C1420 4-Port 20 GHz Analyzer

C1420 Vector Network Analyzer delivers industry-leading dynamic range and sweep speed, with all the features engineers have come to expect included standard in our software.


This “full rack” vector network analyzer with dimensions of 23.6″ x 17.3″ x 5.5″ (600 x 440 x 140 mm) and a weight of just 48.5 lbs. (22 kg), can be used in the laboratory and in production testing, without requiring a lot of space. The VNA can be integrated into production test system via Manufacturing Test Plug-in. Auxiliary Board Option is available on all Cobalt VNAs at the time of order (factory-installed) or as an add-on at a later date.


C1420 VNA includes an RF measurement module and S4 software application which runs on Windows or Linux operating system on a PC, laptop, tablet, or x86 board computer connecting to the measurement hardware via USB interface. S4 software can be installed on multiple computers that share the use of the analyzer measurement module.


VNAs and ACMs are delivered with factory calibration certificates containing no data. The add-on option for ISO17025/Z540-1 Accredited, Traceable Calibration Certificate and Uncertainties is available and needs to be specified at time of order.

  • - Frequency range: 100 kHz to 20 GHz
  • - Measured parameters: S11,…S44
  • - Effective Directivity: 100 kHz to 10 GHz: 46 dB, 10 GHz to 20 GHz: 42 dB
  • - Dynamic range: 133 dB
  • - Measurement speed: 12 µs
  • - Impedance: 50 Ohm

Applications of the C1420 include SAW and BTS filter tuning, RF component design and testing, on-wafer probing, field testing, insertion loss measurement, distance to fault measurements, antenna matching, quality control, material measurements, and many others.


View our Applications page to see how CMT VNAs are already extending the reach of engineers in many industries and applications.


If you want to consult with our engineers about your specific application, please Ask an Engineer.

Our 20 GHz VNA comes with all the features engineers have come to expect included standard in our software: linear/logarithmic sweeps with multiple trace formats, power sweeps, time domain and gating conversion, frequency offset mode, fixture simulation (embedding/de-embedding), 16 independent channels with up to 16 traces each, markers with marker search tools and marker math, various conversion algorithms, and limit tests for pass/fail criteria, etc. Test Automation programming in LabView, Python, MATLAB, .NET, etc.



20 GHz Cobalt VNA Data Sheet  |  Extended Specification Sheet


S2 & S4 Programming Manual (COM)  |  S2 & S4 Programming Manual (SCPI)  |  S4 Operating Manual


S4 VNA Windows Software  |  S4 Windows Software Release Notes  |  S4 VNA Linux Software

Testing Automation

Programming Examples  |  Programming Guides  |  S4 LABView Drivers

Design & Test a 3D Printed Horn Antenna

A Quick Guide for How to Perform Differential Measurements on a Cable in Frequency and Time Domain

RF Mixer Characterization