| General
Information |
| Manufacturer
|
Listen Technologies |
| Manufacturer Part
Number |
LS-94-01
|
| Product Name
|
ListenIR Advanced iDSP Level II
System
|
| Overview |
| This ListenIR
Advanced iDSP Level II System from LISTEN Technologies is
a pre-configured package including everything needed for
secure audio transmission of for assistive listening
compliance in venues with a capacity of up to seats. The
package includes the LT-84-01 ListenIR
transmitter/radiator combo, two LR-5200-IR receivers, two
earphone/neck-loop lanyard units, two ear-speakers, one
USB to Micro-USB cable, one 12-unit charging tray, and one
disinfecting-wipe dispenser |
| Features |
|
Furnish and install an
IR wireless assistive listening system for use by the
hearing-impaired
The assistive listening
system (ALS) shall be capable of broadcasting up to
two audio channels with the choice of four 4mono
carrier frequencies, 2.3, 2.8, 3.3 and 3.8 MHz
The system coverage area
shall be up to 30,000 ft2 (2787 m2) with single
channel transmission
The system shall have a
SNR of 60 dB or better and THD of less than 2 percent
The system shall have an
audio frequency response of 63 Hz to 15 kHz, +/- 3db
The system shall have
two independent mixing audio inputs, one for each
transmission channel
Each mixing input shall
consist of one 3.5 mm Microphone input, one balanced
Phoenix type input and one unbalanced RCA input
The system shall have
independent channel audio processing with Limiting,
Compression and Noise Gate as well as transmit level
control and level indication via an LED
The system shall provide
Power and RF signal for up to Four Expansion Radiators
over CAT-5 cable for additional coverage
The system receivers
shall be capable of receiving on four wide band
channels (carriers), Channel 1 (2.3 MHz), Channel 2
(2.8 MHz), Channel 3 (3.3 MHz) and Channel 4 (3.8 MHz)
The receivers shall have
a programmable multi-function Listen button that can
be tuned for the venues desired channels and
electronically lock out any unused channels
The receivers shall have
the option of being lanyard or belt clip worn and the
lanyard shall incorporate an integrated neck loop for
compatibility with T-coil hearing aids
The receivers shall be
intelligent and provide customized audio to either
earphones or the integrated neck loop based upon which
is connected
The receivers shall have
two 3.5 mm (TRRS) connectors to drive the integrated
neck loop lanyard or up to two mono or stereo
earphones
The receivers shall
incorporate a multi-functional display (OLED) that
indicates battery status, inventory number, volume
level and a customizable channel name
The receivers shall
employ a unique iDSPTM noise reduction technology
The receiver shall be
fully programmable via PC software
The receivers shall have
a micro USB connector used for programming/setup,
inventory control, charging and firmware upgrades
The receiver shall
incorporate automatic battery charging circuitry and
use a non-proprietary lithium ion battery
The receivers shall
automatically turn on when removed from the charging
device and automatically turn off when returned to the
charging device
The receivers shall have
additional charging contacts to allow for multiply
charging options
|
| Specification |
In The Box
|
One LT-84-01 ListenIR
Transmitter/Radiator Combo
Two LR-5200-IR Advanced Intelligent DSP IR Receiver
Two LA-430 Intelligent Ear Phone/Neck Loop Lanyard
Two LA-401 Universal Ear Speaker
One LA-422 USB to Micro USB Cable
One LA-381-01 Intelligent 12-Unit Charging Tray
One LA-901 Listen Disinfecting Wipes (Cylinder 75 Count) |
ListenIR Transmitter/Radiator Combo
|
Audio
|
Frequency Response
|
20 Hz - 20 kHz (+/- 1 dB) Line
Input
63 Hz - 15 kHz (+/- 3dB) Sytem Specification (wireless end-to-end
with LR-44)
|
Signal-to-Noise Ratio
|
More than 70 dB (SNR) Line Input
More than 60 dB (SNR) System Specification (wireless
end-to-end with LR-44)
|
Microphone Input
|
Twon 3.5 mm Tip/Slaeeve connector,
-30 dBu nominal input, +14 dB headroom, impedance 4.4
kOhms, 5 VDC bias supply
|
Total harmonic Distortion
|
Less than 0.1 percent (THD) Line
Input
Less than 2 percent (THD) System Specification (wireless
end-to-end with LR-44)
|
Unbalanced Line Input
|
Stereo/Mono Input. Two Dual (RCA)
Phono connectors, unbalanced, -10 dBu nominal input, +14
dB headroom, impedance 10 kOhms
|
Balanced Line Input
|
Mono Input. Two Phoenix Type
connector, balanced, +4 dB unominal input, +14 dB
headroom, impedance 100 kOhms
|
Controls
|
Power Switch
|
Three position Switch - Power Off
Power On - Indicator Lights Off
Power On - Indicator Lights On
|
Carrier Frequency Selection
|
Two, four position rotary switches
(2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz)
|
Level Control Knob
|
Two audio taper rotary potentiometer,
counter-clockwise decreases input mix level, clockwise
increses input mix level
|
Indicators
|
Power Supply LED
|
Green LED on in-line power supply
indicates AC power is applied
|
Audio Level Indicators
|
Two Green LEDs
Two Red LEDs
Green LED indicates Audio presence and Red LED indicates
peaks in the audio
|
RJ-45 Amber LED
|
Solid Amber indicates carrier is
present and IR is being transmitted
|
RJ-45 Green LED
|
Solid Green indicates power is
applied to unit, flashing indicates unit has entered power
save mode
|
RF
|
Carrier Frequencies
|
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz,
Selectable
|
Number of Channels
|
Two channels, selectable carrier
frequency
|
frequency Accuracy
|
+/- 0.005 percent stability 0 to
50 degrees celsius
|
Transmitter Stability
|
50 PPM
|
Modulation
|
FM Wideband, +/- 50 kHz deviation
max, 50 uS pre-emphasis
|
Power Save Mode
|
Carrier will shut off when no
audio is present for 15 minutes on both channels to
preserve radiator life
|
Expansion Link Output
|
Two RJ-45 connectors
Provides RF Signal and Power, CAT-5e cable 24 AWG, 100 ft
maximum cable length, two LA-141s per output connector
|
IR
|
Coverage Area
|
30000 ft2 single channel with
LR5200-IR receivers
|
IR Emitter Power
|
1.49 W
|
Power
|
Power Supply Input
|
100-240 VAC
50-60 Hz
|
Power Supply Output
|
12 VDC
4 A
48 W
|
Power Supply Connector
|
2.5 mm ID barrel connector, center
positive
|
Power Output
|
Two RJ-45 connectors providing
Power and RF signal for up to two LA-141 expansion
rediators on each output
|
Power Supply Type
|
In-Line switching mode power
supply
|
Physical
|
Color
|
Black with White Slik Screening
|
Mounting
|
Can be mounted on a wall, ceiling,
or table with provided hardware (screws and hollow wall
anchors not provided) |
Environmental
|
Temperature - Operation
|
14 to 104 degrees fahrenheit
|
Temperature - Storage
|
-4 degrees fahrenheit to 122
degrees fahrenheit
|
Relatice Humidity
|
0 to 95 percent relative humidity,
non-condensing
|
Compliance
|
Standards
|
FCC part 15, ICS-03, CE, UL, CUL,
C-Tick, CCC, PSE, KC, GS, RoHS, WEEE |
Power Supply Compliance Marks
|
CUL, UL, CE, CCC, C-Tick, KC, PSE,
GS, FCC, RoHS |
Advanced Intelligent DSP IR Receiver
|
Audio
|
System Distortion
|
Less than 2 percent harmonic
distortio (THD) at 80 percent deviation
|
Audio Output Jacks
|
Two 3.5 mm connectors, unbalanced,
0 dBu nominal output level, 16 mW maximum, impedance 32
ohms, accepts mono or phono plug or LA-430 intelligent Eas
Phone/Neck Loop Lanyard
|
System Frequency Response
|
63 Hz - 15 kHz (+/- 3 dB)
|
System Signal to Noise Ratio
|
More Than 60 dB
|
Controls
|
User Controls
|
Power on/off, volume up/down,
Listen button for end use channel selection
|
Programming
|
Via software and USB port, Auto
Seek, Jack Sense, Squelch, Auto Power, Auto Off, Stereo,
Brightness, Channel Name, Channel Button, Channel Lock
|
Set-up Controls
|
Press and hold Up/down volume
buttons for 5 seconds to enter channel adjust, use up/down
to select channel
|
Indicators
|
Display
|
OLED - Channel designation,
battery level, unit number, charging status, volume status
|
LED
|
Flashes when batteries are low or
to indicate charging, solid when fully charged
|
RF
|
Carrier Frequencies
|
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
|
Number of Channels
|
Four selectable channels
|
Frequency Accuracy
|
+/- 0.005 percent stability 32 to
122 degrees fahrenheit
|
Modulation
|
FM Wideband, +/- 50 kHz deviation
max, 50 uS de-emphasis
|
IR
|
Coverage Area
|
30000 ft2 single channel with
LT-84
|
Squelch
|
Programmable in 20 steps,
automatic on loss IR signal
|
Power Save Mode
|
Turns unit off after a specified
time of no IR signal, default is 30 minutes
|
Sensitivity
|
Better than one nW/cm2 at 40 dB
SNR
|
Power
|
Power Supply
|
Micro USB connector
5 V
500 mA
|
Battery Type
|
Lithium Ion
|
Battery Life
|
8 Hours of Typical use
|
Battery Charging Time
|
Fully charged in 2.5 Hours
|
Physical
|
Color
|
Flat Black
|
Environmental
|
Temperature - Operation
|
14 to 104 degrees fahrenheit
|
Temperature - Storage
|
-4 to 122 degrees fahrenheit
|
Relative Humidity
|
0 to 95 percent relative humidity,
non-condensing
|
Compliance
|
Standards
|
FCC Part 15, ICS-03, CE, RoHS,
WEEE, ADA 706, CBC 11B-706
|
Intelligent Ear Phone/Neck Loop Lanyard
|
|
Interconnections
|
Connection to Receiver
|
Male 3.5 mm (TRRS) to Male 3.5 mm
(TRRS)
|
Connection to Short Ear Phone
|
Female 3.5 mm (TRS)
|
Loop
|
Neck Loop Field Strength
|
400 mA/m (+/- 3 dB)
|
Neck Loop Frequency Response
|
100 Hz to 5 kHz (+/- 3 dB ref 1
kHz)
|
Physical
|
Color
|
Black |
Compliance
|
Standards
|
RoHS, IEC60118-4
|
Universal Ear Speaker
|
Audio
|
Frequency Response
|
20 Hz - 20 kHz
|
Impedance
|
32 Ohms +/- 15 percent at 1 kHz
|
Input Sensitivity
|
115 dB +/- 4 dB at 1 kHz, 1 mW
|
Input Power Input
|
50 mW
|
Max Power Input
|
100 mW
|
Interconnections
|
Connector/s
|
Male 3.5 mm (TRS)
|
Physical
|
Color
|
Dark Gray
|
Cable Length
|
13", extension cable is 28"
|
Compliance
|
Standards
|
RoHS |
USB to Micro USB Cable
|
Interconnections
|
Connector/s
|
USB (type A to Micro USB (micro-B))
|
Physical
|
Color
|
Black |
Intelligent 12-Unit Charging Tray
|
Power
|
Power Supply Input
|
100-240 VAC
50-60 Hz
|
Power Supply Output
|
5.0 VDC
8 A
40 W
|
Power Supply Connector
|
0.22" OD x 0.9" ID, barrel Type
|
Cord
|
72" Input Power Cord
45" Output Cord
|
Physical
|
Color
|
Black |
Unit Capacity
|
12 Units
|
Compliance
|
Standards
|
UL, CE, RoHS
|
Listen Disinfecting Wipes (Cylinder 75 Count)
|
Physical
|
Sheet Size
|
7" x 8"
|
Weight and Dimensions
|
Weight
|
20 lbs
|
