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4.6 Common Measurement Errors
The most common sources of optical power measurement errors are listed
in Table 5 below.
Type of Error What should be done?
Radiometry Check that all of the light is actually hitting the
detector.
Ambient Light Check that any ambient light was ZERO’ed
before the measurement was made.
Wavelength Calibration Check that the proper wavelength has been set.
Detector Saturation Check that the optical power density remains
below the detector’s saturation threshold.
Meter Configuration Check that the 1830-C was powered-up with the
calibration module properly connected.
Check that the optical attenuator mode (ATTN
annunciator) is properly enabled/disabled.
Table 5 — Common Measurement Errors
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