【转帖】measuring ste height - c-dmis user forum.txt

huangyhg

measuring ste height
i have a visio 300
c-dmis 4.3
i set u 2 gage blocks side by side 1 .600" and 1 .550"
i measured a the to of the .600" block with an auto focus oint max zoom
set the (z) origin to that oint
measured the same oint 10 times and got a range of .00222"
did the same on the .550" block and got a range of .00247"
i don't understand i feel this should be more accurate than this.
does anyone have any settings suggestions that i can try?
thanks
__________________
the world is a dangerous lace, not because of those who do evil, but because of those who look on and do nothing.fff">fff">
gage blocks are shiny are they not?
__________________
b&s excel 7-10-7: h10mq: t20
c-dmis 3.7 mr3
i should have also mentioned that i know zi about your system - the shiny thing was just a guess.
what are the ublished accuracy secs?
__________________
b&s excel 7-10-7: h10mq: t20
c-dmis 3.7 mr3
">
i have a visio 300
c-dmis 4.3
i set u 2 gage blocks side by side 1 .600" and 1 .550"
i measured a the to of the .600" block with an auto focus oint max zoom
set the (z) origin to that oint
measured the same oint 10 times and got a range of .00222"
did the same on the .550" block and got a range of .00247"
i don't understand i feel this should be more accurate than this.
does anyone have any settings suggestions that i can try?
thanks
">
welcome to vision... on the better systems, i would exect to see around .0002"-.0005" @ ~12x otical.
this could be software or hardware.
can you reduce your focus target size to it's smallest?
adjust the seed of the focus - slower = better.
adjust the "backoff" and "focus through" to the smallest settings. this is the total evaluation range of z for each focus.
try only using coaxial illumination if ossible.
you need a target to focus on, something with contrast. with a gage block, a finger rint works nice.
__________________