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5522A
Operators Manual
5. When finished testing UUT commands, select the Exit command from the File menu
How to Test RS-232 UUT Port Operation with Visual Basic
Complete the following procedure to test RS-232 UUT port operation via the RS-232
Host port using a Visual Basic test program. This procedure assumes you have already
completed Appendix D, "Creating a Visual Basic Test Program" to create the program
used for this test.
Complete the following procedure to test RS-232 operation using Visual Basic.
1. Complete the "RS-232 UUT Port Setup Procedure" earlier in this chapter to set up
2. Complete "Testing RS-232 Host Port Operation using Visual Basic" to prepare the
3. Click the Command3 button (below is typical). Observe the UUT responds to the
4. Close the program by clicking the top-left corner and Close.
How to Test the RS-232 UUT Port via IEEE-488 Port
This procedure uses the Win32 Interactive Control utility supplied by National
Instruments with the recommended interface cards. Connect the UUT, Calibrator, and PC
as shown in Figure 5-6. Note the use of a modem cable (NOT null modem) for the UUT
connection. (See Appendix C for information about RS-232 cables and connectors.)
5-18
to close the Terminal accessory.
the Calibrator RS-232 UUT port to match the parameters of the UUT RS-232 port.
Calibrator RS-232 Host port. After Step 6, return to this procedure and continue to
Step 3 below.
command you used when you completed Appendix D, "Creating a Visual Basic Test
Program."
If the UUT did not respond, check the RS-232 parameters set for the Calibrator UUT
port and set for the UUT port. Verify you used a modem (not null modem) cable for
the Calibrator to UUT connection. Check the Visual Basic program to make sure the
UUT command was entered correctly, including the end-of-line character, if any.
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