Examination Of A Tv Frame - Metrix OX 520B Manual De Funcionamiento

• Select the appropriate vertical sensitivity for the signal amplitude, such that the
image covers about 80% of the screen height.
Adjust the framing control if necessary.
The observed image corresponds to three complete 64 µs TV lines.
synchronization pulse, the chrominance burst and the video content are clearly
visible (figure 2).
• Lower the sweep speed to 2 µs/div. The beginning of the line is expanded, the
trigger point is unchanged (line synchronization pulse) (figure 3).
CH 1

5.2.2. Examination of a TV frame

• Select TVV coupling.
• Select a sweep speed of 1 ms/div.
• The observed image corresponds to the first 10 milliseconds of the TV frame. The
synchronization stream is perfectly visible at the beginning of the screen (figure 4).
20
0 2V 20 REFR
figure 2
figure 4
Chapter II
The
figure 3
20 MHz oscilloscope