SNA5004A 4.5 GHz 4-Port Vector Network Analyzer | Siglent
The Siglent SNA5004A brings four true test ports to the 9 kHz–4.5 GHz band, letting you capture all sixteen S-parameters of a device in a single connection — the practical way to characterise differential pairs, baluns, couplers, filters and multi-port modules without re-cabling between sweeps. Balanced and mixed-mode measurements, single-ended-to-differential conversion and full four-port SOLT/TRL calibration make it a signal-integrity workhorse rather than a simple two-port reflectometer.
Product overview
The SNA5004A is a 4-port vector network analyzer covering 9 kHz – 4.5 GHz with up to 125 dB of dynamic range. Full S-parameters, 1 Hz frequency resolution and an IF bandwidth from 10 Hz to 3 MHz make it a precise, complete instrument for RF and microwave component and network characterisation.
Beyond magnitude-and-phase S-parameters it adds differential, receiver and time-domain (TDR/TDT) analysis, five sweep types, automatic fixture removal for de-embedding and limit / ripple testing. Built-in bias-tees and a large 12.1-inch capacitive touchscreen round out an automation-ready platform — with optional spectrum-analysis, mixer, gain-compression, pulse and material-measurement modes activated by licence.
Key highlights
9 kHz – 4.5 GHz, 4-port
Full multi-port S-parameter characterisation through 4 N-type test ports.
125 dB dynamic range
Up to 125 dB dynamic range with a −55 dBm to +10 dBm source for high-isolation and low-loss devices.
1 Hz res · IFBW 10 Hz–3 MHz
1 Hz frequency resolution and an IF bandwidth from 10 Hz to 3 MHz trade sweep speed against trace noise.
Time-domain, TDR & TDT
S-parameter, differential, receiver and time-domain analysis, with automatic fixture removal for de-embedding.
Built-in bias-tees
Integrated bias-tees feed DC to amplifiers and other active parts through the RF port — no external tee.
12.1-inch touchscreen
A large capacitive touchscreen with multi-window display, plus LAN/USB/HDMI and SCPI/LabVIEW/IVI remote control.
Core capabilities
Full 4-port S-parameters
Measure all 16 S-parameters with vectored magnitude and phase — the basis for reliable RF component and network characterisation, with output power adjustable from −55 to +10 dBm.
Time-domain, TDR & TDT
Transform to the time domain for TDR/TDT, gating and fault location — pinpoint impedance discontinuities and characterise interconnects, cables and connectors (SNA5000-TDA / TDR options).
Fixture error compensation
Automatic fixture removal, de-embedding and adapter removal/insertion move the measurement plane onto the device under test, calibrating out cables, adapters and test boards.
Five sweep types
Linear-frequency, log-frequency, power-sweep, CW-time and segment-sweep modes give full control over stimulus, resolution and acquisition time.
Bias-tees for active devices
Built-in bias-tees feed DC to amplifiers and other active parts through the RF port, and gain-compression and pulse options extend active-device testing.
Modern connectivity
LAN, USB device & host, HDMI video output and an optional USB-GPIB, plus an optional high-stability OCXO reference (SNA5000-HPR).
Advanced measurement suite
The SNA5000A goes far beyond basic S-parameters — a multi-window platform that grows from a network analyzer into a full RF measurement system.
Arrange up to 25 traces across multiple windows and channels to view S-parameters, time-domain and Smith-chart formats side by side on the 12.1-inch screen.
Transform S-parameters into the time domain to locate reflections, impedance changes and discontinuities along cables, PCB traces and connectors.
Advanced time-domain reflectometry and transmission for fault location and impedance profiling of interconnects and channels, with step / impulse stimulus.
The optional SA function turns the VNA into a spectrum analyzer for harmonics, spurious, channel power and occupied bandwidth on the same instrument.
Characterise frequency-converting devices — mixers and converters — with scalar (SMM) and vector (VMM) mixer-measurement options.
The optional MT package measures the dielectric properties (permittivity / permeability) of materials directly from the S-parameters.
Front & rear panel
4 N-type test ports, USB ports and a 12.1-inch capacitive touchscreen up front; clock, trigger, HDMI and control I/O plus an OCXO option slot at the rear.
Connectivity
- Test ports — 4 × N-type, 50 Ω (front)
- USB Host (front & rear) — storage, mouse & keyboard
- USB Device (rear, USB-TMC) — PC control & SCPI
- LAN — browser remote control & SCPI (VXI-11)
- HDMI video output (rear)
- 10 MHz reference clock in / out
- External trigger in / out
- USB-GPIB option · OCXO option (SNA5000-HPR) · 100–240 V AC
Where it is used
RF components & filters
Characterise filters, couplers, attenuators and passive networks with full S-parameters and Q / bandwidth / insertion-loss analysis.
Antennas & cables
Return loss, VSWR and insertion loss for antennas, feedlines and cable assemblies, with time-domain fault location.
Amplifiers & active devices
Gain, matching, gain-compression and pulsed-RF testing of amplifiers and active parts, with built-in bias-tees for DC feed.
Mixers & converters
Scalar and vector mixer measurements characterise conversion loss, isolation and phase of frequency-converting devices.
R&D & signal integrity
Differential S-parameters, de-embedding, TDR/TDT and material measurement for design, validation and SI work.
Production & QA
Limit-line pass/fail, segment sweeps and full remote control for fast, repeatable production testing.
In the box
Every SNA5004A ships with the standard accessories below.
Region-specific mains lead (IEC)
USB Type-A to Type-B for PC control
For fast on-screen setup & editing
Snap-on cover to protect the front panel
Printed getting-started guide
Factory calibration certificate
You’ll need a calibration kit
A vector network analyzer is only as accurate as its calibration. The SNA5004A does not include a calibration standard — pair it with an ECal module or a mechanical cal kit (rated for 4.5 GHz) so you can measure to a trusted reference plane from day one.
Browse calibration kits & ECal
A VNA measures relative to its calibration plane. Calibration removes the errors of the cables, adapters and connectors between the instrument and your device — without it, S-parameter readings can’t be trusted.
You re-calibrate every time the cabling, frequency span, output power or temperature changes, so a good kit is used constantly — it is essential, not optional, for any VNA.
One-connection SEM-series ECal modules calibrate in seconds, or use precision N-type, 3.5 mm and 2.92 mm mechanical kits as reference standards.
Software licences & options
Full calibration (SOLT, SOLR, TRL, ECal), impedance conversion, fixture simulation and five sweep types are standard. These eleven licences expand the SNA5004A into spectrum, mixer, gain-compression, pulse and material measurement — all activated electronically.
Adds a spectrum-analyzer mode — harmonics, spurious, channel power, ACPR and occupied bandwidth on the same instrument.
Transforms S-parameters into the time domain to locate reflections, impedance changes and discontinuities.
Advanced TDR/TDT for fault location and impedance analysis of cables, PCB traces and connectors, with step / impulse stimulus.
Mathematically de-embeds test fixtures to measure SMD, PCB and non-coaxial devices, with Touchstone export.
High-performance OCXO time-base for tighter frequency stability in demanding, drift-sensitive measurements.
Measures conversion loss and match of mixers and frequency converters without a phase reference.
Full vector characterisation of mixers and converters — magnitude, phase and group delay of the conversion.
Swept and 2-D gain-compression measurements (P1dB) for amplifiers and active devices.
Pulsed-RF S-parameter measurements for devices that operate or are tested under pulsed conditions.
Extracts dielectric properties (permittivity / permeability) of materials directly from the S-parameters.
Guided performance-verification test package for periodic instrument checks and calibration validation.
Specifications
- Frequency range
- 9 kHz – 4.5 GHz
- Test ports
- 4 × N-type, 50 Ω
- Dynamic range
- up to 125 dB
- Frequency resolution
- 1 Hz
- Output level
- −55 dBm to +10 dBm, 0.05 dB resolution
- Bias-tees
- Built-in
- IF bandwidth
- 10 Hz – 3 MHz
- Sweep types
- Linear · log · power · CW-time · segment
- Measurements
- S-parameter · differential · receiver · time-domain · limit & ripple test · impedance conversion · fixture simulation · adapter removal
- Calibration
- Response, Enhanced Response, Full 1/2/3/4-port, SOLT, SOLR, TRL & ECal
- Optional modes
- Spectrum analysis · TDA / TDR · scalar & vector mixer · gain compression · pulse · material (licences)
- Reference
- Internal; optional SNA5000-HPR OCXO
- Display
- 12.1-inch capacitive touchscreen (mouse & keyboard supported)
- Interfaces
- LAN · USB device · USB host · HDMI · USB-GPIB opt.
- Rear I/O
- 10 MHz reference in/out · trigger in/out · OCXO slot
- Remote control
- SCPI · LabVIEW · IVI (USB-TMC / VXI-11 / Socket / Telnet / WebServer)
- Video output
- HDMI
- Power
- 100–240 VAC
Specifications are guidance only — the official Siglent datasheet is the definitive reference. Software licences are delivered electronically and excluded from the 14-day EU return right once the key has been issued.
Compare the SNA5000A series
Six models from 4.5 GHz to 26.5 GHz, in 2- and 4-port configurations.
| Model | SNA5002A | SNA5004A THIS MODEL | SNA5012A | SNA5014A | SNA5022A | SNA5032A |
|---|---|---|---|---|---|---|
| Frequency range | 9 kHz – 4.5 GHz | 9 kHz – 4.5 GHz | 9 kHz – 8.5 GHz | 9 kHz – 8.5 GHz | 100 kHz – 13.5 GHz | 100 kHz – 26.5 GHz |
| Test ports | 2 × N | 4 × N | 2 × N | 4 × N | 2 × N | 2 × N |
| Dynamic range | 125 dB | 125 dB | 125 dB | 125 dB | 125 dB | 125 dB |
| Output level | −55 to +10 dBm | −55 to +10 dBm | −55 to +10 dBm | −55 to +10 dBm | −55 to +10 dBm | −55 to +10 dBm |
| Display | 12.1" touch | 12.1" touch | 12.1" touch | 12.1" touch | 12.1" touch | 12.1" touch |
| Price | €6,600.00 | €12,700.00 | €14,700.00 | €21,700.00 | €25,070.00 | €30,080.00 |
Ready to order the SNA5004A?
In EU stock, shipped from the Netherlands with full warranty and expert support. Compare the full SNA5000A range or talk to us about the right configuration and options.