5
Music
An unbalanced, high-impedance auxiliary input is provided. Make connections to
terminals marked MUSIC and GND.
Paging
A balanced transformer-isolated input for a telephone line is provided. One 600-
ohm telephone line may be connected at the terminals marked TIP and RING. If
two-conductor shielded wire is used, connect the shield to the GND terminal.
Night Ringer
A ringing tone can be transmitted through the public address system by shorting the
NIGHT RINGER and GND terminals on the TPU
1
5A amplifier through a pair of
normally open dry contacts (which are customer supplied). A steady ringing tone
will be heard as long as the dry contacts are closed.
Power
Once connection has been made to a
1
20V ~, 60 Hz power source, the TPU
1
5A
will remain in a power standby condition. (Also see Circuit Breaker information.)
Speakers
The unit provides 8-ohm, 25V, and 70V transformer-coupled outputs, balanced or
unbalanced. Connect the system speaker to the output terminals, with one lead to
the COM terminal and the other to the terminal which corresponds to the
impedance of the speaker system.
Paging
The PAGE VOL screwdriver-adjustable control is used to adjust the volume of the
page input. Rotate the control clockwise to increase volume and counter-clockwise
to decrease it. Set the control to minimum if the input is not used.
Night Ringer Control
The NIGHT RINGER VOL is screwdriver-adjustable through the top of the unit. Rotate
the control clockwise to increase volume and counter-clockwise to decrease it.
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Front Panel
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