Gentlemen,
I have two HP 8443 tracking generators, one is an "A" model with the
counter and one is a "B" model without the counter. Both use SMB
connectors on the coaxes that interconnect the individual PC board
assemblies. SMC connectors are used on the step attenuators and the
blocking capacitor assembly on the output connector. Note that one
end of each RF cable is permanently attached to the cover of the PC
board assembly.
I worked for Hewlett-Packard at the factory where the HP 8443's were
manufactured and I don't recall ever seeing anything but SMB and SMC
connectors used for this type of application in those days.
As for the interconnect cable from the tracking generator to the
spectrum analyzer, it's not necessary to have the connector shell. If
you can find the appropriate coax connector inserts (sorry, but I
don't know the part numbers), they can be used without the shell, as
there is enough friction to hold them in place when inserted into the
connectors on the tracking generator and spectrum analyzer rear
panels. The positions on each end correspond one-for-one. Of course
you'll have to be careful not to dislodge the connectors, but for
bench top applications this should not be a problem. Also, the system
may not pass the original specifications for radiated emissions and
susceptability without the original interconnect cable, but again
this may not be a problem for most applications.
Regards,
Bob Dildine
--- In hp_agilent_equipment@..., "Dave Brown"
<tractorb@...> wrote:
David-
If they ARE microdots, then it may be an option to recover a
connector
plus a short length of coax from surplus equipment-depending on
what
test lead(s?) you want to make up. Microdots were used in 76 and 78
series Lenkurt (analog microwave radio) gear-for example.
But pictures are essential to know exactly what you need.
DaveB, NZ
----- Original Message -----
From: "J Forster" <jfor@...>
To: <hp_agilent_equipment@...>
Sent: Saturday, November 17, 2007 4:32 PM
Subject: Re: [hp_agilent_equipment] Hp-8443A Tracking Generator
Problems
jfor@...
As to a source, there are a number of distributers, but they will
likely be
expensive.
-J
David C. Hallam wrote:
John,
They are gold plated and have Teflon insulation. I'll send a
couple of
pictures tomorrow. I hope you can identify them and give a
source
of
supply. What is your email address?
David
-----Original Message-----
From: hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]On Behalf Of J
Forster
Sent: Friday, November 16, 2007 6:45 PM
To: hp_agilent_equipment@...
Subject: Re: [hp_agilent_equipment] Hp-8443A Tracking
Generator
Problems
They are very likely Sealectro or MicroDot. If you email me a
(small ) pic
of
both M and F, off list, I'll see if I can ID them.
If they are gold plated with Teflon insulation between center
and
outer
conductors, Sealectro is the most likely choice.
-John
David C. Hallam wrote:
> I did call them GOOFY because that is what they are. They
are
goofy
because
> I think the only place in the whole world they were used was
the jacks
and
> plugs for the cables of the connections between modules of
the
8443A.
They
> are not SMA, SMB, or SMC. I have looked at drawing of each
of
these
types
> are the are not same as what HP used. I have no idea what
they
are or
> where to obtain them. I would certainly appreciate it if
anyone
could
> identify them along with a source of supply. As far as I am
concerned
their
> official description is "unobtainiun".
>
> David
> KC2JD/4
[Non-text portions of this message have been removed]
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