Hello, Dr. David.
You can set the electrical delay with "DISPLAY, SCALE , ELECTRICALDELAY".
Yes, commercial calibrations are not required to be as short as possible, they can provide accurate correction data. But at a limited cost, it is easier for manufacturing to be as short and accurate as possible than to provide more accurate correction data. At the same time for HAMs with no VNA experience, it is easier to provide calibrations that no longer require additional data to be entered, although this is not precise enough, but the measurement below 1GHz is sufficient.
BTW，please forgive me for my poor English expression.
Thank you！
hugen
gen111.taobao.com
