Tektronix RFM220, Руководство пользователя

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Reference
Preventative Maintenance
Protect the instrument from adverse weather conditions. The instrument is
not waterproof.
CAUTION.
To avoid damage to the instrument, do not expose it to sprays,
liquids or solvents.
Do not use chemical cleaning agents; they may damage the instrument. Avoid
chemicals that contain benzene, toluene, xylene, acetone or similar solvents.
Preventive maintenance mainly consists of periodic cleaning. The instrument
should be cleaned as needed based on the operating environment.
Cleaning the Exterior
WARNING.
To avoid personal injury or damage to the instrument, do not
allow moisture inside it. Use only enough cleaning solution to dampen your
cloth or swab.
Clean the exterior surfaces of the instrument with a dry, lint-free cloth or a
soft-bristle brush. If dirt remains, use a cloth or swab dampened with a 75%
isopropyl alcohol solution. To rinse, repeat the same process using a cloth
dampened with deionized water. A swab is useful for cleaning in narrow
spaces around the connectors. Do not use abrasive compounds on any part of
the unit.
Make sure that the air intake area on the left side of the instrument is clear of
any obstructions.
RFM220 User Manual 83