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20. External Device Connection
20-1. GPI IN/OUT and Tally Outputs
The switcher can control external devices or can be controlled by external devices via the GPI
interface.
20-1-1. GPI IN/TALLY OUT Connector
Pin Assignment Table (25-pin D-sub, female, with inch screws)
Pin No.
Description
1
BKGD AUTO TRANS (input) (default setting)
2
KEY1 AUTO TRANS (input) (default setting)
3
KEY2 AUTO TRANS (input) (default setting)
4
DSK1 AUTO TRANS (input) (default setting)
5
DSK2 AUTO TRANS (input) (default setting)
6-24
No assignment (default setting)
25
Frame ground
GPI IN Circuit
Open Collector or no-voltage contact input
GPI OUT/ TALLY OUT Circuit
Relay contact output (Max. load voltage: 40 VDC, max. load current: 100 mA)
External Device
Max voltage: 40V
Switcher
Max load current:
100mA
Switcher
VCC
VCC
External Device
Open Co
ll
ector
Switcher
VCC
VCC
External Device
Switch or Relay