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CSA8200 User Manual

1. 80A05 module Data input Dual SMA cables 80A03 TekConnect probe interface O000 g E e 80A03 L ES Y 7 C O 80E0X module a Aux Out P7380 Figure 6 Differential to single ended probes setup example CSA8200 amp TDS8200 Series Quick Start User Manual 61 Using the 80A05 Electrical Clock Recovery Module Examples Vertical Gain Adjustment 62 If the signal is passing through the Input of the 80A05 module it might be necessary to adjust the signal for accurate Vertical Scale Since the TDS8200 and CSA8200 mainframes have a built in calibration voltage this is a simple procedure oe L So O OC DC CALIBRATION OUTPUT 80Exx module 80A05 module Figure 7 Vertical Gain Adjustment 1 of two channels shown After the connections are made select the Setup gt Vert menu set the DC CAL calibration voltage to an appropriate value and adjust the value in the External Attenuation window to achieve the proper voltage reading as measured with a Pulse Mean measurement NOTE The output impedance of the DC CALIBRATOR OUTPUT is close to 0 22 If this is a differential setup repeat for both inputs This procedure applies equally well if a probe is connected to the input of the 80A05 module For example both the P6150 and the P6380 probes can be ca
2. Aun Stop Default Setup Calibration Compensation Diagnostics Spstem Properties User Preferences Wlavetorm Properties Option Installation 18 CSA8200 amp TDS8200 Series Quick Start User Manual Select the Subsystem Level tab select all the entries by clicking the first entry Control Proc and dragging down to select the rest All entries should be highlighted as shown above In the Run box leave Loop and Halt on Failure unchecked Click Run Verify that Pass appears as Status in the dialog box when the diagnostics complete If diagnostic failures occur contact your local Tektronix service personnel CSA8200 amp TDS8200 Series Quick Start User Manual Inspect Your Instrument Subsystem Lever Area Level Test Level Failures 0 0 i Loop 0 A Halt on failure Loop count Subsystem Acquisition 8 Area Vertical Test A D Convert DAC Load Tektronix Close Help 19 Optimizing Measurement Accuracy Optimizing Measurement Accuracy This instrument can compensate itself and the sampling modules installed optimizing the internal signal path used to acquire the waveforms you measure Compensation optimizes the capability of the instrument to make accurate measurements at the ambient temperature NOTE After first installing a sampling module s or moving a sampling module from one compartment to another run Compensatio
3. 0 cc ccc eee ene e eee n teen eee nee nnes 28 Setting the Display Style 0 0 tenet eee e eee e eee n ene neees 29 o A ee A and wae Sad aed e ee eee A ee det Oe ee estes be ek eh eee s 30 Triggering Concepts 0 ccc cc ee eee eee eee teen teen eee b eee eneenes 30 o eegener wr at eee cea ara op cide er gh a tide ook pee cee ob were eee oie aw i 30 IGOR DE cre ronca q ci ro perio a R e ia cab ede eae ede ek eh ews 30 Trigger Modes aca parar pea rad arg pardillo ae denia a de eee ee ade lio 30 TH GE SOUNCES e arios cttw dn cade ra ie eee eee oie a kee ae Ee S 30 Trigger Source Connectors snanu anaana een eee teen e en eee een nee nneas 31 Gated Trigger Connector Option GT Equipped 0 0 aaaea 32 Enhanced Triggering ccc cee ee eee ene eee nett nena 32 is Sr 32 Setting Trigger Controls eee nen eee nent teen e ene e eens 34 Setting Pattern Sync Controls 0 eee ne ene eee tenet ene e eens 35 Checking Trigger Status 1 eee nee teen e nen eee n teen eens 36 CSA8200 amp TDS8200 Series Quick Start User Manual i Table of Contents Analno WAVES seria isd er Sula ANDAN eas ta nate 37 Taking Automatic Measurements e e lt e e eee e eens 37 Turning Off Automatic Measurements e eee e nent e eee n teens 41 Cursor Measurement TT iria ts Aids 42 Mall WaVel0MS asninn ne tn re sasha tie inact da A AAA Dated Sd 44 WaVelom Dalabases ui dis 46 Display a Communication Signa
4. TDS8200 Series Quick Start User Manual FrameScan Analyzing Waveforms Use FrameScan to test a specific bit or range of bits in a repeating frame of data FrameScan acquisitions allow detailed display and analysis of individual complete waveforms or of the bit sequences leading up to a failure This ability to identify the specific patterns that caused the failures makes using FrameScan mode superior to traditional methods 1 FrameScan is accessed from the Hori zontal Setup menu 2 Click Enabled in FrameScan 3 Click Auto Position 4 Set the Start Bit to specify the starting bit location for the scan when FrameScan Auto Position mode is on 5 Set the Scan Bits to the number of bits or subframes you want to acquire Quick Tips Setups E ES wim Database Hist Cursor Meas Phase Ref Mask TDR Disp Di Horz Acq Trig Timebase Scale 763 Srnbitsiciv aH Position 57 32bits Resolution 6 140ps Record Length oo aH Horizontal Reference 100 0 All Timebases Mode Lock to Int 1OKMHz lt Units C Seconds Bits Distance Comm Standard None K Bit Rate 2 4883200Gbps ee Ea Enabled 2 Auto Position man Scan Bits o o an File Edit Yiew Setup Ulilities Applicat fp 52 Waveforms HMskT otal 565772 of 750 Tektronix x El fe TM 7 Run Stop Sample 7 Trig E xtemal Direct 7 2 Soom SZ pe h Pulse T Amplitude fut nnn y ome nr 300 nn SS 572 a
5. OS CH7 CH6 CH1 module not installed CH3 module installed A 63 CH5 CH6 CH7 CH8 CH1 module installed CH3 module not installed ont paz eS CH4 CH5 CH6 CH7 CH8 Install Your Instrument Powering the Instrument On and Off 1 Insert AC power cord 2 Toggle the mains switch to on Y 3 Use the front panel power button to switch the instrument on and off Quick Tip SD A Sy 5 ST eG 5 5 2020 O IDO 2 A O O O m When turning off the instrument Windows and all applications automatically shut down before the instrument powers off T CAUTION To prevent damaging the modules do not install or remove any modules while the instrument is powered on CSA8200 amp TDS8200 Series Quick Start User Manual Install Your Instrument Creating an Emergency Startup Disk Create an emergency startup disk that you can use to restart your instrument in case of a major hardware or software failure Store this disk in a safe place 1 Select the minimize icon gaining access to the Start menu External Direct Z 2 Select Start gt Programs gt 2 Accessories gt System Tools gt n YER Application Backup i Es My Network larez T E im Programs A EN 3 Select Emergency
6. and Ethernet to test your signals or define your own masks 1 Select the waveform to be mask tested from the drop down list under Source Wim Database Hist Cursor Meas Vert Harz Acq Trio 2 Select a standard mask in the Mask set veel Mask ng OC 1 STM 0 up dialog box Selecting a communica ca ant tion standard or user defined mask auto o B ATMA l MainC1 4 Y Enable Mask Counts J matically a 0C 19 None DC 24 Displays the mask on screen and Ethemet 00 36 autosets for the mask if Automatic is iv Use Win aba a claw Dala Fibre Channel Optical DC 48 5TM 18 checked in the dialog box Sete Channel Electrical K FEC2 666 Gb s InfiniBand K QC 192 STM 64 9 Coo A rapid IO e FECIO 71 Gb s Displays mask count statistics in the oe A UNS ESS ese k readout A mask does not dalla AE a a mas v SONET SDH d FEC43 02 Gb s have to be displayed to have mask FI N counting enabled User 3 If you want disable mask counts Se lecting a mask in step 2 automatically enabled them 4 Check Use Wfm Database to use a wa veform database as the waveform source 5 If you want you can enable margins to Mask Margins explore design margins of your Mon Maran 0 EZ communications signal y CSA8200 TDS8200 Series Quick Start User Manual To autoset the waveform to mask 6 Click the Autoset button to perform a manual autoset on the mask source wa v
7. clock if more than one phase reference module is installed 4 Select the input frequency to the phase reference module Use the Input Freq control to enter the frequency of Phase Reference clock or use the Standard Freq Table button to select a communications standard appropriate for the Phase Reference clock 5 Press the Characterize button to charac terize the clock signal attached to the phase reference module Quick Tip S When entering the phase reference clock frequency the value must be within 1 of the actual frequency CSA8200 amp TDS8200 Series Quick Start User Manual 53 Analyzing Waveforms Histograms The instrument can display histograms constructed of waveform data You can display both vertical amplitude and horizontal time or distance histograms but only one at a time 54 1 Display the Hist Histogram dialog box 2 Check the Enable Histogram box 3 Click the Source button to select the wa veform source 4 Select a vertical or horizontal histogram 5 Click and drag the edges of the histo gram box to enclose a portion of the wa veform 6 The histogram displays at the edge of the graticule The histogram statistics are displayed in the readout Setups Phase Ref Mask TDA Disp Yet Hoz Acq Trig wim Database Hist Cursor Meas pae o o o ES S Enable Histogram Vertical Horizontal L o 4 APS FP Use Wim Database Clear Display Opti
8. Compensation File Edit Wiew Setup Utilities Applications Help Zika fe nE D efine Autoset i A utoset Pulse Amplitude gt Undo Autoset Aun Stop Default Setup Calibrations Compensation a 2 Diagnostics System Properties aer Graber Sa 5 In the Compensation dialog box the main instrument mainframe and sam pling modules are listed The tempera jon SS ture change from the last compensa et ae c c i ainfame tion IS also listed tee Serial fe Date lime m Select Action CSA8200 BONO 27 Mar 04 12 58 O Save 6 Wait until the Status for all items you Upper Modules si Serial Date Time Te ee Compensate want to compensate changes from SUCIO A 27 Mar 04 12 58 0 350 i pani Warm Up to Pass Fail or Comp and Save Req d Serial Date Time 7 Under Select Action select Compen 1 Overrideen by upper module E sate and Save default T ps 27 Mar 0412 58 Pass 1 1 C T d G0E04 BLOW 27 Mar 04 12 50 Pass 1 1 C f User 5 62404 90710100 27 Mar 04 12 58 Pass 0 8 oa 8 From the top dropdown list choose All ee A ee default selection to select the main 8 Execute instrument and all its modules as tar Fee ma owe S Y Display Y Animate e ose gets to compensate EETIEEN 9 Click the Execute button to begin the compensation Follow the instructions to disconnect inputs and install terminations that appear on screen be sure to
9. Diff to auto matically setup the differential measure ment for the channel pair All the tasks listed in step 2 are performed for both channels and the pulse polarity of the second channel is set to negative 4 Click the polarity button to toggle the step edge 5 Set the vertical scale Units to V volts Q ohms or e rho 6 If performing differential TDR select the channel TDR module with dual channel adjustment or the even numbered chan nel of the channel pair TDR module with single channel adjustment for deskew ad justment 7 Set the Deskew percent value 8 Press TDR Autoset Properties to display the Autoset Properties dialog box to pre pare the TDR autoset Quick Tip m Use a lower internal clock rate to examine long cables Setups EE wim Database Hist Cursar Hea Wert TS Acg Trig dse MEI rl dar e TDR Disp TOR Step ACG Preset Ir 7 Deskew 7 TOR utoset Properties __ Fora TDR module with single channel deskew capability only the even numbered channel of the module is selectable for deskew For a TDR module with dual channel deskew capability both channels of the module are selectable for deskew Refer to Differential TDR Deskew Method beginning on page 67 for more information bout TDR deskew 92 CSA8200 TDS8200 Series Quick Start User Manual Analyzing Waveforms Phase Reference Use the Phase Reference Module an
10. Functions Ina Ent Vita Filter Risetime fi 000s S 5 Filter Mode Centered lt pr Scalars DK Aw Cancel Help a If you select a waveform that is already defined its math expression appears in the dialog box To use the waveform click the Clear button which discards its previous math expression CSA8200 amp TDS8200 Series Quick Start User Manual 45 Analyzing Waveforms Waveform Databases The available four waveform databases can be used for measurements histogram calculations mask testing and generating a density style graded display Waveform databases may be automatically allocated for measurements 46 histograms and mask testing 1 Click Wim Database in the Setup dia log box 2 From the pulldown menu under Data base select one of the four available databases 3 Click the Source button to select the waveform source 4 Click On to start accumulating data from the selected source 5 Click Display to turn on the display of the waveform database 6 Select the Persistence mode for the selected waveform 7 If you selected Variable persistence you can specify the number of wave forms that are included in the wave form database The following Display Options affect all waveform databases that you display 8 Click a grading display option 9 Click Invert to emphasize the least oc curring pixels by reversing the intensi ty color assignments
11. Repair Disk and follow the on screen instructions CSA8200 4 TDS8200 Series Quick Start User Manual T Install Your Instrument Adding a Second Monitor You can operate the instrument while using Windows and installed applications on an external monitor Use the Settings tab in the Windows Display Properties dialog box to set up a dual monitor configuration Both the oscilloscope and the second monitor must have the color setting set to True Color 1 Power off the instrument gt Soom z E gt a a O JO LS E C O O O O LJ 2 Connect a video cable not supplied O R A from the video port on the back of the S a instrument to the external monitor S External monitor 3 Power on the instrument 4 Power on the external monitor 0 000000009 0C Moog te CSA8200 amp TDS8200 Series Quick Start User Manual 5 Inthe Start menu select Settings and then Control Panel 6 Select Display 7 Inthe Display Properties window se lect the Settings tab 8 Select the second monitor 9 Select Extend my Windows desktop onto this mon
12. SIGNAL IN of 80A05 Optical signal in 80C12 optical module Figure 3 Clock recovery trigger with the 80C12 and 80A05 modules setup example 58 CSA8200 amp TDS8200 Series Quick Start User Manual Using the 80A05 Electrical Clock Recovery Module Examples Differential Clock Recovery and Acquisition In this example the 80A05 module s Electrical Output signals are connected to an electrical sampling module s such as an 80E03 with a set of differential cables A matched set of coaxial cables is recommended for both the connection between modules and the connection to the DUT 80E03 sampling module Input signals 80A05 module Figure 4 Differential clock recovery and acquisition setup example CSA8200 amp TDS8200 Series Quick Start User Manual 59 Using the 80A05 Electrical Clock Recovery Module Examples Probing with Low impedance Probes Low Capacitance Probes also called Z0 Probes or Controlled Impedance Probes are passive probes that have very low input capacitance and low input resistance These probes are a useful choice for some applications However because the input resistance on these probes is low they can cause measurement errors Passive probes such as the P6150 with 10X probe tip and the P8018 Handheld TDR Probe when used with with good quality cables can typically probe systems approaching
13. To quickly return to the factory default settings push DEFAULT SETUP Ka ra 4 N 2 Click YES to restore the settings TDS CSA8000 N Loading the default setup will replace the current setup Continue Yes No 26 CSA8200 4 TDS8200 Series Quick Start User Manual Accessing the Setup Dialog Boxes 1 You can access the Setup dialog boxes by using the front panel buttons the file menu or the tool bar 2 Click on the tabs to select among the setup dia log boxes CSA8200 amp TDS8200 Series Quick Start User Manual Acquisition SETUP DIALOGS m VERTICAL ACQUISITION L AORIZONTAL TRIGGER gt MENU MENU L es Whey Setup Utities Applica eill Pulse Ara Vertical Horizontal Acquire Trigger Measurement Mask Display Histogram Lursors Wit Database TOR Phaze Reference hase Ref Mask TDR Disp Wert Horz Acg Trig Wim Database Hist Cursor Meas 27 Acquisition Changing the Acquisition Mode Use the procedure that follows to set the data acquisition mode and specify acquisition start and stop methods 1 Press the Acquisition MENU button to display the Acq Setup dialog box 2 Select the acquisition mode 3 For Average mode enter the number of samples to average 4 Set the Stop After mode and action by selecting one of of the following options Run Stop Button Only Condition 5 If you selected Condition choose a
14. a TTY 0 Ar ala fs dd SCANNING Bit 5 7 Wavefom AS ds i A C1 50 004 wiv Frame sync pulse Repeating data stream c1p V Masa hig 1 CD A OC 12 5THA l Mask1 0 a PS A Hw i Mask2 83 For a THT H Keel Gr Or FY YP D 971 9 V SCANNING Bit 5 545e 008 Total 83 Waveforms 110 ini ica senta D eet OOOO oa powo apa S man A A 100001 RIZ beau mf 9205 3 17 00 The Start Bit control determines the starting horizontal position that FrameScan uses for each acquisition scanning cycle The Auto Position control must be on to use the Start Bit The Auto Position control is disabled when the Trigger Source is set to Pattern Sync When using Pattern Sync use the Relative Trigger Bit control in the Pattern Sync configuration settings CSA8200 amp TDS8200 Series Quick Start User Manual 51 Analyzing Waveforms To Use TDR To take TDR measurements you must have a TDR capable sampling module installed and your network must be attached to the TDR sampling module 1 Select TDR from the Setup menu 2 Click the channel button to automatically display the incident and reflected steps by automating the following tasks Turns on the channel Turns on a step Sets trigger source to Internal Clock Sets acquisition to Averaging Changes display style to Show Vectors 3 Select a channel pair to perform a differen tial TDR measurement Press
15. cocon ooo Fat Use an independently calibrated average optical power meter to measure this power precisely Then connect the signal to the optical a module using the same fiber cables 9 l C O O O O 6 In Vert Setup dialog box click the User Compensate Wavelength Gain button under Com TO pensation Follow the instructions on mee screen 6 User Wavelength Gain 7 Inthe User Wavelength Gain Com pensation dialog box set the wave length and power of the signal to be renee EE ae applied to the channel a ower af 8 Press the OK button to execute the 8 m5 S compensation CSA8200 amp TDS8200 Series Quick Start User Manual 23 Acquisition Acquisition This section contains concepts of and procedures for using the acquisition system Detailed information is available in the online help Setting Up Signal Input Use front panel buttons to set up your instrument to acquire the signal 24 CAUTION Sampling modules are inherently vulnerable to static damage Always observe static safe procedures and cautions as outlined in your sampling module user manual 1 Connect to the signal to be acquired using prop er probing connecting techniques See the user manual for the sampling module you have cho sen Connect an appropriate trigger signal to the i
16. condition to stop on from the drop down list If the condition requires a count enter a count 6 Select a Stop Action action from the drop down list Choose from the following actions None Print Screen to File Print Screen to Printer Save all Waveforms Enter a filename if you ve selected Print to File or Save all Waveforms 7 Select Ring Bell if you want an audio notice when the acquisition stops 8 Press RUN STOP to start the acquisition 9 Press RUN STOP again to stop the acquisition Quick Tips ACQUISITION Setups EI x Phase Ref Mask TDA Disp tfm Database Hit T Meaz Yet Horz Aac Trio Ie M T a Sample C p n o Ti C Envelope PIi e Stop fter Run Stop Button Only C Condition Number of Y Bin Stop Nome ime T Filename l Ring Bell pn ACQUISITION s p CLEAR RUN MENU DATA STOP 9 Run Stop is available on both the front panel and the touch screen If Stop After is set to Condition pressing RUN STOP causes only one acquisition to run if the original condition has been met You need to press CLEAR DATA so that the condition must be met again 28 CSA8200 TDS8200 Series Quick Start User Manual Setting the Display Style 1 Select Disp to start setting the display styles 2 Choose a display style Normal selects a display with no acquisition data persistence Waveforms are displayed with the
17. follow static precautions see the user Sts teed a aa 144 ee information for your sampling module gsi S E E l when following these instructions ca lt I BE pov BE ran GQ foo coors aj Ren SZ BPG 1 18 PM 3 27 2004 10 Verify the compensation routines pass If Fail appears as Status rerun the compensation If Fail status continues and you have allowed warm up to occur the module or main instrument may need service 11 Use the Compensation Indicator Button control to display or hide the indicator on the main display Green indicates all modules have been successfully compensated Red indicates one or more modules require compensation CSA8200 amp TDS8200 Series Quick Start User Manual 21 Optimizing Measurement Accuracy Perform Dark Level and User Wavelength Gain Compensations Performing a dark level compensation maximizes the accuracy of the extinction ratio and other optical automatic measurements you take Performing a User Wavelength Gain compensation optimizes an optical channel for your custom input signal NOTE Dark level compensation performs a subset of the module compensation process It is designed to be fast so it can be performed frequently just before measurements are taken This compensation is not saved and is only valid for the selected bandwidth or filter path and the internal optical power meter You should perform the procedure Signal Path Compensation on page 20 to compensate al
18. of the differential signal bypassing the 80A05 module for the moment For example you have channel 1 of an 80E02 module available for acquisitions connect the branch of the electrical signal to CH1 note the position you can save it as a reference waveform disconnect the branch from the CH1 and terminate it properly connect the branch to CH1 and use your deskew adjustment to remove the skew Refer to Methods to Adjust Out Skew on page 66 NOTE This signal should have a repetition rate much lower than the amount of skew that needs to be removed so that the relative skew between the signals can be correctly determined No Trigger Zero Skew Signal Available Using Internal Clock Output from front panel Use the INTERNAL CLock Output signal on the oscilloscope as the signal source into your differential probe or circuit first for one branch then for the other CSA8200 amp TDS8200 Series Quick Start User Manual 65 Skew and Deskewing Set the oscilloscope trigger source Trigger setup menu to Internal Clock Setting the trigger source to Internal Clock also enables the INTERNAL CLOCK OUTPUT connector If you have a channel available for acquisitions such as CH1 connect the oscilloscope end of the branch of the cabling fixture you are deskewing to CH1 and the DUT end of the branch of the cable to the INTERNAL CLock OUTPUT signal on the oscilloscope Note the position of the signal e g save as a reference waveform Wi
19. only enough liquid to dampen the cloth or applicator Clean the exterior surfaces of the chassis with a dry lint free cloth or a soft bristle brush If any dirt remains use a cloth or swab dipped in a 75 isopropyl alcohol solution Use a swab to clean narrow spaces around controls and connectors Do not use abrasive compounds on any part of the chassis that may damage the chassis CAUTION Avoid the use of chemical cleaning agents which might damage the plastics used in this instrument Use a AN 75 isopropyl alcohol solution as a cleaner and wipe with a clean cloth dampened with deionized water Use only deionized water when cleaning the menu buttons or front panel buttons Before using any other type of cleaner consult your Tektronix Service Center or representative Flat Panel Display Cleaning The instrument display is a soft plastic display and must be treated with care during cleaning CAUTION Improper cleaning agents or methods can damage the flat panel display AN Avoid using abrasive cleaners or commercial glass cleaners to clean the display surface Avoid spraying liquids directly on the display surface Avoid scrubbing the display with excessive force Clean the flat panel display surface by gently rubbing the display with a clean room wipe such as Wypall Medium Duty Wipes 05701 available from Kimberly Clark Corporation If the display is very dirty moisten the wipe with distilled water or a 75 isopropyl alcohol soluti
20. parameters are set in the Trigger Setup dialog window 1 Press the trigger MENU button to TRIGGER gt display the Trig Setup dialog box wim Database Hist Cursor Meas menu Phase Ref Mask TOR Disp 2 Select a trigger source External Di Vet Hoz Acq Tig e rect Pattern Sync External Prescal er Internal Clock and rate Clock Re covery Source and rate with C1 and C2 selections rigger S ounce K Extemal ra O C Pattern Syne Pattern Syne Setup l PA C Estemal Prescaler Internal Clack 200kHe Clock Recover gt Clock Recovery Outputs C1 None y BIZ _ F atem SHAG Pyne ve oe lal n 3 Select a trigger mode Auto or Normal 4 Select the trigger slope 5 Select a trigger level Click Set to Hone zj berre 50 to automatically set the trigger piles i 2 O level to 50 of the trigger signal 3 C Auto Normal a e j Level A o 231 1mv a set to 50 6 Set the trigger holdoff value Enhanced Trigaerina High Frequency Triggering 7 Select an Enhanced Triggering Gated Trigger setting E Haldatt S 000 s aH o Han c eo n O 8 Ifthe trigger source is set to Pattern H l Sync select Pattern Sync Setup to display the Pattern Sync dialog box Quick Tips Selecting External Direct as the trigger source requires an appropriate trigger signal be connected to the TRIGGER DIRECT INPUT c
21. se al la lD 110 fA a 5S off by clicking its button measurement buttons to Characterize Pass Phase Reference Status measure the selected aos Indicates the E characterization status of Measurement the phase reference module Freq C3 L e DA1427IGHZ N A Readout Right click any readout to display a short cut menu providing handy access to often used setup controls and properties for the feature associated with the readout waveform Display Live reference and math waveforms display here along with cursors masks etc to analyze them O A A A A A PERTE A e Readouts Display up to O five readouts in this area KA selectable from the Waveform Bar Access to Jo fora po aa fun Oy 215000 BI REl 1 16 PM 3 27 2004 Readout Bar waveform selection click waveform position drag and waveform properties right click Controls Bar Quick access to waveforms and __ Compensation Indicator Indicates the timebases for display and to their scale offset and compensation status of modules and position controls for adjustment mainframe CSA8200 amp TDS8200 Series Quick Start User Manual 13 Getting Acquainted with Your Instrument Control Panel Start and stop acquisition Adjust most control fields in setup dialogs Press the Select button to switch among fields Press the Fine button to toggle between normal and fine adjustment Clear all channel waveforms at once Menu buttons quickly
22. testing rates is determined by the specific modules that are installed High precision time base with two modes of operation locked and short term jitter optimized Negligible long term jitter degradation lt 0 1 ppm which substantially improves the ability to view signals that are delayed far from the trigger point without distortion Improved short term and long term trigger jitter A gated trigger option Option GT that lets you disable or enable gate triggering based on a TTL signal you connect to the instrument rear panel This Option allows you to use recirculating buffers as part of your test setup to simulate the effects of very long optical links that are typical of undersea cables and long terrestrial links Analysis and connectivity tools enable the instrument to be controlled from a variety of local and remote environments and to share data with other commercially available analysis programs Predefined built in masks in addition to the user defined masks A large 10 inch color display that supports color grading of waveform data to show sample density An intuitive UI User Interface with built in online help displayable on screen 2 CSA8200 amp TDS8200 Series Quick Start User Manual Install Your Instrument Install Your Instrument Unpack the instrument and check that you received all items listed as Standard Accessories Recommended accessories and probes instrument options and upgrades are lis
23. the SMA connectors connected to the 80A05 If you are also viewing the signals out of the 80A05 module for best results you need to deskew again this time from the 80A05 module to the sampling module s inputs This is shown in Figure 9 64 CSA8200 amp TDS8200 Series Quick Start User Manual Skew and Deskewing Deskewed at input to sampling module Input signals Deskewed at input to 80A05 Figure 9 Deskewing multiple input signal paths with the 80A05 In cases where there is an insignificant amount of common mode signal between the differential branches this might be all the deskew you need you might not need to deskew to the 80A05 module inputs Keep in mind that depending on the bit rate the accuracy required and your cabling you might not need all of the deskewing steps Here are some practical examples of deskewing your signals in different situations Trigger Present Known Fast edge Signal Present If there is a trigger signal that you can rely on while you are deskewing your differential signal and there is a known fast edge that is or can be connected to your DUT deskew with this signal If the target is an 80A05 module and as such has no acquisition of its own use any single acquisition channel available in your setup to measure the horizontal position of first one then the other branch
24. 00 amp TDS8200 Series Quick Start User Manual Install Your Instrument 6 Click Add to add the input locale Regional Options EY English United States Remove SEL as METANI 7 Select the Input locale and Keyboard Add Input Locale layout IME English United States vi Indonezian 8 Select the Installed input locale and Regional Options click Set as Default 9 Click OK O EJ Engish United States r Japanese Japanese Input System MS5 ME 20004 Switch between input locales Lett Alt Shirt lt Switch to English United States US 10 Click Yes in each dialog box General O Change Regional Options 2 Change Regional Options CSA8200 amp TDS8200 Series Quick Start User Manual 11 Getting Acquainted with Your Instrument Getting Acquainted with Your Instrument Front Panel o Floppy disk drive 0060060000 S Oe Internal clock output Oe DC calibration output O O 0 ous External 10 MHz reference input L E Trigger probe power Trigger direct input Trigger prescale input On Off switch Ground terminal R
25. 0E08 TDR sampling modules are most appropriate due to their capability to independently control both delay for deskewing the acquisition of signals and TDR step deskew for deskewing the generated TDR steps for each channel The two major steps required to achieve a properly deskewed differential TDR system are Deskew the acquired signals Acquisition Deskew This time aligns the acquisition of the signals such that they are sampled at precisely the same time Deskew the TDR steps TDR Step Deskew This time aligns the TDR steps such that the stimulus steps arrive at the desired reference plane at precisely the same time Configuration Setup Considerations Before starting there are two setup choices to be made Reference Plane This is the location at which you ultimately want both the acquisition signals and TDR steps to be time aligned Common choices for the reference plane include The instrument front panel The inputs to a DUT Device Under Test attached to cables The inputs to a DUT within a fixture CSA8200 4 TDS8200 Series Quick Start User Manual 67 Skew and Deskewing 68 Instrument Reference plane at instrument inputs Instrument Reference plane at DUT DUT Instrument Reference plane at
26. 0SMA If the skew cannot be removed or is unknown proceed with measuring and or removing it Measuring Skew In most situations you can determine the skew by measuring the horizontal position of the signals under consideration the skew is the difference between threshold crossing times For single valued waveforms as opposed to eye diagrams you can use averaging and or filtering The filter is found in the math menu its time constant Filter Risetime should be set to a fraction of the measured signal s risetime Also keep in mind that the filter requires a pre charge so the signal trace is unreliable from the edge of the screen one time constant inward on both the left and on the right edge of the screen The position of the waveform can be read with either the cursors or the automatic measurement Saving the first signal as a reference is a convenient way to keep it available and visible For multi valued waveforms eye diagrams neither average nor filter is appropriate rely instead on the automatic measurement system to find the precise position of the crossing Methods to Deskew Your Acquired Signals For best measurement results when using multiple inputs it is necessary to remove the skew between the acquisition paths To remove skew between multiple acquisition paths acquisition deskewing do the following f you are using the 80A05 module to recover clock from a differential signal you need to deskew at
27. 20 GHz In particular the bandwidth of the P6150 is greatly improved by using a very short high speed cable When debugging or characterizing a functioning circuit a controlled impedance probe will drain current from the DUT When the in circuit source impedance is not small compared to the probe impedance typically 500 2 for 10X this current can be appreciable and impact important parameters such as bias point offset voltage noise margin signal amplitude switching point In this case the probe introduces errors in the measurements it is being used to take The probe can change the behavior or even cause the circuit to stop working When using differential probes you should use a matched set of coaxial cables Figure 5 P6150 Probe 60 CSA8200 amp TDS8200 Series Quick Start User Manual Using the 80A05 Electrical Clock Recovery Module Examples Probing with Differential to Single ended Probes The popular P7380 series TekConnect probes can be used with 80A03 TekConnect adaptor The P7380 offers two outputs one on the TekConnect connector and another on an SMA on the probe body If the signal captured by the probe is to be used for both clock recovery and acquisition we recommend using the signal from the SMA on the probe body for the clock recovery task Connect the probe body SMA to the 80A05 input The acquisition path uses the TekConnect signal 000000009 00 CS
28. 30 CSA8200 amp TDS8200 Series Quick Start User Manual Triggers An external signal coupled to one of the trigger input connectors on the front panel External Direct DC coupled and usable with signals up to at least 3 0 GHz External Prescale divided by 16 and usable with signals from 2 0 GHz up to at least 12 5 GHz An internal clock recovery trigger provided by an optical sampling module equipped with a clock recovery option or a dedicated electrical clock recovery module Clock recovery is user selectable for triggering rates that depend on the sampling module used for example either 622 Mbps OC 12 STM 4 standards or 2 488 Gbps OC 48 STM 16 standards for the 80C01 CR Optical Sampling Module A pattern frame trigger provided by a PatternSync trigger module such as the 80A06 PatternSync Trigger Module The output of the pattern sync trigger module must be connected to the EXTERNAL DIRECT TRIGGER INPUT connector on the front panel Use a trigger source that is synchronized with the signal you are sampling and displaying Selection of your trigger source depends on your application as shown in Table 1 Table 1 Application based triggering Application Communications optical serial NRZ data signals TDR measurement using an electrical sampling module equipped with TDR Measurements on systems with a synchro nized pretrigger signal Any application requiring that the input signal provide the trigger Any
29. A 12 To restart after a Stop After condition oc curs push the front panel CLEAR DATA front panel button Source Main El a Y Ena Comm Standard 003 Y Use Wim Database Clear Data hi N File Edit View Setup Utilities Applications Help 52 vaveforms HMskTotal 565772 of 750 Rent x 13 Read the mask hits count in the readout aie can ies T a ET Puce 7 fempirado 7 200000 tn 0 ue ane 500 nn E 096 99 824100 le Mask Counts parejo apra sira ka H Total 5160968 Py O p ER Wins 29621 Rae ius a lt W C s E gt PERA ANNA AA Pe A RA Fe Meee H arg 84 80 153 Opsvdi BO N G a o oo a fies 2uw ag man q a 153 Uredi BS 204608 12 42 PM 3 13 00 Quick Tips Selecting a source that is currently displayed as a waveform database automatically enables mask testing on the database To mask test the waveform instead of its database deselect the Use Wfm Database box You can choose to autoset the mask source waveform to the mask each time you select a new mask standard by checking Automatic under Autoset Pressing the RUN STOP button after acquisition has stopped due to a Stop After condition being met causes the instrument to acquire one and only one additional waveform The Clear Data button resets all mask counts In addition if the source for mask testing is a waveform database clicking this button clears the waveform database CSA8200
30. C packages and cables and high speed serial digital data communications High performance communications applications such as design evaluation and manufacturing test of datacom and telecom components transceiver subassemblies and transmission systems The instruments include a user interface that runs on the Microsoft Windows 2000 operating system as a windowed application You operate the instrument using front panel controls with the mouse and keyboard or with the touch screen Features Include Industry leading waveform acquisition and measurement rate with Sample Envelope and Average acquisition modes Support for up to six sampling modules two large and four small modules Up to eight inputs can be active at a time Supports integrated optical and or electrical signal pick off and clock recovery enabling accurate triggering on optical and or electrical communication signals Support for optical modules with several integrated selectable reference receivers which eliminates the need for a multitude of add on reference receivers Full programmability with an extensive GPIB command set and a message based interface True differential TDR with fast step 15 psec reflected risetime when used with a TDR capable 80E10 sampling module Industry leading trigger bandwidth 12 GHz when using the built in prescaler Support of both telecom SONET and SDH and datacom Fibre Channel Infiniband and Gigabit Ethernet optical comm
31. CSA8200 Communications Signal Analyzer TDS8200 Digital Sampling Oscilloscope Quick Start User Manual Tektronix Y lT n T Hn 071 1482 02 CSA8200 Communications Signal Analyzer TDS8200 Digital Sampling Oscilloscope Quick Start User Manual www tektronix com Tektronix Copyright Tektronix All rights reserved Licensed software products are owned by Tektronix or its subsidiaries or suppliers and are protected by national copyright laws and international treaty provisions Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX TEK TEKPROBE and FrameScan are registered trademarks of Tektronix Inc Contacting Tektronix Tektronix Inc 14200 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA For product information sales service and technical support In North America call 1 800 833 9200 R Worldwide visit www tektronix com to find contacts in your area Warranty 2 Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defectiv
32. DUT within fixture o o 0 Fixture Acquisition Deskew signal source There are three possible signals that may be used as a source to be connected to or injected into the reference plane A TDR step from an extra i e unused TDR capable module channel recommended source The Internal Clock Output from the instrument front panel A stable fast edge low repetition rate signal that is synchronous to an external trigger source Performing Acquisition Deskew Use these steps to set up the instrument and external environment for the selected deskew signal source 1 Perform a Default Setup from Utilities gt Default Setup or from front panel 2 Set the Autoset Mode to Edge from the menu Utilities gt Autoset Properties or TDR setup dialog TDR Autoset Properties button Ensure that all general autoset options Trigger Vertical Horizontal are enabled i e checked 3 Set the Acquisition Mode to Average from the tool bar Acq Mode control or from the Acquire Acquisition setup dialog 4 Set the Trigger Source as follows a Fora TDR step from extra channel set the oscilloscope trigger source to Internal Clock from the Trigger source selector in the toolbar or from the Trigger setup menu Turn on the TDR Step of the unused TDR channel and set its Polarity to positive rising edge from the TDR setup menu You do not need to turn the acqu
33. E a Veri Harz Acq Trig Trigger Source Y External Direct C Patten Sync Pattern Syne setup A er a Ea C External Prescaler El Internal Clock Z 200kHz J Clock Recovery Select this option to trigger on a recovered clock signal from an optical sampling module Select both the channel to trigger on if more than one sampling module contains clock recovery and the desired clock recovery rate at least for the selected channel When Clock Recovery is selected as the trigger Source the instrument automatically returns to the last a clock recowery channel selected from Default Setup this would E be the lowest clock recovery channel available E E a CSA8200 TDS8200 Series Quick Start User Manual Getting Acquainted with Your Instrument For in depth contextual overviews most dialog boxes have a Help button Click the button to open the help system with an overview of the dialog box that s currently displayed Position f22 2000ns aH Color Ej CSA8000 and TDS8000 Online Help Cursor Setup dialog box Use this dialog box to set up the cursor properties and display Backend Setups ma Setup Dialog box Overview Fhaze Fef Mask TDF Disp This dialog box gathers all controls tor cursor setup z such as cursor function and cursor 1 and cursor 2 Vert Horz Acq Trig settings Cursor Meas wim Datab Hist SESE S See Cursor Function Settings for information on t
34. Q A SCALE Y A Positioned vertically Scaled vertically HORIZONTAL POSITION gt RESOLUTION Me INCREASE DETAIL lt SCALE Scaled horizontally VIEW MAI S You can click a waveform trace or its reference indicator with the mouse pointer or touch screen to select it Push AUTOSET to quickly set up instrument parameters based on the input signal Press Set to 50 in the Trigger controls if required to stabilize the display when using the Trigger Direct Input connector CSA8200 TDS8200 Series Quick Start User Manual 25 Acquisition Using Autoset Use Autoset to quickly and automatically set up the instrument vertical horizontal and trigger parameters based on the characteristics of the input signal 1 Push the AUTOSET button to execute an Auto set If you use Autoset when one or more channels are displayed the instrument uses the selected 4 channel for horizontal scaling Vertically all ne channels in use are individually scaled Quick Tip m Use the Define Autoset in the Utilities menu to display and change the Autoset properties Using Default Setup 1
35. Trigger RAN 0 3 Select the channel that you want to dis E 2 play in the Mask setup dialog box Wim Database Hist Cursor Meas Vert Har l den Trig Phase Ref Mask TOR D 4 Select the communication standard DC 1 5 TM 0 UL 7 v 5 Click Autoset in the Mask setup dialog Sowce box or on the front panel Main C1 A Enable Mask Counts O0 12 5TM 4 presets 0C 18 Comm Standard OC A2 STH amp Yi None 00 24 Ethernet b OC 36 Iv Use uwin Database Clear Data Fibre Channel Optical OL 45 5 TH 16 Fibre Channel Electrical k FEC 666 Obs Display IriniB and 2 00 192 57M 64 a Color Loa lt PCI Express 2 FEC10 66 Gb s gt Rapid 10 I FECIO 71 Gbr Mask Margins SAS K DC 768 57 M256 SATA k FECA2 66 Gb s I On T 5 0 BH S SONET ISDH N FECS3 02 Gb s to at e El HiLow Method Mean C Mode C Automatic Manual CSA8200 amp TDS8200 Series Quick Start User Manual 47 Analyzing Waveforms Display and Analyze Communication Signals Using Mask Testing 48 Use mask testing to test your waveforms for time or amplitude violations against a predefined industry standard or a user defined mask Mask testing counts waveform samples called hits or violations that occur within a specific area the mask Use the communications standard masks that this instrument provides SONET SDH Fiber Channel Optical and Electrical
36. Wave form in the File menu 3 To print a hard copy to an attached print er or a network printer click the print icon in the toolbar To copy a screen image into another ap plication choose the Print to file option in the print dialog Save the screen image in a format that is compatible with your application and then insert the screen image into your document CSA8200 amp TDS8200 Series Quick Start User Manual Save Setup As Ma Save w aveto 2 File Edit View Setup Utilities Hel Save Setup Recall Setup Recall Waveform Export we avefornn Print Ctrl P Fage Setup Recenthle ef 006566 0 131347 0 160097 0194666 0 198260 0 199146 0 199192 0 199377 0 199580 0 129479 0 199614 0 199705 0 1996 51 0 199792 0 199782 0 200030 0 1996 10 0 199599 0 200005 0 199860 0 198231 0 200004 0 12006 0 1392912 U 00005 0 0017 0 19990 0200049 File Edit Wiew Setup Utilities Appl 6 EPC M Pulse Amplitude r nn nna tl ELX 3564 T Element Test Report djdmd Gfm fkfo Idm dd gpmnrbw dkjd djs sbs dkd iff fkjdsn a dikd dd O jd ddjdm djdkddf pdhas fjskdmd Haa djdmd Gfm fkfo Idm dd gpmnrbw dkjd djs sbs dkd If f fkidsn rd refe donnf Iflfm fkfo Idm dd gpmnrbw dkjd djs sbs dkd If f fkidsmshd djkd dd Gfm fkfo Idm dd gpmnrbw dkjd djs sbs dkd If f fkjdsmshd djkd dd me a Ujdk donnf Iflfm fkfo Idm dd gpmnrbw v vpo H p eo dekjg bn m ddjdmdjdkddf
37. access the setup dialog for its control group for more detailed setup Display measurement cursors and assign the knob and Select buttons to control them Quickly return to instrument default control settings Optimize instrument settings for selected channels Access print dialog for printing the display _ 9 el D ALOGS ca N TOUCH m VERTICAL ACQUIS ITION ms gt aa G CoH MATH REF ua Ea ED Display the cluster of Setup Dialogs for comprehensive setup of the instrument Toggle the touch screen on and off Use the touch screen to control UI when you haven t installed a mouse Select a waveform type Channel Reference or Math to display or adjust on screen selected button lights ara HORIZONTAL TRIGGER gt B Select among displayed waveforms or display and select a el 2 POSITION A POSITION waveform Press selected waveform to tun it off Button ull Ie oe men A lights indicate displayed and selected waveforms 3 WAIN ES Es ZA OFFSET EN RESOLUTION READY Select among displayed timebase views or display and 5 gt S 1 A Wan select a timebase view Press selected view to turn it off S ATA INCREASE except main which is always on 6 DETAL A SCALE lt SCALE TRAS Se 7 O Vertically scale position and offset selected waveform ATA 9 Horizontally scale position and set record length of selected wavefo
38. anr 500 nal 1 ap 101 500 0m Y lo a 100 0rnw mE Cursors require that at least one waveform is selected on screen S Waveform cursors are not available if a waveform database is selected You can drag a cursor to place it relative to the waveform tt tt tt ttt 500 Opsiciv AE Off r C3 100 0rn Woi 176 224rn L 101 517 74 707 Dr 20 6500ns 22 3000ns 1 65000ns 606 06 1MHz ron AJA Bec 559 Pm 47472004 S You can assign each cursor to a different waveform to measure differences between waveforms Make these selections in the Cursor setup dialog box f you use two magnified time base views you can take precision timing measurements between two distant points on a waveform Magnify each point of interest in a separate time base and then place one cursor on each point The A time cursor readout will then reflect the position and resolution of the magnified time bases CSA8200 amp TDS8200 Series Quick Start User Manual 43 Analyzing Waveforms Math Waveforms You create math waveforms by creating a math expression using the Define Math dialog box In that dialog box you apply numerical constants math operators and functions to operands which can be channels waveforms reference waveforms measurements scalars or fixed scalars You can display and manipulate these derived math waveforms much like you can the channel and reference waveforms 1 Press the Vert
39. application requiring that you probe the trigger source Any application requiring that you perform special measurements using gated trigger Trigger Source Connectors Source to use Set source to Clock Recovery set the clock recovery type and use an optical sampling module equipped with a clock recovery option supporting the specific data rate of the serial optical signal The available clock recovery rates depend on the sampling module installed Set source to Internal Clock to use the internal clock of the instrument TDR clock and select the appropriate clock frequency Disconnect any signal connected to the External 10 MHz Reference Input when using the Internal clock Set source to External Direct or External Prescaler as appropriate and connect the pretrigger signal Set source to External Direct or External Prescaler as appropriate Use a signal splitter or power divider to couple to both the Ext Direct or Prescaler input and the input channel so that the sampled signal is also the trigger signal Set source to External Direct and use a Tektronix probe Set source to External Direct select Gated Trigger and use a TTL connection to trigger gate External triggers can be connected to either the TRIGGER DIRECT INPUT or TRIGGER PRESCALE INPUT connectors on the front panel S Signals connected to the PRESCALE connector are divided by eight and then fed to the trigger circuits S Signals connected to the DIRECT connect
40. cts when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Table of Contents Table of Contents General Safety SUMMA ii nn elias tn Ee see Pet A II V Blci V Conventions Used in this Manual nananana anaana vi A A e e 1 Gac nn a e eee es wee E a E ent E a 3 JE A teen aero SS 3 Operating CoOnsideraliOnS escorts dedos bad ad a 4 Mechanical sario soria da ia raid diana ae greene pa he ee 4 Sleet nao passion ho bara ee ot ake en 4 o e gags auecsu geet 4 PUL GOMNCCIONS AAPP o suas caus swreseees aueere eau T 4 CONCAS AAA E on O EA 4 INSTA MOQUIeS ceuta e iris bardear bdo yo eer ad wees 5 Powering the Instrument On and Off teen enee eee nee e nee enna 6 Creating an Emergency Startup Disk anann anaana 7 Adding a Second MORO esmero emi tee eee hehe eede test beh ai 8 Changing t
41. d measurements Cur rently measurement slots 1 and 3 have measurements assigned 2 Select Meas measurement from the Setup dialog box 3 Use the pulldown list to select Meas 3 measurement slot 3 4 As indicated measurement slot 3 has a measurement assigned and is dis played On 5 Press the Select Meas button to set the measurement slot 3 to None 6 As indicated measurement slot 3 is Not Defined and no measurement icon is displayed 7 Here measurement slot 1 has a mea surement assigned It is set to not dis play but the measurement slot is still used Quick Tip lA dls Measurement Phase Ref Mask TDA Disp Rise cs M Vert Horz Acq Trig 216 3180p Wim Database Hist Cursor Meas o C3 JL 1 650 4368ns Prd v On it Meas 3 su Pulse Measurements DI Pulte Amplitude b Pulse Timing 2 Pulse rea he a Select Meas Not Defined Value Show skats Par Stats Mess 1 y 1 On ral Select Meas C1 Frequency Value A Shan skats Clear Stats To easily redefine a measurement slot select Select Meas and choose a new measurement CSA8200 amp TDS8200 Series Quick Start User Manual 41 Analyzing Waveforms Cursor Measurements Use cursors to measure amplitude and time quickly and with more accuracy than when using the graticule to take measurements Because you position cursors wherever you want on the
42. d the phase correction timebase that it supports when you need to acquire with ultra low jitter When you use this mode you reduce trigger jitter in the instrument which lets you measure clock and other phase jitter vulnerable signals with more fidelity To use phase reference you must have a Phase Reference module such as the 82A04 installed in one of the compart ments and a phase reference clock signal synchronous to the data to be acquired connected to the Phase Reference module Refer to the On line Help for more information on using the Phase Reference timebase 1 Click Phase Reference in the Setup Setups x menu to display the Phase Reference Wim Database Hist Cursor Meas Wert Horz Acq Trig dialog box Phase Rel Mask TOR Disp 2 Turn Phase Correction on by checking Phase Correction either Free Run or Triggered an a te Free Aun S Free Run A trigger is automatically E Triggered generated Multi clock cycle period displayed signals are synchronous with the phase reference but overlaid Phase Reference a Source C5 CE Input Freg 2 430000005 a 210 Standard Freg Table l Triggered Samples are corrected for horizontal position per the phase LAA reference supplied but otherwise have all the attributes of a triggered Fassed 10 waveform Timebaze 3 Click the Source control to select the Mode Short TermJitter m module to which you connected the Help
43. dule without channel delay capability e g 80E04 then perform the following Compute Time2 Timel If the result is positive then set the channel Deskew Vertical setup menu for the 2nd channel to the resulting difference Otherwise set the channel deskew for the 1st channel to the absolute value of the difference If deskewing a module with channel delay capability e g 80E10 or 80E08 then perform the following a Turn on a Delay measurement from the Measurement setup menu or the measurement toolbar Pulse gt Timing gt Delay with the 2nd channel as Source1 and the 1st channel as Source2 measuring between the rising edges b Adjust one or both of the 1st and 2nd channel s Delay Vertical setup menu until the delay measurement is minimized near zero If the measurement can not be minimized sufficiently then reset the Delay controls to zero and use the Deskew control as described in step 10 Performing TDR Step Deskew Use these steps to set up the instrument and external environment for TDR Step Deskew 1 Disconnect the deskew signal source and turn off both the Reference waveform and Delay measurement if either is on Provide an open or short termination at the reference plane for both channels Turn both channels on if not already Set the Autoset Mode to TDR from Utilities gt Autoset Properties or TDR setup menu TDR Autoset Properties button Press AUTOSET from toolbar above the graticule or from
44. e communication standard is changed to User Using the PatternSync Trigger module in conjunction with FrameScan can improve both acquisition throughput and timing accuracy 35 36 Triggers Checking Trigger Status You can check the status of the trigger from the front panel and in the status bar The status bar also displays the waveform count If using a phase reference module such as the 82A04 for triggering refer to page 53 for information about phase reference triggering 1 Check the READY and TRIG D front panel controls to determine the trigger File Edt View Setup Utilities Applications Help Triggered Tektronix EE IE fe Ani e 4cg Mode Sample Trig Clock Recovery 175 0rn Y s Aon M net nn c na w 559 ne cx uo aa 73 101 wW 12 ula E a Praserertes_C6 status Pulse Amplitude METE TRIGGER gt MENU LEVEL Q READY TRIGD SET TO 50 CSA8200 amp TDS8200 Series Quick Start User Manual Analyzing Waveforms Analyzing Waveforms Your instrument features cursors automatic measurements statistics histograms and math to assist you in analyzing waveforms This section contains concepts and procedures for analyzing waveforms Detailed information is available in the online help Taking Automatic Measurements Automated measurements are divided into signal types Pulse NRZ Non Return to Zero and RZ Return to Zero These a
45. e product Parts modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance All replaced parts modules and products become the property of Tektronix In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other produ
46. ear Panel CD ROM drive Removable hard drive Audio line out Audio line in microphone USB keyboard PS2 keyboard PS2 mouse LAN COM 1 e J y Parallel port O L L Ae P aJ ef 6 _ p ol S FONO CTO el O TG o e SVGA out for dual monitor display O O J ON 0 I Scope VGA output for instrument display GPIB Gated trigger Option GT lower right corner 12 CSA8200 amp TDS8200 Series Quick Start User Manual Getting Acquainted with Your Instrument Interface The menu bar provides access to commands that control all of the instrument features and functions The toolbar provides access to the most common features Hovering the cursor over button or setting displays a brief description of its function called a tooltip Tool Bar Access to key features printing setup dialogs math setup waveform database autoset clear data acquisition mode triggering and applications Menu Bar Access to data I O printing online help system and set up functions Status Bar Trigger status and waveform count F A Measurements Bar File Edit View Setup Utilities Applications Help Triggered S mae 2IX1 Readout Bar To ggle Access to automated E 2 Fe baji 7 a Acq Mode Sample Trig Extemal Direct lt LS 300 Ele App A individual readouts on and measurements by signal type and category click IP Z Amplitude nem nnn cat an mac an 300
47. ee ene e nee nena 67 Performing Acquisition DeskeW 0 0 0 ccc eee eee e eee e eee eeenanee 68 Performing TDR Step Deskew 0 0 ccc eee eee teen eee e eet eeeennee 69 leaning AMG I SUPUICI TTT 71 yde 101810 7141110 go a dates ahead ET A 0 a T Ut apo a aes 71 Flal Panel Display Clean siii as interes a Maree re Maree pa americans 71 Optical Connector eT sisi tad Scena ete e Maree aabt tobe 71 A ars a Geta etic eesti told area RE Seen a a aA 73 CSA8200 amp TDS8200 Series Quick Start User Manual General Safety Summary General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures While using this product you may need to access other parts of the system Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system To Avoid Fire or Personal Injury Use Proper Power Cord Use only the power cord specified for this product and certified for the country of use Connect and Disconnect Properly Do not connect or disconnect probes or test leads while they are connected to a voltage source Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth
48. eform 7 Select the HiLow Method used to deter mine the High and Low values when aligning the input signal to the masks Mean sets the Mask Autoset to use the mean value of the High level topline and Low level baseline taken within the fixed eye aperture center 20 of the eye to align the input signal to the NRZ mask Mode sets the Mask Autoset to use the High level topline and Low level baseline taken across one unit interval of the eye diagram to align the input signal to the NRZ mask To set a Stop Action 8 Click Acq in the Setup menu 9 Inthe Acq Setup dialog box check the Condition option under Stop After 10 In the Condition pulldown list select a mask related criteria such as Mask To tal Hits and set a count such as 1 in the count box These settings stop acquisition when mask violations satisfy the criteria you set 11 Push the RUN STOP button to restart acquisition if stopped CSA8200 amp TDS8200 Series Quick Start User Manual Mean o O Manual T Node Autozel Tee Lor Metho T Automatic O Autozet Phase Ref Mask TOR Disp Cursor Meas Acq Trig wim Dectace Hist Wert Horz Shop A fhe l C Aun Stop Button Oru 9 Condition Mask Total Hits 1 Stop D chon None 9 Filename Y Ping bal n Analyzing Waveforms 49 Analyzing Waveforms 50 To restart testing ACQUISITION CLEAR DAT
49. es simple triggering on electrical signals through its clock recovery on either single ended or differential signals The differential functionality in particular simplifies acquisitions that were previously difficult to accomplish The 80A05 is able to recover clock signals at most standard rates between 50 Mb s and 12 6 Gb s The skew between signals presents a challenge to many measurements Verifying the amount of skew and deskewing when necessary keeps your skew errors in check and limits the undesirable influence of common mode signal on your measurements This section presents simple example setups and information about vertical calibration horizontal deskew and minimizing the effect of skew on your measurements 80A05 CLOCK RECOVERY MODULE M 50 QTERMINATION REQUIRED ia N N 1 O O O as A A A A A a TRIGGER CLOCK IN B0 L2 IN OUT 50 2 OUT 1 16 FOR gt 2 7 Gb s Nice DE Jo l tt ELECTRICAL INPUT ELECTRICAL OUTPUT CLOCK OUTPUT Figure 1 80A05 module 56 CSA8200 amp TDS8200 Series Quick Start User Manual Using the 80A05 Electrical Clock Recovery Module Examples Clock Recovery Trigger on Recovered Clock In this example the signal is simply connected to the 80A05 module The 80A05 delivers a recovered clock signal to the mainframe to be used for triggering by setting the trigger source to Clock Recovery for the channel the 80A05 occupies Differen
50. evel from the front panel with the Trigger LEVEL knob The slope and level controls apply only when the trigger source is set to External Direct using the TRIGGER DIRECT INPUT connector Trigger Modes The trigger modes control the behavior of the instrument when not triggered Normal mode sets the instrument to acquire a waveform only when triggered Normal mode does not acquire data if triggering stops the last waveform records acquired remains frozen on the display if the channels containing them are displayed If no last waveform exists none is displayed Auto mode sets the instrument to acquire a waveform even if a trigger event does not occur Auto mode uses a timer that starts after trigger rearm If the trigger circuit does not detect a trigger before this timeout about 100 ms it auto triggers forcing enough trigger events to acquire all active channels In the case of repetitive acquisitions in automatic trigger mode waveform samples are acquired but at different places in the data stream synchronization is lost If you do not apply a signal to any displayed channel a baseline is displayed for that channel Trigger Sources The trigger source provides the signal that the trigger system monitors The source can be The internal clock of the instrument TDR clock rate with user selectable clock frequencies The INTERNAL CLOCK OUTPUT connector supplies a replica of the internal clock at the instrument front panel
51. fferential acquisitions measured in the presence of significant common mode signal need to have the common mode signal suppressed as much as possible this can be done only if the differential acquisition is well deskewed Sources of Skew In non TDR applications there is only one source of skew that needs to be adjusted the skew of the acquired signals as previously described as they propagate from their source to the instrument However in TDR applications there is an additional source of skew that needs to be adjusted the skew of the TDR step pulses when using multiple TDR channels In this case the TDR step s produce signals that propagate from the instrument to the device or system under test It is important that these stimulus step pulses arrive at the desired location reference plane at the exact same time CSA8200 amp TDS8200 Series Quick Start User Manual 63 Skew and Deskewing One method for correcting deskewing for these skew sources in a differential TDR system is described in Minimizing Skew Minimizing Skew You can minimize skew between differential branches or multiple inputs by following these simple rules m Use balanced cable pairs Measure and match your cables TDR modules such as 80E10 80E08 and 80E04 allow you to measure cable delays with very high precision In differential systems use Differential probes or Differential SMA to Single ended active convertors such as the Tektronix P738
52. ge 30 36 gated 32 high frequency 32 holdoff 32 metastability reject 32 U User interface compensation indicator 13 controls bar 13 measurements bar 13 menu bar 13 phase reference status 13 readouts bar 13 readouts display 13 status bar 13 tool bar 13 waveform bar 13 User wavelength compensation how to perform 22 V V Bars cursor 42 Variable persistence 29 Vectors displaying waveforms as 29 Vertical set up procedure 24 View main amp mag 15 W Waveform display 13 export 55 save 55 Waveform display style 29 Waveform bar 13 Waveform cursors 42 43 CSA8200 amp TDS8200 Series Quick Start User Manual
53. ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Power Disconnect The power switch disconnects the product from the power source See instructions for the location Do not block the power switch it must remain accessible to the user at all times Do Not Operate Without Covers Do not operate this product with covers or panels removed Use Proper Fuse Use only the fuse type and rating specified for this product Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Wear Eye Protection Wear eye protection if exposure to high intensity rays or laser radiation exists Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Provide Proper Ventilation Refer to the manual s installation instructions for details on installing the product so it has proper ventilation Symbols and Terms Terms
54. he Function different cursor types Off Y You can click the tabs or click in the dialog box Vertical H ars displayed at left to read more about the controls What do you want to do next C Horizontal Bars Me al Learn more about cursor controls esta step by step procedure for setting up cursor controls Cursor 1 Source _ Main C2 a Position 40 20n2 S Color rP l You can search for in depth help from the Help Contente and Index application menu bar select Help and Getting Started Guide then select Contents amp Index Measurements Center Measurements Reference Programmer Guide bout TOS 545000 CSA8200 amp TDS8200 Series Quick Start User Manual 17 Inspect Your Instrument Inspect Your Instrument Use the following procedure to verify the functionality of your instrument For a complete performance verification see the Performance Verification section in the optional service manual Verify Internal Diagnostics Pass 1 Install all modules to be diagnosed 2 Power on the instrument and wait 20 depa minutes for the warm up period a NS a ey cs SS O S O G U O SS e 20 O EC 2 G Q CJ 3 Select Diagnostics File Edit view Setup Utilities Applications Help HF 25 fe fy TC A Define Autoget AAA AA Autos Pulse Amplitude Undo Autoset
55. he Windows Language 0c ccc cece eee e teen teen eenees 10 Getting Acquainted with Your Instrument 0 ccc eee tenet tenet eee ene nneeas 12 o o aeieea ue abn aa oe E erg bode eet wee Ee o ew ee dee ec ek 12 CARE ANC sono daa de dotes d hb iaa quod a oO eee dean a eee la ere eo awh 12 Teir perire rere Ss aedanded sa disou rE oek enone eee ewes ed behead eet 13 o UU AI 14 Display Single Graticule View o o ooooooocoooco ene ete e eee e eee e tenet e nena 15 Display Multiple Views 0 0 ccc eee eee nett eee n eee e nee eees 15 Accessing Online Help 0 ccc eee eee nee teen eee n teen eee eenennes 16 leel cE VOURINSIUMENL se gt copas Senne ea ad ted td ii e seen Sane 18 Verify Internal Diagnostics PaSS oooooooooonocnr eee teen eee e eee AE E i 18 Optimizing Measurement Accuracy 0 ccc eee eee tenet nee e eee n een nenaee 20 Signal Path Compensation 0 0 ccc eee nett e nent eee e teenies 20 Perform Dark Level and User Wavelength Gain Compensations 0 0 c eee eee ene eee 22 ACQUISIION geacgosean setae oouechoweereouee ee seen ese eeseedsyeeeew ce ease eeeeerareoneawee eset 24 Selling Up Signal Te sinned rs rad a deka tae edd ed a as 24 WSING AOSE cosas sidad debe tee de beds di ena 26 Using GTS SUD somera bas pios pais a kes e heed eke era 26 Accessing the Setup Dialog BOXES 0 0 ccc tenet nent ent e nee n eens 27 Changing the Acquisition Mode
56. ical MATH button once oe VERTICAL or twice if needed to display the De CH vara fine Math dialog box 2 Click the Math Waveform drop down list in the dialog box and select one of MathWavefom Hal ta the eight available math waveforms a Functions 3 Use the dialog box to define a math ce pitt vad expression Some guidelines for creat 0 al rea ing your expression follow Verla Ming Sources C1 C8 R1 R8 and Meas1 Meas8 should be set up before you use them references and automated measurement scalars should be defined Math Waveform Math Expr ssion l m lt Gr Elements that appear grayed out cannot be selected because they would result in an illegal entry Diff maal Eiler Lat sar int Versus Aval Mini Maxi Al 4 Use the filter controls in the dialog box Define Math ER to apply a filter to the math waveform Math Waveform Math Expression defined by the expression Functions DI Ymagl Filter Logi Sart Lr Aval Mini Mav Z o LE i E 12 te Alum Ayvgs 2 Bl S NU Filter Risetine fi O00ns El al Filter Mode Centered Intal 44 CSA8200 TDS8200 Series Quick Start User Manual 5 When you have defined the expres sion click Apply 6 Select the Math Waveform On box so that the waveform displays Quick Tip Analyzing Waveforms Math Waveform Math Expression M1 Mon vacca
57. ignals Gated Triggering Gated triggering takes the trigger and the External Gate input and applies them to the instrument through what is in effect an AND function Gated triggering can be used for applications such as simulations of undersea communication fibers where test fixtures are used to repeat the test signal through a short loop of cable to simulate traveling longer distances The trigger gate can be used to ignore triggers until the signal has traversed the loop many times Trigger Holdoff Trigger holdoff can help stabilize triggering When you adjust holdoff the instrument changes the time it waits before rearming its trigger circuit after acquiring a sample Before rearming trigger circuitry cannot recognize when the next trigger conditions are satisfied and cannot generate the next trigger event When the instrument is triggering on undesired events you can adjust holdoff to obtain stable triggering CSA8200 amp TDS8200 Series Quick Start User Manual Triggers Holdoff Holdoff Holdoff TUES O Indicates trigger points Holdoff Holdoff Holdoff Holdoff UL UL At the longer holdoff time for the top waveform triggering occurs at valid but undesired trigger events With a shorter holdoff set for the bottom waveform triggers all occur on the first pulse in the burst resulting in a stable display CSA8200 8 TDS8200 Series Quick Start User Manual 33 Triggers Setting Trigger Controls Nearly all trigger
58. in this Manual These terms may appear in this manual CSA8200 amp TDS8200 Series Quick Start User Manual lil General Safety Summary T WARNING Warning statements identify conditions or practices that could result in injury or loss of life T CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product A A CAUTION WARNING Protective Ground Refer to Manual High Voltage Earth Terminal O Mains Disconnected Mains Connected OFF Power ON Power standby IV CSA8200 amp TDS8200 Series Quick Start User Manual Preface Preface Documentation This manual describes the installation and operation of CSA8200 amp TDS8200 Series Instruments along with basic operations and concept For more detailed information see the online help on your instrument NOTE The screen images in this manual are based on product software version 2 5 and may differ slightly from other versions of product software Additional information is available through a variety of sources The following information map points to
59. ing the trigger system Detailed information is available in the online help Triggering Concepts Trigger Event When a trigger event occurs the instrument acquires a sample in the process of building a waveform record The trigger event establishes the time zero point in the waveform record and all samples are measured with respect to that event The trigger event starts waveform acquisition A trigger event occurs when the trigger source the signal that the trigger circuit monitors passes through a specified voltage level in a specified direction the trigger slope When a trigger event occurs the instrument acquires one sample of the input signal When the next trigger event occurs the instrument acquires the next sample This process continues until the entire record is filled with acquired samples Without a trigger the instrument does not acquire any samples This behavior differs from that of real time acquisition systems which can acquire a complete waveform record from a single trigger event Trigger Type This instrument supports edge triggering only in which edge triggers gate a series of acquisitions The slope control determines whether the instrument recognizes the trigger point on the rising or the falling edge of a signal You can set the trigger slope from the toolbar at the top of the display or in the Trigger Setup dialog box The level control determines where on that edge the trigger point occurs You can set the trigger l
60. isition of the channel on b For an Internal Clock Output set the oscilloscope trigger source to Internal Clock You may need to use a 50 Q terminated SMA T a 50 Q terminated power divider or a 2 6 dB attenuator in order to reduce the Internal Clock Output amplitude to an acceptable amplitude for the module CSA8200 TDS8200 Series Quick Start User Manual 10 11 Skew and Deskewing c For a fast edge low repetition rate signal with synchronous trigger connect the trigger signal to either the TRIGGER PRESCALE or the TRIGGER DIRECT input Connect the deskew signal source to the reference plane of the ist channel to be deskewed and turn that channel on Press Autoset from toolbar above the graticule or from the front panel A signal edge should be displayed near the center of the graticule Record the Horizontal Position value lower right numeric control as Time1 If deskewing a module without channel delay capability e g 80E04 save the waveform as a Reference waveform from File gt Save Waveform The saved Reference waveform is automatically turned on and displayed Connect the deskew signal source to the reference plane of the 2nd channel to be deskewed and turn that channel on Turn the 1st deskew channel off Press Autoset from toolbar A signal edge should be displayed near the center of the graticule Record the Horizontal Position value lower right numeric control as Timez If deskewing a mo
61. itor Make sure that both monitors are set to True Color 10 Click Apply and then click OK CSA8200 amp TDS8200 Series Quick Start User Manual Install Your Instrument J Control Panel Network and Dial up Connections Printers K Taskbar amp Start Menu ff Start he TekScope 5 Automatic Updates HS Date Time Li Folder Options Display Properties aa Background Screen Saver Appearance Web Effects Settings e Drag the monitor icons to match the physical arrangement of your monitors Display 2 Default Monitor on Chips and Technologies Asiliant 69000 z Colors Screen area True Color 24 bit Less l as More Em t E 640 by 480 pixels Use this device as he primary monitor IZ Extend my windows desktop onto this monitor Identity Troubleshoot Advanced Background Screen Saver Appearance Web Effects Settings Display Properties Drag the monitor icons to match the physical arrangement of your monitors El Display 1 Default Monitor on IntelA 82810 Graphics Controller hd gt Screen area CAPA Less Y a More 1 DN Y 800 by BOD piel C Use this device as the primary monitor ON Extend my Windows desktop onto this monitor Identify Troubleshoot Advanced OK e Cancel I Apply E Install Your Instrument Changing the Windows Language Use the following procedure to change the Windows language f
62. l eee n tenet e nee nena 47 Display and Analyze Communication Signals Using Mask Testing 0 00 c eee eee eee eens 48 Ela meocall arista aia tare beds dad Sara atte abe weet a 51 TOUS TDR dar A da isis 52 Phase Sene 53 ISO a HA oh ges eet ae a Steen H T LR oe Sane othe die ne ee ok EREE toe 54 Document Your ROSS eet teint boa a gh aad ath y each boda nee oh wear othe aie Diane bnew dak ee oar de Sait bates 55 Using the 80A05 Electrical Clock Recovery Module Examples 0 0 00 ccc cece eee eee eee eens 56 Clock Recovery Trigger on Recovered Clock 0 1 cette eee tenn eens 57 Clock Recovery Trigger for Optical Signal with the 80C12 Optical Module lt 58 Differential Clock Recovery and Acquisition 0 0 ccc ccc een e nee enna 59 Probing with Low impedance Probes 0 ccc cece teen eee eee nets 60 Probing with Differential to Single ended Probes 0 ccc cece een eee tent e nena 61 Verica Gal AQUSIMON esha a hor e did dar aa Mace da rs 62 SKEW and DESKEWINO 63 SOUICES Ol SKOW aso ai a eee wade ees 63 MIMMIN OKW oc ri ad alate ei hal ee a be eae 64 MGGSUMMO SKEW meso o ed ote Sn Gelade Scart che a io reas 64 Methods to Deskew Your Signals e n eee e ene eeneaes 64 Methods to Adjust OUU SKOW 234 ic ida it ds 66 Differential TDR Deskew Method 0 ccc ccc ene eee n eee e tenn nneaes 67 Configuration Setup Considerations 0 cent e
63. l vertical bandwidth and filter selections Use the following procedure to perform either compensation this procedure applies only to optical modules 1 Install at least one optical sampling module in the instrument to be dark level calibrated Set the acquisition system to run continuously 2 Use the Vertical buttons to select the channel to be compensated 3 From the application menu bar click Setup and then click Vertical 22 E 21 9 00 rere OOo O 0 0 o O O O O Ll U J VERTICAL Fie Edt Wiem Setup Utilitie Applica lt in aC Horizontal Pulse amp Acquire Trigger Measurement Mask Display Histogram Cursors wfm Database TOR Phase Reference CSA8200 amp TDS8200 Series Quick Start User Manual Optimizing Measurement Accuracy To run the Dark Level compensation 4 In Vert Setup dialog box click the Dark Compensate Level button under Compensation A Dark Level Follow the instructions on screen User Wavelength Gain Repeat steps 2 and 4 for any addition al optical channels you want to compensate To run the User Wavelength Gain compensa tion for custom input signals 5 Attach an optical signal with a precise ly known amount of optical power to SN A the optical module input Sooner a a
64. librated using this DC CAL voltage CSA8200 amp TDS8200 Series Quick Start User Manual Skew and Deskewing Skew and Deskewing Skew is the time mismatch between two or more signals acquired by the oscilloscope Removing skew or deskewing is necessary in many applications in order to obtain the best measurement and analysis results Deskewing applies to both single ended multi channel applications and especially with differential systems The amplitude and shape of a differential signal is highly dependent on the skew between the two signals For example a skew of 180 half a period would change the displayed amplitude of a difference math signal for two ideal sinusoids to Zero At high speeds this situation is a realistic problem for example a 10 GHz signal has a half period of 50 ps resulting in an unacceptable amplitude error from skew of 25 ps on one cable and 25 ps on the other In the time domain differential skew of a step signal will become clearly visible as a step in the mid rise when the skew between the differential branches is on the order of the risetime of the signal observed See Figure 8 for an example of how skew between branches of the differential signal impact the signal and its risetime Corresponding measured risetime 94 ps 106 ps 203 DS Figure 8 90 ps differential step captured with different skews Another reason to deskew differential systems is to fully suppress common mode signals Di
65. measurement h 7 E 100 0rn W diw 4J Rise C3 A 218 17 18ps PhaseRef C5_C6 Off r C3 100 0rn vd Measurement pise c3 A 221 4202ps CSA8200 amp TDS8200 Series Quick Start User Manual To measure a waveform database 11 From the application menu bar select Setup and then select Meas In the Meas Setup dialog box make sure the measurement one of Meas1 through Meas8 is selected 12 In the Source tab check the Use Wfm Database option CSA8200 amp TDS8200 Series Quick Start User Manual Use Wim Database Clear Analyzing Waveforms Phase Ref Mask TOR Disp Vert Horz ca Trig wim Database Hist Curo Mess 0 Meas 1 9 On mu Select Meas C5 Frequency Value 103 648772405510 MHz Show Stats Clear Stak Source Source Set to Defaut FOIE Fiecion HiLow RetLevel mancs a Signal Type Pulse NP Z HZ Iy Ex La i Statistics weighting 2 as M Annotations Help 39 Analyzing Waveforms 40 To localize a measurement 13 Select Meas Setups AE Phase Ref Mask TDR Disp Vert Horz Acq Trig tm Database Hist Cursor Mease 14 Select the Region tab to expose the gate controls 15 Click the On box to turn gating on and Meas1 ZIM Dp to display the gates on screen ST C3 Pk Pk 16 Use the G1 Gate1 and G2 spin con Valve 260 000000 mY trols or type in value
66. n strument Refer to Triggers beginning on page 30 for information about trigger settings controls and inputs Push the CH button turns amber to assign the waveform buttons 1 8 to operate on channel waveforms then select the proper waveform but ton A waveform button lights when its channel is on when on but not selected its button is lighted green when on and selected its button is lighted amber Pushing the MATH button assigns the waveform buttons to math waveforms If no math waveforms are defined the Define Math dialog box appears Push the REF button to assign the waveform buttons to reference waveforms If no reference waveforms are defined the Recall Waveform dialog box appears ee a Ss 5 aA QO 200 4 B sO Q o Ep p O O L o a m VE RTICAL CSA8200 amp TDS8200 Series Quick Start User Manual 4 Use the Vertical Offset knob to adjust the se lected waveform on screen Use the Vertical Scale and Position knobs to adjust the display 5 Push the View Main button to make sure that the main time base view is selected Use hori zontal knobs to scale and position the waveform on screen and to set sample resolution Quick Tips Acquisition Offset vertically A POSITION Vv ZN OFFSET
67. n from the Utilities menu to ensure that the instrument meets it specifications when reaching a stable equilibrium after power up normally 20 minutes is recommended You must save the compensation results or they will be lost when the instrument is powered down Signal Path Compensation This procedure compensates the signal path of each installed module for the current temperature to enhance measure ment results Use this procedure for any of the following conditions A module has been added to the instrument or a module has been moved to another compartment The temperature has changed more than 5 C since the last signal path compensation When making measurements at vertical scale settings less than or equal to 5 mV div perform the signal path compensa tion once a week Failure to do so may result in the instrument not meeting warranted performance levels at those volts div settings 1 Install all modules to be compensated 2 Install all terminations and dustcovers pd b b Failure to install the 50 2 terminations O on electrical inputs can yield erroneous 30000 0 compensation failures or results O a O 3 Power on the instrument and wait 20 gt J minutes for the warm up period o EC O L 20 CSA8200 amp TDS8200 Series Quick Start User Manual Optimizing Measurement Accuracy 4 Select
68. new data from ongoing acquisitions replacing data acquired from previous acquisitions Show Vectors turns on display lines between waveform dots deselect to display only dots Select an Interpolation mode from the pulldown list S Sin x x interpolation computes record points using a curve fit between the actual samples acquired Linear interpolation computes record points between actual acquired samples by using a straight line fit Variable Persistence makes data persist for a specified time New waveform displays accumulate data as new waveform records acquire but with continuous replacement of the oldest data Set a time at which the oldest data is removed Infinite Persistence makes data persist until you change some control or explicitly clear the data Waveform displays accumulate data as new waveform records acquire resulting in a build up of data in all time slots Use the Graticule settings to select the graticule style and the graticule color and screen back ground CSA8200 amp TDS8200 Series Quick Start User Manual Setups E E wfm Database Hist Cursor Meas Vert Horz Acq Trig Phase Het Mask TDA Dispo Style Normal Interpolation Rinada 5 Vanable Persistence T ime aH Infinite Persistence Graticule Style Full Background Fonegraurd LO Acquisition 29 Triggers Triggers This section contains concepts and procedures for us
69. nframe Refer to the Specifications and Performance Verification manual for a complete list of specifications Mechanical Clearance 457 mm 18 in Top Front and Rear 0 in 0 mm S Sides 2 in 51 mm E Bottom 0 75 in 19 mm gt o oo O O O Weight S 2070 o 343 mm m 19 5 kg 43 0 Ib This does not include S 2D O pM any accessories or modules a O O O O O Depth 419 mm 16 5 in Environmental Temperature 10 C to 40 C Relative humidity 20 to 80 with a maximum wet bulb temperature of 29 C at or below 40 C Altitude 3 000 m approximately 10 000 ft Power Supply Source voltage and Frequency 100 240 Vans 10 50 60 Hz or 115 Vans 10 400 Hz Power Consumption 240 watts fully loaded 160 watts mainframe alone with no modules Input Connectors Trigger Direct Input range 1 5 V DC peak AC maximum input voltage Trigger Prescaled Input absolute maximum 2 5 Vp p input typical External 10 MHz Reference Input 500 mVp p to 5 Vp p AC coupled into 1 kQ2 5 V maximum Gated Trigger Input non destruct levels 5 V maximum Option GT equipped mainframes Certifications Pollution Degree Pollution Degree 2 Note Rated for indoor use only 4 CSA8200 TDS8200 Series Quick Start User Manual Installing Modules T CAUTION Never install or remove modules while the instrument is powered
70. ock ratio default is 1 1 S Select a Relative Trigger Bit in the range of 0 to Pattern Length 1 default is 0 Use the AutoSync feature to auto matically detect the data rate pattern length and or data to clock ratio of the applied data and clock signals data to a sampling module channel and the clock to the Pattern Sync module Enable FramesScan to to automatical ly scan through a pattern or part of the pattern The FrameScan control is tied to the FrameScan control in the Horizontal Setup dialog box changing either one affects the other Quick Tips CSA8200 amp TDS8200 Series Quick Start User Manual Triggers Pattern Sync E4 Pattern Sync Module AutoSyne Options Source C7 Hon uta sunt Data Rate fe22 1 Mbps ale List P Data Rate Pattern Length 127 bits DS List Pattern Length sosa E 4 Edit Data Clock Ratio FrameSean Scan Bits Relative ln S Trigger Bit a Enabled Er o ws All pattern sync controls are disabled grayed out if there are no available pattern sync sources The default selected pattern sync source is the lowest numbered pattern sync module The Data Rate in the Pattern Sync dialog box is tied to the Bit Rate control in the Horizontal setup dialog box changing either one affects the other If the entered Data Rate does not match the rate of the selected communication standard in the Horizontal Setup then th
71. on Use an ESD wrist strap when installing or removing modules and when connecting signals to the module inputs Do not transport or ship the instrument with modules installed 1 Always use an ESD wrist strap pro vided when installing and removing modules 2 You can install up to two large sam pling modules and four small modules for a total of 8 inputs Install Your Instrument QJIPUT Small module compartment 4 Large module compartment 2 Following are some typical module installations illustrating the interaction between large compartment channels and small compartment channels NOTE A large compartment module that only derives power from the compartment does not use any small compartment input channels Eight channels No large and four small modules Six channels Two large modules and two small modules Seven channels One large module installed in CH3 compartment and three small modules Seven channels One large module installed in CH1 compartment and three small modules CSA8200 amp TDS8200 Series Quick Start User Manual CH1 Module not installed CH3 Module not installed CH 1 CH 2 CH3 CH4 CH5 CH6 CH7 CH1 module installed CH3 module installed CH1 US 19 A
72. on and gently rub the display surface Avoid using excess force or you may damage the plastic display surface Optical Connector Cleaning When using optical modules the measurement accuracy is increased or maintained by keeping the optical connectors clean It s important to follow the procedures for cleaning optical connectors provided in the manual for your optical module CSA8200 amp TDS8200 Series Quick Start User Manual 71 Cleaning the Instrument 72 CSA8200 amp TDS8200 Series Quick Start User Manual Index A Accessories 3 Acquisition set Stop mode amp action 28 Acquisition modes how to set 28 Annotations 40 show 38 Auto trigger mode 30 Automatic measurements how to localize gates 40 Autoset 26 C Calibration 20 Certifications 4 Characterize phase correction 53 Cleaning instrument how to 71 Cleaning and inspection exterior 71 flat panel display 71 Cleaning optical connectors 71 Clock recovery trigger source 31 Communication signal 47 mask testing 48 Compensation 20 how to perform 20 Connectors EXTERNAL DIRECT 31 EXTERNAL PRESCALE 31 trigger 31 Control panel 12 Control panel map 14 Controls bar 13 Cursor measurements 42 D Dark level compensation how to per form 22 Default setup 26 Setup boxes 27 Diagnostics 18 Dimensions 4 Display map main amp mag views 15 map main view 15 style 29 waveform 13 Display map 15 Document result
73. onnector The Slope and Level controls apply only when the trigger source is set to External Direct Selecting External Prescaler as the trigger source requires an appropriate trigger signal be connected to the TRIGGER PRESCALE INPUT connector Selecting External Prescaler sets the trigger Mode to Normal Selecting Internal Clock uses the clock frequency setting in the pulldown list S Selecting Clock Recovery requires that a module is installed with clock recovery available Select the clock recovery standard from the pulldown lists or user specified range controls Gated Trigger is only available with Option GT Pattern Sync trigger is only available if a PatternSync module is installed The trigger output from the PatternSync module must be connected to the TRIGGER DIRECT INPUT connector Selecting Pattern Sync as the trigger source presets several trigger controls to predefined settings appropriate for using the external TRIGGER DIRECT INPUT connector 34 CSA8200 amp TDS8200 Series Quick Start User Manual Setting Pattern Sync Controls The Pattern Sync dialog box can be displayed when Pattern Sync is the selected triggering source 1 Select the parameters for the pattern sync module S Select the channel Source where the pattern sync module is installed Select the Data Rate bit rate default is 2 48832 Gbps S Select the Pattern Length default is 127 Select a Data Clock Ratio data to cl
74. ons IM Histogram Calor E lt Le Linear amp Logarithmic Limit Control Top 219 2mu aH Left Right feo 70000 SL 22 500 aH Bottom 277 Anv te Absolute Fie Edit View Setup Utilities Applications Help Triggered Tektron x E fe AT EZ Acq Mode Sample FATE fo oy EIS Ape M Puse E S A aln RIR SL ellla la gt Mean 22 81m Median 42 50m w Std Dew 146 9m w Pk Pk 402 Brnv pelo 53 6 pao 100 0 peso 100 0 Peak 13286 Hits 690208 avis 8384 les fr00 0mv BES man RA O00ps 500r oS He 3 57 Pm 3 26 2004 CSA8200 amp TDS8200 Series Quick Start User Manual Document Your Results Analyzing Waveforms This instrument can save any number of waveforms limited only by the space you have to store them By saving a waveform you can recall it at a later time for comparison evaluation and documentation This capability is helpful when you want to Recall a waveform for further evaluation or comparison with other waveforms Extend the waveform carrying capacity of the instrument The instrument supports eight reference eight channel and eight math waveforms If you want more than eight reference waveforms you can save the additional reference waveforms to disk for recall later To Save a setup or a waveform click Save Setup or Save Waveform in the File menu To export waveform data into a comma separated ASCII file click Export
75. or are fed directly to the trigger circuitry The signal is DC coupled and can be up to 3 0 GHz CSA8200 amp TDS8200 Series Quick Start User Manual 31 Triggers 32 When using a given trigger source disconnect any other trigger source from the front panel to ensure specified performance Specifically Do not connect a signal to the TRIGGER DIRECT or TRIGGER PRESCALE front panel connector unless you ve selected that input as the trigger source in the Trigger setup dialog box Donot connect a signal to the External 10 MHz Reference front panel connector unless you have selected that input as the timebase mode in the Horizontal setup dialog box Gated Trigger Connector Option GT Equipped You can attach a BNC cable to the External Gate input at rear panel TTL connection to selectively exclude data from acquisition by means of gating the trigger on and off Several conditions must be met to get a stable display of waveform data m The channel and trigger must be otherwise triggerable without the trigger gate The gating signal must be at a TTL high The triggering system must be enabled and the instrument will acquire Enhanced Triggering These features can help stabilize triggering and perform special measurements High Frequency Triggering High Frequency triggering increases trigger sensitivity of the trigger circuit by decreasing hysteresis a transition or noise band allowing triggering on higher frequency s
76. pdhas fjskdmd fkjvpo Hd p dfo sdekjg bn io jzkv lv lvr Pidm d ddn Ybdg gjd ELX 3564 djdn 2d Gfm djk gpmnrbw dkjd djs a Ka rc S pl ndidkddr pdhas fiskdmdmfk f kf vkf fkjvpo fid p dfo sdekjg bn 1 O jd ddjdmdjdkddf pdhas fiskdmd Ujdnd pejfnm ELX 3564 Ujdk donnf Iflfm fkfo Idm dd gpmnrbw dkjd djs as dkd If T tkjdsmshd djkd dd O jd ddjdmdj dkddf o jzkv lv lvm Pidm d ddn Ybdgjd ELX 3564 pdhas fjskdmdmfk f kf vkf fkjvpo nd n dfo sdekjg djdmd Jjdk donnf Iflfm fkfo dd gpmnrbw dkjd djs sbs dkd peer nshd djkd dd O jd ddjdmdj dkddf pdhas fjskdm da veb fid y dfo sdekjg bn io jzkv Pidm d ddn Ybdgjd ELX 3564 N dkjd djs de dkd If f fkjdsn nshd djkd dd O jd ddjdmdjdkddf pdhas fiskdmdmfk f kf S jzkv lv Pidm d ddn Ybdgjd ELX 3564 didm ad G fm fkfo Idm dd gpmnrbw dkjd djs sbs dkd If f fkjdsmsh d djkd dd O jd Ybdgjd ELX 3564 djdmd O jd ddjdmdjdkdd pdhas fjskdmdmfk f kf vkf pani fkfo Idm dd gpmnrbw dkjd djs sbs dkd If f Sr 3 beas ishd Ja dd Gfm fkfo ldm dd A RLR porns Be raves Be Pe nate nro ath dkjd djs sbs dkd If f fkjdsmshd dd Ujdk donnf Iflfm fkfo Idm dd 59 Using the 80A05 Electrical Clock Recovery Module Examples Using the 80A05 Electrical Clock Recovery Module Examples This section contains various ways to use an 80A05 Electrical Clock Recovery module with other optical and electrical sampling modules The 80A05 brings a new standard for ease of use to sampling oscilloscop
77. rage lt Trig Intemal Clod lt 200kHz lt A MI Te lr PEE a IN ulj v 133 da 3 Waveform C3 20 00 giv Drag the border between graticules to vertically size Main Mag1 and Mag2 Views E aj BZ 15 E 2 pana aH Main q q 221 300ps eE 21 1891 af gc 3 27 PM 2 9 2004 CSA8200 4 TDS8200 Series Quick Start User Manual 15 Getting Acquainted with Your Instrument Accessing Online Help In depth information about all the features of your instrument is available in the online help 16 For a brief description of controls move your mouse pointer and let it rest over a control such as a menu name a menu item tool bar button or tool bar readout The help system displays a short defini tion or a label tooltips of the control For a more detailed description click the What s This button in the main display or in a dialog box After clicking the What s This button click on the control you want described A popup box describes the control File Edt View Setup Utilities Applications Help Triggered 2 f atiek cA a Acg Mode Sample 9 Pulse 9 Timing Tektronix x 4 229 1 m II App R h2 s This the main display Wal E GORE 765 l What s This button in Phase Ref Mask TOR Disp op baes Wim Database Hist Cursor Meas Vert Horz Acq Trig Semele a Trig E stemal Dir Wim Database Hist Cursor Meas O Phase Bel Mask TOR Disp
78. re further divided into categories amplitude time and area 1 Use the Vertical buttons to select the waveform to be measured The waveform may be a channel reference or math waveform 2 Select one of the signal waveform types and then select a category from the measurement bar 3 Click the measurement you want in the measurement tool bar 4 Read the results in the measurements readout CSA8200 amp TDS8200 Series Quick Start User Manual File le fe Tul A Buse Pulse Timing si Puls Fit Edit iew Setup Utilities E Edit iew Setup Utilities Appli Appl Utilities Applications Help Triggered UT Acc Mode Sample 9 Trig E stemal Direct 9 Oalah lt la ala Measurement D Rize CR 2 941 SB d Spe Min S09 086ps Max 556 509ps 21 6 Sigs 5 35199ps 37 Analyzing Waveforms 38 To see statistics 5 Right click on any measurement read out to display its context menu 6 Select Show Statistics to display measurement statistics in the mea surement readout To show annotations 7 Right click on any measurement read out to display its context menu 8 Select Show Annotations to display annotations that indicate which portion of the waveform is being measured as well as reference levels for the mea surement 9 This is the portion of the waveform be ing measured 10 These are the reference levels for the
79. rm Set trigger level and use lights to monitor trigger state 14 CSA8200 amp TDS8200 Series Quick Start User Manual Getting Acquainted with Your Instrument Display Single Graticule View Drag the Horizontal Reference to move the point around which Drag cursors to measure the horizontal scaling expands and contracts the waveforms waveforms on screen File Edit View Setup Utilities Applications H Ip Ip Triggered onic l EST Sl L E Acg i iverage E E mal Clock E 200kHz lt App he ell Ff faa Waveform C3 100 0mwWdiv Drag the waveform icon vertically to position waveform G 100 0rm cti Cursors hin CH t1 9 938s D 13 3Bus amp 4040s Right click on a waveform or its icon for oe a handy access to often used setup ee A I controls and properties w Show GO BME E oc ae Ae RRR A Aart ae EEE Color Grade Tit 207 SKH2 Properties Drag ground reference icon to add offset Ne e to a waveform Drag across the waveform area to zoom the boxed waveform segment to full 286 army Z joa SEITE SSS ATA SEG ma Display Multiple Views Drag the markers to enclose the portion Drag the markers to enclose the portion of waveform to appear in Mag 1 View of waveform to appear in Mag 2 View File Edit View Setup Utilities Appli ations Help Triggered Tektronix _ x 8 3 alll 7 Rupe Fe ul 7 lunes cg Moda Ave
80. rom English to one of your choice This procedure does not change the language of the user interface or the online help in the TekScope application Before you begin minimize the TekScope application 1 Select Settings and then select Con trol Panel 2 Select Regional Options 3 Select your locale and then select your menus and dialogs language 4 Click Set default 5 Select locale 10 La Programs ES Documents Ae Search EA Help Run i STR St Taskbar amp Start Menu KH Shut Cowan Start Printers Regional Options S 5 Scanners and Cameras a Scheduled Tasks fle Sounds and Multimedia System Users and Passwords Regional Options HE General Numbers Currency Time Date Input Locales Seltings for the current user Many programs support international settings for numbers currencies times and dates Set the locale in order to use the standard settings Your locale location Japanese Fo Menus and dialogs O Central Europe O Cyrillic Set default T Advanced Select System Locale El E The system locale enables applications to display menus and dialogs in their native language Windows will use the code page and font settings of this language Menus and dialogs of Windows will not be affected Select the appropriate locale English United States 0 Indonesian Italian Italy Italian Switzerland CSA82
81. s 55 Documentation v Dots displaying waveform record points as 29 Dual monitor 8 E Emergency Startup disk 7 Enable histogram 54 Statistics histogram 54 Environmental specifications 4 Export waveform 55 Extended desktop 8 F Flat panel display cleaning 71 Frame trigger 31 Frame Scan 51 Front panel connectors 12 G Gated trigger 32 Graticule color 29 style 29 H H Bars cursor 42 High frequency triggering 32 Histogram enable 54 Statistics 54 Histograms 54 Holdoff triggering 32 Horizontal set up procedure 24 Incoming inspection 18 Indicator compensation 13 phase reference status 13 Infinite persistence 29 Input connectors specifications 4 Input frequency phase correction 53 Inspection and cleaning exterior 71 flat panel display 71 Instrument cleaning 71 Interface map 13 CSA8200 amp TDS8200 Series Quick Start User Manual Index K Knob trigger main LEVEL 30 L Language change 10 Level trigger 30 Linear interpolation 29 Map waveform display 15 Mask testing 48 autoset to a mask 49 stopping acquisition based on 49 Math editor 44 waveform 44 Measurement accuracy optimizing 20 Measurements 37 cursor 42 how to localize gates 40 turning off 41 Measurements bar 13 Mechanical specifications 4 Menu bar 13 Metastability reject triggering 32 Mode trigger 30 Normal trigger mode 30 0 Online help 16 di
82. s to adjust the Show Sas ClearState gates on screen such that the area to measure is between the gates Source Source Set to Default zourre Region HiLow RefLevel Gates 17 Click the Annotations box to have the measurement display annotations that indicate which portion of the waveform is being measured as well as reference levels for that measurement Slope os Direction 1 x M Statistics Weighting Help ole Annotations Quick Tips f at the time you first create a measurement the measurement source you select is displayed as a waveform database the database will automatically be measured Deselect the User Wfm Database option if you want to measure the vector waveform instead of the database Gate values are entered as a percentage of the waveform displayed from left to right If no keyboard is installed access the virtual keyboard and use the touch screen to enter values You can select and drag the gates to new locations by using a mouse or the touchscreen CSA8200 amp TDS8200 Series Quick Start User Manual Turning Off Automatic Measurements Analyzing Waveforms Up to eight automatic measurements can be assigned Once all eight slots are used no more can be assigned If you need to take another automatic measurement and all measurement slots are used make a slot available for the new measurement or redefine a current measurement slot 1 Note the assigne
83. s bit 4 of a PRBS7 signal the oscilloscope can adjust the skew in a simple way using channel deskew where first the data is captured with the timebase skew adjusted for one channel then for the second channel Most equipment can handle this method of deskew The number of triggers needed to fill the trace doubles relative to an un deskewed acquisition system More optimal performance can be obtained using modules with channel Delay capability or by using multiple modules See the information regarding Deskew and Delay CSA8200 amp TDS8200 Series Quick Start User Manual Skew and Deskewing Random Signal Random signals are signals that don t necessarily repeat on equivalent trigger events from acquisition to acquisition One example would be acquiring a random or pseudo random serial data bit stream for example a PRBS7 signal while triggering directly on its associated serial clock or from the data stream s recovered clock In the case of random signals the oscilloscope must acquire each waveform sample of both differential branches from exactly the same trigger event Otherwise due to the signal s random nature one of the samples of the differential pair may have changed value from an absolute real time perspective and yield incorrect results when viewing the mathematical differential or common mode waveform To ensure that random differential or common mode signals can be properly time aligned the TDS8200 and CSA8200 o
84. scilloscopes allow the skew to be adjusted between individual modules by way of independent acquisition timebases not available in phase reference mode This is called channel Deskew In addition some modules e g the 80E06 80E07 80E08 80E09 and 80E10 contain an additional and highly useful skew adjustment capability called channel Delay While both deskew and delay allow you to compensate individual channels for skew differences introduced externally from the instrument they are implemented differently Deskew is applied to the strobe drive of the module common to both channels in the module Therefore when the deskew values differ between the channels within that module the instrument automatically performs separate acquisitions for each channel on different sets of triggers in order to satisfy the requested deskew difference On the other hand delay is applied only to the individual channel within the module itself Therefore to retain maximum performance keep the deskew values for both channels in a single sampling module the same and use the Delay control if possible Differential TDR Deskew Method The following procedure outlines a method to deskew a single differential or common mode system one signal pair This procedure utilizes autoset features found in software version 2 5 and above The procedure can be extended to additional signals when appropriate TDR modules are used Generally speaking the dual channel 80E10 and 8
85. splaying control descriptions 16 displaying overviews 17 using the finder 17 Operating specifications 4 p Pattern Sync trigger source 31 Phase correction 53 characterize 53 input frequency 53 Phase reference 53 Power supply specifications 4 Print 55 73 Index Procedure to compensate the instrument and modules 20 to localize a measurement 40 to perform dark level and user wavelength gain compensa tions 22 to set acquisition modes 28 to set up the signal input 24 R Readout display 13 Readouts 13 Readouts bar 13 Rear panel connectors 12 Recovery disk 7 Related documentation v S Save setup 55 waveform 55 Serial mask testing 48 Setup save 55 Signal communication 47 Sin x x interpolation 29 Single sequence 28 Slope trigger 30 Sources trigger 30 Specifications certifications 4 environmental 4 input connectors 4 mechanical 4 74 operating 4 power supply 4 Start an acquisition 28 Status bar 13 Stop an acquisition 28 T TDR 52 Temperature compensation 20 Tool bar 13 Trigger clock recovery source 31 concepts 30 33 connector 31 event 30 EXTERNAL DIRECT connector 31 EXTERNAL PRESCALE connector 31 frame 31 level 30 modes 30 pattern sync 31 slope 30 sources 30 type 30 Trigger inputs usage limitations 32 Trigger MAIN LEVEL knob 30 Trigger source usage limitations 32 Triggering based on application 31 ed
86. ted in the online help Check the Tektronix Web site www tektro nix com for the most current information Standard Accessories Accessory CSA8200 Communications Signal Analyzer TDS8200 Digital Sampling Oscilloscope Quick Start User Manual Certificate of Traceable Calibration for product at initial shipment Business reply card 1 Windows compatible keyboard 1 Windows compatible mouse 1 Instrument front cover 1 Accessory pouch 2 Touchscreen styluses 1 ESD wrist strap with 6 foot coiled cord CSA8000 amp TDS8000 Series Product Documentation Kit CD CSA8000 amp TDS8000 Online Help part of application software CSA8000 amp TDS8000 Programmer Online Guide part of application software Oscilloscope Analysis and Connectivity Made Easy manual and CD with connectivity examples CSA8000 amp TDS8000 Series Windows 2000 OS Restore Kit CSA8000 amp TDS8000 Series Product Software Kit 8000 Series Demo Applications Software CD 1 Power cord CSA8200 amp TDS8200 Series Quick Start User Manual Tektronix part number 071 1482 xx Not orderable Not orderable 119 B146 00 119 6936 00 200 4519 00 016 1441 00 119 6107 00 006 3415 04 020 2543 xx Not orderable Not orderable 020 2449 xx 020 2527 xx 020 2526 xx 020 2480 xx Type dependent on selection during order placement Install Your Instrument Operating Considerations The following information lists the specifications related to the operation of the mai
87. th the branch done disconnect the branch from CH1 and terminate it properly Now do the deskew measurement for the branch the same way as for the branch Now adjust the fixture to remove the skew Refer to Methods to Adjust Out Skew on page 66 Using TDR Step from spare TDR capable module Use the TDR step generation capability from a spare TDR capable module channel as the signal source into your differential probe or circuit first for one branch then for the other Set the oscilloscope trigger source Trigger setup menu to Internal Clock Turn on the TDR Step TDR setup menu and set its Polarity to positive going i e rising edge Using a TDR step rather than the Internal Clock Output is preferred in order to obtain better deskew accuracy in high speed systems due to it s faster edge Methods to Adjust Out Skew 66 Using a Phase Adjuster Skew can be adjusted out with the use of a variable delay line Phase Adjuster Tektronix part number 015 0708 00 is a Phase Adjuster with a 25 ps range and VSWR of 1 3 1 at 18 GHz The advantage of a Phase Adjuster is that it is functionally invisible The disadvantage is that signal fidelity is slightly impacted Deskew with the Acquisition System Repetitive Signal This method relies on the fact that your signals are completely repetitive relative to the trigger of your sampling oscilloscope If for each trigger there is always the same signal for example alway
88. the front panel Select the other channel and press Autoset Given reasonably matched cables to the DUT both reflected edges at the reference plane should be displayed near the 3rd horizontal graticule If not increase the Horizontal Scale until both reflected edges are displayed Adjust Horizontal Scale and Position if necessary such that the two reflected edges are visible and apart from each other in order to obtain good horizontal resolution A 10 100 ps div horizontal scale is a typical target CSA8200 amp TDS8200 Series Quick Start User Manual 69 Skew and Deskewing 8 Either visually or by setting up a delay measurement between the channels adjust the TDR Step Deskew TDR setup menu to align the reflected edges The instrument should now be set up to accurately make differential or common mode TDR measurements NOTE For future use with the same configuration the same instrument modules cables and or fixtures save the setup from menu bar File gt Save Setup As 70 CSA8200 amp TDS8200 Series Quick Start User Manual Cleaning the Instrument Cleaning the Instrument Periodically you may need to clean the exterior of your instrument To do so follow the instructions in this section T WARNING Before performing any procedure that follows power down the instrument and disconnect it from line voltage Exterior Cleaning CAUTION To prevent getting moisture inside the instrument during external cleaning use
89. the location of different types of information available for this product WWW Tektronix com Unpacking Installation Operation amp S Overviews K PDF files of 8000 series instrument amp modules In depth Operation UI Help Programming Help manuals Analysis amp Connectivity Tools laar Product Documentation Online Help CD Demo Analysis amp icati Connectivity Tools Applications i Demo apani Applications Software CD OpenChoiceTM Solutions Manual System Restore Software Product Software Product Software System Restore Booklet Booklet Performance Verification and Self service Specifications CO lt me Product Documentation Optional Service CD Manual CSA8200 amp TDS8200 Series Quick Start User Manual V Preface Conventions Used in this Manual The following icons are used throughout this manual Rear panel Front panel Connect pow Network PS2 SVGA USB power power 0 Se A A vi CSA8200 8 TDS8200 Series Quick Start User Manual Key Features Key Features The CSA8200 and TDS8200 Series instruments are high speed precision sampling systems that find use in validation and conformance testing and impedance verification for High performance semiconductor computer applications such as semiconductor testing TDR characterization of circuit boards I
90. tial signals might need to be deskewed as described in the Skew and Deskewing section on page 63 The signal outputs of the 80A05 are unused capped with their 50 2 terminations in this example The connections for acquired signal s are not shown in the illustration a eo O O O O O 200 gt at O Lar Je po gt O O Q J 80A05 module Input signals Figure 2 Clock recovery trigger with the 80A05 module setup example CSA8200 amp TDS8200 Series Quick Start User Manual 57 Using the 80A05 Electrical Clock Recovery Module Examples Clock Recovery Trigger for Optical Signal with the 80C12 Optical Module In this example the single ended electrical split signal from the 80C12 module s Electrical Signal Out is connected to the 80A05 module s Electrical Signal In The 80A05 delivers the recovered clock signal from the 80C12 to the mainframe to be used for triggering by setting the trigger source to Clock Recovery for the channel the 80A05 occupies The signal outputs of the 80A05 are unused capped with their 50 2 terminations in this example O O O o OP O O O O OFU e O a O S A Lee o de O O Q IJ LJ ELECTRICAL SIGNAL OUT from 80A05 module 80C12 connected to ELECTRICAL
91. to each grading partition 10 Select one of the four grading meth ods 11 If you selected one of the two Empha sized grading methods slide the Em phasize Counts percentage control to specify the range of counts you want emphasized Quick Tip Certain measurements require the use of a waveform database and automatically set the measurement system to use a waveform database if available setups CBS D Phase Ref Misk TDA Dip Yet Hoz Acq mos wfm Database Hist F l wimde 1 ra On RE Display r 5 a 8 pres Ci a Clear Data Persistence O Y Infinite a C Variable xi 2000 waveforms 900 5 110 Samples A a Options E Color Al Invert Intergity Dr Method Emphasized S l 1 Emphasize Counts 50 0 O SE CSA8200 TDS8200 Series Quick Start User Manual Analyzing Waveforms Display a Communication Signal 1 Carefully install the sampling module in the instrument Refer to the procedure and cautions in Installing Modules on Eln U page 5 You should also read the user Z O O manual for your specific module 2 S S E S 2 Connect signals to your sampling mod o0 ule Always observe static safe proce J dures and cautions as outlined in your po sampling module user manual when i E y O connecting signals O O O E
92. unication standards Powerful built in measurement capability including histograms mask testing and automatic measurements Automatic measurements operate on Pulses RZ eye patterns and NRZ eye patterns DC to 65 GHz optical bandwidth DC to 70 GHz electrical bandwidth with up to 12 5 GHz triggering NOTE Bandwidth is determined by the specific modules that are installed CSA8200 amp TDS8200 Series Quick Start User Manual Low jitter 200 fs typical in phase reference modes with the 82A04 Phase Reference module FrameScan acquisition for isolating data dependent failures during conformance performance testing and for examining very low level repetitive signals Jitter analysis with the 80SJNB Advanced Jitter Noise and BER Analysis Software for the TDS CSA8000 Series Sampling Oscilloscopes application requires software key Refer to the 8000 Series Product Software CD ROM booklet for free trial information and software key use Pattern frame triggering with the 80A06 PatternSync Trigger module Key Features Improved acquisition throughput and timing accuracy using the PatternSync Trigger module in conjunction with FrameScan Support for optical conformance testing of SONET SDH signals including the various forward error correction rates for these telecom rates from 155 Mbps to 43 Gb s FibreChannel signals and 1 2 and 10 Gigabit Ethernet signals as well as 2 5 Gb s Infiniband signals NOTE Support for conformance
93. waveform they are easier to localize to a waveform segment or feature than automatic measurements 1 Press the CURSORS button once for Vertical Bars twice for Horizontal Bars three times for waveform cursors Cursor selection is also available from the Setup menu 2 Press the SELECT button to toggle selection between the two cursors The active cursor is represented by a solid line 3 Turn the General Purpose knob to position each cursor on the waveform to measure the feature that interests you 4 Vertical bars V Bars measure horizontal parameters 5 Horizontal bars H Bars measure amplitude parameters 42 SETUP DEFAULT DIALOGS PRINT SETUP a TOUCH SCREEN sis SELECT f Phase Ref Mask TDR Disp Vert Horz Acq Trig wfm Database Hist Cursor Meas C Waveho CSA8200 amp TDS8200 Series Quick Start User Manual 6 Waveform cursors measure vertical and horizontal parameters simulta neously Waveform cursors are at tached to the waveform and track with the waveform points 7 Read cursor measurement results in the display 8 Click this button to toggle the cursor readouts on and off Quick Tips Analyzing Waveforms File Edit View Setup Utilities Applications Help Triggered Tektronix Telaronix SEZ 3 2 Le pajni a BnS Acg Mode Sample Trig Estemal Direct s 300rnv E Pulse 00 0rn e Amplitude net nnn in r 200

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