CAMBRIDGE QT Specifications download pdf (Page 3)

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• To connect an unbalanced (single-ended) paging

signal, connect the signal wire to + and connect the

ground wire to both – and GND, using a shunt wire

between – and GND.

IMPORTANT: When installing cables for Zone 1 (con-

nectors on the door), leave sufﬁcient length so that the

front door can be fully opened with cables securely

tied to the door. Measure with the door fully open.

• If a network attachment is made, conﬁrm that a

connection is made. To do this, advance to the IP

Address screen on the front panel. If a network

connection has been made, the assigned IP

address will be displayed, usually within two (2)

minutes of powering the unit. If the IP Address

continues to read zero, contact the local network

administrator.

INSTALLATION PROCEDURE

EMITTERS

IMPORTANT: Before installing emitters, plug in control

unit and power it on to full volume for all zones. As

you connect emitters, listen to each one as it is added

to the chain. Ensure that you have a valid connection.

If you still cannot hear the emitter, try another emit-

ter. If you still cannot hear the emitter, test the cable

to ensure that no wires have been faulted. If a wire is

shorted, the masking volume is likely to turn off. Re-

pair the faulty wire. The short should clear itself after

approximately ﬁve (5) minutes. If not, power cycle the

unit. Fix any issues before moving on to the next emit-

ter. If necessary, see “ERRORS” section beginning on

page 13.

If custom cables are required, follow instructions in

Guidelines for Custom Cabling section on page 12.

Front panel interface

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CAMBRIDGE QT Specifications Page 3