User Manual for LISTEN models including: LT-800-072 Stationary RF Transmitter, LT-800-072, Stationary RF Transmitter, RF c, RF Transmitter

LT800 UserManual

Jason Stewart

User Manual

Listen Technologies Corporation 800-002 OMD800-002 OMD800002 800 002

Listen Technologies Corporation 803-001 OMD803-001 OMD803001 803 001


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User Manual
LT-800-072 Stationary RF Transmitter LT-803-072 Stationary RF Transmitter LT-800-216 Stationary RF Transmitter
www.listentech.com

Table of Contents
Block Diagram Quick Reference
Troubleshooting Warranty

2 3 3 3 4
5 6 9 10 11 12 12
13 14 14 15 16
17 19 19 20 21 21 22
1

Package Contents
LT-800-072 Contents LT-803-072 Contents LT-816-072 Contents
2

LT-800-072

LA-207

LT-803-072

LA-207

LT-800-216

LA-207

RF Audio

RF Frequency Range Number of Channels Frequency Accuracy Transmitter Stability Output Power Antenna Antenna Connector Compliance
System Frequency Response System Signal to Noise Ratio
System Distortion Audio Input 1
Audio Input 2
Contour

LT-800-072 72.025 - 75.950 MHz
17 wide band, 40 narrow band

LT-803-072 3 wide band

50 PPM 80,000uV at 3 m
Various Antennas available BNC
FCC Part 15, Industry Canada

LT-800-216 216.025 - 216.9875 MHz 19 wide band, 38 narrow band
FCC Part 90, Industry Canada

80 dB SQ enabled; 60 dB SQ disabled

80 dB SQ enabled; 50 dB SQ disabled

Cuts and boosts frequencies above 5 kHz

Controls

Front Panel Rear Panel
Programming

Indicators

SQ and Processing RF Power

Test Tone

Power

Power Supply Type Power Supply Input Power Supply Output Power Supply Connector Power Supply Compliance

Physical

Color
Shipping Weight Rack Mounting

Environmental

Temperature - Operation Temperature - Storage Humidity

Compression ratio for audio processor 0 to 95% Relative Humidity, non condensing

3

Block Diagram
4

Quick Reference
Front Panel: Controls & Displays

Remove rubber plug and screw

Quiet mode is

which channel

in a headset and

Power

occasionally lights the voice and clockwise for

to lock on current

Back Panel: Connections & Settings

website for details on antennas

phono connectors; and the

match the level of your not used to increase or

connection of a microphone or combination connector accepts

power supply

unbalanced audio to these phono connectors, input level

5

Setup Instructions
1 Unpack the Product 2 Mount in Rack (if necessary)
NOTE: If rack mounting, you will need to use a rear connection antenna.

3 Connect Antenna
remote antenna connected to the rear of the unit, do not antenna options, or refer to the Listen website for remote antenna options, www.listentech.com.

4 Connect Power
Plug the power supply into the power connector on the back

Rubber Plug antenna connected through top of unit

5 Select Phonak Compatibility (if necessary)
6

Setup Instructions (cont.)
To Select Phonak Mode (LT-800 only):
6 Select Channel Mode (if necessary) To Select Expanded Mode (LT-800 only):
7 Set SQ (Super Quiet) and Process Features (SQ available on LT-800 only): To Disable or Enable SQ and Process Features:
Once in the program mode, Program icon
Process is enabled disabled the features as desired, let the transmitter
7

Setup Instructions (cont.)
8 Set RF Power
are operating multiple transmitters in the same environment, it is best to set the transmitters output power to its lowest level to reduce the
9 Connect Audio Inputs

power power power

Input 1
Line

Plug your balanced or unbalanced audio source into

Phantom Power

XLR Wiring

Input 2
8

Operating Instructions
1 Power Unit On 2 Select a Channel
NOTE: The LT-800 is shipped with only limited channels (Basic Mode). To select from all channels (Expanded Mode) refer to page 11.
3 Lock on Channel
Lock icon
4 Test Tone (if necessary)
Press Test Tone button here
9

Audio Control
1 Adjust Audio Input Level
2 Adjust Contour 3 Adjust Mix Level
10

Listen SQ (Super Quiet) - Improving Your Listening Experience

People are accustomed to listening to low noise, high fidelity audio

SQ Summary

performance by at least

with older version Listen products

·

products

·

be enabled for both the transmitter and receivers

·

permit operation with older Listen products or other

Process Mode
input levels by raising or lowering the signal level accordingly to provide a where a consistent sound level is important and the input levels vary
Basic and Expanded Mode (LT-800 only)

11

RF Reception Maximization Strategies
When designing and installing your system, keep in mind that the location of both the transmitting and
CAUTION: When installing antennas, ensure the antenna is clear of power lines. www.listentech.com,
Coaxial Cable
cable that is better or worse than this value. Please check with the cable vendor or manufacturer for exact specifications. 12

Channel Selection

audio through the headphone or via the speaker and choose a channel
If you are using multiple channels follow this process:
Same Space
Distributed Spacing over a large area, you can achieve more simultaneous broadcast

Wide Band Listen recommends that you always use a wide band channel unless you need to narrow band receivers from band channels have lower noise than their narrow band
At 72MHz operates on 17 wide band
· Letters= Wide Band
At 216MHz

Notes in regard to using 72 MHz and 216 MHz systems:

13

72 MHz Compatibility Chart
Wideband frequencies are indicated in highlighted
14

216 MHz Compatibility Chart
Wideband frequencies are The highlighted channels also indicated those channels can be accessed when in
15

Phonak Frequency Chart

Frequency (MHz)

Listen

216.012

1A

1

216.025

2A

41

216.037

3A

2

216.062

1B

21

216.075

2B

42

216.088

3B

4

216.113

1C

5

216.125

2C

43

216.137

3C

22

216.162

1D

23

216.175

2D

44

216.188

3D

8

216.213

9

216.225

45

216.238

24

216.262

1F

25

216.275

2F

46

216.287

3F

12

216.312

13

216.325

47

216.338

26

216.363

1H

27

216.375

2H

48

216.387

3H

16

216.412

1J

17

216.425

2J

49

216.438

3J

18

216.512

1K

61

216.525

2K

29

216.537

3K

62

216.562

28

216.575

52

216.588

64

216.613

1M

65

216.625

2M

53

216.637

3M

81

216.662

1N

82

216.675

2N

54

216.688

3N

68

216.713

1P

69

216.725

2P

55

216.738

3P

83

216.762

1R

84

216.775

2R

56

216.787

3R

72

216.812

1S

73

216.825

2S

57

216.838

3S

76

216.863

1T

85

216.875

2T

58

216.887

3T

86

216.912

77

216.925

59

216.938

88

216.963

1V

79

216.975

2V

60

216.988

3V

80

16

Wideband frequencies are indicated in also indicated those channels available in the

Troubleshooting
The LT-800/LT-803 has no power. There is no audio or the audio level is too low.
The audio is distorted. There is hum in the audio. There is a tone. The Audio Input 1 sounds "tinny". I cannot pick up the signal on the receiver. I can pick up the signal on the receiver, but it sounds like it's not tuned in.
17

Troubleshooting (cont.)
I'm using another brand of receiver - how do I tell which channel to use? There is not sufficient range. There is interference in my transmission. End users are adjusting the unit. I am using other manufacturers' receivers and the sound is distorted. Several transmitters are operating in the same environment. Can I have two antennas connected to my transmitter?
18

Compliance Notice & FCC Statement
auditory assistance to persons with disabilities, persons who require language translation, or persons in educational settings; health care services to the ill; law enforcement tracking services under agreement with
LT-800/803 FCC Statement
This equipment has been tested and found to comply with the limits for a class B digital device, pursuant and if not installed and used in accordance with the instructions, may cause harmful interference to radio this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
· · · ·
19

Industry Canada Statement
LT-800/803 Industry Canada Statement
This device may not cause interference, and This device must accept any interference, including interference that may cause undesired operation of
20

Warranty & Contacting Listen
Warranty
be transferred, in the event product is transferred the warranty is valid from the original date of the product without limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws Listen stands by the quality of its manufactured products and will, at its own discretion, repair or replace any
https://www.listentech.com/support/warranty/
21

Accessories

LA-101

LA-102

LA-106

LA-107

LA-122
The single solution for all of your indoor remote antenna
dipoles and monopole radials; hardware for multiple mounting

LA-123 LA-124

LA-125

LA-126

22

LA-326
NOTE: Rack mounted units cannot use the LA-106, LA-102 or LA-101 top mounted antenna.



References

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