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3-2
Maintenance
Handling and cleaning precautions
Dust
Cover the optical port opening when not in use to prevent internal contamination of the
Model 2520INT. Inconsistencies on the internal surface of the sphere will cause inaccura-
cies in measurements.
Cleaning
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Calibration
The Model 2520INT should be calibrated once a year. Contact your Keithley representa-
tive or call the factory directly to inquire about these services.
Clean any exposed connector using a cleaning kit supplied by the connector manu-
facturer or high-grade isopropyl alcohol and a cotton swab.
To clean with alcohol and a swab, dab the tip of a cotton swab in alcohol and then
shake off any excess alcohol. The tip should be moist, not dripping wet. Stroke the
swab tip gently across the surface of the connector and around the connector fer-
rule.
Either allow the connector a minute to dry or blow dry the connector using clean
compressed air. Be careful when using compressed air because improper use may
deposit a spray residue.
Model 2520INT Quick Start Guide
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