Tektronix KEITHLEY 2600B Series User Manual

Section 8: Instrument programming Series 2600B System SourceMeter® instrument Reference Manual
8-62 2600BS-901-01 Rev. F/August 2021
RS-232 connections
Connect the RS-232 serial port of the 2600B 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. The connector location is shown in Remote communications interfaces
(on page 8-36).
If your computer uses a DB-25 connector for the RS-232 interface, you need a standard cable or
adapter with a DB-25 connector on one end and a DB-9 connector on the other.
Figure 99: RS-232 interface connector
RS-232 connector pinout
Pin number
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
The following table provides pinout identification for the 9-pin (DB-9) or 25-pin (DB-25) serial port
connector on the computer.
Computer serial port pinout
Signal*
DB-9 pin number
DB-25 pin number
DCD, data carrier detect
1
8
RXD, receive data
2
3
TXD, transmit data
3
2
DTR, data terminal ready
4
20
GND, signal ground
5
7
DSR, data set ready
6
6
RTS, request to send
7
4
CTS, clear to send
8
5
RI, ring indicator
9
22
* The 2600B does not use all RS-232 signals. See Flow control and signal handshaking (on page 8-61).

Tektronix KEITHLEY 2600B Series Specifications

General

Brand	Tektronix
Model	KEITHLEY 2600B Series
Category	Measuring Instruments
Language	English