Hsb 2 Connection - Raymarine DSM250 Owner's Handbook Manual

2-12
2 Connection
hsb
The DSM250 must be connected to an
plotter, or Fishfinder display unit to show echo sounder data. The
DSM250 will not work with older HSB (non-PLUS) displays.
Note: Older HSB (non-PLUS) display units must be upgraded to
before they can function with the DSM250.
An HSB cable is required to connect the sounder module to the
display unit for showing echo sounder data. A 3m (10 ft) HSB
cable is supplied with the DSM250. These cables are also available
in lengths of 1, 6, 10, and 20 m. See Table 2-1 Parts and Accesso-
ries on page 2-4 for the complete list and associated part numbers.
The HSB cable is attached to the three-pin male connector marked
HSB
on the connector panel of the sounder module. The connector
pins are shown in the following diagram; this is information is
provided as an aid to fault diagnosis.
HSB connector
Pin 1
Pin 3
Rear of Display Unit
Figure 2-7: HSB Connector
The HSB cables have ferrite clamps attached at each end to ensure
EMC conformance.
HSB connector
Pin
1
2
3
Pin 2
1
HSB
2 3
DSM250 Digital Sounder Module
PLUS Radar, Chart-
hsb
2
Pin name Function
CGND Screen
HSB_POS HSB
HSB_NEG HSB
hsb
2
D4253-4