Lectrosonics Inc SSMB1 Benutzerhandbuch

6

Controls and Functions

Modulation LEDs

Proper input gain adjustment is critical to ensure the 

best audio quality. Two bicolor LEDs will glow either red 

or green to accurately indicate modulation levels. The 

input circuitry includes a wide range DSP controlled 

limiter to prevent distortion at high input levels.
It is important to set the gain (audio level) high enough 

to achieve full modulation during louder peaks in the 

audio. The limiter can handle over 30 dB of level above 

full modulation, so with an optimum setting, the LEDs 

will flash red during use. If the LEDs never flash red, the 

gain is too low. In the table below, +0 dB indicates full 

modulation.

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

LCD Screen

The LCD is a numeric-type Liquid Crystal Display with 

screens for adjusting output power, frequency, audio 

level, low frequency audio roll-off and various modes 

and options. The transmitter can be powered up with or 

without the RF output turned on. A brief press on the 

power button turns the unit on in a Standby Mode with 

the output turned off to allow adjustments to be made 

without interfering with other wireless systems in the 

vicinity.

BATT LED

This LED glows green when the battery is good. The 

color changes to red when there is only a few minutes 

of operation left. The LED will blink briefly, just before 

the unit powers down.
The exact point at which the LED turns red will vary 

with battery brand and condition, temperature and cur-

rent drain. The LED is intended to simply catch your 

attention, not to be an exact indicator of remaining time. 

AUDIO Button

The AUDIO button is used to adjust the audio output 

level and low frequency roll-off. Each press of the button 

will toggle between the two settings.

FREQ Button

The FREQ Button displays the selected operating 

frequency and toggles the LCD between displaying 

the actual operating frequency in MHz and a two-digit 

hexadecimal number that corresponds to the equivalent 

Lectrosonics Frequency Switch Setting.

Power Button

Turns the unit on and off. A brief press turns power on 

in a Standby Mode to make settings without interfering 

with other wireless systems in the vicinity. Pressing and 

holding the button until a counter on the LCD completes 

a sequence turns the power on with the RF output 

turned on. Pressing and holding for the duration of a 

countdown turns the unit off.

UP and DOWN Arrow Buttons

The Up and Down arrow buttons are used to select the 

values on the various setup screens and to lock out 

the control panel. Press and hold both buttons until a 

countdown is completed to lock the keypad. Remove 

the battery to unlock the keypad.
These arrow keys also turn the LEDs on and off. With 

no other button pressed, the UP arrow turns the LEDs 

on and the DOWN arrow turns them off. When the LEDs 

are tuned off, the LCD with display a reminder every 

few seconds.

See Operating Instructions and Setup 

Screens for compete information.