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Manufacturer
Lectrosonics SMV Super Miniature Transmitter, Block 21
MPN: SMV Block21

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800.941.2446

Product Details

Lectrosonics SMV Super Miniature Transmitter, Variable power 50, 100 mW, with Pouch, Block 21

Description

To meet the demand for both extended operating range and extended battery life, the “V” series SM transmitters offer selectable output power ranging from 50, 100 and 250 mW on the single and dual battery model. With higher power output, the operating range is improved at the expense of battery life. When range is not an issue, the power can be reduced to extend the battery life. Both models are compatible with the LectroRM app for hands free setup and adjustment using audible tones delivered into the microphone from a mobile phone. The transmitter can be put to sleep to conserve battery power during setup while the transmitter is buried deep inside costuming, then awakened for normal operation when the production begins. Other features include frequency and audio level adjustment and control lockout.

Features: 

• Selectable output power to maximize battery life or operating range
• Ultra-lightweight, corrosion resistant housing
• Water resistant seals for use in damp environments
• LCD interface with lockout option
• Programmable compatibility modes for use with a wide variety of different receivers
• Servo Bias input circuitry with selectable voltage

Product Specification
Operating Frequency537.600 - 563.100 MHz
Frequency Range256 frequencies in 100 kHz steps for one 25.5 MHz wide block
Channel Spacing100 kHz
Frequency SelectionControl panel mounted membrane switches
RF Power OutputSwitchable; 50, 100 or 250 mW
Compatibility ModesDigital Hybrid Wireless® (400 Series), 200 Series, 100 Series, Mode 3 , Mode 6, IFB
Pilot Tone25 to 32 kHz; 5 kHz deviation (in 400 Series Mode)
Frequency Stability± 0.002%
Deviation± 75 kHz max. (in 400 Series Mode)
Spurious Emission60 dB below carrier
Equivalent Input Noise-125 dBV, A-weighted
Input 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: 17 mV to 1.7 V before limiting; greater than 50 V with limiting
Input Impedance
  • Dynamic mic: 300 Ohms
  • Electret lavaliere: input is virtual ground with servo adjusted constant current bias
  • Line level: 2.7 k Ohms
LimiterDSP Controlled Soft limiter, 30 dB range
Bias Voltage(s)Fixed 5 V at up to 5 mA; selectable 2 V or 4 V servo bias for any electret lavaliere
Gain Range44 dB; panel mounted membrane switches
ModulationDual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation
ControlsControl panel with LCD and four membrane switches
Low Frequency Roll-OffAdjustable from 35 to 150 Hz
Audio Frequency Response35 Hz to 20 kHz, +/-1 dB
Signal to Noise Ratio

SmartNR Off:

  • No Limiting: 103.5 dB
  • Limiting: 108 dB

SmartNR Normal:

  • No Limiting: 107 dB
  • Limiting: 111.5 dB

SmartNR Full:

  • 108.5 dB
  • 113 dB
Total Harmonic Distortion0.2% typical (400 Series mode)
Audio Input JackSwitchcraft 5-pin locking (TA5F)
AntennaFlexible, unbreakable steel cable
BatteriesOne 1.5 Volt AA lithium or rechargeable; NiMH recommended
Battery Life

50 mW:

  • Alkaline: 2 hrs
  • Lithium: 7.25 hrs
  • 2500 MA NiMH: 5 hrs

100 mW

  • Alkaline: 1.5 hrs
  • Lithium: 5.5 hrs
  • 2500 MA NiMH: 4 hrs

250 mW

  • Alkaline: not recommended
  • Lithium: 3 hrs
  • 2500 MA NiMH: 2.25 hrs
Emission Standard180KF3E
Dimensions2.3 x 1.8 x 0.64" / 58 x 46 x 16 mm not including microphone/lanyard
Weight2.7 oz / 75.9 g with lithium battery

Lectrosonics SMV Super Miniature Transmitter Technical Data

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