Propulsion
Laboratory in Southern California.
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.
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.