Agilent Technologies 54624A, 54621D manual W A R N I N G C A U T I O N C A U T I O N C A U T I O N

W A R N I N G

C A U T I O N

C A U T I O N

C A U T I O N

Calibrating and Adjusting

HAZARDOUS VOLTAGES !

Read the safety summary at the back of this book before proceeding.

Maintenance is performed with power supplied to the oscilloscope and with the protective covers removed. Only trained service personnel who are aware of the hazards involved should perform the maintenance. Whenever possible, perform the procedures with the power cord removed from the oscilloscope.

REMOVE POWER TO AVOID DAMAGE !

Do not disconnect any cables or remove any assemblies with power applied to the oscilloscope. Otherwise, damage to the oscilloscope can occur.

USE EXTERNAL FAN TO REDUCE TEMPERATURE !

When you must operate the oscilloscope with its cover removed, use an external fan to provide continuous air flow over the samplers. Air flow over the samplers is reduced when the cover is removed, which leads to higher than normal operating temperatures. Have the fan blow air across the system PC board where the heat sinks are located.

AVOID DAMAGE TO ELECTRONIC COMPONENTS !

Electrostatic discharge (ESD) can damage electronic components. When you use any of the procedures in this chapter, use proper ESD precautions. As a minimum, place the oscilloscope on a properly grounded ESD mat and wear a properly grounded ESD strap.

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