Grass Valley Kayak HD Installation v.6.9.4 Jun 02 2011 - Manual (Page 121)

Kayak HD — Installation and Service Manual 121
Install Menus Reference
Install - GPO Menu
GPO Output contact closures are used by the Kayak HD system for simple
trigger control of external devices. See Installation Manual for pinout and
voltage specifications.
In this Install-GPO menu the physical properties of up to 128 GPO channels
can be adjusted.
Figure 77. Install - GPO Menu
To program a GPO, select the GPO input to program from the scrolling list
in the central pane. Then select
Modify … to change the parameters:
Shape: Pulse / Static
Idle State: open / closed
Pulse Duration: Enter the preroll time in frames (max 255 frames)