Specifications And Features - Lectrosonics MM400C Instruction Manual

MM400C

Specifications and Features

Operating frequencies:
Block 470
Block 19
Block 20
Block 21
Block 22
Block 23
Block 24
Block 25
Block 26
Block 27
Block 28
Block 29
Frequency selection:
RF Power output:
Pilot tone:
Frequency stability:
Deviation:
Spurious radiation:
Equivalent input noise:
Input level:
Input impedance:
Input limiter:
Gain control range:
Modulation indicators:
Low frequency roll-off:
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.
18
470.100 - 495.600
486.400 - 511.900
512.000 - 537.500
537.600 - 563.100
563.200 - 588.700
588.800 - 607.900 and 614.100 - 614.300
614.400 - 639.900
640.000 - 665.500
665.600 - 691.100
691.200 - 716.700
716.800 - 742.300
742.400 - 767.900
256 frequencies in 100 kHz steps
100 mW (nominal)
25 to 32 kHz; 5 kHz deviation
(in 400 Series Mode)
± 0.002%
± 75 kHz max. (in 400 Series Mode)
60 dB below carrier
–118 dBV, A-weighted
Nominal 2 mV to 300 mV, before limiting.
Greater than 1.5V maximum, with limiting.
2 kOhm
Soft limiter, >30 dB range
43 dB; semi-log rotary control
Dual bicolor LEDs indicate modulation of
–20, -10, 0, +10 dB referenced to full
modulation.
–12 dB/octave; 70 Hz
Controls:
Audio Frequency Response:
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
(Note: the dual envelope "soft"
limiter provides exceptionally
good handling of transients
using variable attack and release
time constants. The gradual onset of limiting in the design begins below full
modulation, which reduces the measured figure for SNR without limiting by 4.5 dB)
Total Harmonic Distortion:
Audio Input Jack:
Antenna: Detachable, flexible galvanized steel
Battery:
Battery Life:
Weight:
Overall Dimensions:
Emission Designator: 180KF3E
Specifications subject to change without notice.
Front panel knob adjusts audio gain.
Rotary switches on bottom panel adjust
transmitter frequency.
80 Hz to 20 kHz, +/-1dB, -3 dB @ 70 Hz
(The audio is deliberately rolled off at 70 Hz
using a 12 dB/octave filter. This filter cannot
be disabled.)
SmartNR No Limiting w/Limiting
OFF 103.5 108.0
NORMAL 107.0 111.5
FULL 108.5 113.0
0.2% typical (400 Series mode)
2.5 mm Microjack (matches Switchcraft 850
Microplug)
with SMA connector. (50 Ohm antenna port
also allows connection to test equipment.)
1.5 Volt AA lithium recommended
1.75 hours (alkaline); over 6 hours (lithium);
3.5 hours (2200 mAhr) NiMH
3.6 ozs. (102 grams) with lithium battery,
no antenna
3.03 x 2 x 0.69 inches (not including
microphone or antenna)
LECTROSONICS, INC.