LT-82

Includes:
LT-82 IR Transmitter
LA-205 Universal Power Supply
LA-89 IR Interconnection Coaxial Cable
System Manual

Architectural Specifications:
The Stationary IR Transmitter shall be capable of broadcasting on four mono or stereo carriers; 2.3, 2.8, 3.3 and 3.8 MHz. Channel Selection shall be capable of being locked. Multiple transmitters shall be capable of being daisy-chained together to transmit up to 4 channels simultaneously. The transmitter shall have a timer that shuts off the carriers after 30 minutes when no audio is present at the transmitter. The transmitter shall have a SNR of 58 db or better. The device shall have an audio frequency response of 63 Hz to 15 kHz, +/- 3db. It shall have 2 mixing audio inputs, one balanced XLR/phone input and one unbalanced RCA input. The device shall have the following audio controls: input level, transmit level, adjustable low pass filter and stereo on/off control. The device shall have an audio processor that is capable of automatic gain control and limiting. The transmitter shall provide power for up to two radiators over CAT-5 cable. The LT-82 is specified.

	Specification	LT-82 Stationary IR Transmitter
RF	Carrier Frequencies	Selectable: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
	Number of Channels	4 channels. Selectable 1 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
	RF Output	(2) BNC connectors, for connection to radiator(s) and/or additional transmitter(s). 50 mV, 50 ohm, -10 dBm
	RF Input	(1) BNC connector, for connection from additional transmitter(s). 50 mV, 50 ohm, -10 dBm
	Compliance	FCC Part 15, Industry Canada, CE
Audio	** All system specifications are wireless end-to-end
	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
	Audio Processing	Compression can be turned on/off.
	Contour	Cuts and boosts frequencies above 5 kHz
	Combined Audio Output (Mix)	Input 1 and Input 2 Mixed Output (Rear panel). (2) Phono connectors, unbalanced, -10dBu -- nominal output level, +19dBu maximum, impedance 10 ohms.
	Headphone Output (Monitor)	Front panel. (1) 3.5mm connector, unbalanced, adjustable output level, +7dBu maxi- mum impedance 10 ohms. 100mW, 32 ohms, 3.5mm stereo.
Controls	Front Panel	Power, Test Tone on/off, Channel up/down, Input Level, Transmit Level, Contour, Headset Level
	Rear Panel	Input 1 Level (Line, Mic, Mic-Phantom Power), Input 2 Level (-10/+10 dBu)
	Internal Adjustments	Compression ratio for audio processor. Slope adjustable from 1:1 to 4:1. Default 2:1
	Programming	Stereo on/off, Processing on/off
Indicators	Unit Power	Red LED illuminates when the unit is powered up (front panel)
	Input 1, Input 2, Transmit Level	Indicates Input 1, Input 2, and Transmit audio levels. 10 segment LED’s (8 Green, 2 red)
	Stereo	Indicated by a green LED when on (front panel)
	Processing	Indicated by a green LED when on (front panel)
	RF Power	Indicates carrier is active on the LCD Display (front panel)
	LCD	Channel designation, lock status, RF Power, programming (front panel)
	Test Tone	Red LED illuminates when test tone enabled (front panel)
Power	Power Supply	In-line switching mode power supply, Listen part number LA-205
		Input: 100-240 VAC, 47-63 hz
		Output: 30 VDC, 1.5 A
		Output Connector: RJ-45
		Compliance: UL and CE Listed
	Power Output:	(2) RJ-45 jacks. For remote powering up to 2 radiators.
Physical	Dimensions (W x D x H)	8.5 x 9.125 x 1.75 in (21.5 x 23 x 4.5 cm)
	Color	Dark Grey with White Silk Screening
	Unit Weight	2.6 lbs (5.7 kg)
	Unit Weight with LA-205 Power Supply	3.8 lbs (8.3 kg)
	Shipping Weight	4.4 lbs (9.7 kg)
	Rack Mounting	1 rack space height, 1/2 rack space wide. One or two transmitters can be mounted in 1 rack space. Optional rack mount (LA-326) not included.
Environmental	Temperature - Operation	-10 C (14 F) to +40 (104 F)
	Temperature - Storage	-20 C (-4 F) to +50 (122 F)
	Humidity	0 to 95% relative humidity, non-condensing

1. POWER on/off

2. Controls input levels of inputs 1 and 2. Dual VU meters indicate input level.

3. Mix level control sets level of the mixed (or transmitted) audio. VU meter shows the output level of your mixed audio.

4. Contour equalization cuts/boosts frequencies above 5 kHz.

5. Processing (automatic gain control) can be turned on and off from the front panel.

6. Stereo indicator. When illuminated, indicates the unit is in stereo mode. Mode can be turned on and off from the front panel.

7. LCD shows channel selected, lock status, programming and carrier on.

8. Earphone jack and volume control to check audio integrity of transmission source.

9. UP/DOWN channel selection of up to four channels or carrier can be turned off.

10. Test tone provides flexibility when setting up and testing your system.

11. "RF Input" provides RF connection from other LT-82 units for multiple carrier interconnections. "RF Output" provides RF connection to LA-140 radiators

12. In-line Universal Power Supply included (be sure to order the appropriate configuration (power cord) for your country). Power supply has enough power for the LT-82 and up to two radiators. "Power Input" is from the power supply, "Power Output" is to radiators.

13. Two phono connectors for a mixed output of Inputs 1 and 2.

14. Two unbalanced phono stereo audio inputs. Select either +10 dBu or -10 dBu input level.