Features and Functions
3
Keysight 34980A Mainframe User’s Guide
117
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% R.H. at 31°C and decreases linearly to 50% R.H. at
40°C. 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.
NOTE
Pollution Degree 1:
No pollution or only dry, non-conductive pollution occurs.
The pollution has no influence (on insulation) (IEC 61010-1 2nd Edition).
NOTE
Pollution Degree 2:
Normally only non-conductive pollution occurs.
Occasionally, a temporary conductivity (leakage current between isolated
conductors) caused by condensation can be expected (IEC 61010-1
2nd Edition).
