The Rohde & Schwarz FSEA20 is a high-performance spectrum analyzer from the FSE Series, engineered for both general-purpose RF testing and the rigorous demands of analyzing digitally modulated signals. Covering a frequency range from 9 kHz to 3.5 GHz, it offers extremely high sweep speeds down to 1 µs, tight resolution bandwidths down to 10 Hz (expandable to 1 Hz with options), and a modular architecture that ensures future-proof adaptability in laboratory and manufacturing environments.

Specifications

Frequency Specifications

ParameterValue
Frequency Range9 kHz to 3.5 GHz
Frequency Span Range0 Hz (zero span), 10 Hz to 3.5 GHz
Spectral Purity / Phase Noise<-113 dBc/Hz at 10 kHz offset (1 GHz carrier)

Bandwidth (RBW/VBW) Specifications

ParameterValue
Resolution Bandwidth (RBW) Range10 Hz to 10 MHz
Resolution Bandwidth (RBW) Steps1, 2, 3, 5
Video Bandwidth (VBW) Range1 Hz to 10 MHz
VBW Filter Steps1, 2, 3, 5
FFT Filter Bandwidths1 Hz to 10 Hz (with Option FSE-B7)

Amplitude Specifications

ParameterValue
Amplitude Measurement RangeDANL to +30 dBm
Input Attenuator Range0 dB to 70 dB
Input Attenuator Steps10 dB

Inputs and Outputs

ParameterValue
RF Input Connector TypeN female
RF Input Impedance50 Ω
External Reference Input Frequency10 MHz
IF Output Frequency21.4 MHz

Measurement Functions & Software

ParameterValue
Demodulation CapabilitiesAM and FM
Trace DetectorsMax Peak, Min Peak, Auto Peak, Sample, RMS, Average
Adjacent Channel Power (ACP) MeasurementSupported
Occupied Bandwidth (OBW) MeasurementSupported

Display and User Interface

ParameterValue
Disk Drive3.5 inch, 1.44 MB floppy disk

Inputs & Outputs

ParameterValue
Noise Source Drive Output28 V DC, BNC female (rear panel)
Probe Power Output+15 V DC, -12.6 V DC, max. 150 mA

Interfaces

ParameterValue
GPIB Interface ProtocolSCPI / IEEE 488.2
External Monitor Port15-pin D-Sub (VGA)
External Keyboard Connector5-pin DIN (rear panel)

Connectivity

ParameterValue
Serial Interface PortRS-232 (9-pin D-Sub)
User Port Interface25-pin D-Sub (for external switch and control signals)

Options

ParameterValue
Vector Signal Analysis OptionFSE-B7 (adds 1.6 MHz bandwidth I/Q demodulator)
Tracking Generator 3.5 GHz OptionFSE-B8
Tracking Generator with I/Q Modulator OptionFSE-B9 (9 kHz to 3.5 GHz)

Technology

Superheterodyne Spectrum Analysis

Applications

RF & Microwave Testing, Digital Communications, Spectrum Analysis