Concepts and features
R&S
®
ZND
100
User Manual 1173.9557.02 ─ 61
Figure 4-4: Multi-channel setup dialog
The channel selector in the title bar and the channel-related buttons in the lower part of
the dialog ("Copy to New Channel", "Copy to New Ch + Diagram" allow you to select
the target channels.
●
On "OK", the channel selected in the title bar of the dialog is prepared for the mea-
surement.
●
Using "Copy to New Channel" or "Copy to New Ch + Diagram" it is possible create
a channel and prepare the channel for the measurement in one go.
4.2.3
Trace formats
A trace format defines how a trace is represented in a diagram.
The R&S
ZND supports the following trace formats:
●
"dB Mag", "Phase", "SWR", "Unwr Phase", "Lin Mag", "Log
Mag", "Real", "Imag" and "Delay".
●
Complex trace formats "Polar", "Smith" and "Inv Smith"
The VNA firmware allows arbitrary combinations of trace formats and measured quan-
tities. However, to extract useful information from the measured data, it is important to
select a trace format which is appropriate for the analysis of a particular measured
quantity; see
Chapter 4.2.3.3, "Measured quantities and trace formats"
4.2.3.1
Cartesian trace formats
Cartesian trace formats assign a scalar response to the stimulus value (frequency,
power, or time). The response can be calculated from the measured quantity at the
related stimulus value, but it can also be the result of some mathematical transforma-
tion of the original (unformatted) trace.
Diagram representation
When a Cartesian trace is assigned to a diagram, the stimulus variable appears on the
horizontal axis (x-axis), the response values appear on the vertical axis (y-axis).
Graph Scaling
●
Except for the "Log Mag" format, the y-axis scale is always linear.
Screen elements
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