Connecting to the auxiliary I/O interface 37
Connecting an auxiliary output signal to a sinking input using an external
pullup resistor
You can also connect an auxiliary output signal to a sinking input as follows. Note
that, in this configuration, you will need to connect an external pullup resistor.
Since your Matrox
4Sight EV6 auxiliary output signals can sink up to 100 mA,
use the documentation for your sinking device to calculate the required resistance
for your external pullup resistor (if necessary).
Note that, when connecting a resistive load sourcing device instead of an input
sensing sourcing device, the same connection would be used as displayed above.
Equivalent circuit only
Up to 24V
+
–
AUX_OUTn+
AUX_OUTn-
Matrox 4Sight EV6 in a
sourcing configuration
Device with a
sinking input
COM
INPUT
Input
sensing
Optional because the auxiliary output signals are isolated.electrically
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