Rohde & Schwarz R&S ZNA Series - Connector panel

Getting Started
R&S
®
ZNA
91User Manual 1178.6462.02 ─ 29
A suitable cable is shipped with the VNA system.
Connector panel
The connector panel of the diplexer provides input and output connectors for RF sig-
nals and a DC input. Connectors labeled Low are used in low frequency mode only;
see "Operation with external test sets" on page 81.
Figure 3-17: Connector panel of R&S ZVA-ZD110 Var 18
The picture above shows the connector panel of the "right" diplexer variant (Var 18).
For the "left" variant (Var 12), the horizontal order of the connectors is exactly opposite.
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The Sense and Force triaxial BNC female connectors and the 4 mm GND socket
implement the bias tee. Bias is applied via the Force input, which is protected by
an exchangeable fuse (see "Fuse panel" on page 92).
The Sense output is connected to the bias tee via a 1 kΩ resistor, which allows
measuring the bias voltage close to the DUT without the uncertainty caused by a
voltage drop on a long bias line.
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RF In Low / High is a 1.85 mm female connector, which receives the RF source
signal from the R&S ZNA67EXT network analyzer unit. This connector is used in
low frequency and in high frequency mode.
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Ref Out Low is a 1.85 mm female connector, which provides the reference signal
(a-wave) in low frequency mode.
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Meas Out Low is a 1.85 mm female connector, which provides the measured signal
(b-wave) in low frequency mode.
RF In, Ref Out, and Meas Out are connected to the corresponding direct access con-
nectors of the related VNA port. The complete RF and IF connection of the external
test set is described in Chapter 3.5.6, "Connecting the external test sets", on page 93.
Maximum input power at RF IN
The RF input power at the RF IN connector must not exceed the maximum value quo-
ted in the data sheet. The maximum value is below the maximum RF source power of
the network analyzer. The "ZNA67EXT-TS" converter type ensures compatible source
powers.
Before you connect your external test set to the network analyzer, always select the
"ZNA67EXT-TS" converter type for the related port using the "Converter Configuration"
dialog (see Chapter 3.5.7.2, "Converter configuration", on page 100).
Getting started with R&S
ZNA67EXT