Lectrosonics Inc LMAM 사용자 설명서

1

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.

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

Frequency Selection: 

256 frequencies in 100 kHz steps

Channel Separation: 

100 kHz

Compatibility Modes: 

Lectrosonics 400 Series (Digital Hybrid), 200 Series, 100 Series, and IFB. 

 

 

Mode 3, Mode 6 (Other brands).

RF Power output: 

Greater than 50 mW

Pilot tone:  

25 to 32 kHz frequency; 5 kHz deviation (400 Series only)

Frequency stability: 

± 0.002%

Deviation:  

± 75 kHz max. (200 & 400 Series Modes)

Spurious radiation: 

60 dB below carrier

Equivalent input noise: 

–120 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: 

Dual envelope, >30 dB range

 

(Note: The dual envelope “soft” limiter provides exceptionally good handling of transients using variable attack and release time constraints.)

Gain control range: 

43 dB; semi-log rotary control

Modulation indicators: 

Dual bicolor LEDs indicate modulation  of -20, -10, 0, +10 dB referenced to full modulation.

Low frequency roll-off: 

LM: –12 dB/octave; -3 dB @ 70 Hz 

 

 

IM: –12 dB/octave; -3 dB @ 35 Hz

Audio frequency response 

(overall system): 

LM: 90 Hz to 20 kHz (+/- 1 dB) with the 70Hz low frequency roll-off filter. 

 

 

IM: 40 Hz to 20 kHz (+/- 1 dB) 

 

(Note: The transmitter is deliberately rolled off at 70Hz in the LM tramsmitter to reduce transmission of the lower frequency noise when used with a microphone.)

Controls:   

2 position “OFF-ON” slide switch for noiseless turn on/turn off operation.   

 

 

Front panel audio gain control. 

 

 

Rotary switches on side panel adjust transmitter frequency.

Audio Input Jack: 

Switchcraft 5 pin locking (TA5F)

Antenna:   

Galvanized steel, flexible wire.

Battery:   

Precision compartment auto-adjusts to accept any known alkaline 9 volt battery. 

Battery Life: 

6 hours (alkaline); 13 hours continuous (lithium)

Weight:   

6.3 ozs. including battery

Dimensions: 

3.1 x 2.4 x .75 inches

Emission Designator:   

180KF3E

Specifications subject to change without notice.

Specifications and Features