Specifications
INSTALLATION & SETUP • CONNECTING A COMMAND RELAY UNIT
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2. Connect the Command Relay Unit to the I/O unit using the
provided DB37 cable. Two pins on the DB37 connector are
used to power the Command Relay unit. When your GSC or
VRC unit is powered up, verify that both power LEDs on the
back panel of the Command Relay unit are green, indicating
5VDC power.
Connecting Site Equipment to the VRC Unit Using a Command Relay Unit










