The instrumentwas designed specifically as a test and measuring device. Com-
plianceto the EMC directive is through IEC 61326-1 Electrical equipment for
measurement,control and laboratory use – EMC requirements (1998).
As noted inthe IEC 61326-1, the instrument can have varying configurations.
The instrumentwas tested in a typical configuration with shielded, grounded
probe and RS-232 cables.Emissions may, in non-typical applications, exceed
the levelsrequired by the standard. It is not practical to test all configurations,
as the manufacturerhas no control over the probes the user may connect to the
instrument.
11.2.1.1 Immunity Testing
The instrumentwas tested to the requirements for industrial locations. This al-
lowsthe instrument to be used in all types of locations from the laboratory to
the factoryfloor. Criterion B was used for Radiated RF (IEC 61000-4-3) and
ConductedRF (IEC 61000-4-6). Therefore, the operation of the instrument
may be affectedby excessive electromagnetic interference and the instrument
may not perform within the normal specification limits in such an environment.
CriterionC was used for Electrostatic Discharge (ESD, IEC 61000-4-2) and
ElectricFast Transit (EFT, Burst, IEC 61000-4-4). If the instrument is sub-
jected toEFT conditions at 2kV, the instrument may require the user to cycle
the powerto retu rn to normal operation.
11.2.1.2 Emission Testing
The instrument fulfills the limit requirements for Class A equipment but does
not fulfillthe limit requirements for Class B equipment. The instrument was
not designedto be used in domestic establishments.
11.2.2 Low Voltage Directive (Safety)In order to complywith the European Low Voltage Directive (73/23/EEC),
Hart Scientificequipment has been designed to meet the IEC 1010-1 (EN
61010-1) and theIEC 1010-2-010 (EN 61010-2-010) standards.
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11 Troubleshooting
CE Comments