HEIDENHAIN IK 5394-3D - Manual (Page 455)

6 - 5
Quadra-Chek ® 5000
The relative brightness of the pattern can be
changed to facilitate the evaluation. Click
the Persistence buuton to display the Persis-
tence Adjustment data field.
The persistence of the pattern image can be
changed from 1 to 1000. Higher numbers result in brighter pattern images.
The combined-phase pattern will form a circle when the encoder output phase
amplitudes are equal. Generally when the pattern displayed is not circular, the
reader head will need to be realigned, and the encoder recalibrated from the
beginning.
6 When the pattern is circular, repeat the process described in steps 1 through
5 to calibrate any remaining analog encoders.
A Persistence of 100 produces
a dim display
A Persistence of 1000 produces
a bright display