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INSTRUCTION MANUAL Super Miniature Variable Power Transmitters With Digital Hybrid Wireless® TechnologyUS Patent 7,225,135 SMQV Dual Battery Model Fill in for your records: Rio Rancho, NM, USA Super-Minature Belt Pack Transmitter
General Technical Description The voltage and current requirements of the wide vari- The Digital Hybrid design results in a signal-to-noise ratio ety of electret microphones used in professional appli- high enough to preclude the need for conventional pre- cations has caused confusion and compromises in the emphasis (HF boost) in the transmitter and de-emphasis wiring needed for wireless transmitters. To address this (HF rol off) in the receiver. This eliminates the potential problem, the unique Servo Bias input circuit provides an for distortion of signals with abundant high-frequency automatically regulated voltage over a very wide range of current for compatibility with all microphones.
Low Frequency Roll-Off Digital Hybrid Wireless® Technology The low frequency rol -off can be set for a 3 dB down All wireless links suffer from channel noise to some de- point at 35, 50, 70, 100, 120 and 150 Hz to control sub- gree, and all wireless microphone systems seek to mini- sonic and very low frequency audio content in the au- mize the impact of that noise on the desired signal. Con- dio. The actual roll-off frequency will vary slightly depend- ventional analog systems use compandors for enhanced ing upon the low frequency response of the microphone.
dynamic range, at the cost of subtle artifacts (typical y Excessive low frequency content can drive the transmit- "pumping" and "breathing"). Wholly digital systems defeat ter into limiting, or in the case of high level sound sys- the noise by sending the audio information in digital form, tems, can even cause damage to loudspeaker systems. at the cost of some combination of power, bandwidth and The roll-off is normally adjusted by ear while listening resistance to interference.
as the system is operating.
Digital Hybrid systems overcome channel noise in a dramatically new way, digitally encoding the audio in the transmitter and decoding it in the receiver, yet still send- A DSP-controlled analog audio limiter is employed be- ing the encoded information via an analog FM wireless fore the A-D converter. The limiter has a range of more link. This proprietary algorithm is not a digital imple- than 30 dB for excellent overload protection. A dual re- mentation of an analog compandor but a technique that lease envelope makes the limiter acoustically transpar- can be accomplished only in the digital domain, even ent while maintaining low distortion. It can be thought of though the inputs and outputs are analog.
as two limiters in series, a fast attack and release limiter Because it uses an analog FM link, the Digital Hybrid followed by a slow attack and release limiter. The limiter system enjoys all the benefits of conventional FM wire- recovers quickly from brief transients, with no audible less systems and it does away with the analog compan- side effects, and also recovers slowly from sustained dor and its artifacts.
high levels to keep audio distortion low while preserving short term dynamics.
Variable 1.8 - 4v Rio Rancho, NM
SMV Series
Signal Encoding and Pilot Tone Battery Options and Operating Time In addition to controlling the limiter, the DSP also en- Switching power supplies convert regulated battery volt- codes the digitized audio from the A/D converter and ages to operate various circuit stages with maximum adds an ultrasonic pilot tone to control the squelch in the receiver. A pilot tone squelch system provides a reli- The firmware "remembers" the power status when a able method of keeping a receiver output muted (audio battery fails, so the transmitter will be turned on auto- mute) even in the presence of significant interference. matically when the battery is replaced and the previous When the system is operating in the hybrid mode, a dif- settings will be enabled.
ferent pilot tone frequency is generated for each carrier frequency to prevent inadvertent squelch problems in Lectrosonics established a "block" numbering system Microprocessor Control years ago to organize the range of frequencies avail- able from the low end at 470 MHz band to the upper A microprocessor monitors user command inputs from end at 952 MHz. Each block (except 944) includes 256 the control panel buttons and numerous other internal frequencies in 100 kHz steps, which is the maximum signals. It works intimately with the DSP to ensure the switching range of the transmitters. Block 944 is a spe- audio is encoded according to the selected Compatibil- cial band between 944 and 952 MHz.
ity Mode and that the correct pilot tone is added to the encoded signal.
Compatibility Modes The RF output circuit includes a one way circulator/iso- lator using a magnetically polarized ferrite. This device SM transmitters are designed to operate with Lectro- greatly reduces RF intermodulation produced when sonics Digital Hybrid receivers and will yield the best multiple transmitters are used in close proximity to one performance when doing so, however, due to the flex- another (several feet apart). The isolator also provides ibility of digital signal processing, the transmitter can additional RF output stage protection against static also operate in various compatibility modes for use with Lectrosonics 200 Series, Lectrosonics 100 Series, IFB and certain non-Lectrosonics receivers. Contact the Lectrosonics sales department for more information about non-Lectrosonics receivers.
The control panel includes four membrane switches and an LCD screen to adjust the operational settings. Multi- color LEDs are used to indicate audio signal levels for accurate gain adjustment and for battery status.
Wide-Band Deviation ±75 kHz deviation improves the signal to noise ratio and audio dynamic range of a wireless system dramatically, compared to other designs that use ±30 kHz to 40 kHz deviation. Wide deviation combined with a high powered transmitters makes a significant improvement in signal to noise ratio and operating range.
Variable Power Output This advanced feature allows the operator to optimize the transmitter for maximum battery life, or for maximum operating range. Power output is selected using the LCD in a setup mode while the RF output of the trans- mitter is turned off.
Super-Minature Belt Pack Transmitter
Controls and Functions Modulation
Proper input gain adjustment is critical to ensure the Compartment
best audio quality. Two bicolor LEDs will glow either red Cover Plate
or green to accurately indicate modulation levels. The input circuitry includes a wide range DSP controlled limiter to prevent distortion at high input levels.
It is important to set the gain (audio level) high enough Input Jack
to achieve full modulation during louder peaks in the audio. The limiter can handle over 30 dB of level above Compartment
full modulation, so with an optimum setting, the LEDs Thumb Screw
DOWN Arrow
will flash red during use. If the LEDs never flash red, the gain is too low. In the table below, +0 dB indicates full AUDIO Button
FREQ Button
Signal Level
The LCD is a numeric-type Liquid Crystal Display with Less than -20 dB screens for adjusting power, frequency, audio level and -20 dB to -10 dB low frequency audio roll-off. The transmitter can be powered up with or without the RF output turned on. A countdown appears in the LCD when powering on and off, allowing the transmitter to be turned on without RF Greater than +10 db for adjustments, and to prevent accidentally turning it off with momentary button presses.
The AUDIO button is used to display the audio level and low frequency roll-off settings. The UP and DOWN ar- The PWR LED glows green when the battery is good. rows adjust the values.
The color changes to red when there is about 30 min- utes of operation left with the recommended lithium bat- The AUDIO button is also used with the FREQ button to tery. When the LED begins to blink red, there are only a enter standby mode and to power the transmitter on or off.
few minutes of life.
The exact point at which the LED turns red will vary with battery brand and condition, temperature and cur- The FREQ Button displays the selected operating rent drain. The LED is intended to simply catch your frequency and toggles the LCD between displaying attention, not to be an exact indicator of remaining time. the actual operating frequency in MHz and a two-digit hexadecimal number that corresponds to the equivalent Lectrosonics Frequency Switch Setting.
The Up and Down arrow buttons are used to select the values on the various setup screens and to lock out the control panel.
The transmitter uses a whip antenna with a flexible wo- A weak battery will sometimes cause the PWR LED to ven, galvanized steel mesh cable and a standard SMA glow green immediately after the transmitter is turned on, but will soon discharge to the point where the LED will turn red or the unit will turn off completely.
The Servo Bias input circuitry accommodates virtually every lavaliere, handheld or shotgun microphone avail- able, plus line level signals.
Battery Compartment and Thumb Screw The large knurled thumbscrew is used to release or secure the Battery Compartment Cover Plate.
Rio Rancho, NM
SMV Series
Battery Installation Attaching and Removing We recommend using lithium batteries for longest life. Refer to the battery life listings in the specifications.
The flexible sleeve over the 5-pin plug on the micro- Batteries are inserted (+) end first on both single and phone helps prevent dust and moisture from getting into double battery models.
the input jack. The flange around the rim of the connec- tor on the transmitter helps retain the sleeve after it is To install new batteries: 1. Turn the Battery Cover Plate Thumbscrew coun- The following procedure simplifies the attachment and terclockwise a few turns until the door will rotate. If removal of the microphone to assure the sleeve is you continue to rotate the thumbscrew, the door will seated securely.
separate from the transmitter.
Align the pins on the plug and jack and insert the con- 2. Insert the new batteries into the housing. The posi- tive (+) battery terminal goes into the transmitter 3. Align the Battery Cover Plate and tighten the Bat- If the sleeve is pulled down tery Cover Plate Thumbscrew. Apply pressure to the and covering the connector, cover plate to press the batteries into the housing squeeze the end of the sleeve while rotating the thumbscrew to tighten the cover so you can feel the connector plate flush to the housing.
inside and press it into the jack until it latches.
Polarity
engraved into
Pinch and squeeze the sleeve near the flange and work it down with a kneading motion over the flange all the way covered vent
around until it stays in place flush with the housing. Pull on Pinch and squeeze the sleeve on this end the connector to make sure it to work it down over the flange. is firmly latched.
To remove the connector, pull the sleeve back to expose the black release button. Press the button to unlatch the plug.
Release button Two battery
Super-Minature Belt Pack Transmitter
Operating Instructions LCD Backlight Settings The LCD backlight can be set to turn off after either 5 Power Up and Boot Sequence minutes or 30 seconds or stay on continuously. Hold the UP arrow in while powering up the unit to enter 1) Ensure that good batteries are installed in the unit.
the setup screen. Press the AUDIO button repeatedly 2) Simultaneously press and hold the AUDIO and
to step through the setup items to reach the backlight FREQ buttons until the Power On Boot Sequence is settings screen. Use the UP or DOWN arrow button to select the desired setting.
The count will progress from 1 through 3 and the unit will then power up with the RF output turned on. During this turn on sequence, the modulation and power LEDs all glow red, then green, and then revert to normal operation.
The LCD displays a bootup sequence which con- sists of four screens: Selecting the Compatibility Mode Frequency Block (bXX) and Firmware Version (rX.X): The transmitter will work with 200 Series, 100 Series and IFB analog receivers, plus Compatibility Mode: 400 Series or Digital
some other analog wireless Hybrid Wireless™
receivers in addition to the native digital hybrid mode.
automatically enters the Standby Mode when Initial Power Off
Timer Screen
1) Set the receiver's audio controls to minimum.
1) Simultaneously press and hold the AUDIO and
FREQ buttons while observing that the word "Off" 2) From a power off condition, hold down the Up appears in the LCD along with a counter.
arrow, then simultaneously press the AUDIO and FREQ buttons.
2) When the counter reaches "0", the unit turns off.
3) Press either AUDIO or
Note: If the AUDIO and FREQ buttons are FREQ button to select the released before the LCD goes blank at the end of compatibility screen and the countdown, the unit will not turn off. Instead, it use the Up and Down ar- will stay energized and the display will return to the rows to select the desired previous screen.
Power Restore Screens
The following Compatibility Modes are available: With the power turned off, pressing the AUDIO and • 100 Series mode: FREQ buttons briefly places • 200 Series mode: the unit in Standby Mode. In this mode the RF output is (contact the factory for details): CP 3 turned off so all setup adjustments can be made • 400 Series mode: without interfering with other systems operating in the • IFB Series mode: same location. The screen displays "rf OFF" to remind the user that the unit is not transmitting.
• Mode 6 (contact the factory for details): CP 6 While the unit is in the standby mode, access the setup 4) Press either AUDIO or FREQ button to select the
screens using the AUDIO and FREQ buttons and make power setting screen and use the Up and Down adjustments using the Up and Down arrows.
down arrows to select the desired level of power.
5) Simultaneously press the AUDIO and FREQ but-
tons to exit this mode and turn off the power. Rio Rancho, NM
SMV Series
If a remote control signal is detected but the transmitter is set to "rc oFF", the message "rc oFF" will be dis- The Audio screen is used to played briefly on the transmitter's LCD, to confirm that a adjust input gain from 0 to valid signal was received, but that the transmitter is not +44 dB, and the low fre- configured to respond to it. quency roll-off from 35 to 150 Hz. Repeatedly press- Functions available from the remote control are: ing the AUDIO button toggles back and forth between the two displays. Press and hold the AUDIO button and use the Up and Lock/Unlock Buttons Down arrows to make adjustments.
Sleep/Wake (power saving mode) In sleep mode, the transmitter uses only 20% of the normal amount of battery drain. Sleep mode can only be The Frequency Screen invoked with the remote control, and can only be revoked displays the operating with the remote control or by removing the battery. When frequency in MHz or as a in the sleep mode, the PWR LED blinks green every few two-digit hexadecimal seconds to indicate that the transmitter is asleep and not number that corresponds to the equivalent Lectrosonics Frequency Switch Setting. The RM is not included with SM Series transmitters. Repeatedly pressing the Several "Dweedle tones" can also be downloaded from FREQ button toggles between the two displays. Press and hold the FREQ button and use the Up and Down arrows to select the frequency. The dweedle tones can be played back through an MP3 Lock/Unlock Screen player, PDA, etc., and in most cases, will even work with walkie talkies. The tones will not work through the loud- Simultaneously pressing speakers of a sound system because the reflections and holding both the Up and and reverberation in the room will alter the tones.
Down arrow buttons during normal operation starts the Lock timer. The timer starts Configuring for Power Restore at three and counts down to zero. When the timer When using external power source through a battery reaches zero, the transmitter's controls are locked.
eliminator, Power Restore will return your transmitter to With the controls locked, the AUDIO and FREQ buttons settings it had before it was powered off. This eliminates can still be used to display current settings. Any attempt the need to power on through the unit itself.
to change a setting by pressing either the Up or Down 1) Press and hold the Down Arrow Button then power
arrow button will result in an on-screen Loc reminder on the transmitter by pressing the that the controls are locked. Remove the batteries to Audio and Freq buttons simultaneously.
unlock the control panel.
2) The LCD will display the status, either "rc ON" or "rc
Important: Once the transmitter is locked, it
OFF." Press "AUDIO" or "FREQ" key to scroll to the cannot be unlocked or powered off using the
"PbAc setup screen buttons. The only ways to unlock a locked
• PbAc 1 for power restore ON transmitter are to remove the battery or unlock it
via the RM remote control.
• PbAc 0 for power restore OFF Remote Control Operation 3) When power restore is set to ON, the unit will turn
on whenever power is present at the battery termi- The transmitters can be nals until the power is manually turned off with the configured to respond to control panel switches.
signals from the RM remote control unit or to ignore NOTE: The firmware "remembers" the power them. This setting is ac- status when a battery fails, so the transmitter will cessed by holding down the be turned on automatically when the battery is replaced and the previous settings will be enabled. Down arrow button while Remote Control Screens
Power Up and Boot Sequence powering the transmitter on. Use the arrow keys to tog- gle between "rc on" (remote control on) and "rc oFF" (remote control off). The default setting is "rc on." Super-Minature Belt Pack Transmitter
It is actually a good idea to turn the gain up to maxi- Setting Transmitter Operating Frequency mum and listen for distortion or compression to get a The frequency can be feel for how much headroom is available.
displayed either in MHz or Signal Level
as a two-digit hexadecimal number and can be set in Less than -20 dB the Standby Mode or when -20 dB to -10 dB the transmitter is powered up. The hexadecimal numbering system is unique to Lectrosonics where two Frequency displayed as
Greater than +10 db two-digit hexadecimal
alphanumeric characters correspond to the left and Note: Different voices will usually require different gain set- right switch settings on tings, so check this adjustment as each new person uses the earlier analog transmitters that had mechanical rotary system. If several different people will be using the transmitter and there is not time to make the adjustment for each indi- switches to adjust frequency.
vidual, adjust it for the loudest voice.
1) Press the FREQ button to select either the MHZ
1) With the transmitter powered off, plug in the mi-
screen or the hexadecimal screen.
crophone and make sure the connector is firmly 2) While holding the FREQ button, use the Up or
Down arrow buttons to move the operating fre- quency up or down in 100 kHz increments from the Warning: If the systems is powered up while
current setting.
connected to a live sound system, be careful
to turn the sound system level down first or
Note: The operating frequency displayed on the severe feedback can occur.
LCD wraps as it reaches the upper or lower end of 2) Place the transmitter in Standby Mode or turn it on
for normal use.
Most Lectrosonics receivers with an LCD interface 3) Position the microphone in the location where it will
indicate the operating frequency both in MHz and as a be used in actual operation.
two digit hexadecimal number. In many cases, it is more convenient to use the two charcter hexadecimal num- 4) Observe the Modulation LEDs while speaking or
bers rather than the six character frequency in MHz.
singing into the microphone at the same voice level that will be used during use. While holding the AU- Adjusting the Low Frequency Roll-off DIO button, press the UP or DOWN arrow buttons until the both the -20 and -10 LEDs glow green, Repeatedly press the AUDIO button until the LF roll-off with the -20 LED occasionally flickering red. This adjustment screen appears. Then press and hold the will maximize the signal to noise ratio of the system AUDIO button while selecting the desired roll-off fre- with full modulation and provide subtle limiting to quency with the UP and DOWN arrows.
prevent overload and audible compression.
5) If the unit was set up in Standby Mode, it will be
necessary to turn the transmitter off, then power it up again in normal operation so the RF output will The roll-off frequency can be set to 35, 50, 70, 100, 120 be on. Then the other components in the sound or recording system can be adjusted.
Adjusting Audio Level (Gain) Locking or Unlocking the Controls The control panel Modulation LEDs indicate the audio The Lock mode protects the level and limiter activity. Once set, the transmitter's transmitter from accidental audio level setting should not be used to control the
changes to its settings.
volume of your sound system or recorder levels. This Control Panel Locked
Simultaneously press both gain adjustment matches the transmitter gain with the the Up and Down arrow microphone's output level, the user's voice level and the buttons to start the countdown timer. When the timer position of the microphone. The audio input level (gain) reaches zero, "Loc" is displayed and the controls are is adjusted with the unit in the Standby Mode or while locked. Settings can be reviewed but not changed.
powered up while observing the LEDs.
Once the transmitter is locked, it cannot be unlocked or It is desirable to to set the gain so that some limiting powered off using the buttons. The only ways to unlock a occurs on louder peaks. The limiter is very transparent locked transmitter are to remove the battery or unlock it and its effect is not audible until the system is close to using the remote control. The remote control will work only overload. In other words, don't be shy about turning up if the transmitter was previously configured to respond to the remote control. The unit will always power up in "unlocked" mode.
Rio Rancho, NM
Super-Minature Belt Pack Transmitter
Microphone RF Bypassing Line Level Signals When used on a wireless transmitter, the microphone The normal hookup for line level signals is: Signal Hot element is in the proximity of the RF coming from the to pin 5, Signal Gnd to pin 1 and pin 4 jumped to pin 1. transmitter. The nature of electret microphones makes This allows signal levels up to 3V RMS to be applied them sensitive to RF, which can cause problems with without limiting.
the microphone/transmitter compatibility. If the electret microphone is not designed properly for use with wire- If more headroom is needed, insert a 20 k resistor in less transmitters, it may be necessary to install a chip series with pin 5. Put this resistor inside the TA5F con- capacitor in the mic capsule or connector to block the nector to minimize noise pickup.
RF from entering the electret capsule.
Some mics require RF protection to keep the radio signal from affecting the capsule, even though the transmitter input circuitry is already RF bypassed (see schematic diagram).
If the mic is wired as directed, and you are having dif- ficulty with squealing, high noise, or poor frequency response, RF is likely to be the cause.
The best RF protection is accomplished by installing RF bypass capacitors at 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 connector 2 WIRE MIC
3 WIRE MIC
Preferred locations for bypass capacitors Alternate locations for bypass capacitors Install the capacitors as follows: Use 330 pF capaci- tors. 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.
Rio Rancho, NM
SMV Series
TroubleshootingBefore going through the following chart, be sure that you have a good battery in the transmitter. It is important that you follow these steps in the sequence listed.
SYMPTOM TRANSMITTER 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, TRANSMITTER
DOES 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 remove and reinsert the transmitter's battery.
AUDIO LEVEL LEDs NOT LIGHTING
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 MODULATION
1) 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 audio level LEDs and receiver audio levels during use.
2) Receiver output 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. (Use the receiver's Tone function to check level.) 3) Transmitter is not set to same frequency as receiver. Check that operating frequency on receiver and transmitter match.
4) Receiver/Transmitter Compatibility Mode mismatched.
EXCESSIVE FEEDBACK
1) Transmitter gain (audio level) too high. Check gain adjustment and/or reduce receiver output level.
2) Talent standing too close to speaker system.
3) Mic is too far from user's mouth.
Super-Minature Belt Pack Transmitter
HISS AND NOISE -- AUDIBLE DROPOUTS
1) Transmitter gain (audio level) far too low.
2) Receiver antenna missing or obstructed.
3) Transmitter antenna broken or missing.
4) Operating range too great.
5) Signal interference. Turn off transmitter. If receiver's signal strength indicator does not drop to nearly zero, this indicates an interfering signal may be the problem.
Try a different operating frequency.
"Loc" APPEARS IN DISPLAY WHEN ANY BUTTON IS PRESSED
1) Control Panel is locked. (See Operating Instructions, Locking and Unlocking the Control Panel.) "Hold" APPEARS IN DISPLAY WHEN ARROW BUTTONS ARE PRESSED
1) Reminder that it is necessary to hold down the AUDIO or FREQ button to make adjustments to the audio gain or frequency settings.
"PLL" APPEARS IN DISPLAY
1) Indication that the PLL is not locked. This is a serious condition that requires factory repair. It may be possible to operate on another frequency far removed from the one that was selected when the condition was indicated.
TRANSMITTER WON'T RESPOND TO REMOTE CONTROL
1) If LCD blinks "rc oFF", transmitter has not been configured to respond to the remote control. See "Remote Control Operation" on page 7 for instructions on how to configure.
2) If LCD blinks "- - - - - -", transmitter is already set as requested by the remote control.
3) If transmitter does not respond at all, try moving the remote control closer to the microphone or increasing the remote control's loudness setting, or increasing the audio level on the transmitter.
4) Make sure volume of RM and proximity of microphone are sufficient to engage transmitter.
5) Make sure transmitter is not in Sleep mode.
RM Troubleshooting FREQUENCY CHANGES, BUT NOT TO DESIRED FREQUENCY
1) RM set on different block than transmitter in question. RM uses hex code to set frequency - set RM to proper frequency block, or use hex code method to change frequency.
Rio Rancho, NM
SMV Series
Specifications and Features
Operating frequencies:
Low frequency roll-off:
Adjustable from 35 to 150 Hz.
Block 470 470.100 - 495.600 Block 24 614.400 - 639.900 Block 19 486.400 - 511.900 Block 25 640.000 - 665.500 Block 20 512.000 - 537.500 Block 26 665.600 - 691.100 Block 21 537.600 - 563.100 Block 22 563.200 - 588.700 Block 23 588.800 - 607.900 614.100 - 614.300 Audio Frequency Response:
35 Hz to 20 kHz, +/-1 dB (The low frequency (Frequency usage varies by country) roll-off is adjustable - see graph above) Frequency range:
256 frequencies in 100 kHz steps Signal to Noise Ratio (dB):
for one 25.5 MHz wide block (overall system, 400 Series mode) OFF
Channel Spacing:
(Note: the dual envelope "soft" limiter provides exceptionally Frequency selection:
Control panel mounted membrane switches good handling of transients RF Power output:
Switchable; 50, 100 or 250 mW using variable attack and release time constants. The gradual onset of limiting in the design begins below full Compatibility Modes (6)
Digital Hybrid Wireless® (400 Series), modulation, which reduces the measured figure for SNR without limiting by 4.5 dB) 200 Series, 100 Series, Mode 3 , Mode 6, IFB Pilot tone:
25 to 32 kHz; 5 kHz deviation Total Harmonic Distortion:
0.2% typical (400 Series mode) (in 400 Series Mode) Audio Input Jack:
Switchcraft 5-pin locking (TA5F) Frequency stability:
Antenna: Flexible, unbreakable steel cable.
Deviation:
± 75 kHz max. (in 400 Series Mode) Batteries:
1.5 Volt AA lithium Spurious radiation:
60 dB below carrier Equivalent input noise:
–125 dBV, A-weighted Input level:
SMV 50 mW (1 AA): If set for dynamic mic:
0.5 mV to 50 mV before limiting. SMV 100 mW (1 AA): Greater than 1 V with limiting.
If set for electret lavaliere mic:
1.7 uA to 170 uA before limiting. SMV 250 mW (1 AA): Greater than 5000 uA (5 mA) with limiting.
SMQV 50 mW (2 AA): Line level input:
17 mV to 1.7 V before limiting. Greater than 50 V with limiting.
SMQV 100 mW (2 AA): SMQV 250 mW (2 AA): Dynamic mic:
Electret lavaliere:
Input is virtual ground with servo adjusted RM: 2.3 oz. (65.8 grams) with lithium battery constant current bias SMQV: 3.7 oz. (105 grams) with lithium batteries Line level:
Input limiter:
DSP Controlled Soft limiter, 30 dB range 2.3 x 1.8 x 0.64 inches SMV: 2.3 x 1.8 x 0.64 inches Bias voltages:
(not including microphone/lanyard) (not including microphone/lanyard) Selectable 2 V or 4 V servo bias for any electret lavaliere.
(not including microphone/lanyard) (not including microphone/lanyard) Gain control range:
44 dB; panel mounted membrane switches RM2: 2.125 x 1.25 x 1.125 inches SMQV: 2.3 x 2.4 x 0.64 inches (not including microphone/lanyard) (not including microphone) Modulation indicators:
Dual bicolor LEDs indicate modulation of –20, -10, 0, +10 dB referenced to (not including microphone/lanyard) (not including microphone) full modulation.
Controls:
Control panel with LCD and four membrane Emission Designator: 180KF3E
Specifications subject to change without notice. The FCC requires that the following statements be included in this manual for the SMV and SMQV: The FCC requires that the following statement be in- For body worn operation, this transmitter models has cluded in this manual for the RM: been tested and meets the FCC RF exposure guidelines This device complies with Part 15 of the FCC Rules. when used with the Lectrosonics accessories supplied or Operation is subject to the following two conditions: (1) This designated for this product. Use of other accessories may device may not cause harmful interference, and (2) this device not ensure compliance with FCC RF exposure guidelines. must accept any interference received, including interference Contact Lectrosonics if you have any questions or need more that may cause undesired operation. information about RF exposure using this product. This device complies with FCC radiation exposure limits as This device complies with Industry Canada radiation exposure set forth for an uncontrolled environment. This device should limits as set forth for a controlled "professional" use only. be installed and operated so that its antenna(s) are not co- located or operating in conjunction with any other antenna or transmitter.

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