Listen Technologies LT-803-072 Adjusting Audio Levels, 4Test Tone if necessary, LT-LT803-800-072

LT-803-072 Operating Instructions

4Test Tone (if necessary)

Use the test tone to transmit a 400 Hz tone. This tone will allow the receiver to know if the system is transmitting properly. All receivers should be able to hear this tone if tuned to the proper channel.

LT-LT803-800-072

LT-803

Adjusting Audio Levels

Test Tone Button

1Adjust Audio Input Level

Turn the input knob counter-clockwise to add gain to Input 1. This will decrease gain to Input 2. Turn input knob clockwise to add gain to Input 2. This will decrease gain to Input 1. If you have two audio sources connected to Input 1 and 2, adjust the level of one input using the VU meter, then adjust the output level of the other audio source. Adjust the input level until the left VU meter(s) occasionally illuminate the red LEDs. Illumination of the red LEDs indicates the unit is in limiting. Limiting is required so that the unit does not over-modulate the transmit signal. If you don’t want any audio limiting to occur, make sure the red LEDs never illuminate. If you want a highly limited signal, turn the audio gain up so the red LEDs illuminate often.

LT-803

Audio Input Level Knob

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