Micro Bodypack Transmitter
WARNING: Moisture, including talent’s
sweat, will damage the transmitter.
Wrap the SSM in a plastic bag or other
protection to avoid damage.
Digital Hybrid Wireless®
US Patent 7,225,135
Fill in for your records:
Serial Number:
This guide is intended to assist with
initial setup and operation of your
Lectrosonics product.
Purchase Date:
For a detailed user manual, download the most current
version at:
19 October 2017
Controls and Functions
LCD Screen
Battery LED
Power Button
LCD Screen
Used to display the status of the selected function.
Power Button
Turns the unit on and off. A brief press turns power on in a Standby Mode to
make settings without interfering with other wireless systems in the vicinity.
AUDIO Button
The AUDIO button is used to adjust the audio output level and low frequency
roll-off. Each press of the button will toggle between the two settings.
Modulation LEDs
Provides a visual indication of the audio input signal level - either red or green
to indicate modulation levels.
FREQ Button
Used to set the operating frequency and toggle the LCD between the operating
frequency in MHz and a two-digit hexadecimal frequency code.
Up/Down Arrows
Used to adjust the selected function or parameter.
Battery LED
This LED glows green when the battery is good. The color changes to red
when there is only a few minutes of operation left. The LED will blink briefly,
just before the unit powers down.
Battery Charging
The transmitter operates from a 3.7 V rechargeable battery that will provide
about six hours of operation per charge. Battery life can be monitored from
current Lectrosonics receivers.
The factory supplied battery charger provides a folding NEMA 2-prong plug,
and will operate from 100-240 VAC sources. The LED glows red during charging and turns green when the battery is fully charged.
CAUTION: Use only the factory supplied battery and battery
Battery Installation
The battery compartment and door catch are designed for simple and quick
battery changes, yet prevent the door from being opened accidentally.
Press tabs inward
to release door
Insert battery
contact end first
Battery contacts
Press opposite
end of battery into
Operating Instructions
Power On
Ensure that a new or fully charged battery is
Initial Power On
Timer Screen
for several
Press and hold the Power Button
seconds until a counter on the LCD progresses
from 1 through 3.
Power Off
Holding the Power Button
in and waiting for the
completion of the countdown will turn the power
Initial Power Off
Timer Screen
When the counter reaches “0”, the unit turns off.
Note: If the AUDIO and FREQ buttons are
released before the end of the countdown, the unit will not turn off.
Standby Mode
Standby Screen
A brief press of the Power Button , releasing it
before the counter has reached 3, will turn the
unit on with the RF output turned off. The LCD
will display a reminder that the RF output of the
transmitter is turned off.
Initial Settings
Install a charged battery and go through the DOWN Button menu to set up
parameters for remote control, power restore and back light. Also go through
the UP Button menu to define the settings for compatibility mode, RF power
output, input configuration and the step size for frequency increments.
The setup menus are accessed by holding either the UP or DOWN arrow
while powering the unit on. Press the AUDIO button repeatedly to scroll
through the menu items and use the UP and DOWN arrows to select the
values and settings for each item.
NOTE: Some Lectrosonics receivers include an IR (infrared) port
to transfer settings from the receiver to the transmitter. Refer to the
section on IR (infrared) Sync for details.
DOWN Button Menu
Hold the DOWN button while powering up the unit. Then press the AUDIO
button repeatedly to scroll through the following settings. Use the UP and
DOWN arrows to select the available options under each setting.
• rc (remote control operation); selections: on, oFF
• PbAc (power-back-on after power loss); selections: 0 (stay turned off),
1 (turn back on)
• bL (back light duration); selections: 5 (minutes), 30 (seconds),
on (always on)
UP Button Menu
Hold the UP button while powering up the unit. Then press the AUDIO button repeatedly to scroll through and select the following settings below. Use
the UP and DOWN arrows to select the available options under each setting.
• CP (compatibility mode); press the UP and DOWN arrows to select one of
the following:
CP 400400 Series (Digital Hybrid) mode
CP 3 Mode 3 (contact the factory for details)
CP 200200 Series mode; receivers UCR200/201/205D/210/211
CP 100100 Series mode; UCR100 receiver
CP 7 Mode 7 (contact the factory for details)
CP 6 Mode 6 (contact the factory for details)
CP IFb IFB Series mode; IFBR1/1a receivers
• Pr (RF power output in mW); selections: 25, 50
• In (Input configuration); press the UP and DOWN arrows to select one of
the following:
In dYn no bias, 0 (300 ohm); for dynamic microphones
In CoS 4v bias, 0 (300 ohm); phase reversed; for Sanken COS11,
Lectrosonics M152 and similar mics
In b6 2v bias, 0 (300 ohm); for Countryman B6 and similar mics
In dPA 4v bias, Lo (4k ohms); use for DPA lavaliere and similar mics
In L In no bias, HI (100k ohms); use for line level input
In otH 4v bias, 0 (300 ohms); same as CoS but audio phase is not
reversed; for various mics
In SEt Press the AUDIO button for manual setup to select the
following parameters, then use the UP and DOWN
arrows for each item to set the values.
bIAS bias voltage on the input; selections 0, 2 or 4
rES input impedance; selections: 0 (300 ohms),
Lo (approx. 4k ohms) or HI (approx. 100k ohms)
AP audio polarity (aka “phase”); selections: P for positive,
n for negative (reversed)
NOTE: When you press AUDIO after setting the polarity (AP), the screen will leave
this submenu and move to the StP item below. To return to this submenu, press
AUDIO repeatedly and scroll through the menu again starting with CP at the top.
In SEn 4v bias, 0 (300 ohms); same as CoS but audio phase is not
reversed; for various mics, same as otH; listed for easy
In 152 4v bias, 0 (300 ohm); same as CoS but audio phase is not
reversed; for various microphones, same as otH; listed for
easy selection
• StP (frequency tuning step size in kHz) selections: 25 or 100 kHz
Set up Frequency and Gain
1)Use the receiver to find a clear frequency and set the transmitter to match.
2)Attach the microphone or signal source and adjust the input gain following
the steps on the next page.
Walk test the system through the area where it will be used to make sure
there are no dropouts.
Adjust 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 Green
-10 dB to +0 dB
Green Green
+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
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
1)With a charged battery in the transmitter, power the unit on in the standby
mode (see previous section Powering On in Standby Mode).
2)Prepare the signal source. Position a microphone the way it will be used in
actual operation and have the user speak or sing at the loudest level that
occur during use, or set the output level of the instrument or audio device to
the maximum level that will be used.
3)Press and hold the AUDIO button with Aud and a numeral on the display
(e.g. Aud 22).
4)Use the and arrow buttons to adjust the gain until the –10 dB glows
green and the –20 dB LED starts to flicker red during the loudest peaks in
the audio.
5)Once the audio gain has been set, the signal can be sent through the
sound system for overall level adjustments, monitor settings, etc.
6)If the audio output level of the receiver is too high or low, use only the controls on the receiver to make adjustments. Unless the microphone or its position changes, or a different instrument is being used, leave the transmitter
gain adjustment set according to these instructions. Use the audio output
level control on the receiver to make adjustments for the desired level being
delivered to the connected mixer, recorder, etc.
IR (infrared) Sync
An IR (infrared) link between an associated receiver and the transmitter can
be used to shorten setup time and ensure that the correct settings in the
transmitter are made. The dome on the side panel of the transmitter is the port
used for the IR link. The receiver is normally used to identify a clear operating
frequency. Once step size, frequency and compatibility mode are set in the
receiver, the settings can be sent to the transmitter via this IR link.
IR port
Place the transmitter close to the IR enabled receiver with the ports facing
each other within a foot or two apart. Send the settings with the trigger on the
receiver. If the settings are successfully transferred, a confirmation message
will appear on the transmitter LCD.
NOTE: If a mismatch exists between the receiver and transmitter, an
error message will appear on the transmitter LCD stating what the
problem is.
Removable Belt Clip
The belt clip may be removed by sliding it off the retaining tabs on the battery
door. Tilt the clip at angle to remove it.
When mounting the belt clip onto the battery door, carefully align the openings with the retaining tabs on the door and press it into place. If the holes
and tabs are not precisely aligned, the door may not close and latch properly.
Align the openings
and tabs precisely.
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