Raymarine DSM250, Owner'S Handbook Manual

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3-2 DSM250 Digital Sounder Module
3.3 Updating Software on the Display Unit
Before it can show sonar data received from the DSM250, the dis-
play unit must be running a software version that recognizes the
sounder module on the
hsb 2
network. The DSM250 contains a pro-
gram routine that automatically polls the software version running
on the display unit and if necessary, updates it (via
hsb 2
) to be
compatible with the DSM250.
➤
To automatically check and update the display unit software version:
1. Ensure both the DSM250 and display unit are powered off.
2. Ensure the HSB cable is properly connected between the units.
3. Disconnect the transducer cable from the DSM250. (This is
essential.)
4. Power on the DSM250.
5. Within 30 seconds of powering on the DSM250, power on the dis-
play unit.
If running an older version, the display software is updated and the
unit beeps. When the software update is complete (or if no update
is required), the normal startup screen appears on the display.
6. Power off the DSM250 and reconnect the transducer.
7. Power on the DSM250.
3.4 Selecting Repeater Mode
Depth data that is to be shared over the
hsb
2 network is sourced
from the device that has been designated as the master sonar unit.
Only a DSM250 or an
hsb 2 PLUS fishfinder display can be a mas-
ter unit. For the DSM250 master to repeat its sonar image data to
a display unit, the display must be designated as the
REPEATER
.
When using the DSM250 with a PLUS radar or chartplotter dis-
play, this is not an issue—the DSM250 is automatically set as the
master and the display unit the repeater. However, the DSM250
can also repeat its image data on a fishfinder display. In this case,
both units are capable of collecting sonar data so you must tell the
display it is to be a repeater for the DSM250 and not a master unit
on its own.
If your DSM250 is repeating its sonar data over a PLUS radar or
chartplotter display, the proper settings are made automatically.
You need do nothing else.