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5820A
Operators Manual
5-14. Testing RS-232 UUT Port Operation using 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 E 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.
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the 5820A RS-232 UUT port to match the parameters of the UUT RS-232 port.
5820A 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 E, which discusses how to create
a Visual Basic program.
If the UUT did not respond, check the RS-232 parameters set for the 5820A
Calibrator UUT port and set for the UUT port. Verify you used a modem (not null
modem) cable for the 5820A 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.
oq025f.bmp
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