special signal-to-noise ratio mode is invoked. This mode turns the
generator on and off at regular intervals, making a level measurement
in each state. The displayed result is the difference in dB between the
two measurements, which is the signal-to-noise ratio (also called S/N
or SNR). This automatic mode can be particularly convenient when
making adjustments to a device-under-test to maximize signal-to-noise
ratio.
Each measurement function remembers its settings, so returning to that
function will invoke the same filter and detector options. Operating
convenience for many users is enhanced by setting up Noise and
Amplitude functions with different filter and detector selections so that
noise can be measured to two different standards simply by pressing
the AMPL/NOISE button twice.
4 Operation
Operation Controlling the Analyzer : Noise
4-22 Portable One Plus Access User's Manual
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