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20
Connector Care and Preventive Maintenance
Removing and Reinstalling Instruments
GPIB Connectors
Precision 2.4 mm
and 3.5 mm
Connectors
20-8
E5500 Phase Noise Measurement System Version A.02.00
These are removed by two captured screw, one on each end of the
connector; these usually can be turned by hand. Use a flathead
screwdriver if necessary.
GPIB connectors often are stacked two or three deep. When you are
removing multiple GPIB connectors, disconnect each connector one
at a time. It is a good practice to connect them back together even if
you have not yet replaced the instrument; this avoids confusion,
especially if more than one instrument has been removed.
When putting GPIB connectors back on, you must again detach them
from one another and put them on one at a time.
These are precision connectors. Always use care when connecting or
disconnecting this type of connector. When reconnecting, make sure
you align the male connector properly. Carefully join the connectors,
being careful not to cross-thread them.
Loosen precision 2.4 mm (or 3.5 mm) connectors on flexible cables
by turning the connector nut counter-clockwise with a 5/16 inch
wrench. Always reconnect using an 8 inch-lb torque wrench (part
number 8720-1765). This wrench may be ordered from Agilent
Technologies.
Semirigid cables are metal tubes, custom-formed for this system from
semirigid coax cable stock.
2.4 mm (or 3.5 mm) connectors with a gold hex nut. The semirigid
cables that go the RF outputs of some devices have a gold connector
nut. These do not turn. Instead, the RF connector on the instrument
has a cylindrical connector body that turns. To disconnect this type
of connector, turn the connector body on the instrument clockwise.
This action pushes the cable's connector out of the instrument
connector.
To reconnect, align the cable with the connector on the instrument.
Turn the connector body counterclockwise. You may have to move
the cable a small amount until alignment is correct the connectors
mate. When the two connectors are properly aligned, turning the
instruments connector body will pull in the semirigid cable's
connector. Tighten firmly by hand.
2.4 mm (or 3.5 mm) connectors with a silver hex nut. All other
semirigid cable connectors use a silver-colored nut that can be
turned. To remove this type of connector, turn the silver nut
counter-clockwise with a 5/16 inch wrench.
When reconnecting this type of cable:
Document Part No. E5500-90024 Ed. 1.0
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