Lectrosonics LMb/E01 User manual

Quick

Start

Guide

Fill in for your records:

Serial Number:

Purchase Date:

This guide is intended to assist with

initial setup and operation of your

Lectrosonics product.

For a detailed user manual, down-

load the most current

version at:

www.lectrosonics.com/manuals

LMb

Digital Hybrid Wireless®

UHF Belt Pack Transmitter

LMb, LMb/E01, LMb/E06, LMb/X

U.S. Patent 7,225,135

15 July 2019

LECTROSONICS, INC.2

Controls and Features

-20

-10

BAT

Input Jack

Programmable

Switch

Modulation

LEDs

Power/Function

LED

-20

-10

BAT

Move switch

toward the white

dot to turn it on

Lectrosonics, Inc.

Made in U.S.A.

IC: 8024A-LMBC1

470.100 - 537.575 MHz

Model: LMBC1

S/N XXXXX

623.400

-40 -20 0

PORT 5

494.500

-40 -20 0

b 19

IR Sync

Port

RF Indicator

Battery icon

Reserved for Future Use

Battery Status LED

navigation

buttons

Power Button

Slide door

outward

to open

battery

door and

access

batteries

Belt clip mounting hole

www.lectrosonics.com 3

Keypad and LCD Interface

623.400

-40 -20 0

494.500

-40 -20 0

b 19

BATT LED

Glows green when the batteries are

good. As the batteries are drained,

the LED will turn to a steady red at a

mid-point during their life, then begin

to blink red when only a few minutes of

operation remain.

MENU/SEL Button

Pressing this button enters the menu

and selects menu items to enter the

setup screens.

BACK Button

Pressing this button returns to the previous menu or screen.

Power Button

Turns the unit off and on and enters the power menu.

Arrow Buttons

Used to navigate the menus.

Main Window Indicators

The Main Window displays the block number, Standby or Operating mode,

operating frequency, audio level, battery status and programmable switch

function. When the frequency step size is set at 100 kHz, the LCD will look

like the following.

494.500

-40 -20 0

b 19

MUTE

Block number

Frequency (MHz)

Frequency

(hex setting)

Operating mode

Battery status

Programmable

switch function

Audio level

When the frequency step size is set to 25 kHz, the hex number is smaller and

may include a fraction.

Note that the

frequency has

increased by 25

kHz from the upper

example.

494.525

-40 -20 0

b 19

MUTE

Fraction

1/4 = .025 MHz

1/2 = .050 MHz

3/4 = .075 MHz

LECTROSONICS, INC.4

System Setup Procedures

1) Install batteries, select the battery type and turn power on.

2) Select compatibility mode to match the receiver.

3) Connect signal source and adjust input gain for optimum modulation level.

4) Set StepSize and frequency to match receiver. Also see receiver manual

for scanning procedure.

5) Turn on receiver and verify RF and audio signals are present (see

receiver manual).

Battery Installation

The transmitter is powered by two

AA batteries. We recommend using

alkaline, lithium, or rechargeable

batteries for longest life. Standard

zinc-carbon batteries marked

“heavy-duty” or “long-lasting” are not

adequate.

The battery status circuitry compen-

sates for the difference in voltage

drop between alkaline and lithium

batteries across their usable life, so it’s important to select the correct battery

type in the menu.

Because rechargeable batteries run down quite abruptly, using the Power

LED to verify battery status will not be reliable. However, it is possible to track

battery status using the Battery Timer function available in Lectrosonics Digi-

tal Hybrid Wireless®receivers.

Push outward on the Battery Compartment Door and lift it to open.

www.lectrosonics.com 5

Navigating Menus

The LCD and keypad interface make it easy to browse the menus and make

the selections for the setup the user needs. When the unit is powered up in

either the operating or the standby mode, press MENU/SEL on the keypad to

enter a menu structure on the LCD. Use the and arrow buttons to select

the menu item. Then press the MENU/SEL button to enter the menu.

The prompt in the

upper right corner

may display one

or both arrows,

depending upon

what adjustment

can be made. If

the changes are

locked, a small

padlock symbol

will appear.

Gain

Freq.

ProgSw

Compat

-40 -20 0

Gain

Freq.

ProgSw

SEL

BACK

SEL

BACK

SEL

BACK

Compat SEL

BACK

Step Siz SEL

BACK

Phase SEL

BACK

SEL

BACK

Locked

SEL

BACK

SEL

BACK

BatType

Default

Rf On? SEL

BACK

Freq b 21

550.400

Press SEL to

select desired

adjustment step

Use arrow keys

to select desired

frequency

ProgSw Use arrow keys to select

switch function

TalkBk

Power

Mute

(none)

Compat Select from

listing

Use arrow keys to select

compatibility mode

Use arrow keys to select

frequency step size

100 kHz

25 kHz

StepSiz

Use arrow keys to select

audio output polarity

Pos.

Neg.

Phase

Use arrow keys to

lock/unlock keypad

Yes

Locked?

Use arrow keys to turn

Rf signal on/off

Yes

Rf On?

Use arrow keys to select

battery type

Alk.

Lith.

BatType

Use arrow keys to return

transmitter to default

factory settings

Yes

Default

settings

Gain 22 Use arrow keys to

select input gain

LECTROSONICS, INC.6

Powering On in Operating Mode

Press and hold the Power Button for several seconds until a counter on

the LCD progresses from 1 through 3, followed by a display of the model,

ﬁrmware version, frequency block and compatibility mode.

Hold

for

Rf On

...3

Band A1

V6.00

LMB

Nu Hybrid

494.500

-40 -20 0

b 19 When you

release the

button, the

unit will be

operational

with the RF

output turned on and the Main Window displayed. Only the second and third

screens will appear when the programmable function switch is used to turn on

the power.

Powering On in Standby Mode

A brief press of the Power Button , releasing it before the counter has

reached 3, will turn the unit on with the RF output turned off. In this Standby

Mode, the menus can be browsed to make settings and adjustments without

the risk of interfering with other wireless systems nearby.

Hold

for

Rf On

...1

Release

Power

Button

before the

counter

reaches

3 to enter

standby

mode

494.500

-40 -20 0

b 19

indicator

blinks

After settings and adjustments are made, press the power button again to turn

the unit off.

NOTE: Also see the section entitled Power Menu for the AutoOn

feature.

Powering Off

Powering

O . . .

From any screen, power can be turned off by selecting

Pwr Off in the power menu, holding the Power Button

in and waiting for the countdown, or with the program-

mable switch (if it is conﬁgured for this function).

If the power button is released, or the top panel switch is

turned back on again before the countdown is completed,

the unit will remain turned on and the LCD will return to

the same screen or menu that was displayed previously.

NOTE: If the programmable switch is in the OFF position, power can

still be turned on with the power button. If the programmable switch is

then turned on, a brief message will appear on the LCD.

www.lectrosonics.com 7

Power Menu

Pressing the power button when the unit is turned on will display a menu with

several options:

• Resume - returns to the previous mode and screen

• Pwr Off - turns the unit off

• Rf On? - enters a screen to enable the operating or standby modes

• AutoOn? - allows the unit to automatically power back up after a power

failure or when new batteries are installed; works in the operating mode only

• Backlit? - the backlight can be turned on continuously or set to turn off auto-

matically after either 30 seconds or 5 minutes.

• LED Off - turns the LEDs on (Normal) or off (Dark)

• About - indicates latest ﬁrmware version.

Selecting the Compatibility (Compat) Mode

When used with a Lectrosonics Digital Hybrid Wireless®receiver, the best

audio quality will be achieved with the system set to the Nu Hybrid compat-

ibility mode.

Compat

Hybrid

Gain

Freq.

ProgSw

Compat

Use the UP and DOWN arrows to select the desired mode, then press the

BACK button twice to return to the Main Window.

Compatibility modes are as follows:

• Mode 3* works with certain non-Lectrosonics models.

• Nu Hybrid works with all Lectrosonics Digital Hybrid receivers. The receiver

must also be set to Hybrid compatibility mode.

• IFB Series works with Lectrosonics IFB R1/R1a analog receivers.

* Contact the factory for details of this mode

LECTROSONICS, INC.8

Selecting Step Size

This menu item allows frequencies to be selected in either 100 kHz or 25 kHz

increments.

Compat

StepSize

Phase

Locked

StepSiz

100 kHz

25 kHz

StepSiz

100 kHz

25 kHz

If the desired frequency ends in .025, .050 or .075 MHz, the 25 kHz step size

must be selected.

Normally, the receiver is used to ﬁnd a clear operating frequency. All Lectro-

sonics Digital Hybrid Wireless®receivers provide a scanning function to quick-

ly and easily ﬁnd prospective frequencies with little or no RF interference. In

other cases, a frequency may be speciﬁed by ofﬁcials at a large event such as

the Olympics or a major league ball game. Once the frequency is determined,

set the transmitter to match the associated receiver.

www.lectrosonics.com 9

Adjusting the Input Gain

The two bicolor Modulation LEDs on the control panel and keypad provide a

visual indication of the audio signal level entering the transmitter. The LEDs

will glow either red or green to indicate modulation levels as shown in the fol-

lowing table.

Signal Level -20 LED -10 LED

Less than -20 dB Off Off

-20 dB to -10 dB Green Off

-10 dB to +0 dB Green Green

+0 dB to +10 dB Red Green

Greater than +10 dB Red Red

NOTE: Full modulation is achieved at 0 dB, when the “-20” LED ﬁrst

turns red. The limiter can cleanly handle peaks up to 30 dB above this

point.

It is best to go through the following procedure with the transmitter in the

standby mode so that no audio will enter the sound system or recorder during

adjustment.

1) With fresh batteries in the transmitter, power the unit on in the standby

mode (see previous section Powering On in Standby Mode).

2) Navigate to the Gain setup screen.

-40 -20 0

Gain

Freq.

ProgSw

Compat

3) Prepare the signal source. Position a microphone the way it will be used

in actual operation and have the user speak or sing at the loudest level

that occur during use, or set the output level of the instrument or audio

device to the maximum level that will be used.

4) Use the and arrow buttons to adjust the gain until the –10 dB glows

green and the –20 dB LED starts to ﬂicker red during the loudest peaks

in the audio.

5) Once the audio gain has been set, the signal can be sent through the

sound system for overall level adjustments, monitor settings, etc.

6) If the audio output level of the receiver is too high or low, use only the

controls on the receiver to make adjustments. Always leave the trans-

mitter gain adjustment set according to these instructions, and do not

change it to adjust the audio output level of the receiver.

LECTROSONICS, INC.10

Selecting Frequency

The setup screen for frequency selection offers several ways to browse the

available frequencies.

Freq.

b 19

494.500

Press MENU/

SEL to select

one of four

ﬁelds to make

adjustments

Gain

Freq.

ProgSw

Compat

Each ﬁeld will step through the available frequencies in a different increment.

The increments are also different in the 25 kHz mode from the 100 kHz mode.

Freq.

b 19

494.500

Freq.

b 19

494.500

These two ﬁelds step in 25 kHz

increments when the step size is 25

kHz and 100 kHz increments when

the step size is 100 kHz.

Freq.

b 19

494.500

Freq.

b 19

494.500

These two ﬁelds

always step in the

same increments

1 MHz steps

1 band steps

A fraction will appear next to the hex code in the setup screen and in the main

window when the frequency ends in .025, .050 or .075 MHz.

494.525

-40 -20 0

b 19

MUTE

Freq.

b 19

494.525

511

Fraction appears

next to hex code

in 25 kHz mode

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