Fundamental TechnologiesVoyager LECP Pages |
Record Format for Cruise
List of Header Block Contents
ITEM |
INDEX |
NAME |
TYPE |
DESCRIPTION |
1 |
1 |
SCID |
I*1 |
Spacecraft Identification; 1=Voyager 1; 0=Voyager 2 |
2 |
|
MODE |
I*1 |
Spacecraft telemetry mode 01(H)=CR2; 02(H)=CR3; 03(H)=CR4 04(H)=CR5; 05(H)=CR6; 07(H)=CR1 0A(H)=FE; 08(H)=NE; 18(H) or 1D(H) CR5A |
Spacecraft Event Time-contains the Greenwich Mean of the first bit of the first spacecraft minor frame used in this LECP major frame |
||||
3 |
2 |
SCETH |
I*2 |
Spacecraft Event Time, Hour-number of hours since the beginning of the current year plus 24. For the one hour interval Jan 1, 0000-0059 UT, SCET=24. The Day of Year may be computed using DAY=(SCETH/24) |
4 |
3 |
SCETS |
I*2 |
Spacecraft Event Time (sec.) number of seconds since the beginning of the current hour |
5 |
4 |
SCETMS |
I*2 |
Spacecraft Event Time, (millisec) no. of milliseconds since the beginning of the current second. |
6 |
5 |
SCETY |
I*2 |
Spacecraft Event Time, Year-contains the last two digits of the current year (i.e., 77, 78) |
7 |
6 |
G18ID |
I*1 |
Group 18 Identification-contains the number of the LECP data group being readout at the end of the current LECP major frame |
8 |
7 |
SCETF |
I*1 |
Spacecraft Event Time Flag-indicates that the spacecraft clock has been corrected in some manner in the JPL processing. Bit 0 indicates correction to the line count (0=none, 1=corrected) bit 1 the MOD60 counter and bit 2 the MOD2**16 counter. |
9 |
7 |
MOD216 |
I*2 |
Mod2**16 Spacecraft Clock Word-contains the spacecraft Mod2**16 word for the first minor frame of the current record. This word is incremented every 48 minutes on the overflow of the Mod60 counter |
10 |
8 |
M60 |
I*2 |
Mod60 Spacecraft Clock Word-contains the spacecraft Mod60 word for the first minor frame of the current record. It has a range of 0 to 59 and is incremented every 48 seconds at the overflow of the line counter |
11 |
9 |
LC |
I*2 |
Spacecraft Line Counter-contains the line count for the first minor frame in the current record LC ranges from 1 to 800(D) and is incremented every 0.06 seconds |
12 |
10 |
S1 |
I*2 |
LECP Status Word 1, 10 bits, right justified |
13 |
11 |
S2 |
I*2 |
LECP Status Word 2, 10 bits, right justified |
14 |
12 |
S3 |
I*2 |
LECP Status Word 3, 10 bits, right justified |
15 |
13 |
S4 |
I*2 |
LECP Status Word 4, 10 bits, right justified |
16 |
14 |
S5 |
I*2 |
LECP Status Word 5, 10 bits, right Justified |
17 |
15 |
S6 |
I*2 |
LECP Status Word 6, 10 bits, right justified |
18 |
16 |
MP |
I*2 |
LECP Motor Position-contains the motor position at the end of the current record. Bit 0 is set if the status word indicates motor centering, it is zero otherwise. Bits 1-3 contain the motor position with 0-7 corresponding to sector 1 thru 8 respectively. MP=-1 if motor position is unknown |
19 |
17 |
NMS |
I*2 |
Number of Motor Steps-indicates the number of motor steps within the current LECP Major Frame. Turn arounds in Sectors 8 and 1 or 2 are considered to be two steps. If = -1, datun is unknown. |
20 |
18 |
LATEMP |
I*2 |
LECP Log. Amp. Temperature-contains the log. amp. temp. (degrees C) x 128. LATEMP= -9999 if the temperature is unknown |
21 |
19 |
TTEMP |
I*2 |
LECP Telescope Temperature-contains the telescope temperature (degrees C) x 128. TTEMP= -9999 if the temperature is unknown |
22 |
20 |
BAI |
I*2 |
Basic Accumulation Interval-contains the number of milliseconds of accumulation times for the group 1 and 2 logics (Exception—for CR5A units are 0,01 sec.!!) |
23 |
21 |
NG |
I*2 |
Number of Groups-indicates the number of rate groups included in the current major frame |
24 |
22 |
MRT/MPT |
I*2 |
01=Master Rate Record, 02=Master Pulse Record, 4 SEDR, 10 ENG, 11 Cal |
25 |
23 |
VN |
I*2 |
Version Number-indicates the version of S1P used to process the current data |
26 |
24 |
LEPT/LEMPA |
I*2 |
Indicates data type in record: -1=Don't know; 0=LEPT; 1=LEMPA "Normal" NE Logics in GS3 |
27 |
25 |
RED A/B |
I*2 |
Redundancy A or B logic flag, -1 Unknown, 0 = A; 1 = B |
28 |
26 |
PROC. STAT |
I*2 |
Check SW4 for 50/50. If 50/50 then Item 26 0=LEPT Norm F.E. 1=LEMPA |
29 |
27 |
STEPPING RATE |
I*2 |
Motor period in seconds: -1 = Unknown; 0 = not decoded; 9000 = encounter stow (V2 Jupiter) 10000 Stowed or commanded to position; otherwise one of 5,6,24,48,192,360 or 384 sec. |
30 |
28 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
31 |
30 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
32 |
31 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
33 |
32 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
34 |
33 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
35 |
34 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
36 |
35 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
37 |
36 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
38 |
37 |
|
I*2 |
Status Word 5 (Near Encounter only) otherwise unused. |
39 |
38 |
|
I*2 |
Spare |
ITEM |
ARRAY |
INDEX |
LOGIC |
#AVG |
TYPE |
WORD |
40 |
R50(50,4) |
1 |
PL01 |
1 |
R*4 |
39-138 |
|
|
2 |
PL02 |
1 |
R*4 |
139-238 |
|
|
3 |
PL03 |
1 |
R*4 |
239-333 |
|
|
4 |
EG06 |
1 |
R*4 |
339-438 |
41 |
R25(25,17) |
1 |
EB1 |
1 |
R*4 |
439-488 |
|
|
2 |
EB1 alt |
1 |
R*4 |
489-538 |
|
|
3 |
EB2 |
1 |
R*4 |
539-588 |
|
|
4 |
EB2 alt |
1 |
R*4 |
589-638 |
|
|
5 |
EB3 |
1 |
R*4 |
639-688 |
|
|
6 |
EB3 alt |
1 |
R*4 |
689-738 |
|
|
7 |
EB4 |
1 |
R*4 |
739-788 |
|
|
8 |
EB4 alt |
1 |
R*4 |
789-838 |
|
|
9 |
EG06 |
2 |
R*4 |
839-888 |
|
|
10 |
EG07 |
1 |
R*4 |
889-938 |
|
|
11 |
EG08 |
1 |
R*4 |
939-988 |
|
|
12 |
EG09 |
1 |
R*4 |
989-1038 |
|
|
13 |
32 |
1 |
R*4 |
1039-1088 |
|
|
14 |
31 |
1 |
R*4 |
1089-1138 |
|
|
15 |
39 |
1 |
R*4 |
1139-1188 |
|
|
16 |
33 |
1 |
R*4 |
1189-1238 |
|
|
17 |
EB05-EB'5 |
1 |
R*4 |
1239-1288 |
42 |
R10(10,7) |
1 |
PL04 |
1 |
R*4 |
1289-1308 |
|
|
2 |
PL08 |
1 |
R*4 |
1309-1328 |
|
|
3 |
1 |
1 |
R*4 |
1329-1348 |
|
|
4 |
10 |
1 |
R*4 |
1349-1368 |
|
|
5 |
16 |
1 |
R*4 |
1369-1388 |
|
|
6 |
3 |
1 |
R*4 |
1389-1408 |
|
|
7 |
44 |
1 |
R*4 |
1409-1428 |
43 |
R5(5,31) |
1 |
PL01 |
10 |
R*4 |
1429-1438 |
|
|
2 |
PL02 |
10 |
R*4 |
1439-1448 |
|
|
3 |
PL03 |
10 |
R*4 |
1449-1458 |
|
|
4 |
PL04 |
2 |
R*4 |
1459-1468 |
|
|
5 |
PL05 |
1 |
R*4 |
1469-1478 |
|
|
6 |
PL06 |
1 |
R*4 |
1479-1488 |
|
|
7 |
PL07 |
1 |
R*4 |
1489-1498 |
|
|
8 |
PL08 |
2 |
R*4 |
1499-1508 |
|
|
9 |
32 |
5 |
R*4 |
1509-1518 |
|
|
10 |
1 |
2 |
R*4 |
1519-1528 |
|
|
11 |
10 |
2 |
R*4 |
1529-1538 |
|
|
12 |
11 |
1 |
R*4 |
1539-1548 |
|
|
13 |
16 |
2 |
R*4 |
1549-1558 |
|
|
14 |
23 |
1 |
R*4 |
1559-1568 |
|
|
15 |
27 |
1 |
R*4 |
1569-1578 |
|
|
16 |
31 |
5 |
R*4 |
1579-1588 |
|
|
17 |
39 |
5 |
R*4 |
1589-1598 |
|
|
18 |
33 |
5 |
R*4 |
1599-1608 |
|
|
19 |
3 |
2 |
R*4 |
1609-1618 |
|
|
20 |
4 |
1 |
R*4 |
1619-1628 |
|
|
21 |
12 |
1 |
R*4 |
1629-1638 |
|
|
22 |
13 |
1 |
R*4 |
1639-1648 |
|
|
23 |
17 |
1 |
R*4 |
1649-1658 |
43 |
R5(5,31) |
24 |
24 |
1 |
R*4 |
1659-1668 |
|
|
25 |
28 |
1 |
R*4 |
1669-1678 |
|
|
26 |
38 |
1 |
R*4 |
1679-1688 |
|
|
27 |
35 |
1 |
R*4 |
1689-1698 |
|
|
28 |
41(ALAR) |
1 |
R*4 |
1699-1708 |
|
|
29 |
45 |
1 |
R*4 |
1709-1718 |
|
|
30 |
42 |
1 |
R*4 |
1719-1728 |
|
|
31 |
42 alt |
1 |
R*4 |
1729-1738 |
44 |
R2(2,14) |
1 |
34 |
1 |
R*4 |
1739-1742 |
|
|
2 |
5 |
1 |
R*4 |
1743-1746 |
|
|
3 |
14 |
1 |
R*4 |
1747-1750 |
|
|
4 |
18 |
1 |
R*4 |
1751-1754 |
|
|
5 |
6 |
1 |
R*4 |
1755-1758 |
|
|
6 |
7 |
1 |
R*4 |
1759-1762 |
|
|
7 |
19 |
1 |
R*4 |
1763-1766 |
|
|
8 |
25 |
1 |
R*4 |
1767-1770 |
|
|
9 |
36 |
1 |
R*4 |
1771-1774 |
|
|
10 |
8 |
1 |
R*4 |
1775-1778 |
|
|
11 |
9 |
1 |
R*4 |
1779-1782 |
|
|
12 |
43 |
1 |
R*4 |
1783-1786 |
|
|
13 |
46 D1F1 |
1 |
R*4 |
1787-1790 |
|
|
14 |
47 D1F2 |
1 |
R*4 |
1791-1794 |
45 |
R1(10) |
1 |
AL01 |
1 |
R*4 |
1795-1796 |
|
|
2 |
AL02 |
1 |
R*4 |
1797-1798 |
|
|
3 |
15 |
1 |
R*4 |
1799-1800 |
|
|
4 |
20 |
1 |
R*4 |
1801-1802 |
|
|
5 |
29 |
1 |
R*4 |
1803-1804 |
|
|
6 |
21 |
1 |
R*4 |
1805-1806 |
|
|
7 |
22 |
1 |
R*4 |
1807-1808 |
|
|
8 |
26 |
1 |
R*4 |
1809-1810 |
|
|
9 |
30 |
1 |
R*4 |
1811-1812 |
|
|
10 |
37 |
1 |
R*4 |
1813-1814 |
46 |
N50(50,4) |
Data quality Words for R50(50,4) |
I*2 |
1815-2014 |
||
47 |
N25(25,17) |
Data quality Words for R25(25,17) |
I*2 |
2015-2439 |
||
48 |
N10(10,7) |
Data quality Words for R10(10,7) |
I*2 |
2440-2509 |
||
49 |
N5(5,31) |
Data quality Words for R5(5,31) |
I*2 |
2510-2664 |
||
50 |
N2(2,14) |
Data quality Words for R2(2,14) |
I*2 |
2665-2692 |
||
51 |
N1(10) |
Data quality Words for R1(10) |
I*2 |
2693-2702 |
Record Structure for Cruise Mode
Header Block 38 I*2 words = 76 bytes | Data Block=888 R*4 words + 888 I*2 words=5328 bytes |
TOTAL = 5404 bytes |
Explanation of Data Quality Word Contents
Explanation of I*1 Representation
Explanation of I*2 Representation
R*4 Representation
Bit Definitions for LECP Status Word 1
Bit Definitions for LECP Status Word 2
Bit Definitions for LECP Status Word 3
Bit Definitions for LECP Status Word 4
Bit Definitions for LECP Status Word 5
Bit Definitions for LECP Status Word 6
Return to Voyager LECP Data Analysis Handbook Table of
Contents.
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Last modified 8/2/05, Tizby Hunt-Ward
tizby@ftecs.com