Q t 1 0 0 I N S T A L L A T I O N & O P E R A T I O N S G U I D E
5
Connections to the Front Panel
Connect Paging or Music
NOTE:
The fixed terminal block can be removed for ease of connecting.
Contact Closure
The Qt 100 provides an instant shut-off capability for masking if
connected to a contact closure interface. The contact closure utilizes the
same connector as the audio input. To leverage this feature, connect a
two-conductor cable to the two connectors, labeled “contact”. The other
end of these conductors (treated as pairs/circuits) can be terminated on
closure mechanisms of choice.
1.
To shut off masking, form a connection between the two
conductors.
2.
To resume masking, break the connection.
Balanced Audio Input: (Most often, but not always
characteristic of paging systems.) Connect signal
wires to + and - at the input. Connect the shield to
GND at the audio source.
Unbalanced Audio Input: (Typical of music systems.)
a.
Mono Signals: Connect the mono signal wire
to both L and R (split the wire) on the block.
Connect the ground wire to GND.
b.
Stereo Signals: Connect the respective signal
wires to L and R on the block. Connect the
ground wire to GND.
