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XM-60 specifications

Between 0 and 4 metres

Linear
Measurement accuracy±0.5 ppm (with environmental compensation)
Resolution1 nm

Measurement range

0 m to 4 m
Linear measurement icon

Angular (pitch/yaw)

Accuracy±0.004A ±(0.5 μrad +0.11M μrad)
(A = displayed error reading)
(M = measured distance in metres)
Resolution0.03 μrad
Measurement range±500 µrad
Angular measurement icon
Straightness
Measurement accuracyTypical range: ±0.01A ±1 μm
Extended range: ±0.01A ±1.5 μm
(A = displayed error reading)
Resolution 0.25 μm
Measurement rangeTypical range: ±50 µm radius
Extended range: ±250 µm radius
Straightness measurement icon
Roll
Accuracy±0.01A ±6.3 μrad
(A = displayed error reading)
Resolution0.12 μrad
Measurement range±500 µrad
Roll measurement icon
Accuracy values are reported to a statistical confidence of 95% (k=2). They do not include the errors associated with the normalisation of the readings to a material temperature of 20 °C.

Between 4 and 6 metres

  • The performance specification for linear, angular and straightness measurement will be the same between 4 m and 6 m as it is between 0 m and 4 m.
  • The performance specification for roll measurement between 4 m and 6 m range will be:
Roll
Accuracy±0.01A ±10.0 μrad
(A = roll error (µrad))
Resolution0.12 μrad
Measurement range±500 µrad
Accuracy values are reported to a statistical confidence of 95% (k=2). They do not include the errors associated with the normalisation of the readings to a material temperature of 20 °C. Measurement beyond 4 m range requires good alignment between the XM launch and receiver. If misalignment causes received laser signal strength to fall below 4%, CARTO software will inform the user that better alignment is required.

Over 6 metres

  • The performance specification for linear and angular measurement will be the same between 6 m and 8 m as it is between 0 m and 4 m.
  • The performance specification for straightness measurement between 6 m and 8 m is yet to be verified.
  • The performance specification for roll measurement between 6 m and 8 m is yet to be verified.
Accuracy values are reported to a statistical confidence of 95% (k=2). They do not include the errors associated with the normalisation of the readings to a material temperature of 20 °C. Measurement beyond 4 m range requires good alignment between the XM launch and receiver. If misalignment causes received laser signal strength to fall below 4%, CARTO software will inform the user that better alignment is required.