The Rohde & Schwarz FSU50 is a high-performance spectrum and signal analyzer designed for demanding RF and microwave measurements. Covering a frequency range from 20 Hz to 50 GHz, it offers exceptional dynamic range, extremely low phase noise, and highly accurate level measurements. It is optimized for next-generation wireless communications development, aerospace and defense, and general-purpose high-frequency testing.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE 488.2), LAN (10/100 Base-T), USB 2.0, RS-232, VGA, LPT, PS/2 |
| Display | 8.4-inch color TFT LCD (SVGA, 800 x 600 pixels) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 V to 240 V AC, 50 Hz to 400 Hz, typ. 150 W |
| Operating Temperature | 5 to 40 |
| Dimensions (W×H×D) | 435 mm x 192 mm x 460 mm |
| Weight | 23 |
Frequency
| Parameter | Value |
|---|---|
| Frequency Range | 20 Hz to 50 GHz |
| Internal Reference Frequency | 10 MHz |
| Reference Frequency Aging per Year | 1 x 10^-7 |
| Reference Frequency Aging per Year (with Option B4) | 2 x 10^-8 |
| Frequency Span Range | 0 Hz (zero span), 10 Hz to 50 GHz |
| Frequency Resolution | 0.01 Hz |
| Phase Noise at 10 kHz Offset | -123 dBc/Hz (at 640 MHz carrier) |
| Phase Noise at 100 kHz Offset | -124 dBc/Hz (at 640 MHz carrier) |
| Phase Noise at 1 MHz Offset | -145 dBc/Hz (at 640 MHz carrier) |
Bandwidths
| Parameter | Value |
|---|---|
| Resolution Bandwidths (3 dB) | 1 Hz to 10 MHz (in 1, 2, 3, 5 steps), 20 MHz, 50 MHz |
| FFT Filter Range | 1 Hz to 30 kHz |
| Channel Filter Range | 100 Hz to 5 MHz (39 filters) |
| RRC Filters | NADC, TETRA, 3GPP |
| EMI Filters (6 dB) | 200 Hz, 9 kHz, 120 kHz, 1 MHz |
| Video Bandwidths | 1 Hz to 10 MHz |
| Shape Factor (60 dB / 3 dB) | < 4.6 (analog filters) |
Amplitude & Level
| Parameter | Value |
|---|---|
| Maximum Safe Input Level (CW) | +30 dBm (1 W) |
| Maximum DC Input Voltage | 0 V (DC coupled) |
| 1 dB Compression Point | +13 dBm (at 0 dB RF attenuation) |
| Displayed Average Noise Level (DANL) at 1 GHz | -158 dBm (1 Hz RBW) |
| Displayed Average Noise Level (DANL) at 50 GHz | -130 dBm (1 Hz RBW) |
| Third-Order Intercept (TOI) | typ. +25 dBm (at 2 GHz) |
| Total Measurement Uncertainty | 0.3 dB at 640 MHz |
| Input Attenuator Range | 0 to 75 dB |
| Attenuator Step Size | 5 dB |
| Input VSWR (f < 3.6 GHz) | < 1.2 |
| Input Impedance | 50 Ohm |
Sweep & Acquisition
| Parameter | Value |
|---|---|
| Sweep Time Range (Span > 0 Hz) | 2.5 ms to 16000 s |
| Sweep Time Range (Zero Span) | 1 microsecond to 16000 s |
| Sweep Time Accuracy (Zero Span) | 0.1% |
| Number of Sweep Points | 155 to 30001 (user-selectable) |
| Sweep Modes | Continuous, Single |
| Measurement Speed | Up to 70 measurements/s (via GPIB, including trace transfer) |
| Trigger Sources | Free Run, Video, External, Line, IF Power |
Measurement & Demodulation
| Parameter | Value |
|---|---|
| Detector Types | Max Peak, Min Peak, Auto Peak, Sample, RMS, Average, Quasi-Peak |
| Number of Traces | 3 |
| Trace Functions | Clear/Write, Max Hold, Min Hold, View, Blank, Average |
| Standard Measurement Routines | TOI, MC ACP(R), OBW, CCDF, APD |
| Demodulation Capability | AM, FM, PM |
Inputs & Outputs
| Parameter | Value |
|---|---|
| RF Input Connector | 2.4 mm female |
| External Reference Input | 10 MHz (BNC, female) |
| Reference Output | 10 MHz (BNC, female) |
| External Trigger Input | BNC, female |
| VGA Monitor Port | 15-pin D-Sub |
| LPT Parallel Port | 25-pin D-Sub |
| Serial Port | 9-pin RS-232 |
| Keyboard/Mouse Ports | PS/2 |
| Probe Power Supply Connector | 5-pin (+15 V, -12.6 V, Ground) |
| GPIB Interface | IEEE 488.2 (SCPI compatible) |
| LAN Interface | 10/100 Base-T (RJ-45) |
| USB Interface | USB 2.0 (Host) |
| IF Output Frequency | 21.4 MHz |
Physical & Environmental
| Parameter | Value |
|---|---|
| Display Type | 8.4-inch color TFT LCD |
| Display Resolution | 800 x 600 pixels (SVGA) |
| Operating Temperature Range | +5 °C to +40 °C |
| Storage Temperature Range | -40 °C to +70 °C |
| Power Supply Voltage | 100 V to 240 V AC, 50 Hz to 400 Hz |
Hardware & Software Options
| Parameter | Value |
|---|---|
| High Stability OCXO Option | Option FSU-B4 |
| Tracking Generator Options | Option FSU-B9 (3.6 GHz) / Option FSU-B12 (26.5 GHz) |
| External Mixer Support Option | Option FSU-B21 |
| Preamplifier Option (up to 50 GHz) | Option FSU-B24 |
| Electronic Attenuator Option | Option FSU-B25 |
| GSM/EDGE Measurement Application | Option FS-K5 |
| Bluetooth Measurement Application | Option FS-K8 |
| Noise Figure Measurement Application | Option FS-K30 |
| Phase Noise Measurement Application | Option FS-K40 |
| WCDMA Measurement Application | Option FS-K72 |
RF Performance
| Parameter | Value |
|---|---|
| Input VSWR (3.6 GHz to 8 GHz) | < 1.5 |
| Input VSWR (8 GHz to 26.5 GHz) | < 1.8 |
| Input VSWR (26.5 GHz to 50 GHz) | < 2.0 (up to 46 GHz), < 2.5 (up to 50 GHz) |
| Third-Order Intercept (TOI) (3.6 GHz to 26.5 GHz) | > 17 dBm (typ. +22 dBm) |
| Third-Order Intercept (TOI) (26.5 GHz to 50 GHz) | > 13 dBm (typ. +18 dBm) |
| Second Harmonic Intercept (SHI) (f < 1.8 GHz) | > 45 dBm (typ. +55 dBm) |
| Absolute Level Uncertainty (at 128 MHz) | < 0.15 dB |
| Logarithmic Display Range | 1 dB to 150 dB |
Reference Frequency
| Parameter | Value |
|---|---|
| Reference Input Frequency Range | 1 MHz to 20 MHz (in 1 MHz steps) |
| Reference Input Level | -10 dBm to +15 dBm |
| Reference Output Level | > 0 dBm (typ. +10 dBm into 50 ohms) |
| Warm-up Time | 20 minutes |
| Warm-up Time (with Option B4) | 5 minutes |
I/Q Demodulation
| Parameter | Value |
|---|---|
| I/Q Demodulation Bandwidth | 28 MHz |
Options
| Parameter | Value |
|---|---|
| Option B73 YIG Filter Bypass Range | 3.6 GHz to 50 GHz |
| Preamplifier Option B24 Gain | 30 dB (nominal) |
| Preamplifier Option B24 Frequency Range | 100 kHz to 50 GHz |
Environmental & Compliance
| Parameter | Value |
|---|---|
| Vibration (Sinusoidal) | 5 Hz to 55 Hz (0.15 mm amplitude), 55 Hz to 150 Hz (0.5 g), conforms to IEC 60068-2-6 |
| Vibration (Random) | 10 Hz to 300 Hz (1.2 g RMS), conforms to IEC 60068-2-64 |
| Shock Resistance | 40 g shock spectrum, conforms to MIL-STD-810D |
| EMC Standard | EN 55011 Class B, EN 61326 |
| Safety Standard | EN 61010-1, UL 3111-1, CAN/CSA-C22.2 No. 1010.1 |
Power Supply & Electrical
| Parameter | Value |
|---|---|
| AC Input Frequency | 47 Hz to 440 Hz |
Environmental
| Parameter | Value |
|---|---|
| Max Operating Altitude | 4600 m |
| Max Storage Altitude | 12000 m |
| Operating Relative Humidity | 95% at +40 °C (non-condensing) |
RF Input
| Parameter | Value |
|---|---|
| LO Emission at RF Input | <-90 dBm (attenuation = 0 dB, f < 3.6 GHz) |
| 1 dB Compression Point (f < 3.6 GHz) | 13 dBm (attenuation = 0 dB) |
| 1 dB Compression Point (3.6 GHz to 50 GHz) | 10 dBm (attenuation = 0 dB) |
Performance
| Parameter | Value |
|---|---|
| ADC Resolution | 14 bit |
| ADC Sampling Rate | 32 MHz |
| Reference Frequency Temperature Drift | 1 × 10^-6 (0 °C to 50 °C) |
| Reference Frequency Temperature Drift with Option B4 | 1 × 10^-9 (0 °C to 50 °C) |
| 3GPP ACLR Dynamic Range | 77 dB (typical) |
Technology
Spectrum Analysis
Applications
RF & Microwave Testing, Aerospace and Defense, Wireless Communications Design