Tektronix TDS3SDI, Техническое описание

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Reference
38
TDS3SDI 601 Digital Video Technical Reference
Example 5: Trigger On Line
In this example, you suspect that one or more pixels are defective in
a Charge-Coupled Device (CCD) video camera. You need to
determine which line in which fields contain the defective pixel(s).
Do these steps:
1. Connect the video camera output signal to oscilloscope channel 1
using proper adapters and a 75 ohm terminator.
2. Cover the camera lens with a lens cover so that no light enters the
lens.
3. Push the QUICKMENU button to display the QuickMenu.
4. If the video QuickMenu is not displayed, push the MENU bottom
button to display the video QuickMenu.
5. Push the SUBMENU bottom button to select SDTV/HDTV.
6. Push the Format side button to select SDTV.
7. Push the AUTOSET bottom button to select Lines.
8. Push the ACQUIRE bottom button to select Normal; this
increases the waveform resolution.
9. Push the Field/Line side button to select O Line n (odd) or E
Line n (even) for 525/NTSC signals, or Line n for 625/PAL and
SECAM signals. Use the general purpose knob to select the video
signal line on which to trigger.
10. Rotate the general purpose knob to examine each video line.
Write down the line number (and field if applicable) of any
waveforms with pixels that exceed error specifications. You can
also use the Zoom function to magnify the line display and
determine the number of defective pixels in a line.