Grass Valley Kayak HD Installation v.6.8.8 - Manual (Page 118)

118 Kayak HD — Installation and Service Manual
Section 3 — Configuration
Install - GPI Menu
GPI Inputs can be used by an external device to trigger an action on the
Kayak HD system. See Installation Manual for pinout specifications.
The GPI In menu allows programming up to 32 system GPI inputs. Various
actions can be performed when a GPI contact closes, including selecting a
source on a bus, recalling an E-MEM, and triggering a transition.
In this Install-GPI menu the physical properties of each GPI channels can be
adjusted.
Figure 76. Install - GPI Menu
To program a GPI, select the GPI input to program from the scrolling list in
the central pane. Then select
Modify to determine whether the rising or
falling edge of the arriving signal GPI1 ... GPI32 is to be used.
Note A GPI is considered Active when current flows through the LED of the opto-
coupler at the GPI input. When no current flows the GPI is Inactive. Hence a
Rising edge is the transition from Inactive to Active, and a Falling edge is the
transition from Active to Inactive.