Furuno FR1500 Mk3 - Manual (Page 35)

4-3
Connection of external power supply
An external power supply is necessary when the repeater signal is step-by-step
type and the step voltage is below 20 V or output voltage is less than 5 W.
1. Cut jumper wire JP1 on the GYRO CONVERTER Board when an external
power supply is used.
2. Connect gyro cable and power cable as shown below.
Figure 4-2 Connection of external power supply to GYRO CONVERTER Board
DIP switch, jumper wire settings
Default setting
The default setting of all DIP switches is off and all jumpers wire are set to “#1.”
(Note that jumper wire JP1 is set at #1, #2, and #3.) In those settings the gyro-
compass having the following characteristics can be directly connected; modifi-
cation of the GYRO CONVERTER Board is not necessary.
AC synchronous signal: 50/60 Hz
Rotor voltage: 60 V to 135 V AC
Stator voltage: 60 V to 135 V AC
Gear ratio: 360x
Supply voltage: 30 V to 135 V AC
If the specifications of the gyrocompass differ from those mentioned above, change
jumper wire and DIP switches settings on the GYRO CONVERTER Board. Set-
tings may be changed according to gyrocompass specifications or make and
model of gyrocompass (see page 4-5). For the location of DIP switches and jumper
wires, see page 4-6.