Rohde & Schwarz ZNB20, User Manual

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Concepts and Features
R&S
®
ZNB/ZNBT
212 User Manual 1173.9163.02 ─ 38
4.7.5 Frequency Resolution 1 mHz
Option R&S ZNB/ZNBT-K19
This software option improves the frequency resolution of a R&S ZNB/ZNBT to 1 mHz.
4.7.6 Bias Tees (R&S ZNB only)
Option R&S ZNB-B1 for R&S ZNB4/8
The hardware option R&S ZNB-B1 provides additional BNC inputs (labeled BIAS 1,
2,...), which can be used to apply an external DC voltage (bias) to the analyzer ports:
●
Bias Tees for Two-Port R&S ZNB4/R&S ZNB8, order no. 1316.1700.02
●
Bias Tees for Four-Port R&S ZNB4/R&S ZNB8, order no. 1316.1700.04
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R&S ZNB20/R&S ZNB40 are always equipped with bias tees.
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Bias Tees are not available for the R&S ZNBT.
●
The optional bias tees have an impact on the start frequency of R&S ZNB4 and
R&S ZNB8 network analyzers; for details refer to the data sheet and to
[SENSe:]FREQuency... commands.
4.7.7 Internal Second Source
Options R&S ZNB-B2, R&S ZNB20-B2, R&S ZNB40-B2 (and R&S ZNBTx-B112)
The hardware options
●
R&S ZNB-B2 "Internal Second Source for R&S ZNB4, R&S ZNB8 (4-Port)" and
●
R&S ZNB20-B2, "Second Internal Generator for R&S ZNB20 (4-Port)"
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R&S ZNB40-B2, "Second Internal Generator for R&S ZNB40 (4-Port)"
expand four-port network analyzers R&S ZNB with a second internal generator, which
can be used as an additional stimulus signal, e.g for mixer measurements; see Chap-
ter 4.7.3, "Mixer and Frequency Conversion Measurements" , on page 203.
For the R&S ZNBT an internal second source is automatically added with option
R&S ZNBTx-B112 (x=8,20), i.e. if the analyzer is equipped with 12 ports or more; see
Chapter 4.7.1, "Additional Test Ports (R&S ZNBT only)" , on page 192.
Optional Extensions and Accessories