The Triggers

6.8.2Digital Output

The digital output function is defined by the pull-up setup:

Without Pullup: The port will act as a solid state relay (open/close functions) The GPI/O maximum voltage is 30V DC and the maximum current is 50mA

With Pullup: the port can be used as a TTL positive logic output (open: ~2.4V; closed:~0.2V)

Setting the Digital Output

Define the GPI/O in the port manager:

Once defined as Digital Output, the GPI/O port will appear in Port Switch ->port list, and can be used like any other relay:

Figure 92: The GPI/O Defined as Digital Output

6.8.3Analog Input

The analog input accepts an analog signal from an auxiliary device:

The pullup and threshold features are disabled.

The trigger is activated once when the voltage is within a certain range of voltages. To add a GPI/O Trigger:

1.Click the Add GPI/O Trigger button. The following window appears:

Figure 93: The GPI/O Trigger Properties Window

2. Select the trigger behavior:

46

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Page 53
Image 53
Kramer Electronics Revision 6 manual Select the trigger behavior, GPI/O Defined as Digital Output