That's right, having Avia is a good start for the basic calibrations. You also need the other test patterns for Grayscales. You can fine tune your Z9000 with the service menu's RGB-contrast RGB-brightness adjustments.
Here's a quote from the H30 tread to get you started.
"Some tuning tips for all displays that have advance RGB-adjustments for grayscale.
After making changes take a look at the Avia Needle Pulse pattern to see that there's no color tints in the Gray to White steps in the upper part of the pattern. The Pluge pattern also in Avia called Black Bars+ Log Steps. It's found under Video Test Patterns/Gray Scale & Levels/Black & White levels -
If it's not dead on grays to white make final changes with the user advanced adjustments.
Example - you see red/pink tint in the light gray/white.
If you see green in the dark grays/black
You see how it works, color in the light grays you use the RGB-contrasts
Color in the dark grays you use the RGB-brightness to fix.
Here's a couple of grayscale patterns -
Make the shades of gray look gray with no color tints.