Help us out a bit. After cal, what are you reading with the provided load,
short, and open? Pictures always help. Connect a 100 and 25 ohm resistor
with minimal leads acorss Port 00. Both should read correctly on the 2:1
circle of the Smith Chart. What do the resistors read? Again, pictures of
the display are always helpful. When making these measurements, do not use
a wide frequency range as a stand alone device there are only 101 points
evenly placed over the specified range. Using NANOVNA-SAVER on a PC, you
can specify as many points as you are willing to wait for.
Dave - W?LEV
toggle quoted message
Show quoted text
On Wed, May 13, 2020 at 5:09 PM <matthew.quirke@...> wrote:
I have just recently received a nanoVNA from Aliexpress; Some of the
measurements seem very odd - like SWR and the S11 inductance, but I don't
have the experience(yet) to gauge if the results are OK or the unit is at
fault.
I wondered if someone might be able to suggest a list of tests to preform,
like the ¡®Specification¡¯ suggestion above, where new users could verify
their NanoVNA is functioning well/ just OK or is faulty?
The difficulty might be tests that could be preformed without specialist
calibration equipment..?
I would be happy to put it together in a document, with appropriate pics
etc.
For instance something like...
Test 1: The NanoVNA should display a signal trace from the START to STOP
frequency when testing a inductor in series with port 1(CH0) - S11
Test 2: ....
--
*Dave - W?LEV*
*Just Let Darwin Work*
