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448 INPUTS X 15 OUTPUTS - With Video Loss Detection
Level 1 - 2 Bays with AD1981 Port Expander
A21
DATA
LINE
120
VAC
50/60
Hz
11
11
11
11
55
55
22
22
55
55
77
77
44
44
33
33
33
33
11
11
22
22
44
44
11
11
DATA LINE
IN
OUT
DATA LINE 1
AD2010R AD2010R
PORTS
DATA LINE
12
PROG MON
12
3456789 10
AD1024 CPU
IN
OUT
To
CPU
AD1981
DATA LINE
5
4
7
54
7
54
7
DO NOT CONNECT TO TELEPHONE CIRCUITS