Fundamental Technologies

Voyager LECP Pages

Record Format for FAT

This file is composed of 2800 byte records, sequential in time, with cadence equal to the stepping period of the LECP instrument. Each record consists has the following layout:

Bytes 1-200

Bytes 201-600

Bytes 601-800

Bytes 701-900

Bytes 901-2400

Bytes 2401-2800

KHED(100)

R(100)

IUNCS(100)

NSAMP(100)

IFILL(700)

ISTP(100,2)

Integer*2

Real*4

Integer*2

Integer*2

Integer*2

Integer*2

In the FORTRAN programs of the VGER processing, the FAT record can be represented by the following labeled COMMON block and Type Declarations for the variables:

COMMON/FOUT/KHED,R,IUNCS,NSAMP,IFILL,ISTP
INTEGER*2 KHED(100) !OUTPUT RECORD HEADER
INTEGER*2 IUNCS(100) !OUTPUT RECORD UNCS (64*PERCENT)
INTEGER*2 NSAMP(100) !OUTPUT REC. #OF BASIC ACCUM. INTERVAL
INTEGER*2 IFILL(700) !SPACE IN COMMON BLOCK FOR THE FLUXES
INTEGER*2 ISTP(100,2) !STARTING AND ENDING MOTOR POSITIONS
REAL*4 R(100) !OUTPUT RECORD COUNT RATES.(C/SEC.)

A list of contents of KHED(100) follows:

INDEX

ITEM

TYPE

DESCRIPTION

1

SCID

I*2

LEFT BYTE:     SPACECRAFT ID. & /MODE IS S/C ID. 0=VGR 2, 1=VGR 1
RIGHT BYTE:    MODE(HEX) A=GS3, 7=CR1, 1=CR2, 2=CR3,5=CR6,8=NE, 18 OR 1D = CR5A

2

DIR

I*2

SCAN DIRECTION 1=INCR., -1=DECR.

3

ST01

I*2

FIRST OCCURRENCE OF STATUS WORD 1

4

ST01

I*2

LAST OCCURRENCE OF STATUS WORD 1

5

ST02

I*2

FIRST OCCURRENCE OF STATUS WORD 2

6

ST02

I*2

LAST OCCURRENCE OF STATUS WORD 2

7

ST03

I*2

FIRST OCCURRENCE OF STATUS WORD 3

8

ST03

I*2

LAST OCCURRENCE OF STATUS WORD 3

9

ST04

I*2

FIRST OCCURRENCE OF STATUS WORD 4

10

ST04

I*2

LAST OCCURRENCE OF STATUS WORD 4

11

ST05

I*2

FIRST OCCURRENCE OF STATUS WORD 5

12

ST05

I*2

LAST OCCURRENCE OF STATUS WORD 5

13

ST06

I*2

FIRST OCCURRENCE OF STATUS WORD 6

14

ST06

I*2

LAST OCCURRENCE OF STATUS WORD 6

15

MPOS

I*2

MOTOR POSITION(0,1,2,3,4,5,6,7)

16

TTEMP

I*2

TEL. TEMP, (128*CENT. DEG)(-9999 IF UNK.)

17

LOGT

I*2

LOG AMP. TEMP. (128* CENT.DEG.)

18

TIMUNT

I*2

BASIC ACCUM. TIME UNIT IN SECONDS FROM MRT

19

NGRP

I*2

NUMBER OF RATE GROUPS IN THIS FORMAT

20

G18

I*2

GROUP 18 I.D./SC EVENT TIME FLAG

21

ALTFLG

I*2

FLAG FOR THE GS3 50-50 MODE 0=LEPT, 1=LEMPA

22

DATE

A*2

FIRST TWO CHARACTERS OF PRODUCTION DATE

23

DATE

A*2

PRODUCTION DATE (cont.)

24

DATE

A*2

PRODUCTION DATE (cont.)

25

DATE

A*2

PRODUCTION DATE (cont.)

26

DATE

A*2

PRODUCTION DATE (cont.)

27

DATE

A*2

PRODUCTION DATE (cont.)

28

RATE

I*2

STEPPING RATE, SECONDS.

29

SPARE

I*2

 

30

ADFL

I*2

FLAG=1 FOR DEAD TIME CORR. APPLIED (ALPHA)

31

BDFL

I*2

FLAG=1 FOR DEAD TIME CORR. APPLIED (BETA)

32

ADVR

A*2

TWO CHARACTERS FOR DEAD TIME VERSION USED (ALPHA)

33

BDVR

A*2

TWO CHARACTERS FOR DEAD TIME VERSION USED (BETA)

34

SPARE

I*2

 

35

SECST

I*2

16*AVG BEGIN TIME IN SECONDS

36

SECSP

I*2

16*AVG END TIME IN SECONDS

37

M60F

I*2

VALUE OF MOD 60 AT FIRST APPEARANCE

38

M60L

I*2

VALUE OF MOD 60 AT LAST APPEARANCE

39

M16F

I*2

VALUE OF MOD 2**16 AT FIRST APPEARANCE

40

M16L

I*2

VALUE OF MOD 2**16 AT LAST APPEARANCE

41

SCETHS

I*2

SPACECRAFT EVENT TIME HOUR AT START

42

SCETHE

I*2

SPACECRAFT EVENT TIME HOUR AT END

43

SCETSS

I*2

SPACECRAFT EVENT TIME SECOND AT START

44

SCETSE

I*2

SPACECRAFT EVENT TIME SECOND AT END

45

SCETMS

I*2

SPACECRAFT EVENT TIME MILLISECOND START

46

SCETME

I*2

SPACECRAFT EVENT TIME MILLISECOND END

47

SCETYS

I*2

SPACECRAFT EVENT TIME YEAR AT START

48

SCETYE

I*2

SPACECRAFT EVENT TIME YEAR AT END

49

WYEAR

I*2

AVG. WINDOW YEAR IF APPLICABLE.

50

WDAY

I*2

AVG. WINDOW DAY IF APPLICABLE.

51

WHR

I*2

AVG. WINDOW HOUR IF APPLICABLE.

52

WSEC

I*2

AVG. WINDOW SECONDS IF APPLICABLE.

53

WINC

I*2

100. AVG DURATION IN HOURS.

54

SPARE

I*2

 

55

SPARE

I*2

 

56

SPARE

I*2

 

57

SPARE

I*2

 

58

SPARE

I*2

 

59

SPARE

I*2

 

60

S/C R

I*2

JOVICENTRIC RADIAL DISTANCE IN UNITS OF 100*RJ

61

S/C Lat

I*2

JOVIMAGNETIC DIPOLE LATITUDE OF S/C IN 10*DEGREES

62

S/C Long.

I*2

JOVIMAGNETIC DIPOLE LONGITUDE OF S/C IN 10*DEGREES

63

S/C SIII Long

 

SYSTEM III LONG OF S/C IN 10*DEGREES

64

IO SIII Long

 

SYSTEM III LONG OF IO IN 10*DEGREES

65

EU SIII Long

 

SYSTEM III LONG OF EUROPA IN 10 * DEGREES

66

NAME

A*2

INPUT FILENAME

67

NAME

A*2

INPUT FILENAME (cont.)

68

NAME

A*2

INPUT FILENAME (cont.)

69

NAME

A*2

INPUT FILENAME (cont.)

70

Bx

 

MAGNETIC FIELD X COMPONENT IN UNITS OF 10*GAMMA

71

By

 

MAGNETIC FIELD Y COMPONENT IN UNITS OF 10*GAMMA

72

Bz

 

MAGNETIC FIELD Z COMPONENT IN UNITS OF 10*GAMMA

 

 

 

IF BY=BZ=32767 THEN BX IS THE MAGNITUDE OF THE FIELD

73

L

 

MAGNETIC FIELD L VALUE OF THE SPACECRAFT

74

SPARE