Instructions

60
PEAK to identify the peaks, some of which may exceed the maximum level that is wanted.
(Example: the peaks due to the closeness of a neon light are often greater than 3V/m and
cannot be classed as level II in accordance with IEC 801-3 and IEC 1000-4-3). The PEAK
function switches OFF the 50Hz rejection iter for low frequency elds. Consequently, your
instrument becomes sensitive to the 50Hz electrical environment: mains cable runs,
equipment power supply, etc.
 Point at the target and make the measurements (with probe EF1, certain procedures are
necessary: see below paragraph probe EF1).
As the eld diminishes proportionally with distance, take care to place the extremity of the probe
as close as possible to the zone to checked.
The operator must take care not to be between the source of disturbance and the zone to be
checked: the human body shields electromagnetic elds.
 After each measurement session, switch OFF the instrument by returning the rotary switch to the
OFF position. Remove the probe from the instrument by pushing the locking ring. Tidy away the
elements in the carrying case.
9.2 PROBE EF2
As the EF2 probe is isotropic, it does not require special handling. Its sensitive part measures the eld
according to 3 axes without the aerial having to be moved in the 3 planes. Simply point it at the target
to make the measurement.
9.3 PROBE EF1
The EF1 probe supplied with the C.A
43 is anisotropic. Reception is only via
the vertical polarisation. Consequently,
the reception diagram in the horizontal
plane is circular. In the vertical plane, the
reception diagram conforms to the pattern
shown below.
When the field is perpendicular, the
sensitivity is at a maximum. At 90° in
relation to the vertical axis of detection,
the sensitivity is minimal.