R&S®NRP-Z56 Thermal Power Sensor

Most accurate power measurements for reference applications and use in calibration labs

This is a discontinued product
Please note the following successor product(s):
Outstanding performance for reference applications

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-Z5x 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 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.

R&S®NRP-Z5x thermal power sensors.
Excellent impedance matching

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.

Sophisticated connector concept

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.

Internal calibration test

Rohde & Schwarz has implemented a special verification function in the R&S®NRP-Z52/R&S®NRP-Z55/R&S®NRP-Z56/R&S®NRP-Z57/R&S®NRP-Z58 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.

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