On 23 December 2012 18:43, David McQuate <mcquate@...> wrote:
On "missing parts": some opens(mostly early, and I'm specifically
thinking of APC 3.5 connectors) consisted of a body having no center
conductor attached, plus an insertable center conductor on a plastic
rod. Without the inserted center conductor, the characteristics of the
"open" would not match the values assumed in the calibration calculations.
Was sort of like this
though for 3.5 mm, not N as in this diagram?
My own 3.5 mm kit does not have anything like this - the standards are
self contained - no extra bits needed, and nowhere to fit anything.
On "open / short combo": Neither standard has much length, so the two
can easily be packaged into one assembly, strictly for convenience (less
likely to be misplaced because it is larger). There's no coupling
whatsoever between the two ends.
True - they are convenient. There are 3 types of these
1) With just the open and short.
2) With open, short and load
3) With open, short, load and thru.
Eiether way, one needs to have the data on the bits.
If you read the 8753 manual, you will find the calibration kit it is
deisgned to work with is the HP 85032B (as in the photo I showed).
Any other cal kit has to be entered as a user calibration.
Dave
