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Rohde & Schwarz RF Power Meter and Sensors
NRP Series RF Power Meter and Power Sensors
The NRP RF and Microwave Power Meter is suitable for research and development, production and mobile service as well as the analysis of broadband modulation signals of third-generation mobile radio. In research applications, the NRP excels with high measurement accuracy and a dynamic range of 90 dB. This applies to broadband signals of any modulation, including RF bandwidths beyond 100 MHz for wireless LAN. The NRP base unit accommodates up to 4 sensor heads, and displays all four measurement results at the same time. Alternatively, the sensors can be connected directly to a PC via USB interface. Applications in manufacturing test also benefit from the instrument's high measurement speed, its ease of use, and remote controllability. The NRP is lightweight and robust, and operates over a wide temperature range. This makes the instrument an excellent choice also for installation, service and maintenance in the field.
Smart Sensor Technology™ - Plug and go!The accuracy of microwave power measurements depends on the sensor characteristics and is impacted by signal level, temperature and frequency. For the NRP, Rohde & Schwarz is using an approach it introduced years ago: all calibration data is stored directly in the sensor, which ensures high-precision measurements and minimizes operating errors. This eliminates the need for calibration before the measurement. After plugging in the sensor the measurement can be started immediately. The sensors can perform reliable measurements for an extended period of time and the recommended calibration interval is 2 years.
In the past, microwave power meters required different sensors to cover all applications: thermal, diode as well as peak power sensors. The sensors from the NRP family now make life much easier – in many cases, a single sensor can perform all necessary measurements: average power, burst power and time gating also on signals with high bandwidth and wide dynamic range. This capability is achieved with the innovative SMART SENSOR TECHNOLOGY™, a fused multiple-path architecture:
Power Sensor with USB Interface - Connect Directly to a PC
The sensors of the NRP-Z series are complete miniature power meters, and can be used alone without the NRP display unit. The sensors contain a CPU that controls the sensor, processes the measurement results and operates the interface. All measurement data and settings can be transmitted via an optional USB interface. This concept is being used for the first time in classic microwave power measurement.
Connecting the sensors directly to a PC is the most cost-effective method for high-precision power measurements, especially if a PC is used already for data acquisition and evaluation. This is commonly the case in production environments that include a process controller. Omitting the NRP display unit saves space in the rack and reduces costs. Service technicians will also appreciate this option since the power sensor is only 1.9 x 1.2 x 6.7 inches and can easily be operated from a laptop.
A software toolkit is required to control the NRP power sensors via a PC. This toolkit is supplied as standard with every NRP sensor. It includes a DLL (dynamic link library) for individualized use of the entire sensor functionality under Windows, and the Power Viewer, a virtual power meter with basic measurement functions for the PC workstation. The Power Viewer includes a subset of the functionality of the NRP base unit. The passive USB Adapter NRP-Z4 provides all basic functions. It handles the transmission of settings and measurement data as well as the power supply of the sensor. The active USB Adapter NRP-Z3 for applications requiring external triggering of the power sensor. It also offers a separate power supply.
Universal Display Unit
For applications requiring a basic unit, the NRP offers key advantages. It has a small size, and is lightweight and rugged. It can be fitted with one, two or four measurement inputs (Options NRP-B2 and NRP-B5). GPIB is standard as are trigger input and analog measurement output.
The user interface of the NRP power meter is controlled similarly to a PC via menu bars, menus and dialog boxes. All functions are grouped into only three menu levels, and the operating concept is self-explanatory. The high-resolution graphical display can show as many as four measurement results at the same time. The user can choose whether to display data from up to four different sensors, or from different timeslots of a TDMA signal measured by one sensor. Values obtained by calculation, such as SWR or return loss, can also be displayed.
NRP Display Unit Options:
Rohde & Schwarz NRP RF Power Meter includes Operating Manual, Power Cord, Fuses
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