Video Test Generator User Guide
449
NCPP
Number Clocks Per Pixel
Class
Format parameter setting - Digital video signal
Description
Specifies the number of clocks per pixel (double-clocking factor for whole line). Some
industry standard formats (e.g. 480i) have pixel rates that are below the minimum pixel
rate restriction (of 25 MHz) required by the TMDS interface. In these cases, a feature
known as “double-clocking” is used to raise the TMDS clock rate to an acceptable
frequency.
Double-clocking is controlled by the NCPP format parameter. When NCPP is set to 1
(normal single-clocked), each pixel, output by the generator, is paired with one clock
pulse. In this case, the pixel rate is equal to the TMDS clock rate. By setting NCPP to 2
(double-clocked), two clocks are send during each pixel period and the TMDS clock rate is
raised to 2 times the pixel rate.
Note that double clocking with NCPP and pixel repetition (NPPP) cannot be applied at the
same time.
Command syntax
NCPP
factor
factor
1 or 2
Related commands
NBPA
,
NPPP
Example
NCPP 2
FMTU
Содержание 802BT
Страница 1: ...802BT 802R Video Test Generator User Guide ...
Страница 52: ...42 Chapter 2 Testing Video Displays ...
Страница 62: ...52 Chapter 3 Administrative Tasks ...
Страница 87: ...802BT 802R Video Test Generator User Guide 77 IMGE end an editing session IMGA MyImage save image as MyImage ...
Страница 118: ...108 Chapter 7 Using GPIB Interface ...
Страница 194: ...184 Chapter 10 Testing EDID ...
Страница 204: ...194 Chapter 11 Testing HDCP ...
Страница 213: ...Video Test Generator User Guide 203 A Command Reference Topics in this appendix Commands by name ...
Страница 214: ...204 Appendix A Command Reference Commands by name ...
Страница 303: ...Video Test Generator User Guide 293 Example 7 Turn audio off DPTG 3 DPGU Example 8 Turn audio on DPTG 7 DPGU ...
Страница 595: ...Video Test Generator User Guide 585 ...
Страница 608: ...598 Appendix A Command Reference Related commands YMDO UNPK PKUP VTOF FLSH Example YMDI YMODEM BATCH upload ...
Страница 611: ...Video Test Generator User Guide 601 ...
Страница 612: ...602 Appendix A Command Reference ...
Страница 613: ...802BT 802R Video Test Generator User Guide 603 B Image Reference Topics in this appendix Standard image descriptions ...
Страница 716: ...706 Appendix B Image Reference ...
Страница 744: ...734 Appendix C Error Messages ...