v.digit using Altek AC30 (Problems)

Raymond Venneker venn at geo.vu.nl
Thu Jun 24 06:46:31 EDT 1993

> > I am attempting to run v.digit using an Altek AC30 digitizer (format 8,
> > 9600 baud) using the al30f8_16 driver.  The problem I run into is when I
> > attempt to register a map.  I am able to enter the coordinates (using the
> > keyboard) and then register the points (using the digitizer cursor).  When
> > I press Key<4> (accept residuals), the program bails out at the verify
> > screen and returns the message "Digitizer read error: exiting" at which
> > point I am then back at the GRASS4.1> prompt.  I have checked the dip
> > switches on the digitizer and everything appears to be in order.  Has 
> > anyone else experienced a similar problem?  Any suggestions?
> I have exactly the same problem with the new v.digit.  Please help !!!
> The only difference for me is that I have a AC40 controller, but that
> shouldn't change anything in the setup.  This has been a unsolved problem
> for me for a long time, but I haven't had the time to dig deep into the
> problem.
> Lars
> Lars Schylberg                          Email: larss at fmi.kth.se  
> Dept. of Geodesy and Photogrammetry 
> Royal Institute of Technology (KTH)     Tel.   +46 8 790 86 33   
> S-100 44  STOCKHOLM, SWEDEN             Fax.   +46 8 790 66 10

Well, I have experienced this problem about a month ago. I thought it
was an error in my digitizer setup file and haven't really looked at it
since then. However, we use a *Summagraphics Microgrid III*. So, I
guess it's in the code.

Raymond Venneker - Earth Sciences, Free University Amsterdam

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