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8. MAINTENANCE, TROUBLESHOOTING
8-11
Echo tests
Echo tests
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT
Test Description Display
Echo-1
The echo-1 test checks the echo
display function of the monitor for
proper operation, emitting artificial
scan signals in 16 colors. If
conducted with the COMBI-2 mode
active, artificial echoes are shown in
the echosounder display to test the
ES interface.
Echo-2
Echo-3
Echo-4
The echo-2 test checks the TVG
function on the PSW Board in the
transceiver unit for proper operation.
When the MENU key is pressed,
the equipment goes into start up
condition.
Note: For the CSH-8L, on the
[SONAR] menu, set [NOISE LIMITER]
to [0] and [HOR BEAMWIDTH] to
[WIDE] before conducting this test.
The echo-3 test checks the analog
multiplexer on the PSW Board in the
transceiver unit for proper operation.
This test is not available with the
CSH-8L. When the MENU key is
pressed, the equipment goes into
start up condition.
The echo-4 test checks the BMF
Board in the transceiver unit for
proper operation. This test is not
available with the CSH-8L. When the
MENU key is pressed, the equipment
goes into start up condition.
DISPLAY ECHO TEST
PRESS [MENU] KEY TO EXIT
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT