binder@fizbin.DEC.COM ("When you do something well, repeat it often.") (01/21/87)
From gviernes@WHEELER-EMH.ARPA: >> I've been having a read problem that seems to be getting the >> best of me. ... >> ...to copy them, I get read errors. I have an enhanced //e and my >> drive speeds are 200.2 and 199.7 on drives 1 and 2, repectively. Reply from Paul Blumstein (ttidca!paulb) > Perhaps your problem is that your drives are too slow. The "correct" > speed is 300 RPM. Paul, you 've misinterpreted the numbers in the original query. The correct speed is indeed 300 RPM. Expressed as period instead of frequency, that comes out to 200 milliseconds per rotation. The usual rotational speed tolerance is 2 percent = 196 t0 204 msec/rot. Apple is a little tighter than that, but 200.2 and 199.7 are still more than acceptably close - for all practical purposes, they're dead on. Cheers, Dick Binder (The Stainless Steel Rat) DEC Enet: ASD::BINDER UUCP: { decvax, allegra, ucbvax... }!decwrl!asd.dec.com!binder ARPA: binder%asd.DEC@decwrl.ARPA