User's Manual
LR
LECTROSONICS, INC.
14
Press the MENU/SEL button to pause the scan. 
Use the UP and DOWN buttons to scroll the marker 
through the graphical image. Press MENU/SEL to 
increase the resolution while scrolling.
Use arrow buttons to scroll marker
Press MENU/SEL to increase 
the resolution in scrolling.
Press MENU/SEL to zoom in on the image. Scroll us-
ing the buttons as described above.
RF energy Clear spectrum
After scrolling the marker to a spot in the clear spec-
trum in the display, press BACK to open a menu with 
three options.
Use the arrow keys to select the option, then press 
MENU/SEL to store the setting and return to the Main 
Window.
•  Keep stores the new frequency and returns to 
 the  Main  Window.
•  Keep + IRSync stores the frequency, then moves 
 to the IR Sync screen. Copy the frequency to the 
 transmitter and then press BACK to return to the 
 Main  Window.
•  Revert discards the new frequency and returns 
 to the Main Window.
•  Press BACK to return to scanning
5) Set Up Transmitter to Matching Frequency 
 and Compatibility Mode
If you have not already set the frequency on the 
transmitter in the previous procedures, use IR Sync or 
complete the settings manually.
Lectrosonics transmitters with IR Sync:
On the LR receiver, navigate to IR Sync on the menu 
and press the MENU/SEL button. Hold the transmitter 
and receiver fairly close to each other (within two feet 
or so) and position them so the IR ports are facing one 
another. Press the UP arrow on the receiver to initiate 
the transfer of settings. The receiver will display a mes-
sage when the settings have been received.
Other transmitters: 
Frequency, input gain, etc, are set with the controls on 
the transmitter. The correct compatibility mode must 
also be selected on the receiver.
6) Adjust Transmitter Input Gain
NOTE: This adjustment is very important, since 
it will determine the signal to noise ratio and 
dynamic range that the system will deliver.
Lectrosonics transmitters with LCD interface:
The LEDs on the control panel provide an accurate 
indication of modulation level to assist in adjusting the 
input gain. The LEDs will glow either red or green to 
indicate modulation levels as shown in the following 
table. 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.
Signal Level  -20 LED  -10 LED
Less than -20 dB   Off   Off
-20 dB to -10 dB   Green   Off
-10 dB to +0 dB   Green   Green
+0 dB to +10 dB   Red   Green
Greater than +10 dB   Red   Red
NOTE: 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 fresh batteries in the transmitter and power 
the unit on in the standby mode (a brief press on 
the power switch with L-Series transmitters).
2)  Navigate to the Gain setup screen. 
Gain
LineIn
Freq.
ProgSw
-40
-20
0
Gain
25










