X.21 interface
71
Model 3088A Series User Manual
E • Interface pinouts
X.21 interface
D-sub-15 female connector (DTE/DCE orientation)
Ethernet Console port
Note
Pins not listed are not used.
Pin #
Signal
1
Frame Ground
2
T - Transmit Data-A (DTE Source)
3
C - Control-A (DTE Source)
4
R - Receive Data-A (DCE Source)
5
I - Indication-A (DCE Source)
6
S - Signal Element Timing-A (DCE Source)
7
BT - Byte Timing-A (DCE Source)
X - DTE Signal Element Timing - A (DTE source)
8
SGND - Signal Ground
9
T/ - Transmit Data-B (DTE Source)
10
C/ - Control-B (DTE Source)
11
R/ - Receive Data-B (DCE Source)
12
I/ Indication-B (DCE Source)
13
S/ Signal Element Timing-B (DCE Source)
14
BT/ - Byte Timing-B (DCE Source)
X/ - DTE Signal Element Timing - B (DTE source)
Table 10. RJ45 socket 10/100Base-T
Pin
Signal
1
TX+
2
TX-
3
RX+
6
RX-
