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sion. For best results, place the IR dongle and the IR window on the 1522 at an
angle of 0° and within 0.5 meters.
11.4 CE Comments
11.4.1 EMC Directive
Hart Scientific’s equipment has been tested to meet the European Electromag-
netic Compatibility Directive (EMC Directive, 89/336/EEC). The Declaration
of Conformity for your instrument lists the specific standards to which the unit
was tested.
The instrument was designed specifically as a test and measuring device. Com
-
pliance to the EMC directive is through IEC 61326-1 Electrical equipment for
measurement, control and laboratory use – EMC requirements (1998).
As noted in the IEC 61326-1, the instrument can have varying configurations.
The instrument was tested in a typical configuration with shielded, grounded
probe and RS-232 cables. Emissions may, in non-typical applications, exceed
the levels required by the standard. It is not practical to test all configurations,
as the manufacturer has no control over the probes the user may connect to the
instrument.
11.4.1.1 Immunity Testing
The instrument was tested to the requirements for industrial locations. This al
-
lows the instrument to be used in all types of locations from the laboratory to
the factory floor. Criterion B was used for Radiated RF (IEC 61000-4-3) and
Conducted RF (IEC 61000-4-6). Therefore, the operation of the instrument
may be affected by excessive electromagnetic interference and the instrument
may not perform within the normal specification limits in such an environment.
Criterion C was used for Electrostatic Discharge (ESD, IEC 61000-4-2) and
1522 Handheld Thermometer Readout
User’s Guide
60
Figure 10 Infrared Dongle Position