YC-TI-CT-0001 | 4957 Series RF/Microwave Analyzer
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The handheld 4957 series combines spectrum analysis and vector network analysis in four models: 4957B, 4957D, 4957E and 4957F, with spectrum upper-frequency limits of 6.5, 18, 26.5 and 40 GHz respectively. An 8.4-inch touchscreen supports operation in the field. Cable and antenna testing, vector voltage, USB power, field strength, GPS and electronic calibration are available through model-specific options for RF component testing, antenna-system maintenance and on-site measurements.
Models and key specifications
| Manufacturer model | Spectrum range | VNA range | Connector | Effective directivity | System dynamic range |
|---|---|---|---|---|---|
| 4957B | 9 kHz–6.5 GHz | 30 kHz–6.5 GHz | N female | 40 dB | 95 dB |
| 4957D | 100 kHz–18 GHz | 30 kHz–18 GHz | 3.5 mm male | 30–40 dB | 80–85 dB |
| 4957E | 100 kHz–26.5 GHz | 30 kHz–26.5 GHz | 3.5 mm male | 30–40 dB | 80–85 dB |
| 4957F | 100 kHz–40 GHz | 50 MHz–40 GHz | 2.4 mm male | 28–35 dB | 65–85 dB |
General specifications
| Parameter | Specification |
|---|---|
| Frequency accuracy | ±1.0 ppm |
| Display | 8.4-inch LCD touchscreen |
| Maximum safe input level | +27 dBm (typical) |
| Dimensions (W × H × D) | (313.4±2.5) × (217.1±2.5) × (101.9±1.5) mm; excludes side strap and rear support |
| Weight | 5.3 kg excluding battery |
| Standard measurement modes | Spectrum analysis and vector network analysis |
| Data storage | Internal memory, external USB storage and external SD storage |
| Remote control and data interfaces | USB, LAN |
| Independent markers | 8 |
Spectrum analysis performance
| Parameter | 4957B | 4957D / 4957E / 4957F |
|---|---|---|
| Resolution bandwidth | 1 Hz–10 MHz (1, 3, 10 steps) | 1 Hz–5 MHz (1, 3, 10 steps) |
| Resolution bandwidth accuracy (3 dB) | ±10% (1 kHz–10 MHz) | ±10% (3 kHz–3 MHz); ±15% (5 MHz) |
| Video bandwidth | 1 Hz–10 MHz (1, 3, 10 steps) | 1 Hz–5 MHz (1, 3, 10 steps) |
| Displayed average noise level (preamp on) | −150 to −157 dBm/Hz | −135 to −151 dBm/Hz |
| Displayed average noise level (preamp off) | −135 to −138 dBm/Hz | −113 to −135 dBm/Hz |
| Sideband noise (1 GHz) | ≤−108 dBc/Hz @ 10 kHz; ≤−112 dBc/Hz @ 100 kHz; ≤−118 dBc/Hz @ 1 MHz | ≤−102 dBc/Hz @ 30 kHz; ≤−99 dBc/Hz @ 100 kHz; ≤−110 dBc/Hz @ 1 MHz |
| Residual response | ≤−95 dBm (preamp on); ≤−82 dBm (preamp off); exception at 3200 MHz | 4957D/E: ≤−80 dBm; 4957F: ≤−70 dBm |
| Total level uncertainty | ±1.8 dB | 4957D/E: ±2.0 to ±2.3 dB; 4957F: ±2.0 to ±2.7 dB |
Measurement functions
| Function | Description |
|---|---|
| Vector network analysis (standard) | S-parameter testing for amplifiers, filters, attenuators and duplexers; logarithmic, linear, phase, group delay, Smith chart, polar and VSWR displays. |
| Spectrum analysis (standard) | Spectrum, channel power, occupied bandwidth, adjacent-channel power ratio and frequency counting; 3 traces and standard, sample, positive-peak, negative-peak and average detectors. |
| Cable/antenna and vector voltage measurements (optional) | Return loss, VSWR, impedance, cable loss, distance to fault, phase shift and electrical length, with appropriate software for the selected model. |
| USB power and power monitoring (optional) | USB power measurement requires a separate 872XX continuous-wave or peak power probe; coverage depends on the probe, up to 40 GHz. Power monitoring uses the spectrum input over 10 MHz–6.5/18/26.5/40 GHz according to the host model. |
| Field strength, GPS and e-cal (optional) | Field strength requires a suitable test antenna; GPS provides longitude, latitude and altitude; electronic-calibration support requires a separate e-cal module. |
| 4957B-specific software options | Interference analysis, AM/FM/PM demodulation, channel scanning, interference mapping, signal analysis and IQ capture; interference mapping requires the 4957B-S11 GPS option. |
4957D / 4957E / 4957F options and accessories
The following items are selected as needed and are not all supplied with the host. m / J means male; f / K means female.
| Option code | Compatible models | Description |
|---|---|---|
| 4957D-01 | 4957D / 4957E / 4957F | Chinese user manual |
| 4957D-02 | 4957D / 4957E / 4957F | Chinese programming manual |
| 4957D-03 | 4957D / 4957E / 4957F | English user manual |
| 4957D-04 | 4957D / 4957E / 4957F | English programming manual |
| 4957D-S02 | 4957D / 4957E / 4957F | Cable and antenna testing software: return loss, VSWR and fault location for cables and feeders |
| 4957D-S03 | 4957D / 4957E / 4957F | Vector voltmeter software: cable phase shift and electrical length |
| 4957D-S04 | 4957D / 4957E / 4957F | USB power measurement software; external USB continuous-wave or peak power probe required for CW or pulsed signals |
| 4957D-S05 | 4957D / 4957E / 4957F | Power monitoring software: external signal power measured through the spectrum input |
| 4957D-S06 | 4957D / 4957E / 4957F | Field-strength measurement software; separate test antenna required |
| 4957D-S07 | 4957D / 4957E / 4957F | GPS positioning, including software and GPS antenna options; longitude, latitude and altitude |
| 4957D-S08 | 4957D / 4957E / 4957F | Electronic-calibration support software; external e-cal module required for VNA, cable/antenna and vector voltmeter calibration |
| 4957D-H01 | 4957D / 4957E / 4957F | Spare rechargeable lithium-ion battery |
| 4957D-H02 | 4957D / 4957E / 4957F | Spare AC-DC adapter |
| 4957D-H03 | 4957D / 4957E / 4957F | English front panel, keys and labels for export |
| 4957D-H04 | 4957D / 4957E / 4957F | 31101A N male calibration kit, DC–18 GHz |
| 4957D-H05 | 4957D / 4957E / 4957F | 31101B N female calibration kit, DC–18 GHz |
| 4957D-H06 | 4957D / 4957E / 4957F | 31121 3.5 mm calibration kit, DC–26.5 GHz |
| 4957D-H07 | 4957D / 4957E / 4957F | 31123 2.4 mm calibration kit, DC–40 GHz |
| 4957D-H08 | 4957D / 4957E / 4957F | N male–male calibration cable GORE-OSZKUZKU0240 |
| 4957D-H09 | 4957D / 4957E / 4957F | N female–male calibration cable GORE-OSZKUZKV0240 |
| 4957D-H10 | 4957D / 4957E / 4957F | 3.5 mm female–female calibration cable GORE-0RD02D02024.0 |
| 4957D-H11 | 4957D / 4957E / 4957F | 3.5 mm female–male calibration cable GORE-0RD01D02024.0 |
| 4957D-H12 | 4957D / 4957E / 4957F | 2.4 mm female–female calibration cable GORE-0K0CK0CK024.0 |
| 4957D-H13 | 4957D / 4957E / 4957F | 2.4 mm female–male calibration cable GORE-0K0CJ0CK024.0 |
| 4957D-H18 | 4957D / 4957E / 4957F | ZE9080 directional antenna A, 9 kHz–20 MHz, for field-strength measurement; 4957D-H23 amplifier recommended |
| 4957D-H19 | 4957D / 4957E / 4957F | ZE9080 directional antenna B, 20–200 MHz, for field-strength measurement; 4957D-H23 amplifier recommended |
| 4957D-H20 | 4957D / 4957E / 4957F | ZE9080 directional antenna C, 200–500 MHz, for field-strength measurement; 4957D-H23 amplifier recommended |
| 4957D-H21 | 4957D / 4957E / 4957F | ZE9080 directional antenna D, 500–8000 MHz, for field-strength measurement; 4957D-H23 amplifier recommended |
| 4957D-H22 | 4957D / 4957E / 4957F | 89901 antenna, 1–18 GHz, for field-strength measurement |
| 4957D-H23 | 4957D / 4957E / 4957F | ZE9080 antenna amplifier, 9 kHz–8000 MHz, for field-strength measurement |
| 4957D-H27 | 4957D / 4957E / 4957F | 71101 adapter, N(f)–N(f) |
| 4957D-H28 | 4957D / 4957E / 4957F | 71115 adapter, 3.5 mm(m)–N(f) |
| 4957D-H29 | 4957D / 4957E / 4957F | 71116 adapter, 3.5 mm(m)–N(m) |
| 4957D-H30 | 4957D / 4957E / 4957F | 71117 adapter, 3.5 mm(f)–N(m) |
| 4957D-H31 | 4957D / 4957E / 4957F | 81101 adapter, N(m)–N(f) |
| 4957D-H32 | 4957D / 4957E / 4957F | Soft backpack for carrying |
| 4957D-H33 | 4957D / 4957E / 4957F | Aluminium carrying case for transport |
| 4957D-H34 | 4957D / 4957E / 4957F | Waterproof protective case for transport |
| 4957D-H35 | 4957D / 4957E / 4957F | 89901 antenna handle, for 89901 antenna option 4957D-H22 |
| 4957D-H36 | 4957D / 4957E / 4957F | 20402 electronic calibration module, 300 kHz–18 GHz, N connector |
| 4957D-H37 | 4957D / 4957E / 4957F | 20403 electronic calibration module, 10 MHz–26.5 GHz, 3.5 mm connector |
| 4957D-H38 | 4957D / 4957E / 4957F | 20404 electronic calibration module, 10 MHz–50 GHz, 2.4 mm connector |
| 4957D-H39 | 4957D / 4957E / 4957F | 87302FZ flexible test cable, 3.5/3.5-KK, 0.6 m |
| 4957D-H40 | 4957D / 4957E / 4957F | 87302FE flexible test cable, 3.5/3.5-KJ, 0.6 m |
| 4957D-H41 | 4957D / 4957E / 4957F | 87302AZ flexible test cable, N/N-JJ, 0.6 m |
| 4957D-H42 | 4957D / 4957E / 4957F | 87302BA flexible test cable, N/N-KJ, 0.6 m |
| 4957D-H46 | 4957D / 4957E / 4957F | 89902 horn antenna, 18–40 GHz, for field-strength measurement |
| 4957D-H47 | 4957D / 4957E / 4957F | 89902 antenna handle, for 89902 horn antenna option 4957D-H46 |
| 4957D-H48 | 4957D / 4957E / 4957F | ZE9080 antenna transport case |
| 4957D-JL | 4957D | 4957D calibration service with calibration report |
| 4957E-JL | 4957E | 4957E calibration service with calibration report |
| 4957F-JL | 4957F | 4957F calibration service with calibration report |
| 4957D-EWT1 | 4957D | 4957D 1-year extended warranty |
| 4957E-EWT1 | 4957E | 4957E 1-year extended warranty |
| 4957F-EWT1 | 4957F | 4957F 1-year extended warranty |
4957B options and accessories
The following items are selected as needed and are not all supplied with the host. m / J means male; f / K means female.
| Option code | Compatible models | Description |
|---|---|---|
| 4957B-01 | 4957B | Chinese user manual |
| 4957B-02 | 4957B | Chinese programming manual |
| 4957B-03 | 4957B | English user manual |
| 4957B-04 | 4957B | English programming manual |
| 4957B-S01 | 4957B | Cable and antenna testing software: return loss, VSWR and fault location for cables and feeders |
| 4957B-S02 | 4957B | Vector voltmeter software: cable phase shift and electrical length |
| 4957B-S03 | 4957B | USB power measurement software; external USB continuous-wave or peak power probe required for CW or pulsed signals |
| 4957B-S04 | 4957B | Interference-analysis software: waterfall and RSSI measurements |
| 4957B-S05 | 4957B | Analogue-demodulation software: AM/FM/PM demodulation analysis |
| 4957B-S06 | 4957B | Channel-scanning software: signal power measurement over multiple channels or frequencies |
| 4957B-S07 | 4957B | Field-strength measurement software; appropriate test antenna required |
| 4957B-S08 | 4957B | Interference-map software; requires 4957B-S11 |
| 4957B-S09 | 4957B | Signal-analysis software: rapid interference analysis, audio demodulation and IQ capture |
| 4957B-S10 | 4957B | Power monitoring software: external signal power measured through the spectrum input |
| 4957B-S11 | 4957B | GPS option: external antenna, internal GPS module and software |
| 4957B-S12 | 4957B | Electronic-calibration support software; external e-cal module required for VNA, cable/antenna and vector voltmeter calibration |
| 4957B-H01 | 4957B | Spare power adapter |
| 4957B-H02 | 4957B | Spare rechargeable lithium-ion battery |
| 4957B-H04 | 4957B | 20201A N male calibration kit, DC–9 GHz |
| 4957B-H05 | 4957B | 20201B N female calibration kit, DC–9 GHz |
| 4957B-H06 | 4957B | N male–male calibration cable GORE-OSZKUZKU0240 |
| 4957B-H07 | 4957B | N female–male calibration cable GORE-OSZKUZKV0240 |
| 4957B-H08 | 4957B | 87302AZ flexible test cable, N/N-JJ, 0.6 m |
| 4957B-H09 | 4957B | 87302BA flexible test cable, N/N-KJ, 0.6 m |
| 4957B-H017 | 4957B | ZE9080 directional antenna A, 9 kHz–20 MHz, for field-strength measurement; 4957B-H023 amplifier recommended |
| 4957B-H018 | 4957B | ZE9080 directional antenna B, 20–200 MHz, for field-strength measurement; 4957B-H023 amplifier recommended |
| 4957B-H019 | 4957B | ZE9080 directional antenna C, 200–500 MHz, for field-strength measurement; 4957B-H023 amplifier recommended |
| 4957B-H020 | 4957B | ZE9080 directional antenna D, 500–8000 MHz, for field-strength measurement; 4957B-H023 amplifier recommended |
| 4957B-H021 | 4957B | 89901 antenna, 1–18 GHz, for field-strength measurement |
| 4957B-H022 | 4957B | 89901 antenna handle, for 89901 antenna option 4957B-H021 |
| 4957B-H023 | 4957B | ZE9080 antenna amplifier, 9 kHz–8000 MHz, for field-strength measurement |
| 4957B-H027 | 4957B | 20402 electronic calibration module, 300 kHz–18 GHz, N connector |
| 4957B-H028 | 4957B | Soft backpack for daily instrument protection |
| 4957B-H029 | 4957B | Aluminium carrying case for transport |
| 4957B-H030 | 4957B | Waterproof protective case for transport |
| 4957B-H031 | 4957B | English labels, keys and menus |
| 4957B-H032 | 4957B | ZE9080 antenna transport case |
| 4957B-JL | 4957B | Calibration service with calibration report |
| 4957B-EWT1 | 4957B | 1-year extended warranty |
Standard accessories
| Accessory | Description |
|---|---|
| Power assembly | Standard three-core power cord, power adapter (input 100–240 V, 50/60 Hz; output 15 V, 4 A), and rechargeable lithium-ion battery |
| CD | User and programming manuals, USB driver, programming libraries, examples and installation files |
| Quick start guide | Product quick start guide |
| Factory product quality certificate | Factory product quality certificate |
| USB cable | USB cable |
Selection notes and quotation
- The nominal 4957F VNA range is 50 MHz–40 GHz. Confirm the configuration and operating conditions for low-frequency extension to 10 MHz when selecting the instrument.
- Directionality, system dynamic range and noise intervals vary with model and frequency; not every frequency achieves the best endpoint. Typical specifications are not guaranteed limits.
- Calibration kits, probes and test antennas do not extend the host instrument's frequency range. USB power probes, field-strength antennas, electronic calibration modules and associated software are selected separately.
- Confirm options for the selected model. Calibration services, extended warranty and service regions are subject to quotation and order terms.
- The image shows a 4957D (18 GHz) representative appearance. Delivered model, connectors and accessories depend on the ordered configuration.
- Provide measurement frequency range, required modes, calibration method, software options and purchase quantity for selection and quotation.