Agilent Technologies 11898A, User Manual

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1-8
Using the Agilent 11898A Module Extender
Step 4. Perform Calibrations
Step 4. Perform Calibrations
To ensure you obtain the specified accuracy, you must perform a plug-in mod-
ule vertical calibration after connecting a plug-in module to the module
extender. The calibration must also be performed when you move a plug-in
module or the module extender from one slot to another, from one mainframe
to another, or when the temperature changes by
≥
±5
°
C.
C A U T I O N The input circuits of the plug-in modules can be damaged by electrostatic
discharge (ESD). Therefore, avoid applying static discharges to the front-panel
input connectors. Before connecting any coaxial cable to the connectors,
momentarily short the center and outer conductors of the cable together. Avoid
touching the front-panel input connectors without first touching the frame of
the instrument. Be sure that the instrument is properly earth-grounded to
prevent buildup of static charge. For more information on ESD, refer to
“Electrostatic Discharge Information” on page 3-5.
Performing a plug-in module vertical calibration
1 Press Utility , Calibrate , Calibrate plug-in .
2 Select the plug-in module to be calibrated by pressing 1 and 2 or 3 and 4 . (Select
the slots where the module extender is installed.)
3 Start the calibration procedure by pressing Start cal .
4 Follow the on-screen instructions.
Calibrating voltage probes
Because the mainframe’s CAL signal is a voltage source, you can let the instru-
ment compensate for the actual characteristics of your probe by letting the
instrument calibrate to the tip of the probe.