General Safety Considerations; Safety Earth Ground; Before Applying Power; Servicing - Keysight N9912A Service Manual

Safety and Regulatory Information

General Safety Considerations

General Safety Considerations

Safety Earth Ground

This is a Safety Class I product (provided with a protective earthing
ground incorporated in the power cord). The mains plug shall only
be inserted in a socket outlet provided with a protective earth
contact. Any interruption of the protective conductor, inside or
outside of the instrument, will make the instrument dangerous.
Intentional interruption is prohibited.
Always use the three-prong AC power cord supplied with this product.
Failure to ensure adequate grounding by not using this cord may cause
product damage.

Before Applying Power

If this product is not used as specified, the protection provided by
the equipment could be impaired. This product must be used in a
normal condition (in which all means for protection are intact) only.
This product is designed for use in Installation Category II and Pollution
Degree 2 per IEC 61010-1.
The measuring terminals on this instrument are designed to be used with
external signals described in Measurement Category I, but NOT with
external signals described in Categories II, III, and IV. The input of this
instrument cannot be connected to the mains.

Servicing

These servicing instructions are for use by qualified personnel only.
To avoid electrical shock, do not perform any servicing unless you
are qualified to do so.
Danger of explosion if battery is incorrectly replaced. Replace only
with the same or equivalent type recommended. Discard used
batteries according to local ordinances and/or manufacturer's
instructions.
Keysight N9912A Service Guide 1-3