Lectrosonics SMQ - Manual (Page 17)

Super-Minature Belt Pack Transmitter
Specifications and Features
Operating frequencies:
Block 21 537.600 - 563.100
Block 22 563.200 - 588.700
Block 23 588.800 - 607.900 and 614.100 - 614.300
Block 24 614.400 - 639.900
Block 25 640.000 - 665.500
Block 26 665.600 - 691.100
Block 27 691.200 - 716.700
Block 28 716.800 - 742.300
Block 29 742.400 - 767.900
Block 30 768.000 - 793.500
Block 31 793.600 - 819.100
Block 32 819.200 - 844.700
Block 33 844.800 - 865.000
Block 37 944.100 - 951.900
(Not all frequencies are usable in some countries)
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: SM: 100 mW (nominal)
SMD: 100 mW (nominal)
SMQ: 250 mW (nominal)
Compatibility Modes (6) Digital Hybrid Wireless™ (400 Series),
200 Series, 100 Series, Mode 3
(other analog), Mode 6, and 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 radiation: 60 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: 5.0 mV to 6 V before limiting.
Greater than 15 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: 40 dB; panel mounted membrane switches
Modulation indicators: Dual bicolor LEDs indicate modulation of
–20, -10, 0, +10 dB referenced to
full modulation.
Low frequency roll-off: –18 dB/octave; 70 Hz
Controls: Control panel with LCD and four
membrane switches.
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The audio is
deliberately rolled off at 70 Hz using a
18 dB/octave filter. This filter cannot be
disabled.)
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
SmartNR No Limiting w/Limiting
OFF 103.5 108.5
Note: The dual envelope “soft” NORMAL 107.0 111.5
limiter provides exceptionally good
FULL 108.5 113.0
handling of transients using variable
attack and release time constants. Once activated, the limiter compresses 30+ dB of
transmitter input range into 4.5 dB of receiver output range, thus reducing the measured
figure for SNR without limiting by 4.5 dB
Total Harmonic Distortion: 0.2% typical (400 Series mode)
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Flexible, unbreakable steel cable.
Batteries: 1.5 Volt AA lithium or NiMH recommended
Battery Life: SM: 1.5 hours (alkaline); 5.5 hours (lithium),
4 hours with 2500 mAh NiMH
SMD: 5.75 hours (alkaline); 14.25 hours (lithium),
8.5 hours with 2500 mAh NiMH
SMQ: 1.75 hours (alkaline); 7.5 hours (lithium),
5 hours with 2500 mAh NiMH
Weight: SM: 2.7 oz.. (75.9 grams) with lithium battery
SMD/Q: 3.7 oz.. (105 grams) with lithium batteries
Overall Dimensions:
SM: 2.3 x 1.8 x 0.64 inches
(not including microphone)
58 x 46 x 16 mm
(not including microphone)
SMD/Q: 2.3 x 2.4 x 0.64 inches
(not including microphone)
58 x 60 x 16 mm
(not including microphone)
Emission Designator: 180KFE3
Specifications subject to change without notice.
The FCC requires that the following statement be
included in this manual:
This device complies with FCC radiation exposure limits
as set forth for an uncontrolled environment. This device
should be installed and operated so that its antenna(s)
are not co-located or operating in conjunction with any
other antenna or transmitter.
Rio Rancho, NM 17