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Re: HP 8566A / B differences
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John Miles
开云体育Hi,
Mike --
?
I only
had the chance to spend a few days with the 8566B, but I was definitely
impressed.? It is about 12 dB 'hotter' at 10 GHz than the Tek 494AP I
normally use, and the 1-3-10?resolution bandwidth scales have a real
usability advantage over?the Tek's decade steps.? The display quality
is also light-years ahead of Tek, in that they implemented a serious
high-resolution?graphics display instead of using a
warmed-over?oscilloscope?interface.? On the other hand, the Tek's
control panel is a bit?nicer to use due to its 3-knob design, and its
signal-counter feature has come in handy many times.? I ended up keeping
the Tek over the 8566B for those reasons, and because I'm just more familiar
with it and have limited space in my equipment rack.? It was a close call;
the 8566B is one hell of a nice?piece of gear and I imagine the -A model is
no different in that respect.
?
I did
have a chance to add 8566B support to my GPIB plotter emulator app, and one way
you (and other HP analyzer owners) could help is by seeing if it works on your
8566A as well.? This is at
-- the easy way to test it is to unzip the files and run "7470 18" to see if it
can grab a plot from the analyzer at GPIB address 18, or wherever you've
configured it.? This *should* work on an 8566A or an 8568, but again,
nobody has tried it yet.
?
My
understanding is that the 8566B used a 68000 CPU (pretty exotic stuff in those
days; they were right there on the leading edge along with Apple's early Lisa
and Mac machines), while the 8566A used a different, more proprietary
controller.? But I don't know if that translated into any real
functionality differences, or if the RF performance is any difference.? I
don't know if the CRT is any different, or even if my 85662A display section had
a "new"-style CRT or not.? This was the first one I've
seen.
?
A GPIB
programming manual for the 8566A would be handy, if you have that in .PDF
format.? It would tell me a lot about what differences there are between
the two models.? Agilent's site lets you download
the 8566B manual, but not the 8566A manual, as far as I can tell.?
?
--
john KE5FX
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