TDS2CMA Communications Module
134 TDS1000/2000-Series Digital Oscilloscope User Manual
Setting Up and Testing the RS-232 Interface
You may need to set up and test the module RS-232 interface.
RS-232 is an 8-bit serial comm unications standard that lets the
oscilloscope communicatewith an external RS-232 device such as a
computer, terminal, or printer. The standard defines two device
types: Data Terminal Equipment (DTE) and Data Communicati ons
Equipment (DCE).The oscilloscope is a DTE device.
RS-232 Conventions on page 141 describes RS-232 conventi ons.
RS-232 Connector Pinout Diagram on page 142 shows a diagram of
the 9-pin RS-232 connector with pin numbers and signal assign-
ments.
Selecting an RS-232 Cable
You need an RS-232 cable to connect the oscilloscope to an external
device. You can use the next table to choose the correct cable.
To connect the
oscilloscope to You need this type cable
Tektronix part
number
PC/AT or laptop
computers
9-pin female to 9-pin female,null
modem
012-1379-00
PCswith25-pinserial
port connector
9-pin female to 25-pin female,null
modem
012-1380-00
Serial printers, such as
an HP Deskjet, and Sun
workstations
9-pin female to 25-pin male,
null modem
012-1298-00
Telephonemodems 9-pin female to 25-pin male,
modem
012-1241-00