R&S NRP2, User Manual

Page: 117 / 437

Instrument Functions
R&S
®
NRP2
99 User Manual 1173.9157.02 ─ 03
Fig. 4-30: List of functions
Impedance measurements "SWR", "RCoeff" and "RLoss"
If you work with the functions for the impedance measurement, i.e. "SWR", "RCoeff" and
"RLoss", note that the incident power must be measured in the primary channel and the
reflected power in the secondary channel.
Continuous Average and Burst Average power measurements
If Continuous Average and Burst Average power measurements have been selected for
the channels that are used as arguments for the measurement function of the "Function
& Unit" dialog box, no additional settings are required to define the measurand. Setting
the unit and defining auxiliaries doesn't affect the measurement itself but tailors the mea-
surement result in such a way that it is convenient for the user.
"Trace & Statistics" mode and "Graph" results window
If the primary channel is operating in the "Trace & Statistics" mode and the results window
is set to "Graph", the envelope power of this channel is automatically shown as a function
of time or in its distribution and distribution density function ("CCDF", "CDF", "PDF"). In
this case, it is not possible to select another measurement function.
Function
The list of functions itemizes all the measurement functions provided by the R&S NRP2.
Any of the four channels can be assigned primary or secondary channel.
The available units depend on the selected function, see tables
​
4-3 ,
​
4-4 ,
​
4-5, 107 .
For example, in trace mode, only "Single (A)" and "Ratio (A/B)" are available, and in
statistics mode only one channel is available, which corresponds to "Single (A)".
"Single (A)" Power in the primary channel
"Ratio (A/B)" Ratio of the power in the primary channel to the power in the secondary
channel.
"SWR (A,B)" Standing wave ratio.
"RCoeff (A,B)" Reflection coefficient.
"RLoss (A,B)" Return loss.
"Diff (A-B)" Power difference between the primary and secondary channel.
"Sum (A+B)" Sum of power in primary and secondary channel.
Configuring measurements