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Connecting to a
device that only
accepts TTL signals
- When connecting to a third-party device that only accepts TTL signals, add an
external voltage divider between the third-party device and your Matrox
Breakout Box module. Connect the voltage input wire of your external voltage
divider to the 24 V wire-terminal and the ground of your voltage divider to the
GND wire-terminal of the Matrox Breakout Box module. Select a voltage
divider whose resistors reduce the voltage such that the connected third-party
device receives 5 V.
External voltage
divider
Matrox
Breakout Box
Direct output
connector
Note that resistors rated for ¼ W are recommended, since they can handle
❖
the expected power.
If using a different voltage source than the 24 V output of the Matrox
Breakout Box module, replace 24 V in the above formula accordingly. If the
external voltage source is 5 V, use a pull-up resistor instead of a voltage divider.
Routing output signals from your Matrox camera
R
2
×
------------------ -
V
=
24V
0
R
+
R
1
2
Third-party device
5 V V
0
800 Ω
3 KΩ
R
R
1
2
J2
Output
0-500 mA
open collector
25
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