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Do not use the RJ45 port and
Instead, plug the CAT5 cable into the RJ45 port. See Table 4 for the pin descriptions.
Use the supplied RJ45 audio input cable to connect the DCS and DA, as shown in Figure 55.
Figure 5 Connecting the DCS and DA using the RJ45 audio input cable
Optional connections:
If the audio input cable is supplied by the installation personnel, the cable must be
DA has a balanced input connection. A balanced connection is recommended to reduce AC power
interference, especially when using a long cable. For short cables that have an unbalanced
connection, the signal impedance should be less than 600 ohms.
The following steps describe connecting a balanced input connection:
Pull the input cable through the terminal protection cover, as shown in Figure6.
Figure 6
Pulling the input cable through the terminal protection cover
Strip 7 mm of the input cable and connect it to the input terminal, and then tighten the screws
to secure the wires, as shown in Figure 7. See Table 3 for port descriptions.
terminal blocks
at same time.


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