LRAD
1950XL
GENASYS INC.
Manual Part No.:114931-00 rev. B
26
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Power down the Amplifier Module for ten to fifteen minutes and power on again to see
if a temporary fault will be cleared.
7.4.3 Symptom: Clipping LED is illuminated on Amplifier Module.
The clipping LED illuminates when the input signal from the microphone or MP3 player is too
high. As a result of this excess signal, the output from the LRAD will sound distorted and if the
LRAD is operated for long periods of time while clipping, permanent damage may occur to one
or more of the drivers.
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If clipping is occurring when using the microphone, lower the level of your voice and
increase the distance between the microphone screen and your mouth when talking
into the microphone.
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If clipping is occurring when using an auxiliary audio device connected through the MP3
player, lower the output volume of the auxiliary audio device.
7.4.4 Symptom: The LRAD will not produce audio when using the MP3 Control Unit.
If the MP3 player powers up but will not produce audio through the LRAD, perform the
following checks.
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Ensure that the LRAD’s volume knob is not set to minimum.
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Select a different audio track on the MP3 player or play the Alert Tone using the button
on the side of the MP3 player. If a different audio track does work, upload the problem
audio file to a computer using the USB interface cable and attempt to play the file on
the PC to ensure that the audio file is recorded correctly.
•
Test the LRAD’s audio output using the microphone. If there is still no output with the
microphone, the Amplifier Module may have to be repaired or replaced.
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If these steps do not correct the problem, the MP3 Control Unit may have to be repaired
or replaced.
7.4.5 Symptom: MP3 Control Unit not recognized by computer or computer gives error
message when connecting MP3 Control Unit.
The USB download cable provided with the MP3 control unit has a USB compliant connector at
one end and a MIL-DTL-D38999 connector at the other. The MIL connector is not fully USB
compliant and does not provide a mate first/break last ground connection as required by the
USB standard. For this reason, it is important to plug the MIL connector into the MP3 player
