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Darrell
Tim,
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I am running an AMD K6 II 400 and only require 2000 steps per inch. I am running freqmod Feb 29 I believe. When I tried it on my Bridgeport, movement started getting ratty at 15 IPM and maxed out at 20 IPM. Looking at the pulse train with a scope, pulse jitter (timing between steps) got worse up to 20 IPM and then smoothed out to near perfect at 30 IPM and then started going bad again. At 20 IPM the pulse train was varying by as much as 3/4s of the signal width. I talked to Fred Proctor and he agreed that timing in EMC was the problem. Using micro stepping and small motors would probably let you move much faster but with 1100 oz in motors and full stepping on the Bridgeport it requires a clean signal. I am used to getting 120 IPM. I have used the Microkinetics 8010 drivers with good success and I think the problems that users have been having on this group is directly related to the poor step signal timing. Darrell ----- Original Message -----
From: Tim Goldstein <timg@...> To: <CAD_CAM_EDM_DRO@...> Sent: Thursday, May 04, 2000 12:05 PM Subject: Re: [CAD_CAM_EDM_DRO] Conversational Programming and NAMES- very long! Darrell,setup on an AMD K6 500.smooth step pulses. The problem with EMC and steppers now is that the pulse traindiscussion of shop built systems, for CAD, CAM, EDM, and DRO.
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