Справочник Пользователя для Lectrosonics Inc LMBC1

LMb

LECTROSONICS, INC.

18

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 A1: 

470.100 - 537.575 

  Block B1: 

537.600 - 614.375 

  Block C1: 

614.400 - 691.175 

  Block D1: 

691.200 - 767.975 (export only)

Frequency Selection Steps: 

Selectable; 100 kHz or 25 kHz

RF Power output: 

50 mW

Pilot tone: 

25 to 32 kHz; 5 kHz deviation 

 

 

(Digital Hybrid mode)

Frequency Stability: 

± 0.002%

Deviation: 

± 75 kHz max. (Digital Hybrid mode)

Spurious radiation: 

60 dB below carrier

Equivalent input noise: 

–120 dBV (A-weighted)

Input level: 

Nominal 2 mV to 300 mV, before limiting 

 

 

Greater than 1V maximum, with limiting. 

)NPUT

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Input limiter: 

DSP controlled, dual envelope “soft” limiter 

 

 

with greater than 30 dB range

Gain control range: 

44 dB; digital control

-ODULATION

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  -20, -10, 0 and +10 dB referenced to full  

  

 

modulation 

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#ONTROLS

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  power, mute, talkback or none (off) function

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  interface for power on/off and all setup and 

  

 configuration 

controls

Audio Input Jack: 

Switchcraft 5-pin locking (TA5F)

Antenna: 

Galvanized steel, flexible  wire

Battery: 

Two AA; alkaline, lithium, NiMH rechargeable

"ATTERY

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  new batteries fully charged

Weight: 

5.8 ounces (141 grams), including lithium AA batteries 

   

and wire belt clip

Dimensions: 

3.2 x 2.4 x .9 in. (81 x 61 x 20 mm)

Emission Designator: 

180KF3E

Specifications and Features

&REQUENCY

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Low frequency roll-off: 
 

Mic input: 

-3 dB at 70 Hz, slope steepens at lower frequencies

THD:  

0.2% (typical)

SNR at receiver output:

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 for SNR without limiting by 4.5 dB

SmartNR No 

Limiting 

w/Limiting

OFF 103.5 108.0

NORMAL 107.0 

111.5

FULL 108.5 113.0