Testing The Controller-To-Repeater Receiver Interface - S-COM 6K Owner's Manual

4.

TESTING THE CONTROLLER-TO-REPEATER RECEIVER INTERFACE

Generate an RF signal on the repeater's input frequency. The controller should key the repeater
transmitter. When the signal disappears, a short courtesy beep should be heard. The transmitter
should stay keyed for a few more seconds, then it should unkey. If this does not happen, check the
wiring between the repeater receiver's COR driver and the controller's Receiver #1 COR Input.
Check the voltage on the COR line to see if it swings above and below the required threshold.
(Check the voltage with the controller and receiver connected, not just the open-circuit COR output
from the receiver).
If the repeater is acting "upside down" (unkeying when a signal exists but keying afterwards),
reverse the Receiver #1 COR dipswitch.
The default condition of the controller causes a 0.5-second delay between the loss of carrier and
the courtesy beep. The transmitter will stay keyed for an additional 3.0-second dropout delay.
These characteristics may all be changed later, so do not be concerned if this is not the way you
wish the repeater to act.
Generate a modulated RF signal on the repeater's input frequency (a service monitor is quite
helpful). Check the audio level as instructed in the Repeater Receiver Audio part of the Installation
section. Check the transmitter for proper deviation, and adjust the Transmitter Audio Output pot as
necessary.
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6K V1.02 03-16-91