4-43
Test
Display size correction
Purpose
A too-large active video size adjustment on a monitor
may cause information to be lost around the edges
of the screen. A too-small active video size adjustment
may make some displayed information hard to read.
The correct size is needed to obtain the correct aspect
ratio. You need the correct aspect ratio to get round
circles and square squares.
Method
First you need to know the correct physical size of
the active video area for the display. This information
usually is given in a display’s spec sheet or service
manual. The size should match the sizes in the format
you’re using. The size setting of the current format
can be checked using the Format test image.
Place a ruler or gauge along the horizontal line of
the image and adjust the monitor's horizontal size
control until the distance between the endpoints
matches the specified value.
Move the ruler or gauge to the vertical line and
adjust your monitor's vertical size control until
the distance between the endpoints matches the
specified value.
Test
Parallelogram distortion check
Purpose
Parallelogram distortion is very difficult to correct
with magnets because the correction often causes
barrel distortion. Therefore, you should decide
early whether your monitor meets this spec. The
problem usually can be traced to the improper
winding of the yoke coils. If the problem isn’t too
severe, it may be corrected by adding or adjusting
magnets on the yoke. However, if the distortion
is excessive, it may be an indication of a defective
yoke which cannot be corrected with magnets.
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 ...