Concepts and Features
R&S
®
ZNB/ZNBT
97
User Manual 1173.9163.02 ─ 38
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"Lower Edge" is the closest frequency below the maximum (or minimum), where
the trace value is equal to the maximum (minimum) value minus (plus) n dB.
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"Upper Edge" is the closest frequency above the maximum (or minimum), where
the trace value is equal to the maximum (minimum) value minus (plus) n dB.
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The "Quality Factor (3 dB)" is the ratio between the "Center" frequency and the 3-
dB "Bandwidth"; it does not depend on the selected bandwidth factor.
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The "Quality Factor (BW)" is the ratio between the "Center" frequency and the
"Bandwidth" displayed above. This result is available only if the selected bandwidth
factor is different from 3 dB.
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"Loss" is the loss of the filter at its center frequency and is equal to the response
value of marker no. 4. For an ideal bandpass filter the loss is zero (0 dB), for an
ideal bandstop filter it is –
∞
dB.
4.2.1.4
Channel List and Channel Settings
The main properties of all channels assigned to the traces in the diagram are displayed
in the channel list below the diagram.
Each line in the channel list describes a single channel. The channel of the active trace
is highlighted. The lines are divided into several sections with the following contents
(from left to right):
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The "Channel Name" appears in the first section. The default names for new chan-
nels are Ch<n> with an automatically assigned number <n>. If a time domain
transform is active, the R&S
ZNB/ZNBT displays an additional line to indicate the
stimulus range of the displayed time-domain trace.
Open the "Channel Manager" from the name segment's context menu to change
the channel name.
Screen Elements
