Appendix
A-23
Appendix
X.21 (A/B) connector (female)
Half-pitch 36-pin connector
Pin
Signal
Description
Pin
Signal
Description
1
SGND
Signal ground
19
SGND
Signal ground
2
SGND
Signal ground
20
SGND
Signal ground
3
CABLE1
Cable1
21
CABLE2
Cable 2
4
X21T+
Send data +
22
NC
5
X21T–
Send data –
23
NC
6
X21R+
Send data +
24
NC
7
X21R–
Send data –
25
NC
8
NC
26
NC
9
NC
27
NC
10
X21S+
Signal
28
NC
11
X21S–
Signal timing –
29
NC
12
X21I+
Indi
30
NC
13
X21I–
Indication –
31
NC
14
X21C+
C
32
NC
15
X21C–
Control –
33
NC
16
SGND
Signal ground
34
SGND
Signal ground
17
SGND
Signal ground
35
SGND
Signal ground
18
SGND
Signal ground
36
SGND
Signal ground
D-sub 15-pin connector (cable side)
Pin
Signal
Description
Pin
Signal
Description
1
NC
9
X21T–
Send data –
2
X21T+
Send data +
10
X21C–
Control –
3
X21C+
C
11
X21R–
Receive data –
4
X21R+
Receive data +
12
X21I–
Indication –
5
X21I+
Indi
13
X21S–
Signal timing –
6
X21S+
Signal
14
NC
7
NC
15
NC
8
SGND
Signal ground
–
–
–
D-sub 15-pin connector
PCS-K70 X.21 Conversion
Connector Cable
to Rollabout Processor
(Cable side)
(Rollabout Processor)
9
1
15
8
18
1
36
19
Содержание PCS-5100
Страница 8: ...Features 8 Features ...