Perfect Timing! I'm finishing up details of my Master's Thesis and
using Excel Curve fitting functions for some plotted simulation data
concerning link margin vs elevation.
This Pitfall sub-thread was perfectly timed to help me avoid showing
useless data without enough significant figures.
I have been using the free program CurveExpert for years for plotting
and calculating calibration data. That is, for deriving the cal equation
from test data.
http://www.curveexpert.net/
It lets you choose linear or quadratic and if quadratic you can pick how
many terms you want. It lets you
> To follow up on Bob's comment. If you send the raw analog sensor
data...
> Change calibration values if found to be wrong after launch...
We did on PCSAT!
Caution to Satellite Builders: Be careful when using an EXCEL TREND LINE
equation for doing Engineering Unit conversion back to original u
