Specifications

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OVERVIEW • CONTROLS & CONNECTIONS
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VRC2500, Rear View
Power The VRC2500 accommodates power from
100 - 240VAC at 50/60Hz.
Full-Time Serial connection for full-time data connection
such as a four-wire modem.
Direct Serial connection for direct connection to PC.
Also used for firmware upgrades.
Metering Analog inputs with range of 0 to +10VDC and
-5 to +5VDC.
Status Binary inputs with range of -30 to +30VDC with
CMOS/TTL thresholds.
Command Open collector A/B output channels 1 through 8
1-8 can sink 250mA at 30VDC.
Command Open collector A/B output channels 9 through 16
9-16 can sink 250mA at 30VDC.
Set/Modem RJ-11 connector for modem or telephone set.
Line RJ-11 connector for on-site telephone line.
Audio Out Audio from the telephone line can be routed to
this output for possible use as emergency audio
feed to transmitter.
Audio In Allows external audio (such as off-air monitor) to
be fed to the phone line.
Dial-Up Serial connection for external dial-up modem.
Also used when upgrading voice firmware.