5 Application Programs
166 E364xA User’s and Service Guide
5 To change the button name, click the right mouse button on that button and
then select Properties. The Properties dialog box appears.
6 In the Properties dialog, change the (name) and caption to Diode.
7 To try the example for characterizing a diode, type Voltages in cell A4 and
Current in cell B4. In cell A5, type 0.6. Fill in cells A5 to A15 in 0.02 increments
so that cell A15 contains 0.8.
To enter the Diode macro example in this section:
1 Go to the View menu, choose Toolbars, and then select the Visual Basic
Editor icon. The Code window appears.
2 Then, type the text as shown on page 161 into the [Module1 (code)] window.
To enter the declaration for Windows 95/NT, go to the Insert menu and choose
Module. The Module window appears.
3 Then, type the text as shown starting on page 163. This module will configure
all of the overhead required to communicate with the power supply over the
interface. Choose the preferred interface by setting bGPIB= to True or False
and change the GPIB address or RS-232 port in the routine OpenPort( )
contained in the module.
To run the macro, return to the Excel window, select the Run Macro button in the
dialog box, choose the macro name, and then click Run. The power supply will
reset to the power- on condition and then step through the voltages in the
worksheet. After each step, the current is measured and recorded in the
worksheet.
Make any changes necessary to suit your application in the Diode module. You
must enter the information in the modules exactly as shown or an error will be
generated. If several system errors occur while attempting to run a macro, you
may have to reboot your PC to get the GPIB or RS-232 interface to work properly.
To use the example with Windows 3.1, you will need to modify the declarations
at the top of the module. Change visa32.dll to visa.dll in all declarations.
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