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MULTI-TASKER™
400-0343-003
3
3
ABOUT YOUR MT109-102 2
MT109-102
3 in 1 out Audio Mixer Card
The MT109-102 is a Stereo Audio Mixer Card.
When installed in the Basic Enclosure
(MT100-100), this card allows connection of up to
three line level balanced or unbalanced
microphone inputs.
Mixing of inputs is controled via easy-to-use ASCII
commands from a control system or computer
connected to the RS-232 port of the MultiTasker™
Basic Enclosure. The MT109-102 can accept
balanced or unbalanced audio inputs and the
output can be wired for either balanced or
unbalanced audio output.
Through RS-232 control, the MT109-102 can be
controlled to adjust the signal level of each input in
16 steps. In addition the volume, treble and bass
of the output amplifier can be adjusted in 16 steps.
All three inputs to the amplifier are mixing inputs
and can be adjusted from 0db to –60db.
Phantom Power +12V can be connected to the
microphone input using a dip-switch located on the
PCB.
TECHNICAL SPECIFICATIONS 3
FEATURES/DESCRIPTION MT109-102
GENERAL
Inputs
Input Connectors (3) Terminal Blocks
Input 1
Balanced/Unbalanced
Microphone Input
Input 2
Balanced/Unbalanced
Microphone Input
Input 3
Balanced/Unbalanced
Microphone Input
Outputs
Output Connector (1) Terminal Block
Output Line Level
Balanced/Unbalanced
Compatibility Stereo or Mono Audio
Table 1. MT109-102 General
MECHANICAL MT109-102
Basic Enclosure Slots
Required
One Slot
Weight 0.43 lb (0.19 kg)
Connector Panel Black
T° Operating 10°C-50°C
T° Maximum 75°C
Humidity 90% non-condensing
MTBF (calc.) 55,000 hrs
Table 2. MT109-102 Mechanical
ELECTRICAL MT109-102
Input Signals
Max Line Level Input 0 dBu (.7V p-p) 10k Ohms
Max microphone Input -65dBu (2-10mv) 47 Kohm
Frequency Response
10 Hz to 20 kHz
(+/- 0.5 dB)
Noise Floor -97 dB @ 20 kHz
Table 3. MT109-102 Electrical