Document: 990-0000046-1000
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7.4.2
P
RE
-D
EPLOYMENT
R
UB
T
EST
Test
Possible Trouble Area(s)
Perform the following test sequence to verify
array switching logic and receiver hardware.
These tests require operation from a system
running the EdgeTech ‘Discover’ sonar-
processing software.
1.
High-Frequency Test:
Set system to HDM mode, Set
Discover Range to 100m. and on-
screen Gain to 40-50dB
Rub the AFT Arrays and confirm
noise on sonar screen
Rub the FWD Arrays and confirm
no
noise on sonar screen
Set system to HSM mode and repeat
rub test as above.
High-frequency transducer elements
T/R Switch board
SSB board
2.
Low-Frequency Test:
Set system to HDM mode, Set
Discover Range to 100m and on-
screen Gain to 40-50dB
Rub the AFT Arrays and confirm
noise on sonar screen
Rub the FWD Arrays and confirm
noise on sonar screen
Set system to HSM mode and repeat
rub test with above settings
Rub the AFT Arrays and confirm
noise on sonar screen
Rub the FWD Arrays and confirm
no
noise on sonar screen
Low-frequency transducer elements
T/R Switch board
SSB board
