Listen Technologies LT-141, User Manual

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PAGE 18
LT-84 Specifications
LT-84 Stationary IR Transmitter/Radiator Combo
Power Power Supply Type In-line switching supply, Listen part number LA-210
Power Supply Input 100-240 VAC, 50-60 Hz
Power Supply Output 12 VDC, 4A, 48W, center positive, 2.5 mm ID barrel connector
Power Line Cord North America Type B (LT-84-01), Asia and UK Type G (LT-84-02),
Euro Type J (LT-84-03)
RF Carrier Frequencies 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz, selectable
Number of Channels Two (2) Channels
Modulation FM Wideband, ±50kHz deviation max, 50 μS pre-emphasis
IR Power 1.49 W
Coverage Area 30,000 ft
2
(2787 m
2
) single channel with LR-4200-IR/LR-5200-IR
receivers or 7,500 ft
2
(697 m
2
) with LR-42/LR-44 receivers.
Expansion Link Output Two (2) RJ-45 connectors, CAT-5e cable 24 AWG, 100 ft.
maximum cable length, two (2) LA-141s per output connector
Power Save Mode Shuts off carrier when no audio is present for 15 minutes
Controls Power Switch - Three (3) position switch - Power OFF, Power ON-Indicator Lights
Indicator Lights On/Off OFF, Power ON-Indicator Lights ON
Level Control Knob Audio taper rotary potentiometer, counter-clockwise
decreases input mix level, clockwise increases input mix level
Frequency Selector Four (4) position rotary switch (2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz)
Transmission ON/OFF Two (2) position switch (transmission OFF, transmission ON)
Indicators Power Supply LED Green LED on in-line power supply indicates AC power is applied
Audio Level Indicators Green LED indicates Audio presence and Red LED indicates
peaks in the audio
Green LEDs - Power Solid Green indicates power is applied to unit, flashing
Indicator RJ-45 indicates unit has entered power save mode
Amber LEDs - Status Solid Amber indicates carrier is present and IR is being transmitted
Indicator RJ-45
Audio Microphone Input 3.5 mm (0.14in.) Tip/Sleeve connector, -30 dBu nominal input,
+14 dB headroom, impedance 4.4k Ohms, 5 VDC bias supply
Line Input Stereo/Mono Input. Two (2) RCA Phono connectors, unbalanced,
-10 dBu nominal input, +14 dB headroom, impedance 10k
Line Input Mono Input. Pheonix Type connector, balanced, + 4 dBu
nominal input, +14 dB headroom, impedance 100k
Frequency Response 20 Hz - 20 kHz (+/- 1 dB) Line Input
63 Hz - 15 kHz (+/- 3 dB) System Specification (wireless end-to-end
with LR-44)
Total Harmonic Distortion <0.1% (THD) Line Input
<2% (THD) System Specification (wireless end-to-end with LR-44)
Signal-to-Noise Ratio >70 dB (SNR) Line Input
>60 dB (SNR) System Specification (wireless end-to-end with LR-44)
Physical Color Black
Dimensions (H x W xD) 1.5 x 10.7 x 4.1 in. (3.81 x 27.2 x 10.5 cm)
Weight 0.8 lbs. (0.4 kg)
Unit Weight with Power Supply 1.4 lbs. (0.7 kg)
Shipping Weight 3.4 lbs. (1.54 kg)
Environmental Temperature - Operation 14 °F (-10 °C) to +104 °F (40 °C)
Temperature - Storage -4 °F (-20 °C) to +122 °F (50 °C)
Relative Humidity 0 to 95% relative humidity, non-condensing
Compliance Standards FCC Part 15, Industry Canada, CE, RoHS, WEEE, CUL