Getting Started
R&S
®
ZNA
81User Manual 1178.6462.02 ─ 29
3.5.2 Key features
The 1.0 mm VNA system R&S ZNA67EXT can sweep through a frequency range from
10 MHz to 110 GHz continuously. It.supports two different measurement modes:
●
Measurements with internal test sets cover a frequency range between 10 MHz
and 67 GHz.
The R&S ZNA67EXT is based on a vector network analyzer R&S ZNA67. Connect
the DUT to any of the test ports of the R&S ZNA and measure its properties as
described in the R&S ZNA user manual (see https://www.rohde-schwarz.com/
manual/ZNA) or help system.
●
Measurements with external test sets cover an extended frequency range between
10 MHz and 110 GHz. The DUT is connected to the 1 mm connectors at the front
of the diplexers R&S ZVA-ZD110. This measurement mode is described in the
present manual.
This manual describes the external test sets and their connection to the DUT and to
the R&S ZNA. A typical measurement example is presented in Chapter 3.5.7, "Basic
operation", on page 99.
The measurement mode of each VNA port is selected in the Converter Configuration
dialog.
●
"Converter Type" > "None": internal test sets
●
"Converter Type" > "ZNA67EXT-TS": external test sets
●
Selecting another "Converter Type" allows you to measure within the selected con-
verter's frequency range.
Operation with external test sets
The external test sets enable a frequency range between 10 MHz and 110 GHz. The
analyzer combines two different measurement methods to achieve this extended
range.
●
At frequencies below approx. 67 GHz (i.e. in "low frequency" mode), the frequency
converter in the external test set is bypassed. The source signal of the respective
analyzer port is directly fed to the 1 mm test port connector of the diplexer. The net-
work analyzer measures the a-waves and b-waves from the Ref Out and Meas Out
on the diplexer, respectively. The RF connectors LO IN, RF IN, REF OUT, and
MEAS OUT on the connector panel of the converter are not used.
●
To achieve frequencies above approx. 67 GHz (i.e. to measure in "high frequency"
mode), the frequency converter in the external test set is used. The source signal
of the respective analyzer port is fed to the frequency converter, and the converted
signal is routed to the 1 mm test port connector of the diplexer. The frequency con-
verter uses frequency multipliers to transform the source signal into a high-fre-
quency stimulus signal. A local oscillator (LO) signal from the Converter LO output
of the analyzer (R&S ZNA-B8) is used for down-conversion of the reference and
measurement channels. If more than one converter is used, a power divider feeds
the LO signal to the converters. This test setup ensures a stable phase relationship
between the LO IN signals of the converters.
Getting started with R&S
ZNA67EXT
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