Tektronix TDS3SDI, Technical Reference

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Reference
TDS3SDI 601 Digital Video Technical Reference
39
Example 6: Custom Video
In this example, you need to display a composite video waveform
from a medical instrument display driver that uses a non-broadcast
scan rate of 50 kHz. Do these steps to display the waveform:
1. Connect the composite video signal to oscilloscope channel 1
using proper adapters and a 75 ohm terminator.
2. Push the Trigger MENU front panel button.
3. Push the TYPE bottom button to select Video.
4. Push the Standard bottom button to select Custom.
5. Push the Source bottom button to display the A Trigger Source
side menu.
6. Push the CH 1 side button.
7. Push the Trigger On bottom button and side menu to set the
video trigger condition.
8. Push the Scan Rate bottom button to display the scan rate side
menu.
9. Push the Rate 4 side button to select a 35-50 kHz horizontal scan
rate. The oscilloscope displays the video waveform.
NOTE . The oscilloscope will display video waveforms for signals with
scan rates greater than 65 kHz. However, the waveform data (such as
line count) may not be accurate because the oscilloscope is
triggering on the next-detected sync pulse. The oscilloscope may miss
some sync pulses when scan rates are greater than 65 kHz.