Lectrosonics SMV User Manual download pdf (Page 6)

SMV Series

LECTROSONICS, INC.

Controls and Functions

LCD Screen

TheLCDisanumeric-typeLiquidCrystalDisplaywith

screens for adjusting power, frequency, audio level and

lowfrequencyaudioroll-off.Thetransmittercanbe

powered up with or without the RF output turned on. A

countdown appears in the LCD when powering on and

off, allowing the transmitter to be turned on without RF

for adjustments, and to prevent accidentally turning it off

with momentary button presses.

Power LED

ThePWRLEDglowsgreenwhenthebatteryisgood.

The color changes to red when there is about 30 min-

utes of operation left with the recommended lithium bat-

tery.WhentheLEDbeginstoblinkred,thereareonlya

few minutes of life.

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.

1.6

1.4

1.2

1.0

Hours

Voltage

Varies

Green Red Blink

AweakbatterywillsometimescausethePWRLEDto

glow green immediately after the transmitter is turned

on,butwillsoondischargetothepointwheretheLED

will turn red or the unit will turn off completely.

Audio Input Jack

The Servo Bias input circuitry accommodates virtually

every lavaliere, handheld or shotgun microphone avail-

able, plus line level signals.

Battery Compartment and Thumb Screw

The large knurled thumbscrew is used to release or

secure the Battery Compartment Cover Plate.

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ashredduringuse.IftheLEDsneverashred,the

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

modulation.

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

AUDIO Button

The AUDIO button is used to display the audio level and

lowfrequencyroll-offsettings.TheUPandDOWNar-

rows 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 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.

Up/Down Arrows

The Up and Down arrow buttons are used to select the

values on the various setup screens and to lock out the

control panel.

Antenna

The transmitter uses a whip antenna with a ﬂexible wo-

ven,galvanizedsteelmeshcableandastandardSMA

connector.

Battery

Compartment

Thumb Screw

Battery

Compartment

Cover Plate

Audio

Input Jack

AUDIO Button

LCD

FREQ Button

Modulation

LEDs

PWR LED

UP Arrow

DOWN Arrow

Antenna

Jack

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Lectrosonics SMV User Manual Page 6

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