Federal Signal Corporation ultravoice UV, Installation, Operation And Service Manual

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Maintenance
Installation, Operation, and Service Manual
2. TX adjustment (If one way communication, then skip this step)
• Simultaneously press buttons 5 and 7 on the UV+ controller card. This causes
the controller to transmit for approximately 8 seconds.
• Determine proper siren TX level required: Nominal UV TX level is 1 V
p-p
. The
TX levels for all of the siren controllers must be the same. Once you adjust
one siren TX level, adjust all other sirens to the same level. Measure at the
base station.
• Adjust the TX level (UV+ controller card front panel) for the correct level
determined above.
• Ensure tone is not clipped or distorted by viewing waveform with
oscilloscope.
600-ohm Adjustment Procedure for External Audio Source Input
To use the 600 ohm input for external audio, at JP6, place a jumper across pins 1 and 2.
JP6 is located internally on the main controller card.
Audio source adjustment for external audio source.
• Transmit a tone from the external audio source.
• Ensure tone is not clipped or distorted by viewing waveform with an oscilloscope.
• Nominal external audio source level is 1 V
p-p
.
• If required adjust the external audio source.
Audio source adjustment for UV controller.
• Transmit a tone from the external audio source.
• Contact closure at JP15 pins 10 and 11 (PTT: Push To Talk) is required to activate
audio mode.
• Adjust the level using the external audio gain adjustment R123. (R123 is located
on the UV+ controller card. See Figure 2.)
• Preferred method of setting this level is to use a dB meter or by ear.
• Activate siren through external audio source.
• Set for same level as the standard siren sounds.
• Ensure that the sound is not distorted.