Agilent Technologies 11898A, User Manual

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3-3
Reference
In Case of Difficulty
If the plug-in does not operate
Make the following checks:
❒
Is the plug-in module firmly seated in the extender bay?
❒
Is the module extender firmly seated in the mainframe?
❒
Are the knurled screws at the bottom of the plug-in module finger-tight?
❒
Are the knurled screws on the module extender finger-tight?
❒
Are the module extender fuses good? (See “To inspect and replace fuses” on
page 3-3.)
❒
Is a trigger signal connected to a trigger input? Try selecting
Free Run
from the
Trigger menu.
❒
If other equipment, cables, and connectors are being used with the plug-in
module, are they connected properly and operating correctly?
❒
Review the procedure for the test being performed when the problem ap-
peared. Are all the settings correct? Can the problem be reproduced?
❒
Are the connectors clean? See “Cleaning Connections for Accurate Measure-
ments” on page 3-7 for more information.
If all of the above steps check out okay, and the plug-in module still does not
operate properly, refer to the Troubleshooting section of the documentation
provided with the plug-in module.
To inspect and replace fuses
The Agilent 11898A module extender has two fuses inside the mainframe sec-
tion of the module extender. The fuses protect the high current power supply
lines in the unlikely event of a short circuit in the module or cable.
To inspect or replace these fuses:
1 Remove the plug-in from the module extender bay.
2 Remove the module extender from the mainframe.
3 Gently pry the left-side cover from the module extender. A small screwdriver
should be inserted at the rear corners of the side cover.
4 Use a fuse-puller to remove both fuses for inspection and/or replacement.