On Fri, May 08, 2015 at 04:51:47PM +0000, William Levak wrote: >>For minimal interferences only the vertical sync is defined to the >>frequency of the main power. > >I looked at the schematics for the vertical drive circuit. It is >driven entirely from 12 V DC and the sync signal from the system >board. So, it would not be affected by different line frequency. I think that Martin meant interference between the CRT display and ambient lighting, such as fluorescent tubes or tungsten bulbs. I do not know, but it might be that the screen would seem to flicker if the lights flickered at 50Hz (or 100Hz) while the screen is flickering at 60Hz. I have seen how fluorescent tubes can cause flicker for a digital video camera (modern DSLR that supports video recording) at certain shutter speeds. But I guess my eyes are too slow to notice. Marko Message was sent through the cbm-hackers mailing listReceived on 2015-05-08 20:00:06
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