On Thu, Nov 24, 2022 at 07:25 PM, Jim Lux wrote:
That's not generally true
Jim,
Ok, my bad, my answer was too short, I should have written: Don't be surprised if you measure 50 ¦¸ - and if you do not see 50 ¦¸ think twice what could be the reason. You gave good examples of influence:
On Thu, Nov 24, 2022 at 07:25 PM, Jim Lux wrote:
only if the power is on
other ports are terminated
blocking capacitor
design frequency
...
On Thu, Nov 24, 2022 at 07:25 PM, Jim Lux wrote:
be careful measuring the ports of RF devices with a ohmmeter
You could measure the port resistance of the VNA with a VNA - oops, catch 22 :)
Martin
Ho-Ro