LP2480zx Dreamcolor calibration.

[jona_m]

Hi,

we recently bought a HP Dreamcolor LP2480 monitor as well as the  HP Advanced Profiling Solution designed for this device in order to view HD broadcast signals with the help of an additional converter. This topic has been described in a whitepaper by greg staten. http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01695201/c01695201.pdf

The first impression of the monitor is that it produces great black levels and and seems to reach good brightness values.

Sadly, the monitor has a noticeable overall green tint in all color space presets although the monitor is set to factory defaults. My question is if someone else has noticed a similar behavior or might it just be that we got a "bad" monitor.

As I understand it, it should normally now be possible to use the advanced profiling solution APS and the supplied software in order to compensate for such variations. But every time we try to calibrate the monitor with the APS we get a completely green image. We tried that with a bunch of different values for the RGB primaries and the white point, but the result always has a heavy green or cyan tint. We also tried to calibrate several other monitors on different workstations (MacOSX & Windows) with the APS while using the calibration option for standard monitors instead of the special option for the LP2480. All monitors we tried to calibrate with the APS got a heavy green tint.

Are we doing something completely wrong here or might it be that our APS is defect.

If someone has experience with the monitor or noticed similar behaviors it would be cool if you could let us now. 

Jona 

[PC_Tester]

Try this link

 http://support.hp.com/us-en/document/bph05236

If you're running Windows 7, also try this...

Start, Control Panel, (Classic View), Color Management, Advanced Tab, Calibrate Display…

[cablet02]

Jona_m,

Hello.  I see in your post you have been able to calibrate your dreamcolor (not with great results but that's beside my point for a moment).  I have been trying to calibrate my Dreamcolor for months but can't figure out how.  I have the correct HP Advanced Profiling solution and have are also using the Dreamcolor for video using the recommended Gefen converter.  Running the APS software gives me no options of any kind to calibrate the Dreamcolor. It will let me profile a connected computer but that is not what I need. The factory default Rec. 709 color is way off now and it really needs to be calibrated but I can't find any way to do it.

Are you actually calibrating the display or are you profiling a computer for the display?  I'm about to recommend to our studio (a fairly big one as well) that we avoid Dreamcolors because calibrating is an unrealistic task for this product. I've called support 3 times and they tell me to read the manual (scripted lines for the india support crew). 

Anyway, thanks for any info you could provide on calibrating these.

-cable

[jona_m]

Hi,

first of all I have to say that we managed to calibrate the dreamcolor monitor correctly a few days ago. The problem was that we got a defective APS, which constantly gave us bad results. After contacting the HP support a few times they were kind enough to send us a new one. After calibrating the monitor with the new APS the display looks much better in terms of color compared to the factory calibration.

One thing I noticed during my attempts is that the special option to calibrate the LP2480 in the APS software only occurs if you have the monitor connected to the computer via usb. (The usb port near the power switch on the back of the monitor). Probably this might be the reason why you have no access to the LP2480 option.

If the software detects your display correctly you are able to change many of the important attributes like the RGB primaries and the whitepoint.

If you do your calibration this way you are actually performing a hardware calibration, which means that the resulting lut will be saved into the monitor. With this in place you can chose your previously created profile through the onscreen display and use it to view your hdsdi source via the converter.

Jona 

[danibam]

I have the Dreamcolor connected through the USB. I even have my keyboard and mouse cionnected throuh the Dreamcolor as a HUB ... and the X-RITE probe as well

Nevertheless the APS software tells me "Please verify that a USB cable is connected ... and try again"

I am using WIndows 7, the Dreamcolor connected through HDMI from an NVIDIA GeForce GTX 285

and running the latest APS version 1.1.0 

How/Where can I get support?

Daniel Perez

[pinhofer]

---

@danibam wrote:

Nevertheless the APS software tells me "Please verify that a USB cable is connected ... and try again"

---

I had this same problem, after having successfully used the probe a day earlier.

The solution that worked for me was to use the Reset to Factory Settings command on the panel. Once I did this the computer was able to see the USB cable.

- patrick

[JD_Cineaste]

Hi there,

I have the DreamColor and am running it on the Mac. Aside from problems setting up the black levels (it's too dark) I'm now trying to calibrate it with the APS puck and the APS software (version 1.1.0) keeps crashing. It seems there's no place to get support on what is essentially a $3000 system. Can someone please help to solve this problem?

Many thanks

Jean

[Hardi]

Hi Jean,

I have the same problem:

The APSs software (HP DreamColor Advanced Monitor Profiling Solution) V 1.1.0 for MAC always says that it cannot find the LP2480zx display via USB.

The usb keyboard and puck is attached to the LP2480zx (while I'm typing now), and the display is connected to my MacPro Model 5,1 (mac os 10.6.4).

I also tried the "reset to factory defaults" hint from Patrick, but without any change.

Can someone please help to solve this problem?

Thank you in advance,

Hardi

[Big_Dave]

Look over the Spyder products for calbrating your monitor.  I use an older SpyderTV product.

[aniemann]

Hi Jean and Hardi - OK, this is weird - exactly the same problem for me:

-calibrated OK a couple of weeks ago (using HP's APS) 

-now it won't calibrate as no USB connection (Display Assistant refuses to reconnect it - says USB disconnected)

       -yet the mouse runs off the USB on the monitor!

-tried the factory reset but that didn't fix it unfortunately

-I'm on Win7 64bit

For a while I was thinking maybe an update patch from MS had done something, but then Hardi is on a Mac, so won't be that. 

Andy