PIM Master preventive maintenance consists of cleaning the unit and inspecting and cleaning the RF connectors on the instrument and all RF cables. Clean the PIM Master with a soft, lint‑free cloth slightly dampened with water, or water and a mild cleaning solution.
Clean the RF connectors and center pins with a lint‑free wipe or cotton swab dampened with isopropyl alcohol. Use a non‑metallic object (such as the wooden end of a cotton swab) to push the lint‑free wipe into the connector RF interface to remove metal flakes. Visually inspect the connectors. The pins of the connectors should be unbroken and uniform in appearance. If you are unsure whether the connectors are undamaged, gauge the connectors to confirm that the dimensions are correct.
Visually inspect the test port cables. To obtain accurate readings within instrument specifications, test port cables must be: free of metal flakes, uniform in appearance, and not stretched, kinked, dented, or broken.