PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2005-05-31 NOTE = " C34_TRIG_38.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 38." END_OBJECT = TEXT END Trigger 38 Description Sequence: All Trigger 38 mode The instrument is assumed to be operating in trigger 28. Starting in C26, LFDR data was added to this trigger. However, because of the V2.4 software bug, no synchronization of the LFDR data with the WBR data is done. Rather, the WBR data is stopped every 32 seconds to allow the low-band WFR data to run for ~5 seconds. With the delivery of V2.5 flight software, it will be possible to run the WBR during the low-band WFR data acquisition. However, the WBR snapshot size will be limited to 2048 samples, and DCC compression will have to be turned off. Command Byte Count: 6 Valid Command Count: 69 Receiver Frequency Range Sensor Cycle Time Snapshot Size -------- --------------- ---------------- ---------------- ------------- LFR 1Hz-25Hz EX,BX 32.000 Seconds MFR 25Hz-12KHz EW,BZ 32.000 Seconds HFR 3.6KHz-16MHz EX,EW 7.375 Seconds WBR 1KHz-80KHz EX 0.125 Seconds 2048 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 3.6-319KHz HF1 2E n y 2 n 80 1 30 50 0.325-1.825MHz HF2 1E n n 1 n 20 1 72 200 1.825-16.225MHz Bands ABC require 3.160 sec to complete, H1 requires 2.525 sec, and H2 requires 1.461 sec for a total of 7.146 sec per sweep. The hfr cycle time is 7.375 seconds.