Power Supply - Andrew Node C837 User Manual

5 Functional Description
5.3.7

Power Supply

The power supply, which is mounted in the Interface Unit, transforms AC mains
power into a predefined DC voltage. When performing maintenance, ensure that all
circuits are voltage-free and that the Node C is disconnected from mains.
The Node C may be equipped with a second power supply for redundancy.
5.4 OPTIONAL EQUIPMENT
The actual configuration can be seen at the configuration list*, which is part of the
delivery.
* To be replaced by an electronic list that will be accessible via software.
5.4.1 Modem with Battery Backup
The modem is used to establish a remote connection to the Node C. The connection
may be used to change the unit's parameters, check and clear alarms or collect
measurement and quality statistics.
Furthermore, the modem is at the Node C's request to alert the operator when there
is an alarm. The modem may be over-the-air (wireless) or PSTN. It is possible to
install the wireless modem or the PSTN modem on site.
ID No: 161692
figure 5-16 Power supply
PRELIMINARY Page 83