DBu-LEMO
Digital Belt Pack Transmitter
DBu-LEMO
DBu-LEMO/E01
INSTRUCTION MANUAL
Fill in for your records:
Serial Number:
Purchase Date:
LEMO® is a registered trademark of Interlemo Holding S.A.
Corporation Switzerland
Rio Rancho, NM, USA
www.lectrosonics.com
DBu-LEMO, DBu-LEMO/E01
Table of Contents
Introduction ........................................................................... 2
Frequency Agility................................................................. 2
Encryption ........................................................................... 2
DSP-controlled Input Limiter ............................................... 2
DBu-LEMO Block Diagram ................................................. 3
Battery Installation ............................................................... 4
Battery Status LED Indicator .............................................. 4
Belt Clips ............................................................................. 5
IR (infrared) Port ................................................................. 5
Audio Input .......................................................................... 5
Features and Functions ....................................................... 5
Operating Instructions ......................................................... 6
Powering On in Operating Mode ......................................... 6
Powering On in Standby Mode ........................................... 6
Powering Off ....................................................................... 6
Power Menu Options ............................................................ 6
Entering the Power Menu .................................................... 6
LCD Menu Map ...................................................................... 7
Main Menu and Setup Screen Details ................................. 8
Entering the Main Menu ...................................................... 8
Main Window Indicators ..................................................... 8
Connecting the Signal Source ............................................ 8
Adjusting the Input Gain ...................................................... 8
Selecting Frequency ........................................................... 9
Selecting Programmable Switch Functions......................... 9
Selecting the Low Frequency Roll-off ................................. 9
Selecting Audio Polarity (Phase) ......................................... 9
Selecting Battery Type ........................................................ 9
Setting Transmitter Output Power ....................................... 9
Remote Function ................................................................. 9
Locking/Unlocking Changes to Settings.............................. 10
Restoring Default Settings .................................................. 10
KeyType .............................................................................. 10
WipeKey .............................................................................. 10
SendKey .............................................................................. 10
LectroRM ............................................................................... 11
Whip Antennas .................................................................... 12
Encryption Key and Settings Transfer ............................... 12
Microphone Wiring ............................................................... 13
Line Input Wiring and Use ................................................... 13
Accessories .......................................................................... 13
Wireless Designer Software ............................................... 14
Firmware Update Instructions ............................................. 14
Specifications ....................................................................... 15
Troubleshooting .................................................................... 16
Service and Repair ............................................................... 17
Returning Units for Repair .................................................. 17
Introduction
The DBu-LEMO transmitter employs high efficiency
digital circuitry for extended operating time on two AA
batteries. The transmitter can tune in coarse or fine
steps across the UHF television band from 470.100 to
607.950 MHz (E01: 470.100 - 614.375 MHz), with a selectable output power of 25 or 50 mW. The pure digital
architecture enables AES 256-CTR encryption for high
level security applications.
Studio quality audio performance is assured by high
quality components in the preamp, wide range input
gain adjustment and DSP-controlled limiting. Input
connections and settings are included for any lavaliere
microphone, dynamic microphones and line level inputs.
Input gain is adjustable over a 44 dB range in 1 dB
steps to allow an exact match to the input signal level,
to maximize the dynamic range and signal to noise
ratio.
Frequency Agility
The transmitter tunes across the entire frequency
range, from 470.100 MHz to 607.950 MHz (E01:
470.100 - 614.375).
Encryption
When transmitting audio, there are situations where privacy is essential, such as during professional sporting
events, in court rooms or private meetings. For instances where your audio transmission needs to be kept
secure, without sacrificing audio quality, Lectrosonics
introduces Encryption Keys. Truly entropic encryption
keys are first created by a Lectrosonics receiver, such
as the DSQD Receiver. The key is then synced with the
DBu-LEMO via the IR port. The audio will be encrypted
and can only be listened to if both DBu-LEMO and receiver have the matching encryption key. If you are trying to transmit an audio signal and keys do not match,
all that will be heard is silence or white noise.
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.
2
LECTROSONICS, INC.
DBu-LEMO Block Diagram
DBu/LEMO Transmitter
Digital Belt-Pack Transmitter
Input
Jack
+5V
Shunt
Limiter
Servo Bias
Supply
Input
Preamp
Gain
Adj
DSP Clock
Oscillator
VCTXO
36.864 mHz
Bias Voltage
0, 2 or 4V
HI/Lo
Pass
Filter
Limiter Control
Key Received
Blue LED
PLL Ref
Converter
Audio
I2S
Phase Locked Loop
A-D
Microprocessor
Keypad
D-A Convert-
er
I2S
Voltage Controlled
Control
Firmware
Update
Security Key
Oscillator
I + Q
Baseband
Signals
(2) AA
Batteries
UART
Switching
Supply
Power
LED
Tr icolor
IR Port
Low
pass
filters
Power
USB
Jack
Low
Pass
Filter
IQ Modulator
Buffer
Final
Amplifier
Filters
Consumer Alert for US Users - FCC Order DA 10-92
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system
without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power
level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers
should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to
change. For more information, call the FCC at 1-888- CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone
website at www.fcc.gov/cgb/wirelessmicrophones. To operate wireless microphone systems at power greater than 50mW, you
must qualify as a Part 74 user and be licensed. If you qualify and wish to apply for a license go to: http://www.fcc.gov/Forms/
Form601/601.html
Rio Rancho, NM
3
DBu-LEMO, DBu-LEMO/E01
Battery Installation
The transmitter is powered by two AA batteries. We
recommend using two AA Duracell Ultra batteries.
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 the receiver.
Push outward on the battery compartment door and lift
it to open.
Slide door out to release catch
Lift door to open
Insert the batteries according to the markings on the
back of the housing.
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.
Contact springs
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
they are nearing the end of life. When the LED begins to
blink red, there will be only a few minutes remaining.
The Power/Function LED on the top panel will mirror
the keypad LED unless the programmable switch is set
to Mute, and the switch is turned on.
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.
A weak battery will sometimes cause the Power LED to
glow green immediately after the transmitter is turned
on, but it will soon discharge to the point where it 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, the most accurate way to determine
runtime status is by testing the time provided by a particular battery brand and type, then using the BatTime
function to determine remaining runtime.
NOTE: Refer to the Main Menu and Setup Section
for BatTime details.
4
LECTROSONICS, INC.
Features and Functions
Digital Belt-Pack Transmitter
Modulation
Indicators*
Antenna
Port
-20
IR Port
-10
AUDIO
IR PORT
status LED
Belt clip
mounting hole
Battery
compartment
door
Return to
previous screen
PWR/FUNC
Battery
Programmable
Function Switch
Input Jack
LEMO
Audio
DBu
470.100
-40
-20
u
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.
Key verification
LED
Belt clip
mounting hole
USB Port
+0
Menu navigation
buttons
Power button
*When the transmitter is set to MUTE, the -10 Modulation Indicators LED will glow solid red.
Remove hole cap to
attach spring loaded
belt clip
Belt Clips
The wire belt clip may be removed by pulling the ends
out of the holes in the sides of the case. Be sure to
have a firm grip to avoid scratching the surface of the
housing.
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) Port
The IR port is available on the top of the transmitter for
quick setup using a receiver with this function available.
IR Sync will transfer the settings for frequency from the
receiver to the transmitter.
Audio Input
The input jack is a rugged 3-pin LEMO connector with a
threaded locking sleeve.
Rio Rancho, NM
5
DBu-LEMO, DBu-LEMO/E01
Operating Instructions
Powering On in Operating Mode
Press and hold the Power Button for several seconds
until a moving bar on the LCD progresses.
Hold
DBu
for
Rf On
V1.13
/1.05
When you release the button, the unit will be operational with the RF output turned on and the Main Window
displayed.
Powering On in Standby Mode
A brief press of the Power Button , and releasing it
before the moving bar progresses, 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
Release Power
Button before
the moving bar
progresses to
enter standby
mode
DBu
470.100
-40
-20
RF indicator blinks
DBu
470.100
-40
-20
+0
Power Menu Options
Entering the Power Menu
With the unit turned on, press the power button once
briefly from any menu or screen and a menu will appear
with several options. Use the and arrow buttons
to highlight menu items. Then press MENU/SEL to
execute the item or enter a setup screen. The following
options are available:
• Resume - returns to the previous mode and screen
+0
• Pwr Off - turns the unit off irrevocably
• 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 5 seconds or 30 seconds, or to remain on
• About - displays model number and firmware
version
After settings and adjustments are made, press the
power button again to turn the unit off.
Powering Off
Powering
O . . .
If the power button is released, or the top panel switch
is turned back on again before the moving bar progresses, 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.
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
moving bar to progress, or with the
programmable switch (if it is configured for this function).
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LECTROSONICS, INC.
LCD Menu Map
Use arrow buttons
Digital Belt-Pack Transmitter
Gain
Freq.
ProgSw
Rolloff
Phase
BatType
SEL
Gain
BACK
BACK
Freq.
470.675
ProgSW
SEL
SEL
BACK
BACK
BACK
BACK
Rolloff
50 Hz
Phase
Normal
Invert
BatType
Alk.
Lith.
SEL
SEL
SEL
to select value
22
Level meter at bottom of screen
Press MENU/SEL to highlight MHz or kHz
Select value with arrow buttons
Select option with arrow buttons
Power
(None, TalkBk, Po wer, Mute)
Select value with arrow buttons
(35, 50, 70, 100, 120, 150 Hz)
Select option with arrow buttons
Select option with arrow buttons
NOTE: The settings will be stored
when the BACK button
is pressed.
TxPower
Remote
Locked?
Default
KeyType
WipeKey
SendKey
SEL
SEL
SEL
SEL
SEL
SEL
SEL
BACK
BACK
BACK
BACK
BACK
BACK
BACK
TxPower
25 mW
50 mW
Remote
Enable
Ignore
Locked?
Yes
No
Default
Settings
No
Yes
KeyType
Universal
WipeKey?
No
Yes
SendKey
Share
Select option with arrow buttons
Select option with arrow buttons
Select option with arrow buttons
Select option with arrow buttons
Select option with arrow buttons
(Universal, Shared, Standard or Volatile)
Select option with arrow buttons
(Only available when KeyType is set to
Standard, Shared or Volatile)
MENU
Press to send key
SEL
(Only available when KeyType is set to Shared)
Rio Rancho, NM
7
DBu-LEMO, DBu-LEMO/E01
Main Menu and Setup
Screen Details
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
Freq.
ProgSw
Rolloff
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.
Main Window Indicators
The Main Window displays programmable switch function, Standby or Operating mode, operating frequency,
audio level and battery status.
Programmable
Switch Function
Frequency (MHz)
DBu
MUTE
470.100
-40
-20
Gain
-40
Operating
Battery status
+0
-20
mode
25
0
Connecting the Signal Source
The input jack is a rugged 3-pin LEMO connector with a
threaded locking sleeve.
Adjusting the Input Gain
The two bicolor Modulation LEDs on the top 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
+0 dB to +10 dB
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
Freq.
ProgSw
Rolloff
Green Green
Red Green
Gain
25
-40
-20
0
Audio level
If the programmable switch function is set for Mute, the
Main Window will indicate that the function is enabled.
Mute function
enabled but
not active
DBu
MUTE
470.100
-40
-20
+0
When the switch is turned on, the mute icon appearance will change and the word MUTE will blink at the
bottom of the display. The -10 LED on the top panel will
also glow solid red.
DBu
MUTE
Main Window will blink
the word MUTE when
the audio is muted
470.100
<–MUTE–>
8
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 transmitter gain adjustment set according to these instructions, and do
not change it to adjust the audio output level of the
receiver.
LECTROSONICS, INC.
Digital Belt-Pack Transmitter
Selecting Frequency
The setup screen for frequency selection offers two
ways to browse the available frequencies.
Frequency groups are also able to be received via IR
(Inrared) port sync. The group options are set by the
receiver, and will show at the bottom of the screen as
No Grp, Grp x, Grp w, Grp v, or Grp u.
Use the MENU/SEL button to toggle between options
and UP and DOWN arrows to adjust.
Gain
Freq
Freq
Freq.
ProgSw
Rolloff
628.200
Grp x
628.200
Grp x
Selecting Programmable Switch Functions
The programmable switch on the top panel can be configured using the menu to provide several functions:
• (none) - disables the switch
• Mute - mutes the audio when switched on; LCD will
blink a message and -10 LED will glow solid red.
• Power - turns the power on and off
• TalkBk - switches the audio output on the receiver
to a different channel for communication with the
production crew. Requires a receiver with this function enabled.
Gain
Freq.
ProgSw
Rolloff
ProgSw
Power
Use the and
arrow buttons to
select the desired
function or disable
the switch
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.
Phase
Phase
BatType
TxPower
Remote
Normal
Invert
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.
Phase
BatType
BatType
TxPower
Remote
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.
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.
Alk.
Lith.
Setting Transmitter Output Power
The output power can be set to 25 mW or 50 mW.
NOTE: The programmable switch will continue
to operate whether or not keypad changes are
locked.
Selecting the Low Frequency Roll-off
The low frequency audio roll-off is adjustable to optimize performance for ambient noise conditions or
personal preference.
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 or 150 Hz.
Gain
Freq.
ProgSw
Rolloff
Rio Rancho, NM
Rolloff
70 Hz
Rolloff
TxPower
Phase
BatType
TxPower
25 mW
50 mW
Remote Function
Remote control “dweedle” tones from a smart phone
can be used to control the transmitter.
9
DBu-LEMO, DBu-LEMO/E01
Locking/Unlocking Changes to Settings
Changes to the settings can be locked to prevent inadvertent changes being made.
BatType
Locked?
TxPower
Remote
Locked?
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 (Mute and On/Off)
• Power can still be turned off by using the power
menu or removing the batteries.
Ye s
No
Gain
-40
25
-20
Restoring Default Settings
This is used to restore the factory settings.
• Shared: There are an unlimited number of
shared keys available. Once generated by a receiver and transferred to the DBu, the encryption key
is available to be shared (synced) by the DBu with
other transmitters/receivers via the IR port. When
a transmitter is set to this key type, a menu item
named SEND KEY is available to transfer the key to
another device.
• Universal: This is the most convenient encryp-
0
tion option available. All encryption-capable Lectrosonics transmitters and receivers contain the
Universal Key. The key does not have to be generated by a receiver. Simply set the DBu and a Lecrosonics receiver to Universal, and the encryption
is in place. This allows for convenient encryption
amongst multiple transmitters and receivers, but not
as secure as creating a unique key.
Remote
KeyType
Locked?
Default
Standard
KeyType
Remote
Locked?
Default
KeyType
Default
settings
No
Ye s
KeyType
The DBu receives an encryption via the IR port from a
key generating receiver. Begin by selecting a key type
in the receiver and generating a new key (key type is
labeled KEY POLICY in the DSQD receiver). Set
the matching KEY TYPE in the DBu and transfer the
key from the receiver (SYNC KEY) to the DBu via the
IR ports. A confirmation message will display on the
receiver display if the transfer is successful. The
transmitted audio will then be encrypted and can only
be listened to if the receiver has the matching encryption key.
The DBu has three options for encryption keys:
• Standard: This is the highest level of security.
The encryption keys are unique to the receiver and
there are only 256 keys available to be transferred
to a transmitter. The receiver tracks the number of
keys generated and the number of times each key
is transferred.
WipeKey
This menu item is only available if Key Type is set to
Standard or Shared. Select Yes to wipe the current key
and enable the DBu to receive a new key.
Default
WipeKey?
KeyType
WipeKey
SendKey
No
Ye s
SendKey
This menu item is only available if Key Type is set to
Shared. Press Menu/Sel to sync the Encryption key to
another transmitter or receiver via the IR port.
Default
KeyType
WipeKey
SendKey
SendKey
Share:
10
LECTROSONICS, INC.
Digital Belt-Pack Transmitter
LectroRM
By New Endian LLC
LectroRM is a mobile application for iOS and Android
operating systems to remotely control Lectrosonics
Transmitters.
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 about $20 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 (Gain)
• Frequency
• Sleep Mode
• Lock Mode
• Output Power
• Low Frequency Roll-off
• LED on/off
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.
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 a later firmware version
that enables remote control.
• Remote control must be enable on the transmitter.
Please be aware this app is not a Lectrosonics
product. It is privately owned and supported by
New Endian LLC, www.newendian.com.
iOS
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.
Rio Rancho, NM
11
DBu-LEMO, DBu-LEMO/E01
Whip Antennas
Because the transmitter tunes across such a broad frequency range, it is best to use the appropriate antenna
for maximum operation. Two antennas are included with
the transmitter, and are shipped from the factory pre-cut
and fully assembled. Each antenna covers three blocks.
Use the chart below to determine which antenna best
fits your needs.
Frequency Cap
Block Range MHz Color Antenna
470 470.100 - 495.600 Black AMM19
19 486.400 - 511.900 Black AMM19
20 512.000 - 537.500 Black AMM19
21 537.600 - 563.100 Red AMM22
22 563.200 - 588.700 Red AMM22
23 588.800 - 607.950 Red AMM22
Encryption Key and
Settings Transfer
A cable between the receiver and the micro USB port
on the side of the transmitter is used to transfer the
encryption key from the receiver to the transmitter. This
connection can also be used to send the transmitter
settings stored in the receiver to the transmitter.
The interface cable, P/N DRKEYCABLE, is used to
make this connection.
NOTE: Reference the DSW System Instruction
Manual for instructions on Encryption Key settings
and software.
12
LECTROSONICS, INC.
Digital Belt-Pack Transmitter
Microphone Wiring
Looking into the 3 pin LEMO mic connector from the
outside of the transmitter, the pin centered in the two
guide slots is pin 1 (ground). Pin 2 is a 1k resistor to
ground. Pin 3 is the audio/bias connection for two-wire
microphones and line inputs.
Pin 1
Pin 2
Voltages, polarity, impedance and line level for all signal
sources are selected by menus. Menu selections include presets for popular microphones, and a sub-menu
for manual setup. Refer to the section entitled Setup
Screens on the previous page for details.
Two-wire electret lavaliere:
Pin 1 - Ground (shield)
Pin 3 - Audio and Bias
Guide slots
Pin 3
Accessories
P/N 26895 Wire belt clip
BCSLEBN Spring-loaded belt clip
Sanken COS-11 lavaliere
Recommended Wiring:
Pin 1 - Shield (ground)
Pin 2 - White (source load)
Pin 3 - Black (bias and audio)
NOTE: The COS-11 can also be wired in a twowire configuration. Contact Plus24/Sanken for
details.
The Sanken CUB-01 is not supported.
Line Input Wiring and Use
Pin Configuration:
Pin 1: Shield (ground)
Pin 2: Audio
Transmitter Settings:
Unlike the old configuration,
the new line input configuration requires no fixed gain
Input Setting
setting. The gain setting can
be adjusted as needed for
the specific input level used.
DRKEYCABLE Encryption key and settings transfer
cable; micro USB to male 3.5 mm
TRS; 42 in. length
MCATA5MLEMO LEMO to TA5M mic adapter cable
Rio Rancho, NM
13
DBu-LEMO, DBu-LEMO/E01
Wireless Designer
Software
Download the Wireless Designer software installer from
the web sites under the SUPPORT tab at:
http://www.lectrosonics.com/US
http://www.lectrosonics.com/europe/
Wireless Designer only needs to be installed the first
time the software is used. Once the software is installed, updates are available by simply clicking on an
item in the Help Menu.
Note: If Wireless Designer is already installed, you
must uninstall it before attempting to install a new
copy.
Firmware Update
Instructions
Firmware updates are made with a file downloaded
from the web site and the DBu-LEMO connected via
USB.
The USB port on the transmitter requires a micro-B
male plug on the connecting cable. The other end of
the cable would normally be a USB A-Type male connectorto fit the most common type of USB jack used on
computers.
USB Port
Refer to Help in Wireless Designer software for the
procedure.
14
LECTROSONICS, INC.
Specifications
Operating Frequencies: DBu-LEMO: 470.100 - 607.950 MHz
DBu-LEMO/E01: 470.100 - 614.375 MHz
Frequency
Selection Steps: 25 kHz
RF Power output:
Frequency Stability: ± 0.002%
Digital Modulation: 8PSK
Equivalent input noise: –128 dBV
Input level: Nominal 2 mV to 300 mV, before limiting
Greater than 1V maximum, with limiting.
Input impedance: • Mic: 300 Ohm
• Line: 2k Ohm
Input limiter: Dual envelope type; 30 dB range
Gain control range: 44 dB in 1 dB steps; digital control
Modulation indicators: • Dual bicolor LEDs indicate modulation of
-20, -10, 0 and +10 dB referenced to full
modulation
• LCD bar graph
Controls: • Top panel toggle switch; programmable as
power, mute or none (off) function
• Side panel membrane switches with LCD
interface for power on/off and all setup and
configuration controls
Audio Input Jack: LEMO 00 Series 3-pin
Antenna: Galvanized steel, flexible wire
Battery: Two AA Duracell Ultra recommended
Battery Life: 4.5 hours; Duracell Ultra alkaline
Weight: 6.24 ounces (177 grams), including two AA
batteries and wire belt clip
Dimensions: 3.2 x 2.5 x .74 in. (86 x 62 x 19 mm)
Emission Designator: 170KG1E
Selectable; 25 or 50 mW
Digital Belt-Pack Transmitter
Specifications subject to change without notice.
For body worn operation, this transmitter model has been tested and meets the FCC RF exposure
guidelines when used with the Lectrosonics accessories supplied or designated for this product. Use of
other accessories may not ensure compliance with FCC RF exposure guidelines. Contact Lectrosonics
if you have any questions or need more information about RF exposure using this product..
This device complies with FCC radiation exposure limits as set forth for an uncontrolled environment.
This device should be installed and operated so that its antenna(s) are not co-located or operating in
conjunction with any other antenna or transmitter.
This device complies with ISED Canada radiation exposure limits as set forth for a controlled
“professional” use only.
Cet appareil est conforme avec les normes d’Industrie Canada concernant les limites d’exposition aux
radiations pour un usage professionnel contrôlé seulement.
Rio Rancho, NM
15
DBu-LEMO, DBu-LEMO/E01
Troubleshooting
It is important that you follow these steps in the sequence listed.
Symptom: Possible Cause:
Transmitter Battery LED off 1. Batteries are inserted incorrectly.
when Power Switch “ON” 2. Batteries are low or dead.
No Transmitter Modulation LEDs 1. Gain control turned all the way down.
when Signal Should be Present 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.
Receiver Indicates RF But No Audio 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.
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 1. Receiver output level set too low.
Indicates Proper Audio Modulation 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. 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 17
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.
16
LECTROSONICS, INC.
Digital 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 dam-
age to equipment that you ship. Of course, we insure the equipment when we ship it back to you.
Lectrosonics USA:
Mailing address: Shipping address: Telephone:
Lectrosonics, Inc. Lectrosonics, Inc. (505) 892-4501
PO Box 15900 561 Laser Rd. NE, Suite 102 (800) 821-1121 Toll-free
Rio Rancho, NM 87174 Rio Rancho, NM 87124 (505) 892-6243 Fax
USA USA
Web: E-mail:
www.lectrosonics.com sales@lectrosonics.com
service.repair@lectrosonics.com
Lectrosonics Canada:
Mailing Address: Telephone: E-mail:
720 Spadina Avenue, (416) 596-2202 Sales: colinb@lectrosonics.com
Suite 600 (877) 753-2876 Toll-free Service: joeb@lectrosonics.com
Toronto, Ontario M5S 2T9 (877-7LECTRO)
(416) 596-6648 Fax
Rio Rancho, NM
17
DBu-LEMO, DBu-LEMO/E01
18
LECTROSONICS, INC.
Digital Belt-Pack Transmitter
Rio Rancho, NM
19
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
+1(505) 892-4501 • fax +1(505) 892-6243 • (800) 821-1121 US and Canada • sales@lectrosonics.com
31 December 2019
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