ETS-Lindgren 5411 GTEM! Test Cell - Manual (Page 21)

Maintenance
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Connectors
The RF and other connectors are delicate in floor and side wall-mounted
positions. Periodic examination of these connectors for damage will prevent use
of a connector with damaged pins or other connections, assuring proper
operation of the connectors. Protect these connectors when they are not in use.
Absorber Tips
The RF absorber tips are fragile and easily broken off. They may be easily
replaced with almost any contact cement or with rapid-curing epoxy cement. If
the tips are too damaged to reuse, they may be replaced by cutting off the entire
tip at a point where the absorber body is about 10 cm by 10 cm, and then
replacing the entire tip. Extra absorbers are available from the factory.
Absorber tip protectors are installed on some GTEM! cells where personal
access inside is expected. These tip protectors are cut from block-expanded
polystyrene. They will protect the tips from casual contact. Extra or replacement
tip protectors are available from the factory.