12-1
12 Specifications
All specifications in this chapter apply to both device types unless otherwise
indicated. Differing specifications for the B and E field are indicated as
follows:
• B field: For Basic Unit only (B field)
• E field: For E-Field Unit only
12.1 Principle of operation
The voltage induced in a measuring coil (probe) is evaluated to measure the
magnetic flux density. The signal voltage is digitized and evaluated in a
digital signal processor (DSP). The DSP emulates the selected filter
characteristics and calculates the flux density resulting from the induced
voltage.
The orthogonal arrangement of the three measurement coils allows
isotropic (i.e. independent of spatial direction) measurement of the field.
Various external field probes are available in addition to the built-in probe.
In the E-Field Unit, three pairs of orthogonally arranged plate electrodes
take the place of the measurement coil. They are used to measure the
dielectric current caused by the electric field strength.
12.2 Field Strength mode
12.2.1 Brief description
• Measurement of the magnetic flux density or electric field strength based
on a broadband or selective evaluation of the signal under test.
• Display of the measurement result in units of Tesla or Gauss (or V/m).
• In the Broadband setting, additional display of the predominant
frequency.
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