13
II
N
N F
F R
R A
A R
R E
E D
D
E
E
X
X T
T E
E N
N D
D E
E R
R
-- M
M
A
A II N
N
S
S
Y
Y S
S T
T E
E M
M
U
U
N
N II T
T
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.
