Lectrosonics WM/VT500WATER Quick Start Guide
Quick
Start
Guide
Digital Hybrid Wireless®
Watertight Belt-Pack Transmitter
WM, WM/E01, WM/E02, WM/X
Fill in for your records:
Serial Number:
Purchase Date:
Digital Hybrid Wireless
U.S. Patent 7,225,135
This guide is intended to assist with
initial setup and operation of your
Lectrosonics product.
For a complete instruction manual,
visit and download at:
www.lectrosonics.com/manuals
9 October 2019
®
Controls and Functions
Modulation
Audio
Input Jack
PWR LED
LCD Screen
The display is a highly visible, backlit LCD with screens for making all setup and level
adjustments. The transmitter can be powered up with or without the RF output turned
on. With the RF output turned off, all adjustments can be made without creating interference for other wireless systems in the vicinity.
For normal powering up and down, a countdown appears in the LCD. The buttons must
pressed in for the duration of the countdown, which helps to prevent accidentally turning
the transmitter on or off.
LEDs
AUDIO Button
Power LED
The PWR LED glows green when the battery is good. The color changes to red when
there is about 30 minutes of operation left with the recommended lithium battery. An
alkaline battery will have about 20 minutes of life left. When the LED begins to blink red,
there are only a few minutes of life.
Note: A NiMH rechargeable battery will give little or no warning when it is depleted. If you wish to use
NiMH batteries, we recommend trying fully charged batteries in the unit and using the battery timer feature
available in most receivers to determine the available operating time.
A weak battery will sometimes cause the PWR LED to glow green immediately after
the unit is turned on, but will soon discharge to the point where the LED will turn red or
the unit will turn off completely. When the transmitter is in SLEEP mode, the LED blinks
green every few seconds.
Audio Input Jack
This is a threaded locking connector that accepts the Lectrosonics watertight WP connector.
Battery Compartments and Thumb Screws
The large knurled thumbscrews retain the batteries and maintain solid battery contact.
The lanyard keeps the battery caps attached, but it can be removed if desired using a
1/16 inch hex key (Allen wrench).
Modulation LEDs
Proper input gain adjustment is critical to ensure the best audio quality. Two red/green
LEDs will glow to accurately indicate modulation levels. The input circuitry includes a
wide range DSP-controlled limiter to prevent distortion during high peak levels.
It is important to set the gain (audio level) high enough to achieve full modulation during
louder peaks in the audio. The DSP-controlled limiter can handle peaks over 30 dB
above full modulation. Full modulation is indicated when the -20 LED first turns red.
With an optimum setting, the -20 LED will flicker red during operation. If the LEDs never
flash red, the gain is too low.
LCD
FREQ Button
UP Arrow
Battery Compartment
DOWN
Arrow
Caps
LECTROSONICS, INC.2
Signal Level -20 LED -10 LED
Less than -20 dB Off Off
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 db
Red Red
Green Off
Green Green
Red Green
AUDIO Button
The AUDIO button is used to display the gain and low frequency roll-off settings. The
UP and DOWN arrows adjust the values. This button is also used with the FREQ button
to enter standby mode and to power the transmitter on or off.
FREQ Button
The FREQ button displays the selected operating frequency and also toggles the LCD
between displaying the actual operating frequency in MHz and a two-digit hexadecimal
number that corresponds to the equivalent Lectrosonics Frequency Switch Setting.
This button is also used with the AUDIO button to enter standby mode and to power the
transmitter on or off.
Up/Down Arrows
The Up and Down arrow buttons are used to select the values on the various setup
screens and to lock out the control panel. Pressing both arrows simultaneously enters
the lock countdown. When an attempt is made to change a setting while the control
panel is locked, a message will flash on the LCD as a reminder that the unit is locked.
Once locked, the buttons can only be unlocked by removing the batteries, or with the
RM remote control.
Antenna
The fixed whip antenna is made of a flexible, woven, galvanized steel mesh cable.
www.lectrosonics.com 3
Battery Compartments
The battery compartments are a rugged,
straightforward design with a recessed entry
that captures the O-ring on the cap. The spring
contact on the cap maintains solid contact on
the battery regardless of its exact length.
The O-rings should be kept clean and dry, and
coated with petroleum jelly on a regular basis.
See page 11 of the manual online for more
information on preventing corrosion.
Battery polarity is marked
•
•
•
•
•
DO NOT COVER
VENT HOLES
on the rear cover
Do not cover
vent holes
Unscrew battery caps to
insert batteries
Attaching and Removing the Microphone
The threaded WP watertight plug on
the microphone cable fits into a
recessed jack on the top panel. The
recess in the opening retains the
O-ring when the plug is tightened.
The Lectrosonics M152WP lavaliere
microphone is supplied with the WP
plug already installed. Other
Treat O-ring with petroleum
jelly before connecting
LECTROSONICS, INC.4
microphones can also be terminated
with this plug by following the
instructions included with the WP
connector kits.
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