
802BT/802R Video Test Generator User Guide
615
Burst (TV formats only)
Description
The left side starts with reference white (+100 IRE) and black (+7.5 IRE) levels. This is
followed by six bursts of sine waves. Each burst is at a different frequency, forming vertical
lines of various widths. The frequencies, going from left to right, are 0.5, 1, 2, 3, 3.58, and
4.43 MHz.
Test
Frequency response
Method
When viewed on a TV screen, the peak intensities of all of the bursts should match the
white reference level. The darkest portions between the peaks should match the black
reference level.
The image can also be used with a TV waveform analyzer to check the frequency
response of a video system. One scan line of the image, as it would appear on a waveform
analyzer, is shown at the top of the next page . High frequency roll-off (loss) would show
up as a decrease in the peak-to-peak swings on the right side of the waveform. Low
frequency roll-off would show up as a decrease in the peak-to-peak swings on the left side
of the waveform.
Some waveform analyzers can be set to detect and display the amplitude of the peaks. A
typical amplitude waveform for a good system is shown at the bottom of the next page.
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 ...