Ef2 Probe; Ef1 Probe - Chauvin Arnoux C.A 43 FILEDMETER Mode D'emploi

PROBE EF2
As the EF2 probe is isotropic, it does not require special handling. Its sensitive part measures
the field 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.

EF1 PROBE

The EF1 probe supplied with the
C.A 43 is anisotropic. Reception
is only via the vertical polarisa-
tion. 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 mi-
nimal.
Because of the anisotropy of the measurement probe, during measurement in a given
atmosphere, the aerial must be moved in all planes, along all axes (see figure) :
C.A 41 + EF1
probe in the
horizontal
plane
70
In the
vertical
plane