The 4042 series offers 9 kHz–9 GHz and 9 kHz–20 GHz configurations for RF development, equipment testing and interference analysis. A full-band preamplifier and 12.1-inch capacitive touchscreen are standard. Optional capabilities include interference analysis, analog demodulation, 40 MHz real-time spectrum, IQ, vector-signal and EMI pre-compliance analysis, plus compatible USB power sensors.
Models and frequency ranges
| Model | Frequency range |
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| 4042B | 9 kHz–9 GHz |
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| 4042D | 9 kHz–20 GHz |
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Core specifications
| Parameter | Specification |
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| Preamplifier | Full-band, standard |
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| Capacitive touchscreen | 12.1 inches, multi-touch |
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| Resolution bandwidth | 1 Hz–20 MHz |
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| Resolution-bandwidth steps | 1-2-3-5-8 |
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| Zero-span sweep time | 1 μs–6000 s |
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| Zero-span time accuracy | ±1.0% |
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| Input attenuator | 0–30 dB, 2 dB steps |
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| Nominal frequency reference | 10 MHz |
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| Display traces | At least 3 |
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| Independent markers | At least 6 |
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| Auxiliary and digital interfaces | 10 MHz reference input/output, LAN, USB, HDMI; zero-span IF output requires S09 |
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| Nominal W×H×D | (377±1.2) × (250±1.2) × (119.5±0.8) mm |
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| Maximum main-unit weight | 6.5 kg, excluding accessories and packaging |
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| Real-time spectrum analysis | 40 MHz with option 4042-S12 |
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Frequency reference
Frequency-reference accuracy combines elapsed time since calibration × aging, temperature stability and calibration accuracy. The catalog assumes one year since calibration; crystal-oscillator specifications are guaranteed by its manufacturer.
| Item | Specification | Conditions |
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| Aging | ±5×10⁻⁷/year | Default calibration interval: 1 year |
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| Initial calibration accuracy | ±3×10⁻⁷ | Frequency-reference specification |
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| Temperature stability | ±1×10⁻⁷ | 0–50 °C, relative to 25±10 °C |
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Phase noise
1 GHz carrier, 15–35 °C.
| Offset | Specification |
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| 10 kHz | ≤−108 dBc/Hz |
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| 100 kHz | ≤−110 dBc/Hz |
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| 1 MHz | ≤−118 dBc/Hz |
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| 10 MHz | ≤−129 dBc/Hz |
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Displayed average noise level
50 Ω input termination, 0 dB input attenuation, average detector, RBW normalized to 1 Hz, 15–35 °C.
| Preamp | Frequency band | Specification | Applicable models |
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| On | 2 MHz–2.4 GHz | ≤−161 dBm | 4042B / 4042D |
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| On | 2.4–6 GHz | ≤−160 dBm | 4042B / 4042D |
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| On | 6–9 GHz | ≤−159 dBm | 4042B / 4042D |
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| On | 9–14 GHz | ≤−158 dBm | 4042D |
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| On | 14–20 GHz | ≤−156 dBm | 4042D |
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| Off | 2 MHz–2.4 GHz | ≤−142 dBm | 4042B / 4042D |
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| Off | 2.4–6 GHz | ≤−141 dBm | 4042B / 4042D |
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| Off | 6–9 GHz | ≤−140 dBm | 4042B / 4042D |
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| Off | 9–14 GHz | ≤−138 dBm | 4042D |
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| Off | 14–20 GHz | ≤−138 dBm | 4042D |
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Intermodulation and spurious responses
| Item | Frequency band | Specification | Conditions |
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| Third-order intermodulation, catalog specification | 50 MHz–20 GHz | ≥+13 dBm | Two −15 dBm tones, 100 kHz separation, 0 dB attenuation, preamp off |
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| Image, multiple and out-of-band responses | 10 MHz–7.5 GHz | <−65 dBc | −10 dBm mixer level |
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| Image, multiple and out-of-band responses | 7.5–10.5 GHz | <−60 dBc | −10 dBm mixer level |
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| Image, multiple and out-of-band responses | 10.5–20 GHz | <−65 dBc | −10 dBm mixer level |
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Total level uncertainty
10 dB attenuation, −50 to 0 dBm input, preamp off, 1 kHz RBW, other parameters automatic.
| Frequency band | Uncertainty |
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| 10 MHz–20 GHz | ±1.30 dB |
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Options and associated functions
| Model/code | Function/accessory | Conditions |
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| 4042-001 | English-language option | Optional |
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| 4042-002 | Chinese user manual | Optional |
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| 4042-004 | Chinese programming manual | Optional |
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| 4042-S01 | USB power measurement | Requires 87233 CW or 87235 average-power sensor |
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| 4042-S02 | USB peak-power measurement | Requires 87236 peak/average-power sensor |
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| 4042-S03 | Interference analysis: waterfall and RSSI | Optional |
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| 4042-S04 | Channel scanning, up to 20 channels | Optional |
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| 4042-S05 | Field-strength measurement | Optional |
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| 4042-S08 | AM/FM/PM analog demodulation | Optional |
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| 4042-S09 | Analog IF output at zero span | Optional |
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| 4042-S10 | Time-gated measurement | Optional |
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| 4042-S12 | 40 MHz real-time spectrum analysis | Optional |
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| 4042-S13 | List scanning | Optional |
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| 4042-S14 | IQ data storage and display | Optional |
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| 4042-S18 | Vector-signal analysis | Single-carrier digital demodulation with spectrum, vector, constellation, eye and error/symbol displays |
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| 4042-S19 | EMI pre-compliance analysis | Quasi-peak, CISPR average and CISPR RMS detectors; pre-scan, final measurement, EMI and spot-frequency scanning |
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| 4042-S20 | Phase-noise measurement | Optional |
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| 4042-H01 | GPS/BeiDou positioning | Requires external antenna |
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| 4042-H02 | Wi-Fi communications | Optional |
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| 4042-H03 | 4042 protective case | Optional |
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| 4042-H04 | 19-inch rack-mount kit | Optional |
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| 4025-H36 | PBS1 near-field probe kit | Up to 9 GHz; one E-field probe and one each 6/12/25/50 mm H-field probe, SMB male |
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Calibration and warranty services
| Model/code | Function/accessory | Conditions |
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| 4042B-JL | Calibration and report | Optional service |
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| 4042B-EWT1 | One-year post-warranty extension | Excludes calibration; one-way freight only; select additional units for multiple years |
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| 4042D-JL | Calibration and report | Optional service |
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| 4042D-EWT1 | One-year post-warranty extension | Excludes calibration; one-way freight only; select additional units for multiple years |
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Compatible USB power sensors
| Sensor model | Type |
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| 87233C | USB CW power sensor |
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| 87233D | USB CW power sensor |
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| 87233E | USB CW power sensor |
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| 87233F | USB CW power sensor |
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| 87233L | USB CW power sensor |
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| 87235B | USB average-power sensor |
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| 87235C | USB average-power sensor |
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| 87235D | USB average-power sensor |
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| 87235F | USB average-power sensor |
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| 87235FA | USB average-power sensor |
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| 87235H | USB average-power sensor |
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| 87235L | USB average-power sensor |
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| 87235DG | USB average-power sensor |
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| 87236D | USB peak/average-power sensor |
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| 87236E | USB peak/average-power sensor |
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| 87236F | USB peak/average-power sensor |
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| 87236L | USB peak/average-power sensor |
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Supplied accessories
| Accessory | Quantity |
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| Power cord | 1 |
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| Quick-start guide | 1 |
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| Product conformity certificate | 1 |
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Configuration and supply
- Specifications apply only within the selected model’s frequency range: up to 9 GHz for 4042B and 20 GHz for 4042D.
- The full-band preamplifier is standard. Real-time S12, IQ S14, vector-signal S18 and EMI pre-compliance S19 are separate options, not features included in every configuration.
- USB power measurement needs the relevant software and external sensor. The catalog’s up-to-67 GHz capability refers to compatible sensors, not the 4042 main-unit spectrum-analysis range. Select each sensor by its own frequency rating.
- Nominal dimensions are with feet closed, excluding handle, knobs, rubber keys, connectors and local protrusions. Maximum weight refers to the main unit only.
- Sensors, positioning antennas, cases, rack kits, software, calibration and warranty services follow the quotation. The supplied-accessories table does not imply that all options are included.
- Provide frequency range, real-time bandwidth, modulation-analysis needs, sensors, calibration reports and quantity for selection and quotation.
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