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3-5 Extracting More Information by Using Markers
3-5
Extracting More Information by Using Markers
An S-parameter can be displayed in different formats, as already described. The VNA Master
also allows you to extract information from the trace by using markers. By default, the
marker presents the trace point information using the graph type format, thereby providing
additional flexibility in analyzing S-parameter VNA data. For example, if the graph type is
SWR, then the marker readout is in SWR. You can set the marker type to be something other
than the graph type. For any graph type that the trace may have, the markers can be used to
extract data in any of the following formats:
• Log Magnitude (dB)
• Log Magnitude/2 (dB)
• Log Magnitude (dB) and Phase (deg)
• Linear Magnitude (dB)
• Linear Magnitude (dB) and Phase (deg)
• Phase (deg)
• Real and Imaginary
• SWR
• Group Delay (sec)
• Impedance: Z
• Admittance: Y
• Normalized Impedance: Z
• Normalized Admittance: Y
• Polar Impedance
3-6
How Bias is Generated
Another important feature of a VNA is the ability to provide DC bias voltage at the RF port.
Bias on the RF cable is useful for operating TMA components that are being tested. The
architecture of the VNA Master, when equipped with Option 10, allows for bias to be applied
to the RF ports.
Chapter 10, "Bias Tee, Option 10"
VNA Masters.
3-8
= R + jX
in
= G + jB
in
/Z
= (R + jX)/Z
in
o
/Y
= (G + jB)Y
in
o
PN: 10580-00289 Rev. K
o
o
describes the Bias Tee functions of the
Vector Network Analyzer MG
VNA Fundamentals
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