Agilent Technologies 45A, 46A manual To check the flat panel display FPD, Calibrating and Adjusting

Chapter 4: Calibrating and Adjusting

To check the flat panel display (FPD)

To check the flat panel display (FPD)

No equipment is required for this procedure. Specifications for flat-panel displays used in the Infiniium oscilloscope are shown in the following table.

Flat-Panel Display Specifications

Defect Type

Polarizer

Dot Defect

(A dot is defined as 1, 2, or 3 stuck subpixels touching horizontally. Subpixels are horizontal red, green, blue triads, so these may show up as one of 8 colors or black.)

Line Defect

Non-uniformity

Luminance

(The measurement is perpendicular to the screen surface in both axes.)

	Limit
Scratch	Width ≤ 0.05 mm
	Length ≤ 10 mm
Dent	φ ≤ 0.4mm
Bright dot	N ≤ 5
Dark dot	N ≤ 7
Total dot	N ≤ 12
Two adjacent dots	≤ 2 pairs
Bright dot
Dark dot	≤ 2 pairs
Three or more adjacent dots	Not allowed
Distance between defects	≥ 10 mm
Bright dot
Dark dot	≥ 10 mm
	Not allowed
	Check other specifications
Minimum	160 cd/m2
Typical	200 cd/m2

When to Use this Procedure

This procedure should not be performed as a part of routine maintenance. Perform the procedure only when there appears to be a problem with the display.

1Enable the graphical interface.

2Select Self Test from the Utilities menu.

3Click the Service Extensions box in the Self Test dialog.

4 Select Screen from the Test drop-down list box.

See figure 4-2.

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