Applies to: EUTs with analogue or digital inputs and analogue or digital outputs.
Aim: To measure the output noise of the EUT with no signal present.
Method
If the EUT has a digital input, it is fed with a digital-zero signal; if the EUT has an analogue input it is
terminated with 50R (or 25R if unbalanced).
The RMS amplitude of the output noise of the EUT is measured via the standard weighting filter. The
result is reported for both channels, in dBFS (in the case of an analogue measurement, this is
equivalent to dB below the specified D/A line-up), and designated as 'dBFS CCIR-RMS'.
AES17 - Idle Channel Noise.png