View Full Version : Interpretting xyY coords for Samsung DLP


Tardeaux
01-01-07, 07:04 PM
Hello all,

I'm attempting to tweak my Samsung HL-S series DLP with a Spyder2 and HCFR but seem to have run into a hitch. All the references I can find give the Y value in a xx.xxxx format, but my TV's service menu takes a 3 digit whole number. With x and y this wasn't a problem, as it was just the digits after the decimal but this idea doesn't seem like it'd apply for this value.

The Y values read by my spider2 are as follows:
R - 49.223
G - 118.102
B - 34.050
Y - 203.826
C - 180.735
M - 64.042
W - 318.103

The default values in my CCA menu:
R - 103
G - 249
B - 72
Y - 340
C - 134
M - N/A
W - 898

Michael TLV
01-01-07, 07:58 PM
Greetings

Aside from the Spyder probe being the wrong instrument for working in this area. You need a spectrometer to do it right ...

Regards

Tardeaux
01-01-07, 09:11 PM
I'm not all that worried about doing it "right" at the moment. Took me 6 months to convince he mrs. to let me spend the 2k to buy the set/stand, if i mentiond slipping someone $400 to make it lok better or spending similar on gadgets to DIY, I'd be in no state to watch any TV that wasn't mounted in a hospital room.

What I do have is my Spyder2 Pro which I have for workstation monitors (i work in IT), a guide to tune CCA given basic measures, a sunburn from the factory color settings, and a whole lot of patience.

If this doesn't work out, I'll keep tinkering and if all else fails then maybe in another 6 months I'll be able to sneak an isf tech in here while she's at work ;)

But in the meantime, I got these lumiosity readings i need to input...

(No disrespect intended, I'm in absolute awe over some of the things i've read here in the past week or so. So much so that I've toyed with the idea of possibilty pursuing it further sometime in the near future. For now, I just don't want my TV looking like someone's been drawing on it as it currently does when CCA is enabled)

Zygmunt
01-02-07, 12:12 AM
Hello all,
The Y values read by my spider2 are as follows:
R - 49.223
G - 118.102
B - 34.050
Y - 203.826
C - 180.735
M - 64.042
W - 318.103

Are your values in ft-lamberts or nits?

Tardeaux
01-02-07, 12:57 AM
Are your values in ft-lamberts or nits?

I'm fairly positive they're nits :)

donb1948
01-02-07, 11:16 AM
On my HL-R, the Y-values (luminance) of the internal color patterns needed to be input in the CCA in units of cd/m^^2 (aka, nits). IIRC, I measured Y in ft-Lamberts and converted by multiplying by 3.426. The numbers were then more in line with the values that were initially present. YMMV and I take no responsibility if you screw up...