Serial Port Cable 59
Figure 34 X.21 DTE Cable Assembly
Table 35 describes X.21 DTE cable pinouts.
X.21 DCE Cable Pinouts Figure 35 illustrates the X.21 DCE cable.
Figure 35 X.21 DCE Cable Assembly
Table 36 describes X.21 DCE cable pinouts.
Tab le 35 X.21 DTE Cable Pinouts
DB50 Signal Signal Direction Signal DB15
7 GND <--> Circuit GND 8
23 DTE/DCE - Circuit GND 8
50 GND <--> Shield GND 1
10 RTS/CTS+ -> Control+ 3
34 RTS/CTS- -> Control- 10
38 CTS/RTS+ <- Indication+ 5
14 CTS/RTS- <- Indication- 12
20 RXD/TXD+ <- Receiver+ 4
44 RXD/TXD- <- Receiver- 11
15 TXD/RXD+ -> Transmit+ 2
39 TXD/RXD- -> Transmit- 9
19 RXC/TXCE+ <- Timing+ 6
43 RXC/TXCE- <- Timing- 13
- Shielding sheath <--> Shielding sheath -
Tab le 36 X.21 DCE Cable Pinouts
DB50 Signal Signal Direction Signal DB15
7 GND <--> Circuit GND 8
50 GND <--> Shield GND 1
10 RTS/CTS+ -> Indication+ 5
34 RTS/CTS- -> Indication- 12
38 CTS/RTS+ <- Control+ 3
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