Lectrosonics DR175NC User Manual download pdf (Page 6)

OPERATING INSTRUCTIONS

1) Connect the power supply.

2) Attach and place the antennas.

3) Connect the audio cable.

4) Set the front panel AUDIO LEVEL control fully counter-clockwise and set the POWER switch to ON. Check to

see that the red POWER LED lights up.

5) Adjust the transmitter "gain". THIS IS PERHAPS THE MOST IMPORTANT STEP IN THE SET UP

PROCEDURE. See your transmitter manual (Operating Instructions section) for specific directions on the

proper gain adjustment of your particular transmitter.

6) After adjusting the transmitter gain, set the AUDIO LEVEL to a comfortable listening position.

7) Operate the system and adjust the receiver output level as required for your equipment. The input levels on

different VCR’s and PA equipment vary, which may require that you set the OUTPUT ATTENUATOR control in

an intermediate position. Try different settings and listen to the results. If the output of the receiver is too high,

you may hear distortion or a loss of the natural dynamics of the audio signal. If the output is too low, you may

hear steady noise (hiss) along with the audio.

INDICATOR QUICK REFERENCE

CODE LED - Not active on this model (DR175NC.)

POWER - This red LED lights up when the receiver is properly connected to a power supply and switched on.

MODULATION -- The audio level is indicated by these two LEDs, -20 and 0dB. The normal operating level occurs

when the -20 (green) LED is lighting up with the audio. The 0dB LED (red) lights up when the audio level is high

and the signal is being compressed in the transmitter. An extremely high audio level may cause distortion. If

neither LED lights up when audio is being produced through the system, the audio level is too low, which may

produce audible background noise (hiss) in the audio. The audio level is adjusted with the transmitter GAIN or MIC

LEVEL control.

OPTI-BLEND LEDs -- These green LEDs indicate the blending action of the panning circuit in response to the

comparison of signal to noise ratios in the two receivers. The audio from either receiver is being mixed into the

blend when the corresponding LED lights up. The brightness of these LEDs varies in proportion to the amount of

audio being utilized from the associated receiver.

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Lectrosonics DR175NC User Manual Page 6