TECHNICAL MANUAL
CVM 2
C 5001 CV/04-99 GB
7
LOCAL
REMOTE
1.5
Serial connections
8-pin, TTL telephone-type connector.
1.6
Keyboard
It is connected to the following terminals, as indicated in the figure below:
KEYBOARD TERMINALS
MAIN BOARD TERMINALS
4
28
3
29
1
31
2
32
Figure 1-1 KEYBOARD CONNECTION
1.7
Remote keyboard
Figure 1-2 REMOTE KEYBOARD CONNECTION
NB
: The supplementary transformer is the 230/12 Vac transformer supplied with the remote keyboard kit.
The maximum length of the remote keyboard’s AWG24-type serial cable is 50 metres.
BASE CVM 2
1
12Vac
31
2
12Vac
32
3
Current loop
è
29
4
ç
Current loop
28
BASE CVM 2
1
12Vac
31
2
12Vac
32
3
Loop
è
29
4
ç
Loop
4
28
3
1 12Vac (from supplementary
transformer)
2 12Vac (from supplementary
transformer)