Agilent Technologies 22D Especificações descarregar pdf (Página 73)

4-7

Calibrating and Adjusting

To perform User Cal

Perform self-calibration:

• every 6 months or after 1000 hours of operation.

• if the ambient temperature is >10 °C from the calibration temperature.

• if you want to maximize the measurement accuracy.

The amount of use, environmental conditions, and experience with other

instruments help determine if you need shorter adjustment intervals.

User Cal performs an internal self-alignment routine to optimize the signal path

in the oscilloscope. The routine uses internally generated signals to optimize

circuits that affect channel sensitivity, offset, and trigger parameters.

Disconnect all inputs and allow the oscilloscope to warm up before performing

this procedure.

User Cal should be performed at least once a year, any time the ambient

temperature of the oscilloscope has changed more than 10 °C since the last User

Cal, or after any repair.

Performing User Cal will not invalidate your Certificate of Calibration.

Successful completion of User Cal does not certify this oscilloscope with a

National Institute of Standards and Technology (NIST) calibration.

Disconnect all inputs signals from the oscilloscope

2 Set the rear-panel CALIBRATION switch to UNPROTECTED.

3 Press the Utility key, then press the Service softkey.

4 Begin the Self Cal by pressing the User Cal softkey.

5 When the User Cal is completed, set the rear-panel CALIBRATION switch

PROTECTED.

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Agilent Technologies 22D Especificações Página 73