CCSD3ZF0000100000001NJPL3IF0PDS200000001 = SFDU_LABEL RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 140 FILE_RECORDS = 27459 ^TABLE = "NIMSENGR.TAB" OBJECT = TABLE NAME = NIMS_ENGINEERING INTERCHANGE_FORMAT = ASCII ROWS = 27459 COLUMNS = 22 ROW_BYTES = 140 DATA_SET_ID = "GO-J-NIMS-2-EDR-V2.0" SPACECRAFT_NAME = GALILEO_ORBITER INSTRUMENT_NAME = "NEAR INFRARED MAPPING SPECTROMETER" INSTRUMENT_ID = NIMS START_TIME = 1996-144T16:03:43 STOP_TIME = 1997-047T22:54:37 NATIVE_START_TIME = '03448331.77' NATIVE_STOP_TIME = '03831841.69' NOTE = "Table containing NIMS phase 2 engineering data for the time range between START_TIME and STOP_TIME, beginning just before the first NIMS calibration observation at Jupiter and ending just after the calibration observation during the J5 conjunction orbit. This period includes Galileo's first four orbits of Jupiter (G1, G2, C3 and E4). THIS TABLE CONTAINS ONLY RAW DATA NUMBERS (DNs). Another table (NIMS_TEMPERATURES) contains the results of converting some of the items to engineering units. Due to the low data rate during phase 2, only a portion of the engineering data available during cruise could be returned. This was done via a variable commutation map so that most items could be returned, though on a staggered schedule, and so that individual items could be returned more often when needed. Usually only one or two of the engineering items were returned at any one time; the others are indicated as MISSING by a -1 in the field. E-nnnn and S-nnnn in the descriptions below are engineering data identifiers used in Galileo documentation. Detailed descriptions of these items and the algorithms used to compute their values in engineering units may be found in Galileo document 625-308. The ODL object descriptions in this label describe the data fields in each row of the table. The table is formatted so that it may be read directly into many data management systems on various host computers. All fields (columns) are separated by commas, and character fields are enclosed in double quotation marks. A carriage return/line feed sequence occupies the last two bytes of each record. This allows the table to be treated as a fixed length record file on hosts that support this file type and as a normal text file on other hosts." OBJECT = COLUMN NAME = SPACECRAFT_EVENT_TIME DATA_TYPE = CHARACTER START_BYTE = 2 BYTES = 21 FORMAT = "A21" DESCRIPTION = "Spacecraft Event Time (SCET): date and time (in ISO format) that data in record was acquired by CDS." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LLM1A_NIMS_CHECKSUM DATA_TYPE = INTEGER START_BYTE = 25 BYTES = 2 FORMAT = "Z2" MISSING_CONSTANT = -1 DESCRIPTION = "NIMS RAM software checksum returned by CDS low level module A when not overwritten by some other Galileo checksum (E-0428)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LLM1A_CHECKSUM_COUNT DATA_TYPE = INTEGER START_BYTE = 28 BYTES = 2 FORMAT = "Z2" MISSING_CONSTANT = -1 DESCRIPTION = "Count of changes in checksum returned by CDS low level module A (E-0429)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LLM1B_NIMS_CHECKSUM DATA_TYPE = INTEGER START_BYTE = 31 BYTES = 2 FORMAT = "Z2" MISSING_CONSTANT = -1 DESCRIPTION = "NIMS RAM software checksum returned by CDS low level module B when not overwritten by some other Galileo checksum (E-0928)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = LLM1B_CHECKSUM_COUNT DATA_TYPE = INTEGER START_BYTE = 34 BYTES = 2 FORMAT = "Z2" MISSING_CONSTANT = -1 DESCRIPTION = "Count of changes in checksum returned by CDS low level module B (E-0929)." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FPA_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 37 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1910) which varies with the temperature of the NIMS focal plane assembly (FPA). It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is used, together with the resistance derived from the flexprint data number (E-1916), to compute the FPA temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SHIELD_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 41 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1911) which varies with the temperature of the NIMS radiation shield assembly. It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the shield temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = TELESCOPE_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 45 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1912) which varies with the temperature of the NIMS telescope assembly. It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the telescope temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRATING_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 49 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1913) which varies with the temperature of the NIMS grating assembly. It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the grating temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = CHOPPER_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 53 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1914) which varies with the temperature of the NIMS chopper assembly. It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the chopper temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = ELECTRONICS_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 57 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1915) which varies with the temperature of the NIMS electronics assembly. It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the electronics temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FLEXPRINT_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 61 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1916) which varies with the resistance of the flexprint cable on the NIMS focal plane assembly (FPA). It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is used, together with the the resistance derived from the FPA data number (E-1910), to compute the FPA temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = RCT_PLATINUM_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 65 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1945) which varies with the temperature of the Galileo Radiometric Calibration Target (RCT). It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the RCT temperature." END_OBJECT = COLUMN OBJECT = COLUMN NAME = RCT_RESISTANCE DATA_TYPE = INTEGER START_BYTE = 69 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1947) which varies as the resistance of a known (precision) resistor that does not vary with temperature. It is used to verify the current in the determination of RCT temperature from its platinum resistor." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PCT_TEMPERATURE DATA_TYPE = INTEGER START_BYTE = 73 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (E-1948) which varies with the temperature of the Galileo Photometric Calibration Target (PCT). It measures the voltage across a platinum resistor carrying a constant current, yielding a resistance which is then used to compute the PCT temperature. This item was apparently incorrectly implemented in phase 2, and is always returned as zero." END_OBJECT = COLUMN OBJECT = COLUMN NAME = POWER_SUPPLY_CURRENT DATA_TYPE = INTEGER START_BYTE = 77 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (S-1924) which varies with the current of the NIMS power supply. It measures the voltage across a fixed resistance." END_OBJECT = COLUMN OBJECT = COLUMN NAME = MIRROR_DRIVE_CURRENT DATA_TYPE = INTEGER START_BYTE = 81 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (S-1925) which varies with the current of the NIMS mirror drive. It measures the voltage across a fixed resistance." END_OBJECT = COLUMN OBJECT = COLUMN NAME = GRATING_DRIVE_CURRENT DATA_TYPE = INTEGER START_BYTE = 85 BYTES = 3 FORMAT = "I3" MISSING_CONSTANT = -1 DESCRIPTION = "Raw data number (S-1926) which varies with the current of the NIMS grating drive. It measures the voltage across a fixed resistance." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NIMS_HARDWARE_STATUS DATA_TYPE = INTEGER START_BYTE = 89 BYTES = 2 FORMAT = "Z2" MISSING_CONSTANT = -1 DESCRIPTION = "NIMS hardware status word (S-1929). From left to right, bit 1 on indicates a hardware parity error in a command or S/C time header, bit 2 is the memory location status (0 = ROM, 1 = RAM), bits 3-4 contain the gain state (00 = gain 2, 01 = gain 4, 10 = gain 3, 11 = gain 1), bit 5 on indicates electronics calibration on, bit 6 indicates calibration lamp on, and bits 7-8 indicate chopper status (00 = on / synchronized to 63 hz, 01 = on / synchronized to reference, 10 = off, 11 = on / free run). See GLL-3-280 Rev. D, page 313." END_OBJECT = COLUMN OBJECT = COLUMN NAME = NIMS_SPACECRAFT_CLOCK_RIM DATA_TYPE = INTEGER START_BYTE = 92 BYTES = 8 FORMAT = "I8" MISSING_CONSTANT = -1 DESCRIPTION = "Spacecraft clock count RIM (3-byte integer) constructed from its two least significant bytes (picked up by CDS from the NIMS RAM and returned infrequently as items S-1931 and S-1932) and its most significant byte (known on the ground for a given orbit) to monitor operation of the NIMS RCA 1802 computer. The computed RIM value will normally be 2 less than the SPACECRAFT_CLOCK_COUNT attached to the two bytes by CDS. If it is not, the NIMS phase 2 software may be assumed to have halted, most likely due to a radiation hit, and has sent invalid data to CDS until the next software reload from CDS." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_CLOCK_COUNT DATA_TYPE = CHARACTER START_BYTE = 102 BYTES = 11 FORMAT = "A11" DESCRIPTION = "The spacecraft clock count when the NIMS engineering data of this record was picked up by CDS. It is in the form rrrrrrrr.mm, where rrrrrrrr is the RIM count and mm is the minor frame." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EARTH_RECEIVED_TIME DATA_TYPE = CHARACTER START_BYTE = 116 BYTES = 21 FORMAT = "A21" DESCRIPTION = "The Universal Time Coordinated (UTC) at which this record was received on earth." END_OBJECT = COLUMN END_OBJECT = TABLE END