User's Manual
Table Of Contents
- Title page
- Contents
- 1 General Information
- 2 Preparing the Oscilloscope for Use
- 3 Testing Performance
- List of Test Equipment
- To construct the test connector
- To test the 54621D/22D Oscilloscope digital channels
- To verify digital channel threshold accuracy
- To verify voltage measurement accuracy
- To verify bandwidth
- To verify horizontal Dt and 1/Dt accuracy
- To verify trigger sensitivity
- Agilent 54622A/22D/24A Performance Test Record
- Agilent 54621A/21D Performance Test Record
- 4 Calibrating and Adjusting
- 5 Troubleshooting
- 6 Replacing Assemblies
- 7 Replaceable Parts
- Declaration of Conformity
- Notices
4-2
Calibrating and Adjusting
This chapter explains how to adjust the oscilloscope for optimum
operating performance. You should perform the hardware adjustments
and self-calibration according to the following recommendations.
• Perform hardware adjustments every 12 months or after 2,000 hours
of operation.
• 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.
In this chapter, you will:
• Adjust the power supply
• Perform self-calibration
• Adjust the display
Let the Equipment Warm Up Before Adjusting
Before you start the adjustments, let the oscilloscope and test equipment
warm up for at least 30 minutes.
Read All Cautions and Warnings
Read the following cautions and warning before making adjustments or
performing self-calibration.
service.book Page 2 Wednesday, December 18, 2002 8:35 AM