Concepts and Features
R&S
®
ZNA
227
User Manual 1178.6462.02 ─ 12
5.7.24
Direct Source Monitor Access
R&S
ZNAxx-B161/163
For instruments that are equipped with
monitor options give access to the unattenuated generator signals of port 1 and 3. The
signal does not have to pass the respective source step attenuator, which is particu-
larly useful for measurements requiring a very low stimulus power, such as high gain
(converter) measurements. Taking the "attenuated" signal as the reference signal
would result in very noisy results, so it is recommended to use the monitor signal as
the reference signal in this case.
●
Option R&S
ZNAxx-B161 provides direct access for port 1 of a R&S
ZNAxx.
●
Option R&S
ZNAxx-B163 is available for 4-port models only. It provides direct
access for port 1
and
port 3.
Direct source monitor access is only available for instruments with
. The unattenuated source signal is available via monitor ports below
the respective direct access connectors. Simply by rejumpering the direct access ports
from "Ref Out → Ref In" to "Src Mon Out → Ref In", the monitor signal can be used as
the reference signal:
Source
Ref
Meas
Src
Mon
Out
Out
In
Src
Step
Att
Rec
Step
Att
Port
In
Out
Ref
Source Meas
Out
Out
In
In
Port y
Src Mon Out
Figure 5-27: Standard B16 jumpering
Optional Extensions and Accessories
