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7. Remote Operation
The calibrator can be remotely controlled using a PC terminal, or by
a computer program running the calibrator in an automated system.
It uses an RS-232 serial port connection for remote operation. With
this connection the user can write programs on the PC, with
Windows languages like Visual Basic to operate the calibrator, or use
a Windows terminal, such as Hyper Terminal, to enter single
commands. Typical RS-232 remote configurations are shown in
Figure 23.
Figure 23. Calibrator-to-Computer Connection
7.1 Setting up the RS232 Port for Remote Control
Note: The RS-232 connection cable should not exceed 15m unless
the load capacitance measured at connection points is less than
2500pF.
Serial parameter values:
9600 baud
8 data bits
1 stop bit
no parity
Xon/Xoff
EOL (End of Line) character or CR (Carriage Return) or both
To set up remote operation of the calibrator on the Windows Hyper
Terminal, connected to a COM port on the PC as in Figure 23, use
the following procedure:
1. Start Hyper Terminal (located in Accessories/Communications of
the Windows Start menu)
2. Select New Connection.
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