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 NRPxxT(N)/TWG 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 sophisticated measurement cell of the R&S NRPxxT(N)/TWG thermal power sensors quickly attains a stable temperature. When the power level is decreased, the excess heat is dissipated extremely quickly. Consequently, 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.

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.

Internal calibration test

Rohde & Schwarz has implemented a special verification function in the NRPxxT(N) sensor. 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.

Connecting the sensor to your computer or instrument

These power sensors can use various, detachable cables for connection to diverse display units. A screw connection is provided on the sensor end to prevent accidental loosening of the cable.

The R&S NRP-ZKU USB interface cable can be used to connect a power sensor to a laptop/PC via the USB interface. This is an extremely space-saving and also cost-efficient solution that does not require a base unit. Two software tools - R&S Power Viewer Plus and R&S NRPV virtual power meter - are available to simplify sensor operation from a laptop/PC. These tools support all measurement functions implemented in the sensors.

The R&S NRP-ZK6 interface cable is intended for operating a power sensor on the R&S NRX base unit. It can also be used to connect the power sensor to diverse Rohde & Schwarz signal generators and signal and spectrum analyzers to enhance these instruments with a high performance power meter.

Please note, the NRP-ZKU and NRP-ZK6 are sold separately.

*The image is for reference only. See product specification for details.