Boonton PIM 31 User Manual - Manual (Page 20)

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Keep Accessories clean:
Dust and dirt may affect test results. Make sure accessories are
stored properly and clean. Please use the protective caps - to keep
the accessories free from contamination. Never use sharp devices
to remove any contamination because scraping can cause metal
chips in the contact areas, which will generate PIM. If any dirt,
corrosion or any other foreign matter needs to be removed use
special RF contact cleaning tabs and / or compressed air.
Keep Accessories dry:
Even the best plating will wear if accessories are frequently used.
Moisture will cause oxidation. Prevent moisture by using supplied
protective caps and keeping accessories stored properly. Many
connectors are weather sealed to prevent moisture from entering
the contact area. If you discover moisture use RF contact cleaning
tabs and blow dry with compressed air.
Check for wear and tear:
All metal to metal surface subjected to movement will eventually
show the effects of wear and tear. In the case of PIM
measurements the results appear as an increase in PIM level.
Check your accessories frequently to ensure that they are working
properly. Once you have determined that an accessory is no longer
performing as it should, replace it with a new device. When you
received the replacement, dispose of the old one to prevent
accidental reuse. Check chapter on Accessories for ordering
information of spare and replacement accessories. Accessories are
key to accurate PIM measurements. Although properly functioning,
they are also wear and tear items and will need to be replaced.