
Concepts and features
R&S
®
ZND
218
User Manual 1173.9557.02 ─ 61
4.7.19
External power meters
The connection of an external power meter to the R&S
ZND can serve different purpo-
ses.
●
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
www.allice.de
Allice Messtechnik GmbH