C
Cinderlane Productions
Guest
Can I get away with using a 20 MHz oscilloscope to satisfactorily view
video waveforms?
I know that in order to trigger all the test signals properly, I should
use at least a 150 MHz unit -- preferably a conventional video waveform
monitor. However, I cannot afford one.
It is not my intention to measure rise times or verify parameters in a
professional capacity. Rather, I want to accomplish such simple things
as verifying that closed captioning is present in the correct vertical
interval line, determining that color burst and sync levels are "in the
ballpark," and checking for the presence of SCH frame-burst signals.
To reiterate, I will be using the scope too infrequently to justify a
major expenditure of funds, yet I want one with a bandwidth sufficient
enough to allow me to count the lines in the vertical interval and
identify what is in them.
video waveforms?
I know that in order to trigger all the test signals properly, I should
use at least a 150 MHz unit -- preferably a conventional video waveform
monitor. However, I cannot afford one.
It is not my intention to measure rise times or verify parameters in a
professional capacity. Rather, I want to accomplish such simple things
as verifying that closed captioning is present in the correct vertical
interval line, determining that color burst and sync levels are "in the
ballpark," and checking for the presence of SCH frame-burst signals.
To reiterate, I will be using the scope too infrequently to justify a
major expenditure of funds, yet I want one with a bandwidth sufficient
enough to allow me to count the lines in the vertical interval and
identify what is in them.