Figure C-4 X.21 Cables X890-401011 and X890-408811
15-Way D-Type
Plug
15-Way D-Type
Socket
C(A)
C(B)
S(A)
S(B)
T(A)
T(B)
R(A)
R(B)
I(A)
I(B)
SGND
3
10
6
13
2
9
4
11
5
12
8
C(A)
C(B)
S(A)
S(B)
T(A)
T(B)
R(A)
R(B)
I(A)
I(B)
SGND
3
10
6
13
2
9
4
11
5
12
8
PIM
X870-300451 Issue 2 C-6 Rev.0
