Overview
The EMC Shop is an ISO 17025 accredited calibration company with Rohde & Schwarz power sensors in stock available for sale or rental. Repair and refurbishment services available as well. Contact us now for application support.
Thermal power sensors are especially used for complex measurement tasks where highest accuracy counts. They
tolerate any type of modulation. To improve measurement accuracy, the hardware of the R&S®NRP-Z51 thermal power sensors is designed to reduce measurement noise to a minimum and to make the sensor immune to thermal environmental effects.
To achieve stable measurement results, the temperature in the thermal test cell must correspond to the applied power. When the power is increased, the measurement cell of the R&S®NRP-Z5x thermal power sensors quickly attains a stable temperature. When the power level is decreased, the excess heat is dissipated extremely quickly. Thermal power sensors from Rohde&Schwarz are able to measure three times faster than comparable solutions on the market with triggered measurements and > 500 measurements/s in buffered mode – with top accuracy.
The R&S®NRP-Z5x thermal power sensors feature an unparalleled linearity of 0.007 dB (0.16 %) up to 67 GHz
and 0.010 dB (0.23%) between 67 GHz and 110 GHz, making them the ideal choice for performing relative
measurements. These sensor characteristics are particularly beneficial in reference applications and calibration labs.
To a large extent, measurement uncertainty results from multiple reflections at the source and power sensor
caused by mismatch. To minimize these reflections, all thermal power sensors in the R&S®NRP family are excellently matched up to high frequencies, reducing measurement uncertainty.
Thanks to the innovative connector design, the sensor can be easily screw-connected to the signal source to be
measured. A ball bearing in the coupling nut ensures that only the coupling nut has to be turned to tighten the sensor. The sensor body stays fixed in the required position.
Contrary to conventional connecting screws, the outer conductors of the sensor and DUT are not turned relative
to each other and so their mating surfaces do not rub together. This reduces wear and enhances reproducibility of
measurements. The connector concept contributes to high measurement accuracy.
Rohde&Schwarz has implemented a special verification function in the R&S®NRP-Z5x sensors. This function covers
all essential components of the signal path. Using a test routine, the sensor’s response to a highly stable applied
DC power is measured and compared against the value stored during the previous calibration. The result provides
information about the functionality and accuracy of the power sensor. Two additional advantages: The power sensor can remain on site during verification, and verification can even be performed while another measurement is carried out.
