DMTA-10040-01EN, Rev. E, February 2018
Control Functions 89
TOP LEFT
Places the null position near the top left, at 20 % horizontal and 80 % vertical.
CUSTOM
Places the null position at a user-determined point, between 0 % and 100 %
horizontal and between 0 % and 100 % vertical. Press H POS (horizontal
position) or V POS (vertical position) to create a custom null position.
If the horizontal or vertical position is modified after a preset null position is chosen,
the POSITION selection reverts to CUSTOM.
H POS
Changes the null position in the horizontal axis. To change the horizontal
position, press the DISP menu key ( ), followed by the D key, and then rotate
the knob to the desired setting.
V POS
Changes the null position in the vertical axis. To change the vertical position,
press the DISP menu key ( ), followed by the E key, and then rotate the knob
to the desired setting.
D ERASE (display erase)
Erases the eddy current display at user-determined time intervals. The available
range for D ERASE is 0.1 s to 60 s, in 0.1 s intervals.
To activate display erase, press the DISP menu key ( ), followed by the B key.
With DERASE highlighted, rotate the knob to adjust to the desired value.
The display erase function is not available if variable persistence (PERSIST) is
activated.
PERSIST (variable persistence)
Enables automatic screen erase. You can set the display on an impedance plane
(not sweep) so that the signal traces on the screen will be erased after a
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