USER MANUAL
16
| HCO-3931
The
GPIO
interface is implemented on an HD-15 connector. The pinout is as follows:
GPIO Label
Pin #
GPI-IN-MAIN
4
GPI-IN-BACKUP
9
GPI-IN-EMERGENCY1
3
GPI-IN-EMERGENCY2
8
GPI-IN-BYPASS
6
GPI-IN-AUTO
10
GPI-OUT-MAIN
1
GPI-OUT-BACKUP
7
GPI-OUT-EMERGENCY1
2
GPI-OUT-EMERGENCY2
12
GPI-OUT-BYPASS
11
GPI-OUT-AUTO
5
GPI-IN-PWR
15
GND
13,14
Note: You
may find it convenient to purchase Grass Valley’s NSH15M HD15-to-terminal-block adapter, which
provides easy access to the GPIO pins.
Using the GPIO interface
Trigger the GPI-IN-MAIN, GPI-IN-BACKUP, GPI-IN-EMERGENCY1, or GPI-IN-EMERGENCY2 pin to select that
input.
Trigger the GPI-IN-AUTO or GPI-IN-BYPASS pin to select that mode.
Read the GPI-OUT- MAIN, GPI-OUT- BACKUP, GPI-OUT- EMERGENCY1, GPI-OUT- EMERGENCY2 pins to
identify which output is selected (“0” indicates selection).
Read the GPI-OUT-AUTO and GPI-OUT-BYPASS pins to determine whether either of these modes is in
operation (“0” indicates selection).
Note:
When a
GPIO
input is triggered, the card switches to the input selected by the
GPIO
input. It may then change
operating mode, depending on the
GPIO
input selected, the card’s switch configuration (see 3.4.4 - The Switch
Configuration panel on page 38) and the
card’s current operating mode (see 3.4.2 - The Switch Control panel on page
Input
Card is in Auto mode
Card is in Bypass mode
GPI-IN-MAIN
Enter Manual Mode if so configured
Enter Manual Mode if so configured
GPI-IN-BACKUP
Enter Manual Mode if so configured
Enter Manual Mode if so configured
GPI-IN-EMERGENCY1
Enter Manual Mode if so configured or if this
input is excluded from the automatic rules
engine
Enter Manual mode
GPI-IN-EMERGENCY2
Enter Manual Mode if so configured or if this
input is excluded from the automatic rules
engine
Enter Manual mode
