Tektronix TPS2000 Series User Manual page 148

Communications (RS-232 and Centronics)
If a break signal is sent in the middle of a character stream, several
characters immediately preceding or following the break can be lost.
The controller waits until it receives the three character string DCL
and the end of line terminator string before sending more characters.
RS-232 Connector Pinout Diagram
The next figure shows the pin numbering and signal assignments for
the RS-232 connector.
1 No connection
2 Receive data (RxD)
3 Transmit data (TxD)
4 Data terminal ready (DTR)
5 Signal ground (GND)
6 Data set ready (DSR)
7 Request to send (RTS)
8 Clear to send (CTS)
9 No connection
6- 12
1 2 3 4 5
6 7 8 9
TPS2000 Series Digital Oscilloscope User Manual
(input)
(output)
(output)
(input)
(output)
(input)