User Manual
Contents
1. oh Min Pos 2 18 in Max Pos 3 04 in i 0 23 nano seconds Test 75 ohms 80 53 PASS ooo 5 0 Prop 1 15 ns Delta 2 30 ns Dist 4 34 in Trace Result Average Serial Job Nu Layer Times Max Va Min Ya Std Dev Operat There are no theme bo show in this view Here is the result of the test we just created Next we want to properly set the Pass Fail zone With the cursor anywhere in the crosshatch are and right click Edit Test Definition Snap Test to Cursors Snap Test to of Cursors Save as New Test Modify Current Test Print Print Preview This popup should appear Click on Snap to of Cursors Ohms 1 i e aa era a oee e e e E a A a ason AYE 80 53 SdDev O04 l aeoaea ET Pr E E E E a E E E A a pee e gt ee en te gee ee aaa a a ae ate ee ee Min 80 49 Max 80 61 405 00 Wir Eimi 67 50 Max Emit 82 50 2 22 nnn b n I IAS AL Ignace nnn annnnan ennan as 00 Min Pos 2 18 in Max Pos 3 4 in Sa TE e a E E E le APAT ee ea AEE A gl a a a i rN Ae e 0 23 nano seconds Test 75 ohms i 80 53 PASS 75 00 7 Set Percentage Limits SG 0G 269 525 oes a ceea lt lt lt 4 lt 2 00 505 04 ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee eee a in e Chr r 26 00 i KLE 0 0 1 0 2 0 3 0 4 0 Inches Prop 1 15 ns Delta 2 30 ns Dist 4 54 in Trace Result Average Serial Job Nu Layer _ Time Ma2. 3 14 SF a2 jm 27 2000 par 1 Pass 35 3 O04 q 1 WL 25 61 i 11 SU ohm imr 2 PASS FHSS a 2445 A Wrtli 4b EEF ira jm 12 Fall ra Oo 4 1 i rit oe 1 19 i we 78 51 4 1 TASI fifil ka Realy Start Be o BF wicresett windows i FScanScript firs a FreeCell new manual org S CREATIM A TEST STII marmaal 2010 1 ME Rb 12 42 PM SETTING DIRECTORIES Now would be a good time to select where you want to store your files Click on ACTIONS PREFERENCES SET DIRECTORIES to see this popup _ File Location Preference Data File Directory Report File Directory Export File Directory CREATING A SINGLE TEST PROGRAM This assumes that you have already performed an EOC check for both single ended and differential and have the proper probes attached and you have also executed Actions find the end of probe for both single ended and differential Click on Actions preferences set X axis to and select probe Right click the mouse with the cursor in the test list pane and click on Insert or click on ACTIONS and click on Insert Trace Def or hit INS to bring up the Test Editor Test Editor e Test Name Allowable Error Locked Ohms Target Impedance Ohms Layer 50 0 Plus 10 0 Minus 10 Units Ohms per Division Inches 10 Ohrns Loss Compensation S fault starting Position Ending Position S Uetaun User 3 00 i 400 i 0 00 Ohms in Trace Window Startat 5 0 in From 0 0
3. EOC End of cable can be set Live mode In live mode the ST600 tests continuously Recommended mode for faster testing Log coupon data Logs the data of the current coupon Insert trace def Opens test editor Test editor can be opened d by right clicking with the cursor in the test list pane or hitting F4 Test Edito 7 Test Name Allowable Error 50 ohms W Locked Ohms Target Impedance Ohms 50 0 Flus 10 0 Minus 10 Inits Ohms per Drision Inches 10 Ohms Loss Compensation starting Fosition Ending Position Default 3 00 4 00 User 0 00 Ohms in Trace Yvindow Starat 5 0 in From 0 00 in To 500 Fropoqgaton Welocity Default Differential 0 66 User Measurement Region as a Percentage Range Create report Creates a report using the present datalog data in a pdf format End of Probe Creates a vertical blue line at the felectricald probe tip or aunch pointd Sirians View Actions nme dow SENEEN Time Max Va Min Va Std Dev Operat There ate ro tems to show in this wier Trace Result Average Serial Job Nu Layer 50 ohms Single Ended Target 50 Ohms 10 0 This is the End Of Probe marker It shows the electrical end of probe Preferences Opens a popup with additional functions Company Info Colors _ Auto Advance V Auto Log Set Directories Default Test Def Set Output File Start X Axis From
4. V Sounds User Manager Set Next Serial Serial numbers are automatically sequenced This allows the user to set the next serial number Log In and Log Out Allows user to MpasswordOthe system Go to Preferences User Manager to set up Password User names and passwords are case Cancel User Management Set Admin Password Delete User Clear all Passwords Cancel Save and Close Set the password PREFERENCES Actions Window Help Ferform Test Calibrate Live Mode Ohms 00 00 100 00 Log Coupon Data Insert Trace Def WU Create Report an 00 End of Probe Preferences Company Info Set Next Serial Colors Security 4 Auto Advance 4 Wf Auto Log Set Directories Default Test Def Set Output File Start X Axis From Sounds w Show Cursors Company Info Company Name aisha iy Address 4455 Main St Any City Telephone Fax 123 723 1234 info company com Cancel e Information entered in this window will appear in reports Colors Background Grid Criteria Trace Loss Axis Cursors 7 a Result Awara Serial Job N Layar Time Mie Min Std Der Oper wh HOTE i 2 Wri a FAIL GILLZ 1 4 OAD 61 65 Gh U 2E Onn PASS mes l 1 WAH i io Al 1 PASS GIH Tana GITE G51 AG 70 ah FAIL GL 2 4 O08 gias BLM 0 05 on PASS Gra 2 ii 0 7 50 7A 0 13 Allows th
5. 48 M1 345 1 01 23 10 10 21 43 7526 89 5169 04 698 12 jm 75 ohm laver 12 FAIL 6164 32 MOL 2345 12 01 23710 1021435 8437 29 5313 00 972 68 im z Ready fYStart E Ey Microsoft Wi B FreeCell 12 6 Microso Inbox Mo 5 Internet 2 ZScanScript Zi Norton File Pa 57200 User SVR mich 9 55 PM A test is initiated by highlighting the trace definition of the trace then left clicking the mouse or by pressing the outermost portion of the footswitch To save the test right click the mouse or press in the innermost portion of the footswitch A test can also be initiated by hitting ENTER A test can also be saved by hitting SHIFT Enter Note When operating in LIVE MODE the ST600 tests continuously Place the Microstrip probe tips on the coupon pads to be tested be sure you have observed the correct polarity of signal and ground connect and initiate a test The impedance waveform will be displayed Execute the test by left clicking the mouse or use the foot switch for hands free operation Right click to save the data and automatically advance to the next test assuming auto advance is selected The trace definition will turn to green on pass red on fail Right clicking the mouse saves the test to datalog and places a red or green pip to the right of the trace definition Pressing the innermost portion of the footswitch will do the same Auto advance will sequence through the coupons as you test making
6. Clicking on Window initiates this popup Window Help New Window Cascade Tile Arrange Icons 1 Z5canscript2 This feature allows you to view more than one test at a time Note that the 2 tests are Trace Result Avera Serial Jobk Layer Time Hax Min Vu Std Dev Oper Poh MOTE i 2 paria Pooh FAL GLzz 1 4 Hajde bs enie 028 i h PASS Gh AS j ii garga 66 99 pAn G07 la os rece Result Aver Serik JobM_ Layer Time Hex Min c Std Oev Oper different 22 us 2 AN la ii Clicking on New Window adds another window The windows can be cascaded B vermont 3 track tds 3 Trace Result Avera Seetal Joab Al Layer Time Mex Min v Std Bev Omer A oh NCTE a I fog rm re FAI ai i7 1408 igs BOL 7G O28 l oh a ee I 4 pin Fs Fi oh PASS bhas l Li THVT GH Go Hl Ou Ao PASS 8546 2 2 08 65 72 Bl 016 Or Tiled Trace Result Aver Serial Job Layer Time Mem iim BASS W ms 1 me Mi oe ret ut Avira Soria Job H Layer Timo Mau z Clicking on Initiates Board Details screen x Customer Company Board Type Rogers Part Number 1324850 Revision Number ros Notes Clicking on ie Allows you to search for and open files Clicking on Allows you to save files Clicking on Coupon Details l x 0 traces PASSSED vs AE m
7. FILES AS TEMPLATES You can create a new test file by opening an existing test file Start by opening a saved file that is similar to the one you want to create Go into test editor and make any changes you wish ie test names target impedance etc Add or delete tracks then save under the new program name TEST A test is initiated by left clicking with the cursor in the test screen or by pressing the outer most switch on the footswitch If the track tests PASS the corresponding test in the test pane will display a green pass button J File View Actions Window Help JA 20e Oo El 50 ohm layer 1 A failed test will display a red Mbuttono File View Actions Window Help J8 d Ole bt 50 ohm layer 1 Right clicking the mouse with the cursor in the test area will save the test the test description will also change in color to green for pass and red for fail When you have sequenced through all the tests a popup will show the test results and ask for operator name job number and starting serial number Subsequent tests can be automatically saved if you choose The serial numbers are automatically sequenced SET DEFAULT DEFINITIONS Setting the defaults is one of the first things you should do This feature allows you to preprogram a large percentage of each test because some parameters rarely change To get into the Set Default screen click on ACTIONS then PREFERENCES and then DEFAULT TEST DEF You
8. Ligh Port Port Port Connector The Red Comm light indicates that the ST600 and the computer are communicating If this light is not on the unit is not talking with the computer If this light is on and you are not able to make measurements check to see if you have another instance running The USB port connects to a standard USB peripheral cable connection The ST600 is compatible with USB version 2 0 The differential probe ports are labeled CDQ and connect to the 100 ohm differential probe ACCST 602 via two SMA cables These ports are used to make differential measurements and can be connected in either order The single ended probe port is labled and connects to the 50 ohm probe ACCST 601 via an SMA cable This port is used to make single ended measurements The ST600 system is configured with four measurement ports so that the user can take either single ended or differential measurements without having to change cable connections The single ended and differential probes can be left connected to the system continuously The second single ended measurement port can accommodate a probe with different pins spacing ie 0 050 for measuring small pads or a probe with a different impedance ie 70 ohms For typical measurements a 70 ohm probe is not required the 50 ohm standard probe can make 70 ohm measurements accurately unless the trace measured 1s shorter than 30 The Zmetrix ZscanE softwareE is designed for use withi
9. and browse to the rood directory of the installation i Installing the ZscanE Software CD The drivers for both the footswitch and the ST200 are both located on the CD Step 5 Plug in the ST600 and repeat step 4 Installation is now complete A GUIDE TO ZSCAN SCREENS POPUPS and PULLDOWNS The Zscan software is intuitive and easy to use when you have an idea of where to find things Please take a few moments to familiarize yourself with the location of the various functions The Tool Bar File View Actions Window Help Crm Boeo Clicking on FILE brings up this popup File View Actions Window Help Ctrl N Open Ctrl 0O Close Save Ctrl S Save As Print Setup 1 rigiflex PN A80156 tds 2 C Buffer ZScanScripti tds 3 C Buffer agg test tds 4 C Buffer step test tds Properties Exit VIEW Clicking on View brings up this popup allowing you to view status bar and tool bar View Actions r v Toolbar Status Bar ACTIONS Clicking on Actions on the tool bar displays this dropdown menu Actions Window Help Perform Test Calibrate Live Mode Log Coupon Data Insert Trace Def Create Report gt End of Probe b Preferences Set Next Serial Security 4 Perform test is exactly what it implies Depress the footswitch or left click with the cursor in the Test screen In NiveOmode nothing is required It is in continuous test mode Calibrate The system calibration can be checked
10. comes with all the accessories the user will need to make either single ended or differential measurements Here is what you should have e1 50 ohm probe e 1 100 ohm differential probe e 3 SMA cables e 2 50 ohm semi rigid reference standards 2 NIST traceable e 1 Footswitch e 1 Anti static wrist strap and cable e 1 USB peripheral cable e ZscanE Software Downloadable from www zmetrix com PROBES and CABLES Probes and cables should be considered to be consumables Like tires on cars they are required for operation but they will wear out with prolonged usage CABLES The cables supplied with the ST600 are premium grade cables selected for the best electrical performance To achieve the performance levels the inner conductors are solid copper which makes the cables stiff Being made of solid copper also means that they work harden with prolonged use and can develop micro cracks When this condition exists test results become erratic therefore it is extremely important that the cables be electrically checked periodically This is simple procedure takes only seconds and will save hours of grief The cables are expected to provide trouble free performance for hundreds of hours PROBES The ST600 is supplied with one single ended probe and one differential probe The interior of the probe Is a microstrip made of RogersE material and the spring loaded probe pins have been selected for optimal performance Standa
11. the line s capacitance per unit length Where Zo Characteristic impedance of line L Inductance per unit length of line C Capacitance per unit length of line Barring any dissipative effects such as dielectric leakage and conductor resistance the characteristic impedance of a transmission line is equal to the Square root of the ratio of the line s inductance per unit length divided by the line s capacitance per unit length Where L is in henrys per unit length C is in farads per unit length and Zois in ohms Consider an electrical signal travelling through a conductor such as a PCB trace When the signal encounters a change of impedance Zo arising from a change in material or geometry part of the signal will be reflected and part transmitted These reflections are likely to cause aberrations on the signal which may degrade circuit performance To optimize performance of high speed circuits it is desirable to match the input and output impedances of devices with the characteristic impedance of the interconnections The ST600 The ST600 has four connections on the front panel They are from left to right the two differential probe ports the single ended probe port and the ESD wrist strap port Citic D S S WS a ac EZ aF a s S wi g M i STOLI CLantnoalled Impedance LES ASIEI 4 STRIX Communication Differential Single ended Second single Wrist strap
12. 0 in To 6 00 Fropogation Velocity Use Aggressive Deconvolution Defaut Gaa _ Differential 0 66 Fass on Average Measurement Region as a Percentage Range Cancel Enter all the parameters Test Name Target Impedance Trace Window Starting Position and Ending Position The system defaults Tolerance to 10 so unless you want to change leave as is Place the cursor on the Test Name in the Test LIST pane and left click the Place the probe on the trace you want to test and left click the mouse to highlight the test The Test Name will be blue highlighted Place probe on trace to be tested observing polarity With the cursor anywhere in the test pane left click the mouse The system should have taken one test which should be displayed on the screen You can also initiate a test by hitting ENTER Alternatively you could have selected ACTION and selected fLive Modeo and the system would be in a continuous test mode Your screen should look similar to the screen below File View Actions Window Help JURA scgoco a 50 ohms Layer Ohms 100 00 seman OT3LSS i Ave 52 98 StdDev 0 09 Min 52 74 Max 53 05 20 00 Mir Limit 45 00 Max Limit 5 W Min Pos 2 20 m Max Pos 3 07 im 0 23 nano seconds Test 50 ohms Prop 1 15 ns Delta 2 30 ns Dist 2 34 in Trace Result Average Serial Job Nu Layer Time Max Va Min Va Std Dev Operat 50 ohms FAI 53 59 1 11 0
13. 10 81 34 8082 O15 jm 50ohmlayer1 PASS 52 99 O01 245 1 01 23 10 53 09 52 82 009 jm 37 5ohm layeri PASS 3441 O01 23451 01 23 10 34 71 34 32 010 jm 50 ohrn layer 2 PASS 4846 O01 2345 2 01 23 10 49 56 47 25 0 71 jm 50 ohm layer 1 FAIL 5788 48 001 2345 I2 01 23 10 7526 89 5169 09 698 12 jm 75 ohm layer12 FAIL 6164 32 001 23345 Oo OL 23 10 8437 29 5313 00 972 68 jm 75ohmlayer1 PASS 8048 002 2345 1 01 23 10 80 54 80 36 005 jm 50ohmlaveri PASS 5211 002 7345 1 01 23 10 52 16 52 10 0 02 im Clicking on a datalog Result will bring up the saved test on the screen displaying the results of the original test Either the most recent test or from a saved file Right clicking on any test brings up this popup Delete Coupon Print Preview Print Export Export2 Select Columns Report On Sort By e Edit Coupon Tests can be deleted printed or exported in a csv format for spreadsheet use and you can select which columns we want to display Delete Print Preview Print Export Select Columns Report On a v ALL Sort By d PASS Edit Coupon FAIL Create a report s showing all the tests only the passed tests or only the failed tests Sort by Time Date Serial Number or Layer Delete Coupon Print Preview Print Select Columns Report On gt Sort By b Time Date Edit Coupon seral Number Export Pass Fail Layer 22 25 nn rrr How much data do you wish to display Sele
14. 5 ohms PASS 50 ohms PASS 0 chms PASS Taohms PASS Tiohms PASS 11 06 11 SAA 53 47 1 06 11 35 76 34 29 106 11 48 91 47 09 11 06 11 53 34 53 13 11 06 11 81 08 80 93 11 06 11 80 64 80 42 11 06 11 53 33 53 13 11 06 11 34 37 lb 49 22 4737 50 ohms PASS 375 ohms PASS ieSeSe 3 2s Here are all six tracks programmed plus some datalog Test each track and edit for any changes that may be necessary maybe a repositioning of the test window YOU ARE NOW READY TO TEST Testing printed circuit boards Prior to testing boards please ensure that the appropriate anti static methods are observed ig Z5canScript first pass 1 23 10 tds E x A File View Actions Window Help E x dan gosso i 75 ohm layer 1 50ohm layer 1 37 50hm layer 1 50 ohm layer 2 diff 2 50 ohm layer 12 lt 75 ohm layer 12 PSA aN 00 g h rmeeseconds Cote Sob layer Trace Name Result Average Seral Num Job Num Layer Time Date Max Value Min Value Std Dev Operator a r3 chm wer FAIL a3 5 Cunent Co 3 03 B3 38 O08 SQohmlayer 1 PASS 54 68 Current Co 1 54 76 54 54 0 07 73 ohm layer 1 PASS 81 22 DOT 2345 l 017 23 10 10 21 43 81 34 30 82 0 15 m S0chm layer PASS 5299 CHIT 2345 1 O1f44 10 10 21 43 5204 IiE O04 jm a7 5o0hm layer 1 PASS 34 41 DOL 2345 1 017 23 10 10 21 43 3471 34 32 0 10 jm 50 ohm layer 2 PASS 4846 C1 7345 Fi 0123 10 1021 43 45 55 4725 O71 m 50 chm layer 12 FAIL 5788
15. 7 60 31 57 54 1 88 50 ohms Single Ended Target 50 Ohms 10 0 Ready O SR The right side or rendoof the trace should be visible exiting to the top of the screen If you do not see the end of the trace enter a larger number in the Trace Window box in the Test Editor Adjust the Pass Fail window for optimal position IPC recommends a starting position at the 50 point of the waveform and the pass fail window width to equal about 20 of the trace length ie a trace 5 inches in length would have a window width of 5 inches x 2 or one inch The width and position can be adjusted by rdragging the window with the cursor in the middle of the crosshatch area The width can be adjusted by grabbing an edge of the crosshatch area and dragging it to widen or shorten the window Right clicking with the cursor in the crosshatch area will save the test window parameters to the Test Editor That s it you ve created a single test program CREATING A COUPON TEST PROGRAM You ve programmed a single test Most coupons have more than one track so now let s program a coupon The following is an example of typical test program generation for a coupon s 75 OHMS 53711 7104059 1 REV 001_ 50 OHMS MFR 63695 0617 57 5 OHMS m D gi Ro Ro Ronewe o SiN O47 1 4 DIFF 50 OHMS 50 OHMS 75 OHMS acg RMN e This coupon has six tracks to be measured 5 single ended and one differential The quickes
16. METRIX J INNOVATION BY DESIGN ST600 USER GUIDE e fa E ok g pe T Y ZpeTRix a Zmetrix 1195 Spring Creek Pl Suite B Springville UT 84663 801 489 8708 Wwww zmetrix com Copyright Copyright P 2010 by Zmetrix Inc This manual and the hardware described in it are copyrighted with all rights reserved The manual may not be copied in whole or in part for any use without prior written consent of Zmetrix Disclaimer The following paragraph does not apply in any state or country where such statements are not agreeable with local law Even though Zmetrix has reviewed its documentation Zmetrix provides this publication ras isO without warranty of any kind express or implied including but not limited to the implied warranties of merchantability or fitness for a particular purpose This documentation 1s subject to change without notice and should not be construed as a commitment or representation by Zmetrix This publication may contain inaccuracies or typographical errors Zmetrix will periodically update the material for inclusion in new editions Changes and improvements to the products and or programs described in this manual may be made at any time ST600 Warranty Installation Service and Repair Policies Warranty Zmetrix warrants the ST600 controlled impedance test system to be free from defects in material and workmanship for two years from the date of original purc
17. a i j 1 100 00 1 DB 1T 17 46 46 SEEST p e a heat ee op on AYE 0 00 StdDey 0 00 Min 0 00 Max 0 00 90 00 Min Limit 45 00 Max Limit 55 00 Prop OBU ns Trace Result Average Serial Job Mua Layer SM erasers Deta 1 59 rs Time Max Wa Min Va Std Dev Operat Thete ane ro dems bo showin thri view a0 oo Inches Dist 3 00 in SCRL Notice that there is nothing in the testlist pane or the datalog pane The main screen has the default test parameters and there is a pass fail zone with white cursors at each side of the zone Next click on Actions Insert Trace def The Test Editor screen will appear Fill in test data A good start would be a 50 ohm test Once you have all the data filled in click on Save If you click on the newly created test you will notice a more complete description of the test at the bottom of the test pane You will also notice that the test is now highlighted MG PcanScript frst pass 1 23 10 tds lex J file Yew Action Window Help deters Je2 B gocs 75 ohm layer 1 i hm layer 7 50 ohm layer 2 ditt pi ohm layer 12 i 75 ohm layer 12 La m Trace Marne Feast Average Serial Num Job Mom Layer Tine Date Max Value Min Vakse Sid Dey Operator SUohmiayariz Pass S358 O13 2345 13 i i0 5292 5173 04 jm 7 oT wir 12 IL lli i 1 P23 2169 05 tol ArGHo m Fo ohm ayer 1 PASS 8105 Eii 1 J Sl A 11 im Stotim iyor 1 FASS 5314 Las A 1 C2
18. ct Columns x OK Cancel Click on the columns you wish to display in the datalog pane Clicking on EDIT COUPON brings up this screen operator and job number can be entered 1 traces PASSED 0 traces FAILED cancel 0 faces UNTESTED Serial Number Operator Job Number Date 01 07 11 19 56 51 Preparing the system Open the Z scan program the screen should look similar to the screen below File View Actions Window Help lejxi lJ 2 A Been Te a i Ee ee Se ee T a ey ee eee ee ele ee ey eae a ete ae an Trace Result Avera Serial Job N Layer Time Max MinV Std Dev Oper Thea wa ran kera By shree in thay were The following steps are advised to ensure that the system is working properly and that the cables and probes are properly connected In addition you can preprogram the ST600 which will customize it for your specific requirement by clicking on Actions Preference Default Test Def If you will be testing coupons primarily click on Action preferences and default criteria In this mode you can set the default parameters Any time you bring up the editor it will default to your selected test window target impedance etc You can change them as required This feature is incorporated to minimize key strokes Attach all three cables and tighten connector with torque wrench it is impossible to tighten properly using fingers only Cables not tightened properly wil
19. e 3 traces UNTESTED Serial Number J Operator o OSE Job Number o OE Date oxyozjia 1416 22 Initiates this POPup ccccccccccsscccccccccccces Allows you to log the coupon data Clicking on Toggles LIVE MODE Single Test Clicking on Brings up the Calibrate screen Channel single 1 r Current Calibration Calibration Constant 24578 53 47 41 Operator oo 05 1 0 15 20 25 30 35 Inches Length of Airline in 4 Known Impedance ohms Measured Impedance 3306 20 Ohms Clicking on Displays version of Zscan in use Pca cri y Scan Version 4 2 3 Copyright C 2012 CREATING A SINGLE TEST The Test Editor Screen can be accessed by right clicking the mouse with the cursor anywhere in the left pane or by clicking on ACTION and then clicking on Insert Test Data Test Editor J Test Name 50 ohms Target Impedance Ohms 50 0 LInits Inches starting Fosition 3 00 in Trace Yvindow From 0 00 in Channel aingle Differential A Single Layer Ohms per Drision r 10 hms r Ending Position 4 00 in To 500 in single 2 TFass on Average _ Measurement Region as a Percentage Range Test Editor Screen Allowable Error W Locked Ohms Plus 10 0 Minus 10 Loss Compensation Default User 0 00 Ohms in Start at 5 0 in Fropogaton Yelocity Default 0 66 C im User c A single test is crea
20. e user to set the screen colors Auto Advance Auto Advance None Auto Log After Test Set Directories y After Pass Provides three choices None After Test and After Pass Recommended setting is After Pass This provides the opportunity to retest if necessary before advancing The test sequence will be advanced to the next test upon datalogging AUTOLOG When Autolog is checked the system will automatically log the data and advance to the next coupon SET DIRECTORIES Data File Directory Report File Directory Export File Directory This popup allows the user to select the directories for datalogging and reports DEFAULT TEST DEF This utility brings up the edit screen and allows the user to select the default criteria This can result in time savings when creating test programs This will be discussed in another section SET OUTPUT files FILE This allows the user to select the file location in which files will be saved START X AXIS FROM fe AFU LPL E i Lu i Start X Axis From End of Cable vV Sounds vV End of Probe i am End of Probe should be selected when testing with a probe End of Cable should be selected when measuring the reverence standards SOUNDS Turns the system sounds on and off SHOW CURSORS Selects or deselects the cursors USER MANAGER User Management Set Admin Password Save and Close User name and password is entered in this screen WINDOW
21. es Length of Ailme m 4 Known Impedance lohms Measured Impedance 53 53 Ohms Reset eoc 0 Verity Calibrate Cancel Jave E Note that the trace now goes almost completely across the screen The longer trace that you see is the 50 ohm single ended probe This indicates that everything is working If you do not see this the system is not working properly Next Click on differential and repeat the sequence attaching the differential probe The screen should now look like this ee i i i Single Ended Differential Trace Curent Calibration Lalbration Constant 19610 01 84 7 Operator 0 0 0 6 1 0 15 2 0 2 5 3 0 3 5 Inches Length of Aline ir 4 Known Impedance fohmsy Measured Impedance 106 56 Ohms Reset eoc 0 Yenky Calibrate I Cancel J Save Note that the trace is at 100 ohms and goes across the screen The system is working properly Next click on ACTIONS End of probe Find single In this step we are finding the electrical end of the probe tip This step is important because the measurements will be used in some of the automated features of the ST600 If you are going to do manual testing only this step can be Skipped but we don t recommend it Next repeat finding the end of the differential probe If you click on show a blue vertical marker will be placed on the trace indication where the launch point or where the test begins This feature is really useful when meas
22. gured for both single ended and differential impedance measurements and has everything the user needs to gather data store and report data to customers Measurement integrity 1s assured through a NIST traceable calibration path Controlled Impedance Testing The ST600 system The ST600 Controlled Impedance Test setup provides low cost automated measurements of the characteristic impedance of PCBs and coupons The system consists of any PC computer with USB2 ports an ST600 TDR and a printer for producing reports It should only be used on unpowered pcb boards and or coupons Characteristic impedance As the speed of electronic devices increases the electrical properties of the circuits carrying signals between them become more important At the high frequencies and clock rates of modern digital circuitry cables and PCB traces increasingly need to be considered as transmission lines In the case of PCB traces the series resistance and parallel conductance of the transmission lines are largely negligible aThe most significant circuit parameters governing performance are the distributed series inductance and parallel capacitance of the conductors These parameters give rise to the characteristic impedance Barring any dissipative effects such as dielectric leakage and conductor resistance the characteristic impedance of a transmission line is equal to the Square root of the ratio of the line s inductance per unit length divided by
23. hase During the warranty period Zmetrix will repair or at it s option replace any defective component s without charge for parts or labor The Zmetrix warranty applies only to products manufactured by Zmetrix Accessories and items not manufactured by Zmetrix are covered by the warranty of the original equipment manufacturer Product defects caused by misuse accidents or user modification are not covered by this warranty No other warranties are expressed or implied Zmetrix is not responsible for consequential damages Installation Installation of ST600 systems is not a technical or time consuming process The ST600 is a USB device and installation is primarily a software function The ST600 comes ready to take measurements Training in the use of the ST600 system is generally done by phone and on line go to meeting com During on line sessions the user will be trained in defining tests taking measurements saving and reporting data calibration and ESD safe operation of the system Help is always available via phone seven days week Service Service of ST600 systems is available directly from the factory in Utah Typical time to repair is just a few days if the system is sent overnight A Note on Repairs The typical repair for a TDR system is due to an ESD event originating at one of the input output connectors As part of the ST600 design these events are dramatically reduced when compared to our competitors Additi
24. l loosen and can cause erratic readings Click on ACTIONS CALIBRATE to bring up the CALIBRATION screen The ST600 defaults to single ended test Click on EOC End of Cable In this mode the ST600 tests the cables and determines their electrical length A popup will be displayed advising you to remove any probes Singe Ended Differertial Mace o Corte Calibrator 5 Characterizing Cable j Ensure that all airlines or probes are disconnected fram the Songle ended cable Meatued Impedarice Reset enc Werte Colete J Cancel Save Enawn impedance ahma Remove the probes and click on OK The following pop up will appear Please Wait When this pop up dissappears click on save Then click on verify Your screen should look like the one below E Single Ended Differential Trace Ohms Curent Calibration 200 0 150 0 Calibration Constant 100 0 25095 22 49 32 50 0 Uperator 0 0 i 00 05 10 145 20 25 30 35 Inches Length of Airline m 4 Known Impedance ohms Measured Impedance 1665 87 Ohms eoc 0 Notice that the beginning of a trace is observed starting at 50 ohms and going to the top of the screen Next attach the single ended 50 ohm probe Click on verify The screen should look like the screen below i i i Single Ended Differential Trace Curent Calibration Lalbration Constant 25095 22 49 32 Operator a0 0 5 41 0 1 5 2 0 2 5 3 0 3 5 Inch
25. minus tolerance may be locked where both plus and minus have the same tolerance or unlocked where each value can be independently set The tolerance must be set to a value in the range of 0 1 to 99 99 The value can also be set in ohms Trace Window This parameter defines the length of the measurement window For the best resolution this should be set to be just a little longer than the coupon for example for a 5 Ocoupon set the window to 60 Pass on average Selecting Pass On Average will cause the test to fail only if the average impedance value in the pass fail rectangle is out of tolerance This method is used most often when large numbers of vias may disturb the waveform Pass on absolute The system defaults to Pass on absolute In this mode the test will fail if any portion of the waveform touches any part of the crosshatch region even if the average may be within set tolerance This is covered on another page Loss compensation Caution Using loss compensation improperly could result in an invalid test A simple test is to test a trace from both ends If the slope is the same testing from either end series loss is present and loss compensation may be applied For all other measurements loss compensation should not be applied Loss compensation is covered in another section Propagation Velocity Vp For most applications leave the Vp setting at the default of 66 Vp is covered in another section USING EXISTING TEST
26. n itG entirety and the beginning of the curve or Nlaunch pointo being on the left side of the screen resulting in the best possible display EXAMPLE Assume acoupon length of 5 inches When you do an End Of Cable EOC check the system remembers the end and places it at the left hand side of the screen After you perform an EOC check you should attach the probe and do a Actions find probe function This will ensure that the AlaunchOis on left part of the screen It is critical that the impedance curve show the entire waveform so the setting for the TRACE WINDOW To should be set at the actual length of the coupon plus 0 5 to 1 inch The trace should look similar to the one below Note that the end of the trace is visible aeoo FEAT OS MNO ne Avg 80 76 StdDev0 78 a Min 79 36 Max 82 01 10500 7 Min Limit 68 25 Max Limit 81 75 a Min Pos 2 06 in Max Pos 2 26 in Prop 1 07 ns Delta 2 14 ns Dist Trace Result Average Serial Job Nu Layer Time Max Va Min Va Std Dev Operat SELECTION OF PASS FAIL MODE The ST600 defaults to absolute test mode That can be changed to pass on average by clicking the appropriate box in the edit screen Pass fail set in absolute mode The average is within tolerance but the curve is touching the line resulting in a fail For demonstration purposes we have tested a 75 ohm trace with the tolerance set at 9 The maximum allowable readi
27. n the Microsoft Windows environment Windows XP through Windows 7 is assumed running on an IBM PC compatible computer with USB2 ports The ST600 is controlled by keyboard and mouse A foot switch is provided for Mhands offO operation Note When running with a top computer the system is completely portable and requires no A C power as long as the computer batteries are charged TOSHIBA Complete portability The ST600 is powered from the computer via the USB It does not plug in to AC CONTROLS AND CONNECTORS SMA connectors The front panel SMA connectors should be connected to Zmetrix microstrip probes using Zmetrix cables CAUTION Tighten with care Use a torque wrench set to 5 lbf inches It is nearly impossible to get the SMA connectors tight enough with the fingers Connectors that are not tight combined with the stiffness of the test cables can create erratic readings USB2 Interface to the PC The host computer must have available USB2 ports Any newer computer will have them Most older computers can have a USB2 card added Consult your IT person IMPORTANT Install Zscan and USB2 driver software prior to connecting ST600 to the host computer via the USB cable ANTI STATIC WRIST STRAP While the ST600 is not overly sensitive to ESD but it is a good policy to wear the wrist strap when operating the system The wrist strap is plugged into the only other connector on the front panel ST600 Accessories The ST600
28. ng is 81 75 ohms The value tested is 80 76 well within tolerance but the test failed because the trace is touching the crosshatch area Ohms 125 00 115 00 105 00 g5 00 a500 75 00 TOTAL 0100 aha ooo eee ee Ave 80 76 StdDev 0 78 St heat ine ae GR Meh ga eas alee Par oe ABS cma Ya Watt et Tae Fe ee oe ee Min 79 36 Max 2 01 Min Limit 68 25 Max Limit 84 75 Min Pos 2 06 m Max Pos 286m 0 22 nano seconds Test 75 ohms 80 76 FAIL ee et eit pal tS se rai Pa a A i Poe F F j ate eet mie athe dee eee eee ye ee eee ee ee ee ee eee ee ae ee ee Oe ee 55 00 46 00 eene 35 00 sa eee Swe arts essssedpne eet vessesssseeneteenerse ses enh co 25 00 o0 10 Prop 1 07 ns Trace Result Average Serial Job Nu Delta 2 14 ns Layer Time Max Va oe ae 3 0 Min Va ABSOLUTE MODE Tt a kk oe a a ae a ee oe ee ed a el a ke ke 4 07 4 9 Inches Dist 4 03 in Std Dev Operat AVERAGE MODE The identical waveform tested in the average mode results in a pass because PASS is based on the average impedance value in the test zone A rectangle has replaced the crosshatch DATALOG PANE This is the datalog portion of the screen All of the test results are displayed here Trace Name Result Average Serial Num Job Num Layer Time Date Max Value Min Value Std Dev Operator 75ohmiayer1 PASS 8122 O01 2345 1 01 23
29. onally those same design features dramatically reduce the cost of a repair due to ESD These repairs typically cost less than 1 500 U S This is also dramatically different than our competitors Controlled Impedance Measurements Signal integrity in electronic circuits is becoming more important to designers as clock speeds and data rates move ever upward The continual trend towards higher speed circuits is finding its way into the full spectrum of electronic devices They can now be found in everything from cell phones to space vehicles One of the factors in designing quality signals in electronics is the impedance of the pc board trace signal path Most designers now use software modeling tools to predict the effects of trace width pc board material and signal path geometries in the pc board itself A successful circuit design then requires that the pc board after manufacture complies closely with the design parameters used in the software tools PC board manufacturers are being asked now by their customers to provide data as to their compliance with these design parameters One method for testing compliance is the use of a controlled impedance test system to measure the pc trace impedance for either a test trace on the board or traces on a representative coupon located on the fabrication panel The ST600 is designed to provide manufacturers with a complete application solution for controlled impedance measurements The system is confi
30. rd pin separation is 0 100 Different pin spacing and or configurations are available on special order Please do not attempt to repair the probe it is a consumable Measurements made with repaired or modified probes will not be guaranteed by Zmetrix Impedance measurements are polarity sensitive The ground pin is the pin soldered to the copper side ia ae This is the Ground Side Installing the Zscan Software To install the ZscanE software Go to www zmetrix com Click on Software then click on download The Zscan software should load automatically If you are loading the software from a CD Step 1 Insert the ZscanE CD into your CD drive The autorun feature of the install software should automatically begin the installation procedure Step 2 Click GNextOuntil you come to the License agreement dialog After accepting the license agreement click GNextO You should now be at the Destination Folder dialog Here you choose a directory on your hard drive for the application The default directory is C Program Files Zmetrix Zscan Click GNextOto accept the default directory Step 3 Click GnstallOto install the files to the hard drive You will see a message instructing you to attach the ST200 device after the installation finishes Click GOKOto continue Click GinishG Step 4 Plug in footswitch to the PC You should see a message asking where to find the driver for this device Select the option that specifies a location
31. t and most efficient way to create a coupon test program is to make use of copy paste and edit functions Start by right clicking with the cursor in the test definition pane to bring up the test editor Identify the first track however you wish for example 75 ohms layer 1 You can test the tracks in any sequence however it seems logical to start at one side of the tracks and sequence through to the other side In this example we are starting with the 75 ohm layer one as the first test 50 ohms layer 1 next In the edit screen e Set target value at 75 ohms e Set Starting Position at 2 This will be changed e Set ending position at 3 This will be changed e Set Trace window at 5 because the track lengths are 4 e The system defaults to absolute Pass Fail leave it there for now e The Tolerance defaults to 10 If you want to change it now is the time e Leave Loss Compensation and Vp in the default value Click on Save The first test is now programmed Notice that it appears at the top of the test definition Pane File View Actions Window Help JAA GOLO eT 75 ohms Layer 1 Next step is to validate this test and make any adjustments so probe the appropriate pads and test When you click on the test it will be highlighted with b ue XL L2yer coms 125 00 17 06 11 14 22 08 nsoo AVE 80 53 StdDev 0 04 00i are Min 80 49 Max 0 61 405 00 din Limit 67 50 Max Limit 2 0
32. talog pane will result in this popup Delete Coupon Print Preview Print Select Columns Report On gt Sort By gt Fdit Coupon Export gt
33. ted by inserting values in the appropriate windows Test Name Enter trace description for example 100 ohms differential This is what will appear in the Test List Pane for the trace Target impedance Enter the expected impedance value Channel Select Single 1 Single 2 or Differential or Differential A LAYER Enter layer number if you want to show on test definition Pass on average Clicking on Pass on Average sets the ST600 to pass fail readings based on average In the selected test zone Use Aggressive Deconvolution Sets the ST600 to test using the Aggressive deconvolution algorithm see explanation Measurement Region as a Percentage Range Sets the pass fail window based on a percentage of waveform for example pass fail window starts at 50 of the window and continues to 70 of waveform Starting Position and Ending Position These parameters define the location of the Pass Fail window Trace window defines the width and position on the pass fail region on the displayed waveform This allows the user to avoid testing in a region where the waveform may be ringing typically immediately after launch on the left side of the waveform A typical pass fail window would start at the 50 point of the waveform and end at the 70 point of the waveform These setting are preliminary and can be adjusted in a later step Allowable error Test Tolerance This sets the test tolerance about the nominal impedance The plus and
34. the test process very fast As you test and save data will accumulate in the datalog pane Saving the program will create a tds file which you can send to your customer or archive Testing Hints If you get this message you probably have another instance of Zscan running TDR not ready The TDR hardware is not responding x anne If you are trying to test a differential trace and the test is failing badly make sure you have clicked on differential in the screen editor Be sure you are observing probe polarity DATALOG This is the datalog pane Trace Name Result Average Serial Num Job Num Layer Time Date Max Value Min Value Std Dev Operator 7Sohmiayer1 PASS 81 22 001 2345 1 01 23 10 10 21 43 81 34 80 82 0 15 jm 50ohmlayer1 PASS 527 99 001 2345 1 01 23 10 10 21 43 53 09 52 82 0 09 jm 37 50ohm layer 1 PASS 34 41 001 2345 1 01 23 10 10 21 43 34 71 34 32 0 10 jm 50 ohm layer 2 PASS 48 46 001 2345 2 01 23 10 10 21 43 49 56 4725 0 71 jm 50 ohm layer 12 FAIL 5788 48 001 2345 1 01 23 10 10 21 43 7526 89 5169 09 698 12 jm 75 ohm layer 12 FAIL 6164 32 001 2545 1 017 23 10 10 21 45 8437 29 5313 00 972 68 jm 7Z5ohmilayerl PASS 80 48 002 2345 I 017 23 10 10 24 01 80 54 80 36 0 05 jm 500hm laver1 PASS 52 11 002 2345 1 01 23 10 10 24 01 52 16 52 10 0 02 im am Passed tests are printed in green Failed tests are printed in red A click on any test will display the results of that test A right click anywhere in the da
35. uring short traces 1 2 inches Note Do not click on the RESET button This resets the calibration of the system 25 0 Inches Reset eoc a Next click on Actions End of probe find single Repeat for differential LdP LotdMolripil E e i _ e File View Window Help al gt Perform Test Calibrate Live Mode Ohms Log Coupon Data 100 00 Insert Trace Def Create Report b w me Setati End of Probe b show Preferences b Find Single Set Next Serial SETTING the X AXIS Window Help Perform Test Calibrate Live Mode Log Coupon Data Insert Trace Def Create Report j End of Probe k Preferences j Set Next Serial Company Info Colors Auto Advance Auto Log Set Auto Log Delay Set Directories Default Test Def Set Output File Start X Axis From ne E E at ef i ee he S ed l b End of Cable x End of Probe Click on ACTIONS PREFERENCES START X AXIS FROM In most cases you will want the trace to start at the left side of the screen so the selection is End of Probe If you want to measure the provided standards select End of Cable The screen below shows the start of the test beginning near the center of the screen Now that the cables and probes have been checked and setup click on Actions Insert Trace Def The screen should look similar to the screen below File View Actions Window Help Jamgoeco teady Ohm
36. will see the screen below Allowable Error Locked Ohms Target Impedance Ohms Layer 50 0 Plus 10 0 Minus 10 Units Ohms per Division Inches 10 Ohms Loss Compensation Detault liser starting Position Ending Position 3 00 i 400 i 0 00 Ohms in Trace Window Start at 5 0 in From UUU in To 5 00 Fropogation Velocity Channel Single 1 a Default a D66 __ Use Aggressive Deconvolution Fass on Average E i Cancel Measurement Region as a Percentage Range Save When you are primarily testing coupons there are several parameters which are always the same Assuming your company uses one standard length of coupon 5 inches for example We can safely set the Trace Window the location of the pass fail window These parameters will probably always be the same If there is a need to change them it is easily accomplished All defaults can be overwritten TARGET IMPEDANCE We suggest a setting of 50 ohms as a default because is the most common impedance value UNITS Should be set to your normal measurement values OHMS PER DIVISION The system defaults this value to 10 ohms per division We suggest leaving at this value unless you have aneed to change One reason for another setting would be when comparing screenshots with a Tektronix usually more Y axis sensitivity TRACE WINDOW The proper setting of the trace window will result in the displayed impedance curve being shown i
37. x Va Min Va Std Dev Operat There are no items to show in this view This popup should appear The program will default to 50 to 70 We recommend keeping this setting however you can set to your choice The remainder of the tracks can now be programed The easiest and fastest method is to copy and edit so click on the 75 ohm test to highlight right click and copy Paste 5 copies below the 75 ohm test You now have six identical tests Starting with the next test in the sequence 50 ohms click on the definition to bring up the test editor and insert the changes Test name target impedance etc leave everything else as programmed for the 75 ohm test they are the same Click on save and do the same for each remaining test When you edit the differential pair remember to click on differential in the edit screen single 1 single 2 Pass on Average Measurement Region as a Percentage Range Select Differential A You have now programmed a 6 track coupon and the test list should look like the one below L Al fd 75 ohms Layer 1 50ohms Layer 32 5 ohms Layer 50 ohms Layer 50 ohms Layer 75ohms Layer ie LA tid 41 F fF HEF on That it You have programmed a coupon with six tracks J iri Pr ns Del 3 ns Trace Na Result Average Serial Num Job Num Layer Time Date Max Value Min Value Std Dev Operator T5ohms PASS l 11 06 11 BLA 80 23 50 ohms PASS 37
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