Video Test Generator User Guide
367
HRAT
Horizontal RATe
Class
Format parameter setting - Video resolution
Description
Sets the line frequency. Pixel rate is equal to HTOT multiplied by HRAT. Frame rate is
equal to HRAT divided by VTOT. Field rate is equal to SCAN multiplied by the frame rate.
The HRAT? query returns the current horizontal frequency setting.
Command syntax
HRAT
frequency
frequency
typical min = 1000 Hz (floating point accepted)
typical max = 130000 Hz (floating point accepted)
Query syntax
HRAT?
Query response
frequency in Hz (floating point returned)
Other required
commands
The
FMTU
command instructs the generator to use the new settings. The
ALLU
command
updates the hardware to the new settings and redraws the test image.
Example
HRAT 32768 // Set 32.768 kHz rate in buffer
FMTU
// Update hardware to current buffer contents
or
HRAT 32.768E3 // Set a 32.768 kHz rate
FMTU
// Update hardware to current buffer contents
Summary of Contents for 802BT
Page 1: ...802BT 802R Video Test Generator User Guide ...
Page 52: ...42 Chapter 2 Testing Video Displays ...
Page 62: ...52 Chapter 3 Administrative Tasks ...
Page 118: ...108 Chapter 7 Using GPIB Interface ...
Page 194: ...184 Chapter 10 Testing EDID ...
Page 204: ...194 Chapter 11 Testing HDCP ...
Page 214: ...204 Appendix A Command Reference Commands by name ...
Page 595: ...Video Test Generator User Guide 585 ...
Page 611: ...Video Test Generator User Guide 601 ...
Page 612: ...602 Appendix A Command Reference ...
Page 716: ...706 Appendix B Image Reference ...
Page 744: ...734 Appendix C Error Messages ...