The Rohde & Schwarz FSQ8 is a premium vector signal and spectrum analyzer designed to address the demanding analysis requirements of advanced digital communication systems. Operating across a frequency range of 20 Hz to 8 GHz, it merges the comprehensive capabilities of a high-end spectrum analyzer with those of a dedicated signal analyzer, offering a standard 28 MHz demodulation bandwidth (expandable up to 120 MHz) and exceptional dynamic range.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | GPIB (IEEE-488), LAN (10/100 Base-T), USB (Type A & B), RS-232-C, External Monitor (VGA) |
| Display | 21 cm (8.4") color TFT LCD, 640 × 480 pixels |
| Warm-up Time | 20 min |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 V to 240 V AC, 50 Hz to 400 Hz, power consumption: max 250 VA |
| Operating Temperature | +5 °C to +40 °C |
| Dimensions (W×H×D) | 435 mm × 192 mm × 460 mm |
| Weight | 15.5 kg |
Frequency Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 20 Hz to 8 GHz |
| Reference Frequency Aging per Year | 1 × 10^-7 |
| Reference Frequency Temperature Drift | 1 × 10^-7 |
| Phase Noise at 10 kHz Offset | -123 dBc/Hz (typ., CF 640 MHz) |
| Phase Noise at 10 MHz Offset | -160 dBc/Hz (typ., CF 640 MHz) |
| Frequency Span Range | 0 Hz, 10 Hz to 8 GHz |
| Span Uncertainty | 0.1% |
Sweep and Trigger
| Parameter | Value |
|---|---|
| Sweep Time Range (Span >= 10 Hz) | 2.5 ms to 16000 s |
| Sweep Time Range (Zero Span) | 1 µs to 16000 s |
| Remote Measurement Speed via GPIB | up to 70 measurements/s |
| Manual Measurement Speed (Screen Update) | up to 80 measurements/s |
| Trigger Source Options | Free Run, Video, External, IF Power |
| Trigger Delay Range | 100 ns to 100 s |
| Gate Delay Range | 1 µs to 100 s |
| Gate Length Range | 125 ns to 100 s |
Bandwidths (RBW and VBW)
| Parameter | Value |
|---|---|
| Resolution Bandwidths (3 dB RBW) Range | 10 Hz to 50 MHz |
| Resolution Bandwidth Steps | 1, 2, 3, 5, 10 sequence |
| Resolution Bandwidth Uncertainty | <3% (for 10 Hz to 10 MHz) |
| Resolution Filter Shape Factor (60 dB / 3 dB) | <4.6 (Gaussian style) |
| Video Bandwidths (VBW) Range | 1 Hz to 10 MHz |
| FFT Filter Bandwidth Range | 1 Hz to 30 kHz |
| Channel Filter Bandwidth Range | 100 Hz to 5 MHz |
Amplitude and Level Range
| Parameter | Value |
|---|---|
| Maximum Safe RF Input Level | +30 dBm (1 W) |
| Maximum DC Input Voltage | 50 V (AC coupled) |
| Input Attenuator Range | 0 dB to 75 dB |
| Input Attenuator Step Size | 5 dB |
| 1 dB Compression Point | +13 dBm (typ.) |
| Display Range | 10 dB to 200 dB (logarithmic), linear (10 divisions) |
| Level Measurement Range | DANL to +30 dBm |
Level Accuracy
| Parameter | Value |
|---|---|
| Total Measurement Uncertainty (up to 3.6 GHz) | 0.3 dB |
| Display Scale Fidelity / Linearity Error | <0.1 dB (down to -70 dB) |
| Attenuator Switching Uncertainty (at 128 MHz) | <0.2 dB |
| Total Measurement Uncertainty (3.6 GHz to 8 GHz) | 0.7 dB |
Sensitivity and Dynamic Range
| Parameter | Value |
|---|---|
| Third-Order Intercept (TOI) | +25 dBm (typ.) |
| 3GPP ACLR (WCDMA) | 77 dB (84 dB with noise correction) |
| ACLR for 4-carrier Scenario (with Noise Correction) | 77 dB |
| Displayed Average Noise Level (DANL, 10 Hz RBW, 1 GHz, Preamp Off) | -155 dBm (typ.) |
| Spurious Responses (Image, IF) | <-70 dBc |
| Residual Responses (Input Terminated) | <-103 dBm |
Vector Signal Analysis (IQ Demodulation)
| Parameter | Value |
|---|---|
| Standard Demodulation Bandwidth | 28 MHz |
| Maximum Demodulation Bandwidth (Optional) | 120 MHz |
| A/D Converter Resolution | 14 bit |
| Sampling Rate (Standard Bandwidth) | 81.6 MHz |
| I/Q Memory Depth | 16 Msample |
| Amplitude Flatness (inside 28 MHz Demodulation BW) | <0.1 dB |
| Phase Linearity (inside 28 MHz Demodulation BW) | <1° |
Inputs and Outputs (RF and Analog)
| Parameter | Value |
|---|---|
| RF Input Connector Type | N female |
| RF Input Impedance | 50 Ω |
| RF Input VSWR (Attenuator >= 10 dB, f < 3.6 GHz) | <1.5 |
| External Reference Input Frequency | 1 MHz to 16 MHz (in 1 MHz steps) |
| Internal Reference Output Frequency | 10 MHz |
| Internal Reference Output Level | 0 dBm (typ.) |
| IF Output Frequency | 20.4 MHz |
| External Trigger Input Connector | BNC female |
| Noise Source Control Drive Output | BNC female, 0 V / 28 V |
Connectivity, Control and Interfaces
| Parameter | Value |
|---|---|
| Command Emulation Languages | HP 8560E, HP 8566B, HP 8568B, HP 8594E (selectable) |
Software and Firmware Features
| Parameter | Value |
|---|---|
| Standard Measurement Functions | Channel Power, ACPR, OBW, C/N Ratio, TOI, Harmonic Distortion |
| Supported Digital Demodulation Standards Options | Bluetooth, GSM/EDGE, 3GPP WCDMA, HSDPA, TD-SCDMA, CDMA2000, 1xEV-DV, 1xEV-DO, WLAN 802.11a/b/g/j |
Physical and Environmental Specifications
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +70 °C |
| Recommended Calibration Interval | 1 year |
Frequency
| Parameter | Value |
|---|---|
| Frequency Resolution | 0.01 Hz |
| Reference Frequency Aging per Day | 1 x 10^-10 |
Power Supply
| Parameter | Value |
|---|---|
| Power Consumption | 150 VA (typical, without options), max. 230 VA |
| AC Power Supply Frequency | 50 Hz to 400 Hz |
Sweep & Setup
| Parameter | Value |
|---|---|
| Maximum Number of Sweep Points | 30001 |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Analog I/Q Input Impedance | 50 Ohm / 1 MOhm selectable (with option FSQ-B71) |
Environmental
| Parameter | Value |
|---|---|
| Relative Humidity Compatibility | 95% at +40 °C (non-condensing, EN 60068-2-30) |
| Vibration Resistance | 0.15 mm (5 Hz to 55 Hz), 2 g acceleration (55 Hz to 150 Hz) in line with EN 60068-2-6 |
| Shock Resistance | 40 g shock spectrum in line with MIL-STD-810D |
Performance
| Parameter | Value |
|---|---|
| Detector Types | Max Peak, Min Peak, Auto Peak, Sample, RMS, Average |
| Second Harmonic Intercept (SHI) | typical +48 dBm (f < 1.8 GHz) |
| Second Harmonic Intercept (SHI) with Preselector | typical +80 dBm (f > 3.6 GHz) |
Phase Noise
| Parameter | Value |
|---|---|
| Phase Noise at 1 kHz Offset | <-107 dBc (1 Hz) at 640 MHz carrier |
| Phase Noise at 100 kHz Offset | <-125 dBc (1 Hz) at 640 MHz carrier |
| Phase Noise at 1 MHz Offset | <-141 dBc (1 Hz) at 640 MHz carrier |
Level Options
| Parameter | Value |
|---|---|
| Electronic Attenuator Range (Option FSQ-B25) | 0 dB to 30 dB (5 dB steps) |
| Preamplifier Gain (Option FSQ-B25) | 20 dB nominal (up to 8 GHz) |
Demodulation Options
| Parameter | Value |
|---|---|
| Maximum Demodulation Bandwidth with Option FSQ-B72 | 120 MHz |
| A/D Converter Sampling Rate with Option FSQ-B72 | 328.125 MHz |
Filters
| Parameter | Value |
|---|---|
| RRC Filter Bandwidth Range | 10 kHz to 7.5 MHz |
| RRC Filter Roll-off Factor | alpha = 0.22 / 0.35 |
Compliance
| Parameter | Value |
|---|---|
| EMC Compliance | In line with EN 55011 Class B, EN 61326-1 |
| Electrical Safety Compliance | In line with EN 61010-1, IEC 61010-1, UL 61010-1, CAN/CSA-C22.2 No. 61010-1 |
Interfaces
| Parameter | Value |
|---|---|
| Parallel Printer Interface | 25-pin D-Sub (rear panel) |
| External Monitor Interface | 15-pin D-Sub (VGA, rear panel) |
| LAN Interface Type | RJ-45, 10/100 Base-T (rear panel) |
| RS-232-C Interface | 9-pin D-Sub (rear panel) |
| PS/2 Keyboard and Mouse Interfaces | 2 x PS/2 (rear panel) |
Technology
Vector Signal and Spectrum Analysis
Applications
RF transmitter design, wireless communications testing, signal analysis, cellular standard verification, and aerospace research.