Hi, Arthur -
I forgot to mention that I am a klutz when it comes to mechanical
things and I am not very imaginative. This sort of thing may be easy
for you, but it presents a challenge to me.
I looked at this approach for quite a while. I can't figure out how
to make the probe tip get a good connection to the BNC T connector
as the connector has a bigger hole than the probe tip diameter.
Also, the barrell of the probe does not go inside the BNC connector
even when the probe tip is completely inserted into the BNC hole.
Would it help if I upload a photo and dimensional drawing?
As for continuing to look for the adaptor, I have had a "saved
search" for these on Ebay for over a month and no hits. I would have
thought something would have shown up by now. But maybe not.
Thanks for your help.
John
--- In hp_agilent_equipment@..., Arthur Shulman
<dentist@n...> wrote:
Use a BNC 'T' as the tap in a 50 ohm transmission line. Use a small
cut-off piece of suitably small phosphor-bronze finger stock to
take up
the slack between the probe barrel & the inner diameter of
the 'T'. the
finger stock may be left in place in the 'T' after trimming. the
fingers
will retain it.
Keep lookiing for an adapter if you wish. They can be found for
much
less than $150!
Arthur Shulman
jocjo_john wrote:
I've got an 8405A Vector Voltmeter. The probes have a barrell
with a
tiny pointy point coming out. The pointy point is about .03 in
diameter and the barrell is about .288 diameter.
It would be nice to be able to connect these probes to a
directional
coupler or into a transmission line. That would require a way of
converting the probe to a BNC connector. Aha! I see that HP had a
BNC adaptor #10218A for that purpose. They also had a kit
#11064A. I
found the BNC adaptor for sale for $150. But that's about what I
paid for the whole instrument!
What do others do to be able to connect these probes to real
circuits?
Thanks for any suggestions.
John
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