Grass Valley Kayenne XL Package v.7.0.4 - Manual (Page 299)

Kayenne XL Package — User Manual 297
Install Menu
GPI Page
The purpose of the GPI In pins is to provide a stimulus from the customer's
equipment to the switcher.
A simple connection to the two connectors (or four in the case of the 8 RU
frame) activates the corresponding input. This kind of control is suitable for
a connection to a relay contact or to an open-collector output.
WARNING When connecting to an open-collector output, there is no ground potential
isolation between the Video Processor frame and controlling devices.
Since the circuit ground is led out of the device, the cabling has to be
shielded for this kind of control. Non-shielded cables may cause EMC
and/or ESD problems.
To activate a GPI In, you must provide switch closure between a particular
GPI In pin and one of the two GPI In Com pins.
The function of each GPI input is user assignable. The activation of the
function can be programmed to occur on the leading (rising) edge or the
trailing (falling) edge of the closure, or both edges. The switch must be
closed for at least one field.
The GPI menu page serves for modifying the GPI parameters.