Concepts and Features
R&S
®
ZNB/ZNBT
218
User Manual 1173.9163.02 ─ 38
●
Receiver step attenuators are not available for R&S
ZNB20/40.
●
Receiver step attenuators for R&S
ZNB4/8 can be retrofitted at Rohde
&
Schwarz
service.
Table 4-22: R&S
ZNBT8
Ports 1 to 4
Ports 5 to 8
Ports 9 to 12
Ports 13 to 16
Ports 17 to 20
Ports 21 to 24
R&S
ZNBT8-
B361
R&S
ZNBT8-
B362
R&S
ZNBT8-
B363
R&S
ZNBT8-
B364
R&S
ZNBT8-
B365
R&S
ZNBT8-
B366
●
Receiver step attenuators are not available for R&S
ZNBT20.
●
Receiver step attenuators for R&S
ZNBT8 can be retrofitted at Rohde
&
Schwarz
service.
4.7.16 Extended Dynamic Range
Options R&S
ZNB4/8-B52/B54
Hardware options R&S
ZNB4/8-B52/B54 are only available for new R&S
ZNB4 or
R&S
ZNB8. They extend the dynamic range up to 140 dB (typically 150 dB) for full 2-
port calibrated measurements. Compared to standard R&S
ZNB4/8 analyzers, the
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 accurately measure 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
Optional Extensions and Accessories