Rohde and Schwarz FSH13.23 – Handheld Spectrum Analyzer (9 kHz-13.6 GHz) with Tracking Generator, VSWR Bridge

Rohde and Schwarz FSH13.23 – Handheld Spectrum Analyzer (9 kHz-13.6 GHz) with Tracking Generator, VSWR Bridge

The R&S FSH is a handheld spectrum analyzer and – depending on the model and the options installed – a power meter, a cable and antenna tester and a two-port vector network analyzer. It provides the most important RF analysis functions that an RF service technician or an installation and maintenance team needs to solve daily routine measurement tasks. For example, it can be used for maintaining or installing transmitter systems, checking cables and antennas, assessing signal quality in broadcasting, radio communications and service, measuring electric field strength or in simple lab applications. The R&S FSH can perform any of these tasks quickly, reliably and with high measurement accuracy.

Weighing only 3 kg, the R&S FSH is a handy instrument. All frequently used functions have their own function keys and are within fingertip reach. The brilliant color display is easy to read even under poor lighting conditions, and it has a monochrome mode for extreme conditions.

The capacity of the R&S FSH battery enables uninterrupted operation for up to 4.5 hours. The battery is changed within seconds and all connectors are splash-proof.

Several models available

The Rohde and Schwarz FSH is available in a variety of formats, covering several frequency ranges and with multiple configurations of each. The chart below provides a brief overview of several main configuration options. Please see the attached brochure and specification sheet for more detailed information.

Altogether ten R&S FSH models for different applications and frequency ranges are available. The R&S FSH can perform measurements up to an upper frequency limit of 3.6 GHz, 8 GHz, 13.6 GHz or 20 GHz.

Models featuring a built-in tracking generator can also be used to determine the transmission characteristics of cables, filters, amplifiers, etc. Additional models with built-in tracking generator and internal VSWR bridge are available for distance-to-fault (DTF) measurements, matching measurements and vector network analysis.

Standard functions

This chart provides an overview of standard functions for the different FSH models.

1. RF input
2. Connector for headphones
3. Inputs
   • Ext. trigger input
   • Ext. reference input
   • IF output
   • Bias input
   • Connector for accessories
4. LAN/USB interface
5. Simple menu based operation via softkeys
6. Function keys
7. Kensington lock
8. Call-up of user-defined settings

9. Connector for power sensor
10. Tracking generator output
11. USB interface, type A
12. SD memory card
13. Color LCD (640 × 480 pixel), can be switched to high-contrast monochrome display in extreme sunlight
14. Selection between different operating modes (spectrum analyzer, vector network analyzer, power meter, etc.)
15. Selection of the measurement function (channel power, occupied bandwidth, etc.)
16. General instrument setup
17. Screenshot
18. Rotary knob with Enter button
19. Cursor keys

Please note, the sections below show only a portion of the FSH’s capabilities. ***Some of the testing methods shown below require additional software and are only possible with certain FSH models. Please click here for a breakdown of models, software options and compatibility. For more detailed information, please see the brochure in the documents section of this page.***

Installation and maintenance of transmitter stations

The R&S FSH is designed for the installation and maintenance of transmitter systems. It provides the following measurement functions:

Vector network analysis

The vector measurements option adds a built-in tracking generator and an internal VSWR bridge, transforming the R&S®FSH models into a two-port vector network analyzer. Matching and transmission characteristics of filters, amplifiers, etc. can be determined quickly and with high accuracy in the forward and reverse direction with only one test setup. The built-in DC bias supplies power to active DUTs, such as amplifiers, via the RF cable. This function is especially useful for mast-mounted amplifiers in a base station.

• Higher measurement accuracy due to vector system error correction
• Measurement of magnitude and phase of S-parameters S₁₁², S₂₁², S₁₂ and S₂₂
• Simultaneous display of magnitude and phase in split-screen mode
• Simultaneous display of four different S-parameters
• Smith chart with zoom function
• Support of all conventional marker formats
• Input of a reference impedance for DUTs with an impedance other than 50 Ω
• Electrical length measurement
• Determination of group delay
• Measurement of matching characteristic of the antenna (return loss, reflection coefficient or VSWR)³

² – Not applicable to R&S FSH13 and R&S FSH20
³ – Applicable only to R&S FSH models with built-in VSWR bridge (models .23/.24/.28/.30)

Measurement of Electromagnetic Fields

The R&S FSH can reliably determine the effects of electromagnetic fields (EMF) caused by transmitter systems.

Due to its large frequency range of up to 20 GHz, the R&S FSH covers all common wireless communications services, including GSM, CDMA, WCDMA, LTE, DECT, Bluetooth, WLAN (IEEE802.11a, b, g, n), WiMAX, broadcasting and television.

The R&S FSH is ideally suited for the following measurements:

• Determination of maximum field strength using directional antennas
• Direction-independent field strength measurements using an isotropic antenna
• Determination of electric field strength in a transmission channel with defined bandwidth (channel power measurement)

Field strength measurements with directional antennas

When measuring electric field strength, the R&S FSH takes into account the specific antenna factors of the connected antenna. The field strength is displayed directly in dBμV/m. If W/m2 is selected, the power flux density is calculated and displayed. In addition, frequency-dependent loss or gain, e.g. of a cable or amplifier, can be corrected. For simple result analysis, the R&S FSH provides two user-definable limit lines with automatic limit monitoring.

Field strength measurements with isotropic antennas

Equipped with the isotropic antennas of the R&S TS-EMF measurement system, the R&S FSH can determine the direction-independent resultant field strength in the frequency range from 9 kHz to 6 GHz. The antenna includes three orthogonally arranged antenna elements for measuring the resultant field strength. The R&S FSH sequentially activates the three antenna elements and calculates the resultant field strength, taking into account the antenna factors for each antenna element as well as the cable loss of the connection cable.

The R&S FSH with isotropic antennas

The R&S FSH with the R&S®HE400 antenna