A2 Display Test - Agilent Technologies E8362B Service Manual

PNA Series Microwave Network Analyzers
E8362B, E8363B, E8364B
Table 4-6 Keyboard Key Numbers
Front
Key
Panel
Value
Key
Sweep
65
Type
Checking the RPG (Front Panel Knob)
To check the RPG knob, rotate the knob and check for a fluid movement of numbers in the
box.
Velocity
• If the movement of numbers in the
all, suspect a faulty A3 front panel interface board. To replace the A3 front panel
interface board, refer to

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
Problems" on page
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."
• A "stuck on" pixel is red, green, or blue and is always displayed regardless of the display
setting. It will be visible on a dark background.
• A "dark" pixel is always dark and will be displayed against a background of its own
color.
How to Run the Display Test
To run the display test, perform the following:
On the menu, point to
System
A multi-color screen is displayed. Be prepared to look for the symptoms described in
to Identify a Faulty Display,"
test, click the moving
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 symptoms indicate a faulty A2 display assembly:
• a complete row or column of "stuck on" or "dark" pixels
• more than six "stuck on" pixels (but not more than three green)
• more than twelve "dark" pixels (but not more than seven of the same color)
Service Guide E8364-90026
Key Front
Value Panel Key
81 Scale
Velocity
"Removing the A3 Front Panel Interface Board" on page
4-13.
, and then click
Service
and then click the
button. The button moves to allow you to see all of the
Next Test
Front
Key
Panel
Value
Key
Math/
97
Memory
box is not smooth or no numbers appear at
"Troubleshooting LCD Display
.
Display Test
button. To continue to the next
Start Test
Troubleshooting
Front Panel Troubleshooting
Key Front
Value Panel Key
113 Macro
7-12.
"How
4-19