6. Interface
6.3 RS-232-C Interface Lines
The serial interface of the instrument is connected to a start-stop synchronized
serial RS-232-C circuit.
The list below names the interface lines of the 9 pin connector of the instrument.
PIN Number
DESCRIPTION
1
DTR
Data Terminal Ready
2 TD Transmit
Data
3 RD Receive
Data
4
DCD
Data Carrier Detect
5 GND Ground
6 No
connection
7
RTS
Request To Send
8
CTS
Clear To Send
9 No
connection
The connecting cable used to connect the instrument to the computer should be
wired as given below.
INSTRUMENT COMPUTER
TD
connected to RD
RD
connected to TD
GND
connected to GND
RTS connected to CTS
DSR connected to DCD and DTR
Use the computer handbook to find the correct pin connections.
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
20
Instrument
Instrument
Computer 25 pin
Computer 9 pin
6-2
Operating Manual for GENios, GENios FL, and GENios
Plus
No: I 112 904 Rev No: 1.1
June 2002