Depth Offset - Raymarine DSM250 Owner's Handbook Manual

Chapter 4: System Setup

Depth Offset

This is not an issue when showing DSM250 data on a radar or
chart display because these units can never be a sonar master. In
this case, the DSM250 is automatically set as the master and the
display unit as the repeater. In fact, the MASTER selection is grayed
out when the sounder module is connected to a PLUS radar or chart
display.
However, if the display unit is a PLUS fishfinder, you are given a
choice. You must set the fishfinder display to REPEATER so that
there is no conflict on the
designated as a master). You would only select MASTER when you
want to control the PLUS fishfinder display rather than the
DSM250. In this case, the fishfinder display unit must have its
own transducer connected and the DSM250 must be powered off
or have its HSB cable disconnected (thus removing it from the
2 network).
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Note: If you switch the PLUS fishfinder display from REPEATER to
MASTER, you must remove the DSM250 from the
power off & on the display unit for the changes to take effect.
Summary
1. When the display is a PLUS radar or chart unit, you can ignore
this parameter; the REPEATER setting is made for you automati-
cally.
2. When the display is a PLUS fishfinder and you are using the
DSM250, select REPEATER.
3. When the display is a PLUS fishfinder and you want the display to
show its own sonar data rather than that of the DSM250, select
MASTER. In this scenario, the DSM250 must be powered off or be
physically removed from the
The depth offset is added to the measured depth value before it is
displayed. You can specify the depth as a positive value (WATER-
LINE OFFSET) or a negative value (KEEL OFFSET). The depth offset
can be set adjusted in 0.1 increments of the units you have
assigned for Depth Units in the setup parameters of the display
unit: meters, fathoms, or feet.
hsb 2 network (the DSM250 is always
2 network.
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4-15
2 network and
hsb