Keithley SourceMeter 2600 Series Reference Manual page 273

Series 2600 System SourceMeters Reference Manual
RS-232 connections
The RS-232 serial port is connected to the serial port of a computer using a
straight-through RS-232 cable terminated with DB-9 connectors. Do not use a null
modem cable. The serial port uses the transmit (TXD), receive (RXD), CTS and
RTS (if flow control is enabled), and signal ground (GND) lines of the RS-232
standard.
and Table 11-3
shown in
If your computer uses a DB-25 connector for the RS-232 interface, you will need a
standard cable or adapter with a DB-25 connector on one end and a DB-9
connector on the other. An available RS-232 cable from Keithley Instruments is
listed in
Figure 11-4
RS-232 interface
Table 11-3
RS-232 connector pinout
Pin number
Figure 11-4 shows the rear panel connector for the RS-232 interface,
shows the pinout for the connector. The connector location is
Figure 11-3.
"Options and accessories" in
connector
RS-232
Description
1 Not used
2 TXD, transmit data
3 RXD, receive data
4 Not used
5 GND, signal ground
6 Not used
7 RTS, ready to send
8 CTS, clear to send
9 Not used
Return to
Communications Interfaces
Section 1.
Section 11 topics 2600S-901-01 Rev. A / May 2006
11-13