Lectrosonics Inc LMAM 사용자 설명서

Controls and Functions

Input Jack

The 5-pin (Switchcraft TA5F compatible) input accom-

modates virtually every lavaliere, hand-held or shotgun 

microphone available, and most musical instrument 

signals.  Line level signals can also be accommodated.  

(See 5-Pin Input Jack Wiring.)

Power ON/OFF Switch

The Power ON/OFF switch turns the transmitter on 

and off.  A pilot tone muting system prevents “thumps” 

or transients from occurring at the reciever even if the 

transmitter is abruptly switched on or off.

Power LED

The Power LED glows green when the transmitter is 

operating and the battery is good.  It turns red when 

the battery voltage drops to 6.1 VDC and starts blinking 

red when the voltage drops to 5.6 VDC.  When using a 

recommended lithium or alkaline battery, there will be 

about 30 minutes of operating time remaining when the 

Power LED first begins blinking red.

Note: A weak battery will sometimes cause the 

Power LED glow green, but it will soon discharge 

to the point where the Power LED will glow red or 

go out completely.  If in doubt, replace the battery 

with a known new battery.  If the Power LED fails 

to glow when the transmitter is turned on, replace 

the battery.

NiMH batteries give little or no warning when they are 

depleted.  If you wish to use NiMH batteries in the 

transmitter, you will need to manually keep track of the 

operating time.  Start with a fully charged battery, then 

measure the time it takes for the Power LED to go out 

completely.  A number of Lectrosonics receivers incor-

porate a Battery Timer function which tracks the amount 

of time the transmitter signal is detected  (See your re-

ceiver manual to determine if this function is available.)  

By using the receiver’s battery timer and replacing the 

transmitter battery before the premeasured time is up, 

users can minimize potential loss of audio when NiMH 

batteries are used.

Frequency Select Switches

Two 16-position rotary Frequency Select Switches, ac-

cessed through the left side panel, are used to adjust 

the transmitter’s operating frequency.  These switches 

are labeled 1.6M and 100K.  The 1.6M switch is used 

for coarse frequency adjustments and the 100K is used 

for fine frequency adjustment.

Modulation LEDs

The Modulation LEDs provide a visual indication of the 

input audio signal level from the microphone or musical 

isntrument.  These two bicolor LEDs can glow either red 

or green to indicate modulation levels.  

The Modulation LEDs are also used to indicate the 

Compatibility Mode when the transmitter is initially 

turned on. The Modulation LEDs will blink simultane-

ously:

  •  Once for 100 Series mode 

•  Two times for 200 Series mode 

•  Three times for mode 3 

•  Four times for Digital Hybrid Wireless

™ 

 

  or 400 Series mode 

•  Five times for IFB mode

Audio Level

The AUDIO LEVEL control is used to set the level of the 

transmitter’s input for the proper modulation.

Antenna

The flexible, insulated galvanized steel cable antenna 

supplied with the transmitter is cut to 1/4 wavelength of 

the center of the frequency block (the frequency range) 

of the transmitter.  

Belt Clip

The belt clip may be removed for special applications 

by pulling the ends out of the holes in the sides of the 

case.  An optional hinged belt clip (P/N BCHINGED) is 

also available.  Contact a Lectrosonics sales represen-

tative, or visit our web site (www.lectrosonics.com) for 

more details.

(LM Shown for illustrative purposes)