Lectrosonics SMa User Manual download pdf (Page 21)

Super-Minature Belt Pack Transmitters

Speciﬁcations and Features

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 (export only)

Block 28 716.800 - 742.300 (export only)

Block 29 742.400 - 767.900 (export only)

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)

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)

Spurious radiation: 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: 17 mV to 1.7 V before limiting.

Greater than 50 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

Bias voltages: Fixed 5 V at up to 5 mA

The FCC requires that the following statements be

included in this manual for SM Series transmitters:

For body worn operation, this SMa Belt-Pack Transmitter has

been tested and meets the FCC RF exposure guidelines

when used with the Lectrosonics accessories supplied or

designated for this product. Use of other accessories may

not ensure compliance with FCC RF exposure guidelines.

Contact Lectrosonics if you have any questions or need more

information about RF exposure using this product..

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.

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.

0dB

-3

-6

-9

-12

Line in

Mic in 150 Hz

Roll-off

Mic in 35 Hz

Roll-off

100

1kH

z 1

20k

Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The low frequency

roll-off is adjustable - see graph above)

Signal to Noise Ratio (dB):

SmartNR No Limiting w/Limiting

(overall system, 400 Series mode)

OFF 103.5 108.0

(Note: the dual envelope “soft”

limiter provides exceptionally

good handling of transients

NORMAL

FULL

107.0

108.5

111.5

113.0

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: 0.2% typical (400 Series mode)

Audio Input Jack: Switchcraft 5-pin locking (TA5F)

Antenna: Flexible, unbreakable steel cable.

Batteries:

Battery Life:

1.5 Volt AA lithium or rechargeable

NiMH recommended

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

4 hours with 2500mAh NiMH

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

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

Overall Dimensions:

SMa//RM: 2.3 x 1.8 x 0.64 inches

(not including microphone/lanyard)

58 x 46 x 16 mm

(not including microphone/lanyard)

Emission Designator: 180KF3E

Speciﬁcations subject to change without notice.

The FCC requires that the following statement be in-

cluded in this manual for the RM:

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions: (1) This

device may not cause harmful interference, and (2) this device

must accept any interference received, including interference

that may cause undesired operation.

Rio Rancho, NM

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