Trigger 28 Description
Sequence: C18,...
Trigger 28 (Interplanetary Cruise with Direction-Finding)
This mode is designed to provide a low bit-rate Survey with low temporal
and spectral resolution for periods during cruise. No Wideband or Waveform
measurements are made. The entire RPWS frequency range (1 Hz - 16 MHz) is covered.
Receiver Frequency Range Sensors Time between Snapshots
-------- ---------------- ------- ----------------------
LFR 1 - 25 Hz EX, BX 32 seconds
MFR 25 - 12 KHz EX, BZ 32 seconds
HFR 3.6 KHz - 16 MHz E 64 seconds
The HFR is in direction-finding mode for the frequency range from 3.6 KHz to 2 MHz.
Thus, measurements are made on all three monopoles EU, EV and EW for Bands ABC and
Band H1, but for Band H2, only on the dipole EX.
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 32 y 1000 1 3.6-319 kHz
H1 2E y y 1 y 160 1 18 100 325k-2.0MHz
H2 1E n n 1 n 80 1 71 200 2.0M-16MHz
Bands ABC require 6.34 sec to complete, H1 requires 6.07 sec, and H2 requires 4.68 sec
for a total of 17.09 sec per sweep. However, to keep the bit rate down the HFR only
performs one complete sweep every 64 seconds.