5500A
Operator Manual
5-12
5-7. Testing the RS-232 Host Port
Choose or adapt one of the following test procedures to test the 5500A Calibrator
RS-232 Host port connected to a PC COM port. A typical connection is shown in Figure
5-4. Note the use of a null modem cable for connection. (See Appendix D for
information about RS-232 cables and connectors.)
UUT
SERIAL 1
FROM HOST
Port
5500A Calibrator
Controller
COM Port
Null Modem Cable
F5-0e.eps
Figure 5-4. Typical PC COM Port Connections
Terminal This procedure uses the Terminal accessory supplied with Windows (or
equal) to test RS-232 Host port operation. To use this method, you must select term as
the Remote I/F in Step 4 in the procedure “RS-232 Host Port Setup Procedure.”
Visual Basic This procedure uses Visual Basic (see Appendix E) to test RS-232 Host
port and RS-232 UUT port operation.
5-8. Testing RS-232 Host Port Operation using a Terminal
Complete the following procedure to test RS-232 Host port operation using the Windows
Terminal accessory (or equal).
1. Complete the “RS-232 Host Port Setup Procedure” earlier in this chapter to set up
the 5500A for RS-232 Host port operation. Note the RS-232 Host port parameters
that you selected in this procedure.
2. Connect the selected COM port on the PC to the 5500A SERIAL 1 FROM HOST
port using a standard null-modem RS-232 cable. (See Appendix D for information
on RS-232 cables and connectors.)
3. Open Windows to the Program Manager screen on your PC.