8. MAINTENANCE, TROUBLESHOOTING
8-12
Echo tests
DISPLAY ECHO TEST
PRESS [MENU] KEY TO EXIT
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT
TRX ECHO TEST
PRESS [MENU] KEY TO EXIT
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 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.
Echo-3 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.
Echo-4 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.
Echo tests
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