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Chapter 6: Programming
Model 801GC, 801GF & 801GX¥Rev. A
VSPP
Vertical Sync Pulse Polarity
Classification:
Format parameter setting
Command Syntax:
VSPP <polarity>
Limits:
<polarity>
0 = active-low (negative going pulse)
1 = active-high (positive going pulse)
Query Syntax:
VSPP?
Query Response:
<mode>
Description:
The VSPP command establishes the logic sense of the digital
vertical sync outputs. Setting polarity to one (1) causes the leading
edge of vertical sync to be a low-to-high transition. Setting
polarity to zero (0) causes the leading edge of vertical sync to
be a high-to-low transition. The VSPP? query returns the current
polarity of VSPP.
Other Required Cmds:
In order to use digital vertical sync, it must be gated on with
the VSPG command and digital separate H&V sync must be
selected with the SSST command. The FMTU command instructs
the generator to use the new setting. The ALLU command updates
hardware to the new setting and redraws the test image.
Example:
V S P P 1 / / S e t a c t i v e h i V s y n c i n
/ / b u f f e r
V S P G 1 / / E n a b l e V s y n c o u t p u t i n
/ / b u f f e r
S S S T 1 / / S e l e c t H & V s y n c t y p e i n
/ / b u f f e r
F M T U / / U p d a t e h a r d w a r e t o c u r r e n t
/ / b u f f e r c o n t e n t s
VSPW
Vertical Sync Pulse Width
Classification:
Format parameter setting
Command Syntax:
VSPW <lines>
Limits:
<lines>
Query Syntax:
VSPW?
Query Response:
<lines>
Description:
The VSPW command establishes the width of the vertical sync
pulse in lines. If the type specified for the selected sync signal
(see SSST, ASCT, DSCT, or DSST commands) is one of the CCIR
types, then the actual sync pulse width output by the generator
will be 1/2 line shorter than the whole number specified. The
VSPW? query returns the current setting of VSPW.
Other Required Cmds:
The FMTU command instructs the generator to use the new
setting. The ALLU command updates hardware to the new setting
and redraws the test image.
Example:
V S P W 3 / / S e t V s y n c w i d t h t o 3 l i n e s
/ / i n b u f f e r
F M T U / / U p d a t e h a r d w a r e t o c u r r e n t
/ / b u f f e r c o n t e n t s
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 ...