168
Appendix E
Caring for Connectors
Mechanical Specifications
Figure E-5
Type-N connectors
Therefore the mechanical specifications of Type-N connectors give a
maximum protrusion of the female contact fingers in front of the outer
conductor mating plane and a minimum recession of the shoulder of the
male contact pin behind the outer conductor mating plane.
As Type-N connectors wear, the protrusion of the female contact fingers
generally increases, due to wear of the outer conductor mating plane
inside the female connector. This decreases the total center conductor
contact separation and should be monitored carefully.
75 Ohm Type-N Connectors
75
Ω
Type-N connectors differ from 50
Ω
Type-N connectors most
significantly in that the center conductor, male contact pin, and female
contact hole are smaller. Therefore, mating a male 50
Ω
Type-N
connector with a female 75
Ω
Type-N connector will destroy the female
75
Ω
connector by spreading the female contact fingers apart
permanently or even breaking them.
NOTE
If both 75
Ω
and 50
Ω
Type-N connectors are among those on the devices
you are using, identify the 75
Ω
Type-N connectors to be sure that they
are never mated with any 50
Ω
Type-N connectors.
MALE
FEMALE
Outer Conductor
Mating Plane
Содержание N8972A
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Страница 31: ...11 2 Test Descriptions This chapter descibes each test required for calibration and performance verification ...
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