Agilent Technologies B1500A Guide de l'utilisateur télécharger pdf (Page 100)

3-6 Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3

Programming Examples for Visual Basic Users

Programming Basics

To Create Measurement Program

Create the measurement program as shown below. The following procedure needs

your project template. If the procedure does not fit your programming environment,

arrange it to suit your environment.

Step 1. Plan the automatic measurements. Then decide the following items:

• Measurement devices

Discrete, packaged, on-wafer, and so on.

• Parameters/characteristics to be measured

, Vth, sheet resistance, and so on.

• Measurement method

Spot measurement, staircase sweep measurement, and so on.

Step 2. Make a copy of your project template (e.g. \test\my_temp to \test\dev_a\my_temp).

Step 3. Rename the copy (e.g. \test\dev_a\my_temp to \test\dev_a\spot_id).

Step 4. Launch Visual Basic.

Step 5. Open the project (e.g. \test\dev_a\spot_id).

Step 6. Open the form that contains the template code as shown in Table 3-1. On the code

window, complete the perform_meas subprogram. Then use the Agilent B1500

VXIplug&play driver functions:

• agb1500_setSwitch to enable/disable the source/measurement channels

• agb1500_force, agb1500_setIv, etc. to set source outputs

• agb1500_spotMeas, agb1500_sweepIv, etc. to perform measurements

• agb1500_zeroOutput to disable source outputs

Step 7. Insert the code to display, store, or calculate data into the subprogram.

Step 8. Save the project (e.g. \test\dev_a\spot_id).

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Agilent Technologies B1500A Guide de l'utilisateur Page 100