
CVR–010
User–Level Trouble Shooting
73
11.4.
Bottom Echo Appearance
(continued – 2/2)
Most echoes are visible in strong
colors.
Most of the echoes remain in strong colors
regardless of gain and TVG adjustments.
・
Symptom indicates that small echo dynamic
range is selected. Check current setting
via path
(
MAIN MENU
→
9:INSTALLATION
SETTINGS
→
3:DYNAMIC RANGE
)
(
ref.
paragraph 8.10.4
).
・
Select
5 dB
or
6 dB
, if other value is
currently selected.
11.5. Alarms
Symptom
Suggested Solution
Unable to remotely confirm alarm
status or acknowledge active alarm
from INS terminal.
1. Check unit's current alarm handling protocol
matches BAM protocol in your INS terminal,
via instructions in paragraph 9.7.
2. Initializing system returns alarm handling
protocol to IEC 61162–1 ALF, ACN type.
Bottom–missing alarm is on at all
times.
The bottom–missing alarm is triggered
and no depth readout is available
regardless of the presence of the bottom
echo
.
Symptom indicates that bottom echo is
displayed in weak colors.
1. Activate automatic control
(
AUTO
)
mode by
pressing
, if unit is currently in manual
control
(
MANUAL
)
mode.
2. If you wish to continue
MANUAL
mode
operation, increase the receiver gain by
pressing
first, followed by
.
Bottom–missing alarm remains
inactive at all times.
The bottom–missing alarm does not get
activated regardless of the absence of the
bottom echo
.
・
Bottom–missing alarm is initially disabled.
・
To enable it, see paragraph 8.12 for
instructions.
・
Function is not available if alarm handling
protocol is set to IEC 61162–1 Ed. 5
standard (default setting).
Unable to set depth alarm
The alarm depth cannot be set at a new
VRM position
.
After shifting VRM to new position, press
(ref. paragraph 7.8.3)
.
11.6. Soundings
Data
History
Window
Symptom
Suggested Solution
Soundings data HISTORY window is
not updated.
The various data showing in the HISTORY
window are not updated.
・
HISTORY
window is designed to show past
12 hours of data from moment
is
pressed.
・
Data shown in window are not updated
automatically, though current data are
continuously stored in memory.
・
To update displayed data, turn window off
by pressing
and then turn it on by
pressing
(ref. paragraph 7.7)
.
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