Rohde & Schwarz ZNB20, User Manual

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Getting Started
R&S
®
ZNB/ZNBT
33 User Manual 1173.9163.02 ─ 38
The standby toggle switch is located in the bottom left corner of the front panel.
The key serves two main purposes:
●
Toggle between standby and ready state; see Chapter 3.1.8, "Standby and Ready
State" , on page 19.
●
Shut down the instrument; see Chapter 3.1.7, "Starting the Analyzer and Shutting
Down" , on page 18.
3.2.1.7 Front Panel Connectors
The test ports and four USB connectors are located on the front panel of the R&S ZNB.
Test Ports
Numbered connectors:
●
type N (7 mm, female) for R&S ZNB4 and R&S ZNB8
●
PC (3.5 mm, male) for R&S ZNB20
●
K (2.92 mm, male) for R&S ZNB40
The test ports serve as outputs for the RF stimulus signal and as inputs for the mea-
sured RF signals from the DUT (response signals).
●
With a single test port, it is possible to generate a stimulus signal and measure the
response signal in reflection. For a measurement example refer to
Chapter 3.4.2,
"Reflection S-Parameter Measurement" , on page 73.
●
With more than one test port it is possible to perform full two-port, 3-port, ... , or n-
port measurements; see
Chapter 4.3.1, "S-Parameters" , on page 110.
In the standard R&S ZNB configuration, all test ports are supplied by a common
source. Four-port instruments are available with an optional second source. For the
R&S
ZNBT an internal second source is automatically added if the instrument is
equipped with 12 ports or more.
Maximum input levels
The maximum input levels at all test ports according to the front panel labeling or the
data sheet must not be exceeded.
In addition, the maximum input voltages of the other input connectors at the rear panel
must not be exceeded.
It is recommended to use a torque wrench when screwing RF cables on the test port
connectors.
USB Connectors
Four high speed Universal Serial Bus connectors of type A (master USB).
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