When is an electronic calibration module preferable to a mechanical kit?

Use an ECal when the priority is speed, repeatability and reduced connector wear. ECal modules such as 85093B/85093C and N4691B perform a full two‑port (or multi‑port) calibration with a single connection and use solid‑state switching; several Keysight ECal modules also provide NIST‑traceable calibration paths.

Which product family should I pick for mmWave waveguide work?

For V‑band waveguide calibration choose the waveguide kit specified for that band. V11644A is a WR‑15 waveguide calibration kit specified for 50 GHz to 75 GHz and supports TRL and related waveguide calibration methods.

I need TRL calibration up to 26.5 GHz — what to consider?

Select a mechanical kit specified for TRL/LRL and the appropriate connector. 85052C is a 3.5 mm kit specified DC to 26.5 GHz and explicitly lists TRL and LRL support, along with precision airlines and adapters for establishing the reference plane.

Keysight Technologies (Agilent HP) Calibrators and Standards

24 models with full specifications in Calibrators, Standards.

This page surveys Keysight (formerly Agilent/HP) products for VNA, impedance, power‑meter and waveguide calibration. It covers the two main approaches in the portfolio — mechanical calibration kits and electronic calibration (ECal) modules — and notes the frequency, connector and method distinctions that determine fit-for-purpose selection. The guidance is aimed at engineers and technical buyers who need to decide between mechanical SOLT/TRL/LRL standards, transfer/verification standards, and single‑connection ECal modules for laboratory or production use.

Manufacturer: Keysight Technologies (formerly Agilent / HP)
Example ECal (N4691B): 300 kHz to 26.5 GHz, USB powered, 3.5 mm
Example mechanical kit (85056A): DC to 50 GHz, 2.4 mm, SOLT support
Waveguide standard (V11644A): WR‑15 waveguide, 50 GHz to 75 GHz

All models

Model	Type	Frequency Range	Nominal Impedance	Operating Temperature
N4691B	Calibrators, misc	300 kHz to 26.5 GHz	—	—
85033E	Calibration Kits	DC - 9 GHz	—	—
N4431B	Calibrators, misc	—	—	—
85093C	Calibrators, misc	300 kHz to 9 GHz	50 Ω	—
85032B	Calibration Kits	—	50 Ω	15 °C to 35 °C
85033D	Calibration Kits	DC to 6 GHz	50 Ω	15 °C to 35 °C
85052D	Calibration Kits	DC to 26.5 GHz	50 Ω	—
85092C	Calibrators, misc	300 kHz to 9 GHz	50 Ω	—
11683A	Calibrators, misc	—	—	0 to 55 °C
85032F	Calibration Kits	DC to 9 GHz	50 Ω	15 to 35 °C
85036B	Calibration Kits	DC to 3 GHz	75 Ω	+15 °C to +35 °C
16195B	Calibration Kits	DC to 3 GHz	50 Ω	15 °C to 35 °C
70310A	Standards, Frequency	—	—	0 to 55 °C
85031B	Calibration Kits	DC to 6 GHz	50 Ω	15 to 35 °C
85056A	Calibration Kits	DC to 50 GHz	50 Ω	15 °C to 35 °C
11613B	Calibrators, misc	—	—	—
16380A	Standard, Capacitors	—	—	0 °C to 55 °C
85033C	Calibration Kits	DC to 6 GHz	50 Ω	15 to 35 °C
85050B	Calibration Kits	DC to 18 GHz	50 Ω	15 to 35 °C
85052C	Calibration Kits	DC to 26.5 GHz	50 Ω	20 °C to 26 °C (Recommended Calibration Temperature)
85056D	Calibration Kits	DC to 50 GHz	50 Ω	+15 °C to +35 °C
85093B	Calibration Kits	300 kHz to 9 GHz	50 Ω	15 °C to 35 °C
V11644A	Calibration Kits	50 GHz to 75 GHz (V-band)	Waveguide (characteristic impedance is frequency-dependent)	20 °C to 26 °C
85038A	AC	DC to 7.5 GHz	50 Ω	20 °C to 26 °C (recommended for specified calibration accuracy)

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How the range is structured

Keysight’s calibrators and standards split into discrete families by interface and calibration method: electronic calibration (ECal) modules for fast single‑connection VNA calibrations; precision mechanical SOLT/TR L/L R kits and airlines for high‑accuracy broadband work; and specialized standards such as waveguide kits, standard capacitors and dedicated transfer/verification units. Examples: N4431B and 85093B are ECal modules providing single‑connection two‑ or multi‑port calibrations; 85052C and 85056A are mechanical kits intended for TRL or SOLT use up to 26.5 GHz and 50 GHz respectively; V11644A is a WR‑15 waveguide kit for 50–75 GHz.

What distinguishes Keysight’s offerings

ECal modules: Several Keysight modules are USB‑controlled and use solid‑state switching to perform full two‑port (and in some modules three‑ or four‑port) calibrations from a single connection. N4431B is specified as an RF ECal that supports full three‑ or four‑port calibrations and lists an overall range of 9 kHz to 13.5 GHz; 85093B and 85093C are 2‑port 3.5 mm ECal modules rated 300 kHz to 9 GHz and are USB powered.
Mechanical kits and TRL hardware: Mechanical kits cover a wide set of connector types and frequency bands. The 85052C kit is a 3.5 mm TRL/LRL kit specified DC to 26.5 GHz; the 85056A is a 2.4 mm SOLT kit specified DC to 50 GHz. APC‑7/7 mm kits (85031B, 85050B) provide genderless performance for precision laboratory VNAs.
Specialty standards: Waveguide and low‑frequency standards are provided for their respective domains — V11644A for WR‑15 (50–75 GHz), and sets such as 16380A for 4‑terminal pair standard capacitors used in impedance and LCR meter calibration.

Many ECal modules and mechanical kits include NIST‑traceable calibration paths in their specifications.

How to choose between models

Selection should be driven by four primary factors:

Frequency band and connector: pick a mechanical kit or ECal that explicitly covers the frequency span and connector type of the DUT and test set. For example, choose a 2.4 mm kit such as 85056A for DC–50 GHz work; choose a 3.5 mm ECal (85093B/85093C) for 300 kHz–9 GHz with 3.5 mm ports.
Calibration method required: for TRL or LRL on broadband microwave work, select a kit specified for those methods (85052C supports TRL and LRL). For rapid production calibration or frequent reconnects, an ECal module (N4691B, 85093B/C, 85092C) reduces the number of manual connections.
Connector gender and adapters: some mechanical kits include both male and female standards or phase‑matched adapters (85033E includes both male and female 3.5 mm standards; 85032F and 85032B provide Type‑N kits). Verify port gender options for ECal modules (several list Option 00M/00F/00A configurations).
Traceability and verification: where transfer standards or dedicated verification are needed, consider products intended as transfer standards or verification tools (N4431B lists transfer‑standard capability; 11683A is a dedicated range calibrator for certain power meters)."}],