Lectrosonics SMQM Body Worn wireless microphone transmitter User Manual SMDman pmd

Lectrosonics Inc Body Worn wireless microphone transmitter SMDman pmd

user manual

SMSuper Miniature Belt-Pack TransmitterIncluding SMD, SMQWith Digital Hybrid Wireless™ TechnologyINSTRUCTION MANUALRio Rancho, NM, USAwww.lectrosonics.comFill in for your records: Serial Number: Purchase Date:
SMLECTROSONICS, INC.2Thank you for selecting the Lectrosonics SM ultra-miniature transmitter. The unique design providesseveral distinct features for professional applications:Outstanding RF operating rangeSuperb audio qualityUltra-lightweight, corrosion resistant housingWater resistant seals for use in damp environmentsProgrammable compatibility modes for maximumversatilityThe Digital Hybrid WirelessTM design (US PatentPending) combines 24-bit digital audio with analog FMresulting in a system that has the same operating rangeas analog systems (plus the graceful failure at the limitsof that range), the same spectral efficiency as analogsystems, the same long battery life as analog systems,but with the excellent audio found in digital systems.The SM uses a standard Lectrosonics 5-pin type inputjack for use with electret lavaliere mic, dynamic mic, orline level signals. A water resistant control panel withLCD, membrane switches and multi-color LEDs makeinput gain adjustments and frequency and compatibilitymode selection quick and accurate, without having toview the receiver. The battery compartment accepts anAA lithium battery. Plus, the SM is machined from asolid aluminum block to provide an extremely light-weight and rugged package. A special non-corrosivefinish (the same one used by NASA) resists salt waterexposure and perspiration in extreme environments.The DSP-based design works with all Digital Hybridrecievers, and is backward compatible withLectrosonics 200 and 100 Series and IFB receivers andsome other brands of analog wireless receivers. Onlythe SM transmitter is covered in this manual. Compan-ion receivers are covered in separate manuals.
Super-Minature Belt Pack TransmitterRio Rancho, NM 3Table of ContentsGeneral Technical Description ..............................................................................................................................................................4Introduction ...........................................................................................................................................................................................4Digital Hybrid Wireless™ Technology* .................................................................................................................................................4No Pre-Emphasis/De-Emphasis ...........................................................................................................................................................4Low Frequency Roll-Off ........................................................................................................................................................................ 4Input Limiter .......................................................................................................................................................................................... 5Digital Signal Processor .......................................................................................................................................................................5Microprocessor, PLL and VCO Circuits ................................................................................................................................................ 5Compatibility Modes .............................................................................................................................................................................5Pilot Tone Squelch ................................................................................................................................................................................5Control Panel ........................................................................................................................................................................................5Wide-Band Deviation ............................................................................................................................................................................5Battery Life ........................................................................................................................................................................................... 5Frequency Agility ..................................................................................................................................................................................5Circulator/Isolator .................................................................................................................................................................................5Controls and Functions ......................................................................................................................................................................... 6LCD Screen .......................................................................................................................................................................................... 6Power LED............................................................................................................................................................................................6Audio Input Jack ...................................................................................................................................................................................6Modulation LEDs ..................................................................................................................................................................................6Audio Button .........................................................................................................................................................................................6Freq Button ...........................................................................................................................................................................................6Up/Down Arrows ................................................................................................................................................................................... 6Antenna ................................................................................................................................................................................................6Battery Compartment and Thumb Screw .............................................................................................................................................6SM Screen Selections ............................................................................................................................................................................ 7Audio Screen ........................................................................................................................................................................................ 7Frequency Screen ................................................................................................................................................................................ 7Compatibility Mode Screen .................................................................................................................................................................. 7Lock/Unlock Screen ..............................................................................................................................................................................7Power On Timer Screen .......................................................................................................................................................................7Power Off Timer Screen .......................................................................................................................................................................7Standby Mode ......................................................................................................................................................................................8Battery Installation ................................................................................................................................................................................. 8Operating Instructions .......................................................................................................................................................................... 9Power Up and Boot Sequence .............................................................................................................................................................9Power Down .........................................................................................................................................................................................9Standby Mode ......................................................................................................................................................................................9Selecting the Compatibility Mode .........................................................................................................................................................9Setting Transmitter Operating Frequency ...........................................................................................................................................10Attaching a Microphone and Adjusting Gain ......................................................................................................................................10Locking or Unlocking the Control Panel..............................................................................................................................................115-Pin Input Jack Wiring ........................................................................................................................................................................12Microphone RF Bypassing ................................................................................................................................................................. 12Line Level Signals ..............................................................................................................................................................................12Wiring Hookups for Different Sources ...............................................................................................................................................13Troubleshooting ...................................................................................................................................................................................16Specifications and Features ............................................................................................................................................................... 18Service and Repair ............................................................................................................................................................................... 19Returning Units for Repair ..................................................................................................................................................................19
SMLECTROSONICS, INC.4*US Patent PendingIntroductionThe SM transmitter uses ±75 kHz wide deviation for anextremely high signal to noise ratio, switching powersupplies to provide constant voltages to the transmittercircuits from the beginning (1.5 Volts) to the end (0.85Volts) of battery life, and an ultra low noise input amplifierfor quiet operation. It is gain protected with a wide rangedual envelope input limiter which cleanly limits inputsignal peaks over 30 dB above full modulation.Servo InputThe SM input is a radically different input systemcompared to previous Lectrosonics transmitter micro-phone inputs. It is so superior that this input system willeventually be utilized by all Lectrosonics UHF transmit-ters. This may cause some confusion but the advan-tages are very real. The improvements are audible andmake the transmitters easier to use and much harder tooverload. It is no longer necessary on some mics tointroduce pads 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.Digital Hybrid Wireless™ Technology*All wireless links suffer from channel noise to somedegree, and all wireless microphone systems seek tominimize the impact of that noise on the desired signal.Conventional analog systems use compandors forenhanced dynamic range, at the cost of subtle artifacts(known as “pumping” and “breathing”). Wholly digitalsystems defeat the noise by sending the audio informa-tion in digital form, at the cost of some combination ofpower, bandwidth and resistance to interference.General Technical DescriptionLectrosonics Digital Hybrid Wireless™ systems over-come channel noise in a dramatically new way, digitallyencoding the audio in the transmitter and decoding it inthe receiver, yet still sending the encoded informationvia an analog FM wireless link. This proprietary algo-rithm is not a digital implementation of an analogcompandor but a technique that can be accomplishedonly in the digital domain, even though the inputs andoutputs are analog.Channel noise still impacts received signal quality andwill eventually overwhelm a receiver. Digital HybridWireless™ simply encodes the signal to use a noisychannel as efficiently and robustly as possible, yieldingaudio performance that rivals that of wholly digitalsystems, without the power and bandwidth problemsinherent in digital transmission.Because it uses an analog FM link, Digital HybridWireless™ enjoys all the benefits of conventional FMwireless systems, such as excellent range, efficient useof RF spectrum, and resistance to interference. How-ever, unlike conventional FM systems, it does away withthe analog compandor and its artifacts.No Pre-Emphasis/De-EmphasisThe Digital Hybrid Wireless™ design results in a signal-to-noise ratio high enough to preclude the need forconventional pre-emphasis (HF boost) in the transmitterand de-emphasis (HF roll off) in the receiver.Low Frequency Roll-OffA 12 dB per octave low frequency roll-off is provided inthe audio section, with the -3 dB point at 70 Hz. The
Super-Minature Belt Pack TransmitterRio Rancho, NM 5actual roll-off frequency will vary somewhat according tothe low frequency response of the mic capsule beingused.The low frequency roll-off is used to remove subsonic(or very low frequency) audio, often produced by airconditioning systems, automobile traffic and othersources from the audio signal. Excessive low frequencycontent in the audio input can cause a variety of audioproblems including driving the transmitter into limiting.Input LimiterA DSP-controlled analog audio limiter is employedbefore the analog-to-digital converter. The limiter has arange of more than 30 dB for excellent overload protec-tion. A dual release envelope makes the limiter acousti-cally transparent while maintaining low distortion. It canbe thought of as two limiters in series, connected as afast attack and release limiter followed by a slow attackand release limiter. The limiter recovers quickly frombrief transients, so that its action is hidden from thelistener, but recovers slowly from sustained high levels,to both keep audio distortion low and preserve shortterm dynamic changes.Two bicolor LEDs indicate limiter activity. (See Operat-ing Instructions, Adjusting Audio Levels.)Digital Signal ProcessorThe DSP encodes the digitized audio from the A-DConverter and adds an ultrasonic Pilot Tone to controlthe receiver's squelch (only in 400 Series, 200 Series,IFB Compatibility Mode, and Mode 6 – see Pilot ToneSquelch). It also controls the input limiter.Microprocessor, PLL and VCO CircuitsAn 8-bit microprocessor monitors user command inputsfrom the Control Panel buttons and numerous otherinternal signals. It works intimately with the DSP toensure the audio is encoded according to the selectedCompatibility Mode and the correct pilot tone is addedto the encoded signal. (See Pilot Tone Squelch.) It alsodrives the LCD display and operates the PLL/VCOcircuits.Compatibility ModesThe SM transmitter was designed to operate withLectrosonics 400 Series receivers and will yield the bestperformance when doing so. However, due to theflexibility of digital signal processing, the SM is also ableto operate with Lectrosonics 200 Series, Lectrosonics100 Series, IFB and certain non-Lectrosonics receiversin special compatibility modes. (Contact the Lectroson-ics Sales Department for a complete list of non-Lectrosonics compatible receivers.)Pilot Tone SquelchA fixed frequency pilot tone squelch system (such asLectrosonics 200 Series) ensures that a receiverremains muted until it receives the pilot tone from thematching transmitter, even if a strong RF signal ispresent on the carrier frequency of the system.The 400 Series (Digital Hybrid Wireless™) takes this astep further by using one of 256 different ultrasonictones between 25 kHz and 32 kHz to modulate thecarrier and operate the receiver squelch. The pilot tonefrequency is chosen according to which of the 256channels has been selected. (See SM Screen Selec-tions.)This ensures that all transmitters in a system havedifferent pilot tone frequencies so that even spurious RFfrom the wrong transmitters can’t open the receiversquelch.Control PanelA waterproof control panel which includes four mem-brane switches and an LCD screen is used to set andadjust the operational settings, and also provide avisual feedback of overall system operation. (SeeControls and Functions.)Wide-Band DeviationA ±75 kHz deviation improves the capture ratio, signalto noise ratio and AM rejection of a wireless systemdramatically, compared to other designs that use 30kHz to 40 kHz deviation. This combined with a full 100mW of power output makes a significant improvementin signal to noise ratio and maximum operating range.Battery LifeSwitching power supplies throughout the design allowabout 4.5 hours of operation using a single AA lithiumbattery (Two AA batteries for the SMD/Q). If shorteroperating times are acceptable, an alkaline or NiMHbattery can be used. In the SM, AA alkaline batteriesprovide about 2 hours of operation, and a NiMH AAbattery provides about 3.5 hours of operation.Note: A NiMH battery will give little or no warningwhen it is depleted. If you wish to use NiMHbatteries, we recommend trying fully chargedbatteries in the unit, noting the length of time thatthe batteries will run the unit and then using thebattery timer feature available on most 400 Seriesreceivers.The battery contact is designed to prevent “rattle” asthe unit is handled.Frequency AgilityThe transmitter section uses a synthesized, frequencyselectable main oscillator. The frequency is extremelystable over a wide temperature range and over time.256 frequencies in 100 kHz steps over a 25.5 MHzrange are available.Circulator/IsolatorThe RF output circuit includes a one way circulator/isolator using a magnetically polarized ferrite. Thisdevice greatly reduces RF intermodulation producedwhen multiple transmitters are used at separations ofless than five feet. It also provides additional RF outputstage protection but is rarely seen in a wireless micro-phone transmitter due to its high cost.
SMLECTROSONICS, INC.6Controls and FunctionsLCD ScreenThe LCD is a numeric-type Liquid Crystal Display usedin conjunction with the AUDIO and FREQ buttons, andthe UP and Down arrows, to configure the SM. (See SMSCREEN SELECTIONS.) It is also used with theModulation and PWR LEDs to monitor system operation.Power LEDThe PWR LED glows green when the battery is good.The color changes to red when there is about 30minutes of operation left with the recommended lithiumbattery. (An alkaline battery will have about 20 minutesof life left.) When the LED begins to blink red, there areonly a few minutes of life.Note: A NiMH battery will give little or no warningwhen it is depleted. If you wish to use NiMHbatteries in the SM, we recommend trying fullycharged batteries in the unit, noting the length oftime that the batteries will run the unit and thenusing the battery timer feature available on most400 Series receivers.A weak battery will sometimes cause the PWR LED toglow green immediately after being put in the unit, butwill soon discharge to the point where the LED will gored or shut off completely. When the SM is in SLEEPmode, the LED blinks green every few seconds (SeeSleep Mode, page X).Audio Input JackThe input on the SM accommodates virtually everylavaliere, handheld or shotgun microphone available.Different line level signals can also be accommodated.(See LINE LEVEL SIGNALS and 5-PIN INPUT JACKWIRING.)Modulation LEDsThe Modulation LEDs provide a visual indication of theinput audio signal level from the microphone. Thesetwo bicolor LEDs can glow either red or green toindicate modulation levels.Signal Level -20 LED -10 LEDLess 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 GreenGreater than +10 db Red RedAudio ButtonThe AUDIO button is used to display the audio levelsetting (0 dB to 44 dB) on the LCD and used in con-junction with the Up and Down arrows to adjust theaudio level input from the microphone.The AUDIO button is also used with the FREQ button toenter standby mode and to power the transmitter on or off.Freq ButtonThe SM provides 256 individual frequencies, in 100 kHzincrements, across a 25.5 MHz frequency block. TheFREQ Button displays the selected operating frequencyand also toggles the LCD between displaying the actualoperating frequency in MHz and a two-digit hexadeci-mal number that corresponds to the equivalent Lec-trosonics Frequency Switch Setting.The FREQ button is also used with the AUDIO button toenter standby mode and to power the transmitter on or off.Up/Down ArrowsThe Up and Down arrow buttons are used to select theoperating frequency, adjust the audio level, or set theCompatibility Mode.Pressing both arrows simultaneously enters the lockcountdown. Holding the two arrow buttons until thecountdown completes locks the control panel buttons sothey can only be used to display current settings. “Loc”is displayed to indicate the controls are locked.Once locked, the buttons can be unlocked only byremoving the battery, or via the remote control (ifenabled).AntennaThe fixed flexible cable antenna is supplied with thetransmitter. This antenna is cut to the 1/4 wavelength ofthe center of the frequency block (the frequency range)of the transmitter.Battery Compartment and Thumb ScrewThe large knurled thumbscrew is used to release orsecure the Battery Compartment Cover Plate, allowingaccess to the battery.BatteryCompartmentThumb ScrewBatteryCompartmentCover PlateAudioInput JackAntennaAUDIO ButtonLCDFREQ ButtonModulationLEDsPWR LEDControl PanelUP Arrow
Super-Minature Belt Pack TransmitterRio Rancho, NM 7SM Screen SelectionsSix screens are used to set up and operate the SM.These screens are used to set the operating frequency,adjust the audio modulation level, select the Compatibil-ity Mode or lock the control panel and power down thetransmitter.Audio ScreenThe Audio screen is the defaultscreen at the end of the powerup boot sequence. It can alsobe accessed by pressing theAUDIO button during normal operation.The Audio screen displays the current audio input levelsetting.Frequency ScreenThe Frequency Screen displaysthe operating frequency in MHzor as a two-digit hexadecimalnumber that corresponds to theequivalent Lectrosonics Fre-quency Switch Setting. Press-ing the FREQ button togglesbetween the two displays.When the operating frequency is displayed in MHz, thedecimal point also acts as the PLL lock indicator. If thedecimal point is constantly blinking or missing, thisindicates that the transmitter is having RF problems.(See Troubleshooting, Receiver RF Indicator Off.)Compatibility Mode ScreenHolding down the Up arrowbutton while powering up theSM opens the CompatibilityMode screen. By using the Upor Down arrow buttons, the user can select one of sixcompatibility modes:Note: RF transmission is prevented while selectingCompatibility Modes. Also, the SM exits theCompatibility Mode screen to Standby Mode. (SeeStandby Mode, page 8.)• 400 - This is the factory default setting and works withall Lectrosonics 400 Series Digital Hybrid Wireless™receivers. This mode offers the best audio quality.• 200 - This mode works with all Lectrosonics 200Series compatible receivers.• 100 - This mode works with all Lectrosonics 100Series compatible receivers.• 3 - (Mode 3) This mode works with a number of non-Lectrosonics analog receivers. Contact the companyfor a list of compatible receivers.• IFB - This mode works with all Lectrosonics IFBcompatible receivers.• 6 - (Mode 6) This mode works with a number of non-Lectrosonics analog receivers. Contact the companyfor a list of compatible receivers.644.400CH 2CAud 12While in the compatibility mode screen, pressing eitherthe AUDIO or FREQ button exits to standby mode. Topower off from the compatibility mode screen, pressAUDIO and FREQ together.Lock/Unlock ScreenSimultaneously pressing both the Up and Down arrowbuttons during normal opera-tion starts the Lock timer. Thetimer starts at three and countsdown to zero.When the timer reaches zero, the transmitter’s controlsare locked.The LCD will display the locked condition as long as thearrow buttons are held, thenrevert back to the previousscreen when either button isreleased.With the controls locked, the AUDIO and FREQ buttonscan still be used to display current settings. Anyattempt to change a setting by pressing either the Up orDown arrow button will result in a reminder that thecontrols are locked.Important: Once the transmitter is locked, itcannot be unlocked or powered off using thebuttons. The only ways to unlock a lockedtransmitter are to remove the battery or unlockit via the remote control. The remote controlwill work only if the transmitter was previsoulyconfigured to respond to the remote control.Lock mode does not persist when the power isoff.Power On Timer ScreenSimultaneously holding theAUDIO and FREQ buttonswhen the unit is turned offdisplays the Power ON Timerscreen. The screen counts upfrom one and starts the Power On sequence when thecount reaches three. Releasing either button prior tothe Power On Timer screen reaching three puts the unitin Standby Mode where the user can review transmitterfrequency and audio level settings without transmitting.(See Standby Mode, page 8.)Power Off Timer ScreenSimultaneously holding theAUDIO and FREQ buttonswhile the unit is operatingdisplays the Power Off Timerscreen. The screen countsdown from three and turns offthe transmitter when it reaches zero. Releasing eitherbutton prior to the Power Off Timer screen indicatingzero returns the unit to normal operation and displaysthe previous screen.CP 400On . . .1Initial Power On TimerScreenLoc 1unLoc1oFF . . .3Initial Power Off TimerScreen
SMLECTROSONICS, INC.8The SM transmitter is powered by a single standard AA1.5 volt battery, while the SMD and SMQ use two AAbatteries. We recommend using lithium batteries forlongest life. In the SM, lithium batteries provide over4.5 hours of operation at room temperature.Note: Standard zinc-carbon batteries marked“heavy-duty” or “long-lasting” are not adequate.The battery status circuitry is designed for the voltagedrop over the life of lithium batteries.To install new batteries:1. Turn the Battery Cover Plate Thumbscrew counter-clockwise, open the battery compartment andremove any old batteries.2. Insert the new battery (or batteries) into the hous-ing. Take note of the polarity marked on the caseshowing the location of the positive (+) and nega-tive (-) terminals. The positive (+) battery terminalgoes into the transmitter first.3. Replace the Battery Cover Plate and tighten theBattery Cover Plate Thumbscrew.Battery InstallationStandby ModeQuickly pressing both theAUDIO and FREQ buttons froma power off condition places theunit in Standby Mode. In thismode, the screen displays “rfOFF” to inform the user that the unit is not transmitting.Holding the FREQ button in Standby Mode displays thecurrent operating frequency of the transmitter. Theoperating frequency can be changed by holding theFREQ button and pressing either the Up or Downbutton. Release the FREQ button, then press and holdit again to toggle the display between frequency in MHzand the hex code corresponding to the equivalentLectrosonics Frequency Switch Setting.Holding the AUDIO button in Standby Mode displaysthe current audio input level setting. This level can bechanged by holding the AUDIO button and pressingeither the Up or Down button.Quickly pressing both the FREQ and AUDIO buttonssimultaneiously when the unit is in Standby Modepowers off the transmitter.Remote Control OperationNote: A remote control (Lectrosonics model RM) isavailable to change certain settings on the SM insituations where the controls would be difficult toaccess, for example, when the transmitter hasbeen placed underneath an elaborate costume.The RM is not included with the SM.The SM transmitter may be configured to respond tosignals from the remote control or to ignore them. Thissetting is accessed by holding down the the Downarrow button while powering the transmitter on. Use thearrow keys to toggle between “rc on” (remote controlon) and “rc oFF” (remote control off). The default settingIf a remote control signal is detected but the transmitteris set to “rc oFF”, the message “rc oFF” will be dis-played briefly on the transmitter’s LCD, to confirm that avalid signal was received, but that the transmitter is notconfigured to respond to it.Functions available from the remote control are:• Audio Level• Frequency• Lock/Unlock Buttons• Sleep/Wake (power saving mode)In sleep mode, the SM uses one fifth the normalamount of current. For example, in sleep mode it willdrain the battery as much in five hours as it would do inone hour of normal operation. Sleep mode can only beinvoked with the remote control, and can only berevoked with the remote control or by removing thebattery. When in sleep mode, the PWR LED blinksgreen occasinally to indicate that the SM is asleep andnot turned off.AA BatteryBatteryCompartmentBatteryCover PlateThumbscrewBatteryCover PlaterF OFFStandby ScreenTwo BatteryCompartments(SMD, SMQ)Two AA Batteries
Super-Minature Belt Pack TransmitterRio Rancho, NM 9Standby ModeStandby Mode allows the user to verify or change thetransmitter’s operating frequency or audio input level,and lock or unlock the front panel controls withouttransmitting any signals. Standby Mode can only beinvoked from a power off condition.Quickly press and release both the AUDIO and FREQbuttons simultaneously to enter and exit this mode.Selecting the Compatibility ModeAll Digital Hybrid Wireless™ receivers are capable ofworking with the Lectrosonics SM transmitter. Byselecting the proper compatibility mode, the SM willalso work with 200 Series, 100 Series and IFB analogreceivers, plus some other analog wireless receivers(contact the factory for details). Setting the Compatibil-ity Mode of the transmitter to match the receiver iseasily done via the Control Panel.Note: RF transmission is prevented while selectingCompatibility Modes. Also, the SM exits theCompatibility Mode screen to Standby Mode. (SeeStandby Mode, this section.)Note: The unit comes from the factory configuredas a 400 Series transmitter.1) Set the receiver’s audio controls to minimum.2) Power up the SM and observe the Boot Sequence.If the Compatibility Mode for the SM does notmatch the corresponding receiver, then power offthe SM transmitter.3) From a power off condition, hold down the Uparrow, then simultaneously press the AUDIO andFREQ buttons.4) The LCD will display thecurrent Compatibility Mode.Use the Up or Down arrowbuttons to reset the Com-patibility Mode to match thecorresponding receiver.The following Compatibility Modes are available:• 100 Series mode: CP 100• 200 Series mode: CP 200• Mode 3 (Contact dealer for details): CP 3• 400 Series mode: CP 400• IFB Series mode: CP IFB• Mode 6 (Contact dealer for details): CP 65) The Compatibility Mode selected in Step 4 will bethe current Compatibility Mode until reset using thisprocedure. Pressing the AUDIO or FREQ exits intoStandby Mode. To power off from the compatibilitymode screen, press AUDIO and FREQ together.Power Up and Boot Sequence1) Ensure that a good battery is installed in the unit.(See Battery Installation.)2) Simultaneously press and hold the AUDIO andFREQ buttons until the Power On Boot Sequence isinitiated. (See Power On Timer.) As the unit turnson, the Modulation LEDs and PWR LED all glowred, then green, and then they revert to normaloperation, i.e., the Modulation LEDs glow accordingto the audio level present at the Audio Input Jackand the PWR LED glows green (with a goodbattery).The LCD displays a bootup sequence whichconsists of four screens:Company Name: LectroFrequency Block (bXX) andFirmware Version (rX.X): b21r1.1 (typ)Compatibility Mode: CP 400 (typ)Audio: Aud 12 (typ)Power Down1) Simultaneously press andhold the AUDIO and FREQbuttons while observing thatthe word “Off” appears inthe LCD along with acounter.2) When the counter reaches “0”, the unit turns off.Note: If the AUDIO and FREQ buttons arereleased before the LCD goes blank at the end ofthe countdown, the unit will not turn off. Instead, itwill stay energized and the display will return to theprevious screen.Operating InstructionsCP 400400 Series or DigitalHybrid Wireless™Compatibility ModeOFF . . .3Initial Power Off TimerScreenAUDIO ButtonLCDFREQ ButtonModulationLEDsPWR LEDControl PanelUP Arrow
SMLECTROSONICS, INC.10Setting Transmitter Operating FrequencyThe Operating Frequency of the SM can be displayedeither in MHz or as a two-digit hexadecimal number.(See Controls and Functions, FREQ Button.) The SM’soperating frequency can be set with the unit in StandbyMode or powered up for normal operation. Use thefollowing procedure to change the Operating Frequencyof the SM transmitter:1) If the LCD is displaying something other than theFrequency Screen, press the FREQ button on theSM Control Panel to enter this screen.Note: The default display is in MHz. Pressing theFREQ button again displays the operatingfrequency as a two-digit hexadecimal number thatcorresponds the equivalent LectrosonicsFrequency Switch Setting.2) While holding the FREQ button, use the Up orDown arrow buttons to move the operating fre-quency up or down in 100 kHz increments from thecurrent setting.Note: The operating frequency displayed on theLCD wraps as it reaches the upper or lower end ofits range. Thus, if you intend to move theoperating frequency from the lower end of therange to the upper end, it may be faster to do thisby using the Down arrow until the frequency wrapsto the upper end.Most Lectrosonics receiversindicate the operatingfrequency both in MHz andas a two digit hexadecimalnumber. This conforms tothe Lectrosonics tradition ofsetting the operatingfrequency using two 16-position rotary switches.The SM offers the ability toset the operating frequencyin a similar manner. Pressing the FREQ buttonwhile the LCD displays the operating frequency inMHz will change the display to show the equivalenttwo-digit hexadecimal frequency select switchsetting. Simply use the Up or Down arrow toincrease or decrease the operating frequency.Attaching a Microphone and Adjusting GainThe front panel Modulation LEDs indicate limiter activity.(See chart below.) Once set, the transmitter’s audiolevel setting should not be used to control the volumeof your sound system or recorder levels. This gainadjustment matches the transmitter gain with themicrophone’s output level, the user’s voice level and themicrophone’s position. The audio input level can be setwith the unit in Standby Mode or powered up for normaloperation.Signal Level -20 LED -10 LEDLess 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 GreenGreater than +10 db Red RedNote: Different voices will usually require differentsettings of the AUDIO control, so check thisadjustment as each new person uses the system.If several different people will be using thetransmitter and there is not time to make theadjustment for each individual, adjust it for theloudest voice.1) With the SM powered off, insert the microphoneplug into the Audio Input Jack, aligning the pins andensuring that the connector locks.2) Place the SM in Standby Mode, or if the unit is to bepowered up and adjusted, mute the main soundsystem prior to powering up the transmitter.3) Position the microphone in the location where it willbe used in actual operation.4) Observe the SM Modulation LEDs while speakingor singing into the microphone at the same voicelevel that will be used during the program. Whileholding the AUDIO button, press the Up or Downarrow buttons until the both the -20 and -10 LEDsglow green, with the -10 LED occasionally flickeringred (-10 dB to +0 dB Signal Level as shown in thechart below with only occasional forays into the +0dB to +10 dB range).Note: Setting the audio level too high reduces thedynamic range of if the audio signal. Setting theaudio level too low may cause hiss and noise inthe audio.5) If the unit was set up in Standby Mode, it will benecessary to power up the SM and adjust theremaining components of the audio system prior touse.CH 2CFrequency displayed astwo-digit hexadecimalnumber644.400Frequency displayed inMHzAUDIO ButtonLCDFREQ ButtonModulationLEDsPWR LEDControl PanelUP Arrow
Super-Minature Belt Pack TransmitterRio Rancho, NM 11LocControl Panel LockedLocking or Unlocking the Control PanelThe Lock mode protects the transmitter from accidentalchanges to its settings.1. Ensure the SM setup is complete (operatingfrequency, audio level, Compatibility Mode, sensitiv-ity to remote control).2. Simultaneously press boththe Up and Down arrowbuttons to start the Locktimer. When the timerreaches zero, “Loc” isdisplayed and the controls are locked.Important: Once the transmitter is locked, itcannot be unlocked or powered off using thebuttons. The only ways to unlock a lockedtransmitter are to remove the battery or unlockit via the remote control. The remote controlwill work only if the transmitter was previsoulyconfigured to respond to the remote control.Lock mode does not persist when the power isoff.
SMLECTROSONICS, INC.12PIN54321SHIELD (GND)AUDIOLine LevelNormal Hookup12345TA 5 FPLUGPIN54321AUDIOLine LevelMore Headroom(20 dB)12345TA 5 FPLUG20kSHIELD (GND)Microphone RF BypassingWhen used on a wireless transmitter, the microphoneelement is in the proximity of the RF coming from thetransmitter. The nature of electret microphones makesthem sensitive to RF, which can cause problems withthe microphone/transmitter compatibility. If the electretmicrophone is not designed properly for use withwireless transmitters, it may be necessary to install achip capacitor in the mic capsule or connector to blockthe RF from entering the electret capsule.Some mics require RF protection to keep the radiosignal from affecting the capsule, even though thetransmitter input circuitry is already RF bypassed (seeschematic diagram).If the mic is wired as directed, and you are havingdifficulty with squealing, high noise, or poor frequencyresponse; RF is likely to be the cause.The best RF protection is accomplished by installing RFbypass capacitors at the mic capsule. If this is notpossible, or if you are still having problems, capacitorscan be installed on the mic pins inside the TA5F con-nector housing.Install the capacitors as follows: Use 330 pF capacitors.Capacitors are available from Lectrosonics. Pleasespecify the part number for the desired lead style.Leaded capacitors: P/N 15117Leadless capacitors: P/N SCC330PAll Lectrosonics lavaliere mics are already bypassedand do not need any additional capacitors installed forproper operation.Line Level SignalsThe normal hookup forline level signals is:Signal Hot to pin 5,Signal Gnd to pin 1and pin 4 jumped topin 1. This allowssignal levels up to 6VRMS to be appliedwithout limiting.If more headroom isneeded, insert a 20 kresistor in series with pin 5. Put this resistor inside theTA5F connector to minimize noise pickup.The wiring diagrams included in this section representthe basic wiring necessary for the most common typesof microphones and other audio inputs. Some micro-phones may require extra jumpers or a slight variationon the diagrams shown.It’s virtually impossible to keep completely up to date onchanges that other manufacturers make to their products.It is possible that you may encounter a microphone thatdiffers from these instructions. If this occurs please callour toll-free number listed under Service and Repair inthis manual or visit our web site at:http://www.lectrosonics.comThe Audio Input Jack for the SM is wired as shownbelow:PIN 1 Shield (ground) for positive biased electretlavaliere microphones. Shield (ground) fordynamic microphones and line level inputs.PIN 2 Bias voltage source for positive biased electretlavaliere microphones.PIN 3 Low impedance microphone level input fordynamic microphones. Also accepts hand-heldelectret microphones provided the microphonehas its own built-in battery.PIN 4 Bias voltage selector for Pin 3. Pin 3 voltage (0,2 or 4 volts) depends on Pin 4 connection.Pin 4 tied to Pin 1: 0 VPin 4 Open: 2 VPin 4 to Pin 2: 4 VPIN 5 High impedance, line level input for tape decks,mixer outputs, musical instruments, etc.5-Pin Input Jack Wiring3 WIRE MIC2 WIRE MICCAPSULE CAPSULESHIELDAUDIOSHIELDAUDIOBIASAlternate locations for bypass capacitorsTA5FCONNECTORTA5FCONNECTORPreferred locations for bypass capacitorsSM Equivalent Input Circuit Wiring10k1k54321To Vir t ual GroundAudio AmplifierBIASMICBIAS SELECTLINE INGND+30uF+6 VDCServo BiasPin 4 to Pin 1 = 0 V Pin 4 Open = 2 VPin 4 to Pin 2 = 4 V+To Limiter Control30uF750 Ohm100 Ohm2.7K200 Ohm+3.3uF100 OhmAudio Input Jack
Super-Minature Belt Pack TransmitterRio Rancho, NM 13Wiring Hookups for Different SourcesCompatible with SM and other Lectrosonics Transmitters:Works with SM Only:In addition to the wiring hookups illustrated below,Lectrosonics makes a number of cables and adaptersfor other situations such as connecting musical instru-ments (guitars, bass guitars, etc.) to the transmitter.These cables can be found in our UHF or Accessoriescatalogs. Visit www.lectrosonics.com, or contact thefactory for more information.he most radical change is that pin 4 is now a voltageselector pin. The diagrams in the section labeled “Workswith SM only” are specific to the SM transmitter andmake wiring a Countryman B6 or E6 or a three wiremicrophone such as a COS-11 very quick and easy.However, these wirings won’t work with older Lec-trosonics transmitters such as the UM400, UM200, etc.If you need the two wire Countryman B6 or any threewire mic to work with both older transmitters as well aswith the SM go to the section below, labeled, “Compat-ible with SM and other Lectrosonics Transmitters.”Sanken Cos-11 microphones, the Lectrosonics M150and other three wire microphones to be used with theSM will require new wiring. If the wiring is not changed,they will have much higher output than usual and extradistortion at high levels. The reason is that the sourcefollower wiring used with the UM200 and UM400 seriesis not compatible with the SM virtual ground input. Thesecond diagram in the “Compatible with SM and otherLectrosonics Transmitters” section shows a compatiblewiring that will work with all 5-Pin Lectrosonics transmit-ters. This wiring converts the three-wire microphone toa two wire system without changing the audio quality.(The microphone polarity will be reversed so you maywant to enable the phase switch on the Lectrosonicsreceiver.) This wiring is electrically equivalent to theeasy wiring in the “Works with SM only” section.All two-wire mics (except the Countryman B6 and E6)such as the MKE-2 and the Lectro M152 will work withthe SM with no changes. The two wire setup is shownin the third diagram in the “Compatible with SM andother Lectrosonics Transmitters” section.
SMLECTROSONICS, INC.14Before going through the following chart, be sure that you have a good battery in the transmitter. It is important thatyou follow these steps in the sequence listed.SYMPTOM POSSIBLE CAUSETRANSMITTER PWR LED OFF 1) Battery is inserted backwards or dead.2) Transmitter not powered up. (See Operating Instructions,Power UP and Boot Sequence.)TRANSMITTER PWR LED BLINKS GREEN EVERY FEW SECONDS, TRANSMITTERDOES NOT RESPOND OTHERWISE 1) Transmitter has been put to sleep by the remote control.Either use the remote control to wake it up again or removeand reinsert the transmitter’s battery.NO TRANSMITTER MODULATION LEDs 1) Gain control set to minimum.2) Battery is dead or installed backwards. Check PWR LED.3) Mic capsule is damaged or malfunctioning.4) Mic cable damaged or mis-wired.RECEIVER RF INDICATOR OFF 1) Transmitter not turned on, or is in Standby Mode.2) Transmitter battery is dead.3) Receiver antenna missing or improperly positioned.4) Transmitter and receiver not on same frequency.Check switches/display on transmitter and receiver.5) Transmitter and receiver not on same frequency block.6) Operating range is too great.7) Defective transmitter antenna.NO SOUND (OR LOW SOUND LEVEL), RECEIVER INDICATES PROPER AUDIO MODULATION1) Receiver output level set too low.2) Receiver output disconnected, or cable defective or mis-wired.3) Sound system or recorder input is turned down.DISTORTED SOUND 1) Transmitter gain (audio level) is far too high. Check SMModulation LEDs and receiver audio levels as SM is being used.2) Receiver output may be mis-matched with the sound system orrecorder input. Adjust output level on receiver to the correct levelfor the recorder, mixer or sound system. (Use the receiver’s Tonefunction to check level.)3) Excessive wind noise or breath “pops.” Reposition microphoneand/or use a larger windscreen.4) Transmitter is not set to same frequency as receiver. Check thatoperating frequency on receiver and transmitter match.5) Receiver/Transmitter Compatibility Mode mismatched.Troubleshooting
Super-Minature Belt Pack TransmitterRio Rancho, NM 15SYMPTOM POSSIBLE CAUSEHISS AND NOISE -- AUDIBLE DROPOUTS 1) Transmitter gain (audio level) far too low.2) Receiver antenna missing or obstructed.3) Transmitter antenna missing.4) Operating range too great.5) Signal interference. Turn off transmitter. If receiver’s signalstrength indicator does not drop to nearly zero, this indicates aninterferring signal may be the problem.Try a different operating frequency.EXCESSIVE FEEDBACK 1) Transmitter gain (audio level) too high. Check gain adjustmentand/or reduce receiver output level.2) Talent standing too close to speaker system.3) Mic is too far from user’s mouth.“Loc” APPEARS IN DISPLAY WHEN ANY BUTTON IS PRESSED1) Control Panel is locked. (See Operating Instructions, Lockingand Unlocking the Control Panel.)“Hold” APPEARS IN DISPLAY WHEN ARROW BUTTONS ARE PRESSED1) Reminder that it is necessary to hold down the AUDIO or FREQbutton while adjusting the audio gain or frequency settings.“PLL” APPEARS IN DISPLAY 1) Indication that the PLL is not locked. This is a serious conditionthat requires factory repair. It may be possible to operate onanother frequency far removed from the one that was selectedwhen the unlocked condition was indicated.TRANSMITTER WON’T RESPOND TO REMOTE CONTROL1. If LCD blinks “rc oFF”, transmitter has not be configuredto respond to the remote control. See “Remote Control Operation”on page 9 for instructions on how to configure.2. If LCD blinks “- - - - - -”, transmitter is already set asrequested by the remote control.3. If transmitter doesn’t not respond at all, try moving the remotecontrol closer to the microphone or increasing the remote control’sloudness setting.4. Be sure the transmitter has firmware v1.5 or newer(see section on Power On Boot Sequence).
SMLECTROSONICS, INC.16
Super-Minature Belt Pack TransmitterRio Rancho, NM 17The FCC requires that the following statement beincluded in this manual:This device complies with FCC radiation exposure limitsas set forth for an uncontrolled environment. This deviceshould be installed and operated so that its antenna(s)are not co-located or operating in conjunction with anyother antenna or transmitter.Input impedance:Dynamic mic: 300 OhmsElectret lavaliere: Input is virtual ground with servo adjustedconstant current biasLine level: 2.7 k OhmsInput limiter: Soft limiter, 30 dB rangeBias voltages: Fixed 5 V at up to 5 mASelectable 2 V or 4 V servo bias for anyelectret lavaliere.Gain control range: 40 dB; panel mounted membrane switchesModulation indicators: Dual bicolor LEDs indicate modulation of–20, -10, 0, +10 dB referenced tofull modulation.Low frequency roll-off: –18 dB/octave; 70 HzControls: Control panel with LCD and fourmembrane switches.Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The audio isdeliberately rolled off at 70 Hz using a18 dB/octave filter. This filter cannot bedisabled.)Signal to Noise Ratio (dB):(overall system, 400 Series mode)Total Harmonic Distortion: 0.2% typical (400 Series mode)Audio Input Jack: Switchcraft 5-pin locking (TA5F)Antenna: Flexible, unbreakable steel cable.Batteries: 1.5 Volt AA lithium or NiMH recommendedBattery Life: SM: 1.5 hours (alkaline); 5.5 hours (lithium),4 hours with 2500 mAh NiMHSMD: 5.75 hours (alkaline); 14.25 hours (lithium),8.5 hours with 2500 mAh NiMHSMQ: 1.75 hours (alkaline); 7.5 hours (lithium),5 hours with 2500 mAh NiMHWeight: SM: 2.7 oz.. (75.9 grams) with lithium batterySMD/Q: 3.7 oz.. (105 grams) with lithium batteriesOverall Dimensions:SM: 2.3 x 1.8 x 0.64 inches(not including microphone)58 x 46 x 16 mm(not including microphone)SMD/Q: 2.3 x 2.4 x 0.64 inches(not including microphone)58 x 60 x 16 mm(not including microphone)Emission Designator: 180KFE3Specifications subject to change without notice.Operating frequencies:Block 21 537.600 - 563.100Block 22 563.200 - 588.700Block 23 588.800 - 607.900 and 614.100 - 614.300Block 24 614.400 - 639.900Block 25 640.000 - 665.500Block 26 665.600 - 691.100Block 27 691.200 - 716.700Block 28 716.800 - 742.300Block 29 742.400 - 767.900Block 30 768.000 - 793.500Block 31 793.600 - 819.100Block 32 819.200 - 844.700Block 33 844.800 - 865.000Block 37 944.100 - 951.900(Not all frequencies are usable in some countries)Frequency range: 256 frequencies in 100 kHz stepsfor one 25.5 MHz wide blockChannel Spacing: 100 kHzFrequency selection: Control panel mounted membrane switchesRF Power output: SM: 100 mW (nominal)SMD: 100 mW (nominal)SMQ: 250 mW (nominal)Compatibility Modes (6) Digital Hybrid Wireless™ (400 Series),200 Series, 100 Series, Mode 3(other analog), Mode 6, and IFBPilot tone: 25 to 32 kHz; 5 kHz deviation(in 400 Series Mode)Frequency stability: ± 0.002%Deviation: ± 75 kHz max. (in 400 Series Mode)Spurious radiation: 60 dB below carrierEquivalent input noise: –125 dBV, A-weightedInput level:If set for dynamic mic: 0.5 mV to 50 mV before limiting.Greater than 1 V with limiting.If set for electret lavaliere mic: 1.7 uA to 170 uA before limiting.Greater than 5000 uA (5 mA) with limiting.Line level input: 5.0 mV to 6 V before limiting.Greater than 15 V with limiting.Specifications and FeaturesNote: The dual envelope “soft”limiter provides exceptionally goodhandling of transients using variableattack and release time constants. Once activated, the limiter compresses 30+ dB oftransmitter input range into 4.5 dB of receiver output range, thus reducing the measuredfigure for SNR without limiting by 4.5 dBSmartNR No Limiting w/LimitingOFF 103.5 108.5NORMAL 107.0 111.5FULL 108.5 113.0For body worn operation, this SM Belt-Pack Transmitterhas been tested and meets the FCC RF exposureguidelines when used with the Lectrosonics accesso-ries supplied or designated for this product. Use ofother accessories may not ensure compliance with FCCRF exposure guidelines. Contact Lectrosonics if youhave any questions or need more information about RFexposure using this product.
SMLECTROSONICS, INC.18
Super-Minature Belt Pack TransmitterRio Rancho, NM 19Service and RepairIf your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipmentneeds repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnect-ing 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 shopattempt anything other than the simplest repair. If the repair is more complicated than a broken wire or loose connec-tion, send the unit to the factory for repair and service. Don’t attempt to adjust any controls inside the units. Once setat 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 and staffed to quickly repair your equipment. In warranty repairsare made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a modestflat rate plus parts and shipping. Since it takes almost as much time and effort to determine what is wrong as it doesto make the repair, there is a charge for an exact quotation. We will be happy to quote approximate charges by phonefor out-of-warranty repairs.Returning Units for RepairFor timely service, please follow the steps below:A. DO NOT return equipment to the factory for repair without first contacting us by letter or by phone. We need toknow the nature of the problem, the model number and the serial number of the equipment. We also need aphone 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 speedyour repair through our receiving and repair departments. The return authorization number must be clearly shownon 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 theproper packing materials. UPS is usually the best way to ship the units. Heavy units should be “double-boxed” forsafe transport.D. We also strongly recommend that you insure the equipment, since we cannot be responsible for loss of or dam-age to equipment that you ship. Of course, we insure the equipment when we ship it back to you.Mailing address: Shipping address: Telephone:Lectrosonics, Inc. Lectrosonics, Inc. (505) 892-4501PO Box 15900 581 Laser Rd. (800) 821-1121 Toll-freeRio Rancho, NM 87174 Rio Rancho, NM 87124 (505) 892-6243 FaxUSA USAWeb: E-mail:www.lectrosonics.com sales@lectrosonics.com
February 3, 2006581 Laser Road NE • Rio Rancho, NM 87124 USA • www.lectrosonics.com(505) 892-4501 • (800) 821-1121 • fax (505) 892-6243 • sales@lectrosonics.comLIMITED ONE YEAR WARRANTYThe 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. 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 items 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.This warranty gives you specific legal rights. You may have additional legal rights which vary from state to state.

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