Quote:
Originally Posted by Electronic M
What I do to set horizontal frequency on TV (should also apply here) is hook my scope to the composite output of a DVD player or DTV box adjust the horizontal time scale control of the scope for 2-4 cycles of the H sync pulse on screen, count how many graticule marks are between the leading edges of 2 adjacent peaks....Once I have done this I don't touch the horizontal control of the scope or auto scale...Then I connect the scope to the horizontal osc in the TV, adjust the vertical scale of the scope to compensate for the amplitude difference, and adjust the TVs osc adjustment so the peaks of the osc have the same spacing on the graticule as measured earlier with composite video from a digital reference source. Most TVs I do this with are dead nuts in sync from warm up with no further adjustment.
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Thanks Tom…that’s graduate school stuff for me but your instructions are very detailed so I might be able to do this. I’ll give it a shot later tonight. In the meantime keep them comments comin’!!!
09-12-2023, 04:17 PM
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