Advanced Calibration Techniques for WavePulser 40iX High Speed Interconnect Analyzer March-2020 Giuseppe Leccia Business Development Manager
WavePulser 40iX: Testing in frequency and time domain Frequency Domain Time Domain The combination of S-parameters VNA TDR (frequency domain) and Impedance Profile (time domain) in a single acquisition with a deep toolbox for simulation, emulation, de-embedding and time-gating provides: Deep Toolbox (S-parameter de-embedding, Time Gating, Emulation equalized eye-diagram and jitter analysis ) Advanced Calibration Techniques for WavePulser 40iX - March 2020 2
WavePulser 40iX in a nutshell Testing in frequency and time in a single acquisition De-Embedding Spatial Resolution < 1 mm DC to 40 GHz Time Gating Differential and Common mode Mixed-mode Step and Impulse response Equalized eye-diagram S-parameters (rise time < 8.5 ps) Jitter Analysis Impedance Profile Frequency Domain Deep Toolbox Time Domain WavePulser 40iX High Speed Interconnect Analyzer Advanced Calibration Techniques for WavePulser 40iX - March 2020 3
WavePulser 40iX three methods of calibration 1- Internal automatic calibration: High-speed Interconnect Analyzer: calibration standards built-in, automated, simple and fast. Instant measurements from DC to 40 GHz the ideal single tool for high-speed 2- Manual calibration: hardware designers and test engineers VNA-like calibration, using the cal kit included with the BUNDLE configuration, set any user defined reference plane 3- Second Tier calibration: Combined the advantages of the manual calibration with the internal automatic calibration. User can create a new factory calibration file without sending the unit to factory Advanced Calibration Techniques for WavePulser 40iX - March 2020 4
Internal, Automatic Calibration ▪ WavePulser 40iX takes a radical and innovative approach to calibration ▪ Calibration standards are built-in (included in the standard unit): short-open-load-thru (SOLT) ▪ Automated, simple and fast calibration: connect to the DUT and press GO ▪ The measurement reference plane, which is the instrument reference plane, can be moved to the DUT after de-embedding: ▪ user cables ▪ user adapters ▪ user test fixtures ▪ Calibrated DUT measurement obtained The internal WavePulser 40iX structures for two ports (simplified diagram) Advanced Calibration Techniques for WavePulser 40iX - March 2020 5
Internal, Automatic Calibration Sequence ▪ Internal, Automatic Calibration ▪ DC to 40GHz instant measure ▪ Calibration standards are built-in (included in the standard unit): Baseline Short Open short-open-load-thru (SOLT) ▪ WavePulser 40iX measures to DC, unlike the VNA, and DC is always desired in signal integrity measurements ▪ Baseline calibration step is added to the automatic sequence for higher accuracy at low frequency and DC Advanced Calibration Techniques for WavePulser 40iX - March 2020 6
Internal, Automatic Calibration method Pulser cable 1 adapter 1 Sampler Pulser adapter 2 cable 2 Sampler Fixture WavePulser 40iX D.U.T (s-par known) Pulser cable 3 adapter 3 Sampler Pulser adapter 4 cable 4 Sampler Automatic, quick and easy calibration: instant measurements Auto Calibration: measurement reference plane from DC to 40 GHz = instrument reference plane Advanced Calibration Techniques for WavePulser 40iX - March 2020 7
Internal, Automatic Calibration method Pulser cable 1 adapter 1 Sampler Pulser adapter 2 cable 2 Sampler Fixture WavePulser40iX D.U.T (s-par known) Pulser cable 3 adapter 3 Sampler Pulser adapter 4 cable 4 Automatic built-in Sampler Automatic, quick and calibration: user cables are easy calibration: de-embedded Automatic, quick and instant measurements easy calibration: instant measurements DC to 40 GHz instant measurements from DC to 40 GHz Auto Calibration: from DC to 40 GHz measurement reference plane Advanced Calibration Techniques for WavePulser 40iX - March 2020 8
Internal, Automatic Calibration method Pulser cable 1 adapter 1 Sampler Pulser adapter 2 cable 2 Sampler Fixture WavePulser40iX D.U.T (s-par known) Pulser cable 3 adapter 3 Sampler Pulser adapter 4 cable 4 Sampler user cables are user adapters are de-embedded de-embedded Auto Calibration: Automatic, quick and measurement reference plane easy calibration: instant measurements from DC to 40 GHz Advanced Calibration Techniques for WavePulser 40iX - March 2020 9
Internal, Automatic Calibration method Pulser cable 1 adapter 1 Sampler Pulser adapter 2 cable 2 Sampler Fixture WavePulser40iX D.U.T (s-par known) Pulser cable 3 adapter 3 Sampler Pulser adapter 4 cable 4 Sampler Automatic, quick and user cables are user adapters are Test fixtures are easy calibration: de-embedded de-embedded de-embedded Auto Calibration: instant measurements measurement reference plane from DC to 40 GHz Advanced Calibration Techniques for WavePulser 40iX - March 2020 10
Internal, Automatic Calibration method Pulser cable 1 Adapter 1 Sampler Pulser Adapter 2 cable 2 Sampler Fixture WavePulser40iX D.U.T (s-par known) Pulser cable 3 Adapter 3 Sampler Pulser Adapter 4 cable 4 Automatic built-in calibration Sampler Automatic, quick and is a key competitive user cables are user adapters are Test fixtures are advantage easy calibration: de-embedded de-embedded de-embedded Auto Calibration: Auto Calibration: instant measurements measurement reference plane measurement reference plane Take a DC to 40 GHz = measurements in few from DC to 40 GHz Auto Calibration: instrument reference plane measurement reference plane minutes Auto Calibration: measurement reference plane Advanced Calibration Techniques for WavePulser 40iX - March 2020 11
Manual calibration (VNA-like calibration) method Manual calibration for any user defined reference plane Pulser Sampler Pulser Sampler Cables, adapters and fixtures WavePulser40iX D.U.T unknown Pulser Sampler Pulser Sampler Manual calibration: measurement reference plane short-open-load-thru (SOLT) calibration kit Advanced Calibration Techniques for WavePulser 40iX - March 2020 12
Second-tier calibration method Combined the advantages of the manual calibration with the internal built-in automatic calibration. Pulser Sampler Pulser Sampler Cables, adapters and fixtures WavePulser40iX D.U.T unknown Pulser Sampler the internal auto calibration Pulser Sampler takes care of drift and changes in pulse/sampler performance Auto Calibration: Manual calibration: measurement reference plane measurement reference plane Reference plane for Internal calibration short-open-load-thru (SOLT) calibration kit Advanced Calibration Techniques for WavePulser 40iX - March 2020 13
Second-tier calibration method: Create new factory Cal Pulser cable1 Sampler Pulser cable 2 Sampler WavePulser40iX Pulser cable 3 Sampler Pulser cable 4 Sampler On-site new factory user cables are de-embedded calibration procedure Auto Calibration: measurement reference plane without sending the short-open-load-thru = (SOLT) Manual calibration: unit back to factory calibration kit measurement reference plane Advanced Calibration Techniques for WavePulser 40iX - March 2020 14
Second-tier calibration method Combined the advantages of the manual calibration with the internal built-in automatic calibration Auto internal calibration takes care of drift and changes in pulse/sampler performance Second-tier calibration is performing a de-embedding operation. Advanced Calibration Techniques for WavePulser 40iX - March 2020 15
WavePulser 40iX three methods of calibration Internal, automatic calibration WavePulser 40iX gives the user the advantage of taking measurements from DC to 40 GHz in minutes and frees the user from cumbersome and time consuming calibration of the instrument Manual calibration and second-tier calibration Methods are provided within the instruments to perform manual calibrations when these are required and to apply these as second-tier calibrations so that the de-embedding effects of the manual calibration can always be used Second-tier calibration and Convert to Factory Cal Instruction has been provided for periodic factory recalibration of the instrument within sending the unit back to factory To know more go to: https://cdn.teledynelecroy.com/files/appnotes/second-tier- calibration.pdf Advanced Calibration Techniques for WavePulser 40iX - March 2020 16
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