Adjust The Input Gain - Lectrosonics SSM Quick Start Manual

Set up Frequency and Gain
1) Use the receiver to find a clear frequency and set the transmitter to match.
2) Attach the microphone or signal source and adjust the input gain following
the steps on the next page.
3) Walk test the system through the area where it will be used to make sure
there are no dropouts.

Adjust the Input Gain

The two bicolor Modulation LEDs on the control panel provide a visual indica-
tion of the audio signal level entering the transmitter. The LEDs will glow either
red or green to indicate modulation levels as shown in the following table.
Signal Level
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
NOTE: Full modulation is achieved at 0 dB, when the "-20" LED first
turns red. The limiter can cleanly handle peaks up to 30 dB above this
point.
It is best to go through the following procedure with the transmitter in the
standby mode so that no audio will enter the sound system or recorder during
adjustment.
1) With a charged battery in the transmitter, power the unit on in the standby
mode (see previous section Powering On in Standby Mode).
2) Prepare the signal source. Position a microphone the way it will be used in
actual operation and have the user speak or sing at the loudest level that
occur during use, or set the output level of the instrument or audio device to
the maximum level that will be used.
3) Press and hold the AUDIO button with Aud and a numeral on the display
(e.g. Aud 22).
4) Use the
and
green and the –20 dB LED starts to flicker red during the loudest peaks in
the audio.
5) Once the audio gain has been set, the signal can be sent through the
sound system for overall level adjustments, monitor settings, etc.
6) If the audio output level of the receiver is too high or low, use only the con-
trols on the receiver to make adjustments. Unless the microphone or its po-
sition changes, or a different instrument is being used, leave the transmitter
gain adjustment set according to these instructions. Use the audio output
level control on the receiver to make adjustments for the desired level being
delivered to the connected mixer, recorder, etc.
6
-20 LED
Off
Green
Green
Red
Red
arrow buttons to adjust the gain until the –10 dB glows
-10 LED
Off
Off
Green
Green
Red
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