Also remember that you must press the reset menu item each time before a
calibration , otherwise it doesn't take.
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On Mon, Jul 12, 2021, 11:39 AM Larry Rothman <nlroth@...> wrote:
If you use the save under the Calibration menu, it prompts you for a
memory slot #.
If you use the save under the Config menu, it doesn't
On Monday, July 12, 2021, 10:17:46 a.m. EDT, Christopher Maness <
christopher.maness@...> wrote:
> On Mon, Jul 12, 2021 at 6:34 AM Larry Rothman <nlroth@...>
wrote:
Chris,
Memory slot 0 is the startup memory that is recalled when you turn the
nano ON.
I did notice that.
There are two locations where you save on the nano: the memory slots
are used to save freq, marker, scale, trace and cal data and the SAVE
button un the Config menu is used to save general configuration data such
as touch cal, colours, graticule type and a few other items.
How do I make sure I am saving to the memory slots and not the general
config menu? I have a feeling that is what is going on.
As for the cable, you need to calibrate the nano with the cable
attached to take into account the reference plane.
Yes, I figured and that is how I did it, but the calibration did not
zero out the cable. It was not in the correct place for an open stub
that had been calibrated out. The problem maybe connected to my other
problem above. I also noticed that running the thru test did not also
stick. I was showing 1dB loss with the coax going from C0 to C1. It
does seem to work in Memory 0, but I could not get the calibration to
stick in Memory 1. That is likely because I am not saving it
correctly.
You can also use the e-delay in the Scale menu to shift the start of
the measurement to the end of the cable with a 50 ohm reference attached. I
slowly set the e-delay >>until the Smithchart shows 50 ohms and then attach
my unkowns.
What is the theory behind the edelay?
Regards,
Larry
Chris KQ6UP
