Trigger 28 Description

Sequence: C29, C30, C31
Trigger 28 (Interplanetary Cruise & Dust & LP Sweeps but without 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.
Starting in C29, the 3-axis direction-finding mode was removed from the HFR
and instead, the sensor was changed to the dipole to increase sensitivity
in an effort to detect Saturn emissions. The duty cycle of the HFR was also
increased from once every 64 seconds to every 32 seconds.

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       EX, EW    32 seconds
  LP               N/A                  LP              8128 seconds

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   y         y         1       n    160       1     18    100  325k-2.0MHz
H2   2E   y         y         1       n    80        1     71    200  2.0M-16MHz

Bands ABC require 3.16 sec to complete, H1 requires 3.16 sec, and H2 requires 6.00 sec
for a total of 12.32 sec per sweep. However, to keep the bit rate down the HFR only
performs one complete sweep every 32 seconds.

Starting in C26, dust detection using the EZ sensor was added, and
also periodic Langmuir Probe sweeps every 8128 seconds.