Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
Agilent 34980A Multifunction Switch/Measure Unit *34980-90005*
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Analog Bus and Internal DMM Considerations<br />
This section provides important environmental and electrical<br />
considerations that can affect mainframe operation.<br />
Environmental Operating Conditions<br />
Features and Functions 3<br />
The <strong>34980A</strong> mainframe, including the optional internal DMM, is designed<br />
to operate in a temperature range of 0 °C to +55 °C with non- condensing<br />
humidity. The maximum humidity is 80% at 40 °C or higher. Do not use in<br />
locations where conductive dust or electrolytic salt dust may be present.<br />
The <strong>34980A</strong> should be operated in an indoor environment where<br />
temperature and humidity are controlled. Condensation can pose a<br />
potential shock hazard. Condensation can occur when the instrument is<br />
moved from a cold to a warm environment, or if the temperature and/or<br />
humidity of the environment changes quickly.<br />
When used in pollution degree 1 conditions, the maximum voltage rating<br />
for the Analog Buses is 300V. When used in pollution degree 2 conditions,<br />
the maximum voltage rating is 100V. If conditions change, ensure that<br />
condensation has evaporated and the instrument has thermally stabilized<br />
until pollution degree 1 conditions are restored before turning on power to<br />
the equipment.<br />
NOTE<br />
NOTE<br />
Pollution Degree 1: No pollution or only dry, non-conductive pollution<br />
occurs. The pollution has no influence (on insulation) (IEC 61010-1 <br />
2nd Edition).<br />
Pollution Degree 2: Normally only non-conductive pollution occurs.<br />
Occasionally, a temporary conductivity (leakage current between isolated<br />
conductors) caused by condensation can be expected (IEC 61010-1 <br />
2nd Edition).<br />
<strong>Agilent</strong> <strong>34980A</strong> Mainframe User’s Guide 79