The Rohde & Schwarz FSWP26 is a high-performance Phase Noise Analyzer and VCO Tester, operating in the frequency range from 1 MHz to 26.5 GHz. Highly regarded for its exceptional sensitivity and fast measurement speed, it integrates phase noise and VCO testing capabilities with an optional high-end signal and spectrum analyzer, making it a versatile tool for radar, aerospace, defense, and high-performance synthesizer design applications.

Specifications

General

ParameterValue
Display12.1-inch WXGA color TFT touchscreen (1280 × 800 pixels)

Physical

ParameterValue
Power Supply100 V to 240 V AC (±10%), 50 Hz to 60 Hz / 400 Hz (±5%), typical 120 W (up to 400 W with options)
Dimensions (W×H×D)444 mm × 240 mm × 517 mm (without handles)
Weight21.0

Frequency

ParameterValue
Frequency Range1 MHz to 26.5 GHz
Frequency Resolution0.01 Hz
External Reference Input Frequency1 MHz to 20 MHz (in 1 Hz steps)
External Reference Output Frequency10 MHz

Phase Noise Measurement

ParameterValue
Phase Noise Offset Frequency Range1 mHz to 1 GHz
Maximum Number of Cross-Correlations1,000,000

VCO Tester DC Sources

ParameterValue
Tuning Voltage Range-10 V to +28 V
Tuning Voltage Resolution0.1 mV
Tuning Voltage Maximum Current20 mA
Supply Voltage Range 10 V to 16 V
Supply Voltage Range 20 V to 16 V

RF Input

ParameterValue
RF Input Impedance50 Ω
RF Input Connector Type3.5 mm female
Maximum RF Input Level (with attenuation)+30 dBm (1 W)
Maximum DC Input Voltage0 V (DC coupled)
Input VSWR (f < 3 GHz)< 1.2
Input VSWR (3 GHz to 8 GHz)< 1.3
Input VSWR (8 GHz to 26.5 GHz)< 1.8

Noise Source Drive & Calibration

ParameterValue
Noise Source Drive Voltage28 V DC (switchable)
Noise Source ConnectorBNC female (rear panel)
Smart Noise Source SupportYes (with R&S FS-SNS support)

Spectrum Analyzer (Option R&S FSWP-B1)

ParameterValue
Option B1 Frequency Range10 Hz to 26.5 GHz
Option B1 Resolution Bandwidths (RBW)1 Hz to 10 MHz
Option B1 Displayed Average Noise Level (DANL, 1 GHz, 1 Hz RBW)<-152 dBm (typ. -156 dBm)
Option B1 Third-Order Intercept (TOI, 1 GHz)> +20 dBm (typ. +25 dBm)

General & Environmental

ParameterValue
Operating SystemWindows 10 IoT Enterprise
Internal StorageRemovable Solid State Drive (SSD)
Storage Temperature Range-40 °C to +70 °C
Operating Humidity Limits95% relative humidity (non-condensing)
Recommended Calibration Interval1 year

Connectivity

ParameterValue
USB 2.0 Ports2 (front)
USB 3.0 Ports2 (rear)
LAN Port1 × RJ-45 (10/100/1000Base-T)
External Display Ports1 × DVI-D, 1 × DisplayPort
Reference Input ConnectorBNC female
Reference Output ConnectorBNC female
Trigger Input/Output ConnectorsBNC female

Power & Physical

ParameterValue
AC Input Voltage Range100 V to 240 V AC (±10%)
AC Input Frequency Range50 Hz to 60 Hz / 400 Hz
Maximum Power Consumption250 W
Base Power Consumption (typical)120 W
Weight (Base Instrument)21.0 kg (46.3 lb)
Rackmount Height Units5 U

VCO Measurements

ParameterValue
Tuning Voltage Accuracy±(0.05% + 2 mV)
Supply Voltage Accuracy±(0.1% + 10 mV)

Reference Frequency

ParameterValue
OCXO Aging per Year±3 × 10⁻⁸ (with Option B4)
OCXO Temperature Stability (0 °C to +50 °C)±1 × 10⁻⁹ (with Option B4)
Standard Reference Frequency Aging per Year1 × 10^-6
Standard Reference Temperature Stability (0 °C to +50 °C)1 × 10^-6
Option B4 OCXO Aging per Day1 × 10^-10

Spectrum Analyzer

ParameterValue
Signal Analysis Bandwidth (Standard)10 MHz (with Option B1)
Signal Analysis Bandwidth (Maximum)up to 80 MHz (Option B80) / 320 MHz (Option B320)

AM Noise Measurements

ParameterValue
AM Noise Carrier Frequency Range1 MHz to 26.5 GHz
AM Noise Offset Frequency Range1 Hz to 30 MHz

Additive Phase Noise

ParameterValue
Internal Test Source Frequency Range10 MHz to 26.5 GHz (with Option B21 and Option B64)

Pulsed Phase Noise Measurements

ParameterValue
Pulsed Phase Noise Carrier Frequency Range10 MHz to 26.5 GHz (with Option K4)

Noise Figure Measurements

ParameterValue
Noise Figure Measurement Frequency Range10 MHz to 26.5 GHz (with Option K30 and Option B1)

Environmental

ParameterValue
Maximum Operating Altitude3000 m
Maximum Storage Altitude4600 m
Vibration (Random)1.2 g RMS (10 Hz to 300 Hz)

VCO Parameter Measurements

ParameterValue
Tuning Voltage Noise Density0.5 nV/√Hz (typical, at 10 kHz offset)
Supply Voltage Noise Density0.5 nV/√Hz (typical, at 10 kHz offset)

Noise Figure Measurements (Option K30)

ParameterValue
Noise Figure Measurement Range0 dB to 35 dB (option dependent)
Noise Figure Gain Measurement Range-10 dB to +50 dB (option dependent)

Spectrum Analyzer (Option B1)

ParameterValue
Option B1 FFT Filter Bandwidth Range1 Hz to 3 MHz

Transient Measurements (Option K60)

ParameterValue
Transient Analysis BandwidthTransient Analysis Bandwidth = 80 MHz (standard), up to 8 GHz (with option R&S®FSWP-B8000)

Interfaces

ParameterValue
LXI ComplianceLXI Version 1.4 Core Device

Technology

Phase Noise Analysis & VCO Testing

Applications

Aerospace, Defense, Radar, Wireless Communications, Synthesizer Design