Is the HSYNC on an Apple I intentionally 10 us wide ???

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Is the HSYNC on an Apple I intentionally 10 us wide ???

REQUEST FOR HSYNC TIMING MEASUREMENTS ON APPLE I (or clones)

Hi -

I am wondering about a few weird results from video signal measurements on my Apple I clone.

The HSYNC seems to be 10 us wide, which is a tad more than two times the TV norm (4.7 us IIRC).

My period correct Shibaden VM-903U B&W monitor can digest it, but my small, 1990s vintage Mini-TV (single chip video section inside) can't take it and can't sync to that signal.

(So far the superiority of "modern" electronics !)

On the Shibaden, with 7" screen width (not diagonal !) the characters start about 1  1/4 inch from the left screen corner and the 40 chars juuuuust fit on the screen.

Some of that may be due to the enormous age of that monitor, but the 10 us HSYNC look wrong to me.

Is this wide HSYNC "normal" for the APPLE I ?

Otherwise, I need to go hunting for a bad IC somewhere.

Comments invited.