Keysight Technologies 85055A, Руководство пользователя и сервисное руководство

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3-12 Keysight 85055A User’s and Service Guide
Use, Maintenance, and Care of the Devices
Gaging Connectors
3-
Gaging the Airline
The airlines in this kit are measured and matched for length at the factory using
special fixtures and gages. Because the gages supplied in the calibration kits
do not have the accuracy of the factory gages, use the following procedure for
very general results only. Perform this procedure whenever you suspect that a
center conductor has been switched with another airline or that a device has
been damaged.
1. Select a male connector gage and male short for this procedure. Refer to
Table 6-3 on page 6-5 for part numbers.
2. Inspect and clean the mating surfaces and connector threads of the short,
airline, and gage. Refer to “Visual Inspection” and “Cleaning Connectors”
earlier in this chapter.
3. Zero the connector gage (refer to Figure 3-4 ):
a. While holding the gage by the barrel and without turning the gage
or the short, connect the gage to the short by interconnecting the
male and female connectors. Connect the nut finger tight. Do not
overtighten.
b. Using an open-end wrench to keep the device body from rotating,
use the torque wrench recommended for use with this kit to tighten
the connecting nut to the specified torque. Refer to “Final
Connection Using a Torque Wrench” on page 3-17 for additional
information.
c. As you watch the gage pointer, gently tap the barrel of the gage to
settle the reading.
d. The gage pointer should line up exactly with the zero mark on the
gage. If not, loosen the dial lock screw on the gage and rotate the
gage dial so that the pointer is aligned with the zero mark. Tighten
the dial lock screw.
e. Without turning the short or the gage, remove the short from the
gage. Refer to “How to Separate a Connection” on page 3-20 .
Always hold a connector gage by the gage barrel, below the dial indicator.
This gives the best stability, and improves measurement accuracy.