Super Miniature Wireless Microphone Transmitter
Wireless Microphones & Audio Processors
Lectrosonics : LECTROSONICS SMV
Description
The Lectrosonics SMV Super Miniature Wireless Microphone Transmitter incorporates Lectrosonics patented Digital Hybrid Wireless technology, in a package no bigger than a pager. The Lectrosonics SMV transmitter is miniature in size yet rugged enough to withstand rigorous daily use in the field or in studios.
To meet the demand for both extended operating range and extended battery life, the Lectrosonics SMV transmitters offer selectable output power of 100 or 250 mW. A third selection at 50 mW is provided for some theatrical applications, where the system design specifies lower transmitter power. The Lectrosonics SMV transmitter offers 256 user-selectable UHF frequencies. The Switchcraft TA5M audio input has user-calibrated 44 dB gain range, and accepts electret lavaliere mics, dynamic mics, or line level signals. A DSP-controlled analog audio limiter is employed before the A-D converter. The limiter has a range of more than 30 dB and a dual-release envelope, making the limiter transparent while maintaining low distortion.
Available Configurations Include:
Lectrosonics SMQV SUPER MINI TX, 50, 100, 250 mw, 2 AA, W/ POUCH, BKLT LCD
Features
LECTROSONICS SMV features include:
- Digital Hybrid Wireless™ Technology*
(U.S. Patent #7,225,135) - Variable, selectable power output:
- SMV: 50mW, 100mW, 250mW
- Membrane switch control panel with LCD display
- 256 synthesized UHF frequencies
- Wide input dynamic range
- DSP based pilot-tone signal
- Circulator/Isolator output stage
- Splash-proof, machined aluminum housing
- Non-corrosive, super-hard finish
Specifications
| Operating Frequency | 537.600 - 563.100 MHz |
| Frequency Range | 256 frequencies in 100 kHz steps for one 25.5 MHz wide block |
| Channel Spacing | 100 kHz |
| Frequency Selection | Control panel mounted membrane switches |
| RF Power Output | Switchable; 50, 100 or 250 mW |
| Compatibility Modes | Digital Hybrid Wireless® (400 Series), 200 Series, 100 Series, Mode 3 , Mode 6, IFB |
| Pilot 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 Emission | 60 dB below carrier |
| Equivalent Input Noise | -125 dBV, A-weighted |
| Input Level |
|
| Input Impedance |
|
| Limiter | DSP 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 Range | 44 dB; panel mounted membrane switches |
| Modulation | Dual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation |
| Controls | Control panel with LCD and four membrane switches |
| Low Frequency Roll-Off | Adjustable from 35 to 150 Hz |
| Audio Frequency Response | 35 Hz to 20 kHz, +/-1 dB |
| Signal to Noise Ratio | SmartNR Off:
|
| Total Harmonic Distortion | 0.2% typical (400 Series mode) |
| Audio Input Jack | Switchcraft 5-pin locking (TA5F) |
| Antenna | Flexible, unbreakable steel cable |
| Batteries | One 1.5 Volt AA lithium or rechargeable; NiMH recommended |
| Battery Life | 50 mW:
|
| Emission Standard | 180KF3E |
| Dimensions | 2.3 x 1.8 x 0.64" (58 x 46 x 16 mm) not including microphone/lanyard |
| Weight | 3.7 oz.(105 g) with lithium batteries |
Resources & Documents
| lectrosonics-smv.pdf | Datasheet |