So I tried a quick test on my test cable and when
put in the smith chart mode it functions in a similar manner to
a Cartesian phase plot where the data is displayed from -180
degrees to +180 degrees, in a single continuous arc around the
outer left edge of the smith chart. Even though I had enabled
Expanded phase selected it seems that function is not applicable
when the smith chart display function is enabled. Interesting
test and TU agn for the idea.
Gedas, W8BYA
Gallery at
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 11/18/2018 1:44 AM, bownes wrote:
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Have you tried displaying your results on a Smith
chart?
Check out Dr Joel Dunsmore’s book, “Microwave
Component Measurements” for more than you ever wanted to know on
the subject.?
On Nov 18, 2018, at 01:00, Gedas <
w8bya@...>
wrote:
Thanks for that. It does in fact say phase
is measured +/- 180 degrees. Earlier I ran a quick test
using the expanded phase format and I think it is in fact
exactly what I want. Below is the same cable swept from
100 MHz to 300 MHz. The -90 degree and -180 degree points
appear to be at the right frequencies. So if it will help
others, un-wrapping phase or wrapping phase is very
closely related to the expanded phase display format
option of this ENA model. Too bad the users manual is
useless in discussing these and so many other neat
features.
<expand-phase-enabled.png>
Gedas, W8BYA
Gallery at
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 11/17/2018 10:10 PM, nj902
wrote:
Gedas wrote: "Can someone point me to some reading material
to help me understand how to measure phase ..."
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Look for references on "unwrapped phase" measurement /
display.
Like:
