What determines the max refresh rate of a CRT? - AVS Forum | Home Theater Discussions And Reviews

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post #1 of 3 Old 11-21-2015, 12:10 PM - Thread Starter
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What determines the max refresh rate of a CRT?

I'm confused as to how the max refresh rate of a CRT is decided.

My F520 monitor says to have a max refresh rate of 170. However, using a calculator, a 640x480 signal at 280hz would be within the bandwidth and scanning frequency of the monitor. Why is it set to 170, what would happen if I push it past that? (I'm a little cautious of actually trying)

Would interlacing the video also push the refresh rate to 340hz since the electron beam is essentially moving at the same pace?

I don't really care about having that high of a refresh rate, i'm just curious to know.
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post #2 of 3 Old 11-26-2015, 01:37 PM - Thread Starter
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post #3 of 3 Old 01-13-2016, 07:38 AM
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If it was as simple as bandwidth, that would be great! Unfortunately, the horizontal scan rate is the limiting factor - how quickly the CRT yoke can move the electron beam back and forth. Some move faster than others.
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