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How to tell if PFP is acting up or is now working properly?

How to tell if PFP is acting up or is now working properly?

2006-08-16 by ed_limmy

HI David,
My eyeone display 2 has a diagnostic program that i can run to check if 
it is ok.

Currently there's nothing for that in PFP right? What if one of the 
LED's have blown or something like that? It'll probably take up a lot 
of ink and paper and time/effort to confirm that if there is nothing to 
check the 'health' of the unit. Will the white calibration work as a 
diagnostic tool?

I've been reading some other color forums and have found out that just 
because someone has spent a lot of money on their gretag or xrite it 
doesn't automatically solve or give them good color management. One guy 
even had a brand new gretag 1photo become faulty.

Ed.

Re: [colorvision_group] How to tell if PFP is acting up or is now working properly?

2006-08-16 by David Miller

>HI David,
>My eyeone display 2 has a diagnostic program that i can run to check if
>it is ok.
>
>Currently there's nothing for that in PFP right? What if one of the
>LED's have blown or something like that? It'll probably take up a lot
>of ink and paper and time/effort to confirm that if there is nothing to
>check the 'health' of the unit. Will the white calibration work as a
>diagnostic tool?

I would expect so. If there's something wrong with the spectro, it's
not going to calibrate properly; and you'd get measurements out of it
that would obviously be "wrong" in a big way.

So: I wouldn't be concerned about this. Your diagnostic is:

- The spectro communicates properly with the software. (Go into PFP's
preferences, make sure it shows up and that you see the serial number,
etc). That tells you that it's "alive".

- Calibrate it on white. (Either during the UI sequence, or using the
command in the Tools menu). It should calibrate without a complaint.

- You can use Tools:Measure to measure a few colors, the white calibration
tile, etc. It's either going to work (the color you see in the meausured
patch looks like what you're measuring) or not. There shouldn't be any
"shades" of failure, subtle things wrong with the colors, etc. If they
look right to you, then the spectro is healthy.

Simplicity is always a good thing...:_0


Best regards,

-- 
David Miller
Senior Software Developer, Digital Color Solutions
ColorVision

Re: [colorvision_group] How to tell if PFP is acting up or is now working properly?

2006-08-16 by CDTobie@aol.com


In a message dated 8/15/06 9:26:27 PM, ed_limmy@... writes:


My eyeone display 2 has a diagnostic program that i can run to check if
it is ok.

Its something of an open question as to what a monitor calibrator can check, by itself, that will prove its working properly; there's some circular logic there... but clearly it makes you feel better to have that feature in place.

Currently there's nothing for that in PFP right? What if one of the
LED's have blown or something like that?

Then it can't read white, and see it as white. Save a white tile measurement from your device, and if you have questions about the LEDs being blown or disconnected at a later date, remeasure the white tile again in the spot measurement tool, and see if the Lab value is similar.

 It'll probably take up a lot
of ink and paper and time/effort to confirm that if there is nothing to
check the 'health' of the unit.

White does't seem very colorful to us, but it includes all colors, from the spectro's point of view. So a single white measurement is all you need to check all the LEDs.

 Will the white calibration work as a
diagnostic tool?

No, but the white tile will.

I've been reading some other color forums and have found out that just
because someone has spent a lot of money on their gretag or xrite it
doesn't automatically solve or give them good color management. One guy
even had a brand new gretag 1photo become faulty.

The spectro in PFP is a more "solid state" device, and more repeatable, then other forms of spectros. Those are among its strengths. But its certainly possible for one to have hardware issues. Color management is a large and complex area. Users tend to assume that buying one or another product will solve all their problems instantly, and are sometimes disappointed to find that its not always that simple.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@...
www.colorvision.com

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