Specifications and features – Lectrosonics UM700 User Manual
Page 14
UM700
SPECIFICATIONS AND FEATURES
Operating principle:
Proprietary digital modulation with encryption
Modulation type:
Modified pi/4 DQPSK
Sample rate:
44.1 ksps
Audio coder:
Proprietary sub-band ADPCM
Encryption key length:
128 bit (300 trillion trillion trillion keys)
Bit rate:
220,500 bps including packet overhead
Operating frequencies:
537.600 to 793.500 MHz depending upon local regulations
Frequency selection:
256 frequencies in 100kHz steps
RF Power output:
50 mW (nominal)
Frequency stability:
± 0.001%
Equivalent input noise:
–119 dBV, A-Weighted
Spurious radiation:
70 dB below carrier
Input Level:
Nominal 2 mV to 300 mV before limiting
Greater than 1V maximum with limiting
Input impedance:
Taps provided for 100, 4k, 40k Ohm
Input compressor:
Dual-envelope limiter; 30 dB range
Gain control range:
43 dB; semi-log rotary control
Modulation indicators:
Dual multi-color LEDs indicate modulation level in 4 steps at
-20, -10, 0, +10 dB with green and red indications
Low frequency roll-off
adjustment:
–18dB/octave; 35Hz to 150Hz
Controls:
2 position “ON-OFF” slide switch. Front panel knob adjusts audio gain.
Recessed control on side panel adjusts low frequency rolloff. Rotary
switches on side panel adjust transmitter frequency.
Audio Input Jack:
Switchcraft 5 pin locking (TA5M)
Antenna:
Detachable, flexible 1/4 wave bronze cable. 50 Ohm port allows
connection to test equipment.
Battery:
Precision compartment auto-adjusts to accept any known alkaline 9 Volt
battery. (We’ve tried 246 different ones!)
Battery Life:
5 hours (alkaline); 16 hours (lithium)
Weight:
6.3 ozs. including battery
Dimensions:
3.1 x 2.4 x .75 inches
Emission Designator:
180KQ2E
System Specifications
Audio frequency response:
40Hz to 20kHz, +/- 1dB
Audio dynamic range:
>100 dB before limiting
Audio Distortion:
0.05% THD + noise at 1kHz
Specifications subject to change without notice.
LECTROSONICS, INC.
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