Digital Equipment RouteAbout Access EW, Руководство по установке

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B-2 Connector and Pin Assignments
Table B-1 X.21 Cable Connections (BC12F-06, 17-03580-01)
From Pin Connector (P1) To X.21 Pin Connector
(P2) Signal Name
1, 2, 26 – Code Ground
1
5 2 T(A) TX Data A
30 9 T(B) TX Data B
6 5 I(A) DCD A
31 12 I(B) DCD B 2
8 3 C(A) RTS A
33 10 C(B) RTS B
10 4 R(A) RX Data A
35 11 R(B) RX Data B
2
17 6 S(A) TX Clock A
42 13 S(B) TX Clock B 2
13, 15 – RX Clock A
DTE Clock A 1
38, 40 –
RX Clock B
DTE Clock B
1
37 8 G DTE Ground
1 Contacts tied together.
2 120 OHM resistor, 1/2w between pins 6 and 31, 10 and 35, 17 and 42. The
resistors are located at the P1 end of the cable.