As far as I am aware, the port extension feature only adds pure phase. You enter a delay parameter, or a physical length + velocity factor. I don't recall ever seeing any option to dial in any other parameters (e.g., loss), but that may be due to my rarely using port extensions, and then only to shift the reference plane by tiny amounts.
--Tom
--
Prof. Thomas H. Lee
Allen Ctr., Rm. 205
350 Jane Stanford Way
Stanford University
Stanford, CA 94305-4070
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On 5/27/2022 18:12, Dave McGuire wrote:
On 5/27/22 19:50, Karin Johnson wrote:
This is probably related to the storage of the cal correction factors in the memory of the 8753C.? Is it via floating point numbers, or integer numbers?
? I don't know about the 8753 in particular, but for the 8510, for example, the calibration correction factors are floating point numbers that are the coefficients for the third-order polynomial that describes the curve (C or L) in the frequency domain for the calibration standard in question.? I'd be very surprised if the 8753 did it any differently.
? Dave Kirkby should be able to chime in on this with more information.
??????????? -Dave
