Hey Chris,
Please attach the measurement data and I can see what is going on. Please include spectral values as well as the normal lab values too. An MXF file format is fine (this has spectral data).
Most likely there is some extra measurement somewhere . . . like it’s measure a combo of the last columns + paper white . . .
Also PPEv2 does not work with 31x9. It was on my list to update that in PPEv2 before getting canned . . . so most likely never will work with 31x9 . . .
Warmest,
-Walker
toggle quoted message
Show quoted text
On Dec 9, 2024, at 12:02?PM, Chris Jack via groups.io <itsmrjack@...> wrote:
I am getting a sawtooth/jagged line from my measurements of a test chart, when taking the measurements in scan mode, but not in spot mode.
Using an ES-2000 spectro, measuring Piezography test charts in i1Profiler 3.8.4 on Mac OS Ventura 13.5, M1 Max MBP.
I have posted over on the Piezo Pro forum where I'm a member, but this is possibly more related to the spectro or i1Profiler, so I'm assuming relevance to this forum.
?
I get results as expected when taking measurements in spot mode, as so - this is a spot measurement of a 51-step test chart printed on paper using a curve that I have previously linearised and ink limited for that paper to as ‘perfect’ as I could get it, so it is a good reference:
<IMG_2365.jpg>
?
But when I take measurements of the exact same test chart print using scan mode, it looks as so:
<IMG_2364.jpg>
?
I have left off any smoothing at all just to show the full extent of the difference.
I have checked the sample ID, position and sample name of each measurement in the saved measurements .txt files and can see that i1Profiler looks to be compiling the measurements in the proper order just fine.
Has anyone experienced sawtooth measurements with an i1Pro 2 or ES-2000?
Is it dodgy hardware? Or is it firmware related? If it is to do with it being an ES-2000 then how come spot measuring seems fine?
I get the same outcome whether measuring a 51 step chart or a 129 step chart.
I have tried with the 21x16 and 31x9 charts but - another weirdness - I cannot seem to get past measuring the first line of those charts, I just get told by i1Profiler of a measurement error and that I need to try slower (I am being very slow and precise). Maybe that’s something to do with the .pwxf files for those charts though?!
Any thoughts appreciated.
?
Cheers,
Chris.
--
