> The units are dBuV/m It's field strength.
For radiated emissions.
On conducted measurements, it's just dBuV, a voltage reading referred to 1
microVolt. Usually
measured on one of the output 'ports' of the LISN (Line Impedance Stabilization
Network) by
an EMC receiver/spectrum analyzer.
Note: I only addressed 1) the voltage units and 2) the sign confusion in that
previous post.
Many EMI/EMC instruments are calibrated in dBuV usually a measurement in a 50
Ohm coax system (CATV apps=75 Ohms)
Easy conversion factors can be used to render that value in dBm (for a
known/given system Z).
Further note: a BW and detector type (eg. PK, QP for quasipeak, AVG, RMS etc)
are usually spec'd for the test measurement.
de Jim WB5WPA
On Saturday, August 3, 2019, 4:54:26 PM GMT-5, Jim Brown
<jim@audiosystemsgroup.com> wrote:
On 8/3/2019 11:23 AM, JW via RFI wrote:
> dBuV is deciBels relative to a microvolt.
The units are dBuV/m It's field strength.
73, Jim K9YC
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