36
Installation
UltraVoice Remote Interface (UVRI-B)
The battery supply wires are attached to the battery at the factory and the unit is shipped
with the battery supply wires disconnected from the control board at JP36. Wait until all
other wiring connections are made and refer to the Turning on the Power section before
making the connection at JP36.
Speaker Connections (JP2 on the Amplifier board)
The output voltage is 28.3 V
rms
to drive up to 100 W into an 8 Ohm load.
If using distributed speakers, the speakers must be capacitively coupled and connected
sequentially with a 2 Watt, 2.7 K end of line terminating resistor.
Local PA Audio Connections (J1 on the UVRI-B Control board)
For local PA, plug the optional microphone (part number: MNC-MC) into the 1/4 inch
jack (J1) on the UVRI-B control board. Mount the microphone on the microphone clip
located on the access panel. (See Figure 1.) Use R3 on the control board for microphone
level control.
The UVRI-B also has remote volume control for optimizing sound levels across your
alerting area. The remote volume control also includes an ambient noise monitoring
capability to automatically adjust volume depending on external noise levels. Use the
recommended microphone (X-SM1-FS1) to monitor noise levels and automatically adjust
the volume. The X-SM1-FS1 is a weather resistant omni-directional microphone for use
with the UVRI-B controller. Mount the microphone in a standard ½-inch electrical knock
out or ½-inch drilled hole in the UVRI-B cabinet or where the noise is needed to be
measured. The microphone has a 6 foot cord for connecting to the UVRI-B controller.
Remote Activation Contact Closure Inputs (JP22 on the UVRI-B Control
board)
Connect any desired remote contact closure inputs to the remote control inputs at JP22 on
the UVRI-B control board. Activating the input requires a connection of less than 2,000
Ohms from pins 1 or 10 to one of the Function inputs on pins 2 through 9 for functions 1
through 8 respectively.
Optional External 24 VDC Power Connections (JP23 on the UVRI-B Control
board)
External 20 to 28 Vdc can be connected to JP23 with the (+) connected to pin #1 and the
(-) to pin #4. The unit may draw up to 7 Amps at full power. Contact Federal Signal for
information regarding 24 Vdc use.
