MULTI-TASKER™
3
3
ABOUT YOUR MT109-100
2
MT109-100
8-in 1-out Stereo Audio Switcher Card
The
MT109-100
is a Stereo Audio Switcher Card
designed for use with the MultiTasker™. When
installed in the Basic Enclosure (MT100-100), this
card allows the connection of six stereo audio
sources to a single receiving device, such as a
cassette recorder, mixer, and/or amplifier for sound
reinforcement.
Inputs are selected via easy-to-use ASCII
commands from a control system or computer
connected to the RS-232 port of the MultiTasker™
Basic Enclosure. While the
MT109-100
can accept
only unbalanced audio inputs, the output can be
wired for either balanced or unbalanced audio.
The
MT109-100
is primarily designed to utilize the
inputs and output offered on the connector panel.
However, it also offers a "hidden" feature that
enables access to the MultiTasker signal bus. The
signal bus spans the width of the MultiTasker
Basic Enclosure along the back plane of the unit.
Through RS-232 control, the
MT109-100
can send
or receive stereo audio signals to or from this bus,
from any of the applicable cards in the enclosure.
This feature can be used in a variety of ways to
expand the capabilities of the card. For example,
two
MT109-100
cards can be installed in the
MultiTasker and the output of one can be routed to
an input of the other, creating a 15-input 1-output
switcher. Note that the signal bus handles only one
stereo audio signal path at a time.
TECHNICAL SPECIFICATIONS
3
FEATURES/DESCRIPTION
MT109-100
GENERAL
Inputs
Input Connectors
(8) 3.5mm stereo
audio jack
Outputs
Local Monitor Output
Connector
(1) 5-pin Terminal
Block
Compatibility
Stereo or Mono Audio
Table 1.
MT109-100
General
MECHANICAL
MT109-100
Basic 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.)
55,000 hrs
Table 2.
MT109-100
Mechanical
ELECTRICAL
MT109-100
Input Signals
Max Level
0 dBu
Impedance
10k Ohms
Audio Throughput
Gain
0 dB unbalanced,
6dB balanced
Frequency Response
10 Hz to 20 kHz
(+/- 0.05 dB)
Noise Floor
-100 dB @ 20 kHz
CMRR
>80 dB, 10 Hz to 20 kHz
Output Signals
Level
1V p-p
Impedance
Low – drives 600 Ohms
Gain
0 dB
Power
Power from
MT100-100
+6V
-6V
+13V -13V
Power
Consumption
MT109-100 20
mA
20
mA
25
mA
22
mA
0.85 watts
Table 3.
MT109-100
Electrical
