GRASS VALLEY KAYAK HD, Installation Planning Manual, Page: 49 / 60

Kayak HD — Installation Planning Guide 45
GPI / Tally Connections
To activate a GPI In you must provide switch closure between a particular
GPI In pin and one of the two GPI In Com pins (Pins 1 and 34).
GPI Input Structure
Figure 28. GPI Input Connections (Typical 2 of 8 connections)
Pins 1 and 34 of each of the two (four) connectors are connected to ground.
For applications that span across more than one connector, only one
ground (common) connection is required.
50-pi n Co nn ecto r
Pi n N u mbe rs
Opto I s olato r
(1 of 8)
GPI 1
GPI 5
+ 3.3 V
Ope n
Collecto r
18
35
19
36
20
4
1
34
3
2
150 ohm
Opto I s olato r
(5 of 8)
G r o un d a n d
Cha ss i s
Kayak HD F r ame U s e r Eq u ipme n t
+ 3.3 V
150 ohm
8448_08
r
0