Crystal Vision
Hardware installation
DDA108A-BP User Manual R1.0
7
25/02/10
3.2 General purpose interface
The external GPI control lines 'a' to 'f' at the frame remote connectors are provided to
allow remote control and/or remote status indication. Line 'a' is assigned as a GPI output
to provide remote indication of input presence.
The GPI output is fitted with 6k8
Ω
pull-up to +5V and 270
Ω
series resistor so it can drive
an LED directly. If the series resistor is shorted out, it can drive a bulb at +45V 500mA
max.
GPI Connections
Open
Connect to ground
‘a’
Input Present
Input Absent
‘b’
Not assigned
Not assigned
‘c’
Not assigned
Not assigned
‘d’
Not assigned
Not assigned
‘e’
Not assigned
Not assigned
‘f’
Not assigned
Not assigned
The following tables show the GPI pinout for each frame:
4U frame GPI Connections
GPI lines ‘a’ to ‘f’ of each card connect to two of eight rear remote connectors as follows:
Slot no.
‘a’ pin
‘b’ pin
‘c’ pin
‘d’ pin
‘e’ pin
‘f’ pin
1
Upper
8 (1)
9 (1)
18 (1)
26 (1)
19 (2)
20 (2)
2
7 (1)
16 (1)
17 (1)
25 (1)
10 (2)
11 (2)
3
8 (3)
9 (3)
18 (3)
26 (3)
19 (4)
20 (4)
4
7 (3)
16 (3)
17 (3)
25 (3)
10 (4)
11 (4)
5
5 (1)
6 (1)
15 (1)
24 (1)
1 (2)
2 (2)
6
4 (1)
14 (1)
13 (1)
23 (1)
3 (2)
4 (2)
7
5 (3)
6 (3)
15 (3)
24 (3)
1 (4)
2 (4)
8
4 (3)
14 (3)
13 (3)
23 (3)
3 (4)
4 (4)
9
3 (1)
12 (1)
22 (1)
21 (1)
12 (2)
13 (2)
10
10 (1)
11 (1)
19 (1)
20 (1)
21 (2)
22 (2)
11
3 (3)
12 (3)
22 (3)
21 (3)
12 (4)
13 (4)
12
10 (3)
11 (3)
19 (3)
20 (3)
21 (4)
22 (4)
