Concepts and features
R&S
®
ZNB/ZNBT
260User Manual 1173.9163.02 ─ 62
noise floor of the receivers is shifted 10 dB down by reducing the attenuation in the
frontends. The trace noise for transmission measurements is also improved.
Hence, a R&S ZNB4|8 with Extended Dynamic Range option is well suited to test pas-
sive devices with high dynamic range. The extended dynamic range can also be used
to measure accurately devices with high attenuation or to measure devices with
medium attenuation using wider IF bandwidths for higher measurement speed. With 10
dB more dynamic range, measurement bandwidths can be increased by a factor of 10.
A typical production application that currently uses a sweep with 201 points with 10
kHz bandwidth and full 2-port calibration can now use 100 kHz to become significantly
faster.
Table 4-23: Extended Dynamic Range Options for R&S
ZNB
Analyzer type 2-port 4-port
R&S ZNB4 R&S ZNB4-B52 R&S ZNB4-B54
R&S ZNB8 R&S ZNB8-B52 R&S ZNB8-B54
●
Extended Dynamic Range options are not available for R&S ZNB20|26|40|43.
●
Extended Dynamic Range and Receiver step attenuators are mutually exclusive
●
Extended Dynamic Range and Bias Tees are mutually exclusive
●
To achieve the higher sensitivity, with the Extended Dynamic Range option:
– The compression point (0.1 dB) is reduced
– The maximum output power is reduced
See the R&S ZNB data sheet for details
Options R&S ZNBT8-B504/-B508/-B512/-B516/-B520/-B524
The Extended Dynamic Range hardware options for the R&S ZNBT8 have similar RF
properties as the Extended Dynamic Range hardware options for the R&S ZNB4 and
R&S ZNB8. See the R&S ZNBT data sheet for details.
Option R&S ZNBT8-B504 is only available with a new R&S ZNBT8. With this option,
ports 1 to 4 are equipped with Extended Dynamic Range reflectometers instead of
standard reflectometers. Options R&S ZNBT8-B508 to R&S ZNBT8-B524 are port
extensions with Dynamic Range reflectometers; see Chapter 4.7.1, "Additional test
ports (R&S ZNBT only)", on page 222. They can be retrofitted at Rohde & Schwarz
service.
Optional extensions and accessories
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