Matrox Electronic Systems 4SIGHT-M - Manual (Page 35)

Connecting a stereo audio device 35
The output of a TTL device can be connected directly to an input on the auxiliary
I/O. The input of a TTL device can be connected directly to an output on the
auxiliary I/O; however, you will need to add a pull-up resistor to this connection
(connected at 5 V).
Connecting non-TTL
devices
The output of a non-TTL device (up to a maximum of 24 V) can be connected
directly to an input on the auxiliary I/O. The input of a non-TTL device can be
connected directly to an output on the auxiliary I/O. You might need to add a
pull-up resistor to this connection (connected at 5 V). Refer to the vendor
specifications for your non-TTL device for more information.
To connect non-TTL devices to the external auxiliary I/O interface connector,
you need a custom cable with a DBHD44 connector.
Important Voltage requirements for external devices connected to the auxiliary connector
module should not exceed 24 V.
Connecting a stereo audio device
You can connect a stereo audio device to the audio input and output jacks, using
a 1/8” mini audio input/output plug. The audio interface is only designed for line
input/output operations. Because there is no output amplifier or input
preamplifier, the interface will not support speakers nor microphones.
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