Lectrosonics MM400c - Manual (Page 3)

Watertight Miniature UHF Belt-Pack Transmitter
Rio Rancho, NM 3
Thank you for selecting the Lectrosonics MM400C
watertight miniature transmitter. The unique design
provides several distinct features for professional ap-
plications:
• Outstanding RF operating range
• Superb audio quality
• Ultra-lightweight, corrosion resistant housing
• Watertight seals for use in wet environments
• Programmable emulation modes for maximum
versatility
The patented Digital Hybrid Wireless ® design combines
24-bit digital audio with analog FM techniques to pro-
vide the operating range of the finest analog wireless
systems and the audio quality of a pure digital system.
The 100 mW RF output power extends operating range,
and the DSP controlled, dual-envelope limiter cleanly
handles input peaks to allow higher gain settings. This
combination maximizes operating range and the signal
to noise ratio of the system.
The input provides 6 VDC bias voltage for use with
modern electret lavaliere microphones. Multi-color
LEDs are provided to make input gain adjustments
quick and accurate, without having to view the receiver.
The battery compartment accepts AA alkaline, lithium
or NiMH batteries, and a detachable antenna ¼ wave-
length flexible cable connects to a watertight 50 Ohm
SMA port on the transmitter.
The MM400C is machined from a solid aluminum block
to provide the lightweight, rugged package needed in
extreme environments without compromising functional-
ity. Input jacks and controls are O-ring sealed for water-
tight protection in wet environments. A special noncor-
rosive finish resists salt water exposure and perspiration
in extreme environments.
The DSP-based design offers backward compatibility
with a handful of earlier analog designs, such as the
Lectrosonics 100 and 200 Series receivers, and some
other brands of analog wireless receivers. Compat-
ibility Modes are easily selected with a sequence of
frequency switch settings and cycling the unit’s power.
Only the MM400C transmitter is covered in this manual.
Companion receivers are covered in separate manuals.