Trigger 74 Description

Sequence: C14 (Venus-2) (ESB)
Trigger 74 (Venus-2 Observation Setup)
This mode is a modification of the Venus-1 observations. The HFR is allowed to free run,
and the HFR data is NOT compressed. LFR, MFR, and WFR data are also collected, resulting in the
entire RPWS frequency range (1 Hz - 16 MHz) to be covered.
Trigger 74 is intended to be used to start the Venus observation, then Triggers 78, 7A, and 7C
may be used to move through the desired configurations. Trigger 78 may subsequently be used to re-enter the
mode initiated by trigger 74 without incurring the long setup time.

Receiver	Frequency Range	Sensors	Time between Snapshots
LFR	1 - 25 Hz	EX, BX	16 seconds
MFR	25 - 12 KHz	EX, BZ	32 seconds
WFR	.1 - 2.5 KHz	EX, EW, BX, BY, BZ	342 seconds
HFR	3.6 KHz - 16 MHz	EX	32 seconds

The HFR is in a special Venus-2 Lightning Scan mode.

This mode is defined by:

          Correlations     Channels        Integ.                Size Frequency
Band Ant. Auto-  Cross-    per Band   df   Period    Rep   Steps kHz  Start - Stop
---- ---- -----  ------    --------   --   ------    ---   ----- ---- ------------
ABC  1E     n      n          32       n    125       1                3.6-319 kHz
H1   1E     n      n           1       n     20       1     12    350  125k-3.975MHz
H2   1E     n      n           1       n     10       1      8   1500  5.475M-15.975MHz

The HFR is free-running, resulting in:
Bands ABC require 0.242 sec to complete, H1 requires 0.242 sec, and H2 requires 0.098 sec for a total of 2.33 sec per sweep. However, the HFR actually only performs one complete sweep every 2.5 seconds.