"Standards are /good things/...that's why there are so /many/ of them!"
John
at radio station VE7AOV
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On 2022-12-07 07:52, Jim Lux wrote:
On 12/7/22 7:31 AM, Donald S Brant Jr wrote:
On Wed, Dec? 7, 2022 at 02:03 AM, Luc ON7DQ wrote:
that should of course be "at the Reflection socket" (or CH0)
I fail to understand why the designers of all of these VNAs labeled the ports CH0 and CH1, when every other VNA I have used over the past 45+ years has had Port 1 and Port 2.
This just adds to the confusion, especially when trying to explain S-parameters.? S21/S12 makes more sense when the ports are 1 and 2, much less so with 0 and 1.
73, Don N2VGU
zero based indexing.? The first person to build one happened to choose CH0 and CH1, and then it stuck.
Matlab and Fortran (and BASIC) follow the mathematician convention of 1 based.
C started zero based because of the array/pointer duality and the desire to keep the compiler simple.
Component numbering usually starts at 1, but often has a hundreds or thousands to indicate which board or assembly (that is, C302 is the second capacitor labeled on board #3)
Yeah - it's kind of like emacs vs vi; or case sensitive file and directory names.? Someone picks something, and the rest follow, or not.
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