开云体育

As promised, I made some rigorous measurements of my home brew fixture for making transmission measurements of various HF circuit elements using a "professional" instrument. I could have used the

If Sysjoint does not listen to customers and provide a firmware solution you have only three choices: live with it, muffle it or cut the beeper circuit.

Dave, the connector is part of the fixture, but since its impedance is 50 ohms, its capacitance does not contribute to the stray fixture capacitance. If you measure an uninstalled connector, you can

Broam, the BNC connectors are part of the fixture and I can not eliminate them. Yesterday, I even questioned my own measurement of 2.7 pF. I need to revisit that today as it was a hurried measurement.

Ohhh, that's too bad. Is there really no software based solution? I really don't like the idea of physically destroying something in a "brand new" (for me) device I just bought. ?

Dave, out of curiosity I created a circuit model for a common-mode choke. It has an inductance, capacitance, and resistance in parallel. I chose the values to mimic attenuation results for a

I have found that all beepers can be permanently silenced with a pair of diagonal cutters. ;-) A less invasive method is to stuff the transducer full with putty, Blue Tac, epoxy or similar physical

Thanks for the info, Dave. Please measure a common-mode choke using the fixture with your HP VNA with S11, S21, S12, and S22 and post the .s2p. I'll see how the Y21 method compares with the usual S21

1) My take on dynamic range is the ratio between the fixture with nothing between the two ports to a fat and short as possible conductor between the ports. With the recent images and using the

And with HP test equipment now KeySight, I dub it KeyOutOfSight. [email protected]> wrote:

One of the definitions for HP is High Price!! *Clyde K. Spencer* [email protected]> wrote:

OK, after looking more carefully at the photos, I think you're referring to the ratio of the desired signal through the device under test to the residual feedthrough with the device absent. Correct me

Dave, what do you mean by dynamic range in this context? Brian

You've all seen my fixture I use for evaluating transmission measurements on various items, especially common mode chokes, filters, and other circuits. Well, that old fixture was limited to about 35

Yes. My last visit to JB was just after they closed. Sitting on the concrete table outside the store was a Tektronix 7623A, with a sign on it that read "FREE". You can guess what happened next. JB was

Dave, we all miss J. B. !! I can't count the number of times we, collectively, solved (unpaid consulting) design problem with unknown designers in the isles of J. B. Saunders. And......, then found

And J. B. Saunders .... DaveD KC0WJN [email protected]> wrote:

Yes, when we can't find something at Ace, we head to Boulder. White Rock, New Mexico also had something similar that "served" the lab at Los Alamos. Good hardware stores are rare these days with all

And Yardley Beers, W0JF, a Boulder legend along with McGukins. Ed McCann AG6CX

I severely miss McGuckins. DaveD -- This email has been checked for viruses by Avast antivirus software. www.avast.com