Listen LT-82 - Troubleshooting

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Troubleshooting
Troubleshooting
I believe my radiator has power but none of the LEDs on the front are on.
SW1 has been turned OFF. Turn this switch to the ON position for verication of power and carrier.
My radiator is not radiating a signal.
If there is no audio at the transmitter for 30 minutes, the radiator(s) will stop radiating to conserve the
life of the radiator diodes. When the audio returns, the radiators will return to normal operation.
There is not sucient range in my system.
It may be necessary to add additional radiators to increase the coverage area. Keep in mind that one
channel on one radiator will cover up to 10,000 ft
2
(929 m
2
) line-of-sight when used with the LR-42 or
LR-44 receivers. Remember this coverage is cut in half every time the number of channels are doubled.
There is interference in my transmission.
In a multi-channel system, make sure that the transmitters are on dierent channels. Also, windows
and sunlight can cause interference and noise on the receiver.
The audio “drops out” in areas I don’t believe it should.
Audio “drop outs” can occur for several reasons, including the following:
• The system was set up by trial and error.
• With degradation of the IR diodes, the system now has dropouts due to this reduction in IR output
power from the radiator.
• Make sure to always design the system using the footprint specications found in the design
guide. Also, in a multi-radiator application, the delay switch settings may be incorrect. The
radiators could be out of phase and therefore canceling each other out.
• Make sure to set up the delay compensation switch correctly, refer to page 14 for further information.
The audio sounds distorted in my receivers.
The receiver may be approaching the edge of the coverage pattern where the distortion and noise can
be higher. Also, if the receiver is within 10 feet of the radiator it can cause the receiver to be saturated
with IR. It is a good idea to have a minimum distance of 10 feet from any radiator.
There is a tone in the audio.
Make sure the test tone button on the transmitter is OFF. Also, make sure that two transmitters are not
on the same channel in a multi-channel system.