Panasonic AJ-HPX2000 Operating Instructions Manual page 103

When making the white shading correction, make the
adjustment while observing the R, G, and B waveforms in
the horizontal and vertical directions with the waveform
monitor.
This now completes the white shading adjustments.
The adjustment values are now stored in the non-volatile
memory so that even when the unit's power is turned off,
there will be no further need to perform the white shading
adjustment.
103
Preparation ：Mounting the lens and Performing the Flange Back and White Shading Adjustments