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Spectro not reading properly

Spectro not reading properly

2007-02-18 by tech4x5

I am using PrintFix Pro v2.0.
My program and spectro have been working fine up until this am.  
Actually made a good set of profiles yesterday.  Today when I use the 
spectro to measure a target and look at the meausred values, the colors 
are way off.  I have white balanced before I did this as usual.  I look 
at my prior measured targets and they look fine, but when I try to make 
a new one today, even using the same paper as I used yesterday, colors 
are way off.  Is there a setting I perhaps have wrong?  Is there a way 
to determine if it is reading properly?  Thanks.

Matthew Kraus

Re: [colorvision_group] Spectro not reading properly

2007-02-18 by David Miller

>I am using PrintFix Pro v2.0.
>My program and spectro have been working fine up until this am.
>Actually made a good set of profiles yesterday. Today when I use the
>spectro to measure a target and look at the meausred values, the colors
>are way off. I have white balanced before I did this as usual. I look
>at my prior measured targets and they look fine, but when I try to make
>a new one today, even using the same paper as I used yesterday, colors
>are way off. Is there a setting I perhaps have wrong? Is there a way
>to determine if it is reading properly? Thanks.
>

Hi Matthew,

Make sure it's calibrated properly? Just go into the Tools menu;
do a Calibrate; and then use Measure to take some spot measurements on
a few things, maybe try the paper white from something you've measured
before and compare the Lab values.

When you calibrate the spectro, make sure you've got it sitting directly
in the calibration base, and that the nose of the spectro is flush with the
white cal tile. (And of course, this has to be on the round white tile in
the calibration base, not on the paper you're measuring).

Other than the spectro calibration, there's nothing else that can be off, as
long as the spectro is functioning properly and it's plugged into a powered
USB port. (It does need power to function properly, so grasping at a few
straws that are still possible: if you have it plugged into a powered hub,
make sure that your hub is actually still getting power, and that it's DC
power adapter didn't possibly get pulled out slightly). Also, double-check
the spectro cable. Unplug it from both ends, then re-insert it all the way
into the spectro and then plug it back in on the other side.

After going through all this, what kind of paper white meausurements are
you getting?


Best regards,

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

Re: [colorvision_group] Spectro not reading properly

2007-02-18 by CorrPro96@aol.com


In a message dated 2/18/07 10:53:04 AM, mkraus1044@... writes:


I am using PrintFix Pro v2.0.
My program and spectro have been working fine up until this am.
Actually made a good set of profiles yesterday. Today when I use the
spectro to measure a target and look at the meausred values, the colors
are way off. I have white balanced before I did this as usual. I look
at my prior measured targets and they look fine, but when I try to make
a new one today, even using the same paper as I used yesterday, colors
are way off. Is there a setting I perhaps have wrong? Is there a way
to determine if it is reading properly? Thanks.

Matthew Kraus



How was your nozzle check? Print the preliminary test charts in the software.

Richard (Brooklyn)

Re: Spectro not reading properly

2007-02-18 by tech4x5

Thanks Everyone.  I've got it working now.  Rebooting, restarting the 
program, jiggling the plug, using a different USB port...don't know 
which did it, but it's working fine now.

--- In colorvision_group@yahoogroups.com, David Miller <dm2363@...> 
wrote:
>
> >I am using PrintFix Pro v2.0.
> >My program and spectro have been working fine up until this am.
> >Actually made a good set of profiles yesterday. Today when I use 
the
> >spectro to measure a target and look at the meausred values, the 
colors
> >are way off. I have white balanced before I did this as usual. I 
look
> >at my prior measured targets and they look fine, but when I try to 
make
> >a new one today, even using the same paper as I used yesterday, 
colors
> >are way off. Is there a setting I perhaps have wrong? Is there a 
way
> >to determine if it is reading properly? Thanks.
> >
> 
> Hi Matthew,
> 
> Make sure it's calibrated properly? Just go into the Tools menu;
> do a Calibrate; and then use Measure to take some spot measurements 
on
> a few things, maybe try the paper white from something you've 
measured
> before and compare the Lab values.
> 
> When you calibrate the spectro, make sure you've got it sitting 
directly
> in the calibration base, and that the nose of the spectro is flush 
with the
> white cal tile. (And of course, this has to be on the round white 
tile in
> the calibration base, not on the paper you're measuring).
> 
> Other than the spectro calibration, there's nothing else that can 
be off, as
> long as the spectro is functioning properly and it's plugged into a 
powered
> USB port. (It does need power to function properly, so grasping at 
a few
> straws that are still possible: if you have it plugged into a 
powered hub,
> make sure that your hub is actually still getting power, and that 
it's DC
> power adapter didn't possibly get pulled out slightly). Also, 
double-check
> the spectro cable. Unplug it from both ends, then re-insert it all 
the way
> into the spectro and then plug it back in on the other side.
> 
> After going through all this, what kind of paper white 
meausurements are
Show quoted textHide quoted text
> you getting?
> 
> 
> Best regards,
> 
> -- 
> David Miller
> Senior Software Developer, Digital Color Solutions
> ColorVision
>

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