Re: [CAD_CAM_EDM_DRO] Re: Teledyne Gurley DRO

On Sat, May 03, 2003 at 12:05:16PM -0000, abenedro wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:
> >
> >
> > abenedro wrote:
> >
> > >Hi,
> > >I have a Teledyne Gurley DRO from the 70's which will only read in
> > >metric although the thumbwheel switches should allow it to read
> > >imperial as well as metric. I suspect it may have been configured
> > >this way since new to prevent mistakes as it was off a Swedish
> milling
> > >machine used on a Sandvik production line. The readout is a
> > >Pathfinder model 8770 and uses TTL updown counters (74192) and
> > >minitrons for the displays.
> > >
> > >Anyone got a schematic for this box so I can work it out or heard
> of
> > >this before?
> > >
> > >

I have a Pathfinder-5 DRO, which I think is a later model from your
description (it uses a microprocessor and LED displays). T/G was very
helpful getting a scale repaired, but they couldn't help me on a
schematic for this box either. If the board ever goes bad, I figure
on keeping the signal conditioner board and replacing the guts with
either a PIC or a PC on a card system.

Paul
--
Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows