LT-E01 Digital Hybrid Wireless Belt Pack Transmitter

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Product Information

Specifications

• Models: LT, LT/E01, LT/E06, LT/X

• Power Supply: Switching power supply with constant
  voltages

• Input Gain: Adjustable over a 44 dB range

• Dynamic Range: DSP-controlled dual envelope input limiter
  handles peaks over 30 dB

• Wireless System: Digital Hybrid Wireless

• RF Link: Analog FM wireless link

Product Usage Instructions

Quick Start Steps

1. Install good batteries and turn the power on.

2. Set the compatibility mode to match the receiver.

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

4. Set Step Size and frequency to match the receiver.

5. Turn on the receiver and verify solid RF and audio
   signals.

Detailed Usage Steps

1. Battery Installation: Open the battery
   compartment and insert good batteries following the correct
   polarity. Close the compartment securely.

2. Compatibility Mode: Access the settings menu
   and select the appropriate compatibility mode based on the receiver
   being used.

3. Signal Connection: Connect the signal source
   to the transmitter using the provided cables. Adjust the input gain
   knob to achieve the desired modulation level.

4. Frequency Matching: Set the Step Size and
   frequency on the transmitter to match the receiver’s settings for
   optimal performance.

5. Receiver Verification: Turn on the receiver
   and ensure that both RF and audio signals are strong and clear,
   following the instructions in the receiver manual if needed.

Frequently Asked Questions (FAQ)

Q: How do I protect the transmitter from moisture damage?

A: To protect the transmitter from moisture,
such as talent’s sweat, wrap the LT in a plastic baggie or use the
LTCVR accessory as mentioned in the manual.

Q: How does the Digital Hybrid Wireless system handle channel

noise?

A: The system digitally encodes audio in the
transmitter and decodes it in the receiver, sending the information
via an analog FM wireless link. This unique algorithm minimizes
channel noise impact elegantly, especially in weak signal
conditions.

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INSTRUCTION MANUAL
LT
Digital Hybrid Wireless® Belt-Pack Transmitter
LT, LT/E01, LT/E06, LT/X

Quick Start Steps

1. Install good batteries and turn power on (see pages 6 – 8).
2. Set the compatibility mode to match the receiver (see page 11).
3. Connect the signal source and adjust input gain for optimum modulation level (see pages 11 and 12).
4. Set Step Size and frequency to match receiver (see page 12). Also see receiver manual for scanning procedure to find a clear operating frequency.
5. Turn on the receiver and verify that solid RF and audio signals are present (see receiver manual).
   WARNING: Moisture, including talent’s sweat, will damage the transmitter. Wrap the LT in a plastic baggie or other protection to avoid damage, or see the LTCVR.

Fill in for your records: Serial Number: Purchase Date:

US Patent 7,225,135

Rio Rancho, NM, USA www.lectrosonics.com

LT, LT/E01, LT/E06, LT/X

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LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter
Table of Contents
Quick Start Steps……………………………………………………………………………………………………………………………………………………………1 Introduction………………………………………………………………………………………………………………………………………………………………………4
About Digital Hybrid Wireless® …………………………………………………………………………………………………………………………………………4 Frequency Agility ……………………………………………………………………………………………………………………………………………………………4 Wide-Band Deviation………………………………………………………………………………………………………………………………………………………4 Servo Bias Input and Wiring…………………………………………………………………………………………………………………………………………….4 DSP- controlled Input Limiter……………………………………………………………………………………………………………………………………………5 No Pre-Emphasis/De-Emphasis ………………………………………………………………………………………………………………………………………5 Pilot Tone Squelch ………………………………………………………………………………………………………………………………………………………….5 LT Block Diagram……………………………………………………………………………………………………………………………………………………………5 Battery Installation ……………………………………………………………………………………………………………………………………………………………6 Belt Clips ………………………………………………………………………………………………………………………………………………………………………….6 IR (infrared) Sync ………………………………………………………………………………………………………………………………………………………………6 Operating Instructions ………………………………………………………………………………………………………………………………………………………7 Battery Status LED Indicator……………………………………………………………………………………………………………………………………………7 Powering On in Operating Mode………………………………………………………………………………………………………………………………………7 Powering On in Standby Mode ………………………………………………………………………………………………………………………………………..8 Powering Off ………………………………………………………………………………………………………………………………………………………………….8 Entering the Main Menu ………………………………………………………………………………………………………………………………………………….8 Entering the Power Menu………………………………………………………………………………………………………………………………………………..8 RF ON/OFF on the Main and Power Menu Options……………………………………………………………………………………………………………8 LCD Menu Map …………………………………………………………………………………………………………………………………………………………………9 Power Menu Options…………………………………………………………………………………………………………………………………………………………9 Main Menu and Setup Screen Details ………………………………………………………………………………………………………………………………10 Locking/Unlocking Changes to Settings …………………………………………………………………………………………………………………………10 Selecting Programmable Switch Functions …………………………………………………………………………………………………………………….10 Main Window Indicators………………………………………………………………………………………………………………………………………………..10 Selecting the Compatibility (Compat) Mode ……………………………………………………………………………………………………………………11 Connecting the Signal Source………………………………………………………………………………………………………………………………………..11 Using Line Level and Instrument Inputs …………………………………………………………………………………………………………………………11 Selecting the Low Frequency Roll- off……………………………………………………………………………………………………………………………..11 Adjusting the Input Gain………………………………………………………………………………………………………………………………………………..12 Selecting Step Size……………………………………………………………………………………………………………………………………………………….12 Selecting Frequency ……………………………………………………………………………………………………………………………………………………..12 Selecting Frequency Using Two Buttons…………………………………………………………………………………………………………………………13 Helpful Features on Receivers ……………………………………………………………………………………………………………………………………….13 About Overlapping Frequency Bands……………………………………………………………………………………………………………………………..13 Selecting Audio Polarity (Phase)…………………………………………………………………………………………………………………………………….13 Selecting Battery Type…………………………………………………………………………………………………………………………………………………..13 Setting Transmitter Output Power ………………………………………………………………………………………………………………………………….14 Restoring Default Settings …………………………………………………………………………………………………………………………………………….14 IR Sync Operation…………………………………………………………………………………………………………………………………………………………14 LectroRM………………………………………………………………………………………………………………………………………………………………………..15 Supplied and Optional Accessories………………………………………………………………………………………………………………………………….16 5-Pin Input Jack Wiring……………………………………………………………………………………………………………………………………………………17 Microphone Cable Terminationfor Non-Lectrosonics Microphones …………………………………………………………………………………..18 Input Jack Wiring for Different Sources ……………………………………………………………………………………………………………………………19 Microphone RF Bypassing …………………………………………………………………………………………………………………………………………….20 Line Level Signals …………………………………………………………………………………………………………………………………………………………20 Firmware Update …………………………………………………………………………………………………………………………………………………………….21 Troubleshooting ……………………………………………………………………………………………………………………………………………………………… 23 Specifications …………………………………………………………………………………………………………………………………………………………………24 Service and Repair ………………………………………………………………………………………………………………………………………………………….25 Returning Units for Repair……………………………………………………………………………………………………………………………………………..25

Rio Rancho, NM

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LT, LT/E01, LT/E06, LT/X

Introduction
The design of the LT transmitter delivers the advanced technology and features of Digital Hybrid Wireless® in a Lectrosonics belt-pack transmitter at a modest cost. Digital Hybrid Wireless® combines a 24-bit digital audio chain with an analog FM radio link to eliminate a compandor and its artifacts, yet preserve the extended operating range and noise rejection of the finest analog wireless systems. DSP “compatibility modes” allow the LT to also be used with a variety of analog receivers by emulating the compandors found in earlier Lectrosonics analog wireless and IFB receivers, and certain receivers from other manufacturers (contact the factory for details).
The housing is a rugged, machined aluminum package with removable, stainless steel wire belt clip. The input jack is a standard Lectrosonics 5-pin type for use with electret lavaliere mics, dynamic mics, musical instrument pickups and line level signals. The LEDs on the top panel allow quick and accurate level settings without having to view the receiver. The unit is powered by two AA batteries. The antenna port uses a standard 50 ohm SMA connector. Straight and hinged whip antennas are available.
The switching power supplies in the LT provide constant voltages to the transmitter circuits from the beginning to the end of battery life, with output power remaining constant over the life of the battery. The input amplifier uses an ultra low noise op amp. Input gain is adjustable over a 44 dB range, with a DSP-controlled dual envelope input limiter that will cleanly handle signal peaks over 30 dB above full modulation.
About Digital Hybrid Wireless®
All wireless links suffer from channel noise to some degree, and all wireless microphone systems seek to minimize the impact of that noise on the desired signal. Conventional analog systems use compandors for enhanced dynamic range, at the cost of subtle artifacts (known as “pumping” and “breathing”). Wholly digital systems defeat the noise by sending the audio information in digital form, at the cost of some combination of power, bandwidth, operating range and resistance to interference.
The Lectrosonics Digital Hybrid Wireless system overcomes channel noise in a dramatically new way, digitally encoding the audio in the transmitter and decoding it in the receiver, yet still sending the encoded information via an analog FM wireless link. This proprietary algorithm is not a digital implementation of an analog compandor but a technique which can be accomplished only in the digital domain.
Since the RF link between transmitter and receiver is FM, channel noise will increase gradually with increased operating range and weak signal conditions, however, the Digital Hybrid Wireles system handles this situation elegantly with rarely audible audio artifacts as the receiver approaches its squelch threshold.
In contrast, a purely digital system tends to drop the audio suddenly during brief dropouts and weak signal

conditions. The Digital Hybrid Wireless system simply encodes the signal to use a noisy channel as efficiently and robustly as possible, yielding audio performance that rivals that of purely digital systems, without the power, noise and bandwidth problems inherent in digital transmission. Because it uses an analog FM link, Digital Hybrid Wireless enjoys all the benefits of conventional FM wireless systems, such as excellent range, efficient use of RF spectrum, and long battery life.
Frequency Agility
Frequency selection is provided in 100 kHz or 25 kHz steps with up to 3072 channels available covering three standard Lectrosonics 25.6 MHz bands, except band 606. Frequencies are displayed on the LCD in MHz and in a hex code used with earlier Lectrosonics equipment.
Wide-Band Deviation
Deviation has a direct effect on the dynamic range and signal to noise ratio of an FM system. The greater the deviation, the wider the dynamic range and the better the signal to noise ratio. In the Nu Hybrid compatibility mode, the system operates with a maximum of +/-75 kHz of deviation. The resulting 180 kHz of occupied bandwidth just fits inside the government specified spectral mask of 200 kHz. In order to make this possible, an advanced, DSP-controlled limiter is used to prevent signal peaks from exceeding the maximum allowed bandwidth, but not cause distortion.
The result of all this is that the audio quality is outstanding, rivaling a hard-wired microphone. The system delivers a very wide dynamic range, and can handle loud signal peaks without distortion.
Servo Bias Input and Wiring
The LT input preamp is a unique design that delivers audible improvements over conventional transmitter inputs. The transmitters are easier to use and much harder to overload. It is not necessary to introduce pads on some mics to prevent overload of the input stage, divide the bias voltage down for some low voltage mics, or reduce the limiter range at minimum gain settings.
Two different microphone wiring schemes are available to simplify and standardize the configuration. Simplified 2-wire and 3-wire configurations provide several arrangements designed for use only with servo bias inputs to take full advantage of the preamp circuitry. Other wiring schemes are compatible with Servo Bias and conventional inputs.
A line level input wiring provides an extended frequency response with an LF roll-off at 35 Hz for use with instruments and line level signal sources.

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LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

DSP-controlled Input Limiter
The transmitter employs a digitally-controlled analog audio limiter prior to the analog-to-digital converter. The limiter has a range greater than 30 dB for excellent overload protection. A dual release envelope makes the limiter acoustically transparent while maintaining low distortion. It can be thought of as two limiters in series, connected as a fast attack and release limiter followed by a slow attack and release limiter. The limiter recovers quickly from brief transients, so that its action is hidden from the listener, but recovers slowly from sustained high levels to keep audio distortion low and preserve short term dynamic changes in the audio.
No Pre-Emphasis/De-Emphasis
Because the signal to noise ratio of the Digital Hybrid Wireless system is so high, there is no need for conventional pre-emphasis (HF boost) in the transmitter and deemphasis (HF roll off) in the receiver. Thus, the potential distortion problems associated with pre-emphasis and de-emphasis are eliminated.

Pilot Tone Squelch
The squelch system in a receiver is a method of muting the audio when the RF signal conditions are too poor to produce usable audio. While not all squelch systems work the same way, the goal is always the same: to discard noise and unusable audio.
The Digital Hybrid Wireless system employs a DSP-generated supersonic tone (pilot tone), using it as a kind of signature, so the receiver can mute even strong signals that aren’t from the appropriate transmitter. The pilot tone also helps to ensure that the receiver is quiet when the transmitter is turned on and off.
256 different pilot tones provide reliable operation in multi-channel wireless systems. A different tone is generated every 100 kHz across the tuning range of the system, so that a tone is not repeated until it is 25.6 MHz above or below the previous one.

LT Block Diagram

+5V
Input Jack

Servo Bias Bias Voltage

Supply

0, 2 or 4V

A-D Converter

Input Preamp

Gain Split

AUDIO

Gain

I2S

Adj

Shunt Limiter

Limiter Control

D-A Converter
I2S

DSP Clock

Bicolor Modulation
LEDs

Microprocessor with internal clock

Encoded Audio and Pilot Tone

LT Transmitter
Buffer Amp and Filter

(2) AA Batteries

Switching Power Supply

Tricolor Power LED
AUDIO

Oscillator

Keypad

Oscillator

PLL Ref

Phase Locked Loop

Voltage Controlled Oscillator
Control

Driver

Final Amplifier

Filters (3)

Rio Rancho, NM

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LT, LT/E01, LT/E06, LT/X

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 compensates 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 Digital Hybrid Wireless receivers.
Push outward on the battery compartment door and lift it to open.

If the batteries are inserted incorrectly, the door will close but the unit will not operate.
The battery contacts can be cleaned with alcohol and a cotton swab, or a clean pencil eraser. Be sure not to leave any remnants of the cotton swab or eraser crumbs inside the compartment.

Insert the batteries according to the markings on the back of the housing.

Contact springs

Belt Clips
The wire belt clip may be removed by pulling the ends out of the holes in the sides of the case. Use pliers to grasp the wire and avoid scratching the surface of the housing. Pliers also help when installing the clip.
An optional spring-loaded, hinged belt clip (model number BCSLEBN) is also available. This clip is attached by removing the plastic hole cap on the back of the housing and mounting the clip with the supplied screw.

IR (infrared) Sync
The opening on the keypad is an IR port for quick setup using a receiver with this function available. IR Sync will transfer the settings for frequency, step size and compatibility mode from the receiver to the transmitter. Refer to your page 13 of this manual and to the receiver manual for details.
IR Port

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NOTE: If a mismatch exists between the receiver and transmitter, an error message will appear on the transmitter LCD stating what the problem is. See page 13 for more information.

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LECTROSONICS, INC.

Operating Instructions

Digital Hybrid Wireless Belt-Pack Transmitter

Modulation Indicators

Power/Function LED

Antenna Port

-10 AUDIO
-20

PWR/FUNC

Programmable Function Switch
Audio Input Jack

Full access to all settings is provided through the keypad and LCD. The transmitter can also be configured as a “one button” device by locking the ability to make changes with the keypad, and configuring the top panel switch as either power on/off or a mute function.

Battery Status LED
Belt clip mounting hole
Battery Compartment
Door

55b A119
642934..450000

–4400

–2200

00

Belt clip mounting hole
USB Port

Battery Status LED Indicator
Alkaline, lithium or rechargeable batteries can be used to power the transmitter. The type of batteries in use are selectable in a menu on the LCD.
When alkaline or lithium batteries are being used, the LED labeled BATT on the keypad glows green when the batteries are good. The color changes to red when the battery voltage drops down and stays red through most of the battery life. When the LED begins to blink red, there will be only a few minutes remaining.
The exact point at which the LEDs turn red will vary with battery brand and condition, temperature and power consumption. The LEDs are intended to simply catch your attention, not to be an exact indicator of remaining time.
The Power/Function LED on the top panel will mirror the keypad LED unless the programmable switch is set to the Mute or Talkback mode, and the switch is turned on.
A weak battery will sometimes cause the LED to glow green immediately after the transmitter is turned on, but it will soon discharge to the point where the LED will turn red or the unit will turn off completely.
Rechargeable batteries give little or no warning when they are depleted. If you wish to use these batteries in the transmitter, you will need to manually keep track of the operating time to prevent interruptions caused by dead batteries.

Start with a fully charged battery, then measure the time it takes for the Power LED to go out completely.
NOTE: The battery timer feature in many Lectrosonics receivers is very helpful in measuring battery runtime when using rechargeable batteries. Refer to the receiver instructions for details on using the timer.

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 band and compatibility mode.

Hold for Rf On …3

LT V6.0 Blk. A1
NuH

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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.

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LT, LT/E01, LT/E06, LT/X

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.

RF indicator blinks

Hold for Rf On …1

Release Power Button before
the counter reaches 3 to enter standby
mode

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After settings and adjustments are made, press the power button again to turn the unit off.
NOTE: Also see the section entitled Entering The Power Menu for the AutoOn feature.

Powering Off

Powering

From any screen, power can be turned off by selecting Pwr Off in the power

Off . . .

menu, holding the Power Button in

and waiting for the countdown, or with

the programmable switch (if it is

1

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.

Entering the Main Menu
The LCD and keypad interface makes it easy to browse the menus and make the selections for the setup you need. 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 setup screen.

Gain LineIn Freq. ProgSw

Gain 25

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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.

8

Entering the Power Menu
Press the power button from any menu or screen and a menu with appear with several options. Use the and
arrow buttons to select the menu item. Then press MENU/SEL to execute the item or enter a setup screen. See opposite page for details.

Resume Pwr Off Rf On? AutoOn?

Resume Pwr Off Rf On? AutoOn?

Resume and Pwr Off will execute the command immediately

Resume and Pwr Off will execute the command immediately. The other menu items will open a screen asking for a value to be selected.
The screens that prompt for a selection to be made are straightforward as in this example. Use the UP and DOWN arrows to highlight the desired selection an press MENU/SEL or BACK to confirm it.

Resume Pwr Off Rf On? AutoOn?

AutoOn?
No Ye s

RF ON/OFF on the Main and Power Menus
The RF output of the transmitter can be turned off and on with a menu item on both the main menu and on the power menu.
Rf On? in the main menu:

StepSiz Phase Locked Rf On?

Rf On?
No Ye s

Rf On? in the power menu:

Resume Pwr Off Rf On? AutoOn?

Press MENU/SEL and the power will turn off
immediately.

Power Menu Options
A special options menu is provided by pressing the power button quickly when the unit is turned on in either the Operating or Standby modes. Use the and arrow buttons to select the menu item.
· Resume – returns to the previous mode and screen
· Pwr Off – turns the unit off
LECTROSONICS, INC.

· Rf On? – enters a screen to enable the operating or standby modes
· AutoOn? – allows the unit to automatically turn back on after a power failure or when fresh batteries are installed (works in the operating mode only)
· Backlit – adjusts the duration of the LCD back light to 30 seconds or 5 minutes, or to remain on
· LED Off – turns the LEDs on (Normal) or off (Dark)
· About – displays the installed firmware version

Digital Hybrid Wireless Belt-Pack Transmitter
· Blk606? – Band B1 and C1 LT transmitters can be used with legacy Block 606 Lectrosonics receivers by invoking a special Block 606 legacy mode (Introduced in Firmware version v2.04) so that the correct pilot tones will be present. Use the and arrow buttons to select Legacy and MENU/SEL to save the option. This option is for E01 models only.
NOTE: Neither Band B1 nor Band C1 includes all Block 606 frequencies.
“Legacy” refers to SRb/E01-606 receivers, as

LCD Menu Map

Gain

SEL

Gain 22

BACK

Select from listing

Use arrow keys to select input gain

LineIn SEL

Polarity

BACK

Freq. SEL

Freq

BACK

SEL

ProgSw

ProgSw BACK

Rolloff

SEL

Rolloff

BACK

70 Hz

Line Instr.
b 21 80
550.400
TalkBk Power Mute (none)
Select from listing

Use arrow keys to select audio output polarity

Use arrow keys to select desired frequency

Press SEL to select desired adjustment

Use arrow keys to select LCD backlight duration

Use arrow keys to select input gain

Compat

SEL

Compat

BACK

Hybrid

Select from listing

Use arrow keys to select compatibility mode

StepSiz SEL

StepSiz

BACK

100 kHz 25 kHz

Use arrow keys to select frequency step size

SEL

Phase

Phase

BACK

Pos. Neg.

Use arrow keys to select audio output polarity

Locked SEL

Locked?

BACK

Yes No

Use arrow keys to lock/unlock keypad

SEL

Rf On?

Rf On? BACK

No Yes

Use arrow keys to turn Rf signal on/off

SEL

BatType

BatType BACK

Alk. Lith.

Use arrow keys to choose battery type

Remote SEL

Remote

BACK

Enable Ignore

Use arrow keys to enable/disable remote

SEL

TxPower

TxPower BACK

50 mW 100 mW

Use arrow keys to select RF power output

SEL

Default

Default

settings BACK

No Yes

Use arrow keys to return transmitter to default factory settings

Rio Rancho, NM

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LT, LT/E01, LT/E06, LT/X

Main Menu and Setup Screen Details
Locking/Unlocking Changes to Settings
Changes to the settings can be locked.

Locked Rf On? B a t Ty p e Remote

Locked?
No Ye s

Gain 25

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A small padlock symbol will appear on adjustment screens when changes have been locked.

When changes are locked, several controls and actions can still be used:
· Settings can still be unlocked
· Menus can still be browsed
· Programmable switch still works
· Power can still be turned off by using the power menu or removing the batteries.

Selecting Programmable Switch Functions
The programmable switch on the top panel can be configured using the menu to provide several functions:
· Power – turns the power on and off
· Mute – mutes the audio when switched on
· TalkBk (talkback) – redirects the audio to a different output channel on the receiver (with receivers that offer this function)
· (none) – disables the switch

Gain LineIn Freq. ProgSw

ProgSw Power

ProgSw Mute

ProgSw Ta l k B k

ProgSw (none)

Use the and arrow buttons to select the desired function or disable the switch

NOTE: The programmable switch will continue to operate whether or not keypad changes are locked.

Main Window Indicators

The Main Window displays the band 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.

Block number

Operating mode

Frequency (hex number)
Frequency (MHz)

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Battery status
Programmable switch function

Audio level
When the frequency step size is set to 25 kHz, the hex number will appear smaller and may include a fraction.
Fraction

1/4 = .025 MHz 1/2 = .050 MHz 3/4 = .075 MHz

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Note that the frequency has increased by 25 kHz from the upper
example.

Changing the step size never changes the frequency. It only changes the way the user interface works. If the frequency is set to a fractional increment between even 100 kHz steps and the step size is changed to 100 kHz, the hex code will be replaced by two asterisks on the main screen and the frequency screen.
Frequency set to fractional 25 kHz step, but step size changed to 100 kHz.

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If the programmable switch function is set for Mute, the Main Window will indicate that the function is enabled.

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Mute function enabled but not active

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When the switch is turned on, the mute icon appearance will change, the word MUTE will blink at the bottom of the display, and the power/function LED will blink blue.

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LECTROSONICS, INC.

PWR/FUNC

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<­MUTE­>

Main Window will blink the word MUTE when
the audio is muted
Top Panel LED will blink blue when the
audio is muted

-10 AUDIO
-20

If the programmable switch function is set for Talkback, the Main Window will indicate that the function is enabled but not active.

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Talkback function is enabled but not active

When the programmable switch is turned on, the talkback icon appearance will change and the power/function LED will glow blue.

PWR/FUNC

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The TB icon will change when
Talkback is active
Top Panel LED will glow blue when Talkback is active

-10 AUDIO
-20

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 compatibility mode.

Rolloff Compat StepSiz Phase

Compat Nu Hybrid

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:

Receiver Models

LCD menu item

· 100 Series (LT/X):

100 Mode

· 200 Series: (LT/X)

200 Mode

· Mode 3:* (LT/X)

Mode 3

· Digital Hybrid Wireless®: (E01/E06/X)

Hybrid

· IFB Series: (E01/E06/X)

IFB Mode

Rio Rancho, NM

Digital Hybrid Wireless Belt-Pack Transmitter

· Mode 6:*

Mode 6 (LT/X)

· Mode 7:*

Mode 7 (LT/X)

100 Series works with Lectrosonics UCR100 analog receivers.

200 Series works with Lectrosonics earlier UCR201/205/210D/211 and UCR195 analog receivers with dual band compandors.

Mode 3* works with certain non-Lectrosonics models.

Digital Hybrid Wireless® works with all Lectrosonics Digital Hybrid receivers. The receiver must also be set to the Digital Hybrid compatibility mode.

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

Mode 6* works with certain non-Lectrosonics models.

Mode 7* works with certain non-Lectrosonics models.

• Contact the factory for details of these modes

NOTE: If your Lectrosonics receiver does not have Nu Hybrid mode, set the receiver to Euro Digital Hybrid Wireless® (EU Dig. Hybrid).

Connecting the Signal Source
Microphones, line level audio sources and instruments can be used with the transmitter. Refer to the section entitled Wiring Hookups for Different Sources for details on the correct wiring for line level sources and microphones to take full advantage of the Servo Bias circuitry.

Using Line Level and Instrument Inputs
Two types of high levels signals can be used with the transmitter:
· Line Used with line level outputs from recorders, mixers and other audio devices.
· Instr. (instrument) A special type of high impedance input with an active preamp for an optimal match with instrument pickups.

Gain LineIn Freq. ProgSw

LineIn
Line Instr.

LineIn
Line Instr.

The wiring of the connector is the same for both types of inputs.

Selecting the Low Frequency Roll-off
Low frequency audio content may be desirable or distracting, so the point at which the roll-off takes place can be set to 35, 50, 70, 100, 120 and 150 Hz.

Rolloff Compat StepSiz Phase

Rolloff 70 Hz

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LT, LT/E01, LT/E06, LT/X

Adjusting the Input Gain

The two bicolor Modulation LEDs on the control panel 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 following 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.

Gain LineIn Freq. ProgSw

Gain 25

-40

-20

0

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 will 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 transmitter gain adjustment set according to these instructions, and do not change it to adjust the audio output level of the receiver.

Selecting Step Size
This menu item allows frequencies to be selected in either 100 kHz or 25 kHz increments.

Rolloff Compat StepSiz Phase

StepSiz

StepSiz

100 kHz 25 kHz

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 Lectrosonics Digital Hybrid Wireless® receivers provide a scanning function to quickly 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.

Selecting Frequency
The setup screen for frequency selection offers several ways to browse the available frequencies.

Gain LineIn Freq. ProgSw

Freq. b 19
51
494.500

Press MENU/ SEL to select
one of four fields to make adjustments

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 51
494.500
Freq. b 19 51
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
51
494.500

These two fields always step in the same increments
1 band steps
1 MHz steps

Freq. b 19
51
494.500

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LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

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.

Freq. b 19

5

1

1 4

494.525

Fraction appears next to hex code in 25 kHz mode

b 19 51 1
4 MUTE
494.525

-40

-20

0

Selecting Frequency Using Two Buttons

Hold the MENU/SEL button in, then use the and arrow buttons for alternate increments.

100 kHz Mode

1 block steps

1 MHz steps

Freq. b 19
51
494.500

100 kHz steps 100 kHz

25 kHz Mode

1 MHz steps

Freq. b 19

5

1

1 4

494.525

1 block steps 25 kHz steps 25 kHz steps

If the Step Size is 25 kHz with the frequency set between even 100 kHz steps and the Step Size is then changed to 100 kHz, the mismatch will cause the hex code to display as two asterisks.

Freq. b 19
**
494.500

Step Size and Frequency mismatch

b 19
MUTE
494.525

-40

-20

0

Helpful Features on Receivers
To aid in finding clear frequencies, several Lectrosonics receivers offer a SmartTune feature that scans the tuning range of the receiver and displays a graphical report that shows where RF signals are present at different levels, and areas where there is little or no RF energy present. The software then automatically selects the best channel for operation.
Lectrosonics receivers equipped with an IR Sync function allow the receiver to set frequency, step size and compatibility modes on the transmitter via an infrared link between the two units.

About Overlapping Frequency Bands
When two frequency bands overlap, it is possible to select the same frequency at the upper end of one and the lower end of the other. While the frequency will be the same, the pilot tones will be different, as indicated by the hex codes that appear.
In the following examples, the frequency is set to 494.500 MHz, but one is in band 470 and the other in band 19. This is done intentionally to maintain compatibility with receivers that tune across a single band. The band number and hex code must match the receiver to enable the correct pilot tone.

Freq. b 19
51
494.500

Freq. b470
F4
494.500

Make sure the band number and hex code match the receiver setting

Selecting Audio Polarity (Phase)
Audio polarity can be inverted at the transmitter so the audio can be mixed with other microphones without comb filtering. The polarity can also be inverted at the receiver outputs.

Rolloff Compat StepSiz Phase

Phase
Pos. Neg.

Selecting Battery Type
The voltage drop over the life of different batteries varies by type and brand. Be sure to set the correct battery type for accurate indications and warnings. The menu offers alkaline or lithium types.

Locked Rf On? B a t Ty p e Remote

B a t Ty p e
Alk. Lith.

If you are using rechargeable batteries, it is better to use the timer function on the receiver to monitor the battery life rather than the indicators on the transmitter. The timer is available on all Lectrosonics Digital Hybrid Wireless® receivers. Rechargeable batteries maintain a fairly constant voltage across the operating time on each charge and stop working abruptly, so you will have little or no warning as they reach the end of operation.

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LT, LT/E01, LT/E06, LT/X

Enabling Remote Control
Transmitter settings can be configured using special tones generated by a smartphone using a remote control application such as Lectro RM (available on the AppStore or Google Play). Enable this feature on the transmitter with the following menu items.

B a t Ty p e Remote TxPower Default

Remote
Enable Ignore

The following settings can be configured: · Tx Input Gain · Sleep/Unsleep · Lock/Unlock · Tx power output · Frequency

Setting Transmitter Output Power
The output power can be set to 50 mW or 100 mW.

B a t Ty p e Remote TxPower Default

TxPower
50 mW 100 mW

IR Sync Operation
A Lectrosonics receiver with IR Sync capability can transfer the settings for Frequency, Step Size and Compatibility mode to the transmitter via the IR ports. The transfer is triggered by a switch in the receiver. When the settings are successfully transferred, a confirmation will appear on the transmitter LCD.
IR Sync
OK

If a mismatch exists and the transfer cannot be completed, an error message will appear on the transmitter LCD indicating what the problem is.

IR Sync

IR Sync

BLOCK Mismatch

C O M PAT Mismatch

BLOCK Mismatch indicates that the transmitter and receiver are on different frequency blocks and the frequency cannot be set to match. COMPAT Mismatch will appear when the compatibility mode in the receiver is not available in the transmitters; for example, when you are trying to sync a US model to work an export model.

Restoring Default Settings
This is used to restore the factory settings.

B a t Ty p e Remote TxPower Default

Default settings
No Ye s

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LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

LectroRM
By New Endian LLC
LectroRM is a mobile application for iOS and Android operating systems. Its purpose is to remotely control Lectrosonics Transmitters, including:
· SM Series
· WM
· L Series
The app remotely changes settings on the transmitter through the use of encoded audio tones, which when received by the attached microphone, will alter the configured setting. The app was released by New Endian, LLC in September 2011. The app is available for download and sells for $25 on the Apple App Store and Google Play Store.
LectroRM’s remote control mechanism is the use of an audio sequence of tones (dweedles) that are interpreted by the transmitter as a configuration change. The settings available in LectroRM are:
· Audio Level
· Frequency
· Sleep Mode
· Lock Mode
User Interface
The user interface involves selecting the audio sequence related to the desired change. Each version has an interface for selecting the desired setting and the desired option for that setting. Each version also has a mechanism to prevent accidental activation of the tone.
iOS

Android
The Android version keeps all settings on the same page and allows the user to toggle between the activation buttons for each setting. The activation button must be long pressed to activate. The Android version also allows users to keep a configurable list of full sets of settings.
Activation
For a transmitter to respond to remote control audio tones, the transmitter must meet certain requirements:
· The transmitter must not be turned off; it can however be in sleep mode.
· The transmitter must have firmware version 1.5 or later for Audio, Frequency, Sleep and Lock changes.
· The transmitter microphone must be within range.
· The transmitter must be configured to enable remote control activation.
Please be aware this app is not a Lectrosonics product. It is privately owned and operated by New Endian LLC, www.newendian.com.

The iPhone version keeps each available setting on a separate page with the list of options for that setting. On iOS, the “Activate” toggle switch must be enabled to show the button which will then activate the audio. The iOS version’s default orientation is upside-down but can be configured to orient right-side up. The purpose for this is to orient the device’s speaker, which is at the bottom of the device, closer to the transmitter microphone.

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LT, LT/E01, LT/E06, LT/X

Supplied Accessories

26895

Wire belt clip (installed on the trans mitter)

40096

(2) Alkaline AA batteries

AMM (xx)

Antenna supplied according to fre quency range. AMM19 for A1; AMM22 for B1.

Optional Accessories

BCSLEBN

Spring-loaded belt clip

LTBATELIM

Battery eliminator; allows transmitter to be operated from external power; 6 to 36 VDC

LTCVR

Silicone cover protects from moisture and dust

M152/5P

Lavaliere microphone; omnidirectional

MI33PRA

Instrument cable; passive type for use with very high output pickups; right angle 1/4″ plug

MI33PST
MI39AST straight MC35

Instrument cable; passive type for use with very high output pickups; straight 1/4″ plug
Instrument cable; active type for use with most instrument pickups;
1/4″ plug
Line level adapter cable; XLR-F to TA5F; 37″ length

MC41

Dynamic mic level adapter cable; XLR-F to TA5F; 37″ length

MC49 MC47

Line level input cable; TA3F to TA5F; 12″ length
Line level (-10dBv) input cable; RCA male to TA5F; 37″ length

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LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

2.7K

5-Pin Input Jack Wiring
The wiring diagrams included in this section represent the basic wiring necessary for the most common types of microphones and other audio inputs. Some microphones may require extra jumpers or a slight variation on the diagrams shown.
It is virtually impossible to keep completely up to date on changes that other manufacturers make to their products, thus you may encounter a microphone that differs from these instructions. If this occurs please call our toll-free number listed under Service and Repair in this manual or visit our web site at:
www.lectrosonics.com
+5 VDC

1k 500 Ohm

Servo Bias

1

GND

100 Ohm

Pin 4 to Pin 1 = 0 V

2

5V SOURCE

+ 15uF

Pin 4 Open = 2 V Pin 4 to Pin 2 = 4 V

3

MIC

4

VOLTAGE SELECT

200 Ohm

30uF

5

LINE IN

+ 3.3uF
10k

To Audio Amplifier To Limiter Control

Audio input jack wiring:
PIN 1 Shield (ground) for positive biased electret lavaliere microphones. Shield (ground) for dynamic microphones and line level inputs.
PIN 2 Bias voltage source for positive biased electret lavaliere microphones that are not using servo bias circuitry and voltage source for 4 volt servo bias wiring.
PIN 3 Microphone level input and bias supply.
PIN 4 Bias voltage selector for Pin 3. Pin 3 voltage depends on Pin 4 connection.
Pin 4 tied to Pin 1: 0 V Pin 4 Open: 2 V Pin 4 to Pin 2: 4 V
PIN 5 Line level input for tape decks, mixer outputs, musical instruments, etc.

Backshell with strain relief

Insulator Insert TA5F Latchlock

Cable clamp

Remove strain relief if using dust boot

Backshell without strain
relief

Dust boot (35510)

Note: If you use the dust boot, remove the rubber strain relief that is attached to the TA5F cap, or the boot will not fit over the assembly.

Installing the Connector:

1. If necessary, remove the old connector from the microphone cable.

2. Slide the dust boot onto microphone cable with the large end facing the connector.

3. If necessary, slide the 1/8-inch black shrink tubing onto the mircrophone cable. This tubing is needed for some smaller diameter cables to ensure there is a snug fit in the dust boot.

4. Slide the backshell over the cable as shown above. Slide the insulator over the cable before soldering the wires to the pins on the insert.

5. Solder the wires and resistors to the pins on the insert according to the diagrams shown in Wiring Hookups for Different Sources. A length of .065 OD clear tubing is included if you need to insulate the resistor leads or shield wire.

6. If necessary, remove the rubber strain relief from the TA5F backshell by simply pulling it out.

7. Seat the insulator on the insert. Slide the cable clamp over the and of the insulator and crimp as shown on the next page.

8. Insert the assembled insert/insulator/clamp into the latchlock. Make sure the tab and slot align to allow the insert to fully seat in the latchlock. Thread the backshell onto the latchlock.

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LT, LT/E01, LT/E06, LT/X
Microphone Cable Termination for Non-Lectrosonics Microphones
TA5F Connector Assembly

Mic Cord Stripping Instructions

1

4

5

23

VIEW FROM SOLDER SIDE OF PINS

0.15″ 0.3″

Crimping to Shield and Insulation

Shield

Crimp these fingers to contact the shield

Strip and position the cable so that the clamp can be crimped to contact both the mic cable shield and the insulation. The shield contact reduces noise with some microphones and the insulation clamp increases ruggedness.

Insulation

Crimp these fingers to clamp the insulation

NOTE: This termination is intended for UHF transmitters only. VHF transmitters with 5-pin jacks require a different termination. Lectrosonics lavaliere microphones are terminated for compatibility with VHF and UHF transmitters, which is different from what is shown here.

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LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

Input Jack Wiring for Different Sources

In addition to the microphone and line level wiring hookups illustrated below, Lectrosonics makes a number of cables and adapters for other situations such as connecting musical instruments (guitars, bass guitars, etc.) to the transmitter. Visit www.lectrosonics.com and click on Accessories, or download the master catalog.

A lot of information regarding microphone wiring is also available in the FAQ section of the web site at:
http://www.lectrosonics.com/faqdb
Follow the instructions to search by model number or other search options.

Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters:

Fig. 1

2 VOLT POSITIVE BIAS 2-WIRE ELECTRET

SHELL

SHIELD AUDIO

PIN 1
1.5 k 2

Compatible wiring for microphones such as Countryman E6 headworn and B6 lavaliere.

3.3 k

3 4

Also see Fig. 9

5

45 1

3

2

TA5F PLUG

Fig. 2
4 VOLT POSITIVE BIAS 2-WIRE ELECTRET

SHELL

Most common type of wiring for lavaliere mics.
WIRING FOR LECTROSONICS M152/5P

The M152 lavaliere microphone has an internal resistor and can be wired in a 2-wire configuration. This is the factory standard wiring.

RED WHITE (N/C)

SHELL

Fig. 7
BALANCED AND FLOATING LINE LEVEL SIGNAL S SHELL

XLR JACK

*NOTE: If the output is balancedbut center tapped to ground, such as on all Lectrosonics receivers, do not connect Pin 3 of the XLR jack to Pin 4 of the TA5F connector.

TA5F PLUG

Fig. 8

UNBALANCED LINE LEVEL SIGNAL S

SLEEVE

SHIELD

AUDIO
TIP LINE LEVEL RCA or 1/4″ PLUG
For signal levels up to 3V (+12 dBu) before limiting. Fully compatible with 5-pin inputs on other Lectrosonics transmitters such as the LM and UM Series. A 20k ohm resistor can be inserted in series with Pin 5 for an additional 20 dB of attenuation to handle up to 30V (+32 dBu).

SHELL PIN
1 2
3 4 5

45 1

3

2

TA5F PLUG

Fig. 3 – DPA Microphones
DANISH PRO AUDIO MINIATURE MODELS

SHELL

This wiring is for DPA lavalier and headset microphones.
NOTE: The resistor value can range from 3k to 4 k ohms. Same as DPA adapter DAD3056

Fig. 4

2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET 2.7 k PIN

1 SHIELD
2 AUDIO

3

Compatible wiring for microphones

such as negative bias TRAM models.

4

5 NOTE: The resistor value can range from 2k to 4k ohms.

45 1

3

2

TA5F PLUG

Fig. 5 – Sanken COS-11 and others

4 VOLT POSITIVE BIAS 3-WIRE ELECTRET WITH EXTERNAL RESISTOR
SHIELD

SHELL

Also used for other 3-wire lavaliere microphones that require an external resistor.

DRAIN (BIAS) SOURCE (A UDIO)

Fig. 6
LO-Z MICROPHONE LEVEL SIGNALS

SHELL

Simple Wiring – Can ONLY be used with Servo Bias Inputs:

Servo Bias was introduced in 2005 and all transmitters with 5-pin inputs have been built with this feature since 2007.

Fig. 9
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET

SHELL

Simplified wiring for microphones such as Countryman B6 Lavalier and E6 Earset models and others.
NOTE: This servo bias wiring is not compatible with earlier versions of Lectrosonics transmitters. Check with the factory to confirm which models can use this wiring.
Fig. 10
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET

Simplified wiring for microphones such as negative bias TRAM. NOTE: This servo bias wiring is not compatible with earlier versions of Lectrosonics transmitters. Check with the factory to confirm which models can use this wiring.
Fig. 11
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET

SHELL

XLR JACK For low impedance dynamic mics or electret
mics with internal battery or power supply. Insert 1k resistor in series with pin 3 if attenuation is needed

NOTE : This servo bias wiring is not compatible with earlier versions of Lectrosonics transmitters. Check with the factory to confirm which models can use this wiring.

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LT, LT/E01, LT/E06, LT/X

Microphone RF Bypassing
When used on a wireless transmitter, the microphone element is in the proximity of the RF coming from the transmitter. The nature of electret microphones makes them sensitive to RF, which can cause problems with microphone/transmitter compatibility. If the electret microphone is not designed properly for use with wireless transmitters, it may be necessary to install a chip capacitor in the mic capsule or connector to block the RF from entering the electret capsule.
Some mics require RF protection to keep the radio signal from affecting the capsule, even though the transmitter input circuitry is already RF bypassed.
If the mic is wired as directed, and you are having difficulty with squealing, high noise, or poor frequency response, RF is likely to be the cause.
The best RF protection is accomplished by installing RF bypass capacitors at the mic capsule. If this is not possible, or if you are still having problems, capacitors can be installed on the mic pins inside the TA5F connector housing. Refer to the diagram below for the correct locations of capacitors.
Use 330 pF capacitors. Capacitors are available from Lectrosonics. Please specify the part number for the desired lead style.
Leaded capacitors: P/N 15117 Leadless capacitors: P/N SCC330P
All Lectrosonics lavaliere mics are already bypassed and do not need any additional capacitors installed for proper operation.

Line Level Signals
The wiring for line level and instrument signals is:
· Signal Hot to pin 5
· Signal Gnd to pin 1
· Pin 4 jumped to pin 1
This allows signal levels up to 3V RMS to be applied without limiting.
NOTE for line level inputs only (not instrument): If more headroom is needed, insert a 20 k resistor in series with pin 5. Put this resistor inside the TA5F connector to minimize noise pickup. The resistor will have little or no effect on the signal if the input is set for instrument.

Line Level Normal Wiring
Line Level More Headroom
(20 dB)

See Fig. 8 on previous page

2-WIRE MIC

Capacitors next to mic capsule

3-WIRE MIC
SHIELD

CAPSULE

SHIELD
AUDIO TA5F
CONNECTOR

AUDIO

CAPSULE

BIAS

Capacitors in TA5F connector

TA5F CONNECTOR

20

LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

Firmware Update
Updating the firmware is a simple matter of downloading a utility program and file from the website and running the program on a Windows operating system with the transmitter connected to a computer via the USB port.
Go to www.lectrosonics.com/US. In the top menu, hover the mouse over Support, and click on Wireless Support. On the right-hand-side Wireless Support Menu, choose Wireless Downloads. Choose your product (LT), then choose Firmware.
Step 1:
Begin by downloading the USB Firmware Updater Program.

Step 2:
Next, test the Updater by opening the icon: If the driver opens automatically, proceed to Step 3.
WARNING: If you receive the following error, the FTD I USB Device Driver is not installed on your system. Follow the TROUBLESHOOTING steps to fix the error.

TROUBLESHOOTING:

If you receive the FTDI D2XX error shown above, download and install the driver by clicking on this link.

here to download.

Then click

NOTE: This website, http://www.ftdichip.com/ Drivers/D2XX.htm, is not associated with Lectrosonics.com. It is a third party site used only for D2XX drivers currently available for Lectrosonics’ devices’ upgrades.

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LT, LT/E01, LT/E06, LT/X
Step 3:
Refer to Step 1 to return to Firmware web page. Download Firmware Update and save to a local file on your PC for easy locating when updating.

Step 7:
In Lectrosonics USB Firmware Updater, choose the detected device, browse to local Firmware File and click Start.
NOTE: It may take up to a minute or so for the Updater to recognize the transmitter.

WARNING: Do not disrupt the microUSB cable during updating.

Step 4:
Open Lectrosonics USB Firmware Updater.

Step 5: U P DAT E

Put the transmitter in UPDATE mode by simultaneously holding down the UP and DOWN arrow buttons on the transmitter control panel while powering it up.

The Updater alerts with progress and completion.

Step 8:
LT V6.0 Blk. A1
NuH

Once the Updater has completed, turn off the transmitter, then turn it back on to verify that the firmware version on the transmitter LCD matches the firmware version shown on the web site. The firmware is the second LCD display during boot up sequence.

Step 9:
Close Updater and disconnect microUSB cable.

Step 6:
Using a microUSB cable, connect the transmitter to your PC.

22

LECTROSONICS, INC.

Troubleshooting

Digital Hybrid Wireless Belt-Pack Transmitter It is important that you follow these steps in the sequence listed.

Symptom:
Transmitter Battery LED off when Power Switch “ON”

Possible Cause:
1. Batteries are inserted incorrectly. 2. Batteries are low or dead.

No Transmitter Modulation LEDs when Signal Should be Present
Receiver Indicates RF But No Audio

1. Gain control turned all the way down. 2. Batteries are inserted incorrectly. Check power LED. 3. Mic capsule is damaged or malfunctioning. 4. Mic cable damaged or miswired. 5. Instrument Cable damaged or not plugged in. 6. Musical instrument output level set too low.
1. Audio source or cable connected to transmitter is defective. Try using an alternate source or cable.
2. Make sure the compatibility mode is the same on transmitter and receiver.
3. Ensure musical instrument volume control is not set to minimum. 4. Check for correct pilot tone indication on the receiver. See item on
page 11 entitled About Overlapping Frequency Bands.

Receiver RF Indicator Off

1. Ensure that the transmitter and receiver are set to the same frequency, and that the hex code matches.
2. Transmitter not turned on, or battery is dead. 3. Receiver antenna missing or improperly positioned. 4. Operating distance is too great. 5. Transmitter may be set to the Standby Mode. See page 8.

No Sound (Or Low Sound Level), Receiver Indicates Proper Audio Modulation

1. Receiver output level set too low. 2. Receiver output is disconnected; cable is defective or miswired. 3. Sound system or recorder input is turned down.

Distorted Sound

1. Transmitter gain (audio level) is too high. Check Modulation LEDs on transmitter and receiver while distortion is being heard.
2. Receiver output level may be mismatched with the sound system or recorder input. Adjust output level on receiver to the correct level for the recorder, mixer or sound system.
3. Transmitter and receiver may not be set to the same compatibility mode. Some mis-matched combinations will pass audio.
4. RF interference. Reset both transmitter and receiver to a clear channel. Use scanning function on receiver if available.

Wind Noise or Breath “Pops'”

1. Reposition microphone, or use a larger windscreen, or both.
2. Omni-directional mics produce less wind noise and breath pops than directional types.

Hiss and Noise — Audible Dropouts

1. Transmitter gain (audio level) far too low. 2. Receiver antenna missing or obstructed. 3. Operating distance too great. 4. RF interference. Reset both transmitter and receiver to a
clear channel. Use scanning function on receiver if available. 5. Musical instrument output set too low. 6. Microphone capsule picking up RF noise. See item on page 20
entitled Microphone RF Bypassing.

Excessive Feedback (With Microphone)

1. Transmitter gain (audio level) too high. Check gain adjustment and/or reduce receiver output level.
2. Microphone too close to speaker system.
3. Microphone is too far from user’s mouth.

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LT, LT/E01, LT/E06, LT/X

Specifications

Operating Frequencies:

LT :

Band A1:

Band B1:

470.100 – 537.575 537.600 – 607.950

LT/E01:

Band A1: Band B1:

470.100 – 537.575 537.600 – 614.375

LT/E06:

Band B1: Band C1:

537.600 – 614.375 614.400 – 691.175

LT/X:

Band A1: Band B1:
Band C1:

470.100 – 537.575 537.600 – 607.900 614.100 – 614.375 614.400 – 691.175

NOTE: It’s the user’s responsibility to select the approved frequencies for the region where the transmitter is operating

Frequency Selection Steps:
RF Power output:
Compatibility Modes:
Pilot tone: Hybrid) Frequency Stability: Spurious radiation: v1.4.2 Equivalent input noise: Input level:
Mic: Instrument: Input impedance: Input limiter: Gain control range: Modulation indicators: modulation of
Controls:
LCD
Audio Input Jack: Antenna:

LT: Selectable; 100 kHz or 25 kHz LT/E01: Selectable; 100 kHz or 25 kHz LT/E06: Selectable; 100 kHz or 25 kHz LT/X: Selectable; 100 kHz or 25 kHz
LT: Selectable: 50 or 100mW LT/E01: 50mW LT/E06: < 100 mW EIRP LT/X: 50 or 100 mW LT: Nu Hybrid, IFB, Mode 3 LT/E01: Hybrid, IFB E06: Hybrid, IFB X: Hybrid, Mode 3, 200 Mode, 100 Mode,
Mode 7, Mode 6 and IFB mode. 25 to 32 kHz; 3 kHz deviation (Digital
25 to 32 kHz; 3.5 kHz deviation (Nu Hybrid) ± 0.002% US: Compliant with ETSI EN 300 422-1
E01/E06/X: 60 dB below carrier ­120 dBV (A-weighted)
· Nominal 2 mV to 300 mV, before limiting Greater than 1V maximum, with limiting
· 1M Ohm high level Line: 2k Ohm; Mic: 300 Ohm DSP controlled, dual envelope “soft” limiter with greater than 30 dB range 44 dB; digital control
· Dual bicolor LEDs indicate
-20, -10, 0 and +10 dB referenced to full modulation · LCD bar graph
· Top panel slide switch; programmable as power, mute, talkback or no (off) function
· Side panel membrane switches with
interface for power on/off and all setup and configuration controls Switchcraft 5-pin locking (TA5F) Galvanized steel, flexible wire

Battery: Battery Life:
Weight:
Dimensions: Emission Designator:

Two AA; alkaline, lithium, NiMH rechargeable
· Duracell Ultra: 4.75 hours · Eneloop 2400 mAH NiMH: 5.5 hours
5.9 ounces (169 grams), with lithium AA batteries
2.85 x 2.45 x .75 in. (72 x 62 x 19 mm)
110KF3E (US) 180KF3E (E01/E06/X)

Audio Performance (Overall System – Digital Hybrid mode)

Frequency Response:

Line/Instrument: 35 Hz to 20 kHz (+/-1dB)

Mic input:

35 Hz to 20 kHz (+/-1dB)

Mic input LF roll-off: Selectable knee at 35, 50, 70, 100, 120, 150 Hz

+6 +3
0dB
-3 Line in
-6
-9
-12

Mic in 35 Hz Roll-off
Mic in 150 Hz Roll-off

30

100

1kHz

10k 20k

The roll-off slope steepens at lower

THD:

0.2% (typical)

SNR at receiver output:

SmartNR No Limiting w/ Limiting

Note: The dual envelope OFF

103.5

108.0

“soft” limiter provides exceptionally good

NORMAL 107.0

111.5

handling of transients using variable attack and

FULL

108.5

113.0

release time constants.

Once activated, the limiter compresses 30+ dB of transmitter input range into

4.5 dB of receiver output range, thus reducing the measured figure for SNR

with no limiting by 4.5 dB

Specifications subject to change without notice.

24

LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

Service and Repair
If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnecting cables and then go through the Troubleshooting section in this manual.
We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop attempt anything other than the simplest repair. If the repair is more complicated than a broken wire or loose connection, send the unit to the factory for repair and service. Don’t attempt to adjust any controls inside the units. Once set at the factory, the various controls and trimmers do not drift with age or vibration and never require readjustment. There are no adjustments inside that will make a malfunctioning unit start working.
LECTROSONICS’ Service Department is equipped and staffed to quickly repair your equipment. In warranty repairs are made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a modest flat rate plus parts and shipping. Since it takes almost as much time and effort to determine what is wrong as it does to make the repair, there is a charge for an exact quotation. We will be happy to quote approximate charges by phone for out-of-warranty repairs.
Returning Units for Repair
For timely service, please follow the steps below:
A. DO NOT return equipment to the factory for repair without first contacting us by email or by phone. We need to know the nature of the problem, the model number and the serial number of the equipment. We also need a phone number where you can be reached 8 A.M. to 4 P.M. (U.S. Mountain Standard Time).
B. After receiving your request, we will issue you a return authorization number (R.A.). This number will help speed your repair through our receiving and repair departments. The return authorization number must be clearly shown on the outside of the shipping container.
C. Pack the equipment carefully and ship to us, shipping costs prepaid. If necessary, we can provide you with the proper packing materials. UPS is usually the best way to ship the units. Heavy units should be “double-boxed” for safe transport.
D. We also strongly recommend that you insure the equipment, since we cannot be responsible for loss of or damage to equipment that you ship. Of course, we insure the equipment when we ship it back to you.

Lectrosonics USA:
Mailing address: Lectrosonics, Inc. PO Box 15900 Rio Rancho, NM 87174 USA

Shipping address: Lectrosonics, Inc. 561 Laser Rd. NE, Suite 102 Rio Rancho, NM 87124 USA

Telephone: 505-892-4501 800-821-1121 Toll-free 505-892-6243 Fax

Web: www.lectrosonics.com
Lectrosonics Canada:
Mailing Address: 720 Spadina Avenue, Suite 600 Toronto, Ontario M5S 2T9

E-mail: sales@lectrosonics.com service.repair@lectrosonics.com

Telephone: 416-596-2202 877-753-2876 Toll-free (877-7LECTRO) 416-596-6648 Fax

E-mail: Sales: colinb@lectrosonics.com Service: joeb@lectrosonics.com

Self-Help Options for Non-Urgent Concerns
Our Facebook groups and weblists are a wealth of knowledge for user questions and information. Refer to:

Lectrosonics General Facebook Group: https://www.facebook.com/groups/69511015699

D Squared, Venue 2 and Wireless Designer Group: https://www.facebook.com/groups/104052953321109

The Wire Lists: https://lectrosonics.com/the-wire-lists.html

Rio Rancho, NM

25

LT, LT/E01, LT/E06, LT/X

26

LECTROSONICS, INC.

Digital Hybrid Wireless Belt-Pack Transmitter

Rio Rancho, NM

27

LIMITED ONE YEAR WARRANTY
The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warranty does not apply to used or demonstrator equipment.
Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item. Lectrosonics, Inc. will pay for the cost of returning your equipment to you.
This warranty applies only to items returned to Lectrosonics, Inc. or an authorized dealer, shipping costs prepaid, within one year from the date of purchase.
This Limited Warranty is governed by the laws of the State of New Mexico. It states the entire liablility of Lectrosonics Inc. and the entire remedy of the purchaser for any breach of warranty as outlined above. NEITHER LECTROSONICS, INC. NOR ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT SHALL BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL, OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS EQUIPMENT EVEN IF LECTROSONICS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OF LECTROSONICS, INC. EXCEED THE PURCHASE PRICE OF ANY DEFECTIVE EQUIPMENT.
This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state.

581 Laser Road NE · Rio Rancho, NM 87124 USA · www.lectrosonics.com 505-892-4501 · 800-821-1121 · fax 505-892-6243 · sales@lectrosonics.com

15 November 2023

References

• Lectrosonics: Quality wireless microphone, encrypted digital wireless and DSP audio processing systems
• Home - FTDI
• Lectrosonics: Quality wireless microphone, encrypted digital wireless and DSP audio processing systems
• New Endian
• The Wire-Lists

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