13
II
NN FF RR AA RR EE DD
EE
XX TT EE NN DD EE RR
-- MM
AA II NN
SS
YY SS TT EE MM
UU
NN II TT
Optical Feedback Loop
If you have an IR sensor in the same room as a flasher, and you have
some low-level noise or interference, an optical feedback loop can
occur which will interfere with proper operation. Symptoms can
include: poor range, intermittent operation or no operation.
Steps
•
19
through
•
22
provide instructions for eliminating optical
feedback loops.
Start from Step One
In your installation you may be faced with a combination of the four
problems or symptoms that are universal to all of the problems.
Rather than trying to guess which problem you have, use a process of
elimination. The Troubleshooting section is designed to eliminate the
most common problems first. If you start from Step 1 and methodical-
ly check everything you will find the problem in much less time than
the troubleshooter who makes assumptions.
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