Installation Manual
44 Powering up the system
Chapter 8
Powering up the system
Attention: When you think you have the system completely wired, double check the integrity of
the wiring and ensure that the earth connection has been completed properly before
powering up.
8.1 Testing wiring integrity
Work carefully through the following steps, use a multimeter or similar tool for the electrical
measurements.
1. Check there is no electric current flow between the cables and earthing system.
• For accurate measurement, remove the extractable terminal boards from the motherboard.
2. Check there is no electric current flow between the cable shields and earthing system.
• For accurate measurement, disconnect the shields from the respective terminals by removing the
extractable terminal boards.
3. Check the wiring integrity of each NAC output.
• For accurate measurement, remove the respective extractable terminal boards from the
motherboard and measure the cable resistance. Test both polarities, at least one of them must have
the same resistance as the EOL resistance.
4. Check all cables are adequately separated, bunched (by means of cable ties) and attached firmly
to the cable hooks on the backplate.
5. Check the proper polarity of the primary power supply connections (230 Vac) and ensure the wire
is attached firmly (by means of a cable tie) to a cable hook on the back of the cabinet.
6. Check that the connected Repeater panel DIP microswitches have been properly set.
Figure 41 - DIP switch settings
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