[time-nuts] PTS synthesizers
GandalfG8 at aol.com
GandalfG8 at aol.com
Thu Feb 9 18:34:00 UTC 2012
In a message dated 09/02/2012 02:08:49 GMT Standard Time, eb at telight.com
I don't remember which owns which, but some PTS models are under the
Wavetek brand. I have a Wavetek 5135A, which looks and acts just like
the PTS 160
As far as I can tell, it seems to have started with Rockland, eventually
absorbed by Wavetek, with PTS coming along a bit later and perhaps formed by
ex Rockland or Wavetek personnel.
The earliest unit I've seen, not saying there might not have been something
earlier, is the Rockland 5600 and the original Wavetek 5120As were branded
"Wavetek Rockland" with later ones just branded "Wavetek".
All PTS units I've seen seem to be more recent, so although the PTS web
site does claim they announced their first product in 1975 I have wondered if
that's actually a reference to the original Rockland products, which again
might suggest some at least of the original personnel still being involved.
I'm not familiar with the 5135A, but if that's very similar to the PTS160
then it sounds like yet another variant.
One things for sure, not only do the Rockland 5600, Wavetek 5120A, and
PTS160, have basically the same spec, but having compared them in detail I was
quite surprised just how much of the electronics they share too.
There are differences but there's also a heck of a lot that's the same
even though module part numbers may vary, and some differently laid out module
schematics turn out to be almost, if not completely, identical.
I also have a PTS D310 that I plan to fix up with two
sets of wheel switches to be built into the front panel, but don't
recall if I already found the parallel interface data - especially
the pinout. Is that readily available?
I've not seen the internal layout of the D310, but all the necessary
schematic information for the switching should be in any of the manuals.
I've got some High Res photos of the motherboard of one on my PTS160s that
might help give a better idea of how the switch wiring is implemented in
practice, and could take more of the actual switch connections if that would
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