[comp.periphs] Disk testing for phase margin etc.

Michael_J_Ward@cup.portal.com (08/23/88)

Is there anyone reading this conference who is familiar with testing
hard disks and/or floppy disk drives using time-interval counters for phase
margins, bit shift etc.? What is the preferred piece of test equipment--bit-
error rate testers, etc? for general testing of such products?
.