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Document Part No. E5500-90024 Ed. 1.0
Table 1
Safety symbols and instrument markings (continued)
Safety symbols
Frame or chassis terminal
Terminal is at earth potential. Used for measurement and control
circuits designed to be operated with one terminal at earth potential.
Terminal for neutral conductor on permanently installed equipment.
Terminal for line conductor on permanently installed equipment.
Standby (supply); units with this symbol are not completely
disconnected from ac mains when this switch is off. To completely
disconnect the unit from ac mains, either disconnect the power cord, or
have a qualified electrician install an external switch.
Instrument markings
The CE mark is a registered trademark of the European Community. If it
is accompanied by a year, it indicates the year the design was proven.
The CSA mark is a registered trademark of the Canadian Standards
Association.
The C-tick mark is a registered trademark of the Spectrum Management
N10149
Agency of Australia. This signifies compliance with the Australian EMC
Framework regulations under the terms of the Radio Communications
Act of 1992.
1SM1-A
This text indicates that the instrument is an Industrial Scientific and
Medical Group 1 Class A product (CISPER 11, Clause 4).
E5500 Phase Noise Measurement System Version A.02.00
v
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