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                                                         MULTI-TASKER

3

ABOUT YOUR MT108-102/(103)

2

MT108-102/(103)
1-in 4-out Stereo Audio Distribution
Amplifier Cards

The 

MT108-102

 and 

MT108-103

 are Stereo, Audio

Distribution Amplifier Cards designed for use with
the Multi-Tasker

 system. When installed in a

Multi-Tasker

, these cards allow the connection of

a single stereo, audio source to four receiving
devices. All inputs and outputs are balanced,
allowing longer cable runs and superior noise
reduction.

As “transparent” distribution amplifiers, these cards
utilize AC coupling on their inputs for ideal signal
transfer characteristics. The power indicator on the
card doubles as a signal detection indicator,
allowing easy troubleshooting in complex
configurations. Each card consumes one slot in the
Multi-Tasker

 enclosure.

The 

MT108-103

 also has the ability to

independently turn on or off each output under the
control of RS-232 commands sent to the
Multi-Tasker

 enclosure.

TECHNICAL SPECIFICATIONS

3

FEATURES/DESCRIPTION

MT108-102/(103)

GENERAL
Inputs

Input Connector

(1) 5-pin terminal block

L+, L-, GND, R+ & R-

Outputs

Output Connector

(4) 5-pin terminal blocks

L+, L-, GND, R+ & R-

Compatibility

Balanced Stereo Audio

Table 1.

 MT108-102/(103)

 

General

MECHANICAL

MT108-102/(103)

Basic Enclosure Slots
Required

One

T° Operating

10°C-40°C

T° Storage

0 to 50°C

Humidity

90% non-condensing

MTBF (calc.)

40,000 hrs

Table 2. 

MT108-102/(103)

 Mechanical

ELECTRICAL

MT108-102/(103)

Audio Input

Impedance

10k Ohms

Coupling

AC

Audio Throughput

Gain

0 dB

Signal Amplitude

+/-3V

Frequency Response

10Hz to 20kHz

(+/-0.05dB)

Noise Floor

-100 dB @ 20 kHz

CMRR

>80 dB, 10 Hz to 20 kHz

Audio Output

Level, Each Channel

1V p-p

Impedance

600 Ohms

Gain

0 dB

Power

Power from
MT100

-100

+6V

+13V

-13V

Power

Consumption

MT108

-102

45 mA 45 mA 45 mA

1.2 watts

MT108

-103

80 mA 45 mA 45 mA

1.7 watts

Table 3. 

MT108-102/(103) 

Electrical

Summary of Contents for MULTI-TASKER MT108-102

Page 1: ...MULTI TASKER MANUAL PART NUMBER 400 0162 002 1 IN 4 OUT STEREO AUDIO DISTRIBUTION AMPLIFIER CARDS FOR MULTI TASKER USER S GUIDE MT108 102 is shown above MT108 102 MT108 103...

Page 2: ...103 3 TECHNICAL SPECIFICATIONS 3 DESCRIPTION OF MT108 102 103 4 APPLICATION DIAGRAM 4 INSTALLING YOUR MT108 102 103 6 OPERATION FOR MT108 103 ONLY 6 7 1 RS 232 CONTROL 6 7 2 DESCRIPTION OF COMMANDS 6...

Page 3: ...ly the connector area with a dry cloth Never use strong detergents or solvents such as alcohol or thinner Do not use a wet cloth or water to clean the card Do not clean or touch any component or PCB 1...

Page 4: ...to independently turn on or off each output under the control of RS 232 commands sent to the Multi Tasker enclosure TECHNICAL SPECIFICATIONS 3 FEATURES DESCRIPTION MT108 102 103 GENERAL Inputs Input C...

Page 5: ...MULTI TASKER 4 DESCRIPTION OF MT108 102 103 4 APPLICATION DIAGRAM 5 Application 1...

Page 6: ...MULTI TASKER 5 Application 2 Internal View of the MT108 102 103 Card...

Page 7: ...through standard RS 232 communication The actual control may be performed using a computer control system or any other device capable of sending RS 232 commands 7 1 1 RS 232 INTERFACE The RS 232 comm...

Page 8: ...4 C04 Saved 4 SIG The Signal Present command tests for the presence of a signal on the input After sending the command the feedback will be either 1 signifying a signal is present or a 0 indicating n...

Page 9: ...gle card or a group of cards OFFmCnUi for a single card This command disables output m without affecting any other outputs m output number m 1 to 4 n card ID No n slot from 1 to 19 i Unit ID number i...

Page 10: ...inputs and outputs which were previously set with the PATH command on this card and all other cards in the MT100 100 11 HELP This command displays all information available for user Multi Tasker inte...

Page 11: ...1 9 i unit number i from 0 9 Example To read member data for group 1 of unit 1 send the RD command The system will return feedback as C1C2C3 G5U1 7 3 SUMMARY OF COMMANDS 1 VER Receives software versio...

Page 12: ...s working at an appropriate volume level and all source connections are correct If the source is working and there is still no sound see Cause 2 Cause 2 The card output is turned OFF Solution 1 Turn O...

Page 13: ...t connections are wired properly to verify that there is good signal transmission Note Test the system by removing the MT108 102 103 card from between the source and the destination amplifier If the p...

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