R&S ZVB - Port Conversion; Defining a Balanced Ports Configuration

R&S
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ZVA / R&S
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ZVB / R&S
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ZVT Measurement Examples
Port Conversion
Operating Manual 1145.1084.12 – 30 84
S-parameter or ratio).
3. Click Trace - Trace Func - Time Domain - Time Domain to transform the active trace to the time
domain.
The transformed trace is displayed in the active diagram area. To refine the analysis, you can modify the
number and position of the sweep points (Channel - Sweep - Number of Points, Channel - Stimulus),
select a different transform type and window (Trace - Trace Func - Time Domain - Define Transform...)
and vary the time range (Trace - Trace Func - Time Domain - Time Domain Stimulus Axis...).
To eliminate an unwanted response from the measured trace...
1. Calculate a time domain transform as described above, Setting up a time domain measurement.
2. Click Trace - Trace Func - Time Domain - Define Time Gate and place a time gate on the
transformed trace. To remove a single response use a Notch gate type. To remove everything
outside a specified area, use a Bandpass gate type.
3. Click Trace - Trace Func - Time Domain - Time Gate to enable the time gate. If necessary, go
back to the Define Time Gate dialog to correct your time gate settings.
4. Click Trace - Trace Func - Time Domain - Frequency Domain.
The frequency domain trace now corresponds to the modified time domain trace which is transformed
back into the frequency domain.
Port Conversion
Defining a Balanced Ports Configuration
The Balanced Ports and Port Groups dialog comprises the functions for balanced port definition. The
following examples show how to define and use balanced ports.
To perform a balanced measurement...
The following example shows how to perform S-parameter measurements on a 2-port DUT with balanced
input and balanced output using a 4-port network analyzer. You can either use a predefined port
configuration with fixed port assignments or define your own port configuration.
To use a predefined port configuration,
1. Click Trace – Measure – More S-Params... – Balanced Ports and Port Groups....
2. In the Predefined Configs tab of the Balanced Ports and Port Groups dialog opened, select the
port configuration that is suitable for your DUT.
3. Open the Def Balanced Port tab and assign the appropriate differential and common mode
reference impedances to both logical ports.