YC-TI-SA-0004 | Ceyear 4025 Series Portable Spectrum Analyzer
Price on request
Request a quoteThe 4025 series is designed for field RF testing, radio monitoring and interference investigation. Six models cover 9 kHz to 6, 9, 20, 26.5, 44 or 54 GHz, with a full-band preamplifier and 10.1-inch capacitive touchscreen as standard. Interference analysis, 40/120 MHz real-time spectrum, communications demodulation, mapping and direction finding use selected software and accessories.
Models and frequency ranges
Weight values are typical and distinguish model group and battery installation. All banded performance is limited to the selected model range.
| Model | Frequency range | Typical weight: without/with battery |
|---|---|---|
| 4025A | 9 kHz–6 GHz | 3.0 / 3.5 kg |
| 4025B | 9 kHz–9 GHz | 3.0 / 3.5 kg |
| 4025D | 9 kHz–20 GHz | 3.0 / 3.5 kg |
| 4025E | 9 kHz–26.5 GHz | 3.3 / 3.8 kg |
| 4025G | 9 kHz–44 GHz | 3.3 / 3.8 kg |
| 4025K | 9 kHz–54 GHz | 3.3 / 3.8 kg |
Core specifications
| Parameter | Specification |
|---|---|
| Preamplifier | Full-band, standard |
| Resolution bandwidth and steps | 1 Hz–20 MHz; 1-2-3-5-8 |
| Input attenuation and step | 0–30 dB; 2 dB |
| Zero-span sweep time | 1 μs–6000 s |
| Zero-span sweep-time accuracy | ±1.0% |
| Nominal frequency reference | 10 MHz |
| Reference aging | ±0.5 ppm/year |
| Initial reference calibration accuracy | ±0.3 ppm |
| Reference temperature stability | ±0.1 ppm |
| Capacitive touchscreen, inches | 10.1 |
| Independent markers | ≥6 |
| Displayed traces | 3 |
| Detectors | Normal, positive peak, negative peak, sample, average, RMS |
| Typical battery runtime | 3–4 h |
| Nominal W×H×D | (316.5±2.5) × (236.5±2.5) × (75±1.5) mm |
| Operating temperature | −20…+55 °C |
| Storage temperature | −50…+70 °C |
| Data interfaces | USB / LAN / MicroSD |
| Wi-Fi communications | Optional |
| GPS/BeiDou positioning | Optional |
Phase noise
1 GHz carrier, 15–35 °C.
| Offset | Specification |
|---|---|
| 10 kHz | ≤−108 dBc/Hz |
| 100 kHz | ≤−110 dBc/Hz |
| 1 MHz | ≤−118 dBc/Hz |
| 10 MHz | ≤−129 dBc/Hz |
Displayed average noise level
50 Ω input load, 0 dB input attenuation, average detector, RBW normalized to 1 Hz, 15–35 °C. The preamp is standard, but on/off values differ.
| Model group | Preamp | Frequency band | Specification |
|---|---|---|---|
| 4025A/B/D | On | 2 MHz–2.4 GHz | ≤-161 dBm |
| 4025A/B/D | On | 2.4–6 GHz | ≤-160 dBm |
| 4025A/B/D | On | 6–9 GHz | ≤-159 dBm |
| 4025A/B/D | On | 9–14 GHz | ≤-158 dBm |
| 4025A/B/D | On | 14–20 GHz | ≤-156 dBm |
| 4025A/B/D | Off | 2 MHz–2.4 GHz | ≤-142 dBm |
| 4025A/B/D | Off | 2.4–6 GHz | ≤-141 dBm |
| 4025A/B/D | Off | 6–9 GHz | ≤-140 dBm |
| 4025A/B/D | Off | 9–14 GHz | ≤-138 dBm |
| 4025A/B/D | Off | 14–20 GHz | ≤-138 dBm |
| 4025E/G/K | On | 2 MHz–9 GHz | ≤-159 dBm |
| 4025E/G/K | On | 9–14 GHz | ≤-156 dBm |
| 4025E/G/K | On | 14–21 GHz | ≤-154 dBm |
| 4025E/G/K | On | 21–32 GHz | ≤-154 dBm |
| 4025E/G/K | On | 32–40 GHz | ≤-152 dBm |
| 4025E/G/K | On | 40–44 GHz | ≤-148 dBm |
| 4025E/G/K | On | 44–50 GHz | ≤-145 dBm |
| 4025E/G/K | On | 50–54 GHz | ≤-140 dBm |
| 4025E/G/K | Off | 2 MHz–6 GHz | ≤-140 dBm |
| 4025E/G/K | Off | 6–9 GHz | ≤-138 dBm |
| 4025E/G/K | Off | 9–14 GHz | ≤-136 dBm |
| 4025E/G/K | Off | 14–21 GHz | ≤-136 dBm |
| 4025E/G/K | Off | 21–32 GHz | ≤-135 dBm |
| 4025E/G/K | Off | 32–40 GHz | ≤-133 dBm |
| 4025E/G/K | Off | 40–44 GHz | ≤-130 dBm |
| 4025E/G/K | Off | 44–50 GHz | ≤-126 dBm |
| 4025E/G/K | Off | 50–54 GHz | ≤-123 dBm |
Total level uncertainty
15–35 °C, 10 dB input attenuation, −50 to 0 dBm input, preamp off, 1 kHz RBW, other settings automatic; within the selected model range.
| Model group | Frequency band | Uncertainty |
|---|---|---|
| 4025D | 10 MHz–20 GHz | ±1.30 dB |
| 4025A/B/E/G/K | 10 MHz–20 GHz | ±1.00 dB |
| 4025A/B/E/G/K | 20–44 GHz | ±1.40 dB |
| 4025A/B/E/G/K | 44–54 GHz | ±1.80 dB |
Intermodulation and spurious response
Third-order intermodulation: two −15 dBm tones, 100 kHz separation, 0 dB attenuation, preamp off. Image/multiple/out-of-band response: −10 dBm mixer level.
| Parameter | Frequency band | Specification |
|---|---|---|
| Third-order intermodulation specification | 50 MHz–54 GHz | ≥+13 dBm |
| Image, multiple and out-of-band response | 10 MHz–7.5 GHz | <−65 dBc |
| Image, multiple and out-of-band response | 7.5–10.5 GHz | <−60 dBc |
| Image, multiple and out-of-band response | 10.5–54 GHz | <−65 dBc |
Language and manual options
| Option code | Description | Conditions |
|---|---|---|
| 4025-01 | English version | Optional, not included by default |
| 4025-02 | Chinese user manual | Optional, not included by default |
| 4025-03 | English user manual | Optional, not included by default |
| 4025-04 | Chinese programming manual | Optional, not included by default |
| 4025-05 | English programming manual | Optional, not included by default |
Analysis options
| Option code | Description | Conditions |
|---|---|---|
| 4025-S01 | USB CW/average power measurement | Requires 87233 CW or 87235 average-power sensor |
| 4025-S02 | USB peak-power measurement | Requires 87236 peak/average-power sensor |
| 4025-S03 | Interference analysis: waterfall/RSSI | Optional, not included by default |
| 4025-S04 | Channel scan, up to 20 channels | Optional, not included by default |
| 4025-S05 | Field-strength measurement | Requires suitable antenna and antenna factor |
| 4025-S06 | Outdoor map | Requires 4025-H01 positioning option |
| 4025-S07 | Indoor map, manual position marking | Optional, not included by default |
| 4025-S08 | AM/FM/PM analog demodulation | Optional, not included by default |
| 4025-S09 | Zero-span analog IF output | Optional, not included by default |
| 4025-S10 | Time-gated sweep | Over-the-air tests require 4025-H01 |
| 4025-S11 | Direction finding | Requires H01, directional antenna and compass; ZE9080-integrated compass can replace a separate compass |
| 4025-S12 | 40 MHz real-time spectrum | Optional, not included by default |
| 4025-S13 | Multiband list scan | Optional, not included by default |
| 4025-S14 | IQ capture and display | Optional, not included by default |
| 4025-S15 | GSM/EDGE demodulation | Requires matching-model H37 120 MHz real-time option |
| 4025-S16 | LTE FDD/TDD demodulation | Requires matching-model H37 120 MHz real-time option |
| 4025-S17 | 5G NR demodulation | Requires matching-model H37 120 MHz real-time option |
| 4025-S18 | Vector-signal analysis | Optional, not included by default |
| 4025-S19 | EMI analysis and CISPR detectors | Optional, not included by default |
| 4025-S20 | Phase-noise curve/single-point measurement | Optional, not included by default |
Hardware and accessory options
| Option code | Description | Conditions |
|---|---|---|
| 4025-H01 | GPS/BeiDou positioning | Requires external GPS/BeiDou antenna |
| 4025-H02 | Wi-Fi communications | Optional, not included by default |
| 4025-H03 | Wheeled aluminum case | Optional, not included by default |
| 4025-H04 | Wheeled transport case | Optional, not included by default |
| 4025-H05 | Portable backpack | Optional, not included by default |
| 4025-H06 | Power adapter | Optional, not included by default |
| 4025-H07 | 9900 mAh rechargeable lithium-ion battery | Optional, not included by default |
| 4025-H08 | 9000 mAh rechargeable lithium-ion battery | Optional, not included by default |
| 4025-H09 | Vehicle power adapter | Optional, not included by default |
| 4025-H10 | Smart battery charging dock | Optional, not included by default |
| 4025-H11 | 128 GB MicroSD card | Optional, not included by default |
| 4025-H20 | ZE9080-A directional antenna: 9 kHz–20 MHz, N(F) | H24 recommended; amplifier not included by default |
| 4025-H21 | ZE9080-B directional antenna: 20–200 MHz, N(F) | H24 recommended; amplifier not included by default |
| 4025-H22 | ZE9080-C directional antenna: 200–500 MHz, N(F) | H24 recommended; amplifier not included by default |
| 4025-H23 | ZE9080-D directional antenna: 500 MHz–8 GHz, N(F) | H24 recommended; amplifier not included by default |
| 4025-H24 | ZE9080 amplifier and compass: 9 kHz–8 GHz, N(M) | Optional, not included by default |
| 4025-H25 | ZE9080 antenna transport case | Optional, not included by default |
| 4025-H26 | Active directional antenna: 700 MHz–6 GHz, SMA(F) | Optional, not included by default |
| 4025-H27 | Active directional antenna: 680 MHz–10 GHz, SMA(F) | Optional, not included by default |
| 4025-H28 | Active directional antenna: 680 MHz–20 GHz, SMA(F) | Optional, not included by default |
| 4025-H29 | Omnidirectional antenna: 680 MHz–6 GHz, SMA(M) | Optional, not included by default |
| 4025-H30 | Omnidirectional antenna: 300 MHz–8 GHz, SMA(M) | Optional, not included by default |
| 4025-H31 | Passive directional antenna: 700 MHz–6 GHz, SMA(F) | Optional, not included by default |
| 4025-H32 | Passive directional antenna: 680 MHz–10 GHz, SMA(F) | Optional, not included by default |
| 4025-H33 | Passive directional antenna: 680 MHz–18 GHz, SMA(F) | Optional, not included by default |
| 4025-H34 | USB compass for H26/H27/H28 and S11 | Optional, not included by default |
| 4025-H35 | N/SMA-JJ RF cable, 2 m | Optional, not included by default |
| 4025-H36 | PBS1 near-field probe kit: up to 9 GHz, SMB(M) | Optional, not included by default |
| 4025-H37A | 120 MHz real-time spectrum | 4025A |
| 4025-H37B | 120 MHz real-time spectrum | 4025B |
| 4025-H37D | 120 MHz real-time spectrum | 4025D |
| 4025-H37E | 120 MHz real-time spectrum | 4025E |
| 4025-H37G | 120 MHz real-time spectrum | 4025G |
| 4025-H37K | 120 MHz real-time spectrum | 4025K |
| 4025-H38 | Handheld passive directional antenna: 380 MHz–20 GHz, N(M), compass and cable | Optional, not included by default |
| 4025-H39 | Handheld horn direction-finding antenna: 18–40 GHz, 2.92 mm(M), compass and cable | Optional, not included by default |
Calibration and warranty services
| Option code | Description | Conditions |
|---|---|---|
| 4025A-JL | Optional calibration and report | 4025A |
| 4025A-EWT1 | Optional one-year post-warranty extension | 4025A |
| 4025B-JL | Optional calibration and report | 4025B |
| 4025B-EWT1 | Optional one-year post-warranty extension | 4025B |
| 4025D-JL | Optional calibration and report | 4025D |
| 4025D-EWT1 | Optional one-year post-warranty extension | 4025D |
| 4025E-JL | Optional calibration and report | 4025E |
| 4025E-EWT1 | Optional one-year post-warranty extension | 4025E |
| 4025G-JL | Optional calibration and report | 4025G |
| 4025G-EWT1 | Optional one-year post-warranty extension | 4025G |
| 4025K-JL | Optional calibration and report | 4025K |
| 4025K-EWT1 | Optional one-year post-warranty extension | 4025K |
Configuration and supply
- Frequency-reference accuracy is ±(time since calibration × aging + temperature stability + initial calibration accuracy), using one year by default. Temperature stability applies over −20 to +55 °C relative to 25±10 °C.
- Nominal dimensions exclude the side strap, panel connectors and port plugs, with rear stand closed. Weight and 3–4-hour runtime are typical, not guaranteed for all operating conditions.
- Standard spectrum mode includes channel power, occupied bandwidth, adjacent-channel power, emission mask, carrier/noise, audio demodulation and harmonic distortion. Communications demodulation, real-time spectrum, mapping and direction finding require their options.
- S15/S16/S17 require the matching H37 120 MHz real-time option. S12 provides 40 MHz real-time analysis and does not replace that 120 MHz hardware requirement.
- USB power measurements require external sensors; sensor range is not the analyzer native frequency range. Outdoor maps, over-the-air time gating and direction finding require the listed positioning, antenna and compass configurations.
- Listed options, antennas, probes, batteries, cases and calibration services are not a default complete bundle. Confirm model, installed options, supplied accessories and delivery in the quotation.
- Warranty extensions exclude calibration. Provide frequency range, field environment, signal standards, real-time bandwidth, mapping/direction-finding needs, reports and quantity.