Rohde and Schwarz FSHZ14 Directional Power Sensor, 1 GHz

The Rohde & Schwarz FSHZ14 is a directional power sensor that extends the measurement capabilities of Rohde & Schwarz FSH series handheld spectrum analyzers. It enables simultaneous measurement of forward and reflected power, allowing engineers to assess transmitter antenna output power and impedance matching under live operating conditions. The sensor connects via a special serial interface to the FSH base unit, which processes analog and digital signals to deliver corrected measurement values.

Technical Specifications

• Frequency Range: 25 MHz to 1 GHz


• Power Measurement Range: 30 mW to 300 W (average power: CW, FM, PM, FSK, GMSK; modulated signals: 30 mW to 300 W/CF)


• Peak Envelope Power (PEP): Up to 300 W


• Power Handling Capacity: 100 W to 1000 W (temperature and matching dependent)


• VSWR (50 Ω reference): < 1.06


• Insertion Loss: 30 dB


• Connector: N female, 50 Ω


• Power Source: Supplied via serial interface from FSH base unit

Key Features

• Simultaneous forward and reverse power measurement


• Return loss and VSWR calculation from forward/reverse power ratio


• Support for CW, FM, PM, FSK, GMSK, and modulated signal types


• Directional arrow marking ensures correct load-facing orientation


• Integrated analog and digital signal processing modules


• Corrected digital output to base unit

Typical Applications

• Antenna matching and impedance verification during field operation


• Transmitter output power validation under real-world conditions


• Return loss and standing wave ratio measurement


• GSM/EDGE, 3GPP WCDMA, cdmaOne, CDMA2000® 1x, DVB-T, and DAB system testing

Compatibility & Integration This sensor integrates exclusively with Rohde & Schwarz FSH handheld spectrum analyzers via dedicated serial interface. No external power supply required.