Lectrosonics LM, Руководство по эксплуатации

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Frequency Agile UHF Belt-Pack Transmitter
Rio Rancho, NM – USA
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.
The Modulation LEDs are also used to indicate the Compatibility
Mode when the transmitter is initially turned on. The Modulation
LEDs will blink simultaneously:
• 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 audio input level (or gain) 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.
THE 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.
BATTERY INSTALLATION
The transmitter is powered by a standard 9 volt battery. We recommend using alkaline or lithium battery for longest
life. Standard zinc-carbon batteries marked
“heavy-duty” or “long-lasting” are not adequate. Alkaline batteries
provide over six hours of operation at room temperature. Lithium
batteries can provide up to 13 hours and will work at lower tempera-
tures. The battery status circuitry is designed for the voltage drop
over the life of alkaline batteries. NiMH rechargeable batteries
will also work; although they provide fewer hours of opera-
tion and will run down quite abruptly. Because of this,
using the Power LED to verify battery status not reliable
with NiMH batteries; although, it may be possible to
track battery status using the Battery Timer function
available in a number of Lectrosonics receivers. (Refer
to the associated receiver manual to determine is this
function is available in your situation.)
Warning
Care should be taken not to leave a fully
discharged lithium battery in the transmitter, as
swelling of the battery can make it difficult to
remove from the compartment.
To replace the batteries, push up on the Battery Compart-
ment Door and rotate it clockwise. (See illustration.)
Remove the old battery and take note of the polarity
marked inside showing the location of the positive (+) and
negative (-) terminals. (You can see the large and small
contact holes inside the battery compartment with the
door open.)
Insert the new battery correctly and close the Battery
Compartment Door by reversing the opening procedure.
If the battery is inserted incorrectly, the door will not fully
close. Do not force the door closed.
1
2
Signal Level
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
-20 LED -10 LED
Off
Green
Green
Red
Red
Off
Off
Green
Green
Red