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Maintenance & Calibration
To replace the 9-volt battery, remove the unit from its
protective rubber boot and remove the compartment cover (lo-
cated on back of unit) by sliding the cover away from the unit
in the direction indicated by the arrow on the cover.
Keep all optical ends clean to avoid poor insertion loss read-
ings and also to prevent contamination of the optical ports and
ends. Always replace the protective dust caps onto the optical
ports when not in use.
Repair of the test units beyond battery replacement is not rec-
ommended in the field. Return to OFS for repair.
Calibration of the test units is recommended once per year.
Contact OFS 888 438 9936 [US & Canada] or 860 678
0371 for proper calibration.
