NorthStar Echo Sounder 491 Operation Manual page 10

GPS
antenna
33-foot cable
(part of transducer)
491
module
957/958/6000i
Navigator
10-foot cable
Ship's
Transducer
(Northstar-supplied)
Power
10-foot cable
(Northstar-supplied)
Figure 1: 957/958 echo sounder system components
GPS
antenna
Control
Head
33-foot cable
(part of transducer)
491
module
961/962
Processor
10-foot cable
Ship's
Transducer
(Northstar-supplied)
Power
10-foot cable
(Northstar-supplied)
Figure 2: 961/962 echo sounder system components
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491 Echo Sounder Operations Manual