Trigger 78 Description
Sequence: C14 (Venus-2) (ESB)
Trigger 78 (Venus-2 Observation Continuation)
This mode allows the instrument to re-enter the mode initiated by Trigger 74 without the
setup time of Trigger 74. This trigger must only be sent after Trigger 74, and has the same
instrument settings as Trigger 74. 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.
| 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 y n 32 n 125 1 3.6 kHz-319 kHz
H1 1E n n 1 n 20 1 12 350 125 kHz-3.975 MHz
H2 1E n n 1 n 10 1 8 1500 5.47 5MHz-15.975 MHz
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.