Ttl/Relay Interface - AVT MAGIC ACX Dante WAN Hardware Manual

3.3

TTL/Relay interface

The TTL/relay interface is realised as a 25-pin socket. It provides eight TTL
inputs/outputs as well as eight relay contacts.
Pin assignment: TTL/Relay interface
Socket: SUB-D 25-pin
Pin Signal
1 TTL 1
2 TTL 2
TTL 3
3
4 TTL 4
TTL 5
5
6 TTL 6
TTL 7
7
8 TTL 8
RELAY 4 (B)
9
10 RELAY 5 (B)
11 RELAY 6 (B)
RELAY 7 (B)
12
13 RELAY 8 (B)
RELAY 1 (A)
14
15 RELAY 1 (B)
GND
16
17 RELAY 2 (A)
RELAY 2 (B)
18
19 RELAY 3 (A)
20 RELAY 3 (B)
RELAY 4 (A)
21
22 RELAY 5 (A)
RELAY 6 (A)
23
24 RELAY 7 (A)
RELAY 8 (A)
25
NO = normally open contact
NC = normally closed contact
Electrical characteristics
input/output
input/output
input/output
input/output
input/output
input/output
input/output
input/output
output, NO
output, NC
output, NC
output, NO
output, NO
output, NC
output, NC
output, NC
output, NC
output, NO
output, NO
output, NO
output, NC
output, NC
output, NO
output, NO
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