Data Sheet

VR31 “master” or inside
VR131 remote/outside
Safety-Comm.
®
Field Calibration
Symptom: conversation is “clipped”; conversations are cut short.
Solution: FIRST: NOTE ORIGINAL POSITION OF THE POTENTIOMETERS.
if inside operator’s (IO)conversation is clipped, increase IO’s microphone
sensitivity by turning R31 one (1) notch clockwise.
if outside operator’s (OO) conversation is clipped, increase OO’s microphone
sensitivity by turning R131 one (1) notch clockwise.
Repeat if necessary.
NOTE: R31 and R131 are “balanced”. Therefore, decreasing one microphone
will have the same effect as increasing the other (it’s all relative).
The control assembly must be placed back into the housing to perform
correctly. Otherwise, feedback may occur.
“Inside Operator”: gooseneck side (SC-100; SC-300); or circuit board side.
VR26 if adjusted clockwise, will allow the gooseneck/master side mic to
dominate the outside microphone. If increased too much, the outside/remote
will not be heard at all. Default position is at the 10:00 position
Questions?
Call: [phone]
NOTE: set volume control knobs to “3:00”
postition before beginning.
VR26 gooseneck dominance.
DO NOT ADJUST! CONSULT THE
FACTORY PRIOR TO ADJUST-
MENT.