Specifications and features – Lectrosonics UH400a User Manual
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UH400A/UH400TM
Specifications and Features
Operating frequencies:
470.100 to 607.900 MHz; 614.100 to 767.900 MHz
Frequency selection:
256 frequencies in 100 kHz steps
RF Power output:
100 mW
Pilot tone:
25 to 32 kHz; 5 kHz deviation (in 400 Series (hybrid) mode)
Frequency stability:
± 0.002%
Deviation:
± 75 kHz max. (in 400 Series mode)
Spurious radiation:
60 dB below carrier
Equivalent input noise:
–118 dBV, A-weighted
Input level:
Nominal 2 mV to 300 mV, before limiting; Greater than 1.0 V maximum, with limiting.
Input impedance:
1 k Ohm
Phantom power:
Selectable; 5, 15, 48 VD (see details in Controls and Functions section)
Input limiter:
Soft limiter, >30 dB range
Gain control range:
43 dB; semi-log rotary control
Modulation indicators:
Dual bi-color LEDs indicate modulation of –20, -10, 0 and +10 dB referenced to full modulation.
Low frequency roll-off:
–12 dB/octave; 70 Hz (35 Hz for UH400TM)
Controls:
Control panel knob adjusts audio gain.
Rotary switches on bottom panel adjust transmitter frequency.
Audio Frequency Response:
90 Hz to 20 kHz, +/-1 dB (40 Hz to 20 kHz, +/- 1 db for UH400TM)
Note: The audio is deliberately rolled off at 70Hz using a 12 dB/octave filter on the UH400A. This filter cannot be disabled.
Signal to Noise Ratio (dB):
Note: The dual envelope “soft” limiter provides
exceptionally good 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 f
or SNR without limiting by 4.5 dB
SmartNR
No Limiting w/Limiting
OFF
103.5
108.5
NORMAL
107.0
111.5
FULL
108.5
113.0
Total Harmonic Distortion:
0.2% typical (400 Series mode)
Antenna:
Built-in; housing and input coupler form a dipole configuration
Battery Type:
9V Li Polymer rechargeable, Lithium
Battery Life:
4.5 Hours with alkaline or Li Polymer, 12 hrs with lithium
(Battery life will vary with battery brand, phantom power voltage setting and mic current drain.)
Weight:
7.873 oz. 223.2 grams with lithium battery, no mic
Overall Dimensions:
1.5 x 1.5 x 4.2 inches (Not including microphone.)
Emission Designator:
190KF3E
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.
LECTROSONICS, INC.
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