Lectrosonics Inc SMQE 사용자 설명서

6

Controls and Functions

LCD Screen

The LCD is a numeric-type Liquid Crystal Display with 

several screens that allow settings to be made with the 

AUDIO, FREQ, UP and DOWN to configure the trans-

mitter. Turn on and turn off countdowns appear in the 

LCD allowing the transmitter to be turned on for adjust-

ments without the output stage enabled, and to prevent 

accidental turn off.

Power LED

The PWR LED glows green when the battery is good. 

The color changes to red when there is about 30 

minutes of operation left with the recommended lithium 

battery. An alkaline battery will have about 20 minutes 

of life left. When the LED begins to blink red, there are 

only a few minutes of life.

Note: A NiMH battery will give little or no warning 

when it is depleted. If you wish to use NiMH 

batteries in the SM, we recommend trying fully 

charged batteries in the unit, noting the length of 

time that the batteries will run the unit and then 

using the battery timer feature available on most 

Digital Hybrid receivers.

A weak battery will sometimes cause the PWR LED to 

glow green immediately after being put in the unit, but 

will soon discharge to the point where the LED will go 

red or shut off completely. When the SM is in SLEEP 

mode, the LED blinks green every few seconds (See 

Sleep Mode, page 8).

Audio Input Jack

The Servo Bias input on the SM Series transmitters 

accommodates virtually every lavaliere, handheld or 

shotgun microphone available, plus line level signals.

Battery Compartment and Thumb Screw

The large knurled thumbscrew is used to release or 

secure the Battery Compartment Cover Plate, allowing 

access to the battery.

Modulation LEDs

The Modulation LEDs provide a visual indication of the 

input audio signal level from the microphone. These two 

bicolor LEDs can glow either red or green to indicate 

modulation levels. 0 dB in the table below 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

Audio Button

The AUDIO button is used to display the audio level 

setting and low frequency roll-off. The UP and DOWN 

arrows adjust the values.
The AUDIO button is also used with the FREQ button to 

enter standby mode and to power the transmitter on or off.

Freq Button

The FREQ Button displays the selected operating 

frequency and also 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.
The FREQ button is also used with the AUDIO button to 

enter standby mode and to power the transmitter on or off.

Up/Down Arrows

The Up and Down arrow buttons are used to select the 

operating frequency, adjust the audio level, or set the 

Compatibility Mode.
Pressing both arrows simultaneously enters the lock 

countdown. Holding the two arrow buttons until the 

countdown completes locks the control panel buttons so 

they can only be used to display current settings. “Loc” 

is displayed to indicate the controls are locked.
Once locked, the buttons can be unlocked only by re-

moving the battery, or via the RM remote control (if this 

function was enabled in the transmitter setup).

Antenna

The flexible antenna is built with woven, galvanized 

steel mesh cable, cut to the 1/4 wavelength of the 

center of the frequency block of the transmitter. The 

antenna is extremely rugged and moisture resistant.