Fundamental TechnologiesVoyager LECP Pages |
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.
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 |
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 (DN is raw value) |
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 |
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Last modified 5/4/05, Tizby Hunt-Ward
tizby@ftecs.com
Original page by I. Robertson