Starrett 2000-24 Altissimo Electronic Height Gage - Manual (Page 6)

Probe Calibration
Starrett Altissimo Operation Manual Page 5 CAT 2000-24
Power On - Turn the Power on, if using the Battery for power place
the Battery Power On/Off switch to the 1 position or plug the charger
in and the unit will power regardless of the Battery Power On/Off
Switch position.
The display comes on in Height Mode and prompts for Point 1 (Pt 1).
(See Figure 8)
Note: The Altissimo can be used to measure heights even if the Probe
is not calibrated. See Measuring Modes – Height Section.
Figure 8
Probe Diameter Calibration – If the Probe Symbol is Flashing in
the upper left corner of the Display, it will be necessary to Calibrate the Probe Diameter. (See Figure 9) The Probe
Diameter must be recalibrated when the Altissimo is first received and periodically thereafter, especially when
measuring conditions change.
Press the SETUP Key and the Probe Calibration Mode Icon will light. The display will ask for Point 1 (Cal 1).
Position the Calibration Block under the Probe. Using the Coarse Adjuster Knob move the probe down onto the
Upper Measuring Surface until the tool beeps. Move the Probe clear of the surface. The display will ask for Point 2
(Cal 2). Similarly measure the Lower Measuring Surface of the Calibration Block. Measure the Upper and Lower
Measuring Surface a second time.
Note: In order to calculate the diameter of the probe the first and second measurements must be taken in opposite
directions, the third and fourth measurements must also be taken in opposite directions.
Accept the Calibration - After measuring each surface twice, the Altissimo will display a number which is the
Deviation of the Probe Calibration. The deviation is the repeatability of the points taken during Probe Calibration.
This provides a measure of the quality of the measurements. If the Deviation is sufficiently low, under .0002”
(.004mm), then Press the F5 Function Key ( ) to accept the value. (See Figure 10) The Probe Calibration Icon
stops Flashing and the top and bottom "Hit" bars are Flashing indicating measurements can be made in either
direction.
Note: If the Deviation is high, over .0002” (.004 mm), then check the tightness of the Probe Arm and Probe. Check
the cleanliness of the Probe Tip and Calibration Block. Make sure that the Probe and Belt Locks are fully unlocked.
Then recalibrate the Probe.
Important: The Altissimo will store the Calibrated Probe Diameter even after it is turned off. The Probe must be
recalibrated each time it is changed or repositioned. See Setup Section for instructions on other Probe Diameter
Calibration Options.