[Amps] hp Z meters tspa

[John T. M. Lyles]

I use a hp 4815A impedance meter often. Works very well, 1 MHz to 110 
basically. Direct reading on analog meters, mag and phase. As for the 
vector voltmeters, I haven't used them for such.

I just bought a hp8751A network analyzer (5 Hz - 500 Mhz, little 
brother to the 8753 series) on EPAY for $1500. It came perfect, lit 
up with 1997 firmware 5.07. Sweet. Looking forward to 1990s 
technology test equipment.

73
John
K5PRO

>
>Message: 6
>Date: Sun, 12 Jun 2005 07:51:24 -0700
>From: Dan Sawyer <dansawyer at earthlink.net>
>Subject: [Amps] how to measure impedance - 8405a vs 8415
>To: AMPS <amps at contesting.com>
>Message-ID: <42AC4BEC.3080903 at earthlink.net>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>All,
>
>I would like to measure impedance. Does anyone have direct experience
>with using either an 8405a or an 8415 to do this? If so what are the
>relative merits of each?
>
>A second question: I have an 8505a that appears to be close to working.
>When attempting to take a reading the meters seem to move continuously.
>Sometime this is obviously wrong and it oscillates from min to max.
>However sometimes it could be 'ok' and the oscilation  is 10% or so of
>full scale. Is this normal??
>
>Thanks in advance,
>Dan