Trigger 74 Description

Sequence: All
Trigger 74 (HF-WBR Interference Test)

These triggers cycle through 4 frequency steps in HF-WBR mode, in order to investigate the interference line seen at 125 KHz. The trigger set-up is similar to Trigger 36, with an initial HF-WBR frequency of 125 KHz. Then each step of the sequence changes the frequency and dwells for a minute. Finally Trigger 28 is invoked.

Receiver  Frequency Range       Sensor          Cycle Time     Snapshot Size
--------  ---------------  ----------------  ----------------  -------------
MFR       25Hz-12KHz       EX,BZ               32.000 Seconds
Millisec  125.000KHz       EX                   0.000 Seconds      2048
Millisec  150.000KHz       EX                   2.500 Seconds      2048
Millisec  175.000KHz       EX                   2.500 Seconds      2048
Millisec  200.000KHz       EX                   2.500 Seconds      2048
WBR       1KHz-80KHz       HF                   0.500 Seconds      4096


          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.