Recalibrating the unit – EXFO FOT-930 Multifunction Loss Tester User Manual
Page 87

Maintenance
Multifunction Loss Tester
79
Recalibrating the Unit
Recalibrating the Unit
EXFO manufacturing and service center calibrations are based on the
ISO/IEC 17025 standard (General Requirements for the Competence of
Testing and Calibration Laboratories). This standard states that calibration
documents must not contain a calibration interval and that the user is
responsible for determining the re-calibration date according to the actual
use of the instrument.
The validity of specifications depends on operating conditions. For
example, the calibration validity period can be longer or shorter depending
on the intensity of use, environmental conditions and unit maintenance, as
well as the specific requirements for your application. All of these elements
must be taken into consideration when determining the appropriate
calibration interval of this particular EXFO unit.
Under normal use, the recommended interval for your FOT-930
Multifunction Loss Tester is: one year.
For newly delivered units, EXFO has determined that the storage of this
product for up to six months between calibration and shipment does not
affect its performance (EXFO Policy PL-03).
To help you with calibration follow-up, EXFO provides a special calibration
label that complies with the ISO/IEC 17025 standard and indicates the unit
calibration date and provides space to indicate the due date. Unless you
have already established a specific calibration interval based on your own
empirical data and requirements, EXFO would recommend that the next
calibration date be established according to the following equation:
Next calibration date = Date of first usage (if less than six months
after the calibration date) + Recommended calibration period (one
year)
To ensure that your unit conforms to the published specifications,
calibration may be carried out at an EXFO Service Center or, depending on
the product, at one of EXFO’s Certified Service Centers. Calibrations at
EXFO are performed using standards traceable to national metrology
institutes.