HP 8712ES User Manual page 22

Figure 1-2
WARNING
Installing the Analyzer
Step 2. Meet Electrical and Environmental Requirements
4. Verify that the power cable is not damaged, and that the power source
outlet provides a protective earth ground contact. Note that the
following illustration depicts only one type of power source outlet.
Refer to Figure 7-11
cord plugs that can be used with your analyzer.
Protective 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 the instrument, is likely to make the
product dangerous. Intentional interruption is prohibited.
1-6
in Chapter 7 to see the different types of power
ES User's Guide