Owner's Manual

TROUBLESHOOTING
This manual contains instructions for the MS120
only. For specific information on the adjustment
and operation of your Niles infrared extender
system, please refer to the instruction manual
included with your Niles IR main system unit
(MSU140, MSU250, MSU480 MSU440Z).
,. Test the remote control(s) by operating the
AN equipment directly. Replace the batteries
if needed.
2. Double check the cable connections on the
MS120 and on the main system unit. Look for
open, shorted or reversed wires.
3. Test for interference from the following
sources:
• Neon, Compact Florescent Lighting (CFL), or
halogen lights in the room
• Light dimmers, beginning with those closest
to the MS120
Observe the main system unit IR confirmation
LED while performing all the tests. It is possible
to have interference from more than one source.
Eliminating Optical Feedback
In some installations, two conditions combine to
create an optical feedback loop. Symptoms can
include: poor range, intermittent operation or no
operation.
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The conditions which sometimes combine to
create a feedback loop are:
1. Both a sensor and a flasher are located within
the same room.
2. There is some low-level noise or interference
on your system.
You can eliminate optical feedback by replacing
any IRB1 "flooding flasher" with an MF1 or MF2
MicroFlasher@ and covering all flashers with the
supplied IR blocking covers.
EMI (Electromagnetic Interference)
Identify the source of the interference. The most
common sources of electromagnetic interference
are listed in the Installation Considerations
section. 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).
There are many methods for reducing
interference. Which solution is best for you
depends on your situation. If you require further
assistance call Niles Technical Support at
305-238-4373 or 1-800-289-4434
(M-F 8:00 AM - 7:00PM ET).
You can also email Niles Technical Support at
[e-mail].
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