Super-Minature Belt Pack Transmitters
Thank you for selecting a Lectrosonics SM Series
ultra-miniature transmitter. The unique design provides
specialized features for professional applications:
•
Outstanding
RF
operating
range
•
Superb
audio
quality
•
Ultra-lightweight,
corrosion
resistant
housing
•
Water
resistant
seals
for
use
in
damp
environments
•
Programmable
compatibility
modes
for
use
with
a
wide variety of different 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 excellent
operating range, spectral efficiency and long battery life
as analog systems, plus the excellent audio fidelity typi
cal of pure digital systems.
The SMDa Series transmitters use a standard Lec
trosonics 5-pin type input jack for use with electret lava
liere mics, dynamic mics, or line level signals. A water
resistant control panel with LCD, membrane switches
and multi-color LEDs make input gain adjustments
and frequency and compatibility mode selection quick
and accurate, without having to view the receiver. The
battery compartment accepts AA lithium or recharge
able batteries. The housing is machined from a solid
aluminum block to provide an extremely lightweight and
rugged package. A special non-corrosive finish resists
salt water exposure and perspiration in extreme envi
ronments.
Table of Contents
General Technical Description ...............................................4
Wideband Design...................................................................4
Servo Input.............................................................................4
Digital Hybrid Wireless
®
Technology ......................................4
No Pre-Emphasis/De-Emphasis ............................................4
Low Frequency Roll-Off .........................................................5
Input Limiter ...........................................................................5
Signal Encoding and Pilot Tone .............................................5
Microprocessor, PLL and VCO Circuits..................................5
Compatibility Modes...............................................................5
Wide-Band Deviation .............................................................5
Battery Options and Operating Time .....................................5
Frequency Blocks...................................................................5
Circulator/Isolator...................................................................5
Controls and Functions ..........................................................6
LCD Screen ...........................................................................6
Power LED .............................................................................6
Audio Input Jack.....................................................................6
Battery Compartment and Thumb Screw...............................6
Modulation LEDs....................................................................6
Audio Button ..........................................................................6
Freq Button ............................................................................6
Up/Down Arrows ....................................................................6
Antenna..................................................................................6
Setup with the LCD..................................................................7
Audio Screen .........................................................................7
Frequency Screen..................................................................7
Compatibility Mode Screen ....................................................7
Turning the Power On ............................................................7
Turning the Power Off ............................................................7
Entering the Standby Mode ...................................................7
Battery Installation ..................................................................8
Lock/Unlock Screen ...............................................................8
Remote Control Operation .....................................................8
Operating Instructions............................................................9
Power Up and Boot Sequence...............................................9
Power Down...........................................................................9
Standby Mode........................................................................9
Selecting the Compatibility Mode...........................................9
Setting Transmitter Operating Frequency.............................10
Adjusting the Low Frequency Roll-off ..................................10
Attaching a Microphone and Adjusting Gain........................10
Locking or Unlocking the Control Panel ...............................11
Attaching and Removing the Microphone ............................11
5-Pin Input Jack Wiring .........................................................12
Installing the Connector: ......................................................12
Microphone Cable Termination
for Non-Lectrosonics Microphones..............................13
Microphone RF Bypassing...................................................14
Line Level Signals................................................................14
Wiring Hookups for Different Sources ................................15
Compatible Wiring for Servo Bias and Early Inputs .............15
Simple Wiring - Servo Bias Inputs Only ...............................15
RM Remote Control Operating Instructions .......................16
RM Front Panel Controls......................................................16
Powering the RM on and off.................................................16
Principles of Operation.........................................................16
RM Pages ............................................................................16
Operating Notes...................................................................17
RM Quick Reference............................................................17
Troubleshooting.....................................................................18
RM Troubleshooting .............................................................19
Included Accessories............................................................20
Optional Accessories............................................................20
Specifications and Features.................................................21
Service and Repair ................................................................22
Returning Units for Repair ...................................................22
Rio Rancho, NM
3