Display Test


The VNA screen should be bright with all annotations and text readable. The display test allows you to check for non-functioning pixels and other problems.

Note If the display is dim or dark, refer to “Troubleshooting LCD Display Problems” in the VNA Service Guide.

What Is a Damaged Pixel?

A pixel is a picture element that combines to create the image on the display. They are about the size of a small pin point. Damaged pixels can be either “stuck on” or “dark.”

How to Run the Display Test

Press System > Service > Diagnostics, and then click Display Test...

A multi-color screen is displayed. Be prepared to look for the symptoms described below. Click the Start Test button. To continue to the next test, click the moving Next Test button. The button moves to allow you to see all of the display. After the test is completed, the display defaults to the network analyzer screen.

How to Identify a Faulty Display

One or more of the following indicate a bad display:

If any of these symptoms occur, your display is considered faulty. See the Service Guide for your VNA model.