Lectrosonics Inc SMQE 사용자 설명서

21

The FCC requires that the following statement be in-

cluded in this manual for the RM:

Bias voltages: 

Fixed 5 V at up to 5 mA

 

 

Selectable 2 V or 4 V servo bias for any  

 

 

electret lavaliere.

Gain control range: 

40 dB; panel mounted membrane switches

Modulation indicators: 

Dual bicolor LEDs indicate modulation of  

 

 

–20, -10, 0, +10 dB referenced to  

 

 

full modulation.

Controls:  

Control panel with LCD and four membrane 

 

 

switches.

Low frequency roll-off: 

Adjustable from 35 to 150 Hz.

 

30

100

1kHz

10k

20k

+6

+3

0dB

-3

-6

-9

-12

Line in

Mic in 150 Hz

Roll-off

Mic in 35 Hz

Roll-off

Audio Frequency Response: 

35 Hz to 20 kHz, +/-1 dB  (The low frequency 

(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)

SmartNR 

No Limiting 

w/Limiting

OFF 

103.5 

108.0

NORMAL 

107.0 

111.5

FULL 

108.5 

113.0

Total Harmonic Distortion: 

0.2% typical (400 Series mode)

Audio Input Jack: 

Switchcraft 5-pin locking (TA5F)

Antenna: Flexible, unbreakable steel cable.
Batteries: 

1.5 Volt AA lithium or rechargeable  

 

 

NiMH recommended

Battery Life: 

SM:  1.5 hours (alkaline); 5.5 hours (lithium), 

 

 

  4 hours with 2500mAh NiMH

 

 

SMD:  5.75 hours (alkaline); 14.25 hours (lithium), 

 

 

  8.5 hours with 2500mAh NiMH

 

 

SMQ:  1.75 hours (alkaline); 7.5 hours (lithium), 

 

 

  5 hours with 2500mAh NiMH

Weight:   

RM:  2.3 oz.. (65.8 grams) with lithium battery

 

 

SM:  2.7 oz.. (75.9 grams) with lithium battery

 

 

SMD/Q:  3.7 oz.. (105 grams) with lithium batteries

Overall Dimensions:
 

 

SM/RM:  2.3 x 1.8 x 0.64 inches  

 

 

  (not including microphone/lanyard) 

 

 

  58 x 46 x 16 mm  

 

 

  (not including microphone/lanyard)

 

 

SMD/Q:  2.3 x 2.4 x 0.64 inches  

 

 

  (not including microphone) 

 

 

  58 x 60 x 16 mm  

 

 

  (not including microphone)

Emission Designator:  180KF3E

Specifications subject to change without notice. 

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 usage varies by country)

Frequency range: 

256 frequencies in 100 kHz steps  

 

 

for one 25.5 MHz wide block

Channel Spacing: 

100 kHz

Frequency selection: 

Control panel mounted membrane switches

RF Power output: 

SMa: 

100 mW (nominal) 

 

 

SMDa:  100 mW (nominal) 

 

 

SMQa:  250 mW (nominal)

Compatibility Modes (6) 

Digital Hybrid Wireless™ (400 Series),  

 

 

200 Series, 100 Series, Mode 3  

 

 

(other analog), Mode 6, and IFB

Pilot tone: 

25 to 32 kHz; 5 kHz deviation  

 

 

(in 400 Series Mode)

Frequency stability: 

± 0.002%

Deviation: 

± 75 kHz max. (in 400 Series Mode)

60 dB below carrier

Equivalent input noise: 

–125 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: 

Soft limiter, 30 dB range

Specifications and Features

The FCC requires that the following statements be 

included in this manual for SM Series transmitters: