4-14
Chapter 4: Built-In Images
Model 801GC, 801GF & 801GX¥Rev. X1
CheckBy3
Description
The active video area is equally divided into a
three by three checkerboard of black and white
boxes. The primary version has four white boxes
as shown in the figure on the left. The secondary
version has five white boxes as shown in the figure
on the right.
Test
Contrast ratio
Purpose
The pattern is based on a proposed ANSI method
of measuring the contrast ratio of video projection
systems.
Method
Using a suitable light meter probe, measure and
record the light-level reading (in foot lamberts)
in the center of each of the black and white boxes.
The contrast ratio is expressed as the average of
all of the white readings divided by the average
of all of the black readings.
Содержание 801GC, 801GF, 801GX
Страница 1: ...Owner s and Programmer s Manual Model 801GC 801GF 801GX Portable Video Signal Generators ...
Страница 16: ...xiv Table of Contents Models 801GC 801GF 801GX Rev A Notes ...
Страница 17: ...1 1 Features Product Overview Chapter 1 Introduction ...
Страница 21: ...2 1 Operating Modes Displays Indicators Knobs Switches Buttons Chapter 2 Basic Operation ...
Страница 31: ...3 1 Introduction Format charts Chapter 3 Built In Formats ...
Страница 39: ...4 1 Description of the test images and how to use them Chapter 4 Built In Images ...
Страница 126: ...5 14 Chapter 5 Making Connections Model 801GC 801GF 801GX Rev A Notes ...
Страница 304: ...6 178 Chapter 6 Programming Model 801GC 801GF 801GX Rev A Notes ...
Страница 305: ...7 1 Power on Computer Interfacing If all else fails Chapter 7 Troubleshooting ...
Страница 309: ...8 1 System Errors Format Errors System Error Message Summary Format Error Message Summary Chapter 8 Error Messages ...
Страница 335: ...9 1 Chapter 9 Service New Product Warranty Product Updates Service Agreements Authorized Service Centers ...
Страница 346: ...A 6 Appendix A Specifications Model 801GC 801GF 801GX Rev A Notes ...
Страница 355: ...Notes ...