DPS NetGuardian 832A, User Manual

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5. Follow the instructions that are associated with your modem model and service provider.
Important: If you are having trouble finding your modem's model number, please contact DPS support
at 559-454-1600.
6.8.4 +12 or +24 VDC Sensor Power Supply
Fig. 6.8.4.1. +12 VDC sensor power supply
You can order your NetGuardian G5 with an op12 VDC or +24 VDC sensor power supply. (See
Figure 6.8.4.1.) This provides a convenient way to connect an auxiliary sensor to a robust battery power
supply, so if AC power goes down your sensor will still be powered.. Just plug the sensor into the back
panel to use the sensor power supply.
The two-pin connector for the sensor power supply is a barrier plug connector similar to the main power
connector.
To power an external sensor, follow these steps:
1. Remove the 1/4 amp fuse from the sensor power supply on the back panel of the NetGuardian.
(See Figure 6.8.4.1.) Do not reinsert the fuse until all power connections to the external
sensor have been made.
2. Remove the power connector plug from the sensor power supply. Note that the plug can be
inserted into the power connector only one way — this ensures that the barrier plug can only be
reinserted with the correct polarity. Note that the
positive terminal is on the left and the
negative terminal is on the right .
3. Connect the appropriate leads to each of the plug's screw terminals and tighten the screws.
4. Push the power connector plug firmly back into the sensor power supply connector.
5. Reinsert the fuse to power the external sensor.