Lectrosonics MM400a - Manual - Manual (Page 7)

Frequency Agile UHF Miniature Belt-Pack Transmitter
kit. (See WPMC-3 and WPMC-10 in Accessories
Catalog.)
A Switchcraft 850 connector can be used in an emer­
gency though it is not waterproof.
AUDIO LEVEL
Used to adjust the audio input level for the proper
modulation.
MODULATION LEDS
The Modulation LEDs indicate the proper setting of the
MIC LEVEL control. There are two bicolor modulation
LEDs that can glow either red or green depending on
the amount of gain applied.
“-20dB level” Glows green when the transmitter
approaches 20 dB below full
modulation, then shifts to red as the
gain increases to 0 dB.
“-10 dB level” Glows green when the transmitter
approaches 10 dB below full
modulation, then shifts to red as the
gain increases to +10 dB modulation.
FREQUENCY ADJUST
Two 16 position rotary Frequency Select Switches are
used to select the center frequency of the carrier. The
left switch is a coarse adjustment and the right switch is
the fine adjustment.
The switches are accessed by loosening the knurled
knob holding the Frequency Adjust Switch Cover against
the transmitter housing and rotating the cover out of the
way.
Fine Coarse
Frequency Select Switches
0 1
2
3
4
5
6
7 8 9
A
B
C
D
E
F 0 1
2
3
4
5
6
7 8 9
A
B
C
D
E
F
ANTENNA
The flexible bronze 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.
It is removable via an SMA connector. The SMA connec­
tor is a 50 Ohm RF port which can also be connected
directly to test equipment.
Replacement antennas are available in pre-cut lengths
for specific frequency blocks, or as a kit with instructions
to cut the antenna for any frequency block.
Antenna Connector
Antenna
THE BELT CLIP
The belt clip may be removed for special applications by
gently spreading the spring wire clip and pulling the ends
out of the holes in the case. The clip can be installed in
either the up or down position so that when the transmit­
ter is worn, the antenna can be pointing up or down.
Replacement belt clips are available as Lectrosonics part
no. 26486.
Stainless Steel Belt Clip
Rio Rancho, NM – USA 7