PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM DATA_SET_ID = {"CO-V/E/J/S/SS-RPWS-4-SUMM-KEY60S-V1.0", "CO-V/E/J/S/SS-RPWS-2-REFDR-ALL-V1.0", "CO-V/E/J/S/SS-RPWS-3-RDR-LRFULL-V1.0", "CO-V/E/J/S/SS-RPWS-2-REFDR-WBRFULL-V1.0", "CO-V/E/J/S/SS-RPWS-2-REFDR-WFRFULL-V1.0"} PRODUCT_ID = "C11_TRIG_14" PRODUCT_VERSION_ID = "1.00" PRODUCT_TYPE = ANCILLARY INSTRUMENT_HOST_NAME = "CASSINI ORBITER" INSTRUMENT_HOST_ID = CO INSTRUMENT_NAME = "RADIO AND PLASMA WAVE SCIENCE" INSTRUMENT_ID = RPWS OBJECT = TEXT PUBLICATION_DATE = 2005-03-17 NOTE = " TRIG_14.TXT describes the RPWS instrument configuration for the High Frequency Receiver (HFR), the Medium Frequency Receiver (MFR), the Low Frequency Receiver (LFR), the Waveform Receiver (WFR), the Wideband Receiver (WBR), the Langmuir Probe (LP), the Sounder, and the onboard Dust detection algorithm when using Trigger 14." END_OBJECT = TEXT END Trigger 14 Description Sequence: All Trigger 14 (LF-WBR Mode) This mode is designed to provide a Survey mode, coupled with Low Frequency Wideband (LF-WBR) measurements. The LF-WBR measurements are done using the WFR in single channel mode; the data is DCC-compressed (using the onboard data compression chip), and because of this, the gain is set to be fixed at 30 dB. Periodic 6-channel Waveform measurements are made also. The entire RPWS frequency range (1 Hz - 16 MHz) is NOT covered, because the LFR data must be deleted to provide the LF-WBR data. Langmuir Probe data is also provided at a high rate; a sweep is done every 10 seconds, and between sweeps a 128-point density measurement is done at a 20 Hz sampling rate. Receiver Frequency Range Sensors Cycle Time Snapshot Size -------- ---------------- ------------------ ------------- ------------- MFR 25 - 12 KHz EX, BZ 32 seconds WFR .05 - 2.5 KHz EX, EW, BX, BY, BZ 341 seconds 512 HFR 3.6 KHz - 16 MHz EX, EW 9.875 seconds WFR .05 - 2.5 KHz EX 1.5 seconds 10240 LP N/A Langmuir Probe 10 seconds The HFR is in CMS mode (Composite Mode Survey). No direction-finding is done. This mode is defined by: Correlations Channels Integ. Size Frequency Band Ant. Auto- Cross- per Band df Period Rep Steps kHz Start - Stop ---- ---- ----- ------ -------- -- ------ --- ----- ---- ------------ ABC 2E y y 16 n 1000 1 3.6-319 kHz H1 2E n y 2 n 80 1 60 25 325k-1.8MHz H2 1E n n 1 n 20 1 72 200 1.8M-16MHz Bands ABC require 3.16 sec to complete, H1 requires 5.05 sec, and H2 requires 1.46 sec for a total of 9.67 sec per sweep. Data collection and output limits the snapshot time to 9.875 seconds.