Program module "Firmware Update"
R&S NRP-Z28/-Z98
1170.8966.12 3.6
E-1
Program module "Firmware Update"
A detailed description of the program module for firmware updates is provided in the Service Manual.
Program module "Update S-Parameters"
Fundamentals
With the R&S NRP-Z28/-Z98 sensors, the influence of any twoport – e.g. an adapter – between the
sensor output and the DUT can be considered, allowing the power
P
actually fed to the DUT to be
calculated.
Fig. 3-1
Operation with twoport between sensor output and DUT
A precondition is that a complete set of s-parameter data of the twoport is available in the frequency
range in question. The set of calibration data of the sensor therefore includes a table with up to 1000
measurement frequencies. The real and the imaginary part as well as the uncertainty of the
s-parameters
11
s
,
12
s
,
21
s
and
22
s
are stored for each frequency.
Important
: The set of s-parameter data must be defined such that port 2 corresponds to the port on the
sensor end and port 1 to the port on the DUT end.
The measurement frequencies in the s-parameter table can be selected independent of the calibration
frequencies of the sensor, allowing the twoport frequency range of interest to be optimally covered. The
real and the imaginary parts are linearly interpolated between these measurement frequencies, thus
permitting phase changes of ±15
°
between neighboring measurement frequencies. Below the first and
above the last measurement frequency, the values of the first and the last measurement frequency are
used, respectively.
The NrpFlashup program (menu item
Update S-Parameters
) is used for loading the s-parameter table.
To ensure compatibility with a great number of network analyzers, NrpFlashup can process
measurement data files in S2P format. All standard frequency units (Hz, kHz, MHz, GHz) and display
formats (real and imaginary part, linear magnitude and phase, magnitude in dB and phase) are
supported. The only restriction is that a reference impedance of 50 must be used for the
s-parameters. Additional noise parameters in the measurement data file are ignored.
