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Re: TDR Python Script
Hello team, Will it be possible to have this script as a standalone program? Even if we have to install a simple console? Just a form where to put the values.... I guess an Excel Sheet is too
By CT2FZI · #1410 ·
Re: Tektronix overview, Parameters_Poster plus a question
Hello Frank and thank you for answering my question. Makes perfect sense and so logical! Enjoy whatever you are busy with and as always remember to KEEPSMILING :-) 73 Nigel ZS6RN ex G8DEV
By Nigel ZS6RN · #1409 ·
Re: Place to buy
Warren, I was assuming the Si5351 gave a consistent square wave from clk1 into the bridge. However, the Si5351 CMOS drivers can be programmed for a max current of 2,4,6 or 8 ma, and at 8ma it can
By Jerry Gaffke · #1408 ·
Re: Your NanoVNA version - good clone, semi-bad clone comparison
Hi Warren, Logmag S21 Jim K. K8SLC
By jimcking@... · #1407 ·
Re: The benefits of screening
the first one i bought on eBay from tztmotor was (as shown) a white one with a salamander logo. it arrived with S, O, L SMA bits. it has no shields, no clamshell case, and no cables. 2-trace 900 MHz
By kb3cs · #1406 ·
Re: TDR Python Script
Glad you found it useful neb40gsm :)
By Salil Tembe · #1405 ·
Re: Yet another NanoVNA case
You can use shapeways, imaterialize, 3d hubs or any number of other places. My advice is that if you are the sort of person that enjoys tinkering with this sort of thing, you are highly likely to
By HexAndFlex · #1404 ·
Re: Tektronix overview, Parameters_Poster plus a question
Hi Nigel, As a statistician, I can answer the S parameter subscript pronunciation question. It¡¯s because they are from the S parameter matrix. Matrices, of course, have rows and columns. So S11 is
By K4FMH · #1403 ·
Re: Tektronix overview, Parameters_Poster plus a question
Sent using https://www.zoho.com/mail/ Yes, S one one and S two one not S eleven or S twenty one. . It refers to the port numbers (in this case 1 and 2). Been this way for as long as I can
By Ron Spencer N4XD · #1402 ·
Re: Place to buy
Jerry There was no gain adjustment on the Rigol. The yellow sweep begins at Marker 1 at 250 MHz. When it reaches 301 MHz the fundamental drops back to Marker 2 at 100 MHz and the 5351 level is
By Warren Allgyer · #1401 ·
Tektronix overview, Parameters_Poster plus a question
Greetings again from ZS land :-) Whilst searching for VNA information (basic 101 stuff) I came across an introductory write up on the Tektronix web site together with a 'poster' that provides (to my
By Nigel ZS6RN · #1400 ·
Re: Place to buy
Warren, Thanks for the SA screenshot. It is instructive. A few random comments: I'm a wee bit lost here: So the slight 600 mhz spike is perhaps not real, if it were real then it would be happening
By Jerry Gaffke · #1399 ·
Re: Quick question ; Change the scale
Thanks - seems to be working now. Grover K7TP
By Grover Cleveland · #1398 ·
Re: Quick question ; Change the scale
see the nanovna menu structure in the files section, version 1.1 start with the display and migrate to scale/div. works FB... Alan
By alan victor · #1397 ·
Re: Is anyone working on adding time domain reflectometry (TDR)
Agreed, but in the context of most of the users on this forum, TDR is more than likely to be used for length and fault finding.
By Larry Rothman · #1396 ·
Re: Is anyone working on adding time domain reflectometry (TDR)
The TDR gives you a *lot* more than just length. See http://literature.cdn.keysight.com/litweb/pdf/5989-5723EN.pdf You can¡¯t assume anything about the velocity factor either - it¡¯s far from a
By Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> · #1395 ·
Re: nanovna and TDR
If I read the write up correctly, one thing the user must do using the Python script is insert into it the velocity factor for the cable being measured.? Unfortunately, the manufacturers spec
By Ron Spencer N4XD · #1394 ·
Re: TDR Python Script
Thanks Salil, with your TDR Phyton Script I can now use my nanoVNA to measure cable lenghts as well as detect cable and connector faults. neb
By neb · #1393 ·
Re: Place to buy - 600 MHz spike
Thanks Hugen! ? Mike
By Mike Brown · #1391 ·
Re: Place to buy - 600 MHz spike
They used my earlier version of the firmware, there may be bugs, if the hardware has no major errors, update the firmware, you can eliminate this problem. hugen
By Hugen · #1390 ·