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525B
Users Manual
4-2
Setting up the RS-232 Port for Remote Control
The Calibrator is fully programmable over an RS-232 link with a PC. You can
enter individual commands from a terminal, write your own programs using, for
example, a Windows
®
-based language such as Visual Basic, or run optional
Windows
®
-based Fluke software such as MET/CAL.
The RS-232 cable length for the port should not exceed 15 meters (50 feet),
although longer cable lengths are permitted if the load capacitance measured at a
connection point (including signal terminator) does not exceed 2500 pF.
RS-232 Port Setup Procedure
Serial parameters are fixed with the values shown below:
• 9600 baud
• 8 data bits
• 1 stop bit
• no parity
• Xon/Xoff
• EOL (end-of-line) character CR (Carriage Return)
Testing the RS-232 Port
Use the following procedure to test the Calibrator RS-232 Port connected to a PC
COM port. A typical connection is shown in Figure 4-1. Note the use of a null
modem cable for connection.
UUT
SERIAL
Port
Controller
COM Port
Null Modem Cable
525B Calibrator
fcn14f.eps
Figure 4-1. Testing the RS-232 Port
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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