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I
NFRARED
M
AIN
S
YSTEM
U
NIT
Solution: To eliminate EMI try the following methods:
1. Move the sensor or the sensor cable away from the EMI
source or move the source of the EMI away from the
sensor or the cable.
2. Connect the Sensor’s GND terminal to true earth
ground (if this isn’t feasible use the main system unit’s
GND terminal).
3.– 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.
Solution: You can eliminate optical feedback by covering
all flashers with the supplied IR blocking covers.
There are many methods for reducing interference. Which
solution is best for you depends on your situation. If you
require further assistance contact Niles Technical Support
at 1-800-289-4434.
DS00329BCN-MSU140-1.qxp 8/17/05 11:26 AM Page 16