BLU_PIC, GRAY_PIC, GRN_PIC, RED_PIC,

WHT_PIC, Flat, Flat Gray, Flat_B, Flat_G, and

Flat_R

Description

A solid blue (BLU), gray, green (GRN), red, or

 

white (WHT) box fills the active video area.

 

 

 

 

 

 

 

 

 

Only the white fill has a secondary version. It can

 

be changed to a black fill.

Test

Purity adjustment

Purpose

To produce correct colors in a displayed image,

 

the electron beams from each of the three (3) guns

 

in the CRT should strike only their matching

 

phosphors. A white image shows patches of various

 

colors on a monitor with bad purity. The purity

 

adjustment(s) should be performed before doing

 

any brightness or color tests. In some cases, purity

 

adjustments involve loosening and repositioning

 

the yoke, in which case purity should be adjusted

 

prior to doing any geometry tests.

4-7

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Quantum Data 801GC, 801GF, 801GX manual BLUPIC, GRAYPIC, GRNPIC, Redpic, WHTPIC, Flat, Flat Gray, FlatB, FlatG, FlatR