Lectrosonics SMB Series User manual

SMDB/E01 Dual battery
SMB/E01 Single battery
SMDB/E02 Dual battery
SMB/E02 Single battery
SMBATELIM Battery
INSTRUCTION MANUAL
Fill in for your records:
Serial Number:
Purchase Date: Rio Rancho, NM, USA
www.lectrosonics.com
US Patent 7,225,135
SMB Series
Super Miniature Transmitters
With Digital Hybrid Wireless®Technology

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
2
Table of Contents
Introduction.............................................................................................................................................................................................3
General Technical Description ..............................................................................................................................................................4
Servo Bias Input...................................................................................................................................................................................4
Digital Hybrid Wireless®Technology....................................................................................................................................................4
No Pre-Emphasis/De-Emphasis .........................................................................................................................................................4
Low Frequency Roll-Off.......................................................................................................................................................................4
Input Limiter .........................................................................................................................................................................................4
Signal Encoding and Pilot Tone ..........................................................................................................................................................5
Microprocessor Control.......................................................................................................................................................................5
Compatibility Modes............................................................................................................................................................................5
Control Panel .......................................................................................................................................................................................5
Battery Options and Operating Time ..................................................................................................................................................5
Frequency Blocks ................................................................................................................................................................................5
Circulator/Isolator ................................................................................................................................................................................5
Controls and Functions..........................................................................................................................................................................6
LCD Screen ..........................................................................................................................................................................................6
Power LED ...........................................................................................................................................................................................6
Power LED Off Feature........................................................................................................................................................................6
Audio Input Jack..................................................................................................................................................................................6
AUDIO Button ......................................................................................................................................................................................6
FREQ Button ........................................................................................................................................................................................6
Up/Down Arrows..................................................................................................................................................................................6
Antenna ................................................................................................................................................................................................7
Setup Screens.........................................................................................................................................................................................7
Audio Screen........................................................................................................................................................................................7
Frequency Screen................................................................................................................................................................................7
Lock/Unlock Screen ............................................................................................................................................................................7
Remote Control Operation ..................................................................................................................................................................7
Configuring for Power Restore............................................................................................................................................................7
Battery and Battery Eliminator Installation..........................................................................................................................................8
Operating Instructions ...........................................................................................................................................................................8
Power Up and Boot Sequence............................................................................................................................................................8
Power Down.........................................................................................................................................................................................8
Standby Mode......................................................................................................................................................................................9
Selecting the Compatibility Mode.......................................................................................................................................................9
Setting Transmitter Operating Frequency...........................................................................................................................................9
Locking or Unlocking the Controls .....................................................................................................................................................9
Adjusting Audio Level (Gain) .............................................................................................................................................................10
Locking or Unlocking the Controls ...................................................................................................................................................10
Attaching and Removing the Microphone........................................................................................................................................10
5-Pin Input Jack Wiring........................................................................................................................................................................11
Installing the Connector: ...................................................................................................................................................................11
Microphone Cable Terminationfor Non-Lectrosonics Microphones...............................................................................................12
Microphone RF Bypassing................................................................................................................................................................13
Line Level Signals ..............................................................................................................................................................................13
Wiring Hookups for Dierent Sources................................................................................................................................................14
LectroRM...............................................................................................................................................................................................15
Troubleshooting....................................................................................................................................................................................16
Straight Whip Antennas .......................................................................................................................................................................18
Included Accessories...........................................................................................................................................................................19
Optional Accessories ...........................................................................................................................................................................19
Specications and Features................................................................................................................................................................20
Service and Repair ...............................................................................................................................................................................21
Returning Units for Repair.................................................................................................................................................................21

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 3
Introduction
The SMB Series transmitters are the product of many
years of engineering and experience in professional
audio markets. The unique design provides several
distinct features for professional applications:
• Superb, compandor-free audio quality
• Ultra-lightweight, corrosion resistant housing
• Water resistant seals for use in damp environ-
ments
• Programmable compatibility modes for use with
a wide variety of dierent receivers
The Digital Hybrid Wireless®design (US Patent
7,225,135) combines 24-bit digital audio with analog
FM resulting in a system that has the same operating
range as analog systems, the same spectral eciency
as analog systems, the same long battery life as analog
systems, plus the excellent audio delity typical of pure
digital systems.
The transmitters feature the unique servo bias input
circuitry with a standard TA5M type input jack for use
with electret lavaliere mics, dynamic mics, or line level
signals. A water resistant control panel with LCD, mem-
brane switches and multi-color LEDs make input gain
adjustments, frequency and compatibility mode selec-
tion quick and accurate, without having to view the
receiver. The battery compartment accepts AA lithium
or rechargeable batteries. The housings are machined
from solid aluminum blocks to provide an extremely
lightweight and rugged package. A special non-corro-
sive nish resists salt water exposure and perspiration
in extreme environments.
The DSP-based design works with Euro version Digital
Hybrid and IFB receivers.
The SMB/E01 and SMDB/E01 may be operated in:
AT BE BG CH CY CZ
DE DK EE FI FR GR
HU IE IS LT LU LV
MT NL NO PT RO SE
SI SK UK
The use of these transmittters requires a license and is
subject to national restrictions on frequency selection
and channel spacing.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
4
Variable 1.8 - 4v
+6V
+5V 5V
Regulator
Servo Bias Input
The voltage and current requirements of the wide vari-
ety of electret microphones used in professional appli-
cations has caused confusion and compromises in the
wiring needed for wireless transmitters. To address this
problem, the unique Servo Bias input circuit provides
an automatically regulated voltage over a very wide
range of current for compatibility with all microphones.
Digital Hybrid Wireless
®
Technology
All wireless links suer from channel noise to some
degree, and all wireless microphone systems seek to
minimize the impact of that noise on the desired sig-
nal. Conventional analog systems use compandors for
enhanced dynamic range, at the cost of subtle artifacts
(typically “pumping” and “breathing”). Wholly digital sys-
tems defeat the noise by sending the audio information
in digital form, at the cost of some combination of power,
bandwidth and resistance to interference.
Digital Hybrid systems overcome 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 tech-
nique that can be accomplished only in the digital do-
main, even though the inputs and outputs are analog.
Because it uses an analog FM link, the Digital Hybrid
system enjoys all the benets of conventional FM wire-
less systems and it does away with the analog com-
pandor and its artifacts.
General Technical Description
No Pre-Emphasis/De-Emphasis
The Digital Hybrid design results in a signal-to-noise ratio
high enough to preclude the need for conventional pre-
emphasis (HF boost) in the transmitter and de-emphasis
(HF roll o) in the receiver. This eliminates the potential
for distortion of signals with abundant high-frequency
information.
Low Frequency Roll-O
The low frequency roll-o can be set for a 3 dB down
point at 35, 50, 70, 100, 120 and 150 Hz to control
subsonic and very low frequency audio content in
the audio. The actual roll-o frequency will vary slightly
depending upon the low frequency response of the
microphone.
Excessive low frequency content can drive the trans-
mitter into limiting, or in the case of high level sound
systems, can even cause damage to loudspeaker
systems. The roll-o is normally adjusted by ear while
listening as the system is operating.
Input Limiter
A DSP-controlled analog audio limiter is employed
before the A-D converter. The limiter has a range of
more 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, a fast attack and
release limiter followed by a slow attack and release
limiter. The limiter recovers quickly from brief tran-
sients, with no audible side eects, and also recovers
slowly from sustained high levels to keep audio distor-
tion low while preserving short term dynamics.

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 5
Signal Encoding and Pilot Tone
In addition to controlling the limiter, the DSP also en-
codes the digitized audio from the A/D converter and
adds an ultrasonic pilot tone to control the squelch in
the receiver. A pilot tone squelch system provides a reli-
able method of keeping a receiver output muted when
the squelch is active, even in the presence of signi-
cant interference. When the system is operating in the
hybrid mode, a dierent pilot tone frequency is gen-
erated for each carrier frequency to prevent squelch
problems in multi-channel systems.
Microprocessor Control
A microprocessor monitors user command inputs from
the control panel buttons and numerous other internal
signals. It works intimately with the DSP to ensure the
audio is encoded according to the selected Compat-
ibility Mode and that the correct pilot tone is added to
the encoded signal.
Compatibility Modes
SMB transmitters are designed to operate with Lectro-
sonics Digital Hybrid receivers and will yield the best
performance when doing so, however, due to the ex-
ibility of digital signal processing, they can also operate
with Lectrosonics Euro version IFB receivers.
Control Panel
The control panel includes four membrane switches and
an LCD screen to adjust the operational settings. Multi-
color LEDs are used to indicate audio signal levels for
accurate gain adjustment and for battery status.
Battery Options and Operating Time
Switching power supplies convert regulated battery
voltages to operate various circuit stages with maxi-
mum eciency. With the variety of alkaline, lithium and
rechargeable NiMH batteries available today in the AA
format, there are many choices to maximize operating
time or minimize cost as needed for any application.
The rmware “remembers” the power status when a
battery fails or power is disconnected, so the trans-
mitter will be turned on automatically when power is
restored and previous settings will be enabled.
Frequency Blocks
Lectrosonics established a “block” numbering system
years ago to organize the range of frequencies that
are available. Legacy transmitters and receivers used
two binary switches, each with 16 positions, to set the
operating frequency. 16 x 16 = 256, which dened the
standard number of frequencies in each block to be
256. Since the steps between frequencies is 100 kHz,
this results in a switching range of 25.6 MHz.
The lowest frequency in the switching range divided by
25.6 yields the block number. For example, 640.000 di-
vided by 25.6 equals 25. In other words, block 25 starts
at 640.000 MHz.
To determine what block a particular frequency falls
into, divide the frequency and use the two signicant
digits to the left of the decimal. For example, to cal-
culate the block for 580.500 MHz, divide 580 by 25.6,
which equals 22.656, which indicates block 22.
Circulator/Isolator
The RF output circuit includes a one way circulator/iso-
lator using a magnetically polarized ferrite. This device
greatly reduces RF intermodulation produced when
multiple transmitters are used in close proximity to one
another (a meter or two, or less). The isolator also pro-
tects the output amplier against static shock.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
6
Controls and Functions
LCD Screen
The LCD is a numeric-type Liquid Crystal Display with
screens for adjusting power, frequency, audio level and
low frequency audio roll-o. The transmitter can be
powered up with or without the RF output turned on. A
countdown appears in the LCD when powering on and
o, allowing the transmitter to be turned on without RF
for adjustments, and to prevent accidentally turning it
o with momentary button presses.
Power LED
The PWR LED glows green when the battery is good.
The color changes to red at a mid-point of operating
life, and will continue to glow red until the battery gets
close to the end of its life. When the LED begins to
blink red, there are only a few minutes remaining.
The exact point at which the LED turns red will vary
with battery brand and condition, temperature and
current drain. The LED is simply a reminder intended to
catch your attention, not an exact indicator of remain-
ing time.
1.6
1.4
1.2
1.0
.8
2468
Hours
Voltage
Varies
Green RedBlink
Example of AA lithium battery in SMB transmitter
A NiMH rechargeable battery will give little or no warn-
ing when it is depleted because the voltage does not
vary much during its operating life. If you wish to use
NiMH batteries, we recommend trying fully charged
batteries in the unit and using the battery timer feature
available in most receivers to determine the available
operating time.
A weak battery will sometimes cause the PWR LED to
glow green immediately after the transmitter is turned
on, but the battery will soon discharge to the point
where the LED will turn red or the unit will turn o com-
pletely. When the transmitter is in SLEEP mode, the
LED blinks green every few seconds.
Power LED O Feature
In normal opreating mode, the DOWN and UP Arrow
buttons may be used to turn the PWR LED indicators
o and on. This setting does not persist through a
power cycle nor does it aect the LCD backlight.
Audio Input Jack
The Servo Bias input circuitry accommodates virtually
every lavaliere, handheld or shotgun microphone avail-
able, plus line level signals.
Modulation LEDs
Proper input gain adjustment is critical to ensure the
best audio quality. Two bicolor LEDs will glow either red
or green to accurately indicate modulation levels. The
input circuitry includes a wide range DSP controlled
limiter to prevent distortion at high input levels.
It is important to set the gain (audio level) high enough
to achieve full modulation during louder peaks in the
audio. The limiter can handle over 30 dB of level above
full modulation, so with an optimum setting, the LEDs
will ash red during use. If the LEDs never ash red, the
gain is too low. In the table below, +0 dB indicates full
modulation.
Signal Level -20 LED -10 LED
Less than -20 dB O O
-20 dB to -10 dB Green O
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 db Red Red
AUDIO Button
The AUDIO button is used to display the audio level
and low frequency roll-o settings. The UP and DOWN
arrows adjust the values.
The AUDIO button is also used with the FREQ button to
enter standby mode and to turn the transmitter on or o.
FREQ Button
The FREQ Button displays the selected operating fre-
quency and also toggles the LCD between displaying
the actual operating frequency in MHz and a two-digit
hexadecimal number that corresponds to the equiva-
lent Lectrosonics Frequency Switch Setting.
The FREQ button is also used with the AUDIO button to
enter standby mode and to turn the transmitter on or o.
Up/Down Arrows
The Up and Down arrow buttons are used to select the
values on the various setup screens and to lock out
the control panel. Pressing both arrows simultaneously
enters the lock countdown. When an attempt is made
to change a setting while the control panel is locked, a
message will ash on the LCD reminding you that the
unit is locked. Once locked, the buttons can only be
unlocked by removing the battery, or via the RM remote
control (if the remote function was enabled in the trans-
Battery
Compartment
Retaining
Screw
Battery
Compartment
Cover Plate
Audio
Input Jack
AUDIO Button
LCD
FREQ Button
Modulation
LEDs
PWR LED
UP Arrow
DOWN Arrow
Antenna
Jack

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 7
Antenna
The transmitter uses a whip antenna with a exible wo-
ven, galvanized steel mesh cable and a standard SMA
connector.
Setup Screens
Audio Screen
The Audio screen is used to
adjust input gain from 0 to
+44 dB, and the low fre-
quency roll-o from 35 to
150 Hz. Repeatedly press-
ing the AUDIO button
toggles back and forth
between the two displays.
Press and hold the AUDIO button and use the Up and
Down arrows to make adjustments.
Frequency Screen
The Frequency Screen
displays the operating
frequency in MHz or as a
two-digit hexadecimal
number that corresponds to
the equivalent Lectrosonics
Frequency Switch Setting.
Repeatedly pressing the
FREQ button toggles between the two displays. Press
and hold the FREQ button and use the Up and Down
arrows to select the frequency.
Lock/Unlock Screen
Simultaneously pressing
and holding both the Up
and Down arrow buttons
during normal operation
starts the Lock timer. The
timer starts at three and
counts down to zero. When
the timer reaches zero, the transmitter’s controls are
locked.
With the controls locked, the AUDIO and FREQ but-
tons can still be used to display current settings. Any
attempt to change a setting by pressing either the Up
or Down arrow button will result in an on-screen Loc
reminder that the controls are locked. Remove the bat-
teries to unlock the control panel.
Important: Once the transmitter is locked, it
cannot be unlocked or powered o using the
buttons. The only ways to unlock a locked
transmitter are to remove the battery or unlock
it using the RM remote control if this function is
enabled on the transmitter.
Remote Control Operation
Remote Control Screens
The transmitters can be
congured to respond to
signals from the LectroRM
app or to ignore them. This
setting is accessed by
holding down the Down
arrow button while powering
the transmitter on.
If a remote signal is detect-
ed but the transmitter is set to rc oFF, the message rc
oFF will be displayed briey on the transmitter’s LCD,
to conrm that a valid signal was received, but that the
transmitter is not congured to respond to it.
Functions available from the remote control are:
• Audio Level
• Frequency
• Lock/Unlock Buttons
• Sleep/Wake (power saving mode)
• Tuning in 25 kHz steps
• Changing the low frequency roll-o setting
• Turning on/o the PWR and Audio LEDs
• Gain up/down functions
In sleep mode, the transmitter uses only 20% of the
normal amount of battery drain. Sleep mode can only
be invoked with the remote control, and can only be
revoked with the remote control or by removing the
battery. When in the sleep mode, the PWR LED blinks
green every few seconds to indicate that the transmitter
is asleep and not turned o.
Conguring for Power Restore
Power Restore Screens
The Power Restore feature
will turn the transmitter back
on with the same settings
that were enabled in the
previous use after a battery is
replaced or external power
has been cycled o and back
on.
1) Press and hold the Down Arrow Button then
power on the transmitter by pressing the
Audio and Freq buttons simultaneously.
2) Press AUDIO or FREQ key to scroll to the setting
and then use the arrow keys to select PbAc 1 for
ON or PbAc 0 for OFF.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
8
Operating Instructions
Power Up and Boot Sequence
1) Ensure that good batteries are installed in the
unit.
2) Simultaneously press and hold the AUDIO and
FREQ buttons until the Power On Boot Sequence
is initiated. As the unit turns on, the Modulation
LEDs and PWR LED all glow red, then green, and
then revert to normal operation.
AUDIO
Button FREQ
Button
Modulation LEDs
PWR LED
The LCD displays a bootup sequence which con-
sists of four screens similar to these examples:
Company Name: Lectro
Frequency Block (bXX) and
Firmware Version (rX.X): b21r1.1
Power Level Pr 50
Compatibility Mode: CP Hbr
Audio: Aud 22
Power Down
Initial Power O
Timer Screen
1) Simultaneously press and hold the AUDIO and
FREQ buttons while observing that the word OFF
appears in the LCD along with a counter.
2) Continue holding the buttons in until the counter
reaches 0, and the unit will then turn o.
Note: If the AUDIO and FREQ buttons are
released before the LCD goes blank at the end
of the countdown, the unit will not turn off.
Instead, it will stay energized and the display
will return to the previous screen.
Battery and Battery
Eliminator Installation
Note: Standard zinc-carbon batteries marked
“heavy-duty” or “long-lasting” are not
adequate.
The battery status circuitry is designed for the voltage
drop over the life of lithium batteries.
To install new batteries:
1. Turn the Battery Cover Plate Thumbscrew coun-
terclockwise a few turns until the door will rotate.
2. Insert the new batteries into the housing. The
positive (+) battery terminal goes into the
transmitter rst.
3. Align the Battery Cover Plate and tighten the Bat-
tery Cover Plate Thumbscrew.
Two battery
compartments
(SMQV)
Gore-Tex®
covered vent
Polarity
engraved into
housing
Do Not
Cover Vent
NOTE: Refer to the
previous section entitled
Configuring for Power
Restore
To install the battery eliminator, loosen the
thumbscrew completely and remove the battery
door. Insert the battery eliminator and tighten the
thumbscrew.
Install plastic cap
on dual battery
model to cover
the open battery
compartment.
Gore - Tex Registered trademark of W. L. Gore and
Associates

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 9
Standby Mode
Standby Screen
Press the AUDIO and FREQ
buttons briey to place the
unit in Standby Mode. In
this mode the RF output is
turned o so all setup
adjustments can be made without interfering with other
systems operating in the same location. The screen
displays rf OFF to remind the user that the unit is not
transmitting.
While the unit is in the standby mode, access the setup
screens using the AUDIO and FREQ buttons and make
adjustments using the Up and Down arrows.
Selecting the Compatibility Mode
Digital Hybrid Wireless®
compatibility mode
IFB compatibility mode
The transmitters will work
with Digital Hybrid and IFB
analog receivers. The unit
automatically enters the
Standby Mode when
selecting compatibility.
1) Set the receiver’s audio
controls to minimum.
2) From a power o
condition, hold down the Up
arrow, then simultaneously
press the AUDIO and FREQ buttons.
3) Press either AUDIO or FREQ button to select the
compatibility screen and use the Up and Down
arrows to select the desired mode.
The following Compatibility Modes are available:
• Digital Hybrid mode: CP Hbr
• IFB Series mode: CP IFb
4) Simultaneously press the AUDIO and FREQ
buttons to exit this mode and turn o the power.
Adjusting the Low Frequency Roll-o
Repeatedly press the AUDIO button until the LF roll-o
adjustment screen appears. Then press and hold the
AUDIO button while selecting the desired roll-o fre-
quency with the UP and DOWN arrows.
The roll-o frequency can be set to 35, 50, 70, 100, 120
and 150 Hz.
Setting Transmitter Operating
Frequency
Frequency displayed
in MHz
Frequency displayed as
two-digit hexadecimal
number
The frequency can be
displayed either in MHz or
as a two-digit hexadecimal
number and can be set in
the Standby Mode or when
the transmitter is powered
up. The hexadecimal
numbering system is unique
to Lectrosonics where two
alphanumeric characters
correspond to the left and
right switch settings on
earlier analog transmitters that used mechanical rotary
switches to adjust frequency. The hexadecimal notation
is also easier to remember than a six character fre-
quency and is supported on the receiver LCD.
1) Press the FREQ button to select either the MHz
screen or the hexadecimal screen.
2) While holding the FREQ button, use the Up or
Down arrow buttons to move the operating fre-
quency up or down from the current setting.
Note: The operating frequency displayed on
the LCD wraps as it reaches the upper or
lower end of its range.
Locking or Unlocking the Controls
Control Panel Locked
The Lock mode protects the
transmitter from accidental
changes to its settings.
Simultaneously press both
the Up and Down arrow
buttons to start the countdown timer. When the timer
reaches zero, “Loc” is displayed and the controls are
locked. Settings can be reviewed but not changed.
Once the transmitter is locked, it cannot be unlocked or
powered o using the buttons. The only ways to unlock
a locked transmitter are to remove the battery or unlock it
using the remote control. The remote control will work only
if the transmitter was previously congured to respond
to the remote control. The unit will always power up in
“unlocked” mode.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
10
Adjusting Audio Level (Gain)
The control panel Modulation LEDs indicate the audio
level and limiter activity. Once set, the transmitter’s
audio level setting should not be used to control the
volume of your sound system or recorder levels. This
gain adjustment matches the transmitter gain with the
microphone’s output level, the user’s voice level and
the position of the microphone. The audio input level
(gain) is adjusted with the unit in the Standby Mode or
while powered up while observing the LEDs.
It is desirable to to set the gain so that some limiting
occurs on louder peaks. The limiter is very transparent
and its eect is not audible until the system is close to
overload. In other words, don’t be shy about turning up
the gain. In fact, it is a good idea to turn the gain up to
maximum and listen for distortion or compression to
get a feel for how much headroom the system actually
has.
Signal Level -20 LED -10 LED
Less than -20 dB O O
-20 dB to -10 dB Green O
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 db Red Red
Note: Different voices will usually require
different gain settings, so check this
adjustment as each new person uses the
system. If several different people will be using
the transmitter and there is not time to make
the adjustment for each individual, adjust it for
the loudest voice.
1) With the transmitter powered o, plug in the mi-
crophone and make sure the connector is rmly
seated.
Warning: If the systems is powered up while
connected to a live sound system, be careful
to turn the sound system level down first or
severe feedback can occur.
2) Place the transmitter in Standby Mode or turn it
on for normal use.
3) Position the microphone in the location where it
will be used in actual operation.
4) Observe the Modulation LEDs while speaking or
singing into the microphone at the same voice
level that will be used during use. While holding
the AUDIO button, press the UP or DOWN arrow
buttons until the both the -20 and -10 LEDs glow
green, with the -20 LED occasionally ickering
red. This will maximize the signal to noise ratio
of the system with full modulation and provide
subtle limiting to prevent overload and audible
compression.
5) If the unit was set up in Standby Mode, it will be
necessary to turn the transmitter o, then power it
up again in normal operation so the RF output will
be on. Then the other components in the sound or
recording system can be adjusted.
Locking or Unlocking the Controls
Control Panel Locked
The Lock mode protects the
transmitter from accidental
changes to its settings.
Simultaneously press both
the Up and Down arrow
buttons to start the countdown timer. When the timer
reaches zero, “Loc” is displayed and the controls are
locked. Settings can be reviewed but not changed.
Once the transmitter is locked, it cannot be unlocked or
powered o using the buttons. The only ways to unlock
a locked transmitter are to remove the battery or unlock
it using the remote function. The remote function will
work only if the transmitter was previously congured to
respond. The unit will always power up in “unlocked”
mode.
Attaching and Removing the
Microphone
The exible sleeve over the 5-pin plug on the micro-
phone helps prevent dust and moisture from getting
into the input jack. A ange is machined into the rim
of the connector on the transmitter to help retain the
sleeve after it is installed.
The following procedure simplies the attachment
and removal of the microphone to assure the sleeve is
seated securely.
Align the pins on the plug and jack and insert the con-
nector.
If the sleeve is pulled
down and covering the
connector, squeeze the
end of the sleeve so you
can feel the connector
inside and press it into
the jack until it latches.
Pinch and
squeeze the
sleeve on this
end to work it
down over the
Pinch and squeeze the
sleeve near the ange
and work it down with a
kneading motion over
the ange all the way
around until it stays in
place ush with the
housing. Pull on the
connector to make sure
it is rmly latched.
Release button
To remove the connec-
tor, pull the sleeve back
to expose the black
release button. Press the
button to unlatch the
plug.

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 11
The wiring diagrams included in this section represent
the basic wiring necessary for the most common types
of microphones and other audio inputs. Some micro-
phones 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
diers 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
SM Equivalent Input Circuit Wiring
10k
1k
5
4
3
2
1
To Virt
ual Ground
Audio Amplifier
BIAS
MIC
BIAS SELECT
LINE IN
GND
+30uF
+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
100 Ohm
5-Pin Input Jack Wiring
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.
• PIN 3 Low impedance microphone level input
for dynamic microphones. Also accepts hand-
held electret microphones provided the micro-
phone has its own built-in battery.
• PIN 4 Bias voltage selector for Pin 3. Pin 3
voltage (0, 2 or 4 volts) depends on Pin 4 con-
nection.
Pin 4 tied to Pin 1: 0 V
Pin 4 Open: 2 V
Pin 4 to Pin 2: 4 V
• PIN 5 High impedance, line level input for tape
decks, mixer outputs, musical instruments, etc.
Installing the Connector:
1) If necessary, remove old connector from micro-
phone cable.
2) Slide Rubber Boot onto microphone cable with the
large end facing away from the microphone. (See
illustration above.)
3) If necessary, slide the 1/8-inch black shrink tub-
ing onto the mircrophone cable. (This tubing is
needed for some cables to ensure the cable ts
snugly in the rubber boot.)
4) Use the resistors and connector included with
this kit to congure the TA5F to your particular
microphone. A length of .065 OD clear tubing is
included if insulating the resistor leads or shield
wire is necessary. (Remove rubber strain relief
from connector backshell by pulling it out of the
backshell.)
5) Slide the Strain Relief over the TA5F Insert and
crimp as shown to the right. Then insert the TA5F
Insert and Strain Relief in the TA5F Latchlock.
Screw the TA5F Flex Relief onto the TA5F Latch-
lock.
6) If needed, position and shrink the 1/8-inch shrink
tubing on the microphone cable, then slide the
Rubber Boot down over the TA5F connector.
TA5F Latchlock Insert
Insulator Cable clamp
TA5F Backshell
with Strain Relief
Remove strain relief
if using dust boot
TA5F Backshell
(Strain Relief
removed) 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.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
12
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 than
what is shown here.
Microphone Cable Termination
TA5F Connector Assembly
Mic Cord Stripping Instructions
1
23
4
5
VIEW FROM SOLDER
SIDE OF PINS
0.3"
0.15"
Crimping to Shield and Insulation
Shield
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.
Crimp these
ngers to
contact the
shield
Crimp these
ngers to
clamp the
insulation

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 13
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
the microphone/transmitter compatibility. If the electret
microphone is not designed properly for use with wire-
less 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 aecting the capsule, even though the
transmitter input circuitry is already RF bypassed (see
schematic diagram).
If the mic is wired as directed, and you are having dif-
culty 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 con-
nector housing.
Install the capacitors as follows: Use 330 pF capaci-
tors. 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 normal hookup for line level 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.
If more headroom is needed, insert a 20 k resistor in
series with pin 5. Put this resistor inside the TA5F con-
nector to minimize noise pickup.
3 WIRE MIC2 WIRE MIC
CAPSULE CAPSULE
SHIELD
AUDIO
SHIELD
AUDIO
BIAS
Alternate locations for bypass capacitors
TA5F
CONNECTOR
TA 5F
CONNECTOR
Preferred locations for bypass capacitors

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
14
Wiring Hookups for Dierent Sources
BALANCED AND FLOATING LINE LEVEL SIGNALS
*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 TA 5F connector.
TA 5F
PLUG
XLR JACK
Fig. 7
Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters:
Simple Wiring - Can ONLY be used with
Servo Bias Inputs:
Servo Bias was introduced in 2005 and all trans-
mitters with 5-pin inputs have been built with this
feature since 2007.
In addition to the microphone and line level wiring hook-
ups illustrated below, Lectrosonics makes a number of
cables and adapters for other situations such as con-
necting musical instruments (guitars, bass guitars, etc.)
to the transmitter. Visit www.lectrosonics.com and
click on Accessories, or download the master catalog.
A lot of information regarding microphone wiring is also
available in the FAQ section of the web site at:
http://www.lectrosonics.com
Hover over Support and click on FAQs. Follow the instructions
to search by model number or other search options.
SHIELD
TIP
PIN
5
4
3
2
1
SLEEVE
LINE LEVEL
RCA or 1/4” PLUG
AUDIO 1
2
3
4 5
TA5F
PLUG
UNBALANCED LINE LEVEL SIGNALS
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).
Fig. 8
1
2
3
4
5
PIN
SHIELD
AUDIO
1
2
3
45
TA5F
PLUG
2.7 k
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET
Compatible wiring for microphones
such as negative bias TRAM models.
NOTE: The resistor value can range from 2k to 4k ohms.
Fig. 4
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.
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
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. 9
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. 10
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET
Simplified wiring for microphones such as negative bias TRAM.
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
Fig. 6
LO-Z MICROPHONE LEVEL SIGNALS
For low impedance dynamic mics or electret
mics with internal battery or power supply.
XLR JACK
Insert 1k resistor in series with pin 3 if attenuation is needed
Fig. 1
1
2
3
4
5
PIN
SHIELD
AUDIO 1
2
3
4 5
TA5F
PLUG
3.3 k
1.5 k
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Compatible wiring for microphones such as
Countryman E6 headworn and B6 lavaliere. Also see Fig. 9
4 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Most common type of wiring for
lavaliere mics.
Fig. 2
WIRING FOR LECTROSONICS M152/5P
(N/C)
WHITE
RED
The M152 lavaliere microphone
has an internal resistor and can be
wired in a 2-wire configuration.
This is the factory standard wiring.
Fig. 5 - Sanken COS-11 and others
DRAIN (BIAS)
SOURCE (AUDIO)
SHIELD
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
WITH EXTERNAL RESISTOR
Also used for other 3-wire
lavaliere microphones that
require an external resistor.

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 15
LectroRM
By New Endian LLC
LectroRM is a mobile application for iOS and Android
operating systems. Its purpose is to remotely control
Lectrosonics Transmitters, including:
• SM Series
• WM
• L Series
The app remotely changes settings on the transmit-
ter through the use of encoded audio tones, which
when received by the attached microphone, will alter
the congured setting. The app was released by New
Endian, LLC in September 2011. The app is available
for download and sells for $25 on the Apple App Store
and Google Play Store.
LectroRM’s remote control mechanism is the use of an
audio sequence of tones (dweedles) that are interpret-
ed by the transmitter as a conguration change. The
settings available in LectroRM are:
• Audio Level
• Frequency
• Sleep Mode
• Lock Mode
User Interface
The user interface involves selecting the audio se-
quence 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
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 congured 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.
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 congurable 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 o; it can
however be in sleep mode.
• The transmitter must have rmware version
1.5 or later for Audio, Frequency, Sleep and
Lock changes.
• The transmitter microphone must be
within range.
• The transmitter must be congured to enable
remote control activation.
Please be aware this app is not a
Lectrosonics product. It is privately
owned and operated by New Endian LLC,
www.newendian.com.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
16
Before going through the following chart, be sure that you have a good battery in the transmitter. It is important
that you follow these steps in the sequence listed.
SYMPTOM POSSIBLE CAUSE
TRANSMITTER PWR LED OFF 1) Battery is inserted backwards or dead.
2) Transmitter not powered up. (See Operating Instructions,
Power UP and Boot Sequence.)
TRANSMITTER PWR LED BLINKS GREEN EVERY FEW SECONDS, TRANSMITTER
DOES NOT RESPOND OTHERWISE 1) Transmitter has been put to sleep by remote.
Either use the remote function to wake it up again or remove
and reinsert the transmitter’s battery.
AUDIO LEVEL LEDs NOT LIGHTING 1) Gain control set to minimum.
2) Battery is dead or installed backwards. Check PWR LED.
3) Mic capsule is damaged or malfunctioning.
4) Mic cable damaged or mis-wired.
RECEIVER RF INDICATOR OFF 1) Transmitter not turned on, or is in Standby Mode.
2) Transmitter battery is dead.
3) Receiver antenna missing or improperly positioned.
4) Transmitter and receiver not on same frequency.
Check switches/display on transmitter and receiver.
5) Transmitter and receiver not on same frequency block.
6) Operating range is too great.
7) Defective transmitter antenna.
NO SOUND (OR LOW SOUND LEVEL), RECEIVER INDICATES PROPER AUDIO MODULATION
1) Receiver output level set too low.
2) Receiver output disconnected, or cable defective or mis-
wired.
3) Sound system or recorder input is turned down.
DISTORTED SOUND 1) Transmitter gain (audio level) is far too high. Check audio level
LEDs and receiver audio levels during use.
2) Receiver output 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.
(Use the receiver’s Tone function to check level.)
3) Transmitter is not set to same frequency as receiver.
Check
that operating frequency on receiver and transmitter match.
4) Receiver/Transmitter Compatibility Mode mismatched.
EXCESSIVE FEEDBACK 1) Transmitter gain (audio level) too high. Check gain adjustment
and/or reduce receiver output level.
2) Talent standing too close to speaker system.
3) Mic is too far from user’s mouth.
Troubleshooting

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 17
SYMPTOM POSSIBLE CAUSE
HISS AND NOISE -- AUDIBLE DROPOUTS 1) Transmitter gain (audio level) far too low.
2) Receiver antenna missing or obstructed.
3) Transmitter antenna broken or missing.
4) Operating range too great.
5) Signal interference. Turn o transmitter. If receiver’s signal
strength indicator does not drop to nearly zero, this indicates
an interfering signal may be the problem.
Try a dierent operating frequency.
“Loc” APPEARS IN DISPLAY WHEN ANY BUTTON IS PRESSED
1) Control Panel is locked. (See Operating Instructions, Locking
and Unlocking the Control Panel.)
“Hold” APPEARS IN DISPLAY WHEN ARROW BUTTONS ARE PRESSED
1) Reminder that it is necessary to hold down the AUDIO or
FREQ button to make adjustments to the audio gain or
frequency settings.
“PLL” APPEARS IN DISPLAY 1) Indication that the PLL is not locked. This is a serious
condition
that requires factory repair. It may be possible to operate on
another frequency far removed from the one that was selected
when the condition was indicated.
TRANSMITTER WON’T RESPOND TO REMOTE
1) If LCD blinks “rc oFF”, transmitter has not been congured
to respond to the remote function. See “Remote
Operation” on page 16 for instructions on how to congure.
2) If LCD blinks “- - - - - -”, transmitter is already set as
requested by remote.
3) If transmitter does not respond at all, try moving closer to the
transmitter.
4) Make sure transmitter is not in Sleep mode.

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
18
21
22 23 24 25 26 27 28 29
20 19
470
944
Note: Check the scale of your printout. This line should be 6.00 inches long (152.4 mm).
Whip Length
Straight Whip Antennas
The Lectrosonics AMMKIT provides the parts to make
an antenna with a standard SMA connector for any of
the available frequency blocks. Cut the whip accord-
ing to the lengths in the table below or by laying the
antenna over the template to determine the correct
length. Be sure to check the scale of your printout by
measuring the length of the line below the drawing.
470 470.100 - 495.600 Black w/ Label 5.67”
19 486.400 - 511.900 Black w/ Label 5.23”
20 512.000 - 537.500 Black w/ Label 4.98”
21 537.600 - 563.100 Brown w/ Label 4.74”
22 563.200 - 588.700 Red w/ Label 4.48”
23 588.800 - 614.300 Orange w/ Label 4.24”
606 606.000 - 631.500 (Use Block 24 Ant)
24 614.400 - 639.900 Yellow w/ Label 4.01”
25 640.000 - 665.500 Green w/ Label 3.81”
26 665.600 - 691.100 Blue w/ Label 3.62”
27 691.200 - 716.700 Violet (Pink) w/ Label 3.46”
28 716.800 - 742.300 Grey w/ Label 3.31”
29 742.400 - 767.900 White w/ Label 3.18”
30 768.000 - 793.500 Black-w/Label 3.08”
31 793.600 - 819.100 Black-w/Label 2.99”
32 819.200 - 844.700 Black-w/Label 2.92”
33 844.800 - 861.900 Black-w/Label 2.87”
BLOCK FREQUENCY CAP/SLEEVE ANTENNA
RANGE COLOR WHIP LENGTH
The frequency range and/or block is marked on the
outside of the transmitter housing.
Unmarked antennas can be identied by laying them
on the template below. Be sure to verify that a print out
is at 100% by checking the length of the line below the
antenna drawing.

Super-Minature Belt Pack Transmitters
Rio Rancho, NM 19
SMKITTA5 Connector kit for SMV series
transmitters, 5-pin TA5F plug with sleeve
SMBCDN Machined, wire belt clip for SMV
transmitters, antenna down
Included Accessories
SMBCUPSL Spring-loaded
machined aluminum clip
PSM Leather pouch with
integrated belt clip
SMDBCSL Spring-loaded
machined aluminum
clip
35924 Themal insulating pad
for SMDB
Place Thermal
insulation pad on
back of unit, as
pictured.
PSMD Leather pouch with
integrated belt clip
SMDB:
Optional Accessories
SMBCUP Machined, wire belt clip for SMV
transmitters, antenna up
SMDBC Machined, wire belt clip for SMQV
and transmitters
SMB:

SMB/EO1, SMB/E02 Series
LECTROSONICS, INC.
20
Specications and Features
Operating frequencies:
Block 470 470.100 - 495.600
Block 19 486.400 - 511.900
Block 20 512.000 - 537.500
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
E02 Additional Frequencies:
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
Block 30 768.000 - 793.500
Block 31 793.600 - 819.100
Block 32 819.200 - 844.700
Block 33 844.800 - 861.900
NOTE: It’s the user’s
responsibility to select
the approved frequencies
for the region where the
transmitter
is operating.
Frequency range: 256 frequencies in 100 kHz steps for one
25.5 MHz wide block
Channel Spacing: 100 kHz
Type of Modulation: FM
Frequency selection: Control panel mounted membrane switches
RF Power output: E01: 50 mW (nominal)
E02: 10 mW
Compatibility Modes: E01: Digital Hybrid Wireless® and IFB
E02: Digital Hybrid Wireless®, Mode 3, and IFB
Pilot tone: 25 to 32 kHz; 3 kHz deviation in hybrid mode
Frequency stability: ± 0.002%
Deviation: ± 50 kHz max. in hybrid mode
Spurious radiation: Compliant ETSI EN 300 422-1
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: 40 dB; panel mounted membrane switches
Modulation indicators: Dual bicolor LEDs indicate modulation of
-20, -10, 0, +10 dB referenced to
full modulation.
Controls: Control panel with LCD and four membrane
switches.
Low frequency roll-o: Adjustable from 35 to 150 Hz.
30 100 1kH
z1
0k 20k
+6
+3
0dB
-3
-6
-9
-12
Line in
Mic in 150 Hz
Roll-off
Mic in 35 Hz
Roll-off
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The low frequency
roll-o is adjustable - see graph above)
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
SmartNR No
Limiting
w/
Limiting
OFF 103.5 108.0
NORMAL 107.0 111.5
FULL 108.5 113.0
(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 gure 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.
Batteries: 1.5 Volt AA lithium or rechargeable
NiMH recommended
Battery Life: SMB: 2 hours (alkaline); 7.25 hours (lithium),
5 hours with 2500mAh NiMH
SMDB: 6 hours (alkaline); 14.5 hours
(lithium), 8.5 hours with 2500mAh NiMH
Weight: SMB: 2.7 oz.. (75.9 grams) with lithium battery
SMDB: 3.7 oz.. (105 grams) with lithium
batteries
Overall Dimensions: SMB: 2.3 x 1.8 x 0.64 inches
(not including microphone)
58 x 46 x 16 mm
(not including microphone)
SMDB: 2.3 x 2.4 x 0.64 inches
(not including microphone)
58 x 60 x 16 mm
(not including microphone)
Specications subject to change without notice.