Keysight N9938-90003 User’s Guide 299
Safety Considerations
Packaging Markings
Direct current (DC) equipment
CAUTION, risk of danger, refer to safety information in manual.
DC connector polarity
Ingress Protection Code
Operating instructions should be considered when operating the device.
U.S. Energy efficiency rating
Eurasian Conformity Mark indicating conformance to all technical regulations of
the Eurasian Customs Union.
UL component mark. Recognized in Canada and the United States.
Operation for indoors only.
India mark from the Bureau of Indian standards. IS 13252 is the equivalent India
standard to IEC 60950-1.
IRAM/S-mark is the safety mark for Argentina.
Dispose of properly