Listen Technologies Digital IR 8-Channel Receiver

Listen Technologies Digital IR 8-Channel Receiver

Listen Technologies Digital IR 8-Channel Receiver

B&H # LIR8 MFR # R8
Listen Technologies Digital IR 8-Channel Receiver

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  • 1Description

The Digital IR 8-Channel Receiver from Listen Technologies receives the digital IR signal and offers the user channel and volume control. It is worn in a shirt-pocket or around the neck with a lanyard and uses an external headphone with a standard 3.5 mm stereo jack. The capacity is 8 mono standard quality channels, 4 mono perfect quality channels, 4 stereo standard quality channels, 2 stereo perfect quality channels, or a mixture of the above. The receiver will only display the channels and languages that are programmed on the transmitter, as well as indicate the volume level, battery level, and reception status on the LCD. The receiver is automatically turned off when the headphone is removed or the transmitter stops transmitting, in order to save battery life. The battery life is 52 hours with a NiMH rechargeable battery pack or 70 hours with two alkaline AA batteries.

High-quality stereo audio
Up to 70 hours of battery life
Operates on two AA batteries or a NiMH rechargeable battery pack
Automatic off mode to save battery life
Large LCD for status indication
270° wide angle reception
Built-in error detection and correction
Test mode for determining signal strength
In the Box
Listen Technologies Digital IR 8-Channel Receiver
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description
    Number of Channels 8
    Frequency Response 20 Hz to 10 kHz (-3 dB)
    20 Hz to 20 kHz (-3 dB)
    THD <0.05% @ 1 kHz
    Cross Talk Attentuation: >80 dB @ 1 kHz
    Dynamic Range >80 dB
    Signal to Noise Ratio A Weighted: >80 dB
    Headphone Impedance 32 ohms to 2 kOhms
    Headphone Level 450 mV RMS (speech at max volume)
    32 ohms (nominal 2.4 V battery voltage)
    Power Switch On/Off switch on the front of unit
    Channel Selection Pivoting button to scroll to the next/pervious channel
    Volume Pivoting button +/- to adjust volume level
    LCD Displays channel number, language, reception status, volume level, and battery status
    LED Blinking: battery charging
    Steady: charging complete
    IR Interface
    IR Wavelength 870 nm
    Protocol DQPSK, according to IEC 61603-7
    IR Carrier Modulation Frequency Carriers 0 to 5: 2 to 6 MHz (according to IEC 61603-7)
    Carriers 6 and 7: up to 8 MHz
    Carrier Frequency 2.333, 3.000, 3.666, 4.333, 5.000, 5.666, 6.333, and 7.000 MHz
    IR Irradiance: 4 mW/m² per carrier
    Sensitivity Angle: 270°
    Power Supply Voltage 1.8 to 3.6 V, nominal 2.4 V
    Power Consumption 38 mA nominal (32 Ohm Headphone)
    Operating Temperature 32 to 113°F (0 to 45°C)
    Storage Temperature -40 to 158°F (-40 to 70°C)
    Relative Humidity <95%
    Color Black
    Dimensions Unit: 6.11 x 1.82 x 0.95" (155 x 46 x 24 mm)
    Weight Unit: 2.82 oz (80 g) Unit with Batteries: 4.76 oz (135 g)
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