VNA calibration kits & ECal
Calibrate your Siglent SNA vector network analyzer to the reference plane — fast one-connection electronic calibration (ECal) modules, or precision N-type, 3.5 mm and waveguide mechanical calibration kits.
All accessoriesWhy a VNA needs a calibration kit
A vector network analyzer measures magnitude and phase with extreme precision — but a raw, uncalibrated measurement also contains the systematic errors of your test cables, connectors, adapters and the analyzer itself. Calibration mathematically removes those errors and moves the measurement reference plane to your device under test, so what you see on screen is the DUT, not the setup.
Without it, S-parameter results simply can't be trusted — which is why a calibration standard is essential, not optional, for any VNA. You re-calibrate whenever the cabling, frequency span, power or temperature changes, so a good kit is used constantly. Siglent offers two ways to do it: electronic (ECal) and mechanical.
Electronic calibration (ECal)
SAVES TIMEAn SEM5000A module contains all the standards inside one box. You connect it once and the VNA runs a full 2- or 4-port calibration automatically.
- Full cal in one connection — seconds, not minutes of swapping open/short/load/thru standards on every port.
- Repeatable & operator-independent — no manual steps to get wrong.
- Far fewer connector matings — less wear on precious RF connectors and cables.
- Ideal for production, frequent re-cal and 4-port / multiport work.
Mechanical calibration kits
Discrete open, short, load and thru standards (SOLT) — the traceable reference method, applied step by step on each port.
- The reference standard — highest confidence and full traceability.
- Lower entry cost — an economical way to get a fully calibrated VNA.
- Choose the exact connector & frequency — N-type, 3.5 mm or waveguide.
- Manual, multi-step process — more time per calibration than ECal.
Electronic calibration (ECal) — SEM5000A
One-connection automatic calibration. 2- and 4-port modules, 4.5 / 9 / 26.5 GHz.
Mechanical calibration kits
N-type, 3.5 mm and waveguide SOLT kits — male, female and full (M&F) sets.
Prices are per item and may exclude VAT; confirmed at checkout. Choose the connector type and frequency range to match your SNA model. Errors & omissions excepted.
Not sure which calibration you need?
Tell us your VNA model, connector type and frequency range — we'll recommend the right ECal module or mechanical kit and quote it.
Frequently asked questions
What's the difference between ECal and a mechanical kit?
An ECal module (SEM5000A) calibrates the VNA automatically in a single connection — fast and repeatable. A mechanical kit uses open/short/load/thru standards and is the reference method, matched to a specific connector and frequency range.
Which connector and frequency do I need?
Match the kit to your DUT's connector (N-type or 3.5 mm / SMA) and your VNA's top frequency — N-type to 18 GHz, 3.5 mm to 26.5 GHz, plus a K-band waveguide kit. Contact us if you're unsure.
2-port or 4-port ECal?
Choose a 2-port module (SEMxx2A) for a 2-port VNA and a 4-port module (SEMxx4A) for a 4-port VNA — the second digit set marks the frequency class (5 / 6 / 13 / 26.5 GHz range).
Are calibration certificates available?
Yes. ECal modules and kits ship with a calibration certificate, and we offer accredited ISO/DKD (DAkkS) calibration on request — see our calibration services.
Siglent Mechanical Calibration Kits
| Specification |
Mechanical Calibration Kit: OSLT, DC - 4.5 GHz, N-Male connector |
Mechanical Calibration Kit: OSLT, DC - 4.5 GHz, N-Female connector |
Mechanical Calibration Kit: OSLT, DC - 4.5 GHz, 3.5mm Male connector |
Mechanical Calibration Kit: OSLT, DC - 4.5 GHz, 3.5mm Female connector |
|
Mechanical Calibration Kit: OSLT, DC - 9 GHz, N-Male connector |
Mechanical Calibration Kit: OSLT, DC - 9 GHz, N-Female connector |
Mechanical Calibration Kit: OSLT, DC - 9 GHz, N-Male and Female connector |
Mechanical Calibration Kit: OSLT, DC - 9 GHz, 3.5mm Male connector |
|
Mechanical Calibration Kit: OSLT, DC - 9 GHz, 3.5mm Female connector |
Mechanical Calibration Kit: OSLT, DC - 9 GHz, 3.5mm Male and Female connector |
Mechanical Calibration Kit: OSLT, DC - 18 GHz, N-Male connector |
Mechanical Calibration Kit: OSLT, DC - 18 GHz, N-Female connector |
