Concepts and Features
R&S
®
ZNC
32
User Manual 1173.9557.02 ─ 13
●
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.
●
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.
●
"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.
3.2.2.4
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):
●
The "channel name" appears in the first section. The default names for new channels
are Ch<n> where <n> is a current number. If a time domain transform is active, the
R&S ZNC displays an additional line to indicate the stimulus range of the displayed
time-domain trace.
Tap and hold the section and call the "Channel Manager" from the context menu to
change the channel name.
●
Start
indicates the lowest value of the sweep variable (e.g. the lowest frequency
measured), corresponding to the left edge of a Cartesian diagram.
●
The
color legend
shows the display color of all traces assigned to the channel. The
colors are different, so the number of colors is equal to the numbers of traces
assigned to the channel.
Screen Elements