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Manufacturer
Lectrosonics SMQV Super Miniature Transmitter Frequency 941 - 960 MHz
MPN: SMQV 941

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800.941.2446

Description

Lectrosonics SMQV super miniature transmitter, variable power output, pouch included, Freq Range 941 - 960 MHz

The SMV-941 series transmitters offer selectable output power of 50 or 100 mW. 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.
The transmitters offer hands free setup and adjustment using audible tones generated by a smart phone held close to the microphone. The transmitters can be put to sleep to conserve battery power during setup while the transmitters are buried deep inside costuming, then awakened for normal operation when the production begins. Other features include frequency and audio level adjustment and control lockout.
A water resistant control panel with LCD, membrane switches and multi-color LEDs make input gain adjustments, frequency and compatibility mode selection quick and accurate. The battery compartment uses AA batteries and is accessed through a rotating door.
A special vent in the battery door prevents a vacuum from being created inside the transmitter when it is moved from a warm, damp environment and stored in a cool place. The vent allows air to pass as the pressure equalizes, but blocks the passage of moisture.
• Selectable 50/100/250 mW output power
• Single and dual battery models
• Water resistant seals for use in damp
environments
• LCD interface with lockout option
• Compatibility mode for use with
Lectrosonics IFB receivers
• Servo Bias input circuitry
• IR (infrared) port for fast setup
• Remote controlled “dweedle tones”
(audio tone setup control)
The input section features the unique Lectrosonics servo bias input circuitry with a standard TA5M jack for use with electret lavaliere mics, dynamic mics, or line level signals. A DSP-controlled analog audio limiter is employed ahead of the first mic preamp to protect the entire audio chain from overload. The limiter has a range of more than 30 dB for excellent overload protection and a dual release envelope that makes the limiter acoustically transparent while maintaining low distortion. The limiter recovers quickly from brief transient peaks, and handles longer lasting peaks with no distortion.
The housing is machined from a solid aluminum billet to provide an extremely lightweight and rugged package. The exterior of the housing is finished in a special non-corrosive electroless nickel plating that resists salt water exposure and perspiration. The finish is hardened to resist scratching.

The battery door rotates to open and close on the transmitters. A knurled knob is tightened to maintain pressure on the battery contacts. O-rings around the battery contacts block moisture and dust from entering the battery compartments.

Product Specification

Channel Spacing: Selectable; 25 or 100 kHz
Frequency selection: Control panel membrane switches
RF Power output: Switchable; 50 or 100 mW
Pilot tone: 27 to 32 kHz; 3 kHz deviation
(Digital Hybrid mode)
Frequency stability: ± 0.002%
Spurious radiation: Compliant with ETSI EN300 422-1 v1.4.2
Equivalent input noise: –125 dBV, A-weighted
Input level:
Dynamic mic: 0.5 mV to 50 mV before limiting
Greater than 1 V with limiting
Electret lavaliere mic: 1.7 uA to 170 uA before limiting.
Greater than 5000 uA (5 mA) with limiting.
Line level: 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
Input limiter: Soft limiter, 30 dB range
Bias voltages: • Fixed 5 V at up to 5 mA
• Selectable 2 V or 4 V servo bias
for electret lavaliere
Input gain control range: 44 dB in 1 dB steps
Modulation indicators: Dual bicolor LEDs indicate modulation of –20, -10, 0, +10 dB referenced to full modulation.
Controls: Control panel with LCD and four membrane switches.

Audio Performance (overall system):
Frequency Response: 35 Hz to 20 kHz, +/-1 dB
Low frequency roll-off: Adjustable from 35 to 150 Hz
THD: 0.2% (typ.) 100 Hz to 20 kHz

Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Flexible, unbreakable steel cable.
Batteries: 1.5 Volt AA lithium
Battery Life:
SMV-941 50 mW (1 AA): 7.25 hrs
SMV-941 100 mW (1 AA): 5.5 hrs
SMQV-941 50 mW (2 AA): 14.5 hrs
SMQV-941 100 mW (2 AA): 14 hrs
Weight: SMV: 2.7 oz.. (75.9 grams) with lithium battery
SMQV 3.7 oz.. (105 grams) with lithium batteries
Overall Dimensions: SMV: 2.3 x 1.8 x 0.64 inches (58 x 46 x 16 mm)
(not including microphone)
SMQV: 2.3 x 2.4 x 0.64 inches (58 x 60 x 16 mm
(not including microphone)
Emission Designator: 180KF3E
Specifications subject to change without notice.

Lectrosonics SMV -SMQV 94 Technical Datasheet

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