Stationary IR Submittal Cut Sheet

Stationary IR Submittal Cut Sheet
Stationary IR Submittal Cut Sheet
**All system specifications are wireless end-to-end
Specifications
Stationary
Transmitter
Overview
RF
Audio
Power
LT-82
Configuration
LT-82-01 (North America)
LT-82-02 (Asia, UK)
LT-82-03 (Euro)
Requires
LA-140 IR Radiator
Used With
LR-42 Stethoscope 4-Channel Receiver
LR-44 Lanyard 4-Channel IR Receiver
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels
Four channels. Selectable one channel per transmitter (mono or stereo)
Carrier Shut Off
Carrier will shut off when no audio is present for 30 minutes to preserve radiator life.
Frequency Accuracy
+/- .005% stability 0 to 50C
Transmitter Stability
50 PPM
System Frequency Response
63Hz - 15kHz (+/- 3dB)
System Signal to Noise Ratio (A-weighted)
>58dB
System Distortion
<2% total harmonic distortion (THD)
Audio Input 1
Mono Input (Rear Panel). Female-XLR and 1/4 in combo connector, balanced, 0/-55dBu
(line/mic) nominal input level adjustable; -30/+21dBu (mic/line) maximum input level;
impedance 20k/1k ohms (line/mic); phantom power +12VDC
Audio Input 2
Stereo or Mono Input (Rear Panel). (2) Phono connectors, unbalanced, -10/+10dBu nominal input level adjustable, +30dBu maximum, impedance 100k ohms
Power Supply
In-line switching mode power supply, Listen part number LA-205
Input: 200-240 VAC, 47-63 hz
Output: 30 VDC, 1.5 A
Output Connector: RJ-45
Compliance: URL and CE Listed
Power Output
(2) RJ-45 jacks for remote powering up to two radiators
Refer to complete Data Sheets for full product specifications for the LT-82 and LA-140.
Specifications
IR Radiator
Overview
RF
Physical
LA-140
Configuration
LA-140 (Grey)
LA-140 (White)
Requires
LT-82 Stationary IR Transmitter
Used With
LR-42 Stethoscope 4-Channel Receiver
LR-44 Lanyard 4-Channel IR Receiver
Frequency Range
1 MHz - 5 Mhz
Input
BNC Connection. -25dbm to -5dbm input nominal
Output
BNC Connection. -15 dbm nominal
Coverage Area
10,000 sf (929 sm) when used with Listen Receivers
Dimensions (H x W x D)
5.5 x 8 x 2.6 inches (140 x 203 x 66 mm)
Color
LA-140-GY (Grey), LA-140-WH (White)
Unit Weight
2.1 lbs (.95 kg)
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale, Utah 84065-4818
801.233.8992 • 800.330.0891 North America • 801.233.8995 fax
© Listen Technologies Corporation 2007 All rights reserved 72607
Stationary IR Page Specifications
Stethoscope
4-Channel
Receiver
Overview
RF
Audio
Controls
Power
LR-42
Configuration
LR-42
Requires
LA-363 High Capacity AAA Alkaline Batteries (Qty 2)
LT-82 Stationary IR Transmitter
LA-140 IR Radiator
Used With
LR-44 Lanyard 4-Channel IR Receiver
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels
4 selectable channels
Sensitivity
1 nW/cm2 at 40 db SNR
Frequency Accuracy
+/- .005% stability 0 to 50C
Squelch
Automatic on loss of RF signal (40 db SNR)
System Frequency Response
63Hz - 15kHz (+/- 3dB)
System Signal to Noise Ratio (A-weighted)
>58dB
System Distortion
<2% total harmonic distortion (THD)
User Controls
Volume, Power, Channel Select
Programming
Channel Lock, Auto Find, Auto Seek, Auto Shut-Off, Audible Option
Battery Type
Two AAA alkaline batteries or NiMH battery pack
Battery Life
30 hours alkaline, 15 hours NiMH rechargeable pack (LA-364)
Battery Charging
Fully Automatic with NiMH battery pack and LA-350 charger
Refer to complete Data Sheets for full product specifications for the LR-42 and LR-44.
Specifications
Lanyard
4-Channel
Receiver
Overview
RF
Audio
Controls
Power
LR-44
Configuration
LR-42
Requires
LA-363 High Capacity AAA Alkaline Batteries (Qty 2)
LT-82 Stationary IR Transmitter
LA-140 IR Radiator
Used With
LR-42 Stethoscope 4-Channel Receiver
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels
4 selectable channels
Sensitivity
1 nW/cm2 at 40 db SNR
Frequency Accuracy
+/- .005% stability 0 to 50C
Squelch
Automatic on loss of RF signal (40 db SNR)
System Frequency Response
63Hz - 15kHz (+/- 3dB)
System Signal to Noise Ratio (A-weighted)
>58dB
System Distortion
<2% total harmonic distortion (THD)
User Controls
Volume, Power, Channel Select
Programming
Channel Lock, Auto Find, Auto Seek, Auto Shut-Off, Audible Option
Battery Type
Two AAA alkaline batteries or NiMH battery pack
Battery Life
30 hours alkaline, 15 hours NiMH rechargeable pack (LA-364)
Battery Charging
Fully Automatic with NiMH battery pack and LA-350 charger
Listen Technologies Corporation • 14912 Heritagecrest Way • Bluffdale, Utah 84065-4818
801.233.8992 • 800.330.0891 North America • 801.233.8995 fax
© Listen Technologies Corporation 2007 All rights reserved 72607
Stationary IR Page 
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