Lectrosonics HM/E01 User manual

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Guide

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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/europe

HM/E01 Plug-On

Transmitter

15 September 2017

Digital Hybrid Wireless®

U.S. Patent 7,225,135

LECTROSONICS, INC.2

The HM Digital Hybrid®UHF plug-on transmitter features a DSP-based

design that allows the transmitter to operate in its native Digital Hybrid Wire-

less®mode, Lectrosonics 200 Series, 100 Series, IFB product groups, plus

three modes for compatibility with analog receivers from other manufacturers.

A unique multi-voltage phantom power feature allows the transmitter to be

used with virtually any microphone, including high-current condenser types,

expanding its usefulness in high-end applications such as motion picture

production.

The transmitter provides up to 1024 frequencies selected with the membrane

switch keypad. The input ampliﬁer uses an ultra low noise op-amp for quiet

operation. It is gain controlled with a wide range dual envelope limiter, provid-

ing over 30 dB of headroom above full modulation. A 24-bit A-D converter

digitizes the audio, then ﬁlters supersonic noise above 21 kHz. The resulting

signal is encoded with a proprietary algorithm to produce an analog data sig-

nal for RF transmission. The underlying RF link is an optimized FM system

with +/-75 kHz wide deviation for a high signal to noise ratio.

The antenna is formed between the lower housing of the transmitter and the

attached system. It functions as a dipole radiator when attached to a hand-

held microphone and somewhat like a ground plane antenna when con-

nected into a mixer. The conical shaped collar on the input coupler is made

of DuPontTM Delrin®to improve the ERP of the antenna in the uppermost

frequency blocks.

Operating Frequencies (MHz):

Block 470 470.100 - 495.600 MHz

Block 19 486.400 - 511.900 MHz

Block 20 512.000 - 537.500 MHz

Block 21 537.600 - 563.100 MHz

Block 22 563.200 - 588.700 MHz

Block 23 588.800 - 607.900 / 614.100 - 614.300 MHz

Block 24 614.400 - 639.900 MHz

Block 25 640.000 - 665.500 MHz

Block 26 665.600 - 691.100 MHz

RF Power output: 100 mW (nominal)

HM/E01 Plug-On Transmitter

www.lectrosonics.com 3

LCD Screen

Backlit for easy viewing in bright or dimly lit conditions.

Pwr (power) LED

Indicates power status and battery strength.

XLR Input Jack

Standard 3-pin Switchcraft XLR type. Coupler is spring-loaded to maintain a

snug ﬁt and to prevent noise.

Modulation LEDs

Provides a visual indication of the audio input signal level - either red or green

to indicate modulation levels.

AUDIO Button

Used to display the view and adjust the audio gain setting (0 dB to 44 dB).

FREQ Button

Used to set the operating frequency and toggle the LCD between the operating

frequency in MHz and a two-digit hexadecimal frequency code.

UP/DOWN Arrows

Used to view and select parameters and values during setup and operation.

Battery Compartment Cover

Hinged to housing to prevent loss.

Controls and Functions Battery

Compartment

Cover

XLR Input

Jack

AUDIO Button

LCD

Input

Coupler

FREQ Button

Modulation

LEDs

PWR LED

UP Arrow

DOWN Arrow

LECTROSONICS, INC.4

The HM transmitter is powered by two AA batteries. We recommend using

lithium batteries for longest life. Lithium batteries provide approximately 9

hours of operation at room temperature, without phantom power enabled.

The battery status circuitry is designed for the voltage drop over the life of

lithium batteries.

To install new batteries:

1) Slide the battery compartment door outward and swing it open.

2) Insert the new batteries into the housing. One battery goes in positive (+)

end ﬁrst, the other negative (–) end ﬁrst. Look into the battery compart-

ment to determine which end goes in which side. The side with the plastic

ring and smaller round opening is the side which must contact the (+) posi-

tive end of the battery. The other battery is inserted in the opposite polarity.

Note: It is possible to install the batteries backward and close the

battery door, but the batteries will not make contact and the unit will not

work.

3) Close the Battery Cover and slide it inward until it snaps shut.

Battery Installation

Battery

Compartment

Battery

Cover

positive (+)

terminal

negative (–)

terminal

www.lectrosonics.com 5

Operating Instructions

Power On

1) Ensure that good batteries are installed.

2) Simultaneously press and hold the AUDIO and

FREQ buttons as the timer counts from 1 to 3

(about 3 seconds).

Power Off

1) Simultaneously press and hold the AUDIO and

FREQ buttons while observing that the word

OFF and the counter in the LCD.

2) When the counter reaches 0, the unit turns off.

Note: If the AUDIO and FREQ buttons are released before the end of

the countdown, the unit will not turn off.

Standby Mode

From the OFF position, quickly press and release

both the AUDIO and FREQ buttons simultaneously

to enter and exit this mode. Adjustments and set-

tings can be checked or changed, but the unit will

not be transmitting to avoid interfering with other systems in the vicinity.

Selecting the Compatibility Mode

400 Series or Digital

Hybrid Wireless®

Compatibility Mode

Hold the UP arrow in, then press the AUDIO and

FREQ buttons at the same time. Press the AUDIO

button repeatedly until the compatibility mode

screen appears as shown here. Press the UP and

DOWN arrows to select the desired mode.

• 100 Series mode: CP 100

• 200 Series mode: CP 200

• Mode 3 (Contact factory for details): CP 3

• 400 Series mode: CP 400

• IFB Series mode: CP IFB

• Mode 6 (Contact factory for details): CP 6

Selecting the Audio Polarity

Pin 2

(+)

Pin 2

(–)

The input to the transmitter can be set for

XLR Pin 2 as positive (+) or negative (–) to

match the polarity of other mics being used.

Hold the UP arrow in, then press the AUDIO

and FREQ buttons at the same time. Press

the UP and DOWN arrows to select the

desired mode.

Initial Power On

Timer Screen

Initial Power Off

Timer Screen

Standby Screen

LECTROSONICS, INC.6

Selecting the Phantom Power and Low Freq Rolloff

Phantom power can

be set at 5, 15 or 48

volts or turned off

Low freq rolloff can

be set for -3dB at

35, 50 or 70 Hz

Brieﬂy press the AUDIO and

FREQ buttons at the same

time to enter the Standby

Mode. Then press and hold

the AUDIO button to enter the

setup screen. When the

button is released and

pressed again, the next screen will appear. Hold the button in when the

correct screen appears, then use the UP and DOWN buttons to select the

desired value.

LCD Backlight Setting

The LCD backlight can be set to stay on continuously or turn off after either

5 minutes or 30 seconds. Hold the UP arrow button in and power up the unit.

Press the AUDIO button repeatedly until the bL (backlight) screen appears,

then use the UP and DOWN arrow buttons to select the desired behavior.

Press AUDIO and FREQ at the same time to save the setting.

Selecting Step Size mode

Hold the UP arrow in while powering up the unit to enter the setup screen.

Press the AUDIO button repeatedly to step through the setup items to reach

the Step Size Mode screen. Use the UP or DOWN arrow button to select the

desired setting.

www.lectrosonics.com 7

Set Up in 100 kHz Mode

The Frequency Screen displays the operating

frequency in MHz or as a two-digit hexadecimal

number that corresponds to the equivalent

Lectrosonics Frequency Switch Setting. The

example of the two-digit display shown here

indicates CH (channel) and 2C as the frequen-

cy. Repeatedly pressing the FREQ button

toggles between the two displays. Press and

hold the FREQ button and use the Up and

Down arrows to select the frequency.

Set Up in 25kHz Mode

The hexidecimal display in the 25 kHz mode will appear with a decimal sufﬁx

to indicate the 25 kHz steps.

644.400 MHz

644.425 MHz

644.450 MHz

644.475 MHz

Setting Transmitter Operating Frequency

Frequency displayed as

two-digit hexadecimal

number

Frequency displayed

in MHz

The operating frequency of the HM is displayed

either in MHz or as a two-digit hexadecimal

number. Pressing the FREQ button toggles

between the two display modes. The frequency can

be set with the unit in Standby Mode or while

powered up for normal operation.

Note:You must ﬁrst ﬁnd a clear frequency

with the receiver, then set the transmitter to

match.

To change the Operating Frequency of the HM

transmitter:

1) Press the FREQ button to enter this screen.

2) While holding the FREQ button, use the UP or DOWN arrow buttons to

move the operating frequency up or down in 100 kHz increments from the

current setting. Holding the UP or DOWN arrows will cause rapid scrolling

through the frequencies.

Note: The operating frequency displayed on the LCD wraps as it

reaches the upper or lower end of its range.

LECTROSONICS, INC.8

Attaching a Microphone and Adjusting the Gain

TO AT TA CH

TO REMOVE

Hold the

transmitter

case with the

microphone

pointed

upward.

Rotate the

collar in the

direction

shown.

Pull on mic to ensure it is locked.

Press firmly, listen for click.

Depress collar fully.

Click!

To attach the mic, insert the

HM into the XLR connector.

Press the connector into the

microphone until the tapered

collar retracts and listen for a

“click” that indicates the

connector has locked onto the

microphone. Gently pull on the

mic to ensure proper locking

has occurred.

When removing the microphone from the HM, hold the transmitter in one

hand and twist the collar with the other hand until the microphone disengages.

Do not pull on the microphone as it may prevent the connector from releasing.

The front panel Modulation LEDs indicate limiter

activity. (See chart below.) Once set, the transmit-

ter’s audio level setting should not be used to

control the volume of your sound system or recorder levels. This gain adjust-

ment matches the transmitter gain with the microphone’s output level, the

user’s voice level and the microphone’s position. The audio input level can be

set with the unit in Standby Mode or powered up for normal operation.

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

Different voices will usually require different

gain settings, so check this adjustment for

each person using the system. If several

different people will be using the transmit-

ter, set it for the loudest voice.

1) Set the required phantom power mode

before attaching the microphone.

2) Brieﬂy press the AUDIO and FREQ buttons at the same time, then press

and hold the AUDIO button to enter the setup screen.

3) Use the microphone in the manner in which it will be actually used.

4) Observe the HM audio level LEDs while speaking or singing into the micro-

phone at the same voice level that will be used during the program. While

holding the AUDIO button, press the UP or DOWN arrow buttons until the

both the -20 and -10 LEDs glow green, with the -20 LED occasionally ﬂick-

ering red (+0 dB to +10 dB range during peaks).

Note: Setting the audio level too high reduces the dynamic range of the

audio signal. Setting the audio level too low may cause hiss and noise

in the audio.

www.lectrosonics.com 9

Using the Polarity-Reversing

Barrel Adapter with

Measurement Microphones

A polarity adapter may be needed if

you experience noise, low output or

distortion with meaasurement micro-

phones such as Earthworks M30 or

Rode NTG3.

Insert the barrel adapter provided with

the HM transmitter between the micro-

phone and transmitter as shown.

NOTE: This adapter is included

with the TM400 test and

measurement system, but is

available as a separate item

with the HM transmitter and

other wireless equipment.

Important: The only way to unlock a locked transmitter is to remove the

battery. It cannot be unlocked or powered off using the buttons. The unit will

always power up in “unlocked” mode.

Measurement

microphone

P/N 21750

barrel adapter

Locking or Unlocking the Control Panel

The Lock mode protects the transmitter from

accidental changes to its settings.

1) Ensure the HM setup is complete.

2) Simultaneously press both the UP and DOWN

arrow buttons to start the Lock timer. When the

timer reaches zero, “Loc” is displayed and the

controls are locked.

LECTROSONICS, INC.10

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