A2 Display Test - Agilent Technologies E8362C Service Manual

PNA Series Microwave Network Analyzers
E8362C, E8363C, E8364C
Checking the RPG (Front Panel Knob)
To check the RPG knob:
1. Press the UTILITY
Preset
2. Rotate the knob and check for a fluid movement of numbers on the analyzer display.
• If the movement of numbers is not smooth or no numbers appear at all, suspect a faulty A1 front panel
interface board. To replace the A3 front panel interface board, refer to
Interface Board" on page

A2 Display Test

The display 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
What Is a Damaged Pixel?
A pixel is a picture element that combines to create the image on the display. A pixel is about the size of a
small pin point.
A damaged pixel is:
• A pixel that has a constant blue, green, or red appearance that will not change, or
• a pixel that has a constant black appearance that will not change.
How to Run the Display Test
To run the display test, perform the following:
Press UTILITY System
A multi-color screen is displayed. Be prepared to look for the symptoms described in
Faulty Display." Follow the instructions on the screen.
How to Identify a Faulty Display
A display is considered faulty if:
• More than 0.002% of the total pixels have a constant blue, green, red, or black appearance that will not
change.
• Three or more consecutive pixels have a constant blue, green, red, or black appearance that will not
change.
• If the A2 display assembly is determined to be faulty, replace it. Refer to
Assembly" on page 7-13.
Service Guide E8364-90038
key.
7-14.
, then Service , then More
"Replacing the A3 Front Panel
"Front Panel Troubleshooting" on page
Display Test
, then .
Troubleshooting
Front Panel Troubleshooting
4-12.
"How to Identify a
"Replacing the A2 Display
4-15