Lectrosonics SMDWB (B1: 537.600 - 614.375 MHz, BLOCKS 21, 22, 23)
MPN #SMDWB-B1
The design of the SMDWB transmitter delivers the advanced technology and features of Digital Hybrid Wireless in a Lectrosonics belt-pack transmitter at a modest cost. Dual Battery
To meet the demand for both extended operating range and extended battery life, the "WB" series SM transmitters offer selectable output power of 25, 50 and 100 mW. With higher power output, the operating range is improved at the expense of battery life. When range is not an issue, a lower power level can be used to extend the battery life.
The transmitters offer hands free setup and adjustment using audible tones. They can be put to sleep to conserve battery power during setup while buried inside costuming, then awakened for normal operation when the production begins. Other features include input gain adjustment in 1 dB increments over a 44 dB range and adjustable low frequency audio roll-off for 3 dB down points at 35, 50, 70, 100, 120 or 150 Hz to control subsonic and very low frequency audio conten
The DSP-based design works with all Digital Hybrid receivers, and is backward compatible for use with Lectrosonics 200 and 100 Series, IFB receivers and some analog receivers from other manufacturers in addition to its native Digital Hybrid Wireless operating mode.
Features
Selectable output power to maximize battery life or operating rangeUltra-lightweight, corrosion resistant housingWater resistant seals for use in damp environmentsLCD interface with lockout optionProgrammable compatibility modes for use with a wide variety of different receiversServo Bias input circuitryIR (infrared) port for fast setupCovers 3 standard frequency blocksUpdate firmware in the field via Micro SD card readerAlternate use as recorder on internal microSDHC memory card
Specifications
Transmitter
Operating frequencies: B1: 537.600 - 614.375 MHz, BLOCKS 21, 22, 23
Channel Spacing: Selectable; 25 or 100 kHz
RF Power output: Switchable; 25, 50 or 100 mW
Compatibility Modes: Digital Hybrid Wireless (NU Hbr), 200 Series, 100 Series, Mode 3, Mode 6, IFB
Pilot tone (Digital Hybrid Mode): 25 to 32 kHz; 5 kHz deviation
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (Digital Hybrid Mode)
Spurious radiation: Compliant with ETSI EN 300 422-1
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
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 any electret lavaliere
Gain control range: 44 dB; panel mounted membrane switches
Modulation indicators: Dual bicolor LEDs indicate modulation -20, -10, 0, +10 dB referenced to full modulation
Controls: Control panel w/ LCD and 4 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 (dB) (overall system, 400 Series mode)
SmartNR
OFF: No Limiting: 103.5 w/Limiting 108.0NORMAL: No Limiting 107.0, w/Limiting 111.5FULL: No Limiting 108.5, w/Limiting 113.0
Total Harmonic Distortion: 0.2% typical (400 Series mode)
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Flexible, unbreakable steel cable.
Battery: AA lithium, disposable
Battery Life w/ Lithium AA
SMWB 50 mW (1 AA): 7.25 hrsSMWB 100 mW (1 AA): 5.5 hrsSMDWB 50 mW (2 AA): 14.5 hrsSMDWB 100 mW (2 AA): 14 hrs
Weight (w/ lithium batteries)
SMWB: 2.7 oz.. (75.9 grams)SMDWB: 3.7 oz.. (105 grams)
Overall Dimensions (without microphone)
SMWB: 2.3 x 1.8 x 0.64 inches; 58 x 46 x 16 mmSMDWB: 2.3 x 2.4 x 0.64 inches; 58 x 60 x 16 mm
Emission Designator: 180KF3E
Recorder
Storage media: microSDHC memory card
File format: .wav files (BWF)
A/D converter: 24-bit
Sampling rate: 44.1 kHz
Recording modes/Bit rate
HD mono mode: 24 bit - 144 kbytes/s, 32 bit - 192 kbytes/s
Split gain mode: 24 bit - 288 kbytes/s, 32 bit - 384 kbytes/s
Input
Type: Analog mic/line level compatible; servo bias preamp for 2V and 4V lavaliere microphones
Input level
Dynamic mic: 0.5 mV to 50 mV
Electret mic: Nominal 2 mV to 300 mV
Line level: 17 mV to 1.7 V
Input connector: TA5M 5-pin male
Audio Performance
Frequency response: 20 Hz to 20 kHz; +0.5/-1.5 dB
Dynamic range: 110 dB (A), before limiting
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