It looks like this when I start from factory defaults:
1: I adjust Contrast and Brightness with the AVS clipping patterns.
2: I use the interactive display adjustments of dispcal to set up the 2p white balance for D65 chromaticity and the desired peak luminance (if it's not in that range already).
3a: I take a full set of readings (which is about 1 minute - the i1d3 reads with approximately 1 patch/sec speed in ArgyllCMS CRT mode).
3b: Now I see the Luma, Chroma and Huye errors on every color patches (signed with +/-), so I adjust the color controls accordingly. (It about 1 minute again to make some changes in the OSD, 2 at max).
3c: I take a full set of readings again and again until the dE2000 values are low enough
With these reports, I see how the color gradients look like, so I can make slightly smarter judgments about the necessary adjustments than I would guess from measuring the primaries and secondaries at one fixed level only.
And then I have these extra mixed colors to make sure I didn't make a mistake with the adjustments (I focus on the red gradient, mainly at 100% when I try to guess better settings for the Red CMS settings, so it's good to have a control).
It's very useful with these Panasonics to read everything at once because everything interacts with everything (changes in the settings of one primary color may change another color as well + the saturation controls can also affect luminance and vice versa, as well as huye alters chroma and cive versa...) And it's just a G30, the VT30 has much more controls, so it's very easy to get lot in the wilds if you try to do it from patch-to-patch instead of taking a full set of measurements.
Yesterday I reseted everything to default and started all over to see how far I get with exactly 10 iteration steps: http://www.mediafire.com/download.php?f4xxdgfjiywrxtu (but the last 3 was about the same).
I didn't try to use this method for a VT30 or a >D550 calibration with all those (partially redundant) controls. I guess that will require more iteration steps. But may be this will finally work for the VT30.