PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM FILE_RECORDS = 1821 SPACECRAFT_NAME = "GALILEO ORBITER" INSTRUMENT_HOST_ID = GO INSTRUMENT_NAME = "PLASMA WAVE RECEIVER" INSTRUMENT_ID = PWS DESCRIPTION = "The described file, 'PWSLRCAL.TAB', contains all of the calibration information necessary for the low-rate science portions of the Galileo PWS instrument. These sections are the SA (Spectrum Analyzer), SFR (Sweep Frequency Receiver, in 4 sections), and HFR (High Frequency Receiver). The file is formatted as one long column of ASCII text floating point values, representing several tables concatenated together. The file 'pwscal.c' contains example source code for using these calibration tables. Each table is described below. CALIBRATION TABLES. Each of the following tables, indexed by raw 8-bit data number within a section, represent rough mappings to calibrated amplitudes. Further channel-specific gain multipliers are required to provide either Volts or nano-Tesla. Since all instrument noise levels are above zero data number, that value maps to floating zero to indicate missing data." OBJECT = TABLE NAME = SA_CAL ^TABLE = ("PWSLRCAL.TAB", 1) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 256 COLUMNS = 1 OBJECT = COLUMN NAME = SA_CAL_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SPECTRUM ANALYZER CALIBRATION TABLE" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFR1_CAL ^TABLE = ("PWSLRCAL.TAB", 257) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 256 COLUMNS = 1 OBJECT = COLUMN NAME = SFR1_CAL_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER 1 CAL TABLE, SFR channels 1-28" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFR2_CAL ^TABLE = ("PWSLRCAL.TAB", 513) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 256 COLUMNS = 1 OBJECT = COLUMN NAME = SFR2_CAL_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER 2 CAL TABLE, SFR channels 29-56" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFR3_CAL ROW_BYTES = 13 ^TABLE = ("PWSLRCAL.TAB", 769) INTERCHANGE_FORMAT = ASCII ROWS = 256 COLUMNS = 1 OBJECT = COLUMN NAME = SFR3_CAL_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER 3 CAL TABLE, SFR channels 57-84" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFR4_CAL ^TABLE = ("PWSLRCAL.TAB", 1025) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 256 COLUMNS = 1 OBJECT = COLUMN NAME = SFR4_CAL_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER 4 CAL TABLE, SFR channels 85-112" END_OBJECT END_OBJECT OBJECT = TABLE NAME = HFR_CAL ^TABLE = ("PWSLRCAL.TAB", 1281) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 256 COLUMNS = 1 OBJECT = COLUMN NAME = HFR_CAL_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "HIGH FREQUENCY RECEIVER CAL TABLE" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SAE_GAIN ^TABLE = ("PWSLRCAL.TAB", 1537) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 4 COLUMNS = 1 OBJECT = COLUMN NAME = SAE_GAIN_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SPECTRUM ANALYZER ELECTRIC GAIN: GAIN TABLES. This and the following 4 tables, indexed by channel number within a section, contain channel- specific gain multipliers to be applied to the results of associated calibration table mappings. These tables are given in pairs, one to yield calibrated Volts for a specific channel when connected to the electric antenna and one to yield calibrated nano-Tesla for a specific channel when the magnetic antenna is employed. However, there is no magnetic gain table for the HFR section." END_OBJECT END_OBJECT OBJECT = TABLE NAME = SAB_GAIN ^TABLE = ("PWSLRCAL.TAB", 1541) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 4 COLUMNS = 1 OBJECT = COLUMN NAME = SAB_GAIN_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SPECTRUM ANALYZER MAGNETIC GAIN" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFRE_GAIN ^TABLE = ("PWSLRCAL.TAB", 1545) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 112 COLUMNS = 1 OBJECT = COLUMN NAME = SFRE_GAIN_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER ELECTRIC GAIN All 4 sections are combined with 112 total channels" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFRB_GAIN ^TABLE = ("PWSLRCAL.TAB", 1657) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 112 COLUMNS = 1 OBJECT = COLUMN NAME = SFRB_GAIN_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER MAGNETIC GAIN All 4 sections are combined with 112 total channels" END_OBJECT END_OBJECT OBJECT = TABLE NAME = HFR_GAIN ^TABLE = ("PWSLRCAL.TAB", 1769) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 42 COLUMNS = 1 OBJECT = COLUMN NAME = HFR_GAIN_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "HIGH FREQUENCY RECEIVER ELECTRIC GAIN" END_OBJECT END_OBJECT OBJECT = TABLE NAME = SA_BW ^TABLE = ("PWSLRCAL.TAB", 1811) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 4 COLUMNS = 1 OBJECT = COLUMN NAME = SA_BW_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SPECTRUM ANALYZER BANDWIDTH SECTION BANDWIDTHS. This and the following 2 tables lists nominal noise bandwidths necessary for calculating spectral density values for each section. Note that each channel of the Spectrum Analyzer requires separate bandwidths, while each group of 28 channels of the Sweep Frequency Receiver has an associated bandwidth, and only one bandwidth is required for all 42 channels of the High Frequency Receiver." END_OBJECT END_OBJECT OBJECT = TABLE NAME = SFR_BW ^TABLE = ("PWSLRCAL.TAB", 1815) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 4 COLUMNS = 1 OBJECT = COLUMN NAME = SFR_BW_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "SWEEP FREQUENCY RECEIVER BANDWIDTH" END_OBJECT END_OBJECT OBJECT = TABLE NAME = HFR_BW ^TABLE = ("PWSLRCAL.TAB", 1819) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 1 COLUMNS = 1 OBJECT = COLUMN NAME = HFR_BW_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "HIGH FREQUENCY RECEIVER BANDWIDTH" END_OBJECT END_OBJECT OBJECT = TABLE NAME = E_LENGTH ^TABLE = ("PWSLRCAL.TAB", 1820) ROW_BYTES = 13 INTERCHANGE_FORMAT = ASCII ROWS = 1 COLUMNS = 1 OBJECT = COLUMN NAME = E_LENGTH_COLUMN BYTES = 11 START_BYTE = 1 DATA_TYPE = ASCII_REAL DESCRIPTION = "ELECTRIC ANTENNA LENGTH, EFFECTIVE ANTENNA LENGTH. The refers to the effective electric length of the PWS electric antenna in meters. This is required to calculate electric field as V/m." END_OBJECT END_OBJECT OBJECT = TABLE NAME = RELEASE_INFO ^TEXT = ("PWSLRCAL.TAB", 1821) ROW_BYTES = 60 INTERCHANGE_FORMAT = ASCII ROWS = 1 COLUMNS = 2 OBJECT = COLUMN NAME = RELEASE_DATE START_BYTE = 1 BYTES = 10 DATA_TYPE = DATE DESCRIPTION = "FILE RELEASE DATE, PDS date like yyyy-mm-dd. FILE RELEASE INFO. This is the releasedate of this version of 'pwslrcal.tab' and associated comment. It is provided at the end of the file to avoid incompatibility with older software." END_OBJECT OBJECT = COLUMN NAME = RELEASE_NOTE START_BYTE = 12 BYTES = 47 DATA_TYPE = CHARACTER DESCRIPTION = "FILE RELEASE NOTE, Free text comment completing line" END_OBJECT END_OBJECT END