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MULTITASKER™
400-0095-005
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
which allows the connection of 8 stereo audio
sources to a single receiving device, such as a
cassette recorder, mixer, and/or amplifier for sound
reinforcement.
Inputs are selected through easy-to-use ASCII
commands from a control system or computer
connected to the RS-232 port of the MultiTasker
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 special feature that
enables the MT109-100 to send or receive stereo
audio signals to or from another MT109-100.
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-In, 1-Out
switcher.
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
75
mA
20
mA
46
mA
40
mA
1.7 W
Table 3. MT109-100 Electrical