Agilent 5991-3370EN Using Oscilloscopes to Test and Debug Analog HDTV Signals - Application Brief c20141009 free download

File name 5991-3370EN Using Oscilloscopes to Test and Debug Analog HDTV Signals - Application Brief c20141009

Keysight Technologies Using Oscilloscopes to Test and Debug Analog HDTV Signals Application Brief Keysight Technologies, Inc. InfiniiVision 4000 X-Series oscilloscopes with DSOX4VID option provide trigger and display features ideal for debugging and characterizing analog HDTV signals. 02 | Keysight | Using Oscilloscopes to Test and Debug Analog HDTV Signals - Application Brief Today's consumer electronic designers must be proficient mixed Figure 3 shows the use of "Zone Trigger" on the 4000 X-Series signal designers. Many devices have a combination of analog (audio, oscilloscope to isolate a particular video line. The video trigger is video) and digital (HDMI, DisplayPort) interfaces. A composite video set to trigger on all lines. This line is not isolated by its line num- input and/or output is still the lingua franca (working language) of ber, but by its waveform shape. With touch-drawn boxes that the consumer electronics video devices. If a device has one, and most waveform "must intersect" or "must not intersect," it is easy to do, it is an excellent way to quickly verify its correct operation, but trigger on only the desired lines. Note the use of an IRE graticule you must have the right oscilloscope. and IRE cursor readout to measure the isolated line. InfiniiScan Zone trigger is useful when you don't know the line number for Figure 1 shows the display of a standard NTSC color bar signal a certain waveform shape. It is even more useful for capturing triggered on all lines. The 4000 X-Series oscilloscope's 1 million intermittent errors when triggering on specific lines. waveforms per second update rate is able to plot all lines, creating an intensity graded image with details from the many different lines Another important aspect of high definition analog video is that are readily apparent. Color bursts, sync pulses, color bars and minimizing noise. The hardware-accelerated averaging available flat field are all visible. Lesser oscilloscopes may not keep up with in Keysight's InfiniiVision X-Series oscilloscopes can help track the information available. down troublesome noise sources. Averaging removes all noise not correlated to the trigger. Triggering on a noisy video signal and Figure 2 shows the 4000 X-Series with DSOX4VID option triggering averaging will show a clean signal when noise is coming from an on a 1080p/60 si