INSTRUCTION MANUAL
SMWB Series
Wireless Microphone Transmitters and Recorders
Fill in for your records:
Serial Number:
SMWB
SMDWB
Featuring
Digital Hybrid Wireless
Technology
US Patent 7,225,135
®
Purchase Date:
Rio Rancho, NM, USA
www.lectrosonics.com
SMWB Series
2
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
Table of Contents
Introduction .............................................................................................................................................................................................4
About Digital Hybrid Wireless
Servo Bias Input and Wiring .................................................................................................................................................................4
DSP-controlled Input Limiter .................................................................................................................................................................4
Recorder function ..................................................................................................................................................................................4
Features ...................................................................................................................................................................................................5
Battery Status LED Indicator ................................................................................................................................................................5
Battery Installation .................................................................................................................................................................................5
Turning Power ON ..................................................................................................................................................................................6
Short Button Press ................................................................................................................................................................................6
Long Button Press ................................................................................................................................................................................6
Menu Shortcuts ..................................................................................................................................................................................... 6
Transmitter Operating Instructions ......................................................................................................................................................7
Recorder Operating Instructions ..........................................................................................................................................................7
SMWB Main Menu ...................................................................................................................................................................................8
SMWB Power Button Menu ....................................................................................................................................................................9
Setup Screen Details ...........................................................................................................................................................................10
Locking/Unlocking Changes to Settings..............................................................................................................................................10
Main Window Indicators ...................................................................................................................................................................... 10
Connecting the Signal Source ............................................................................................................................................................10
Turning Control Panel LEDs ON/OFF .................................................................................................................................................10
Helpful Features on Receivers ............................................................................................................................................................10
Files ....................................................................................................................................................................................................10
Record or Stop ...................................................................................................................................................................................11
Adjusting the Input Gain ......................................................................................................................................................................11
Selecting Frequency ...........................................................................................................................................................................11
Selecting Frequency Using Two Buttons ............................................................................................................................................. 12
About Overlapping Frequency Bands .................................................................................................................................................12
Selecting the Low Frequency Roll-off .................................................................................................................................................12
Selecting the Compatibility (Compat) Mode ........................................................................................................................................12
Selecting Step Size .............................................................................................................................................................................13
Selecting Audio Polarity (Phase) ......................................................................................................................................................... 13
Setting Transmitter Output Power .......................................................................................................................................................13
Recorded File Naming .......................................................................................................................................................................13
SD Info ................................................................................................................................................................................................13
Restoring Default Settings ..................................................................................................................................................................13
5-Pin Input Jack Wiring ........................................................................................................................................................................14
Microphone Cable Terminationfor Non-Lectrosonics Microphones ................................................................................................15
Input Jack Wiring for Different Sources .............................................................................................................................................16
Microphone RF Bypassing ..................................................................................................................................................................17
Line Level Signals ...............................................................................................................................................................................17
Firmware Update ..................................................................................................................................................................................18
Silver Paste on SM Series Transmitter Thumbscrews .......................................................................................................................20
Straight Whip Antennas .......................................................................................................................................................................21
Belt Clips and Pouches ........................................................................................................................................................................22
SMWB Single Battery Model ..............................................................................................................................................................22
SMDWB Dual Battery Model ...............................................................................................................................................................22
Miscellaneous Accessories .................................................................................................................................................................23
LectroRM ...............................................................................................................................................................................................24
Troubleshooting ....................................................................................................................................................................................25
Specifications .......................................................................................................................................................................................26
Service and Repair ...............................................................................................................................................................................27
Returning Units for Repair ..................................................................................................................................................................27
® .................................................................................................................................................................................................................................................................................4
Rio Rancho, NM
3
SMWB Series
Introduction
The design of the SMWB 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. Along with providing peerless audio
quality with wide frequency response and dynamic
range in Nu Hybrid mode, the technology used in the
SMWB transmitter includes compatibility modes for
Lectrosonics Mode 3 and IFB receivers.
The housing is a rugged, machined aluminum package with a standard Lectrosonics 5-pin input jack for
use with electret lavaliere mics, dynamic mics, musical
instrument pickups and line level signals. The LEDs
on the keypad allow quick and accurate level settings
without having to view the receiver. The unit is powered
by AA batteries, one battery in the SMWB and two in
the SMDWB. The antenna port uses a standard 50 ohm
SMA connector.
Switching power supplies 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
providing a clean 30 dB range to prevent overload from
signal peaks.
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
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.
system simply
Servo Bias Input and Wiring
The input preamp is a unique design that delivers
audible improvements over conventional transmitter
inputs. 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.
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.
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.
Recorder function
The SMWB has a built in recording function for use in
situations where RF may not be possible or to work as
a stand alone recorder. The record function and transmit functions are exclusive of each other - you cannot
record AND transmit at the same time. When the unit is
transmitting and recording is turned on, the audio in the
RF transmission will stop, but the battery status will still
be sent to the receiver.
The recorder samples at 44.1kHz rate with a 24 bit
sample depth. (the rate was selected due to the required 44.1kHz rate used for the digital hybrid algorithm). The micro SDHC card also offers easy firmware
update capabilities without the need for a USB cable or
driver issues.
4
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
Features
Indicates micro
SDHC card present
and recording
status (stopped/not
recording)
Antenna
Port
Modulation
Indicators
microSDHC
memory card
Audio
Input
Jack
port
REC
Battery
-40
-20
0
Status LED
Antenna
Port
microSDHC
memory card
port
Audio
Input
Jack
Battery Status LED Indicator
AA batteries can be used to power the transmitter.
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.
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.
Some 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. Refer to the receiver instructions
for details on using the timer.
Battery Installation
The transmitter is powered by AA batteries. (The SMWB
requires one AA battery and the SMDWB requires two.)
We recommend using lithium for longest life.
Because some 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.
The battery door opens by simply unscrewing the
knurled knob part way until the door will rotate. The
door is also easily removed by unscrewing the knob
completely, which is helpful when cleaning the battery
contacts. 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.
A small pinpoint dab of silver conductive grease* on the
thumbscrew threads can improve battery performance
and operation. See page 20. Do this if you experience a
drop in battery life or an increase in operating temperature.
If you are unable to locate a supplier of this type of
grease - a local electronics shop for example - contact
the factory for a small maintenance vial.
Insert the batteries according to the markings on the
back of the housing. If the batteries are inserted incorrectly, the door may close but the unit will not operate.
Rio Rancho, NM
5
SMWB Series
Turning Power ON
Short Button Press
When the unit is turned off, a short press of the power
button will turn the unit on in the Standby Mode with
the RF output turned off.
RF indicator blinks
b 19
A
E
494.500
-40
-20
0
To enable RF output from the Standby Mode, press the
Power button, select Rf On? option, then select yes.
Resume
Pwr Off
Rf On?
AutoOn?
Long Button Press
When the unit is turned off, a long press of the power
button will start a countdown to turn the unit on with the
RF output turned on. Continue to hold the button until
the countdown is complete.
Hold
for
Rf On
...3
If the button is released before the countdown is completed, the unit will power up with the RF output turned
off.
Rf On?
No
Ye s
Hold power
button until
the counter
reaches 3
RF indicator not blinking
b 19
A
E
503.800
-40
-20
0
Power Button Menu
When the unit is already turned on, the Power Button is
used to turn the unit off, or to access a setup menu.
A long press of the button turns the power off.
A short press of the button opens a menu for the following setup options. Select the option with the UP and
DOWN arrow buttons then press MENU/SEL.
• Resume returns the unit to the previous screen and
operating mode
• Pwr Off turns the unit off
• Rf On? turns the RF output on or off
• AutoOn? selects whether or not the unit will turn on
automatically after a battery change
• Remote enables or disables the audio remote control (dweedle tones)
• Bat Type selects the type of battery in use
• Backlit sets the duration of the LCD backlight
• Clock sets the Year/Month/Day/Time
• Locked disables the control panel buttons
• LED Off enables/disables control panel LEDs
• About displays the model number and firmware
version
Menu Shortcuts
From the Main/Home Screen, the following shortcuts
are available:
• Record: Press the MENU/SEL + UP arrow simultaneously
• Stop Recording: Press the MENU/SEL + DOWN
arrow simultaneously
NOTE: The shortcuts are only available from the
main/home screen AND when a microSDHC
memory card is installed.
6
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
Transmitter Operating
Instructions
• Install battery(s)
• Turn power on in the Standby mode (see previous
section)
• Connect microphone and place it in the position
where it will be used.
• Have the user talk or sing at the same level that will
be used in the production, and adjust the input gain
so that the -20 LED blinks red on louder peaks.
Gain
Gain
Freq
Rolloff
Compat
Signal Level -20 LED -10 LED
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
• Set the frequency and compatibility mode to match
the receiver.
• Turn the RF output on with the Rf On? item in the
power menu, or by turning the power off and then
back on while holding the power button in and waiting for the counter to reach 3.
-40
-20
Use the UP and DOWN
arrow buttons to adjust
25
the gain until the -20
LED blinks red on
louder peaks
0
Off Off
Green Off
Green Green
Red Green
Red Red
Recorder Operating
Instructions
• Install battery(s)
• Insert microSDHC memory card
• Turn power on
• Format memory card
• Connect microphone and place it in the position
where it will be used.
• Have user talk or sing at the same level that will be
used in the production, and adjust the input gain so
that the -20 LED blinks red on louder peaks
Gain
Gain
Freq.
Rolloff
Compat
Signal Level -20 LED -10 LED
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
• Press MENU/SEL and choose Record from the
menu
-40
-20
Files
For mat
RECORD-
Record
Gain
Use the UP and DOWN
arrow buttons to adjust
25
the gain until the -20
LED blinks red on
louder peaks
0
Off Off
Green Off
Green Green
Red Green
Red Red
b 19
REC
A
E
ING
503.800
-40
-20
0
Rio Rancho, NM
• To stop recording, press MENU/SEL and choose
Stop; the word SAVED appears on the screen
Files
For mat
SAVED
Stop
Gain
To play back the recordings, remove the memory card
and copy the files onto a computer with video or audio
editing software installed.
b 19
A
E
503.800
-40
-20
0
7
SMWB Series
Freq.
Rolloff
Compat
StepSiz
Phase
TxPower
SEL
BACK
Freq
Press SEL to
select desired
adjustment
Use arrow keys
to select desired
frequency
SEL
BACK
SEL
BACK
Compat
Select from
listing
Use arrow keys to select
compatibility mode
SEL
BACK
Use arrow keys to select
frequency step size
100 kHz
25 kHz
StepSiz
SEL
BACK
Use arrow keys to select
audio output polarity
Pos.
Neg.
Phase
SEL
BACK
Use arrow keys to select
RF power output
25mW
50 mW
100 mW
TxPower
Rolloff
70 Hz
Use arrow keys to
select input gain
Select from
listing
b 21
80
550.400
Nu Hybrid
From the Main Window press MENU/SEL.
Use the UP/Down arrow keys to select the item.
Files
SEL
BACK
Files
0014A000
0013A000
Use arrow keys to
select file in list
Select from
listing
Format
SEL
BACK
Use arrow keys to initiate
formatting the memory card
No
Yes
Format?
(erases)
Gain
SEL
BACK
Gain
22
Use arrow keys to
select input gain
Select from
listing
Record
SEL
BACK
RECORD-
ING
OR
Stop
SEL
BACK
SAVED
Default
SEL
BACK
Use arrow keys to return recorder
to default factory settings
No
Yes
Default
settings
Naming
SEL
BACK
Use arrow keys to select
file naming method
Seq #
Clock
Naming
SD Info
SEL
BACK
[SMWB ]
Max Rec
E.........................F
0/ 14G
Battery remaining
Storage used
Storage capacity
Available recording time (H : M : S)
SMWB Main Menu
8
LECTROSONICS, INC.
SMWB Power Button Menu
Rf On?
BatType
Remote
Press SEL to return to
the previous screen
SEL
BACK
Use arrow keys to
turn RF signal on/off
No
Yes
Rf On?
SEL
BACK
Use arrow keys to
choose battery type
Alk.
Lith.
BatType
SEL
BACK
Use arrow keys to
enable/disable remote
Enable
Ignore
Remote
From the Main Window press the power button.
Use the UP/DOWN arrow keys to select the item.
Resume
Pwr Off
Press SEL to turn the
power off
AutoOn?
SEL
BACK
ProgSw
Use arrow keys to enable
auto power restore
No
Yes
1.5 V
Backlit
SEL
BACK
Backlit
Use arrow keys to select
LCD backlight duration
On
30 sec
5 sec
Off
About
Locked
SEL
BACK
About
SMWB
v1.00
Displays firmware version
SEL
BACK
Use arrow keys to
lock/unlock keypad
Yes
No
Locked?
LED Off
SEL
BACK
LEDs
Use arrow keys to turn
LEDs on or off
On
Off
Clock
SEL
BACK
Clock
2017
07 / 26
17 : 19
Year
Month / Day
Hour : Minute
Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM
9
SMWB Series
Setup Screen Details
Locking/Unlocking Changes to Settings
Changes to the settings can be locked in the Power
Button Menu.
Clock
Locked
LED Off
About
When changes are locked, several controls and actions
can still be used:
• Settings can still be unlocked
• Menus can still be browsed
• When locked, POWER CAN ONLY BE TURNED
OFF by removing the batteries.
Main Window Indicators
The Main Window displays the block number, Standby
or Operating mode, operating frequency, audio level,
battery status and programmable switch function. When
the frequency step size is set at 100 kHz, the LCD will
look like the following.
Block number
Frequency
(hex number)
Frequency (MHz)
When the frequency step size is set to 25 kHz, the hex
number will appear smaller and may include a fraction.
1/4 = .025 MHz
1/2 = .050 MHz
3/4 = .075 MHz
Locked?
b 470
2C
474.500
-40
Audio level
b 470
2C
474.525
-40
No
Ye s
Operating mode
-20
Fraction
1
4
-20
LOCKED
(menu to
unlock)
Battery status
0
Note that the
frequency has
increased by 25
kHz from the upper
example.
0
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.
b 19
Freq.
b 19
494.525
-40
-20
0
494.525
Connecting the Signal Source
Microphones, line level audio sources, and instruments
can be used with the transmitter. Refer to the section
entitled Input Jack Wiring for Different Sources for
details on the correct wiring for line level sources and
microphones to take full advantage of the Servo Bias
circuitry.
Turning Control Panel LEDs ON/OFF
From the main menu screen, a quick press of the UP
arrow button turns the control panel LEDs on. A quick
press of the DOWN arrow button turns them off. The
buttons will be disabled if the LOCKED option is selected in the Power Button menu.
The control panel LEDs can also be turned on and off
with the LED Off option in the Power Button menu.
Helpful Features on Receivers
To aid in finding clear frequencies, several Lectrosonics
receivers offer a SmartTune feature that scans the tun-
ing 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.
Files
10
Files
For mat
Record
Gain
Files
0007A000
0006A000
0005A000
0004A000
0003A000
0002A000
Select recorded
files on
microSDHC
memory card.
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
Format
Files
For mat
Record
Gain
Formats the microSDHC memory
card.
WARNING: This function erases
any content on the microSDHC
memory card.
Record or Stop
Begins recording or stops recording. (See page 7.)
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
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
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 Turn-
ing Power ON and OFF).
2) Navigate to the Gain setup screen.
Gain
Gain
Freq
Rolloff
Compat
3) Prepare the signal source. Position a microphone
the way it will be used in actual operation and have
the user speak or sing at the loudest level that 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.
-40
Off Off
Green Off
Green Green
Red Green
Red Red
25
-20
0
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 Frequency
The setup screen for frequency selection offers several
ways to browse the available frequencies.
Gain
Freq
Rolloff
Compat
Each field will step through the available frequencies in
a different increment. The increments are also different
in the 25 kHz mode from the 100 kHz mode.
Freq.
b 19
51
494.500
Freq.
b 19
51
494.500
Freq.
b 19
51
494.500
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
1
51
4
494.525
Freq.
b 19
51
Press MENU/
SEL to select
one of four
fields to make
adjustments
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.
These two fields
always step in the
same increments
1 block steps
1 MHz steps
Freq.
b 19
494.500
b 470
1
Fraction appears
next to hex code
in 25 kHz mode
51
4
474.525
-40
-20
51
0
Rio Rancho, NM
11
SMWB Series
Selecting Frequency Using Two Buttons
Hold the MENU/SEL button in, then use the and
arrow buttons for alternate increments.
NOTE: You must be in the FREQ menu to access
this feature. It is not available from the main/home
screen.
to next 100 kHz
1
4
1 block steps
1.6 MHz steps to
nearest 100 kHz
channel
100 kHz steps
channel
1 block steps
1.6 MHz steps
25 kHz steps
b 19
494.525
-40
-20
0
100 kHz Mode
Freq.
b 19
10 MHz steps
51
494.500
25 kHz Mode
Freq.
b 19
10 MHz steps
51
494.525
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
Step Size and
Frequency
mismatch
**
494.500
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.
Selecting the Low Frequency Roll-off
It is possible that the low frequency roll-off point could
affect the gain setting, so it’s generally good practice to
make this adjustment before adjusting the input gain.
The point at which the roll-off takes place can be set to:
• LF 35 35 Hz
• LF 50 50 Hz
• LF 70 70 Hz
• LF 100 100 Hz
• LF 120 120 Hz
• LF 150 150 Hz
The roll-off is often adjusted by ear while monitoring the
audio.
.
Rolloff
Rolloff
Compat
StepSiz
70 Hz
Phase
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
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
• Nu Hybrid: Nu Hybrid
• Mode 3:* Mode 3
• IFB Series: IFB Mode
Mode 3 works with certain non-Lectrosonics models.
Contact the factory for details.
Compat
IFB
12
Freq.
b 19
494.500
51
Freq.
b470
494.500
band number and
hex code match
the receiver setting
F4
Make sure the
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
Selecting Step Size
This menu item allows frequencies to be selected in
either 100 kHz or 25 kHz increments.
Rolloff
StepSiz
StepSiz
Compat
StepSiz
Phase
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.
100 kHz
25 kHz
100 kHz
25 kHz
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.
SD Info
Information regarding the microSDHC memory card
including space remaining on card.
Fuel gauge
Storage used
Storage capacity
Available recording
time (H : M : S)
TxPower
Naming
SD Info
Default
[SMWB ]
E.........................F
0/ 14G
Max Rec
Restoring Default Settings
This is used to restore the factory settings.
TxPower
Naming
SD Info
Default
Default
settings
No
Ye s
Rolloff
Phase
Compat
StepSiz
Phase
Pos.
Neg.
Setting Transmitter Output Power
The output power can be set to 25 mW, 50 mW or
100 mW.
Compat
StepSiz
Phase
TxPower
TxPower
25 mW
50 mW
100 mW
Recorded File Naming
Choose to name the recorded files by the sequence
number or by the clock time.
TxPower
Naming
SD Info
Default
Naming
Seq #
Clock
Rio Rancho, NM
13
SMWB Series
10k
1k
5
4
3
2
1
To Audio Amplifier
5V SOURCE
MIC
VOLTAGE SELECT
LINE IN
GND
+
15uF
+5 VDC
Servo Bias
Pin 4 to Pin 1 = 0 V
Pin 4 Open = 2 V
Pin 4 to Pin 2 = 4 V
+
To Limiter Control
30uF
500 Ohm
100 Ohm
2.7K
200 Ohm
+
3.3uF
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
Backshell with
strain relief
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.
TA5F Latchlock
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.
14
Insert
Insulator
Cable clamp
Backshell
without strain
relief
6) If necessary, remove the rubber strain relief from
7) Seat the insulator on the insert. Slide the cable
8) Insert the assembled insert/insulator/clamp into
Remove strain relief
if using dust boot
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.
the TA5F backshell by simply pulling it out.
clamp over the and of the insulator and crimp as
shown on the next page.
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.
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
VIEW FROM SOLDER
0.3"
Microphone Cable Termination
for Non-Lectrosonics Microphones
TA5F Connector Assembly
Mic Cord Stripping Instructions
1
23
SIDE OF PINS
4
5
0.15"
Crimping to Shield and Insulation
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.
Rio Rancho, NM
Shield
Crimp these
fingers to
contact the
shield
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.
15
SMWB Series
Comp
In addition to the microphone and line level wiring hook-
A lot of information regarding microphone wiring is also
Input Jack Wiring for Different Sources
ups 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.
atible Wiring for Both Servo Bias Inputs and Earlier Transmitters:
Fig. 1
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
SHIELD
A UDI O
Compatible wiring for microphones such as
Countryman E6 headworn and B6 lavaliere.
Fig. 2
4 VOLT POSITIVE BIAS 2-WIRE ELECTRET
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
Fig. 3 - DPA Microphones
DANISH PRO AUDIO MINIATURE MODELS
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
SHIELD
Compatible wiring for microphones
such as negative bias TRAM models.
NOTE: The resistor value can range from 2k to 4k ohms.
AUDIO
Fig. 5 - Sanken COS-11 and others
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
WITH EXTERNAL RESISTOR
Also used for other 3-wire
lavaliere microphones that
require an external resistor.
SHIELD
DRAIN (BIAS)
SOURCE (AUDIO)
1.5 k
3.3 k
Also see Fig. 9
(N/C)
2.7 k
PIN
PIN
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.
Fig. 7
BALANCED AND FLOATING LINE LEVEL SIGNALS
1
2
3
4
5
4
3
T A5 F
PLUG
1
5
2
XLR JACK
*NOTE: If the output is balanced but 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.
TA 5F
PLUG
Fig. 8
UNBALANCED LINE LEVEL SIGNALS
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).
SLEEVE
TIP
SHIELD
A UDI O
PIN
1
2
3
4
5
4
3
T A5 F
PLUG
1
5
2
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
1
2
3
4
5
4
3
PLUG
5
TA5F
1
2
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.
16
Fig. 6
LO-Z MICROPHONE LEVEL SIGNALS
XLR JACK
Insert 1k resistor in series with pin 3 if attenuation is needed
For low impedance dynamic mics or electret
mics with internal battery or power supply.
Fig. 11
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
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.
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
OR
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
See Fig. 8 on
previous page
Line Level
More Headroom
(20 dB)
2-WIRE MIC 3-WIRE MIC
CAPSULE
Capacitors next
to mic capsule
SHIELD
AUDIO
CONNECTOR
TA5F
CAPSULE
Capacitors in
TA5F connector
SHIELD
AUDIO
BIAS
TA5F
CONNECT
Rio Rancho, NM
17
SMWB Series
Firmware Update
Firmware updates are made using a microSDHC
memory card. Download and copy the following firmware update files to a drive on your computer.
• smwb vX_xx.ldr is the firmware update file, where
“X_xx” is the revision number.
In the computer:
1) Perform a Quick Format of the card. On a Win-
dows-based system, this will automatically format
the card to the FAT32 format, which is the Windows
standard. On a Mac, you may be given several
options. If the card is already formatted in Windows (FAT32) - it will be greyed out - then you do
not need to do anything. If the card is in another
format, choose Windows (FAT32) and then click
“Erase”. When the quick format on the computer is
complete, close the dialogue box and open the file
browser.
2) Copy the smwb vX_xx.ldr file to the memory card,
then safely eject the card from the computer.
In the SMWB:
1) Leave the SMWB turned off and insert the microSDHC memory card into the slot.
2) Hold down both the UP and DOWN arrow buttons
on the recorder and turn the power on.
3) The recorder will boot up into the firmware update
mode with the following options on the LCD:
• Update - Displays a scrollable list of the .ldr files
on the card.
• Power Off - Exits the update mode and turns the
power off.
7) If you re-insert the update card and turn the power
back on for normal use, the LCD will display a message prompting you to format the card:
Format Card?
(files lost)
• No
• Yes
If you wish to record audio on the card, you must
re-format it. Select Yes and press MENU/SEL to
format the card. When the process is complete, the
LCD will return to the Main Window and be ready
for normal operation.
If you choose to keep the card as is, you may re-
move the card at this time.
The firmware update process is managed by a bootloader program - on very rare occasions, you might
need to update the bootloader.
WARNING: Updating the bootloader can
corrupt your unit if interrupted. Don’t update
the bootloader unless advised to do so by the
factory.
• smwb_boot vX_xx.ldr is the bootloader file
Follow the same process as with a firmware update and
select the smwbboot file.
NOTE: If the unit screen shows FORMAT CARD?,
power the unit off and repeat step 2. You were not
properly pressing UP, DOWN and Power at the
same time.
4) Use the arrow buttons to select Update. Use the
UP and DOWN arrow buttons to select the desired
file and press MENU/SEL to install the firmware.
The LCD will display status messages while the
firmware is being updated.
5) When the update is complete, the LCD will display
this message: UPDATE SUCCESSFUL REMOVE
CARD. Open the battery door and remove the
memory card.
6) Re-attach the battery door and power the unit back
on. Verify that the firmware version was updated by
opening the Power Button Menu and navigating to
the About item. See page 6.
18
LECTROSONICS, INC.
Recovery Process
In the event of a battery failure while the unit is recording, a recovery process is available to restore
the recording in proper format. When a new battery is
installed and the unit is turned back on, the recorder
will detect the missing data and prompt you to run the
recovery process. The file must be recovered or the
card will not be usable in the SMWB.
First it will read:
Interrupted Recording
Found
The LCD message will ask:
Recover?
for safe use
see manual
You will have the choice of No or Yes (No is selected
as the default). If you wish to recover the file, use the
DOWN arrow button to select Yes, then press MENU/
SEL.
The next window will give you the option to recover all
or part of the file. The default times shown are the best
guess by the processor where the file stopped recording. The hours will be highlighted and you can either
accept the value shown or select a longer or shorter
time. If you are unsure, simply accept the value shown
as the default.
Press MENU/SEL and the minutes are then highlighted.
You can increase or decrease the time to be recovered.
In most cases you can simply accept the values shown
and the file will be recovered. After you have made your
time choices, press MENU/SEL again. A small GO!
symbol will appear next to the DOWN arrow button.
Pressing the button will initiate the file recovery. The
recovery will happen quickly and you will see:
Recovery
Successful
Special Note:
Files under 4 minutes long may recover with additional
data “tacked on” to the end of the file (from previous
recordings or data if the card had been used previously). This can be effectively eliminated in post with a
simple delete of the unwanted extra “noise” at the end
of the clip. The minimum recovered length will be one
minute. For example, if the recording is only 20 seconds
long, and you have selected one minute there will be
the desired 20 recorded seconds with an additional 40
seconds of other data and or artifacts in the file. If you
are uncertain about the length of the recording you can
save a longer file - there will simply be more “junk” at
the end of the clip. This “junk” may include audio data
recorded in earlier sessions that were discarded. This
“extra” information can be easily deleted in post production editing software at a later time.
Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM
19
SMWB Series
Silver Paste on SM Series
Transmitter Thumbscrews
Silver paste is applied to thumbscrew threads on new
units at the factory to improve the electrical connection
from the battery compartment through the housing on
any SM Series transmitter. This applies to the standard
battery door and the battery eliminator.
Threads
provide
electrical
contact
The small enclosed vial contains a tiny amount (25 mg)
of silver conductive paste. A small speck of this paste
will improve the conductivity between the battery cover
plate thumbscrew and the case of the SM.
Simply hold the cloth around the threads and turn the
thumbscrew. Move to a new spot on the cloth and do it
again. Do this until the cloth remains clean. Now, clean
the threads in the case by using a dry cotton swab (Qtip) or equivalent. Again, clean the case threads until a
fresh cotton swab comes away clean.
Open the vial, and transfer a pinhead speck of silver
paste to the second thread from the end of the thumbscrew. A easy way to pickup a speck of paste is to
partially unfold a paper clip and use the end of the wire
to acquire a tiny bit of paste. A toothpick will also work.
An amount that covers the end of the wire is sufficient.
Apply paste to second thread
from end of thumbscrew
The tiny vial is about
1/2 inch tall and
contains 25 mg of
silver paste.
With improved conductivity (lower resistance) more of
the battery voltage can get to the internal power supplies causing reduced current drain and longer battery
life. Though the amount seems very small, it is enough
for years of use. It is, in fact, 25 times the amount that
we use on the thumbscrews at the factory.
To apply the silver paste, first completely remove the
cover plate from the SM housing by backing the thumbscrew completely out of the case. Use a clean, soft
cloth to clean the threads of the thumbscrew.
It is not necessary to spread the paste more than a little
bit on the thread as the paste will spread itself every
time the thumbscrew is screwed in and out of the case
during battery changes.
Do not apply the paste to any other surfaces. The cover
plate itself can be cleaned with a clean cloth by rubbing
the slightly raised rings on the plate where it contacts
the battery terminal. All you want to do is to remove any
oils or dirt on the rings. Do not abrade these surfaces
with a harsh material such as a pencil eraser, emery
paper, etc., as this will remove the conductive nickel
plating and expose the underlying aluminum, which is a
poor contact conductor.
NOTE: Do NOT use alcohol or a liquid cleaner.
20
LECTROSONICS, INC.
Straight Whip Antennas
Whip Length
Antennas are supplied by the factory according to the
following table:
BAND BLOCKS COVERED SUPPLIED
ANTENNA
A1 470, 19, 20 AMM19
B1 21, 22, 23 AMM22
Digital Hybrid Wireless Belt-Pack Transmitters
The supplied caps can be used several different ways:
1) A color cap on the end of the whip
2) A color sleeve next to the connector with a black
cap on the end of the whip (trim the closed end of
the colored cap off with scissors to make a sleeve).
3) A color sleeve and color cap (cut the cap in half
with scissors).
This is a full size cutting template used to cut the length
of the whip for a particular frequency. Lay the uncut
antenna on top of this drawing and trim the whip length
to the desired frequency.
After cutting the antenna to the desired length, mark the
antenna by installing a color cap or sleeve to indicate
the frequency. Factory labeling and marking is listed in
the table below.
944
Note: Check the scale of your printout. This line should be 6.00 inches long (152.4 mm).
29
23
24
25
26
27
28
Factory Marking and Labeling
BLOCK FREQUENCY
RANGE
470 470.100 - 495.600 Black w/ Label 5.67 in./144.00 mm.
19 486.400 - 511.900 Black w/ Label 5.23 in./132.80 mm.
20 512.000 - 537.575 Black w/ Label 4.98 in./126.50 mm.
21 537.600 - 563.100 Brown w/ Label 4.74 in./120.40 mm.
22 563.200 - 588.700 Red w/ Label 4.48 in./113.80 mm.
23 588.800 - 607.950 Orange w/ Label 4.24 in./107.70 mm.
Shaded cells are factory marking and labeling
NOTE: Not all Lectrosonics products are built on all of the blocks
covered in this table. Factory supplied antennas precut to length include
a label with the frequency range. Label is not supplied with this kit.
CAP/SLEEVE
COLOR
ANTENNA LENGTH
22
21
20
19
470
Rio Rancho, NM
21
SMWB Series
Belt Clips and Pouches
SMWB Single Battery Model
SMWBBCUP
SMWBBCDN
SMWBBCUPSL
Wire clip for
single battery
model; antenna
points UP when
unit is worn on a
belt.
Wire clip for
single battery
model; antenna
points DOWN
when unit is
worn on a belt.
Spring-loaded
clip; antenna
points UP when
unit is worn on a
belt.
SMDWB Dual Battery Model
SMDWBBCSL
Wire clip for dual
battery model
antenna points
UP when unit is
worn on a belt;
can be installed
for UP or DOWN
antenna.
SMDWBBCSL
Spring-loaded
clip for dual
battery model;
can be installed
for UP or DOWN
antenna.
PSMDWB
Sewn leather pouch
for dual battery
model; plastic
window allows
access to control
panel.
SMWBBCDNSL
PSMWB
Spring-loaded
clip; antenna
points DOWN
when unit is
worn on a belt.
Sewn leather pouch
for single battery
model; plastic
window allows
access to control
panel.
22
LECTROSONICS, INC.
Miscellaneous Accessories
SMKITTA5
Mic cable not included
TA5 connector kit; with sleeves for small or larger cable;
mic cable not included
SMSILVER
Small vial of silver paste for
use on battery door retaining
knob threads
Digital Hybrid Wireless Belt-Pack Transmitters
55010
35924
MicroSDHC
memory card with
SD adapter. UHS-I;
Class 10; 16 GB.
Brand may vary.
Foam insulating pads
attached to the side
of the transmitter
when it is worn very
close to or on the
user’s skin.
(pkg of two)
Rio Rancho, NM
23
SMWB Series
LectroRM
By New Endian LLC
LectroRM is a mobile application for iOS and Android
smart phone operating systems. Its purpose is to make
changes to the settings on select Lectrosonics transmitters by delivering encoded audio tones to the microphone attached to the transmitter. When the tone enters
the transmitter, it is decoded to make a change to a variety of different settings such as input gain, frequency
and a number of others.
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.
The settings and values that can be changed vary from
one transmitter model to another. The complete list of
available tones in the app is as follows:
• Input gain
• Frequency
• Sleep Mode
• Panel LOCK/UNLOCK
• RF output power
• Low frequency audio roll-off
• LEDs ON/OFF
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 pressed and held to activate the tone. 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 be turned on.
• 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 remote control function must be enabled on
the transmitter.
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 tone. 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 phone’s speaker, which is at the bottom of the device, closer to the transmitter microphone.
24
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
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.
4. Check for correct pilot tone indication on the receiver. See item on
page 16 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 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. 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 21
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.
Rio Rancho, NM
25
SMWB Series
Specifications
Transmitter
Operating frequencies:
Band A1: 470.100 - 537.575
Band B1: 537.600 - 607.950
Channel Spacing: Selectable; 25 or 100 kHz
RF Power output: Switchable; 25, 50 or 100 mW
Compatibility Modes: Nu Hybrid, Mode 3, IFB
Pilot tone: 3.5 kHz deviation (Nu Hybrid)
Frequency stability: ± 0.002%
Spurious radiation: Compliant with ETSI EN 300 422-1 v1.4.2
Equivalent input noise: –125 dBV, A-weighted
Input level:
If set for dynamic mic: 0.5 mV to 50 mV before limiting
Greater than 1 V with limiting
If set for electret lavaliere mic: 1.7 uA to 170 uA before limiting
Greater than 5000 uA (5 mA) with limiting
Line level input: 17 mV to 1.7 V before limiting
Greater than 50 V with limiting
Input impedance:
Dynamic mic: 300 Ohms
Electret lavaliere: Input is virtual ground with servo adjusted
constant current bias
Line level: 2.7 k ohms
Input limiter: Soft limiter, 30 dB range
Bias voltages: Fixed 5 V at up to 5 mA
Selectable 2 V or 4 V servo bias for any electret
lavaliere
Gain control range: 44 dB; panel mounted membrane switches
Modulation indicators: Dual bicolor LEDs indicate modulation
–20, -10, 0, +10 dB referenced to full modulation
Controls: Control panel w/ LCD and 4 membrane switches
Low frequency roll-off: Adjustable from 35 to 150 Hz
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
(Note: the dual envelope “soft”
limiter provides exceptionally
good handling of transients
using variable attack and release
time constants. The gradual onset of limiting in the design begins below full modulation,
which reduces the measured figure for SNR without limiting by 4.5 dB)
Total Harmonic Distortion: 0.2% typical (400 Series mode)
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Flexible, unbreakable steel cable.
SmartNR No Limiting w/Limiting
OFF 103.5 108.0
NORMAL 107.0 111.5
FULL 108.5 113.0
Battery: AA, lithium recommended, disposable
Battery Life w/ Lithium AA:
SMWB 50 mW (1 AA): 5.8 hrs
SMWB 100 mW (1 AA): 4.4hrs
SMDWB 50 mW (2 AA): 11.6 hrs
SMDWB 100 mW (2 AA): 11.2 hrs
Weight (w/ litium batteries): SMWB: 3.2 oz. (90.72 grams)
SMDWB: 4.0 oz. (113.40 grams)
Overall Dimensions: SMWB: 2.366 x 1.954 x 0.642 inches;
(without microphone) 60.096 x 49.632 x 16.307 mm
SMDWB: 2.366 x 2.475 x 0.642 inches;
60.096 x 62.865 x 16.307 mm
Emission Designator: 110KF3E
Recorder
Storage media: microSDHC memory card
File format: .wav files (BWF)
A/D converter: 24-bit
Sampling rate: 44.1 kHz
Recording modes/Bit rate:
• HD mono mode: 24 bit - 144 kbytes/s
32 bit - 192 kbytes/s
• Split gain mode: 24 bit - 288 kbytes/s
32 bit - 384 kbytes/s
Input
Type: Analog mic/line level compatible;
servo bias preamp for 2V and 4V lavaliere
microphones
Input level: • Dynamic mic: 0.5 mV to 50 mV
• Electret mic: Nominal 2 mV to 300 mV
• Line level: 17 mV to 1.7 V
Input connector: TA5M 5-pin male
Audio Performance
Frequency response: 20 Hz to 20 kHz; +0.5/-1.5 dB
Dynamic range: 110 dB (A), before limiting
Distortion: < 0.035%
Operating temperature range
Celsius: -20 to 50
Fahrenheit: -5 to 122
Specifications subject to change without notice.
26
LECTROSONICS, INC.
Digital Hybrid Wireless Belt-Pack Transmitters
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 581 Laser Rd. (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
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
27
m
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.co
19 October 2018
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