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Power Meter and Power Sensors

Source: Rohde & Schwarz GmbH & Co. KG

R&S®NRP2 Power Meter

Fast. Accurate. USB-capable. Power sensors from Rohde & Schwarz

The most important features for accurate and simple power measurements are maximum measurement accuracy and speed, and easy operation with a base unit or PC/laptop.  The R&S®NRP family combines all these features with the R&S®NRP2 base unit, R&S®NRPV virtual power meter PC software and a wide range of USB-capable power sensors.

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Rohde & Schwarz offers an extensive portfolio for power measurements from DC to 67 GHz, from –67 dBm to +45 dBm, including:

  • Three-path diode power sensors with 90 dB dynamic range
  • Wideband power sensors for performing accurate envelope power analysis
  • Thermal power sensors for maximum accuracy
  • Level control sensors and power sensor modules for special applications

The R&S®NRP power sensors can be connected to a laptop or PC via USB and controlled via the R&S®NRPV virtual power meter PC software. Up to four power sensors can be operated in parallel with a R&S®NRP2 base unit. They are also supported by virtually all Rohde & Schwarz signal generators and signal, spectrum and network analyzers.

Depending on the application, the focus of power measurements is either on measurement accuracy, measurement speed or the optimal combination of both. R&S®NRP family offers the best characteristics on the market for all applications.

R&S®NRP2 Power Meter

The compact, robust R&S®NRP2 base unit with color display supports up to four R&S®NRP-Zxx power sensors and all sensor-dependent measurement functions. Measured values are displayed numerically or graphically, depending on the measurement function. The window-based user interface allows simple, intuitive operation; the base unit can be remotely controlled via Ethernet, GPIB or USB.

Key Facts

  • Supports all sensor-dependent measurement functions
  • Expandable to up to four measurement channels
  • Straightforward numerical and graphical display
  • Brilliant TFT color display
  • Optionally integrated 50 MHz/1 mW reference source
  • Hardware interfaces for remote control and triggering
  • Emulation of other legacy power meter
  • User-programmable save/recall locations

R&S®NRP-Z Power Sensors

For operation with R&S®NRP2 base unit or via USB on a Laptop/PC

Rohde & Schwarz offers a comprehensive portfolio of power sensors including multi-path sensors, thermal sensors, wideband sensors and sensors for special applications. The individual sensors differ in terms of dynamic range, measurement accuracy and measurement functionality.

Key Facts

  • Three-path diode power sensors: fast, accurate and packed with features for CW and modulated signals
  • Wideband power sensors: time domain analysis and automatic pulse analysis for radar applications and universal use
  • Thermal power sensors: most accurate power measurements for reference applications and use in calibration labs
  • Two-path diode power sensors: cost efficient power measurement solution for production
  • Average power sensors: accurate average power measurement for EMC applications
  • Level control sensors: highly accurate signal level generation in conjunction with a signal generator
  • Power sensor module: level calibration of signal sources in conjunction with the R&S®FSMR measurement receiver
  • Versatile measurement functions
  • Simply plug-in and measure
  • Minimize measurement uncertainty
  • Enhanced auto-averaging filter
  • Easy system integration
  • Multiple ways to operate R&S®NRP-Zxx sensors

Product Brochure: Power sensors from Rohde & Schwarz

Product Brochure: R&S®NRP Power Meter Family

Data Sheet: R&S®NRP Power Meter Measurement Range and Frequency Range Overview

The Better Choice: USB Power Sensors from Rohde & Schwarz

Three-Path Diode Power Sensors

Three-path diode power sensors R&S®NRP-Z11/R&S®NRP-Z2x/R&S®NRP-Z3x are suitable for numerous applications because they support continuous average, burst average, timeslot average, gate average and trace measurements.

Featuring outstanding performance and high measurement speed and accuracy, the sensors can be used to perform precise average power measurements on modern wireless standard signals such as LTE, 3GPP, GSM, WiMAX™ and WLAN. For detailed analysis of GSM signals, for example, the sensors offer additional measurement functions such as the timeslot mode and trace mode with a video bandwidth of 100 kHz.

Key Facts

  • Operation with R&S®NRP2 base unit or via USB on a Laptop/PC
  • 90 dB dynamic range for CW and modulated signals
  • Innovative three-path diode power sensor with enhanced inter-range performance
  • Continuous average, burst average, timeslot average, time gating and trace mode supported (video bandwidth 100 kHz)
  • Automatic burst detection and acquisition
  • Up to 1500 measurements/s (buffered mode)
  • Low sensitivity to harmonics

Product Brochure: R&S®NRP Power Meter Family

Two-Path Diode Power Sensors

The R&S®NRP-Z211/R&S®NRP-Z221 two-path sensors with slightly modified dynamic range and performance are ideal for production applications.

The R&S®NRP-Z211/R&S®NRP-Z221 two-path diode power sensors combine all key characteristics relevant for their use in production: They are cost-effective, fast, precise and USB-capable. The sensors support the same measurement functions as the R&S®NRP‑Z11/R&S®NRP‑Z2x/R&S®NRP‑Z31 three-path diode power sensors and offer the best price/performance ratio in their class.

The two-path diode power sensors use the tried-and-tested technology of the three-path diode power sensors. With two overlapping diode paths measured in parallel and a wide dynamic range of 80 dB, the power sensors feature high measurement accuracy and speed.

Key Facts

  • Best price/performance ratio in its class
  • Operation with R&S®NRP2 base unit or via USB on a Laptop/PC
  • 80 dB dynamic range for CW and modulated signals
  • Two-path diode power sensor with enhanced inter-range performance
  • Continuous average, burst average, timeslot average, time gating and trace mode supported (video bandwidth 50 kHz)
  • Automatic burst detection and acquisition

Product Brochure: R&S®NRP Power Meter Family


Thermal Power Sensors

The R&S®NRP-Z5x thermal power sensors feature outstanding measurement accuracy and are the first choice for power measurements in the frequency range from DC to 110 GHz as performed in calibration labs, where measurement accuracy is the key requirement.

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. These sensor characteristics are particularly beneficial in reference applications and calibration labs.

Key Facts

  • Operation with R&S®NRP2 base unit or via USB on a Laptop/PC
  • Outstanding linearity of 0.007 dB (0.16%)
  • Industry-proven DC-coupled thermoelectric test cell
  • Sophisticated connector design
  • Excellent impedance matching

Product Brochure: R&S®NRP Power Meter Family

Wideband Power Sensors

Due to their high video bandwidth, the R&S®NRP-Z8x wideband power sensors permit accurate time-domain analysis of the envelope power. Analysis is fast and easy thanks to additionally integrated measurement functions such as automatic pulse analysis.

The R&S®NRP-Z8x wideband power sensors are ideal for radar applications. In development or during installation and maintenance, pulse characteristics as well as output power have to be measured. Similar measurements are required in the production of radar systems and radar components. Thanks to a maximum video bandwidth of 30 MHz and a rise/fall time < 13 ns, the sensors can measure pulses with a pulse width as small as 50 ns.

Key pulse parameters are determined automatically to simplify the measurement and prevent operating errors. By increasing the sampling rate, the high-resolution mode for repetitive signals permits the display of strongly magnified signal sections with a high graphical resolution.

Key Facts:

  • Operation with R&S®NRP2 base unit or via USB on a Laptop/PC
  • Ideal for radar applications
  • 30 MHz video bandwidth
  • Rise/fall time <13 ns
  • > 9500 measurements/s (buffered mode)
  • Automatic pulse analysis
  • Statistical analysis
  • High resolution mode
  • Trigger master mode

Product Brochure: R&S®NRP Power Meter Family

Average Power Sensors

The R&S®NRP-Z91/R&S®NRP-Z92 average power sensors were specially developed for EMC applications and cover the required frequency range from 9 kHz to 6 GHz.

In EMC applications, usually only the average power is of interest. This is where the R&S®NRP-Z91/R&S®NRP-Z92 average power sensors are the perfect fit. They cover measurement ranges that are used in radio telecommunications (up to 6 GHz) as well as the important lower frequency bands (down to 9 kHz). Users benefit from the excellent properties of the three-path diode power sensors, including a dynamic range of up to 90 dB, very low influence of the modulation on the measurement and outstanding impedance matching.

Key Facts:

  • Specially designed for EMC applications
  • Measurement of continuous average power
  • 90 dB dynamic range for CW and modulated signals
  • Low sensitivity to harmonics

Product Brochure: R&S®NRP Power Meter Family

Level Control Sensors

The R&S®NRP-Z28/R&S®NRP-Z98 level control sensors were developed especially to feed power to the DUT and monitor the power at the same time.

Key Facts:

  • Integrated one-box solution for classic power splitter/power sensor combination
  • Special directional power sensor with integrated power splitter
  • For applications requiring a precisely known level to be fed in (e.g. calibration of measuring receivers)
  • Improvement of the absolute level accuracy of signal generators

Product Brochure: R&S®NRP Power Meter Family

Power Sensor Module

The R&S®NRP-Z27/R&S®NRP-Z37 power sensor module turns the R&S®FSMR measuring receivers into precision power meters with a wide dynamic range from –115 dBm to +30 dBm.

Key Facts:

  • Power sensor with additional RF signal output
  • Developed for use with the R&S®FSMR measuring receiver
  • For precise calibration of T & M equipment

Product Brochure: R&S®NRP Power Meter Family

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