To Run The Self Calibration - Agilent Technologies Infiniium 90000 A Service Manual

To run the self calibration

Let the Oscilloscope Warm Up Before Adjusting
Warm up the oscilloscope for 30 minutes before starting calibration procedure. Failure to allow warm
up may result in inaccurate calibration.
The self calibration uses signals generated in the oscilloscope to calibrate channel sensitivity,
offsets, and trigger parameters. You should run the self calibration
• yearly, or according to your periodic needs,
• when you replace the acquisition assembly or acquisition hybrids,
• when you replace the hard drive or any other assembly,
• when the oscilloscope's operating temperature (after the 30 minute warm-up period) is more
than ±5 °C different from that of the last calibration.
Equipment Required
Equipment
Adapters (2 supplied with oscilloscope except
for the DSO90254A)
Cable Assembly
Cable Assembly (supplied with oscilloscope
except for the DSO90254A which can use a good
quality BNC cable)
10 MHz Signal Source (required for time scale
calibration)
Self calibration
Calibration time
It will take approximately 1 hour to run the self calibration on the oscilloscope, including the time
required to change cables from channel to channel.
Let the Oscilloscope Warm Up Before Running the Self Calibration.
1
The self calibration should only be done after the oscilloscope has run for 30 minutes at ambient
temperature with the cover installed. Calibration of an oscilloscope that has not warmed up may
result in an inaccurate calibration.
Pull down the Utilities menu and Select Calibration.
2
Click the check box to clear the Cal Memory Protect condition.
3
You cannot run self calibration if this box is checked. See Figure 2-1.
Critical Specifications
3.5 mm (f) to precision BNC No substitute
Ω
50 characteristic impedance BNC (m)
connectors ~ 36 inches (91 cm) to 48
inches (122 cm) long
No substitute
Frequency accuracy better than 0.4 ppm
Chapter 2: Calibration
To run the self calibration
Agilent Part Number
Agilent 54855-67604
Agilent 8120-1840
Agilent 54855-61620
Agilent 53131A with Opt. 010
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