INSTRUCTION MANUAL SMV Series Super Miniature Variable Power Transmitters With Digital Hybrid Wireless® Technology US Patent 7,225,135 SMQV SMV RM RM2 Dual Battery Model Single Battery Model Remote Control Remote Control Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.
SMV Series Introduction The SM Series variable power transmitters are the product of many years of engineering and experience in professional audio markets.
Super-Minature Belt Pack Transmitter Table of Contents Introduction..............................................................................................................................................................................................2 General Technical Description...............................................................................................................................................................4 Controls and Functions........................................
SMV Series General Technical Description Servo Bias Input No Pre-Emphasis/De-Emphasis The voltage and current requirements of the wide variety of electret microphones used in professional applications 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.
Super-Minature Belt Pack Transmitter Signal Encoding and Pilot Tone In addition to controlling the limiter, the DSP also encodes 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 reliable method of keeping a receiver output muted (audio mute) even in the presence of significant interference.
SMV Series Controls and Functions Battery Compartment and Thumb Screw Modulation LEDs LCD Battery Compartment Cover Plate The large knurled thumbscrew is used to release or secure the Battery Compartment Cover Plate. UP Arrow Antenna Jack 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.
Super-Minature Belt Pack Transmitter Battery Installation We recommend using lithium batteries for longest life. Refer to the battery life listings in the specifications. Batteries are inserted (+) end first on both single and double battery models. To install new batteries: 1. Turn the Battery Cover Plate Thumbscrew counterclockwise a few turns until the door will rotate. If you continue to rotate the thumbscrew, the door will separate from the transmitter. 2. Insert the new batteries into the housing.
SMV Series 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. LCD Backlight Settings The LCD backlight can be set to turn off after either 5 minutes or 30 seconds or stay on continuously. Hold the UP arrow in while powering up the unit to enter the setup screen.
Super-Minature Belt Pack Transmitter Audio Screen The Audio screen is used to adjust input gain from 0 to +44 dB, and the low frequency roll-off from 35 to 150 Hz. Repeatedly pressing 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.
SMV Series Setting Transmitter Operating Frequency The frequency can be displayed either in MHz or as a two-digit hexadecimal number and can be set in Frequency displayed the Standby Mode or when in MHz the transmitter is powered up.
Super-Minature Belt Pack Transmitter 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.
SMV Series Microphone RF Bypassing Line Level Signals 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.
Super-Minature Belt Pack Transmitter Microphone Cable Termination for Non-Lectrosonics Microphones TA5F Connector Assembly Mic Cord Stripping Instructions 1 4 5 2 3 VIEW FROM SOLDER SIDE OF PINS 0.15" 0.3" 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.
SMV Series Wiring Hookups for Different Sources In addition to the microphone and line level wiring hookups 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. A lot of information regarding microphone wiring is also available in the FAQ section of the web site at: http://www.lectrosonics.
Super-Minature Belt Pack Transmitter 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 Simply hold the cloth around the threads and turn the thumbscrew. Move to a new spot on the cloth and do it again.
SMV Series RM Remote Control The RM unit gives you remote control of SM Series transmitters using an audible tone delivered to the microphone. The panel layout is the same as the transmitters. Simply set the desired value or mode on the LCD, then press the send button to set the transmitter to the same setting or mode. The setup screens are accessed with the AUDIO and FREQ buttons. Once on the desired screen, the value is adjusted with the UP and DOWN arrow buttons.
Super-Minature Belt Pack Transmitter Operating Notes • The sensitivity to the remote control varies with the transmitter’s audio level setting and the microphone used, but it is always possible to make it work with a sufficiently loud remote signal at close range. • If the transmitter is configured to respond to the remote control, it will do so even if the buttons are locked. • When the transmitter is asleep, it can only be awakened by the remote control, or by removing and reinserting the battery.
SMV Series Straight Whip Antennas 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. 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).
Super-Minature Belt Pack Transmitter Accessories for single battery models: PSM Leather pouch with integrated belt clip SMBCUPSL Spring-loaded machined aluminum clip 35923 Thermal insulated pad installed on SMV Place thermal insulation pad on back of unit, as pictured.
SMV Series Accessories for Both Models SMBATELIM External power adapter (battery eliminator) for all SM Series transmitters. 6 to 36 volt external sources. Handles up to 1 amp consumption. Protected against shorts and reverse polarity. SMKITTA5 Microphone connector kit with watertight sleeve for all SM Series transmitters. 20 LECTROSONICS, INC.
Super-Minature Belt Pack Transmitter Troubleshooting 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.
SMV Series SYMPTOM HISS AND NOISE -- AUDIBLE DROPOUTS 1) 2) 3) 4) 5) POSSIBLE CAUSE Transmitter gain (audio level) far too low. Receiver antenna missing or obstructed. Transmitter antenna broken or missing. Operating range too great. Signal interference. Turn off transmitter. If receiver’s signal strength indicator does not drop to nearly zero, this indicates an interfering signal may be the problem. Try a different operating frequency.
Super-Minature Belt Pack Transmitter Specifications 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 - 607.900 614.100 - 614.
SMV Series 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.
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.
