Presentation - Chauvin Arnoux C.A 41 Notice De Fonctionnement

Pollution of the radio-electric environment is becoming more and more severe, which leads to problems
of malfunctioningin many types of electrical equipment, especially since the use of sequential logic and
the development of microprocessors.
These modern technics are used in practically all types of industrial equipment which makes them
particularly sensitive to interference and electromagnetic disturbances.
The C.A 41, manufactured by CHAUVIN ARNOUX, allows the user to measure these levels of disturbance.
Measurements are of two types:
Measurement of atmosphere (susceptibility)
This measurement indicates the value of the electromagnetic field in which equipment is located,
in order to check that this field does not exceed the permitted limits in accordance with standards
801-3 and IEC 1000-4-3 or similar..
Measurement of emissivity (radiation)
This measurement indicates the value of the electromagnetic field emitted by equipment
which is switched ON, and consequently its class of electromagnetic compatibility in accordance
with the applicable standard.
The C.A 41 is a small portable instrument that measures the electric field present in the atmosphere
surrounding its measurement probe.
This probe consists of an aerial combined with a high frequency detector. The wide passband of this unit
enables the measurement of electrical fields from 0.1 V/m to 200 V/m for frequencies between
100 kHz and 2.5 GHz.
The connection between the measurement probe and the base instrument is made via a socket which
allows the measurement probe to be removed during transportation.
The use of microprocessors for measurement, calculations and management of the display makes the
instrument simple to use and very accurate.
The large dimensions of the LCD comprise a 200 count digital display, a logarithmic 40-segment bargraph
and a display of the different measurement symbols that provide easy reading for the user.
An analogue output allows the measurement to be controlled at a distance for recording on a plotter or
an analogue recorder with a minimum impedance of 100 kΩ.

2. PRESENTATION

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