Communications (RS-232, Centronics, and RS-232/USB)
To connect the oscilloscope to Use this type cable
Tektronix part
number
Sun workstations, and serial printers,
such as an HP Deskjet
9-pin female to 25-pin
male, null modem
012-1298-00
Telephone modems
9-pin female to 25-pin
male, modem
012-1241-00
Connecting an External
Device
When you con
nect the oscilloscope to an external RS-232 device, follow these
guidelines:
Use the cor
rect cable (refer to the preceding table).
Use a cable that is no longer than 50 feet (15 meters).
Power off the oscilloscope and the external device before you connect the
cable between them.
NOTE. Th
is manual contains information on connecting external devices when
making floating mesaurements. (See page 3, Taking Floating M easurements.)
RS-232 Settings
To set
up the oscilloscope RS-232 interface, follow these steps:
1. Push the Utility button to see the U tility Menu.
2. Push Options ► RS232 Setup.
3. Push the option buttons to match the settings of your external device. The
next table lists the settings you can change.
NOT
E. The oscilloscope stores these settings until you change them, even if you
push the Default Setup button.
Option Settings Comments
Set to D efaults Sets the RS-232 interface to factory defaults
(Baud=9600, Flow=hardflagging, EOL String=LF,
Parity=None).
Baud 300, 600, 1200,
2400, 4800, 9600,
19200
Sets the data transmission rate.
Flow Control Hardflagging,
Softflagging, None
Sets data flow control (Softflagging = Xon/X off,
Hardflagging = RTS/CTS). Use hardware flagging
when you transfer binary data.
74 TPS2000B Series Digital Oscilloscope User Manual
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