Jim,
I already have the info on the remote interface, taken from the PTS 160
doc and other sources, I was asking if he was talking about some
specific gadget.
I also was using at those years some remotely controlled PTS's , did you
know the JPL MK IV receiver exciter? I think it was also a 040 but I'm
not sure, because these changed the phase smoothly but I think that
there is an option with a DDS to allow such thing.
Unfortunatelly those exciters are now dismantled and I think the doc was
dumped, anyway I'll have to make a phone call.
Ignacio
On 09/02/2012 1:17, Jim Lux wrote:
On 2/8/12 3:23 PM, EB4APL wrote:
I want to take advantage of the topic just to ask if anybody has any
manual or schematics of the PTS 040. I realize that the PTS 160 is close
enough, taking in account the different frequency range, and they use
almost the same modules but it would be nice to have the right manual.
What is about the remote interface? Please, share the info.
Way back in the 80s, I used a PTS and the remote interface, so I'm
going off memory. As I recall, it's basically a BCD parallel thing
with a strobe. The general architecture of their synthesizers is a
series of decade modules, so the parallel interface just extends that
to as many digits as you have modules.
Settling time to the new frequency is pretty fast (<1 microsecond, I
think) but not necessarily phase continuous, and, there can be
glitches during the transition (i.e. if one module switches faster
than the others). no fancy-shmancy DDSes back in those days.
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