ragg0270@uxa.cso.uiuc.edu (Richard Alan Gerber) (12/11/90)
Thanks to all who replied about the fast system clock in my new A2000HD. A few people responded that their A2000s had fast clocks also and that the cause was attributed to noise in the power line, even though it looked OK on a scope. Sure enough, if a plug my computer into a socket across the room, the clock works OK. Question (for Dave H?): Is the A2000 really that sensitive to any noise in the 60Hz line voltage. My A1000 and a Mac Plus have always worked just great plugged into the same source. I can not find anything else plugged into this circuit. Is it possible something is wrong with my computer? (This is really a pain, since I like to use the datestamp feature of SAS/C 5.10.) Thanks, Richard gerber@rigel.astro.uiuc.edu ragg0270@uxa.cso.uiuc.edu
blgardne@javelin.es.com (Blaine Gardner) (12/11/90)
ragg0270@uxa.cso.uiuc.edu (Richard Alan Gerber) writes: >Thanks to all who replied about the fast system clock in my new A2000HD. >A few people responded that their A2000s had fast clocks also and that >the cause was attributed to noise in the power line, even though it >looked OK on a scope. The problem is inside the power supply itself. If you're comfortable dealing with the guts of power supplies, a .01 uF capacitor between TICK and GROUND should cure the problem. If you've never messed with high voltage stuff before, your dealer should be able to do it for you, it is a known problem with some systems. -- Blaine Gardner @ Evans & Sutherland 580 Arapeen Drive, SLC, Utah 84108 blgardne%javelin@dsd.es.com ...dsd.es.com!javelin!blgardne (I hope) {decwrl, utah-cs}!esunix!blgardne DoD #0046 My other motorcycle is a Quadracer. BIX: blaine_g