Spectrum Compact J0SSAP31 — Handheld RF Spectrum Analyzer 10-3000 MHz

Overview

The Spectrum Compact (J0SSAP31) is a lightweight, handheld RF spectrum analyzer designed for field engineers and technicians. It covers a wide frequency range from 10 MHz to 3 GHz and is housed in a rugged, IP54-rated enclosure. This versatile instrument is ideal for on-site measurements, providing a comprehensive set of capabilities for interference hunting, signal analysis, and data logging in a highly portable form factor.

Technical Summary

• Frequency Range: 10 MHz – 3000 MHz
• Weight: 0.57 kg
• Enclosure Rating: IP54
• DANL: Down to -165 dBm/Hz (typical)
• Dynamic Range: > 75 dB
• Display: 4.3-inch touchscreen
• Internal Memory: 8 GB
• Battery Life: Up to 4 hours
• Interface: USB Type-C (for charging and data)
• RF Input: 50 Ω SMA female connector

Operational Use Cases

Designed for field diagnostics and verification, this analyzer supports a range of critical RF tasks:

• Interference detection and localization
• Signal mask analysis
• Channel power measurements
• Adjacent channel power evaluation
• Data logging, including single sweeps, consecutive sweeps, and time plots

Deployment Environments

With its rugged, IP54-rated enclosure, the Spectrum Compact v.2 is built for reliable performance in the field. It is protected against dust ingress and water splashes, making it a dependable tool for on-site deployment in various industrial, telecommunications, and broadcasting environments.

Performance Metrics

• Displayed Average Noise Level (DANL): As low as -165 dBm/Hz (typical, with LNA enabled) for high-sensitivity detection of weak signals.
• Dynamic Range: Over 75 dB, enabling simultaneous analysis of weak and strong signals.
• Sweep Time: Fast sweep capability supports real-time signal analysis.
• Measurement Functions: Includes Center Frequency, Span, RBW, VBW, and Channel Power.
• Amplifier: Features a switchable Low-Noise Amplifier (LNA) to enhance sensitivity when needed.

Setup & Portability

Engineered for maximum portability, the Spectrum Compact weighs only 0.57 kg. Its handheld form factor, 4-hour battery, and modern USB Type-C interface for both charging and data transfer allow for rapid setup and sustained operation anywhere in the field without reliance on mains power.

Compatibility

The device features a standard 50 Ω SMA female RF input connector, ensuring broad compatibility with a wide range of antennas, probes, and coaxial cables. Data transfer and charging are handled via a universal USB Type-C port.

FAQs

How do I measure field strength or power density with this spectrum analyzer?

Spectrum analyzers in general measure the power of a signal delivered to their input connector via a coaxial cable. To measure environmental characteristics like field strength or power density, the analyzer is typically paired with a calibrated receiving antenna. The antenna's known performance characteristics (e.g., antenna factor) are used to convert the power measurement from the analyzer into a field strength value (e.g., V/m). The reviewed product data for the J0SSAP31 identifies a standard 50 Ω SMA female connector for attaching such an antenna.

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