RDS VAST XXT RC-CAA precision on the new shorted head TL3

[[Lu...]]

Hi guys,

I'm working with a brand-new Contura 700/1000/600 machine.

We purchased it with the new RDS VAST XXT TL3 shorter head.

Does anyone know the accuracy of the CAA function? I already have quite a few angular positions configured with different styli.

I was thinking about using the CAA function to reduce calibration time, but I read somewhere that the accuracy with CAA isn't particularly good.

I've already asked Zeiss France, but no one seems to know the actual accuracy. Some people told me it's around 0.1–0.2 mm, while others mentioned 0.05 mm.

Does anyone have any information or experience with the RC-CAA function?

 

luis 

Edited yesterday at 01:48 PM

[[Ri...]]

I am using the original RDS CAA sensor in CAA mode, its accuracy is outstanding.

I have compared it to the VAST XTR for my own sanity and haven't found anything that would trigger an issue with accuracy.

I don't have actual accuracy numbers. I have used features with the XTR for Diameter and location then used the same features with the RDS with no loss of accuracy up to the 5th decimal in Inch's.

Worst case I noticed was a compound angle feature and my true position was .00011" (RDS) different in the result. Considering two axis and two rotations, that's quite accurate in my eyes.

[[Lu...]]

Thanks for your help,

Please sign in to view this username.

Do you know if I need to create another stylus profile with a different name to enable CAA, or can I use a hybrid setup? In other words, can I use CAA while keeping the standard calibration for a passive stylus?

[[Jo...]]

Please sign in to view this quote.

Sort of!  It has to be a separate stylus system.  You will have to manually reassign which probe is in your probe holder, the regular or the CAA probe, to switch between the two. But there is no problem having both set up and qualified.