D-2. Cable Connections; D-3. Electrical Characteristics - Oki OKIPOS 407 Guia Del Usuario

D-2. Cable Connections

The followings are a recommended interface cable connections.
Printer side
(D-sub 25 pin)
FG 1
TXD 2
RXD 3
RTS 4
5
CTS
DSR
6
7
SG
DTR 20
25
INIT
Note Use shielded wire less than 3m in length.
Printer side
(D-sub 9 pin)
NC 1
RXD 2
TXD 3
DTR
4
SG 5
DSR 6
RTS 7
CTS 8
NC 9
Note Use shielded wire less than 3m in length.

D-3. Electrical Characteristics

Voltage Data signal
-3V to -15V
+3V to +15V
Control signal
Mark OFF
Space ON
Host side
25 pin
1
2
3
4
5
6
7
8
20
Host side
9 pin
2
3
7
5
8
6
1
4
Binary status
1
0
– 138 –
9 pin
FG
3 TXD
2 RXD
7 RTS
8 CTS
DSR
6
5 SG
1 DCD
4 DTR
25 pin
FG
1
3 RXD
2 TXD
4 RTS
SG
7
5 CTS
6 DSR
8 DCD
20 DTR