PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 120 FILE_RECORDS = 8173 DESCRIPTION = "PKT_HDRS.TAB contains all the raw packet headers for the MET EDRs collected during the Surface phase of the mission." ^TABLE = "PKT_HDRS.TAB" DATA_SET_ID = "MPFL-M-ASIMET-2-EDR-SURF-V1.0" MISSION_NAME = "MARS PATHFINDER" INSTRUMENT_HOST_NAME = "MARS PATHFINDER LANDER" INSTRUMENT_NAME = "ATMOSPHERIC STRUCTURE INSTRUMENT / METEOROLOGY PACKAGE" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 8173 COLUMNS = 15 ROW_BYTES = 120 OBJECT = COLUMN NAME = PACKET_NUMBER DATA_TYPE = ASCII_INTEGER START_BYTE = 1 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The sequential number, within the current session, of the packet described by this record." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EXPECTED_PACKETS DATA_TYPE = ASCII_INTEGER START_BYTE = 5 BYTES = 3 FORMAT = "I3" DESCRIPTION = "The total number of expected packets for the current session." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SESSION_NUMBER DATA_TYPE = ASCII_INTEGER START_BYTE = 9 BYTES = 5 FORMAT = "I5" DESCRIPTION = "The session number of the current record." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PACKET_RECORDS DATA_TYPE = ASCII_INTEGER START_BYTE = 15 BYTES = 5 FORMAT = "I5" DESCRIPTION = "The number of physical records in the current packet; does not include the header record." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SPACECRAFT_CLOCK_START_COUNT DATA_TYPE = ASCII_REAL START_BYTE = 21 BYTES = 14 FORMAT = "F14.3" DESCRIPTION = "SCLK at the start of the current session. This is a calculated value including corrections for intermittent timing errors on packet boundaries in the telemetry data and for cases where the first packet is missing." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SESSION_DURATION DATA_TYPE = ASCII_REAL START_BYTE = 36 BYTES = 9 FORMAT = "F9.3" DESCRIPTION = "The length, in seconds, of the data-taking portion of the current session. The maximum value is equivalent to 149,130 hours. The ASI-MET electronics are autonomously powered-off at the end of the duration." END_OBJECT = COLUMN OBJECT = COLUMN NAME = DATA_TAKING_DELAY DATA_TYPE = ASCII_REAL START_BYTE = 46 BYTES = 5 FORMAT = "F5.3" DESCRIPTION = "The length of time, in seconds, between ASI-MET electronics power-on and when data-taking is to begin, for the current session. Maximum value is 8,192 seconds, or 2.27 hours. A zero value is valid. No consistency checking is performed." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SCIENCE_AVERAGING_INTERVAL DATA_TYPE = ASCII_REAL START_BYTE = 52 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The elapsed time, in seconds, between averaging the samples taken for the 12 'science' measurements. The averaged data is placed in a packet record. The Maximum value is 8,192 seconds, or 2.27 hours. An averaging interval equal to the sampling interval is permitted, hence yielding point sampled (unaveraged) measurements. An averaging interval equal to the Session Duration is also permitted. An inconsistency is indicated if the Science Averaging Interval is greater than the Session Duration." END_OBJECT = COLUMN OBJECT = COLUMN NAME = HOUSEKEEPING_AVERAGING_INT DATA_TYPE = ASCII_REAL START_BYTE = 59 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The elapsed time, in seconds, between averaging the samples taken for the 12 'housekeeping' measurements. The averaged data is placed in a packet record. Maximum value is 8,192 seconds, or 2.27 hours. An averaging interval equal to the sampling interval is permitted, hence yielding point sampled (unaveraged) measurements. An averaging interval equal to the Session Duration is also permitted. An inconsistency is indicated if the Housekeeping Averaging Interval is greater than the Session Duration." END_OBJECT = COLUMN OBJECT = COLUMN NAME = SAMPLING_INTERVAL DATA_TYPE = ASCII_REAL START_BYTE = 66 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The elapsed time, in seconds, between capturing all 24 measurements, both 'science' and 'housekeeping', for later averaging. Maximum value is 8,192 seconds, or 2.27 hours. An inconsistency is indicated if the Sampling Interval is greater than either the Science Averaging Interval or the Housekeeping Averaging Interval." END_OBJECT = COLUMN OBJECT = COLUMN NAME = WIND_SENSOR_POWER_TYPE DATA_TYPE = ASCII_INTEGER START_BYTE = 73 BYTES = 1 FORMAT = "I1" DESCRIPTION = "The operating power mode of the wind sensor. The three valid values are: 0: Low power throughout session, 1: High power throughout session, 2: Cyclic low and high power alternating throughout session, starting with low power." END_OBJECT = COLUMN OBJECT = COLUMN NAME = WIND_SENSOR_HIGH_POWER_DUR DATA_TYPE = ASCII_REAL START_BYTE = 75 BYTES = 7 FORMAT = "F7.3" DESCRIPTION = "The elapsed time, in seconds, for the wind sensor to be in high power mode before switching to low power mode. High power mode is necessary for meaningful wind measurements. This parameter is used only if Wind Sensor Power Mode specifies cyclic operation. Maximum value is 8,192 seconds, or 2.27 hours. The power switching times are with respect to the start of data-taking and may be slightly delayed due to other spacecraft activities. This potential delay is not cumulative. An inconsistency is indicated if the Wind Sensor High Power Duration is less than the Sampling Interval." END_OBJECT = COLUMN OBJECT = COLUMN NAME = WIND_SENSOR_LOW_POWER_DURATION DATA_TYPE = ASCII_REAL START_BYTE = 83 BYTES = 6 FORMAT = "F6.3" DESCRIPTION = "The elapsed time, in seconds, for the wind sensor to be in low power mode before switching to high power mode. This parameter is used only if Wind Sensor Power Mode specifies cyclic operation. Maximum value is 8,192 seconds, or 2.27 hours. The power switching times are with respect to the start of data-taking and may be slightly delayed due to other spacecraft activities. This potential delay is not cumulative. An inconsistency is indicated if the Wind Sensor Low Power Duration is less than the Sampling Interval." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PACKET_SCIENCE_SCLK DATA_TYPE = ASCII_REAL START_BYTE = 90 BYTES = 14 FORMAT = "F14.3" DESCRIPTION = "The SCLK of the first science record of the first received packet in the current session. This is a raw telemetry value which not been corrected for any timing errors." END_OBJECT = COLUMN OBJECT = COLUMN NAME = PACKET_HOUSEKEEPING_SCLK DATA_TYPE = ASCII_REAL START_BYTE = 105 BYTES = 14 FORMAT = "F14.3" DESCRIPTION = "The SCLK of the first housekeeping record of the first received packet in the current session. This is a raw telemetry value which not been corrected for any timing errors." END_OBJECT = COLUMN END_OBJECT = TABLE END