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Keysight E4980A/E4980AL Precision LCR Meter
Service Guide
Caution
Safety Summary
When you notice any of the unusual conditions listed below, immediately
terminate operation and disconnect the power cable.
Contact your local Keysight Technologies sales representative or authorized
service company for repair of the instrument. If you continue to operate
without repairing the instrument, there is a potential fire or shock hazard to the
operator.
• Instrument operates abnormally.
• Instrument emits abnormal noise, smell, smoke or a spark-like light during
operation.
• Instrument generates high temperature or electrical shock during
operation.
• Power cable, plug, or receptacle on instrument is damaged.
• Foreign substance or liquid has fallen into the instrument.
Do not exceed the operating input power, voltage, and current level and signal
type appropriate for the instrument being used, refer to your instrument’s
Function Reference.
Electrostatic discharge (ESD) can damage the highly sensitive microcircuits in
your instrument. ESD damage is most likely to occur as the test fixtures are
being connected or disconnected. Protect them from ESD damage by wearing
a grounding strap that provides a high resistance path to ground. Alternatively,
ground yourself to discharge any static charge built-up by touching the outer
shell of any grounded instrument chassis before touching the test port
connectors.
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