Crystal Vision
General Purpose Interface
Alarms
GPI Out 5 and 6 (e, f) can be configured to be asserted (logic ‘L’) for a selection of error
conditions.
For each GPO there are a maximum of 35 separate alarm conditions. The following table lists
the maximum number of alarms available. Some alarm conditions are not available if the
optional AES DIOP4 piggyback(s) are not fitted. See
alarms.
Reportable error conditions
No. of
alarms
Video Missing
1
Video Black
1
Video Frozen
1
Input groups 1-4 missing
4
Channel pair silent for all groups
8
Channel pair has Dolby E encoding present for all groups
8
AES channel pair input missing for all fitted DIOP4 piggybacks
4 (max)
AES channel pair input silent for all fitted DIOP4 piggybacks
4 (max)
AES channel pair has Dolby E encoding for all fitted DIOP4 piggybacks
4 (max)
Alarms Table
2U frame GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to two of four rear remote connectors as follows:
Slot no. ‘a’ pin
‘b’ pin
‘c’ pin
‘d’ pin
‘e’ pin
‘f’ pin
1
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)
Table shows pin number (remote number)
Note
:
Remote 1 and Remote 3 are 26-way high-density D-Type female sockets. Frame
ground is pin 2 and +5V @500mA is pin 1 in each case.
Remote 2 and Remote 4 are 26-way high-density D-Type male plugs and frame
ground is pin 6 in each case and +5V @500mA is pin 15 on Remote 2.
Note: The +5V output is protected by self-resetting thermal fuses, which limit the
total output current available from Remotes 1-4 to approximately 1A.
TANDEM 320 User Manual R1.3
16
11 July 2019
