background image

                                                         MULTI-TASKER

3

ABOUT YOUR MT108-104/(105)

2

MT108-104/(105)
4-in 4-out Stereo Audio Line Driver
Cards

The 

MT108-104/(105) 

is a Stereo Audio Line

Driver Card designed for use with the Multi-
Tasker

 system. When installed in a Multi-

Tasker

, this card allows the connection of four

stereo audio sources to four receiving devices,
which can include cassette recorders, mixers,
and/or amplifiers for sound reinforcement systems.

These cards are ideal for distributing audio to
recording devices in dubbing racks using simple
off-the-shelf cables. As an example, the 

MT108-

104/(105) 

can distribute audio to four cassette

recorders or it can handle the audio portion of A/V
distribution to four VCRs.

As a “transparent” line driver, these cards utilize
AC coupling on their inputs for ideal signal transfer
characteristics.  The power indicator on the card is
a red LED indicating the board has power applied.
These cards consume one slot each.

TECHNICAL SPECIFICATIONS

3

FEATURES/DESCRIPTION

MT108-104/(105)

GENERAL
Inputs

4

Input Connector

Four 3.5mm stereo mini

Female audio jacks

Outputs

4

Output Connector

Four 3.5mm stereo mini

Female audio jacks

Compatibility

Stereo Audio

Table 1.

 MT108-104/(105)

 

General

MECHANICAL

MT108-104/(105)

Enclosure Slots Required

One

Weight

1.0 lb. (0.45 kg)

Connector Panel

Black

T° Operating

10°C-40°C

T° Maximum

0 to 50°C

Humidity

90% non-condensing

MTBF (calc.)

45,000 hrs

Table 2. 

MT108-104/(105)

 

Mechanical

ELECTRICAL

MT108-104/(105)

Input Signals

Max Level

0 dBu

Impedance

600 Ohms

Audio Throughput

Gain

0 dB

Frequency Response

10Hz to 20kHz (+/- 0.05 dB)

Noise Floor

-100 dB @ 20 kHz

CMRR

>80 dB, 10 Hz to 20 kHz

Output Signals

Level, Each Channel

1V p-p

Impedance

600 Ohms

Gain

0 dB

Power

Power from
MT100-100

+6V

-6V

+13V

-13V

Power

Consumption

MT108-104 15mA

-

30mA 20mA

0.74 watts

MT108-105 20mA

-

45mA 35mA

1.04 watts

Table 3.

 MT108-104/(105)

 Electrical

Summary of Contents for MULTI-TASKER MT108-104

Page 1: ...MULTI TASKER MANUAL PART NUMBER 400 0178 002 MT108 104 MT108 105 4 IN 4 OUT STEREO AUDIO LINE DRIVER CARDS FOR MULTI TASKER USER S GUIDE TM MT108 104 is shown above...

Page 2: ...MT108 104 105 3 TECHNICAL SPECIFICATIONS 3 DESCRIPTION OF MT108 104 105 4 APPLICATION DIAGRAM 4 INSTALLING YOUR MT108 104 105 6 OPERATION 6 7 1 RS 232 CONTROL 6 7 2 DESCRIPTION OF COMMANDS 6 7 3 SUMM...

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: ...r on the card is a red LED indicating the board has power applied These cards consume one slot each TECHNICAL SPECIFICATIONS 3 FEATURES DESCRIPTION MT108 104 105 GENERAL Inputs 4 Input Connector Four...

Page 5: ...MULTI TASKER 4 DESCRIPTION OF MT108 104 105 4 APPLICATION DIAGRAM 5 Application 1...

Page 6: ...MULTI TASKER 5 Application Diagram 2 Internal View of the MT108 104 105...

Page 7: ...control may be accomplished using a computer control system or any other device capable of sending RS 232 commands 7 1 1 RS 232 INTERFACE The RS 232 commands for the MT108 105 are in a simple ASCII ch...

Page 8: ...t 2 of unit 3 the Multi Tasker Basic Enclosure will not return any feedback 3 CiS This command saves the current status of the card s output volume configuration This configuration will be restored af...

Page 9: ...d VOL1A16C4 will set the volume of output 1 to the maximum level of 16 7 CLR Card The command clears all volumes to maximum for a single card With this command 200ms is needed for execution Insert a 2...

Page 10: ...d MT108 104 105 however we would like to offer suggestions for the following 8 1 LED IS NOT LIT 8 2 NO SOUND 8 3 SOUND DISTORTION 8 4 SOUND LEVEL IS LOW 8 1 LED IS NOT LIT Cause 1 Card cage is not plu...

Page 11: ...tion amplifier provides excessive amplification Solution 1 Make sure that the source level is high enough so the destination amp does not have to provide excessive amplification thereby distorting the...

Reviews: