GE XL VU, Operating Manual

Page: 125 / 133

XL Vu™ VideoProbe
®
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Appendix
D. Verifying Measurement Tips
Verify measurement tips each time they are used to ensure that no
mechanical damage has degraded their accuracy.
Every XL Vu system equipped with measurement tips is shipped with
a measurement verification block. This tool allows for verifying the
accuracy of measurement tips. It contains optical measurement targets
whose accuracy is traceable to the United States National Institute of
Standards and Technology (NIST) measurement standards.
These are the part numbers for the verification blocks used with the XL
Vu system:
 VER2400B For 3.9mm systems
 VER2600C For 6.1mm systems
 XLG3TM84VER For 8.4mm systems
Each measurement verification block comes with a calibration schedule
and a Certificate of Calibration (C of C), which notes the calibration date
and due date.
Each block has two or more chambers. Each chamber contains two
calibrated test targets: 0.1 inch and 1 mm.
To Verify a Measurement Tip:
1. Attach the shadow or stereo tip securely.
2. Insert the tip into the appropriate test chamber.
3. Measure the test target using the appropriate metric (inches or
millimeters)
4. Evaluate results.
An experienced user can achieve a measurement of 0.100 ± 0.005
inches (1.00 ± 0.05 mm). If the measurement results do not fall within
these limits, see Troubleshooting Measurement.