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Vector voltmeter hp-8405a   Message List  
Reply | Forward Message #21339 of 24748 |
Re: [hp_agilent_equipment] Vector voltmeter hp-8405a

Check out www.hpmemory.org<http://www.hpmemory.org/>

Look under resources then AP notes....its there

K


----- Original Message -----
From: Mike Czuhajewski<mailto:wa8mcq@...>
To:
hp_agilent_equipment@yahoogroups.com<mailto:hp_agilent_equipment@yahoogroups.com\
>
Sent: Sunday, July 05, 2009 8:13 PM
Subject: Re: [hp_agilent_equipment] Vector voltmeter hp-8405a





>Regarding Vector Volt (Impedance) Meters review HP AP NOTE 86

And where can one find this app note online? It does not appear
to be at BAMA, hparchive.com or agilent.com, and a Google search
was not helpful. Thanks.





[Non-text portions of this message have been removed]
Mon Jul 6, 2009 2:36 am

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colquan1066
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Forward 		Message #21339 of 24748 |
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Hi All: I have a hp-8405a Vector voltmeter (with good probes). I apologize for perhaps a dumb question, but what do I test with it? What is it good for? Are... 		Rasputin Novgorod
priapulus
Offline Send Email 		Jul 5, 2009
10:44 pm

It was used to measure the amplitude and phase of voltages in the sub-microwave region. In the days when people build IF strips, etc., out of discrte...
J. Forster
j_forster911
Offline Send Email 		Jul 5, 2009
10:55 pm

john There are still things you cannot do with a VNA you can do with a vector voltmeter, i build a teststation one time to characterize LDMOS devices up to...
Lothar Baier
lotharbaier
Offline Send Email 		Jul 5, 2009
11:57 pm

I didn't say all. A VNA is essentially for 50 (or 75) Ohm systems. Outside of that a VVM is useful. IF strips, for example, were nothing like 50 Ohms ...
J. Forster
j_forster911
Offline Send Email 		Jul 6, 2009
12:27 am

Hello, I have one of these units, its main interest is to measure the phase difference between two signals, it is also a good HF voltmeter. Keeping the probes...
Edouard Griffiths
edgreiffiths
Offline Send Email 		Jul 5, 2009
10:58 pm

... From: "Edouard Griffiths" <f4exb@...> To: <hp_agilent_equipment@yahoogroups.com> Sent: Sunday, July 05, 2009 3:57 PM Subject: Re:...
Richard Knoppow
reknoppow
Offline Send Email 		Jul 5, 2009
11:10 pm

basically you can measure complex impedance, phase relationships and magnitude , its a very versatile instrument , add some couplers/bridges and you can use it...
Lothar Baier
lotharbaier
Offline Send Email 		Jul 5, 2009
11:52 pm

you can use it as a tuned rf voltmeter too i know someone who has owned one for over 30 years and he uses it mostly as a tuned rf...
arthurok
arthurok_2000
Online Now Send Email 		Jul 6, 2009
12:01 am

the 8405 is considered the grandfather of them all, its manually tuned but was produced by HP for a long time before replaced by the 8508A, rohde came out with...
Lothar Baier
lotharbaier
Offline Send Email 		Jul 6, 2009
12:15 am

If my poor old memory serves me, the 8405 was one of the instruments that we built at HP's Rockaway NJ factory in the late 1960s. As a side note, after the PC...
Mike Sloane
mikesloane
Offline Send Email 		Jul 6, 2009
10:59 am

One of my colleagues told me that he took one of these up a (high!) transmission tower to measure something (antenna or associated phasing network).........it...
John
john_be_es
Offline Send Email 		Jul 6, 2009
11:45 am

Blair, Simply put. you have one of the earliest amplitude & phase measuring meters which covered RF, up to 1GHz. With a few accessory pieces, it can be used in...
Pete
n3vw
Offline Send Email 		Jul 6, 2009
1:37 am

Greetings, Regarding Vector Volt (Impedance) Meters review HP AP NOTE 86 Ken ... From: Pete<mailto:peterawson@...> To:...
ken chalfant
colquan1066
Offline Send Email 		Jul 6, 2009
1:53 am

... And where can one find this app note online? It does not appear to be at BAMA, hparchive.com or agilent.com, and a Google search was not helpful. Thanks....
Mike Czuhajewski
wa8mcq
Offline Send Email 		Jul 6, 2009
2:14 am

http://www.hpmemory.org/an/pdf/an_86.pdf here you go ________________________________ From: Mike Czuhajewski <wa8mcq@...> To:...
Lothar Baier
lotharbaier
Offline Send Email 		Jul 6, 2009
2:24 am

Check out www.hpmemory.org<http://www.hpmemory.org/> Look under resources then AP notes....its there K ... From: Mike Czuhajewski<mailto:wa8mcq@...> ...
ken chalfant
colquan1066
Offline Send Email 		Jul 6, 2009
2:36 am

Lothar, thanks for the link to the file for the app note. I also checked the home page, www.hpmemory.org, and it looks like another excellent HP resource. I...
Mike Czuhajewski
wa8mcq
Offline Send Email 		Jul 6, 2009
2:46 am

the 8405a can be used as a tuned voltmeter for checking harmonic and noise levels of a signal more accurately then with most older...
arthurok
arthurok_2000
Online Now Send Email 		Jul 6, 2009
10:15 am
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