John and Lothar,
Thanks very much for your comments...you convinced me to forget
interconnecting the 8568b/141t...not worthed.
The long story is that I bought the 8568B without 85662A on ebay, and
discovered the unit was missing the interface card...enough to stop me
seeking for a display unit until I resolve my problem (finding an
interface card seems hopeless...).
Meanwhile, I bought a 141T display (alone), then gradually found
missing modules (8552/8553/8555) which I succeeded fixing.
Not having the energy (and money) to reinvest in an other 8568, then
85662, I'm rather closer to unload the 8568 I initially
got...sniff...and never be able to see what "high stability" looks
like...hihi
73 and best regards
pierre...ve2ky
--- In hp_agilent_equipment@..., lothar baier
<microwaveengineer1968@...> wrote:
man youre right, i confused the 8510 and the 8566 units, the 8510
actually has the processor in the display.
hmmm why would anyone go through the trouble trying to build a
85662A USB emulator ?
with 85662A available under $500 this would be a dead end project
John Miles <jmiles@...> wrote:
In theory it could be done, because the actual
microprocessor is in the RF
section, but in practice I agree with Lothar that it would be a huge
waste
of time.
You'd need to synchronize the sweep of the 141T with the 8568B somehow,
which might be possible, but you'd still need to fool the 8568B into
thinking the 85662A was connected, because it expects to get data
(such as
marker amplitudes) back from the display section. And you would get
none of
the 8568B's alphanumerics or graticule graphics, because those are
generated
by the vector hardware in the 85662A. Even if you succeeded in getting a
trace, you'd have tied a really-nice spectrum analyzer to a
much-cruder one,
and the system will have all of the limitations of the 141T and none
of the
advantages of the 8568B except, I guess, its stability.
At some point, I'm sure someone will build an adapter that lets a PC
emulate
the 85662A via USB, but that adapter is not going to be cheap or simple.
Meantime, sell the 141T on eBay and buy an 85662A.
-- john, KE5FX
-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]On Behalf Of lothar baier
Sent: Thursday, November 01, 2007 6:48 AM
To: hp_agilent_equipment@...
Subject: Re: [hp_agilent_equipment] Can 8568 be used without display
unit?
I dont think that will work, as far as i remember the Display
also contains the processor card, the second question is why
would you want to do so anyway ?
using a external display would deprive you from using markers
and the readout which would make operating the whole thing alot
more difficould, displays can be found for about 2-400$ and if i
were you i would invest this money rather than wasting your time
pierre288 <pierre288@...> wrote:
Hi,
Is it possible to use only a 8568B rf unit without the IF-display unit
(85662)?
I have only the 8568B (without 85662) and I wanted to use it with my
old 141T tuned at 30Mhz which I think to be the IF output of the
8568...
Thanks for your help...
pierre ve2ky
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