Instructions
43
2. PRESENTATION
2.1 GENERAL
Pollution of the radio-electric environment is becoming more and more harsh, which leads to problems
of malfunctioning in many types of electronic equipment, especially since the use of sequential logic and
the development of microprocessors.
These modern techniques are used in practically all types of industrial equipment which makes them
particularly sensitive to interference and electromagnetic disturbances. The C.A 43 FIELDMETER allows
the user to measure these levels of disturbance.
Measurements are of two types:
Measurement of immunity
This measurement gives the value of the electromagnetic eld in which equipment is located, in
order to check that this eld does not exceed the permitted limits in accordance with applicable standards.
Measurement of emissivity
This measurement gives the value of the electromagnetic eld emitted by equipment which is switched
ON, and consequently its class of electromagnetic compatibility in accordance with the applicable
standard.
The C.A 43 is a small portable instrument that mesures the electric eld 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 elds 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 LCD comprises a 2000 count digital display, a logarithmic 35-segment bargraph and a display
of the different measurement symbols that provide easy reading for the user.
The bi-directional digital output via optical bre permits access to all data for printing and processing of
measurements on an external processing unit. To allow you to do this, the EMIGRAPH software program
is supplied as standard with the C.A 43 Fieldmeter.
2.2 USER MANUAL LABELS
ve adhesive labels are supplied with your Fieldmeter. They are simplied reminders about how to use
your instrument. This information is available in ve languages. Chosse your label and carefully stick it to
the back of your instrument. Now you will always have the information necessary to use your Fieldmeter.