R & S Power Meter System Sensors

No matter whether you work in the lab or in production - the Microwave Power Meter R&S NRP is always the right choice. The versatility of the novel Power Meter Series R&S NRP is due to the newly developed sensors. These sensors are intelligent standalone instruments that communicate with the base unit or a PC via a digital interface. The SMART SENSOR TECHNOLOGY™ now implemented for the first time, sets new standards in terms of universality and accuracy.

Insertion units are either plugged to the side of the NAS or connected via a 1.5 m long cable for measurements at test points that are difficult to reach. Each insertion unit contains its individual calibration data which are read by the NAS and considered in the measurement results.

GSM900/1800/1900 applications
Insertion Units NAS-Z6 and -Z7 measure the peak envelope power (PEP) of the clocked signal with due consideration of the timing laid down in the GSM specifications. The insertion units are ideal for measurements on mobile stations which according to definition are sending signals in only one of the eight timeslots. Transient overshoots of the signal bursts are eliminated by a signal-controlled circuit so that the forward and reflected power as well as the SWR can be correctly measured and indicated.

Standard applications
The standard Insertion Unit NAS-Z5 with its wide frequency range is suitable for almost any application and practically covers all commercial analog RT services including air navigation.

Shortwave applications
Insertion Units NAS-Z1 and -Z2 have been especially designed for the frequency range up to 30 MHz. NAS-Z2 is for powers up to 1200 W for use in long-range shortwave communication systems.

Terminated power measurements
For measurements on transmitters, a Termination NAZ10 or NAZ30 acting as a dummy antenna is connected to the output of the insertion unit.

NAS_/ Sensor specs.

Directional power meters are connected between source and load and measure the power flow in both directions. The power applied to the load and the reflection can thus be measured.

Compared to low-cost instruments, power meters like NRT provide a number of benefits: most importantly high measurement accuracy through excellent directivity and a measurement method that determines the average power like a thermal power meter.
The instruments thus provide correct measurement results even in case of modulation or in the presence of several carriers. Power Sensors NRT-Z feature low insertion loss, very good matching and excellent intermodulation characteristics: the signal to be measured is virtually unaffected, the sensor is fully transparent.

For mobile use, service, development, production and quality management

Digital sensor interface

Sensor operation directly on PC

Directional power meters are used to measure power and reflection under operational conditions. Typical applications are in installation, maintenance and monitoring of transmitters, antennas and RF generators in industrial and medical fields.

Sensors for NRT Meas. range AVG Meas. range PEP Frequency range

NRT-Z14¹ 6mW to 120 W 0.4 to 300W 25 MHz to 1 GHz

NRT-Z43¹ 0.007 to 30 W 0.1 to 75W 0.4 to 4 GHz

NRT-Z44¹ 0.03 to 120 W 0.4 to 300W 0.2 to 4 GHz

NAP-Z3³ 0.01 to 35 W - 25 to 1000 MHz

NAP-Z4³ 0.03 to 110 W - 25 to 1000 MHz

NAP-Z5³ 0.1 to 350 W - 25 to 1000 MHz

NAP-Z6³ 0.3 to 1100 W - 25 to 1000 MHz

NAP-Z7³ 0.05 to 200 W 0.5 to 200 W 0.4 to 80 MHz

NAP-Z8³ 0.5 to 2000 W 5 to 2000 W 0.2 to 80 MHz

NAP-Z9³ 0.3 mW to 1.1 W - 0.1 to 1 GHz

NAP-Z10^2,3 0.005 to 20 W 0.05 to 20 W 35 MHz to 1 GHz (model 02)
890 to 960 MHz (model 04)

NAP-Z11^2,3 0.05 to 200 W 0.5 to 200 W 35 MHz to 1 GHz (model 02)
890 to 960 MHz (model 04)

¹Can be connected to a PC with NRT-Z3 or NRT-Z4
²Model 04 for GSM 900
³Option NRT-B1 required

With its large variety of power sensors Rohde & Schwarz is able to provide the right tool for power measurements with NRVS, NRVD, URV35 and URV55 base units.

15 different types of power sensors in all cover the frequency range from DC to 40 GHz and the power range from 100 pW (−70 dBm) to 30 W (+45 dBm). In addition to thermal sensors, which are ideal as a high-precision reference for any waveform, diode sensors with a dynamic range of more than 80 dB are available.

The peak power sensors of the NRV-Z31/-Z32/-Z33 series allow power measurements on TDMA mobile phones to different digital standards as well as measurement of the peak power of pulsed or modulated signals.

NRV Sensor Specs.

The voltage sensors of the URV5-Z series are indispensable tools in RF and microwave laboratories, test departments and service. They cover a frequency range from 9 kHz to 3 GHz and thus close the gap between low-frequency voltage measurements and microwave power measurements.

Consequently they may be used for:

High-impedance DC and AC voltage measurements in noncoaxial circuits
Level measurements in 50 Ω lines
Terminated power measurements

Voltage sensors are the right tools for everyday use. They permit the measurement of voltages from 200 μV to 1000 V and of powers from 1 nW (−60 dBm) up to 200 W (+53 dBm).

URV / Sensor Specs