Simrad SH90 - PRODUCT DESCRIPTION REV A Specifications Page 35

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Operation of IS15 Multi
20220760L 33
3.5 Screen Group 1: Depth
There are five screens in this group:
Screen 1
DEPTH
The upper screen section displays ‘DEPTH’ and the data unit,
e.g. ‘MTRS’. An arrow indicates a rising () or falling ()
bottom. A bargraph indicates the strength of the signal. If the
depth signal is from an external source on NMEA format, an
“E” will replace the bargraph.
The lower screen section displays the water depth reading.
Note ! If the system depth transducer signal is lost, the Depth display
will flash the last good echo value for one minute, then it will
show ---. If there is an alternative depth input to the system on
NMEA format and the sounder is set to Off, this depth will be
displayed instead.
Screen 1 has two sub screens. One for switching the depth
sounder on and off and one for setting the depth damping.
Depth Sounder On / Off
In certain circumstances, e.g., to save power in known waters or
when out of depth range, you may want to turn the depth sounder
off. It is also recommended to turn it off if there is another
sounder on board operating on the same (200 kHz) frequency.
Interference between the two can thus be avoided.
Note ! When the sounder is turned off, the display will show OFF
instead of the depth reading.
Follow the instructions in Figure 3-2, page 32 to access the depth
sounder ON/OFF screen. With the ON-screen flashing select
OFF and return to Screen 1 as per instructions.
This setting is not affected by power off/on or a Communication
Reset but will default to ON after a Master Reset.
Depth damping
The displayed depth has four levels (0-3), 0 = Off. On power up
the last set damping is selected. To change the depth damping
level follow the procedure in Figure 3-2, page 32 and select the
wanted damping level.
The higher the figure the more damping.
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