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Other Connections
Night Ringer
The UTI1 night ringer signaling feature is designed to alert personnel to incoming
calls after normal business hours.The feature is activated by a contact closure from
the PBX.
The night ringer normally sounds a simulated ring tone, but can be programmed
to sound a chime tone.
To physically connect the night ringer wiring:
1. Make sure that the power is disconnected.
2. Wire the contact closure used for night ring to the NTR (+5V) and C
terminals on the UTI1. Maximum contact resistance for contact closure
activation is 1000 ohms. Open collector type outputs for controlling a page
may also be used.
Note: The Night Ring feature has priority just above background music.There is a 5-second
delay after the night ring stops before background music is restored (bridges inter-ring pause).
Tone Trigger
The UTI1 tone trigger input is typically used to signal shift changes using a contact
closure pair from an external master clock or as a doorbell annunciator.The tone
type is programmable. This is set in programming. Refer to System Programming
section.
To physically connect the tone trigger wiring:
1. Make sure that the power is disconnected.
2. Wire the contact closure used for tone trigger to the TN (+5V) and C
terminals on the UTI1. Maximum contact resistance for contact closure
activation is 1000 ohms. Open collector type outputs for controlling a page
may also be used.
Paging Output Connections
There are two paging outputs on the UTI1. One output supplies both paging and
background music, while the other supplies only paging. The paging outputs are
intended to connect to amplified speakers, but are also compatible with amplifier
inputs as well.The Tip (T) and Ring (R) connections are transformer-isolated audio
outputs with an output impedance of 8 ohms. Connect these to the audio inputs
of the amplified speakers for driving up to 150 speaker inputs. The + and -
terminals provide 24V DC for powering the amplified speakers. The UTI1 can
supply a total of 1A @ 24V DC.
Background Music Input
The UTI1 system provides a high-impedance, transformer-isolated summed stereo
background music input. Mono sources can be connected to either RCA.
AUX Contacts
The UTI1 system provides a dual form contact rated at 2A @ 30V DC and 0.6A
@ 125V AC, which can be used to activate external equipment.The relay can be
programmed to change state when specific events or combination of events (time
tone, override, night ring, paging) occur. Refer to the System Programming section.