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21
Preventive Maintenance
Connector Removal
GPIB Connectors
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.
Precision 3.5 mm Connectors
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 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 (Agilent part number 8720-1765). Semirigid
cables are metal tubes, custom-formed for this system from semirigid coax
cable stock.
3.5 mm Connectors with a gold hex nut
The semirigid cables that go to 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 slightly
until alignment is correct for the connectors to mate. When the two connectors
are properly aligned, turning the instrument's connector body will pull in the
semirigid cable's connector. Tighten firmly by hand.
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.
Agilent E5505A User's Guide
459
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