Installation
10
HT800 Series VTR and Disk controller
Installing the GPI I/O option
The HT8823 GPI interface option provides 4 GPI
inputs and 4 GPI outputs. To install the GPI interface
proceed as follows:
Remove the power cord
Remove base chassis – 4 screws each corner
Remove the rear option-slot cover
Fit the GPI interface into the vacant option-slot
and refit base chassis
Insert the power cord
GPI interface pinout
Pin No
Description
25 way female ‘D’ connector
13, 25
Chassis Gnd
11, 23
12V out
10, 22
12V in
14
GPI - A
15
GPI - B
16
GPI - C
17
GPI - D
5 - 9, 12 Not Used
1
Trigger - A
2
Trigger - B
3
Trigger - C
4
Trigger - D
18 - 21
Not Used
