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08905105A - 8 -
Symptom 6:
Emitters function but some (or all) components do not respond.
Cause: Solution
1.
Emitter placement is incorrect.
Reposition the Emitter so that it is
directly over the components sensor
window. Consult the components
owners manual of the unit for the exact
location of the IR Sensor Window.
2.
Emitter placement is correct but the signal is
overpowering the unit or there is bleed-
through from other emitters close by.
Reposition the Emitter to a position that
is suitable for the unit. Use a 283 or
286M Blink style emitter (they have a
lower output than non-blink emitters 282
and 284M). If the components do not
need to be controlled directly without an
IR Repeater system (components are
located in an equipment closet), place a
Mouse Emitter Shield cover over the
Emitter (PN#MS1). The rounded (non-
stick) side of the emitter is a hi-output
side and can reflect off other devices
and overpower some components IR
Sensors. If using a CB12 connecting
block, try a 789-44 connecting block.
This has a series resistor at the output,
which will limit current to the Emitter.
3.
Using a CFL-Friendly IR Receiver (291-80,
480-80, or 780-80) and trying to control a
unit with a carrier frequency greater then
40kHz (I.e. RCA DSS, Scientific Atlanta,
Jerald, and General Instruments Cable or
DSS Set Top Boxes).
If you are using the 291-80 or 780-80
CFL Friendly receiver, locate the Carrier
Frequency Adjustment on the unit and
using a small blade screwdriver, (3/32"
blade width max.) rotate the adjustment
for best performance of all the units in
the system. Note: The 480-80 version
does not have this feature; you will either
need to change the unit to a 291-80,
780-80 or the 490-90. The 490-90 is a
wide band unit and will not require any
frequency adjustment.