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SHIP'S POWER
Choosing a
mounting
location
490 INSTALLATION MANUAL, Revision B2
NORTHSTAR
2201 GPS
(NORTHSTAR-SUPPLIED)
POWER AND DATA
NORTHSTAR
INTERFACE
957/958
10-FOOT CABLE
(NORTHSTAR-SUPPLIED)
Figure 6: 957/958 echo sounder system components
Before any drilling or cutting takes place, carefully choose a
mounting location for the 490 that meets the following criteria:
•
where the transducer is more than four feet away from the
Northstar 961/962 or 957/958, to prevent mutual electrical
and magnetic interference
•
where the transducer cable is kept securely away from
other wires
•
where the path for running the required electrical cabling
is reasonably direct; keep in mind the different cable
lengths
•
where the 490 won't be exposed to water
SECTION THREE Installing the 490
10-FOOT CABLE
(PART OF TRANSDUCER)
NORTHSTAR
490 ECHO
SOUNDER
TRANSDUCER
RECOMMENDED:
AIRMAR B250 1000-W TRANSDUCER
FOR THE 490-D
AIRMAR B44V/B744V 600-W TRANSDUCER
FOR THE 490-S
33-FOOT CABLE
Page 15
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