Lectrosonics UM450 - Manual (Page 17)

Frequency Synthesized UHF Belt-Pack Transmitter
Specifications and Features
Operating frequencies: Block 470: 470.100 - 495.600
Block 19: 486.400 - 511.900
Block 20: 512.000 - 537.500
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 944: 944.100 - 951.900
Frequency selection:
RF Power output:
Pilot tone:25 to 32 kHz frequency; 5kHz deviation
Frequency stability:
Deviation:± 75 kHz (max)
Spurious radiation:
Equivalent input noise:
Input level:
Input impedance:
Dynamic mic:
Electret lavaliere:
Line level:
256 frequencies in 100kHz steps
250 mW (nominal)
± 0.002%
90 dB below carrier
–120 dBV, A-weighted
Nominal 2 mV to 300 mV, before limiting.
Greater than 1V maximum, with limiting.
300 Ohms
Input is virtual ground with servo adjusted constant current bias
2.7 k Ohms
Input compressor:
Gain control range:
Modulation indicators: Dual envelope compressor, >30 dB range
43 dB; semi-log rotary control
Dual bicolor LEDs indicate modulation of -20, -10, 0, +10 dB
referenced to full modulation.
Low frequency roll-off:
Audio frequency response (overall system): –18 dB/octave; 35Hz to 150Hz
35 Hz to 20 kHz, +/-1 dB (The low frequency
roll-off is adjustable - see graph)
+6
+3
0dB
-3
-6
-9
-12
Controls: 2 position “OFF-ON” slide switch for noiseless turn on/turn off operation.
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 (TA5F)
Antenna: Detachable, flexible wire supplied. 50 Ohm port allows
connection to test equipment.
Power Consumption: 125mA @ 9V
Battery: Precision compartment auto-adjusts to accept any known alkaline 9 Volt battery.
Battery Life: 1.5 hours (alkaline); 3.5 hours (LiPolymer Rechargeable)
Operating Temperature: -20 to +140 degrees F
Weight: 6.3 ozs. including battery
Dimensions: 3.1 x 2.4 x .75 inches
Emission Designator: 180KF3E
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.
Line in
Mic in 150 Hz
Roll-off
Mic in 35 Hz
Roll-off
30 100 1kHz 10k 20k
Rio Rancho, NM 17