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Frequency Range: 9 kHz to 4 GHz (covers key bands for cellular communication, Wi-Fi, Bluetooth, and industrial radio systems).
Sensitivity: Typical -130 dBm (at 1 GHz, 10 kHz resolution bandwidth/RBW, preamplifier on), enabling detection of weak signals in noisy environments (e.g., interference in telecom towers or industrial IoT networks).
Resolution Bandwidth (RBW): 1 Hz to 1 MHz (manual or automatic adjustment), supporting precise analysis of narrowband and wideband signals—critical for identifying small-frequency-span interference or measuring signal purity.
Spectrum Analysis: Real-time spectrum display with adjustable sweep time (10 µs to 100 s) and trace modes (max hold, min hold, average), allowing users to capture transient signals (e.g., intermittent interference) or average out noise for stable readings.
Power Measurement: Built-in functions for peak power, average power, and channel power (compliant with telecom standards like LTE/5G NR), enabling quick verification of transmitter output levels or signal strength in wireless links.
Distortion & Purity Testing: Measures harmonic distortion, spurious emissions, and adjacent channel leakage ratio (ACLR)—vital for validating compliance with regulatory standards (e.g., FCC, ETSI) for radio devices.
Optional Vector Network Analysis (VNA): With the R&S®FSH-Z10 option, the FSH4 can function as a 2-port VNA (9 kHz to 4 GHz), adding impedance, reflection coefficient (S11), and transmission (S21) measurements—useful for testing antennas, cables, or filters in the field.
Form Factor: Compact dimensions (240 mm × 130 mm × 65 mm) and lightweight design (~1.5 kg, including battery), fitting easily in toolkits or field bags.
Durability: IP54-rated enclosure (dust and water splash protection) and compliance with MIL-STD-810H (shock, vibration, and temperature resistance), ensuring reliability in harsh environments (e.g., outdoor telecom sites, industrial facilities).
Battery Life: Rechargeable lithium-ion battery provides up to 4 hours of continuous operation—sufficient for a full day of field testing without AC power.
Display & Interface: 5.7-inch color touchscreen (640 × 480 pixels) with intuitive menu navigation, plus physical buttons for quick access to frequently used functions (e.g., RBW adjustment, trace freeze)—easy to operate even with gloved hands in industrial settings.
Connectivity: Standard USB 2.0 (for data transfer to PCs or USB drives), LAN (LXI-compliant for remote control via software like R&S®RTO Toolbox), and optional Bluetooth (for wireless pairing with tablets/smartphones).
Software Support: Compatible with Rohde & Schwarz’s R&S®FSH View software (for data logging, report generation, and remote control), streamlining post-measurement analysis and documentation.
Telecom: Troubleshooting 4G/5G base stations, measuring signal coverage, and detecting interference in cellular networks.
Industrial: Analyzing radio emissions from IoT devices, verifying compliance of industrial wireless systems (e.g., Zigbee, LoRa), and testing power electronics (e.g., inverter noise).
Broadcasting: Monitoring FM/TV signals, checking transmitter output purity, and aligning antennas for radio/TV stations.
Aerospace & Defense: Field testing of military radio systems, measuring radar signals, or verifying antenna performance in remote locations.
| Specification Category | Detailed Parameters |
|---|---|
| Model | Rohde & Schwarz R&S®FSH4 |
| Instrument Type | Handheld Spectrum Analyzer (optional Vector Network Analyzer function with R&S®FSH-Z10) |
| Frequency Range |
- Frequency span: 9 kHz to 4 GHz - Sweep range: 0 Hz (zero span) to full frequency range |
| Frequency Accuracy | ±(1 × 10⁻⁶ × set frequency + 1 Hz) at 23 °C ± 5 °C (after 30-minute warm-up); ±(3 × 10⁻⁶ × set frequency + 1 Hz) over operating temperature range (-10 °C to +55 °C) |
| Frequency Resolution | 1 Hz |
| Sensitivity (Typical) |
- At 1 GHz, 10 kHz RBW, preamplifier on: ≤ -130 dBm - At 1 GHz, 1 MHz RBW, preamplifier on: ≤ -145 dBm - At 4 GHz, 10 kHz RBW, preamplifier on: ≤ -128 dBm |
| Resolution Bandwidth (RBW) |
- Standard: 1 Hz to 1 MHz (adjustable in 1-3-10 steps) - Video Bandwidth (VBW): 1 Hz to 1 MHz (adjustable in 1-3-10 steps, VBW/RBW ratio selectable) |
| Dynamic Range |
- Third-order intercept point (TOI): ≥ +10 dBm (at 1 GHz, 10 kHz RBW) - Spurious-free dynamic range (SFDR): ≥ 70 dB (at 1 GHz, 10 kHz RBW, input level -60 dBm) |
| Sweep Time |
- Zero span: 10 µs to 100 s - Full span (4 GHz): 10 ms to 100 s - Adjustable via manual setting or automatic optimization |
| Measurement Functions |
- Spectrum analysis: Peak, average, max hold, min hold, sample trace modes - Power measurements: Peak power, average power, channel power, adjacent channel leakage ratio (ACLR), occupied bandwidth (OBW) - Distortion measurements: Harmonic distortion, spurious emissions - Optional VNA (R&S®FSH-Z10): 2-port S-parameter (S11, S21), impedance, reflection coefficient (9 kHz to 4 GHz) |
| Display |
- Size: 5.7-inch color TFT touchscreen - Resolution: 640 × 480 pixels - Viewing modes: Single spectrum, split-screen (e.g., spectrum + VNA), trace overlay |
| Connectivity |
- Standard: USB 2.0 Host (for USB drives/printers), USB 2.0 Device (for PC connection), LAN (LXI Core 2019, 10/100 Base-T) - Optional: Bluetooth (for wireless pairing with mobile devices) |
| Power Supply |
- Rechargeable lithium-ion battery: 7.4 V, 5200 mAh (included) - Battery life: Up to 4 hours of continuous operation - AC adapter: 100–240 V AC, 50/60 Hz (for charging and direct operation) |
| Safety & Durability |
- Safety rating: IEC 61010-1 CAT II 1000 V - Protection class: IP54 (dust-protected, water-splash protected) - Environmental compliance: MIL-STD-810H (shock, vibration, temperature) - Operating temperature: -10 °C to +55 °C - Storage temperature: -25 °C to +70 °C |
| Physical Dimensions (W×H×D) | 240 mm × 130 mm × 65 mm (9.45 in × 5.12 in × 2.56 in) |
| Weight | Approximately 1.5 kg (3.31 lb) (including rechargeable battery) |
| Optional Accessories |
- R&S®FSH-Z10: 2-port Vector Network Analyzer (VNA) upgrade - R&S®FSH-Z20: Preselector for improved spurious rejection - R&S®FSH-B2: High-capacity battery (extended runtime) - Carrying case, test leads, calibration kits |
