Lectrosonics WM, Instruction Manual

Page: 3 / 24

Watertight Transmitter
Rio Rancho, NM
3
Introduction
The WM transmitter is designed to resist damage when
used in wet or dusty conditions and also offer a compre-
hensive feature set that makes it equally at home in film
and television production and on stage.
A solid machined aluminum housing with a corrosion re-
sistant finish hosts dual battery compartments, a mois-
ture sealed control panel with backlit LCD and enlarged
membrane switches. Recessed seats for the O-rings in
the battery caps and input jack allow the caps and mic
connector to be tightened securely without excessive
deformation of the O-rings.
The antenna is made of an extremely durable, multi-
strand alloy that will withstand heavy abuse. It is mount-
ed with a compression sealed strain relief that prevents
dust and moisture from entering the housing.
As the first stage in the signal processing chain, the
input preamp section includes very high quality, low
noise components with a wide range of gain adjust-
ment in 1 dB increments and a DSP-controlled input
limiter. Dual color LEDs on the control panel accurately
indicate audio input level for precise gain adjustment.
Easily accessed screens on the LCD simplify setup and
adjustments.
Output power is adjustable to provide either extended
operating range or extended battery life as needed for
the application.
The Digital Hybrid Wireless
®
design (US Patent
7,225,135) combines 24-bit digital audio with analog
FM resulting in a system that has the same operating
range as analog systems, the same spectral efficiency
as analog systems, the same long battery life as analog
systems, plus the excellent audio fidelity typical of pure
digital systems.
The DSP-based design works with all Digital Hybrid
receivers, and is backward compatible for use with
Lectrosonics 200 Series, 100 Series, IFB receivers and
some other brands of analog wireless receivers.
Consumer Alert for US Users - FCC Order DA 10-92
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this micro-
phone system without a license is subject to certain restrictions: the system may not cause harmful interference; it
must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received
from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless mi-
crophone systems, and these rules are subject to change. For more information, call the FCC at 1-888- CALL-FCC
(TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at www.fcc.gov/cgb/wirelessmicrophones.
To operate wireless microphone systems at power greater than 50mW, you must qualify as a Part 74 user and be
licensed. If you qualify and wish to apply for a license go to: http://www.fcc.gov/Forms/Form601/601.html
Table of Contents
Introduction......................................................................................3
General Technical Description........................................................4
Servo Bias Input....................................................................... .....4
No Pre-Emphasis/De-Emphasis....................................................4
Low Frequency Roll-Off.................................................................4
Input Limiter...................................................................................4
Signal Encoding and Pilot Tone.....................................................5
Microprocessor Control..................................................................5
Compatibility Modes......................................................................5
Control Panel.................................................................................5
Wide-Band Deviation.....................................................................5
Variable Power Output...................................................................5
Battery Operation..........................................................................5
Frequency Blocks..........................................................................5
Output Isolator...............................................................................5
Controls and Functions..................................................................6
LCD Screen...................................................................................6
Power LED.....................................................................................6
Audio Input Jack............................................................................6
Battery Compartment and Thumb Screw.......................................6
Modulation LEDs............................................................................6
AUDIO Button................................................................................6
FREQ Button.................................................................................6
Up/Down Arrows............................................................................6
Antenna..........................................................................................6
Battery Compartments....................................................................7
About Batteries................................................................................7
Input Connector...............................................................................7
Equivalent Input Circuit Diagram...................................................7
Operating Instructions....................................................................8
Power Up and Boot Sequence.......................................................8
Power Down...................................................................................8
Standby Mode................................................................................8
Compatibility, Output Power, Bias Voltage (phantom power),
LCD Backlight and Tuning Step Size Selector...............................8
Audio LF Roll-off and Gain.............................................................9
Frequency Selection....................................................................10
Lock/Unlock Screens...................................................................10
Remote Control Enable/Disable and
Configuring Power Restore..........................................................11
Preventing Corrosion....................................................................11
Optional RM Remote Control.......................................................12
Powering the RM on and off........................................................12
Setup Screens.............................................................................12
Operating Notes...........................................................................13
RM Quick Reference....................................................................13
RM2 Remote Control.....................................................................13
LectroRM........................................................................................14
Troubleshooting.............................................................................15
RM Troubleshooting.....................................................................16
Accessories and Replacement Parts...........................................17
Antenna Length by Block.............................................................18
Desiccant Battery Caps................................................................19
Re-conditioning (drying out) the caps and desiccant beads........20
Replacing the desiccant beads....................................................20
Specifications...............................................................................21
Service and Repair........................................................................23
Returning Units for Repair...........................................................23