How To Clean Optical Glass Plates - Keysight N7744A User Manual

6
Maintenance and Troubleshooting

How to clean optical glass plates

Additional Cleaning Information
96
The multiport power meter has an optical glass plate to protect the
sensor. This has a special coating that is sensitive to solvents, grease,
liquid and mechanical abrasion. Take extra care when cleaning this
plate.
Preferred Procedure
Use the following procedure on most occasions.
1 Clean the plate by rubbing a new, dry cotton-swab over the surface
using a small circular movement.
2 Blow away any remaining lint with compressed air.
Procedure for Stubborn Dirt
Use this procedure particularly when there is greasy dirt on the plate:
1 Moisten a new cotton-swab with isopropyl alcohol.
2 Clean the plate by rubbing the cotton-swab over the surface using a
small circular movement.
3 Using a new, dry cotton-swab remove the alcohol, any dissolved
sediment and dust.
4 Blow away any remaining lint with compressed air.
The following cleaning procedures may be used with other optical
equipment:
•
How to clean bare fiber ends
How to clean bare fiber ends
Bare fiber ends are often used for splices or, together with other optical
components, to create a parallel beam. The end of a fiber can often be
scratched. You make a new cleave. To do this:
1 Strip off the cladding.
2 Take a new soft-tissue and moisten it with isopropyl alcohol.
3 Carefully clean the bare fiber with this tissue.
Keysight N774x Series