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08905105A - 7 -
Symptom #4:
TB LED on IR Rec. blinks but 283M or 286M 'Blink' style Emitters do not
Cause: Solution
1.
There may be a short, such as a staple
driven through the Signal and GND wires of
the IR Receiver and/or the emitter.
Recheck your wiring.
2.
Emitter may be shorted internally
Replace Emitter or use TEST EMITTER
to check circuit.
3
(XTRALINK Only) TV on same splitter with
no IR Receiver installed
Place a DC Blocker (Model 203-00) on
any TV Leg without IR Receiver
Symptom #5:
Intermittent IR control (I.e. buttons on remote need to be pressed multiple times)
Cause: Solution
1.
Plasma Interference Use a 490-90 Plasma 'Friendly' Receiver
2.
Relatively high levels of ambient noise.
This can be due to any of the following:
Sunlight, florescent Lighting or Plasma
Displays.
In this case use either a SUN filter
(SUN480, SUN490, SUN780), or any of
our ‘CFL Friendly’ IR Receivers (291-80,
480-80, 780-80). For Plasma
Interference use the 490-90 or 780-90
‘Plasma Friendly’ IR Receivers. These
can also be used in direct sunlight and in
the presence of ‘tube style’ florescent
lighting.
3.
Long Wire Runs – shielded wire typically of
100 feet (30 meters) or longer causes a filter
effect due to accumulated capacitance of the
wire. Intermittent, or no IR control, could
actually be because of the longer wire runs.
Putting a 470-ohm resistor in parallel at
the connecting block between signal and
ground will effectively discharge the
capacitance of the wire. This will allow
the signal to travel farther on shielded
wire. Adding a resistor between the
input and ground of the connecting block
will drop the IR level down somewhat.
Passive connecting blocks, such as the
789-44, may not have enough signal
output for consistent control of the
equipment. You may have to upgrade to
an amplified connecting block to bring
the IR level back to normal. In these
cases, the 791-44 would be an ideal
connecting block for single zone
systems while the 795-20 would work
best for a 2-4 zone system.