Agilent Technologies Switch/Measure manual Analog Bus and Internal DMM Considerations, 2nd Edition

2Features and Functions

Analog Bus and Internal DMM Considerations

This section provides important environmental and electrical considerations that can affect mainframe operation.

Environmental Operating Conditions

The 34980A mainframe, including the optional internal DMM, is designed to operate in a temperature range of 0 °C to +55 °C with non- condensing humidity. The maximum humidity is 80% at 40 °C or higher. Do not use in locations where conductive dust or electrolytic salt dust may be present.

The 34980A should be operated in an indoor environment where temperature and humidity are controlled. Condensation can pose a potential shock hazard. Condensation can occur when the instrument is moved from a cold to a warm environment, or if the temperature and/or humidity of the environment changes quickly.

When used in pollution degree 1 conditions, the maximum voltage rating for the Analog Buses is 300V. When used in pollution degree 2 conditions, the maximum voltage rating is 100V. If conditions change, ensure that condensation has evaporated and the instrument has thermally stabilized until pollution degree 1 conditions are restored before turning on power to the equipment.

N O TE	Pollution Degree 1: No pollution or only dry, non-conductive pollution
	occurs. The pollution has no influence (on insulation) (IEC 61010-1
	2nd Edition).
	Pollution Degree 2: Normally only non-conductive pollution occurs.
N O TE
	Occasionally, a temporary conductivity (leakage current between isolated
	conductors) caused by condensation can be expected (IEC 61010-1
	2nd Edition).

28 34980A User’s Guide