Chapter 3  INSTALLATION OF THE DISPLAY UNIT 
3.8  CONNECTING TO THE GYRO AND ELECTROMAGNETIC LOG (NSK UNIT SETTING) 
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3.8  CONNECTING TO THE GYRO AND 
ELECTROMAGNETIC LOG (NSK UNIT 
SETTING) 
 
This section describes how to connect to NSK unit. 
 NSK unit 
Connect a gyro equipment or equivalent that provide a below turn rate. 
Otherwise, the performance of signal process and target tracking decrease. 
Standard craft  12 deg/sec 
High speed craft  20 deg/sec 
 
To connect the gyro and the electromagnetic log, use the NSK unit NCT-4106A that is 
available as an option. Although the NSK unit has been properly adjusted before 
shipment, be sure to conduct the following setting and adjustment after installing the 
unit. 
 Connecting the NSK unit 
To connect the gyro and the electromagnetic log, use the NSK unit NCT-4106A that is 
available as an option.   
Use the dedicated cable of JRC, CFQ-6998, which is included in the package, for the 
connection. This cable enables easy connection between the NCT-4106A and the display 
unit. 
The NCT-4106A includes a large-capacity external buzzer contact output (dry contact 
output) interface circuit to operate a large buzzer directly.