FaroArm® Quantum
August 2017
117
Chapter 5: Accuracy
The specifications (SPAT and EUni) of your Quantum are listed on the label
between the battery pack slots.
NOTE: For optimum performance, correctly mounting and operating the
Quantum is very important.
For more information, see “Quantum
Performance Verification Checklist” on page 132.
Loss of a Degree of Freedom
In a working volume of the Quantum there can be a loss of a degree of freedom
(natural rotation of each joint). With this loss, temporary bending occurs on the
transfer tubes of the Quantum causing a movement of the probe position that
cannot be recorded by the Quantum’s encoder system. Measurement results taken
in these positions are not accurate. This condition is never encountered in the
compensation of the Quantum. Common areas of measurement where this loss
occurs are:
• when an encoder has reached a hard end stop,
• directly above the Quantum, or
• in close to the base of the Quantum.
The Quantum should always feel fluid in its movement. If excessive force is
needed to move to a measuring location, a degree of freedom has probably been
lost. The following figures illustrate some of the possible positions of the
Quantum where a degree of freedom has been lost.
Figure 5-1 Quantum Accuracy Label
08m80e00_FaroArm_Quantum.book Page 117 Tuesday, August 22, 2017 11:03 AM
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