C1300
Advanced Circular Chart Recorder
2 Electrical Installation
4
IM/C1300–MOD
Rev. C
Fig. 2.2 Pull-up and Pull-down Resistors (5-wire Operation)
1
2
7
8
9
3
4
5
6
Rx+
Rx
Tx+
Tx
Computer Terminal or Host Computer
Serial Module
Terminal Board
0V
'A'
'B'
'B'
'A'
GND
GND
3
4
9
Links on Serial Module
PL2
C1300
Linked Out
see
Note
+5V
0V
1.8k
W
Pull-down
Resistor
1.8k
W
Pull-up
Resistor
+5V
1.8k
W
Pull-up
Resistor
0V
1.8k
W
Pull-down
Resistor
Note.
If an RS422/485 adaptor card without pull-up and pull-down
resistors is used, the C1300's internal resistors can be linked in.
