Box_50mm and Box_64mm

Description

The primary version has a solid white box in the

 

center of the active video. Depending on the image

 

selected, the box is either 50 millimeters (1.97

 

inches) or 64 millimeters (2.52 inches) square. If

 

there’s room, information on the current format

 

appears below and to the left of the box. This shows

 

the number of active pixels and lines as well as

 

the horizontal and vertical scan rates. An I after

 

the number of active lines indicates the format is

 

interlaced. The secondary version draws a black

 

box and black text on a white background.

 

 

 

 

Note – The box will be the correct size only if the correct

 

physical active video size is set in the format.

 

640 x 480

H= 31.469 KHz V= 59.940 Hz

Test

Brightness control adjustment

Purpose

The wrong brightness setting may cause other tests

 

such as Contrast, Focus and Beam Size to be invalid.

 

An accurate brightness setting helps give repeatable

 

measurements throughout other tests.

Method

Center your light meter probe within the center

 

square and adjust the monitor’s brightness control

 

to obtain the required light meter reading.

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Quantum Data 801GC, 801GF, 801GX manual Box50mm and Box64mm