Xantech XT-DL-IRK Installation Manual page 13

Symptom #4:
TB LED on IR Rec. blinks but 283D or 286D 'Blink' style Emitters do not
Cause
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.
2. Emitter may be shorted internally
3 (XTRALINK Only) TV on same
splitter with no IR Receiver
installed
Symptom #5:
Intermittent IR control (I.e. buttons on remote need to be pressed multiple times)
Cause
1. Plasma Interference
2. Relatively high
levels of ambient
noise. This can be
due to any of the
following: Sunlight,
florescent Lighting
or Plasma Displays.
3. Long Wire Runs
– shielded wire typi-
cally 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.
Solution
Recheck your wiring.
Replace Emitter or use TEST EMIT-
TER to check circuit.
Place a DC Blocker (Model 203-00) on
any TV Leg without IR Receiver
Solution
Use a 85 or 95 series Plasma 'Friendly' Receiver
In this case use either a SUN filter (SUNKIT), or
any of our 'Plasma/CFL Friendly' IR Receivers
(DL85/95, HL85/95, ML85/95, WL85/95). These
can also be used in direct sunlight and in the
presence of 'tube style' fluorescent lighting.
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 connect-
ing 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 am-
plified 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.
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