Datavideo SE-4000 8-Channel 4K Video Switcher - Manual (Page 120)

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Appendix 2 GPI / GPO Connections
The SE-4000 can control external recorder/playback devices like the HDR-80 and HDR-90 via
a simple contact closure GPI / GPO switch.
The GPI interface is a 3.5mm Jack Socket which is situated on the rear panel of the SE-4000.
Contact closure between the Outer and Inner contacts on the jack plug will trigger a user
selected event. Power is supplied by the SE-4000 and is less than 5V DC.
This GPI socket can also be used as a GPO socket to trigger record or playback events with
other equipment such as the Datavideo HDR-80 or HDR-90 recorder.
SAFETY FIRST The cabling required needs to be designed specifically to connect the SE-4000
to the chosen record or playback device as they are not all the same. The cabling required can
be made by yourself or a competent technician. Please speak with your Dealer or local
Datavideo office to get further help and advice.