4025 Series Spectrum Analyzer

The 4025 series spectrum analyzer features multiple measurement function modes, including 40MHz or 120MHz bandwidth real-time spectrum analysis, interference analysis, channel scanning, field strength measurement, USB continuous wave and peak power measurement, analog demodulation analysis, IQ analysis, and directional analysis. It also includes intelligent measurement functions such as channel power, occupied bandwidth, adjacent channel power, spectrum emission mask, carrier-to-noise ratio, harmonic distortion, spurious emission mask, and indoor/outdoor map coverage. It supports interfaces like LAN, USB, MicroSD card, and Wi-Fi wireless communication. The unit is equipped with a 10.1-inch capacitive touchscreen, supporting functions like marker dragging, frequency and amplitude drag-to-zoom. The product can be applied in fields such as on-site debugging and installation maintenance of mobile communication, satellite communication, and microwave communication equipment, interference source direction finding and map positioning, and transient time-varying signal testing.

Main Features

Frequency coverage: 9kHz~54GHz, low frequency extendable to 5kHz; standard full-band preamplifier;

RF Performance Indicators

Displayed average noise level: ≤-165dBm/Hz (2MHz~2GHz, preamplifier on, 4025A/B/D typical value)

≤-163dBm/Hz (2MHz~2GHz, preamplifier on, 4025E/G/K typical value)

Single sideband phase noise: ≤-113dBc/Hz@100kHz offset@1GHz carrier (typical value)

≤-108dBc/Hz@100kHz offset@10GHz carrier (typical value)

Third-order intermodulation distortion: +16dBm@900MHz (typical value)

Total level uncertainty: ±1.0dB (typical value)

Fast Sweep Speed

Sweep time <33ms (20GHz span, 3MHz resolution bandwidth)

Sweep time <4s (1GHz span, 1kHz resolution bandwidth, fast FFT sweep mode)

Multiple measurement function modes: spectrum analysis, interference analysis (waterfall, RSSI), channel scanning, field strength measurement, USB continuous wave power measurement, USB peak power measurement, analog demodulation analysis (AM, FM, PM), directional analysis, 40MHz/120MHz bandwidth real-time spectrum analysis (supports digital persistence spectrum and waterfall display), 2G/4G/5G demodulation analysis, IQ analysis, time-gated sweep, etc.;

Various intelligent measurement functions: channel power, occupied bandwidth, adjacent channel power, spectrum emission mask, carrier-to-noise ratio, harmonic distortion, spurious emission mask, indoor/outdoor map coverage, etc. Supports GPS/BeiDou positioning and frequency disciplining calibration for the internal crystal oscillator. After GPS lock calibration, the frequency reference accuracy can typically reach ±10ppb;

Diverse auxiliary test interfaces and digital interfaces: 10MHz reference input/output, GPS/BeiDou antenna, zero-span IF output, Wi-Fi wireless communication interface, LAN, USB, MicroSD card, etc.;

Convenient and user-friendly operation: 10.1-inch LCD capacitive touchscreen, with 6 independent markers, supporting marker dragging, frequency/amplitude parameter drag-and-zoom, signal tracking and peak tracking, peak list function, 3 display traces, and 6 detection modes (normal, positive peak, negative peak, sample, average, RMS);

Excellent field usability: Strong environmental adaptability, operating temperature -20℃~55℃, storage temperature -50℃~70℃; lightweight, with the unit including battery weighing approximately 3.5kg~3.8kg (varies by model); supports three display modes: default, outdoor, and night vision; built-in high-capacity lithium-ion battery with typical battery life of 3~4 hours;

Configurable with various field test accessories, such as USB continuous wave power sensor, USB peak power sensor, omnidirectional antenna, directional antenna, electronic compass, EMI near-field probe, vehicle charger, battery desk charger.