Noise measurement depends the width the analytical filter
This means that phase jitte can measured with the spectrum analyser, dBc/Hz, which the difference dB
between the line pow measurements dBm and the noise pow dBm/Hz given distance from the
carrier.fr
. Strict standards have been set worldwide define the maximum EMI levels
authorized for given appliance and frequency.
Once again, spectrum analyser with wide-band antenna the ideal tool for measuring the EMI emitted any
system. Whatever the width the filter, the maximum height the curve screen will correspond
to the power the line.SPECTRUM ANALYSER
Connected PC
Spectrum Analyser
Noise power and power line
The analytical filter indicates the pow the line when centred (leaving aside the filter losses which
can compensated).
Video filter
This serves smooth the curve the screen, particularly the noise level. These currents, which
are usually variable, produce electromagnetic waves that are propagated space (radiation) along cables
(conduction). However, may affect the sweep time: 10
Hz video filter will not deliver more than data items per second, 1,000 points are necessary plot the curve,
it will not possible less than
Application Electromagnetic Compatibility (EMC)
Electrical and electronic appliances operate thanks the currents from the electricity supply. has effect the actual
measurement, only applies the on-screen display the curve.
Detailed product brochures can downloaded from www.
When these emissions are not intentional, the case with transmitter, for example, they are referred as
electromagnetic interference (EMI).metrix
