Lectrosonics SSMA1A User Manual
SSM
Micro Bodypack Transmitter
INSTRUCTION MANUAL
Quick Start Steps
1) Install a good battery and turn power on (see pages 5
and 8).
2) Set the compatibility mode to match the receiver (see
page 9).
3) Connect the signal source and adjust input gain for
optimum modulation level (see page 10).
4) Set Step Size and frequency to match receiver (see
pages 8 and 9). Also refer to the receiver manual for
the RF scanning procedure to find a clear operating
frequency.
5) Turn on the receiver and verify that solid RF and
audio signals are present (see receiver manual).
WARNING: Moisture, including talent’s sweat,
will damage the transmitter. Wrap the SSM
in a plastic bag or other protection to avoid
damage.
Fill in for your records:
Serial Number:
Purchase Date:
Rio Rancho, NM, USA
www.lectrosonics.com
SSM
2
LECTROSONICS, INC.
Micro Body Pack Transmitter
Table of Contents
Quick Start Steps .................................................................................................................................................................................. 1
About Digital Hybrid Wireless
Battery Charging ....................................................................................................................................................................................5
Battery Installation .................................................................................................................................................................................5
Controls and Functions .........................................................................................................................................................................6
Modulation LEDs ...................................................................................................................................................................................6
LCD Screen ..........................................................................................................................................................................................6
BATT LED .............................................................................................................................................................................................6
AUDIO Button .......................................................................................................................................................................................6
FREQ Button .........................................................................................................................................................................................6
Power Button ......................................................................................................................................................................................... 6
UP and DOWN Arrow Buttons ..............................................................................................................................................................6
Turning LEDs ON and OFF ...................................................................................................................................................................6
See Operating Instructions and Setup Screens for complete information.............................................................................................6
Connectors and USB Port .....................................................................................................................................................................7
Attaching and Removing the Microphone ............................................................................................................................................7
Operating Instructions ...........................................................................................................................................................................8
Powering On in Operating Mode ........................................................................................................................................................... 8
Powering On in Standby Mode .............................................................................................................................................................8
Powering Off .........................................................................................................................................................................................8
Setup Screens ......................................................................................................................................................................................8
Screens Used in Normal Operation ......................................................................................................................................................8
Block 470/19 Frequency Overlap .......................................................................................................................................................... 8
Call the factory if you have questions about this issue. ........................................................................................................................8
Setup Steps ..........................................................................................................................................................................................9
Locking the Controls ..............................................................................................................................................................................9
Adjusting the Input Gain ........................................................................................................................................................................9
Setup Screens ....................................................................................................................................................................................10
DOWN Button Menu ...........................................................................................................................................................................10
UP Button Menu ..................................................................................................................................................................................10
Microphone Wiring ...............................................................................................................................................................................11
Line Input Wiring and Use ...................................................................................................................................................................11
IR (infrared) Sync ..................................................................................................................................................................................12
Removable Belt Clips ...........................................................................................................................................................................12
Remote Control .....................................................................................................................................................................................12
LectroRM ...............................................................................................................................................................................................13
Accessories ..........................................................................................................................................................................................14
Firmware Update ..................................................................................................................................................................................15
Specifications ......................................................................................................................................................................................17
Service and Repair ...............................................................................................................................................................................18
Returning Units for Repair ..................................................................................................................................................................18
® .................................................................................................................................................................................................................................................................................4
Rio Rancho, NM
3
SSM
About Digital Hybrid Wireless
®
US Patent 7,225,135
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, however, it is often at the cost of one
or more issues regarding 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 weakened signal conditions; however, the Digital Hybrid Wireless system
handles this situation elegantly with barely audible
audio artifacts as the receiver approaches its squelch
threshold.
In contrast, a purely digital system tends to drop the
audio suddenly during brief dropouts and weak signal
conditions. The Digital Hybrid Wireless system simply
encodes the signal to use a noisy channel as efficiently
and robustly as possible, yielding audio performance
that rivals that of purely digital systems, without the
power, noise and bandwidth problems inherent in digital
transmission. Because it uses an analog FM link, Digital
Hybrid Wireless enjoys all the benefits of conventional
FM wireless systems, such as excellent range, efficient
use of RF spectrum, and long battery life.
4
LECTROSONICS, INC.
Micro Body Pack Transmitter
Battery Installation
The battery compartment and door catch are designed
for simple and quick battery changes, yet prevent the
door from being opened accidentally.
Squeeze tabs inward
to release door catch
Battery contacts
Battery Charging
The transmitter operates from a 3.6 V rechargeable
battery that will provide about six hours of operation
per charge. Battery life can be monitored from the timer
function built into current Lectrosonics receivers.
The factory supplied battery charger kit provides a
folding NEMA 2-prong plug on the charger, and will
operate from 100-240 VAC sources. The LED glows red
during charging and turns green when the battery is
fully charged. The kit includes a Euro plug adapter and
vehicle auxiliary power adapter cord.
Battery charger kit
P/N 40107
Insert battery
contact end first
Press opposite end of
battery into compartment
Rio Rancho, NM
CAUTION: Use only the factory supplied
battery and battery charger.
5
SSM
Controls and Functions
Modulation
LEDs
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 flash red during use. If the LEDs never flash 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 Off Off
-20 dB to -10 dB Green Off
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 db Red Red
LCD Screen
The LCD is a numeric-type Liquid Crystal Display with
screens for adjusting output power, frequency, audio
level, low frequency audio roll-off and various modes
and options. The transmitter can be powered up with or
without the RF output turned on. A brief press on the
power button turns the unit on in a Standby Mode with
the output turned off to allow adjustments to be made
without interfering with other wireless systems in the
vicinity.
WARNING: Moisture, including talent’s sweat,
will damage the transmitter. Wrap the SSM in
a plastic baggie or other protection to avoid
damage.
BATT LED
Power Button
BATT 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.
The exact point at which the LED turns red will vary
with battery brand and condition, temperature and current drain. The LED is intended to simply catch your
attention, not to be an exact indicator of remaining time.
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.
FREQ Button
The FREQ Button displays the selected operating
frequency and toggles the LCD between displaying
the actual operating frequency in MHz and a two-digit
hexadecimal number that corresponds to the equivalent
Lectrosonics Frequency Switch Setting.
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. Pressing and
holding the button until a counter on the LCD completes
a sequence turns the power on with the RF output
turned on. Pressing and holding for the duration of a
countdown turns the unit off.
UP and DOWN Arrow Buttons
The Up and Down arrow buttons are used to select the
values on the various setup screens and to lock out the
control panel.
Turning LEDs ON and OFF
These arrow keys also turn the LEDs on and off. With
no other button pressed, the UP arrow turns the LEDs
on and the DOWN arrow turns them off. When the LEDs
turn red, the LCD will display a reminder every few
seconds.
See Operating Instructions and Setup
Screens for complete information.
6
LECTROSONICS, INC.
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