HDLink+Viewsonic VP2650wb in PAL

[Luke Maslen]

Hi Kurt,

I’m not familiar with this monitor and haven’t heard any reports about it related to HDLink. I do know some monitor do not handle PAL frame rates natively and HDLink attempts to help by providing pulldown processing to a frequency the monitor does support. If that doesn’t work, then you can try the EDID override settings which are documented at step 3 in the support note HDLink and EDID Manual Override. The most likely setting to work is named Force 5:2 Interlaced Display.

This information is only relevant to HDLink. The newer HDLink Pro does not have the EDID override settings as it uses a different hardware method to detect display capabilities.

Please let me know how you go.

Regards,

Luke Maslen
Blackmagic Design

[Kurt Hennrich]

thank you luke for your tips.
but it doesnt seem to be a problem of PAL frame rates only:
– according to specs the monitor should be able to handle @50 @25 framerates
– the problem is the same with the old HDLink and the new HDLinkPro

could it be that the monitor reports YUV capability to HDLink while it cant handle in PAL?
or does HDLink/Pro allways send RGB images to the monitor?

btw. the new viewsonic is a real chief for the price. see the specs here (nativ HD, 110% ntsc gamut, fast):
https://ap.viewsonic.com/me/products/productspecs.php?id=347
maybe this specs can tell you something about the problem.

regards,
kurt

Kurt Hennrich
1z1screenworks
1z1 tools for FCP : https://www.1z1.at/plugins/

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[Kurt Hennrich]

hi luke,
I now did a test with the HDLink running EDID overriding and it works, thank you!
at least I can see the correct image in PAL, allthough movements are no more that smooth.
but the HDLinkPro using another methode to detect the monitor,
doesnt handle the situation correctly by itself.
is there another method ? I would need the Pro’s 3D LUT capability.

thank you,
kurt

Kurt Hennrich
1z1screenworks
1z1 tools for FCP : https://www.1z1.at/plugins/

[Luke Maslen]

Hi Kurt,

Thank you for letting me know that the EDID override settings help with the HDLink. That is good news.

I’m surprised that the HDLink Pro is not automatically working with that model of monitor so we’ll buy that model and test it. I don’t believe that adjusting the 3D LUTs would help so we’ll need to obtain this monitor.

All DVI-based monitors expect RGB video and that is what HDLink and HDLink Pro would send to the Viewsonic VP2650wb monitor. I think that the correct colorspace is being sent to the monitor otherwise you would not have been able to make HDLink work with it using the EDID override settings. We’ll check it out and get back to you. Hopefully we can support this monitor with a simple HDLink software update. It will take a few days to obtain the monitor, verify your observations and then give it to the engineers for a solution. It will then take a little longer to release a solution as the engineers are flat out on allocated tasks but I’ll try to squeeze in this item as soon as possible.

Regards,

Luke Maslen
Blackmagic Design

[Kurt Hennrich]

thank you Luke for investigating the issues!
I am shure the Viewsonic VP2650w with HDLink is a phänomenal cheap/great monitoring solution for editing, at least in NTSC, maybe with new software support even in PAL.. (thought not good enough for very color critical work)

looking forward to hear from you,
kurt

Kurt Hennrich
1z1screenworks
1z1 tools for FCP : https://www.1z1.at/plugins/

[Luke Maslen]

Hi Kurt,

It’s taking a few days for the monitor to arrive but it has been ordered and we will test it.

Regards,

Luke Maslen
Blackmagic Design

[Luke Maslen]

Hi Kurt,

I’ve received and tested the monitor and replicated your observations. I shall now pass it over to the engineers to analyse.

Regards,

Luke Maslen
Blackmagic Design