Boonton PIM 31 User Manual - Manual (Page 19)

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DO NOT use sharp devices at the touch screen.
Users can operate PIM31 test systems but utilizing the touch
screen or via keyboard/mouse. The user interface is designed
specifically for field use; all vital operations can be conveniently
accessed via the touch screen interface. Do not use sharp devices;
they can damage the touch screen. The touch screen, display and
CPU are a single integrated module. In case of service the
complete module has to be exchanged. To prevent costly repairs,
use only your fingers or very dull devices to interact with the
screen.
4.1 USING HIGH PERFORMANCE RF ACCESSORIES
PIM test sets combine very high output power, with extremely sensitive receivers.
Note: The sensitivity of the PIM 31 receiver is many times greater than the
sensitivity of a Base Station. Any unwanted influence generated by poor
performing accessories will reduce the accuracy of the desired measurement. To
ensure quality measurements great care has to be taken; not only for the test
system but also for the cables and accessories. Remember you want to measure
the PIM of the device under test, not a poor performing or worn accessory.
Prevent unnecessary force:
Nearly all RF connectors are designed to allow for manual
connection. To ensure a proper connection, RF connectors should
be manually mated, push in to seat the center pin, then hand
tightened until seated. The torque wrench should only be used to
tighten the last ½ turn or less. Improper connections will cause
performance loss. This includes under torquing and over torquing.
Both, over and under-torquing, result in weak connections which
contribute to PIM. Over tightening may damage the connector and
lead to visible metal fragments in the connector’s surface. All
damaged connectors and connectors savers should be replace
prior to testing.
Caution