Agilent Technologies 6890 Series

5 of 10
Jun 2001
Electrical
Agilent 6890 Gas Chromatograph Service Manual
External Connectors, 6890N 1215
RS-232
RS-232
Figure 1215-5 RS-232 connection
S
A
M
P
L
E
R
2
T
R
A
Y
S
I
G
1
S
I
G
2
E
V
E
N
T
B
C
D
R
S
/
2
3
2
R
E
M
O
T
E
LAN
S
A
M
P
L
E
R
1
S
A
M
P
L
E
R
1
S
I
G
1
S
I
G
1
R
S
/
2
3
2
JP1, RS-232
Pin Function
1 DCD
2 RxD
3 Tx D
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 unused
1
6
Tran sm itt er s
Receivers
5
9
RS-232 Standard wiring
3 TxD
7 RTS
4 DTR
2 RxD
8 CTS
6 DSR
1 DCD
5 GND
1
2
3
4
5
6
7
8
9
RS-232 Loop back wiring
RS-232