Lectrosonics WM - Manual User Manual download pdf (Page 7)

Watertight Transmitter

Rio Rancho, NM

Battery Compartments

The battery compartments are a rugged, straight-

forward 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 for

more information on preventing corrosion.

Battery polarity is marked

on the rear cover

Unscrew battery caps to

insert batteries

About Batteries

The transmitter is powered by two AA batteries.

Lithium batteries are recommended for longest life,

which typically provides over 7.5 hours of operation at

room temperature with the output set to 250 mW. At 50

mW, the runtime is typically over 14 hours with lithium

batteries.

The PWR LED glows green when the battery is good.

The color changes to red at a mid-point of operating

life, and will continue to glow red until the battery gets

close to the end of its life. When the LED begins to

blink red, there are only a few minutes remaining.

The exact point at which the LED turns red will vary

with battery brand and condition, temperature and cur-

rent drain. The LED is simply a reminder intended to

catch your attention, not an exact indicator of remain-

ing time.

1.6

1.4

1.2

1.0

Hours

Voltage

Varies

Green Red Blink

Input Connector

The threaded WP watertight plug on the microphone

cable ﬁts into a recessed jack on the top panel. The re-

cess in the opening retains the O-ring when the plug is

tightened. The Lectrosonics M152WP lavaliere micro-

phone is supplied with the WP plug already installed.

Other microphones can also be terminated with this

plug by following the instructions included with the WP

connector kits.

Treat O-ring with petroleum jelly before

connecting (see page 11)

Equivalent Input Circuit

Diagram

To Virtual Ground

Audio Amplifier

MIC

GND

+5 VDC

Servo Bias

To Limiter Control

200 Ohm

100 Ohm

(menu selectable)

Roll-off

332 Ohm

20k

closed for mic level

open for line level

(menu item)

0, 2, 4V

35, 50, 70, 100, 120, 150 Hz

30uF/10V

WM Equivalent

Input Circuit Wiring

1 2 3 4 5 6 7 8 9 10 11 12 ... 23 24

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Lectrosonics WM - Manual User Manual Page 7

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