Agilent Technologies Infiniium 90000 A Service Manual page 16

Chapter 2: Calibration
To run the self calibration
Figure 2-1
Clear this check
box before starting
calibration
Click here to start
calibration
Calibration Dialog
Click Start, then follow the instructions on the screen.
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a Decide if you want to perform the Time Scale Calibration. Your choices are:
b Disconnect everything from all inputs and Aux Out.
c Connect the calibration cable from Aux Out to channel 1.
d Connect the calibration cable from Aux Out to each of the channel inputs as requested.
e Connect the 50 Ω BNC cable from the Aux Out to the Aux Trig on the front panel of the
f A Passed/Failed indication is displayed for each calibration section. If any section fails,
After the calibration procedure is completed, click Close.
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16
Box
The routine will ask you to do the following things in sequence:
• Standard Calibration - Time scale calibration will not be performed. Time scale
calibration factors from the previous time scale calibration will be used and the 10 MHz
reference signal will not be required. The remaining calibration procedure will continue.
• Standard Calibration and Time Scale Calibration - Performs the time scale calibration.
This option requires you to connect a 10 MHz reference signal to channel 1 that meets
the following specifications. Failure to use a reference signal that meets this specification
will result in an inaccurate calibration.
Frequency: 10 MHz ±0.4 ppm = 10 MHz ±4 Hz
Amplitude: 0.2 Vpeak-to-peak to 5.0 Vpeak-to-peak
Wave shape: Sine or Square
• Standard Calibration and Reset Time Scalie Calibration - Factory time scale calibration
factors will be used. The 10 MHz reference signal will not be required. The remaining
calibration procedure will continue.
You must use the 54855-61620 cable assembly with two 54855-67604 adapters for all
oscilloscopes except for the DSO90254A which can use a good quality BNC cable. Failure
to use the appropriate calibration cable will result in an inaccurate calibration.
oscilloscope.
check the calibration cables and run the oscilloscope Self Test in the Utilities menu.
Page 87 also has a little section on what to do if a self cal fails in terms of replacing
assemblies.