Concepts and features
R&S
®
ZNB/ZNBT
265User Manual 1173.9163.02 ─ 62
4.7.26 USB-to-IEC/IEEE adapter
R&S ZVAB-B44
Hardware option R&S ZVAB-B44 (order no. 1302.5544.03) comprises an adapter and
driver software for controlling external devices via IEEE 488 / IEC 625 (GPIB). The
driver software is installed on the network analyzer. Connect the USB port of the
adapter to any of the master USB connectors on the front or rear panel of the analyzer.
Connect the GPIB port of the adapter to the external device.
This hardware option is required, if you want to use GPIB for controlling external devi-
ces from the R&S ZNB/ZNBT. The current B10 option does not offer this functionality.
To get the adapter to work, you have to install the NI VISA library on the R&S ZNB/
ZNBT.
4.7.27 External power meters
The connection of an external power meter to the R&S ZNB/ZNBT can serve different
purposes.
●
Extended measurement functionality: Each external power meter represents an
additional receive port. External power meters increase the number of RF input sig-
nals of a DUT that the analyzer can measure simultaneously. They can also pro-
vide accurate results for signals at inaccurate or unknown frequencies. A typical
example is a mixer measurement with an unknown LO signal (and therefore
unknown IF output frequency).
VNA
1 2
RF
LO IF
USB ports
Power meter / sensor
Control connection
(e.g. USB)
●
Power calibration: An external power meter can measure the exact signal power at
an arbitrary point in the test setup (reference plane) and thus provide the reference
values for a power calibration. A typical example is a source power calibration for
an arbitrary analyzer port.
Optional extensions and accessories
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