LMb Manual - Lectrosonics.com
Contents
1. Power Button Move switch toward the white dot to turn it on NOTE The battery timer feature in many Lectrosonics receivers is very helpful in measuring battery runtime when using rechargeable batteries Refer to the receiver instructions for details on using the timer Powering On in Operating Mode Press and hold the Power Button for several seconds until a counter on the LCD progresses from 1 through 3 followed by a display of the model firmware version frequency block and compatibility mode When you release the button the unit will be operation al with the RF output turned on and the Main Window displayed Only the second and third screens will ap pear when the programmable function switch is used to turn on the power LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter Powering On in Standby Mode 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 In this Standby Mode the menus can be browsed to make settings and adjustments with out the risk of interfering with other wireless systems nearby RF indicator blinks Release Power Button before the counter reaches 3 to enter standby mode After settings and adjustments are made press the power button again to turn the unit off NOTE Also see the section entitled Power Menu for the AutoOn feature Powering Off From any scr2. Talkback function is enabled but not active When the programmable switch is turned on the talk back icon appearance will change and the power func tion LED will glow blue The TB icon will change when Talkback is active Top Panel LED will glow blue when Talkback is active LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter Selecting the Compatibility Compat Mode When used with a Lectrosonics Digital Hybrid Wireless receiver the best audio quality will be achieved with the system set to the Hybrid compatibility mode Use the UP and DOWN arrows to select the desired mode then press the BACK button twice to return to the Main Window Compatibility modes are as follows Receiver Models LCD menu item e 100 Series 100 Mode e 200 Series 200 Mode e Mode 3 Mode 3 e Digital Hybrid Wireless Hybrid e IFB Series IFB Mode e Mode 6 Mode 6 e Mode 7 Mode 7 100 Series works with Lectrosonics UCR100 analog receivers 200 Series works with Lectrosonics earlier UCR201 205 210D 211 and UCR195 analog receivers with dual band compandors Mode 3 works with certain non Lectrosonics models Digital Hybrid Wireless works with all Lectrosonics Digital Hybrid receivers The receiver must also be set to the Digital Hybrid compatibility mode IFB Series works with Lectrosonics IFB R1 R1a analog receivers Mode 6 works with certain non Lectrosonics models Mode 7 works with cert
3. and MI39AST instrument cable assem blies allow an optimum match between musical instru ment pickups and Lectrosonics transmitters with 5 pin input connectors The cables are wired to provide an extended low fre quency response with a roll off at 35 Hz Note This cable is prewired and cannot be field modified The cable is available in two configurations MI39ARA right angle 1 4 plug and MI39AST straight 1 4 plug SLEEVE suet sheo PN ZN CI o Preamp PWR 060 O 2 O AUDIO 4 5 1 TIP AUDIO 3 30 02 1 4 PLUG TA5F Preamp is located inside os PLUG the connector shell VS LMb Accessories P N 26526 M152 5P MI33PRA MI33PST MI39ARA MI39AST MC35 MC41 P N 55008 16 Wire belt clip Lavaliere microphone omnidirectional Instrument cable passive type for use with very high output pickups right angle 1 4 plug Instrument cable passive type for us with very high output pickups straight 1 4 plug Instrument cable active type for use with most instrument pickups right angle 1 4 plug Instrument cable active type for use with most instrument pickups straight 1 4 plug Line level adapter cable XLR F to TA5F 37 length Dynamic mic level adapter cable XLR F to TA5F 37 length AA battery caddy 4 pack blue LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter Troubleshooting Symptom Tra
4. that you ship Of course we insure the equipment when we ship it back to you Lectrosonics USA Mailing address Lectrosonics Inc PO Box 15900 Rio Rancho NM 87174 USA Web www lectrosonics com Lectrosonics Canada Mailing Address 720 Spadina Avenue Suite 600 Toronto Ontario M5S 2T9 Rio Rancho NM Shipping address Lectrosonics Inc 581 Laser Rd Rio Rancho NM 87124 USA E mail sales lectrosonics com Telephone 416 596 2202 877 753 2876 Toll free 877 7LECTRO 416 596 6648 Fax Telephone 505 892 4501 800 821 1121 Toll free 505 892 6243 Fax E mail Sales colinb lectrosonics com Service joeb lectrosonics com 19 NNUU 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 7 Z Z NN Should any defect develop Lectrosonics Inc will at our option repair or replace any defective parts without charge for either parts or labor If Lectrosonics Inc cannot correct the defect in your equipment it will be replaced at no charge with a similar new item Lectrosonics Inc will pay for the cost of returning your equipment to you This warranty applies only to item
5. 0 Use the and arrow buttons to select the desired function or disable the switch perating mode Battery status Frequency hex setting Programmable Frequency MHz switch function Audio level When the frequency step size is set to 25 kHz the hex number is smaller and may include a fraction Fraction 1 4 025 MHz Note that the frequency has 1 2 050 MHz increased by 25 3 4 075 MHz kHz from the upper example Changing the step size never changes the frequency It only changes the way the user interface works If the frequency is set to a fractional increment between even 100 kHz steps and the step size is changed to 100 kHz the hex code will be replaced by two asterisks on the main screen and the frequency screen Frequency set to fractional 25 kHz step but step size changed to 100 kHz If the programmable switch function is set for Mute the Main Window will indicate that the function is enabled Mute function enabled but not active When the switch is turned on the mute icon appear ance will change the word MUTE will blink at the bot tom of the display and the power function LED will blink gZ fa D Main Window will blink the word MUTE when the audio is muted Top Panel LED will blink blue when the audio is muted If the programmable switch function is set for Talkback the Main Window will indicate that the function is en abled but not active
6. 4 dB digital control e Dual bicolor LEDs indicate modulation of 20 10 0 and 10 dB referenced to full modulation LCD bar graph e Top panel toggle switch programmable as power mute talkback or none off function Side panel membrane switches with LCD interface for power on off and all setup and configuration controls Switchcraft 5 pin locking TA5F Galvanized steel flexible wire Two AA alkaline lithium NiMH rechargeable e Alkaline 4 5 hours e Duracell Quantum 7 hours e Eneloop 2400 mAH NiMH 8 hours new batteries fully charged 5 8 ounces 141 grams including lithium AA batteries and wire belt clip 3 2 x 2 4 x 9 in 81 x 61 x 20 mm 180KF3E handling of transients using variable attack and release time constants Once activated the limiter compresses 30 dB of transmitter input range into 4 5 dB of receiver output range thus reducing the measured figure for SNR without limiting by 4 5 dB Specifications subject to change without notice For body worn operation this transmitter model has been tested and meets the FCC RF exposure guidelines when used with the Lectrosonics accessories supplied or designated for this product Use of other accessories may not ensure compliance with FCC RF exposure guidelines Contact Lectrosonics if you have any questions or need more information about RF exposure using this product This device complies with FCC radiation exposure limits as set forth for an uncontro
7. LMb INSTRUCTION MANUAL Synthesized UHF Belt Pack Transmitter Serial Number Purchase Date Featuring Digital Hybrid Wireless Technology US Patent 7 225 135 Quick Start Steps 1 Install good batteries and turn power on see pages 5 and 6 2 Set compatibility mode to match the receiver see page 9 3 Connect signal source and adjust input gain for optimum modulation level see page 9 4 Set StepSize and frequency to match receiver see page 10 Also see receiver manual for scanning procedure 5 Turn on the receiver and verify RF and audio sig nals are present See receiver manual LECTROSONICS a A Rio Rancho NM USA www lectrosonics com LMb Table of Contents INTFOCUCTION ccseseesseeeeessteneeeeenens About Digital Hybrid Wireless Frequency Agility Wide Band Deviation Servo Bias Input and Wiring LMb Block Diagram DSP controlled Input Limiter ec eee eeeeeeeeeeeeeeeeeeeeees No Pre Emphasis De Emphasis ccceseeseeteeeeeeetenees Pilot Tone Squelch ceeeeee Battery Installation Belt ClipS j s 23 ccccesceceecccncessessssateceseces Operating Instructions 006 Battery Status LED Indicators Powering On in Operating Mode Powering On in Standby Mode Powering Off ecceeeceeeeeeeeeeseees Navigating Menus eecceeeseeeeeseeeteneeeeeeeeeeeneeteneeereneeees Locking Unlocking Cha
8. T NEGATIVE BIAS 2 WIRE ELECTRET SHIELD 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 11 4 VOLT POSITIVE BIAS 3 WIRE ELECTRET SHIELD 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 LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter 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 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 sig nal from affecting the capsule even though the trans mitter input circuitry is already RF bypassed If the mic is wired as directed and you are having dif ficulty with squealing high noise or poor frequency response FF is likely to be the cause The best RF protection is accomplished by installing RF bypass capacitors at
9. ad protection A dual release envelope makes the limiter acoustically transparent while maintaining low distortion It can be thought of as two limiters in series connected as a fast attack and release limiter followed by a slow attack and release limiter The limiter recovers quickly from brief transients so that its action is hidden from the listener but recovers slowly from sustained high levels to keep audio distortion low and preserve short term dynamic changes in the audio No Pre Emphasis De Emphasis Because the signal to noise ratio of the Digital Hybrid Wireless system is so high there is no need for con ventional pre emphasis HF boost in the transmitter and de emphasis HF roll off in the receiver Thus the potential distortion problems associated with pre em phasis and de emphasis are eliminated LMb Block Diagram 5V Servo Bias Bias Voltage Supply 0 2 0r 4V A D Converter 11001001 Shunt Limiter Limiter Control m2 Bicolor DSP Clock Pilot Tone Squelch The squelch system in a receiver is a method of muting the audio when the RF signal conditions are too poor to produce usable audio While not all squelch systems work the same way the goal is always the same to discard noise and unusable audio The Digital Hybrid Wireless system employs a DSP generated supersonic tone pilot tone using it as a kind of signature so the receiver can mute even strong signals that aren t
10. agrams 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 differs 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 Servo Bias a fF oO MD lt a Pin 4toPini 0V ene Rn Pin 4 Open 2V lt 5V SOURCE Pin 4 to Pin2 4V MIC 200 Ohm BOuF lt o VOLTAGE SELECTS e To Audio Amplifier LINE IN gt To Limiter Control me BE 3 3uF 10k T amp N Backshell with strain relief Cable clamp Insulator Insert TA5F Latchlock oo Installing the Connector 1 If necessary remove the old connector from the microphone cable 2 Slide the dust boot onto microphone cable with the large end facing the connector 3 If necessary slide the 1 8 inch black shrink tubing onto the mircrophone cable This tubing is needed for some smaller diameter cables to ensure there is a snug fit in the dust boot 4 Slide the backshell over the cable as shown above Slide the insulator over the cable before soldering the w
11. ain non Lectrosonics models Contact the factory for details of these modes Connecting the Signal Source Microphones line level audio sources and instruments can be used with the transmitter Refer to the section entitled Wiring Hookups for Different Sources for details on the correct wiring for microphones to take full advantage of the Servo Bias circuitry Rio Rancho NM Adjusting the Input Gain The two bicolor Modulation LEDs on the control panel and keypad 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 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 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 point It is best to go through the following procedure with the transmitter in the standby mode so that no audio will en ter the sound system or recorder during adjustment 1 With fresh batteries in the transmitter power the unit on in the standby mode see previous section Powering On in Standby Mode 2 Navigate to the Gain setup screen 3 Prepare the signal source Position a microphone the way it will be used in actual operation and ha
12. d staffed to quickly repair your equipment In warranty repairs are made at no charge in accordance with the terms of the warranty Out of warranty repairs are charged at a modest flat rate plus parts and shipping Since it takes almost as much time and effort to determine what is wrong as it does to make the repair there is a charge for an exact quotation We will be happy to quote approximate charges by phone for out of warranty repairs Returning Units for Repair For timely service please follow the steps below A DO NOT return equipment to the factory for repair without first contacting us by email or by phone We need to know the nature of the problem the model number and the serial number of the equipment We also need a phone number where you can be reached 8 A M to 4 P M U S Mountain Standard Time B After receiving your request we will issue you a return authorization number R A This number will help speed your repair through our receiving and repair departments The return authorization number must be clearly shown on the outside of the shipping container C Pack the equipment carefully and ship to us shipping costs prepaid If necessary we can provide you with the proper packing materials UPS is usually the best way to ship the units Heavy units should be double boxed for safe transport D We also strongly recommend that you insure the equipment since we cannot be responsible for loss of or dam age to equipment
13. dvanced DSP controlled limiter is used to prevent signal peaks from exceeding the maximum allowed bandwidth but not cause distortion The result of all this is that the audio quality is outstand ing rivaling a hard wired microphone The system deliv ers a very wide dynamic range and can handle loud signal peaks without distortion Servo Bias Input and Wiring The LMb input preamp is a unique design that delivers audible improvements over conventional transmitter inputs The transmitters are easier to use and much harder to overload It is not necessary to introduce pads on some mics to prevent overload of the input stage divide the bias voltage down for some low voltage mics or reduce the limiter range at minimum gain settings Two different microphone wiring schemes are available to simplify and standardize the configuration Simpli fied 2 wire and 3 wire configurations provide several arrangements designed for use only with servo bias inputs to take full advantage of the preamp circuitry Other wiring schemes are compatible with Servo Bias and conventional inputs A line level input wiring provides an extended frequency response with an LF roll off at 35 Hz for use with instru ments and line level signal sources LMb DSP controlled Input Limiter The transmitter employs a digitally controlled analog audio limiter prior to the analog to digital converter The limiter has a range greater than 30 dB for excellent overlo
14. e with output power remain ing constant over the life of the battery The input ampli fier uses an ultra low noise op amp for quiet operation Input gain is adjustable over a 44 dB range with a DSP controlled dual envelope input limiter to cleanly handle signal peaks over 30 dB above full modulation About Digital Hybrid Wireless 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 informa tion in digital form at the cost of some combination of power bandwidth operating range and resistance to interference The Lectrosonics Digital Hybrid Wireless system over comes 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 informa tion 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 in creased operating range and weak signal conditions however the Digital Hybrid Wireles system handles t
15. eeeeeeenneees 15 Line Level Signals eeceeceeseeeeeeeeeeeteeeeeeeeeeeteeeeeaeetaas 15 Wiring Diagram for MI39A Instrument Cable 008 15 ACCESSOTIES nnnanasnnannannnnnnnnnannnannnnnannanenannannnnnnanennnnannannnannanannnn 16 Troubleshooting sssi vege ses ceesevestecedestcctescdivisieedecetesevsseseects 17 Specifications and Features ccssecesseecessseeeseeeeees 18 Service and Repair cc sccsecesescssecceneeeseeeeseeseeresteesneeess 19 Returning Units for Repair 0 00 eeeseeeeseeeeeeneeeeeneeereneeees 19 Consumer Alert for US Users FCC Order DA 10 92 Most users do not need a license to operate this wireless microphone system Nevertheless operating this micro phone system without a license is subject to certain restrictions the system may not cause harmful interference it must operate at a low power level not in excess of 50 milliwatts and it has no protection from interference received from any other device Purchasers should also be aware that the FCC is currently evaluating use of wireless mi crophone systems and these rules are subject to change For more information call the FCC at 1 888 CALL FCC TTY 1 888 TELL FCC or visit the FCC s wireless microphone website at www fcc gov cgb wirelessmicrophones To operate wireless microphone systems at power greater than 50mW you must qualify as a Part 74 user and be licensed If you qualify and wish to apply for a license go to http Awww
16. een power can be turned off by selecting Pwr Off in the power menu or holding the Power Button in and waiting for the countdown EXCEPT if the top panel switch is configured for this function If the power button is released or the top panel switch is turned back on again before the countdown is completed the unit will remain turned on and the LCD will return to the same screen or menu that was displayed previously NOTE When the top panel switch is configured as a power switch that is the only way to turn the unit off Navigating Menus The LCD and keypad interface makes it easy to browse the menus and make the selections for the setup you need When the unit is powered up in either the oper ating or the standby mode press MENU SEL on the keypad to enter a menu structure on the LCD Use the and arrow buttons to select the menu item Then press the MENU SEL button to enter the menu a The prompt in the upper right corner may display one or both arrows depending upon what adjustment can be made If the changes are locked a small padlock symbol will appear Rio Rancho NM Locking Unlocking Changes to Settings Changes to the settings can be locked s L A small padlock symbol will appear on adjustment screens when changes have been locked When changes are locked several controls and actions can still be used e Settings can still be unlocked e Menus can still be browsed e Progra
17. etup screen for frequency selection offers several ways to browse the available frequencies Press MENU AD SEL to select one of four GD fields to make G99 600 adjustments Each field will step through the available frequencies in a different increment The increments are also different in the 25 kHz mode from the 100 kHz mode These two fields step in 25 kHz increments when the step size is 25 kHz and 100 kHz increments when the step size is 100 kHz These two fields always step in the same increments 1 block steps 1 MHz steps 10 A fraction will appear next to the hex code in the setup screen and in the main window when the frequency ends in 025 050 or 075 MHZ Fraction appears next to hex code in 25 kHz mode gt Selecting Frequency Using Two Buttons Hold the MENU SEL button in then use the and arrow buttons for alternate increments 100 kHz Mode 1 block steps 1 6 MHz steps to nearest 100 kHz channel 10 MHz steps 100 kHz steps to next 100 kHz channel 25 kHz Mode 1 block steps 1 6 MHz steps 10 MHz steps 100 kHz steps Helpful Features on Receivers To aid in finding clear frequencies several Lectrosonics receivers offer a SmartTune feature that scans the tun ing range of the receiver and displays a graphical report that shows where RF signals are present at different levels and areas where there is little or no RF energy present The software then automat
18. fcc gov Forms Form601 601 html 2 LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter Introduction The design of the LMb transmitter delivers the ad vanced technology and features of Digital Hybrid Wire less in a Lectrosonics belt pack transmitter at a modest cost Digital Hybrid Wireless combines a 24 bit digital audio chain with an analog FM radio link to eliminate a compandor and its artifacts yet preserve the extended operating range and noise rejection of the finest analog wireless systems DSP compatibility modes allow the LMb to also be used with a variety of analog receivers by emulating the compandors found in earlier Lectro sonics analog wireless and IFB receivers and certain receivers from other manufacturers contact the factory for details The housing is a rugged machined aluminum package with removable stainless steel wire belt clip The input jack is a standard Lectrosonics 5 pin type for use with electret lavaliere mics dynamic mics musical instru ment pickups and line level signals The LEDs on the top panel allow quick and accurate level settings without having to view the receiver The unit is powered by two AA batteries The antenna is a super rugged perma nently attached 1 4 wavelength design made of flexible galvanized steel cable The switching power supplies in the LMb provide con stant voltages to the transmitter circuits from the begin ning to the end of battery lif
19. ff and on with a menu item on the LCD to switch from the standby mode to the operating mode Rio Rancho NM Selecting Battery Type The voltage drop over the life of different batteries var ies by type and brand Be sure to set the correct battery type for accurate indications and warnings The menu offers alkaline or lithium types If you are using rechargeable batteries it is better to use the timer function on the receiver to monitor the battery life rather than the indicators on the transmitter Rechargeable batteries maintain a fairly constant volt age across the operating time on each charge and stop working abruptly so you will have little or no warning as they reach the end of operation The timer is available on all Lectrosonics Digital Hybrid Wireless receivers Restoring Default Settings This is used to restore the factory settings IR infrared Sync The opening on the side panel is an IR port for quick setup using a receiver with this capability The transfer is initiated with a switch on the receiver IR Port The receiver can transfer the settings for Frequency Step Size and Compatibility mode to the transmitter via the IR ports When the settings are successfully transferred OK will appear on the transmitter LCD If a mismatch exists an error message will appear on the transmitter LCD indicating the nature of the problem 14 LMb 5 Pin Input Jack Wiring The wiring di
20. from the appropriate transmitter The pilot tone also helps to ensure that the receiver is quiet when the transmitter is turned on and off 256 different pilot tones provide reliable operation in multi channel wireless systems A different tone is generated every 100 kHz across the tuning range of the system so that a tone is not repeated until it is 25 6 MHz above or below the previous one D A Converter EN Audio and A 11001001 Digital Signal Processor SPI Micro Clock Modulation Oscillator OO Oo Keypad LEDs A PLL Ref Phase Locked Loop Control Encoded Pilot Tone Buffer Amp and Filter 2 AA Batteries Switching Power gt Tricolor Power LED LMb Transmitter Voltage Controlled Oscillator Filters 3 Amplifier LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter Battery Installation The transmitter is powered by two AA batteries We recommend using alkaline lithium or rechargeable batteries for longest life Standard zinc carbon batteries marked heavy duty or long lasting are not adequate The battery status circuitry compensates for the differ ence in voltage drop between alkaline and lithium bat teries across their usable life so it s important to select the correct battery type in the menu Because rechargeable batteries run down q
21. his situation elegantly with rarely audible audio arti facts as the receiver approaches its squelch threshold In contrast a purely digital system tends to drop the Rio Rancho NM 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 Frequency Agility Frequency selection is provided in 100 kHz or 25 kHz steps with up to 3072 channels available covering three standard Lectrosonics 25 6 MHz blocks Frequencies are displayed on the LCD in MHz and in a hex code used with earlier Lectrosonics equipment Wide Band Deviation Deviation has a direct effect on the dynamic range and signal to noise ratio of an FM system The greater the deviation the wider the dynamic range and the better the signal to noise ratio In the Digital Hybrid Wireless mode the system operates with a maximum of 75 kHz of deviation The resulting 180 kHz of occupied bandwidth just fits inside the government specified spectral mask of 200 kHz In order to make this pos sible an a
22. ically selects the best channel for operation Lectrosonics receivers equipped with an IR Sync func tion allow the receiver to set frequency step size and compatibility modes on the transmitter via an infrared link between the two units LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter About Overlapping Frequency Blocks When two frequency blocks overlap it is possible to select the same frequency at the upper end of one and the lower end of the other While the frequency will be the same the pilot tones will be different as indicated by the hex codes that appear In the following examples the frequency is set to 494 500 MHz but one is in block 470 and the other in block 19 This is done intentionally to maintain compat ibility with receivers that tune across a single block The block number and hex code must match the receiver to enable the correct pilot tone Make sure the block number and hex code match the receiver setting Selecting Audio Polarity Phase Audio polarity can be inverted at the transmitter so the audio can be mixed with other microphones without comb filtering The polarity can also be inverted at the receiver outputs Adjusting LCD Backlight For viewing the LCD in dimly lit conditions the backlight can be turned on continuously or set to turn off auto matically after either 30 seconds or 5 minutes RF ON OFF on the Menu The RF output of the transmitter can be turned o
23. ires to the pins on the insert 5 Solder the wires and resistors to the pins on the insert according to the diagrams shown in Wiring Hookups for Different Sources A length of 065 OD clear tubing is included if you need to insulate the resistor leads or shield wire Ie Backshell without strain relief 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 that are not using servo bias circuitry and voltage source for 4 volt servo bias wiring PIN 3 Microphone level input and bias supply PIN 4 Bias voltage selector for Pin 3 Pin 3 voltage depends on Pin 4 connection Pin 4 tied to Pin 1 OV Pin 4 Open 2V Pin 4 to Pin 2 4V PIN 5 Line level input for tape decks mixer outputs musical instruments etc Remove strain relief if using dust boot 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 6 If necessary remove the rubber strain relief from the TA5F backshell by simply pulling it out 7 Seat the insulator on the insert Slide the cable clamp over the and of the insulator and crimp as shown on the next page 8 Insert the assembled insert insulator clamp into the latchlock Make sure the tab and s
24. liere microphone Fig 6 LO Z MICROPHONE LEVEL SIGNALS SHIELD XLR JACK For low impedance dynamic mics or electret mics with internal battery or power supply O05 Insert 1k resistor in series with pin 3 if attenuation is needed 14 Fig 8 UNBALANCED LINE LEVEL SIGNALS SLEEVE gC TIP LINE LEVEL RCA or 1 4 PLUG TA5F For signal levels up to 3V 12 dBu before limiting Fully PLUG compatible with 5 pin inputs on other Lectrosonics transmitters U such as the LM and UM Series A 20k ohm resistor can be See Line Level inserted in series with Pin 5 for an additional 20 dB of attenuation to handle up to 30V 32 dBu Signals on next page SHIELD Fig 8 UNBALANCED LINE LEVEL SIGNALS SLEEVE gC TIP LINE LEVEL RCA or 1 4 PLUG 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 SHIELD Simple Wiring for Servo Bias Inputs ONLY Fig 9 2 VOLT POSITIVE BIAS 2 WIRE ELECTRET SHIELD 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 10 2 VOL
25. lled environment This device should be installed and operated so that its antenna s are not co located or operating in conjunction with any other antenna or transmitter This device complies with Industry Canada radiation exposure limits as set forth for a controlled professional use only Cet appareil est conforme avec les normes d Industrie Canada concernant les limites d exposition aux radiations pour un usage professionnel contr l seulement LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter 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 at tempt anything other than the simplest repair If the repair is more complicated than a broken wire or loose connection send the unit to the factory for repair and service Don t attempt to adjust any controls inside the units Once set at the factory the various controls and trimmers do not drift with age or vibration and never require readjustment There are no adjustments inside that will make a malfunctioning unit start working LECTROSONICS Service Department is equipped an
26. lot align to allow the insert to fully seat in the latchlock Thread the backshell onto the latchlock LECTROSONICS INC Digital Hybrid Wireless Belt Pack Transmitter Microphone Cable Termination for Non Lectrosonics Microphones TA5F Connector Assembly ofl 3 E BS E Mic Cord Stripping Instructions VIEW FROM SOLDER SIDE OF PINS 0 15 gt k o 3 gt 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 Insulation Shield Crimp these Crimp these fingers to fingers to a contact the clamp the NOTE This termination is intended for UHF shield insulation 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 from what is shown here Rio Rancho NM 13 LMb Input Jack Wiring for Different Sources In addition to the microphone and line level wiring illus trated below Lectrosonics makes a number of cables and adapters for other situations such as connecting musical instruments quitars bass guitars etc to the transmitter Visit and click on Accessories or download the
27. master catalog A lot of information regarding microphone wiring is also available in the FAQ section of the web site at www lectrosonics com gt SUPPORT gt FAQs Follow the instructions to search by model number or other search options Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters Fig 1 2 VOLT POSITIVE BIAS 2 WIRE ELECTRET PIN SHIELD 15k AUDIO 3 3k Compatible wiring for microphones such as Countryman E6 headworn and B6 lavaliere Fig 2 4 VOLT POSITIVE BIAS 2 WIRE ELECTRET SHIELD Most common type of wiring for lavaliere mics Fully compatible with 5 pin inputs on Lectrosonics transmitters such as the LM and UM Series Fig 3 DPA MICROPHONES Danish Pro Audio miniature models SHIELD PIN AA O O O 4 NOTE The resistor value can range from 3k to 4k ohms 5 ae This wiring is for DPA lavalier and headset microphones Fig 4 2 VOLT NEGATIVE BIAS 2 WIRE ELECTRET 2 7k PIN Compatible wiring for microphones such as negative bias TRAM models NOTE The resistor value can range from 2k to 4k ohms Fig 5 4 VOLT POSITIVE BIAS 3 WIRE ELECTRET WITH EXTERNAL RESISTOR SHIELD SOURCE AUDIO Used for 3 wire lavaliere microphones that require an external resistor such as the Sanken COS 11 1k This wiring is fully compatible with 5 pin inputs on Lectrosonics transmitters such as the LM and UM Series This is the wiring for the Lectrosonics M152 lava
28. mmable switch still works e Power can still be turned off by using the power menu or removing the batteries Power Menu Pressing the power button when the unit is turned on will display a menu with several options e Resume returns to the previous mode and screen e Rf On enters a screen to enable the operating or standby modes e AutoOn allows the unit to automatically power back up after a power failure or when new batteries are installed works in the operating mode only e Pwr Off turns the unit off irrevocably Resume and Pwr Off will execute the command immediately The other two menu items will open a screen asking for a Yes or No answer LMb Selecting Programmable Switch Functions The programmable switch on the top panel can be con figured using the menu to provide several functions e Power turns the power on and off e Mute mutes the audio when switched on e TalkBk talkback redirects the audio to a different output channel on the receiver with receivers that offer this function e none disables the switch NOTE The programmable switch will continue to operate whether or not keypad changes are locked Main Window Indicators The Main Window displays the block number Standby or Operating mode operating frequency audio level battery status and programmable switch function When the frequency step size is set at 100 kHz the LCD will look like the following Block number
29. nges to SettingS ceeeeeeee Power Menu cccccesssceseseeeeeseeeeeseneeessees Selecting Programmable Switch Functions Main Window Indicators cceeceeesseeeeeneeeeenneeeesneeereneeees Selecting the Compatibility Compat Mode eee 9 Connecting the Signal Source eeeeceeeeeeeeteeteeeeeeeeeeeaes 9 Adjusting the Input Gain eee eceeeeeeeeneeeeeeteeetseeeeeeeaes 9 Selecting Step Size oo eeceeeeeeeeeeeeeteeeeeeeeeeetneeeeeeeneeees 10 Selecting Frequency eecceeececeeeeeeeeeeeeseeeeeeeseeeeeeeenaeee 10 Selecting Frequency Using Two Buttons 0cee 10 Helpful Features on Receivers About Overlapping Frequency Blocks Selecting Audio Polarity Phase eceeeeseeseeeeneeeeeeees Adjusting LCD Backlight 0 0 0 0 cceeccesseeseseeeeeeteneeeeeeeeees RF ON OFF on the Menu Selecting Battery Type 6 Restoring Default Settings IR infrared SYNC 5 Pin Input Jack Wiring csecceseeesseeeeneeeeesnseeeeseeeeenseeeeenes Microphone Cable Termination for Non Lectrosonics Microphones ssssesseeeeees 13 Input Jack Wiring for Different Sources cssceeeee 14 Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters 20 0 ceeseeeeeseeeeeeneeeeeneeeeeneeereaes 14 Simple Wiring for Servo Bias Inputs ONLY 00 14 Microphone RF BypasSing ceessceeeseeeeeseeee
30. nsmitter Battery LED off when Power Switch ON No Transmitter Modulation LEDs when Signal Should be Present Receiver Indicates RF But No Audio Receiver RF Indicator Off No Sound Or Low Sound Level Receiver Indicates Proper Audio Modulation Distorted Sound Wind Noise or Breath Pops Hiss and Noise Audible Dropouts Excessive Feedback With Microphone Rio Rancho NM It is important that you follow these steps in the sequence listed Possible Cause 1 Batteries are inserted incorrectly 2 Batteries are low or dead aOahWND oR WP N N RON oo Gain control turned all the way down Batteries are inserted incorrectly Check power LED Mic capsule is damaged or malfunctioning Mic cable damaged or miswired Instrument Cable damaged or not plugged in Musical instrument output level set too low Audio source or cable connected to transmitter is defective Try using an alternate source or cable Make sure the compatibility mode is the same on transmitter and receiver Ensure musical instrument volume control is not set to minimum Check for correct pilot tone indication on the receiver See item on page 11 entitled About Overlapping Frequency Blocks Ensure that the transmitter and receiver are set to the same frequency and that the hex code matches Transmitter not turned on or battery is dead Receiver antenna missing or imp
31. output level Microphone too close to speaker system Microphone is too far from user s mouth 1z LMb Specifications and Features Operating Frequencies Block A1 470 100 537 575 Block B1 537 600 614 375 Block C1 614 400 691 175 Block D1 691 200 767 975 export only Frequency Selection Steps Selectable 100 kHz or 25 kHz Audio Performance Digital Hybrid mode Frequency Response e Mic 70 Hz to 20 kHz 1dB e Line Instrument 35 Hz to 20 kHz 1dB Low frequency roll off Mic input 3 dB at 70 Hz slope steepens at lower frequencies RF Power output Pilot tone Frequency Stability Deviation Spurious radiation Equivalent input noise Input level Input impedance Input limiter Gain control range Modulation indicators Controls Audio Input Jack Antenna Battery Battery Life Weight Dimensions Emission Designator 18 50 mW THD 0 2 typical 25 to 32 kHz 5 kHz deviation SNR at receiver output SmartNR No Limiting w Limiting Digital Hybrid mode OFF 103 5 108 0 0 002 ae The p envelope ae g NORMAL 1070 111 5 imiter provides exceptionally goo FULL 108 5 113 0 75 kHz max Digital Hybrid mode 60 dB below carrier 120 dBV A weighted Nominal 2 mV to 300 mV before limiting Greater than 1V maximum with limiting e Mic 300 Ohm e Line 2k Ohm DSP controlled dual envelope soft limiter with greater than 30 dB range 4
32. power the transmitter The type of batteries in use are selectable in a menu on the LCD When alkaline or lithium batteries are being used the LED labeled BATT on the keypad glows green when the batteries are good The color changes to red when the they are nearing the end of life When the LED begins to blink red there will be only a few minutes remaining The Power Function LED on the top panel will mirror the keypad LED unless the programmable switch is set to the Mute or Talkback mode and the switch is turned on The exact point at which the LEDs turn red will vary with battery brand and condition temperature and power consumption The LEDs are intended to simply catch your attention not to be an exact indicator of remaining time A weak battery will sometimes cause the LEDs to glow green immediately after the transmitter is turned on but it will soon discharge to the point where the LED will turn red or the unit will turn off completely Rechargeable batteries give little or no warning when they are depleted If you wish to use these batteries in the transmitter you will need to manually keep track of the operating time to prevent interruptions caused by dead batteries Start with a fully charged battery then measure the time it takes for the Power LED to go out completely Battery icon Reserved for Future Use Input Jack Power Function LED Menu navigation buttons Modulation Programmable LEDs Switch
33. roperly positioned Operating distance is too great Transmitter may be set to the Standby Mode See page 7 Receiver output level set too low Receiver output is disconnected cable is defective or miswired Sound system or recorder input is turned down Transmitter gain audio level is too high Check Modulation LEDs on transmitter and receiver while distortion is being heard Receiver output level 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 Transmitter and receiver may not be set to the same compatibility mode Some mis matched combinations will pass audio RF interference Reset both transmitter and receiver to a clear channel Use scanning function on receiver if available Reposition microphone or use a larger windscreen or both Omni directional mics produce less wind noise and breath pops than directional types Transmitter gain audio level far too low Receiver antenna missing or obstructed Operating distance too great RF interference Reset both transmitter and receiver to a clear channel Use scanning function on receiver if available Musical instrument output set too low Microphone capsule picking up RF noise See item on page 15 entitled Microphone RF Bypassing Transmitter gain audio level too high Check gain adjustment and or reduce receiver
34. s returned to Lectrosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of Lectrosonics Inc and the entire remedy of the purchaser for any breach of warranty as outlined above NEITHER LECTROSONICS INC NOR ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT SHALL BE LIABLE FOR ANY INDIRECT SPECIAL PUNITIVE CONSEQUENTIAL OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS EQUIPMENT EVEN IF LECTROSONICS INC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF LECTROSONICS INC EXCEED THE PURCHASE PRICE OF ANY DEFECTIVE EQUIPMENT RW This warranty gives you specific legal rights You may have additional legal rights which vary from state to state AANA N U UNN f LECTROSONICS w 581 Laser Road NE Rio Rancho NM 87124 USA e www lectrosonics com 505 892 4501 800 821 1121 fax 505 892 6243 sales lectrosonics com 12 November 2015 LMBman indd
35. the mic capsule If this is not pos sible or if you are still having problems capacitors can be installed on the mic pins inside the TA5F connec tor housing Refer to the diagram below for the correct locations of capacitors Use 330 pF capacitors 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 2 WIRE MIC P 3 WIRE MIC Capacitors next to mic capsule SHIELD p asore y SHIELD Oo E O AUDIO LE oO gt pe 02 TASF CONNECTOR Capacitors in TASF TA5F connector Rio Rancho NM CONNECTOR Line Level Signals The normal wiring for line level signals is e Signal Hot to pin 5 e Signal Gnd to pin 1 e 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 PIN SHIELD GND Line Level o2 9 Normal Wiring O3 30 O AUDIO TA5F PLUG See Fig 8 on previous page SHIELD GND EN Zs Line Level Se Do O More Headroom e A va 1 20 dB 3 20k aubo f TA5F 5 PLUG Wiring Diagram for MI39A Instrument Cable The MI39ARA
36. uite abrupt ly using the Power LED to verify battery status will not be reliable However it is possible to track battery status using the Battery Timer function available in Lectroson ics Digital Hybrid Wireless receivers Push outward on the Battery Compartment Door and lift it to open Insert the batteries according to the markings inside the battery compartment If the batteries are inserted incorrectly the door will close but the unit will not operate Rio Rancho NM The battery contacts can be cleaned with alcohol and a cotton swab or a clean pencil eraser Be sure not to leave any remnants of the cotton swab or eraser crumbs inside the compartment Series connection plate Contact springs Belt Clips The wire belt clip may be removed by pulling the ends out of the holes in the sides of the case Use pliers to grasp the wire and avoid scratching the surface of the housing Pliers also help when installing the clip An optional spring loaded hinged belt clip model num ber BCSLEBN is also available This clip is attached by removing the plastic hole cap on the back of the hous ing and mounting the clip with the supplied screw LMb Operating Instructions IR Sync Port RF Indicator Battery Status LED Belt clip mounting hole Slide door outward to open battery door Battery Status LED Indicators Alkaline lithium or rechargeable batteries can be used to
37. ve the user speak or sing at the loudest level that oc cur during use or set the output level of the instru ment or audio device to the maximum level that will be used 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 Always leave the transmitter gain ad justment set according to these instructions and do not change it to adjust the audio output level of the receiver LMb Selecting Step Size This menu item allows frequencies to be selected in either 100 kHz or 25 kHz increments If the desired frequency ends in 025 050 or 075 MHz the 25 kHz step size must be selected Normally the receiver is used to find a clear operat ing frequency All Lectrosonics Digital Hybrid Wireless receivers provide a scanning function to quickly and easily find prospective frequencies with little or no RF interference In other cases a frequency may be speci fied by officials at a large event such as the Olympics or a major league ball game Once the frequency is determined set the transmitter to match the associated receiver Selecting Frequency The s
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