Introducing Atlas 2014 PCB Insertion loss test system
Introducing Atlas 2014 PCB Insertion loss test system April 2014 V 14: 04 Copyright © Polar Instruments 2014
New Features Featuring support for SPP, SET 2 SEIL & SET 2 DIL 2 Copyright © Polar Instruments 2014
New Features Atlas 2014 Introduces: • Support for SPP testing • Integrated environment for SPP / SET 2 DIL / Impedance Shortens training time. • Built in multiple waveform view • Support for 20 GHz, 30 GHz and 50 GHz sampling modules • New ergonomic ESD safe probe housings for SET 2 DIL test • Snapshot – for archiving and recreation of test results • Compliant with IPC-TM-650 2. 5. 5. 12 3 Copyright © Polar Instruments 2014
New Features Support for SPP insertion loss measurement technique Integrated waveform view display – allows user to drill down for more detailed waveform analysis. 4 Copyright © Polar Instruments 2014
New Features Drill down view 5 Copyright © Polar Instruments 2014
New Features SPP Impedance pre screening Built in waveform view allows user display expanded view at any time. 6 Copyright © Polar Instruments 2014
New Features SPP Impedance pre screening SPP Pre-screening from 14: 04 on supports Launch Point Extrapolation. 7 Copyright © Polar Instruments 2014
New Features New cursor function dynamic readout New cursor function provides linked readout of all active displayed results. 8 Copyright © Polar Instruments 2014
New Features New cursor function dynamic readout Cursor readout of all trace values, limits and Launch Point Extrapolation. 9 Copyright © Polar Instruments 2014
New Features SPP Test from / Test to – autoset limits Test from / test to limits auto set in SPP mode. 10 Copyright © Polar Instruments 2014
New Features Atlas SPP: • An SPP test comprises: • A series of thorough impedance pre-screening tests • (Test for line taper / impedance imbalance) • Above tests performed on both a long and short line in both forward and backward directions. • Followed by: • Alpha (loss) / Beta (phase) tests / Calculation of Effective Er • Compliant with IPC-TM-650 2. 5. 5. 12 11 Copyright © Polar Instruments 2014
New Features Atlas SPP: • The following sequence of screens step through a typical SPP test: • Pre-screening – Waveform windowing – Alpha (loss) and Beta (phase) measurements. • The very first slide of the sequence explains the coupon layout and typical connectors used. 12 Copyright © Polar Instruments 2014
New Features Typical SPP coupon connectors and terminology Legend denoting length and impedance of long line. in this case 11 cm (110 mm) and 85 Ohms differential. Legend denoting length and impedance of short line. in this case 4 cm (40 mm) and 85 Ohms differential. Short line forward connectors. 13 Short line backward connectors. Long line forward connectors. Copyright © Polar Instruments 2014 All connectors typically Molex surface mount SMA. Each connector fitted to the board with screws sized to the thickness of the coupon Long line backward connectors.
New Features Step 1 Pre screen impedance long line forward direction 14 Copyright © Polar Instruments 2014
New Features Step 2 Pre screen impedance long line backward 15 Copyright © Polar Instruments 2014
New Features Step 3 Pre screen impedance short line forward 16 Copyright © Polar Instruments 2014
New Features Step 4 Pre screen impedance short line backward 17 Copyright © Polar Instruments 2014
New Features Step 5 SPP test long line 18 Copyright © Polar Instruments 2014
New Features Step 6 SPP test short line 19 Copyright © Polar Instruments 2014
New Features Processed result screen Click on any individual result for detail view 20 Copyright © Polar Instruments 2014
New Features Pre-Screen Z differential impedance test Differential impedance measured forward / backward and delta impedance test 21 Copyright © Polar Instruments 2014
New Features Pre-Screen Odd impedance Short & long line odd impedance and balance test 22 Copyright © Polar Instruments 2014
New Features Even signal impedance pre screen Even signal impedance and balance test 23 Copyright © Polar Instruments 2014
New Features Pre-Screen one side of line pair (single ended) Single ended pre-screen of one side of differential pair. 24 Copyright © Polar Instruments 2014
New Features Pre-Screen second side of line pair (single ended) Single ended pre-screen of second side of differential pair. Note cursor display with link to graph series and test limits. 25 Copyright © Polar Instruments 2014
New Features Raw Time domain transmission impulse waveforms Raw and unprocessed impulse waveforms as uploaded from the sampling oscilloscope prior to mathematical conditioning for FFT processing. Note the reduction in impulse height on the long line impulse owing to signal losses. Hence the name “Short pulse propagation” 26 Copyright © Polar Instruments 2014
New Features Windowed TDT Impulse response display Mathematically processed TDT waveform data per IPC-TM-650 prior to FFT extraction of loss and phase information. 27 Copyright © Polar Instruments 2014
New Features Spectra display The spectra display is an indication of how much energy remains in the short and long line at any given frequency. The upper frequency of the measurement is limited by the signal power being large enough compared to the noise in the system for the math to “dig out” the ratio of power in the long line to that in the short line. . 28 Copyright © Polar Instruments 2014
New Features Alpha (insertion loss display) Alpha* is the measured insertion loss. This is similar to the “loss” graph seen on the Polar Si 9000 e. SPP denotes loss in d. B/cm (10 mm). Pass fail criteria are set in the test editor according to the limits laid down by the OEM. (*Alpha is the attenuation of the transmission line when driven and terminated by a matched load) 29 Copyright © Polar Instruments 2014
New Features Beta (phase shift in Radians per cm) Beta* (the phase shift) displays the phase shift of the transmission line (in Radians per 10 mm). Phase angle increases with frequency and is directly related to propagation velocity (Vp = C/Sq root effective Er). Phase display is “unwrapped” displaying the constant increase in phase angle. (In the Si 9000 e you will see phase displayed in a “wrapped” sawtooth format which is a convenient way of displaying an ever increasing angle on a graph scale). As with Alpha, Beta denotes the phase shift of the line when driven and terminated with a matched impedance. 30 Copyright © Polar Instruments 2014
New Features Effective dielectric constant The ability to extract the phase along with an accurate knowledge of the line length gives the ability to calculate the effective dielectric constant at any given frequency. This result shows the typical characteristic of PCB laminates with a higher Er at low frequencies – gently sloping to a much smaller reduction in effective Er as the frequency rises. 31 Copyright © Polar Instruments 2014
New Features Atlas SPP: • The previous sequence has walked you through the testing process for SPP • The following two slides show simple it is to setup an SPP test with Atlas 2014. 32 Copyright © Polar Instruments 2014
New Features SPP Pretest setup Simple yet flexible configuration for SPP test and pretest. 33 Copyright © Polar Instruments 2014
New Features SPP Pretest setup Autoset Test From / Test To. 34 Copyright © Polar Instruments 2014
New Features SPP insertion loss setup Auto line fit for Alpha regression – new from 14: 04. 35 Copyright © Polar Instruments 2014
New Features Atlas 2014 Featuring support for SPP SET 2 SEIL & SET 2 DIL Impulse forming networks for SPP test. . 36 Copyright © Polar Instruments 2014
New Features Ergonomic ESD safe probe housing for SET 2 DIL GGB probe 37 Copyright © Polar Instruments 2014
New Features Atlas test snapshot facility Tests may be saved and archived as “Snapshot files” complete with full waveform data. Snapshots may be recovered at any time for future reference. 38 Copyright © Polar Instruments 2014
New Features Atlas 800 SET 2 DIL & SPP Protection unit Intelligent protection of sampling heads in the production environment Active management of probe discharge state and connectivity. 39 Copyright © Polar Instruments 2014
New Features Sample SPP & SET 2 DIL deskew package Sample SPP coupon. Set of 5 “known good” SET 2 DIL coupons for initial SET 2 DIL deskew 40 Copyright © Polar Instruments 2014
New Features Supporting product for insertion loss: • Si 9000 e • Speedstack Si • CGen Si Supports SET 2 DIL & SPP coupons 41 Copyright © Polar Instruments 2014
New Features Atlas 2014 Supporting: • SPP • SET 2 SEIL • Bidirectional SET 2 DIL • Impedance • Compatible with Tektronix DSA 8300 / DSA 8200 / TDS 8000 and 20 GHz, 30 GHz or 50 GHz TDR sampling heads. • Operates under XP / Windows 7 / Windows 8 42 Copyright © Polar Instruments 2014
Thank you Copyright © Polar Instruments 2013
For more information: Contact Polar now: USA / Canada / Mexico Ken Taylor Asia / Pacific Terence Chew Japan japan@polarinstruments. asia Phone ( 503) 356 5270 +65 6873 7470 +81 45 339 0155 UK / Europe Neil Chamberlain +44 23 9226 9113 Germany / Austria / Switzerland Hermann Reischer +43 7666 20041 -0 www. polarinstruments. com Copyright © Polar Instruments 2013
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