Stonex R20 – User Manual 13
• The CA is coaxial with the EDM laser axis and perpendicular to the TA.
• The TA is perpendicular to the SA.
• The CA, SA and TA intersect at the instrument center.
The actual non-ideal condition, the instrument and set up will also have various errors.
By carefully setting up the instrument, double-sided observation, automatic compensation and correction, the
impact of errors on measurement can be partially eliminated (refer to Tilt Compensation, Symbols
The symbols and formats used in this Manual have the following meanings:
Terminology, technical notes.
The keys on the instrument's keypad are indicated in [ ].
The contents of the softkey commands displayed on the
display are indicated in【 】.
The contents of the fields displayed in the function area of
the display are indicated in〈 〉.
The name of the current application, menu, or step in the
status bar of the display interface is indicated in{ }.
3.3. Keypad
Keypad Zones:
• Numeric keys (number/letter/symbol keys)
• Fixed functions keys (“0/1/4/7” multifunctional keys)
• Navigation keys (arrow keys)
• ESC key (escape key)
• ENT key (enter key)
• Power key
• Quick functions key (“★” key)