Home

TEK TLA SERIES Service Manual

1. Most significant digit Figure 2 1 Logical address switches Dynamic Auto Configuration With Dynamic Auto Configuration selected hexadecimal FF or decimal 255 the system automatically sets the address to an unused value For example if there are devices set to addresses 01 and 02 already in your system the resource manager will automatically assign the DSO module an address other than 01 or 02 Static Logical Address Static logical address selections set the address to a fixed value If you use static logical addressing each device within your system must have a unique address to avoid communication problems TLA Series Digitizing Oscilloscope Modules Service Manual Operating Information Installing the DSO Module The DSO module can be inserted into any two adjacent slots in the mainframe except Slot 0 Be sure the logical address is set before installation see Setting the Logical Address on page 2 1 Use the following procedure and Figure 2 2 to install the digitizing oscilloscope into the mainframe 1 Ifyou have not already done so power the mainframe off 2 Insert the DSO module into the mainframe top and bottom module guides and push it partially into the mainframe Figure 2 2 Then slide the module into the mainframe as far as it will go without forcing it 3 Use the ejector handles to secur
2. eee 5 5 Table 6 1 External inspection checklist esee 6 4 Table 6 2 Internal inspection checklist ee 6 5 Table 6 3 Tools required for parts replacement 6 8 Table 6 4 Failure symptoms and possible causes 6 26 Table 6 5 Power supply fault location table 6 32 Table 6 6 Diagnostic tests celle 6 33 Table 10 1 Standard accessories eese 10 1 TLA Series Digitizing Oscilloscope Modules Service Manual Ar NE General Safety Summary To Avoid Fire or Personal Injury 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 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 indirectly grounded through the grounding conductor of the mainframe power cord To avoid electric shock the grounding conductor must be connec
3. 2 0 eee cece eee eee 6 27 Adjustment After Repair ierre idadi cece ee eee 6 34 Repackaging Instructions ccc cece cece cece rece eens 6 35 Packapino 2 27 a tate XE ES pue ue aee noL ERAT ER EE 6 35 Storage vov Vete peo edes t sea et uu ett Cus etse 6 35 Options Tektronix Service Options 0 0 eee eee ee ee eee eee 7 1 Replaceable Electrical Parts Diagrams Replaceable Mechanical Parts Standard Accessories 0 eee cece eee eee ence eens 10 1 Parts Ordering Information 0 0c cece cece 10 1 Using the Replaceable Parts List 0 0 0 0 cee eee eee eee eee 10 3 ii TLA Series Digitizing Oscilloscope Modules Service Manual Table of Contents List of Figures Figure 2 1 Logical address switches Letto 2 2 Figure 2 2 Module retainer screws and ejector mechanism 2 3 Figure 2 3 Digitizing oscilloscope front panel 2 6 Figure 2 4 Typical system window eee 2 8 Figure 4 1 Calibration certification procedure flow chart 4 2 Figure 4 2 Calibration and Diagnostics property sheet 4 5 Figure 4 3 Initial setup for the DC gain accuracy test 4 14 Figure 4 4 Initial setup for the analog bandwidth test 4 16 Figure 4 5 Using a power meter to monitor the amplitude of the sine wave generator during the analog bandwidth test 4 17 Figure 4 6 Initial setup for the delay between channels test
4. 0 25 x offset 15 mV 6 x full scale range 0 25 x offset 150 mV 6 x full scale range Analog Bandwidth DC 50 Coupled Full Scale Range Setting Bandwidth 10 1 V 100 V 100 mV 10 V 50 mV 99 5 mV 20 mV 49 8 mV 10 mV 19 9 mV DC 500 MHz TLA7E1 and TLA7E2 DC 500 MHz TLA7D1 and TLA7D2 DC 1 GHz TLA7E1 and TLA7E2 DC 500 MHz TLA7D1 and TLA7D2 DC 750 MHz TLA7E1 and TLA7E2 DC 500 MHz TLA7D1 and TLA7D2 DC 600 MHz TLA7E1 and TLA7E2 DC 500 MHz TLA7D1 and TLA7D2 DC 500 MHz TLA7E1 and TLA7E2 DC 500 MHz TLA7D1 and TLA7D2 1 Netoffset is the nominal voltage level at the DSO module input that corresponds to the center of the A D Converter dynamic range Offset accuracy is the accuracy of this voltage level The limits given are for the ambient temperature range of 0 C to 30 C Reduce the upper bandwidth frequencies by 5 MHz for each C above 30 C The bandwidth must be set to FULL 1 2 TLA Series Digitizing Oscilloscope Modules Service Manual Specifications Table 1 2 Signal acquisition system Cont Characteristic Description Bandwidth Analog Selections 20 MHz 250 MHz and FULL on each channel Calculated Rise Time typical TLA7D1 and Typical flkbandwidih iss mesne honte SET Hago Sono TEAKE VANI FERES AUDE chart to the right 10 1 V 100 V 900 ps 900 ps 100 mV 10 V 450 ps 900 ps 50 mV
5. 4 19 Figure 4 7 Initial setup for the timebase accuracy test 4 20 Figure 4 8 Initial setup for the main trigger accuracy test 4 22 Figure 4 9 Initial setup for the main trigger sensitivity test 4 23 Figure 4 10 Initial setup for the probe compensation test 4 24 Figure 5 1 Initial setup for the base calibration adjustment 5 6 Figure 5 2 Initial setup for the frequency response adjustment 5 8 Figure 5 3 Using a power meter to monitor the amplitude of the sine wave generator during the frequency response adjustment 5 9 Figure 5 4 Initial setup for the channel to channel skew adjustment 5 12 Figure 5 5 Initial setup for the probe compensation test 5 13 Figure 6 1 Injector ejector handle replacement 6 9 Figure 6 2 Cover removal 0 ccc cece eee c eee ceceeeees 6 10 Figure 6 3 Seating the cover on the chassis 00 00 6 12 Figure 6 4 Processor board removal eese 6 14 Figure 6 5 Inserting processor board tab into front subpanel 6 15 Figure 6 6 BNC replacement e eee 6 16 Figure 6 7 Fuse replacement 0c ccc ce cece ceececes 6 18 Figure 6 8 Probe interface replacement 00 00 6 20 Figure 6 9 Acquisition board replacement ee 6 22 Figure 6 10 Rear EMI gasket removal eeeeees 6 23 Figure 6 11 Rear EMI gasket replacement e 6 24
6. 3 Lift the gasket fingers and rotate the gasket off 2 Rotate Figure 6 10 Rear EMI gasket removal TLA Series Digitizing Oscilloscope Modules Service Manual 6 23 Removal and Installation Procedures Installation Use the following procedure to install the rear EMI gaskets 1 Position each gasket so the gasket fingers face the outside of the digitizing oscilloscope 2 Pick up each gasket at the end where the gasket finger is formed up Then rotate the gasket on As you do this lift up any fingers that bind to the chassis or cover 3 Slide each gasket gently from side to side to ensure that the gasket snaps in place 1 Slide open end on lt 2 Rotate into place lifting any gasket finger that S NY 3 Make sure gasket snaps into holes by pulling on gasket Figure 6 11 Rear EMI gasket replacement 6 24 TLA Series Digitizing Oscilloscope Modules Service Manual Troubleshooting A Service Level WARNING Before doing this or any other procedure in this manual read the General Safety Summary and Service Safety Summary found at the beginning of this manual Also to prevent possible injury to service personnel or damage to electrical components read Preventing ESD on page 6 1 This section contains information and procedures designed to help you isolate faults to within the DSO module The process is as follows m Do Check for Common Problems on page 6 26 to eliminate easy to find problems first
7. NOTE This installation program uses parameters you supply to create a custom start up file in your hard disk directory The batch file enables the software to configure your instrument properly before it runs the program 1 Power on the instrument 2 Exit the Application If your logic analyzer already has PV Adjust software loaded on it you must verify that the version is the same as the version printed on Disc 1 of the Tektronix Logic Analyzer Family Application Software CD If the version of the PV Adjust software loaded on your logic analyzer is an earlier version you must delete the earlier version before you can load the newer version If your logic analyzer already has a directory named Tekcats or Temptek on the hard drive the software installation cannot be completed Follow these instruc tions to verify the directory is not present 1 Select Start Search For Files or Folders TLA Series Digitizing Oscilloscope Modules Service Manual Operating Information 2 In the Search for files or folders box type Tekcats or TempTek and then click the Search Now button for search for either directory 3 Ifeither directory is found follow the instructions under Removing the Software to remove the software and the directories Install the PV Adjust Follow these instructions to install the PV Adjust software Software Close all open windows on the desktop 2 Insert Disk 1 of the Tektroni
8. Delay Between Channels DSO module SW test name Equipment required Prerequisites This procedure checks the delay between channels for the full bandwidth of the DELAY BETWEEN CHAN Sine wave generator item 14 Precision BNC cable item 12 Dual input BNC cable item 9 Type N to BNC adapter item 10 Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 6 Power up diagnostics pass INTERNAL CAL test passes Use the dual input cable or a set of matched cables when running this test If you use unmatched coaxial cables the test may fail or may be miscalibrated due to an electrical mismatch between the cables DSO module CH1 Precision BNC cable Dual input cable Sine wave generator Type N to BNC adapter Figure 4 6 Initial setup for the delay between channels test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 TLA Series Digitizing Oscilloscope Modules Service Manual 4 19 Performance Verification 4 20 DSO Procedure 7 Timebase Accuracy This procedure checks the long term sample rate and delay time accuracy of the
9. m Do Eliminate Other Problem Sources on page 6 26 to eliminate the mainframe probes and other modules as the fault s source next m Do Troubleshoot the Digitizing Oscilloscope Module beginning on page 6 27 to isolate locate the failed replaceable part within the module If you have replaced a faulty circuit board or assembly found using these procedures you must complete the performance verification and adjustment procedures as described earlier in this manual This section supports isolation of faults within the DSO module to the replace able part level that s reflected in the replaceable parts list in Chapter 10 In most cases faults are isolated to circuit boards or assemblies but not to individual components on those boards Fault isolation is supported to the following replaceable parts m Processor Board A1 m Acquisition Board A2 m Power supply fuses m Probe interface flex cable m 100 pin ribbon cables TLA Series Digitizing Oscilloscope Modules Service Manual 6 25 Troubleshooting Check for Common Problems Use Table 6 4 to quickly isolate possible failures The table lists problems related to the DSO module and possible causes The list is not exhaustive but it may help you eliminate a problem that s quick to fix such as a blown fuse or loose cable Table 6 4 Failure symptoms and possible causes Symptom Possible cause s Modules not recognized Modules not fully inserted make sure front of
10. 200 V 1 0 0 5 0 2 Settling Time Parameters 5 The AC Coupled Lower Frequency Limits are reduced by a factor of 10 when 10X passive probes are used 6 The sensitivity ranges from 10 mV to 100 V full scale in a 1 2 5 sequence of coarse settings Between coarse settings you can adjust the sensitivity with a resolution equal to 1 of the more sensitive coarse setting For example between the 500 mV and 1 V ranges the sensitivity can be set with 5 mV resolution 7 The Full Bandwidth settling errors are typically less than the percentages from the table 1 4 TLA Series Digitizing Oscilloscope Modules Service Manual Specifications Table 1 3 Timebase system Characteristic Range Extended Realtime Sampling Rate Range Realtime Sampling Rate Record Length Long Term Sample Rate Accuracy Description 5 S s to 10 MS s in a 1 2 5 5 sequence Products Limits TLA7E1 and 25 MS s to 5 GS s on all channels simultaneously in a TLA7E2 1 2 5 5 sequence TLA7D1 and 25 MS s to 2 5 GS s on all channels simultaneously in a TLA7D2 1 2 5 5 sequence 512 1024 2048 4096 8192 and 15000 100 ppm over any interval 1 ms TLA Series Digitizing Oscilloscope Modules Service Manual 1 5 Specifications Table 1 4 Trigger system Characteristic Accuracy Time for Pulse Glitch or Pulse Width Triggering Accuracy DC for Edge Trigger Level DC Coupled Range Time for Pulse Glitch and Pulse Width Trigge
11. 99 5 mV 600 ps 900 ps 20 mV 49 8 mV 750 ps 900 ps 10 mV 19 9 mV 900 ps 900 ps Crosstalk Channel Isolation 300 1 at 100 MHz and 100 1 at the rated bandwidth for the channel s sensitivity Full Scale Range setting for any two channels having equal sensitivity settings Delay Between Channels Full Bandwidth x100 ps with equal full scale Range and Coupling settings Digitized Bits Number of 8 bits Effective Bits Realtime Sampling typical Input Frequency TLA7E1 and TLA7D1 and TLA7D2 2 5 GS s TLA7E2 5 GS s each Channel each Channel 10 2 MHz 6 2 bits 6 2 bits 98 MHz 6 1 bits 6 1 bits 245 MHz 6 0 bits 6 0 bits 490 MHz 5 7 bits 5 7 bits 990 MHz 5 2 bits N A Frequency Limit Upper 20 MHz Bandwidth 20 MHz Limited typical Frequency Limit Upper 250 MHz Bandwidth 250 MHz Limited typical Input Channels Number of Product Channels TLA7E2 Four TLA7D2 Four TLA7E1 Two TLA7DI Two Input Coupling DC AC or GND4 3 Rise time rounded to the nearest 50 ps is calculated from the bandwidth when Full Bandwidth is selected It is defined by the following formula Rise Time ns 450 BW MHz GND input coupling disconnects the input connector from the attenuator and connects a ground reference to the input of the attenuator TLA Series Digitizing Oscilloscope Modules Service Manual 1 3 Specifications Table 1 2 Signal acquisition system Cont Characteristic Description Input I
12. Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification 7 Mfr Code This indicates the code of the actual manufacturer of the part 8 Mfr Part Number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI Y1 1 1972 Mfr Code to Manufacturer The table titled Manufacturers Cross Index shows codes names and addresses Cross Index of manufacturers or vendors of components listed in the parts list TLA Series Digitizing Oscilloscope Modules Service Manual 10 3 Replaceable Parts List Manufacturers Cross Index Mfr Code Manufacturer 00779 AMP INC 0J9P9 GEROME MFG CO INC 0JR05 TRIQUEST PRECISION PLASTICS 0KB01 STAUFFER SUPPLY CO 0KB05 NORTH STAR NAMEPLATE INC 22526 BERG ELECTRONICS INC 24931 BERG ELECTRONICS INC 27264 MOLEX PRODUCTS COMPANY 52961 NORTHWEST STAMPING INC 53387 3M COMPANY 80009 TEKTRONIX INC 81073 GRAYHILL INC TK0588 UNIVERSAL PRECISION PRODUCT TK1943 NEILSEN MANUFACTURING INC TK2338 ACC MATERIALS TK2469 UNITREK CORPORATION TK2597 MERIX CORP TK2647 INSTRUMENT SPECIALTIES CO INC 10 4 Address CUSTOMER SERVICE DEPT PO BOX 3608 PO BOX 737 403 NORTH MAIN 3000 LEWIS amp CLARK HWY PO BOX 66008 810 SE SHERMAN 5750 NE MOORE COURT 825 OLD TRAIL ROAD BERG ELECTRONICS RF COAXIAL DIV 21
13. 1 DSO Adjustments and dependencies Adjustment procedure Tests Prior completion requirements 1 Base Calibration EXTERNAL CAL None Adjustment INTERNAL CAL 2 Frequency Response BANDWIDTH CAL Base Calibration Adjustment TLA7E1 and TLA7E2 only 3 Pulse Trigger Adjustment GLITCH TRIG CAL Base Calibration PNP LATENCY CAL 4 Setup and Hold Adjustment SETUP HOLD Base Calibration Pulse Trigger Adjustment 5 Channel to Channel Skew CHAN SKEW CAL Base Calibration Adjustment 6 Probe Compensation PROBE COMP CAL None Adjustment 1 You must complete the EXTERNAL CAL test before running the INTERNAL CAL test You must complete the GLITCH TRIG CAL test before running the PNP LATENCY CAL test You must perform a full performance verification sequence following replace ment of any circuit board in the DSO module If the performance verification tests fail then perform the adjustment procedure Table 4 1 on page 4 3 lists the test equipment required to adjust the DSO module Item numbers under each test in these procedures correspond to the test equipment listed in the Table 4 1 TLA Series Digitizing Oscilloscope Modules Service Manual 5 3 Adjustment Procedures Adjustment Instructions 5 4 Using the PV Adjust Software This section describes how to perform adjustments using the performance verification and adjustment software The performance verification and adjustment software contains instructio
14. Adjustments Adjustment Sequences and Dependencies This section describes how to perform adjustments using the performance verification and adjustment software There are no manual adjustments for the DSO module The performance verification and adjustment software adjusts the instrument hardware using external test equipment connection you provide in response to prompts on the screen Upon successful completion of each adjustment the performance verification and adjustment software automatically loads the new calibration data into the DSO module memory The performance verification and adjustment software allows you to run groups of adjustments or sequences A sequence consists of one or more individual adjustments Normally you will perform a RUN FULL SEQUENCE which executes each adjustment in the proper order The performance verification and adjustment software also provides instructions for running each adjustment individually However you should only perform individual adjustments while troubleshooting the DSO module Some adjustments depend on successful prior completion of other adjustments For example all the tests associated with the Base Calibration must pass before any other adjustments can be successfully completed Table 5 1 lists the tests and dependencies for each adjustment TLA Series Digitizing Oscilloscope Modules Service Manual Adjustment Procedures Adjustment After Repair Test Equipment Table 5
15. DSO module SW test name TIMEBASE ACCURACY Equipment Sine wave generator item 14 required Precision BNC cable item 12 Type N to BNC adapter item 10 Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 7 Power up diagnostics pass INTERNAL CAL test passes DSO module CH1 O DE Precision BNC O O O cable Sine wave generator Type N to BNC adapter Figure 4 7 Initial setup for the timebase accuracy test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification DSO Procedure 8 This procedure checks the time accuracy for the pulse glitch or for the pulse Glitch Trigger Accuracy width triggering of the DSO module SW test name Equipment required Prerequisites GLITCH TRIG ACC No change from the previous test Timebase Accuracy Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 7 Power up diagnostics pa
16. 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 a EN i Table of Contents Specifications Operating Information Theory of Operation General Safety Summary cc cece cece reece resero v Service Safety Summary eeeeeeeeeeeee enhn vii Preface oco ede eo eae ENS aia aca te SM vh aate ix Manual Stricture eio DD Re eae ue a dua ix Manual Conventions iu iov ed aa AA e a p tette x Related Manuals ek a gis e pb reb dead dia eR a e ica x Introduction 1 0 ccc ccc cc ccc ce cee tec e cece e hh hh xiii Adjustment and Certification Interval 0 0 eee eee eee eee xiii Strategy for Servicing ii oos sei hehe I Ve ew ead eee wheats xiii Service Offerings s our eeLlouutem pene Sha edem em e rb weite xiv Contacting Tektronix ii uelle eese repe mra a e deret etes xv Product Description ide eene debere eb dps 1 1 Gharacteristies Tables 2 thee RR eere an ees dab ale 1 2 Installation 2er e Rund nce Ser atte sd ce dapi teer tars 2 1 Software Installation and Removal 2 4 Operating Information 2 6 Block Level Description 3 1 Performance Verification Adjustment Procedures Maintenance Summary Verification 000 een hn 4 1 Test Equipment RA 4 3 Functional Verification 4 4 DS
17. item 12 v SMAdo BNC adapter item 18 Sine wave generator item 14 SMA to BNC adapter item 18 BNC to BNC adapter item 4 Type N to BNC adapter item 16 Figure 4 5 Using a power meter to monitor the amplitude of the sine wave generator during the analog bandwidth test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for each channel on the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 TLA Series Digitizing Oscilloscope Modules Service Manual 4 17 Performance Verification DSO Procedure 5 This procedure checks the random noise specification of the DSO module Random Noise SW test name RANDOM NOISE Equipment No external test equipment required required Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Power up diagnostics pass INTERNAL CAL test passes 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 4 18 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification DSO Procedure 6
18. 100 pin ribbon cables TLA Series Digitizing Oscilloscope Modules Service Manual 3 3 Theory of Operation 3 4 TLA Series Digitizing Oscilloscope Modules Service Manual en JE E Performance Verification Summary Verification This chapter contains procedures for functional verification certification and performance verification procedures for the DSO modules Generally you should perform these procedures once per year or following repairs that affect certifica tion Functional verification procedures verify the basic functionality of the instru ment inputs outputs and basic instrument actions These procedures include power on diagnostics extended diagnostics and manual check procedures These procedures can be used for incoming inspection purposes Certification procedures certify the accuracy of an instrument and provide a traceability path to national standards Calibration data reports are produced for the DSO modules as output from the performance verification and adjustment software Performance verification procedures confirm that a product meets or exceeds the performance requirements for the published specifications documented in the Specifications chapter of this manual Refer to Figure 4 1 on page 4 2 fora graphic overview of the procedures Adjustment procedures check for and if necessary correct any adjustment errors discovered when performing functional or performance verification procedures The adjustment
19. 12 TLA Series Digitizing Oscilloscope Modules Service Manual 4 15 Performance Verification DSO Procedure 4 This procedure checks the analog bandwidth DC coupled specification of the Analog Bandwidth DSO module SW test name ANALOG BANDWIDTH Equipment Sine wave generator item 14 required Precision BNC cable item 12 Type N to BNC adapter item 10 Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 42 Power up diagnostics pass INTERNAL CAL test passes 1 The output frequency of the sine wave generator must maintain a constant output amplitude within 0 35 dB of the reference frequency 10 MHz through the bandwidth calibration frequency range 1005 MHz f you require a power meter to maintain a constant output amplitude use the equipment setup as shown in Figure 4 5 DSO module CH1 0 O O O Q Precision BNC cable Sine wave generator Type N to BNC adapter Figure 4 4 Initial setup for the analog bandwidth test 4 16 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification Power meter and Power sensor item 15 DSO module e Type N to BNC adapter item 16 SMA to BNC adapter item 18 l Power divider item 17 Precision BNC cable
20. 24981 80009 0KB05 0KB05 0KB05 0KB05 TK2597 TK2338 0J9P9 27264 52961 22526 TK2469 Mfr part number 322401 05 367 0484 00 335064600 ORDER BY DE SCRIPTION ORDER BY DE SCRIPTION OBD OBD 28JR306 1 28JR306 1 28JR306 1 367 0486 00 334919000 334919100 334919200 334919300 259 0101 XX 174 2031 00 348 1422 00 52207 1590 131 1003 00 75060 012 174 3458 00 TLA Series Digitizing Oscilloscope Modules Service Manual Replaceable Parts List Replaceable Parts List Cont Fig amp index Tektronix part Serialno Serial no Mfr number number effective discontd Qty Name amp description code Mfr part number 29 131 4619 00 2 CONN RIBBON PCB MALE RTANG 100 POS 0 050 CTR 0 307 53387 91100 1201BP MLG X 0 110 TAIL 4 X 25 STAGGERED PCB 2 30 348 1365 01 1 SHLD GSKT ELEC SYMETRICAL SLOTTED FINGER 0 350 W TK2647 0493 0069 01 X 7 5 LRIVIT MTG SNAP IN RIVIT SPACING 1 5 IN TLA Series Digitizing Oscilloscope Modules Service Manual 10 7 Replaceable Parts List Figure 10 1 Digitizing oscilloscope exploded view 10 8 TLA Series Digitizing Oscilloscope Modules Service Manual
21. Base calibration adjustment Frequency response adjustment Pulse trigger adjustment Setup and hold adjustment Channel to channel skew adjustment Probe compensation adjustment Tests EXTERNAL CAL INTERNAL CAL BANDWIDTH CAL GLITCH TRIG CAL PNP LATENCY CAL SETUP HOLD CHAN SKEW CAL PROBE COMP CAL Possible circuit board failure A2 Acquisition board A2 Acquisition board A2 Acquisition board A2 Acquisition board A2 Acquisition board A1 Processor board Each of the following adjustment procedures corresponds to one or more adjustment control programs in the performance verification and adjustment software Refer to the following procedures to identify the initial setup for each test Then follow the program instructions to complete the tests TLA Series Digitizing Oscilloscope Modules Service Manual 5 5 Adjustment Procedures DSO Procedure 1 This procedure performs an internal and external calibration on the DSO module Base Calibration The INTERNAL CAL test is the performance verification and adjustment software equivalent of SELF CAL SW test names EXTERNAL CAL INTERNAL CAL Equipment Voltage reference item 7 required Precision BNC cable item 12 Dual banana to BNC adapter item 6 Capacitor 0 1 uF item 8 Prerequisites Warm up time 30 minutes Test equipment connected as shown in Figure 5 1 Power up diagnostics pass No previous tests required 1 Install the 0 1 uF
22. MHz TLA7E1 2 5 GSample second 1 GHz TLA7D1 2 2 5 GSample second 500 MHz A maximum record length of 15 000 samples with 8 bit vertical resolution m A full complement of internal triggering modes such as edge pulse logic and setup hold TLA Series Digitizing Oscilloscope Modules Service Manual 1 1 Specifications Characteristics Tables This section lists the specifications for the DSO module All specifications are guaranteed unless noted typical Specifications that are marked with the symbol are checked in the Performance Verification chapter of this manual The performance limits in this specification are valid with these conditions m The DSO module must have successfully passed self calibration at an ambient temperature between 20 C and 30 C and after a warm up period of 30 or more minutes at these conditions m The DSO module must be in an environment with temperature altitude humidity and vibration within the operating limits described in these specifications This includes the warm up period of 30 or more minutes at these conditions Table 1 2 Signal acquisition system Characteristic Accuracy DC Gain Accuracy Internal Offset Description 1 5 for full scale ranges from 20 mV to 100 V 2 0 for full scale ranges lt 19 9 mV Full Scale Range Setting 10mV 1V 1 01 V 10V 10 1 V 100 V Offset Accuracy 0 2 x offset 1 5 mV 6 x full scale range
23. Stable Triggering AC Same as the DC coupled limits for frequencies above 60 Hz attenuates signals below 60 Hz High Frequency Reject One and one half times the DC coupled limits from DC to 30 kHz attenuates signals above 30 kHz Low Frequency Reject One and one half times the DC coupled limits for frequencies above 80 kHz attenuates signals below 80 kHz Noise Reject Three times the DC coupled limits 1 6 TLA Series Digitizing Oscilloscope Modules Service Manual Specifications Table 1 4 Trigger system Cont Characteristic Time Minimum Pulse or Rearm and Minimum Transition Time for Pulse Type Triggering typical Trigger Position Error Edge Triggering typical Table 1 5 Front Panel Connectors Characteristic Probe Compensator Output Voltage The Probe Compensator output voltage in peak to peak Volts Table 1 6 Environmental Characteristic Altitude Operating and Nonoperating Humidity Operating and Nonoperating Temperature Operating and Nonoperating Description For vertical settings 100 mV and x10 V at the BNC input Pulse Class Minimum Pulse Width Minimum Rearm Width Glitch 1ns 2 ns 5 of Glitch Width Setting Width 1 ns 2 ns 5 of Width Upper Limit Setting Acquisition Mode Trigger Position Error Sample 1 Sample Interval 1 ns Description 0 5 V base top 1 into a 50 2 load Description Operating to 15 000 feet 4570 m provided maximum
24. TLA Series Digitizing Oscilloscope Modules Service Manual iii Table of Contents List of Tables Figure 6 12 Primary troubleshooting procedure 6 30 Figure 6 13 Probe power voltage check eee 6 31 Figure 6 14 Power supply troubleshooting procedure 6 31 Figure 6 15 Fuse locations for troubleshooting 6 32 Figure 6 16 Probe interface resistance cece eee eeee 6 33 Figure 9 1 Interconnections cece eee e ere ee eees 9 1 Figure 9 2 Block diagram eee nnn 9 2 Figure 10 1 Digitizing oscilloscope exploded view 10 8 Table i Tektronix Logic Analyzer Family Documentation xi Table 1 1 Comparison of product features 1 1 Table 1 2 Signal acquisition system eee 1 2 Table 1 3 Timebase system ccc ccc c ccc c eee e eee eeeee 1 5 Table 1 4 Trigger system eee 1 6 Table 1 5 Front Panel Connectors eee 1 7 Table 1 6 Environmental cc ccc cece eee hh nnn 1 7 Table 1 7 Certifications and compliances eee 1 8 Table 1 8 Mechanical cece eee n nnn 1 8 Table 4 1 Test Equipment eeeeee Rn 4 3 Table 4 2 DSO PV Adjust software performance verification tests 4 8 Table 4 3 DSO module fault isolation eee 4 12 Table 5 1 DSO Adjustments and dependencies 5 3 Table 5 2 Fault isolation
25. X 0 312 PNH STL ZINC T 10 TORX DR SEMS GASKET EMI CLIP ON 1 98 L BE CU TIN PLATED W T LANCES CIRCUIT BD ASSY PROCESSOR 389 1898 00 WIRED FUSE SMD 1 5A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT F13 FUSE SMD 2 0A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT F1 F5 FUSE SMD 10 0A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT F4 F12 FUSE SMD 3 0A 125V FAST BLOW 0 1 X 0 1 X 0 24 UL REG CSA CERT T amp R F2 POST SPACER 0 250 HEX 1 508 L 4 40 INT THD X 0 5 L 6 32 EXT THD STEEL SWITCH ROTARY HEXADECIMAL 100MA AT 50VDC RIGHT ANGLE 0 430 W X 0 400 H X 0 202 L CONN HDR PCB MALE RTANG 1 X 2 0 1 CTR 0 318 MLG X 0 110 TAIL 30 GOLD 0 025 SQ CONN DIN PCB MALE RTANG 3 X 32 0 1CTR 0 209 MLG X 0 104 TAILO 437 H BD RETENTION HIGH TE CONN HDR SMD MALE STR 2 X 50 0 05 X 0 1 CTR 0 480 H SHRD 4 SIDES CTR PLZ LATCHING W BD R CIRCUIT BD ASSY ACQUISITION 1GHZ 5GS SEC 4CH TLA7E2 FUSE SMD 1 5A 125V FAST CIRCUIT BD ASSY ACQUISITION 1GHZ 5GS SEC 2CH TLA7E1 FUSE SMD 1 5A 125V FAST CIRCUIT BD ASSY ACQUISITION 500MHZ 2 5GS SEC 4CH TLA7D2 FUSE SMD 1 5A 125V FAST CIRCUIT BD ASSY ACQUISITION 500MHZ 2 5GS SEC 2CH TLA7D1 FUSE SMD 1 5A 125V FAST TWO WIDE BACK PANEL CHASSIS ASSY TWO WIDE BOTTOM CHASSIS METAL 4 CH TLA7D2 E2 CHASSIS ASSY TWO WIDE BOTTOM CHASSIS METAL2 CH TLA7D1 E1 SPRING CONICAL TLA Series Digitizing Oscilloscope Modules Service Manual Mfr code 80009 0KB01 TK2
26. as shown in Figure 6 8 Then install the probe interface into socket J1163 on the Acquisition Board 3 Lock J1163 slide the lock tabs toward the attenuator housing 4 If necessary turn the front panel face down and insert the plastic rings into holes in the front panel The plastic rings may already be installed if they stayed in the front panel during Acquisition Board removal 5 Turn the front panel face down and carefully slide the Acquisition Board into the front panel until the BNC connectors clear the front subpanel Then lay the module onto the chassis Be sure the attenuator housing is flush with the back side of the front panel 6 Using a screwdriver with a T 15 Torx tip install three 3 screws that secure the Acquisition Board to the front panel 7 Using a 1 4 inch nut driver install six 6 spacer posts that secure the Acquisition Board to the chassis 8 Perform the Processor Board installation procedure see page 6 14 TLA Series Digitizing Oscilloscope Modules Service Manual 6 21 Removal and Installation Procedures Acquisition Board You will need a screwdriver with size T 10 and T 15 Torx tips and a 1 4 inch nut driver Table 6 3 items 1 2 3 and 5 to replace the Acquisition Board Removal Use the following procedure and Figure 6 9 to remove the Acquisition Board NOTE After replacing the Acquisition Board you must verify operation and perform the adjustment and Performance Verification pro
27. capacitor across the voltage reference output terminals to reduce noise DSO module CH 1 Precision BNC cable Voltage reference 0 1 uF Capacitor Dual banana to BNC adapter Figure 5 1 Initial setup for the base calibration adjustment 5 6 TLA Series Digitizing Oscilloscope Modules Service Manual Adjustment Procedures 1 If the logic analyzer application is running quit the application 2 Load the performance verification and adjustment software as described in the Software Installation and Removal on page 2 4 3 Verify that all of the prerequisites listed previously are met for the procedure 4 Run the performance verification and adjustment software as described in Using the Software on page 4 9 Select TLA dig then select the correct module type and the ADJ test option 5 Follow the on screen instructions to run the EXTERNAL CAL test for the DSO module 6 Verify that the EXTERNAL CAL test passes before disconnecting the test equipment and performing the INTERNAL CAL test 7 Verify that these tests pass before continuing with any other tests TLA Series Digitizing Oscilloscope Modules Service Manual 9 7 Adjustment Procedures DSO Procedure 2 This procedure adjusts the frequency response of the TLA7E1 and the TLA7E2 Frequency Response DSO modules Adjustment SW test names BANDWIDTH_CAL Equipment Sine wave generator item 14 required Precision BNC cable
28. cleaners Inspection Interior Remove the module cover to access the inside of the DSO module for inspection and cleaning Inspect the internal portions of the DSO module for damage and wear using Table 6 2 as a guide Defects found should be repaired immediately TLA Series Digitizing Oscilloscope Modules Service Manual Maintenance Table 6 2 Internal inspection check list Item Circuit boards Resistors or semi conductors Solder connections Capacitors Wiring and cables Chassis Inspect for Loose broken or corroded solder connections Burned circuit boards Burned broken or cracked circuit run plating Burned cracked broken blistered condition Cold solder or rosin joints Damaged or leaking cases Corroded solder on leads or terminals Loose plugs or connectors Burned broken or frayed wiring Dents deformations and damaged hardware Repair action Remove failed board and replace with a new part Remove failed board and replace with a new part Resolder joint and clean with isopropyl alcohol Remove failed board and replace with a new part Firmly seat connectors Repair or replace parts with defective wires or cables Straighten repair or replace defective hardware CAUTION To prevent damage from electrical arcing ensure that circuit boards and components are dry before applying power to the DSO module Cleaning Procedure Interior To clea
29. ey O 3 N O 3 N 77 A2 Acquisition Attenuators A1 Processor Acquisition system DSP Bus to DSP processor system J101 10 MHz VCO M F P2 Interconnect 100 DSP Bus 68330 Main to acquisition system processor system 320C31 DSP Inter processor system MANAGE M F Interconnect Power supplies M F Interconnect Figure 9 2 Block diagram 9 2 TLA Series Digitizing Oscilloscope Modules Service Manual rr IE Replaceable Parts List This chapter contains a list of the replaceable modules for the DSO Module Use this list to identify and order replacement parts Standard Accessories The oscilloscope comes standard with the accessories listed in Table 10 1 Table 10 1 Standard accessories Accessory Part number Probes TLA 7D1 Two P6243 1GHz Active FET probes P6243 TLA 7D2 Four P6243 1GHz Active FET probes P6243 TLA 7E1 Two P6245 1GHz Active FET probes P6245 TLA 7E2 Four P6245 1GHz Active FET probes P6245 DSO Probe Calibration Adapter 671 3930 XX Male to Male BNC Connector 103 0029 XX Certificate of Traceable Calibration TLA 7D1 or 7D2 or 7E1 or 7E2 Shipping List Tektronix Logic Analyzer Family User Manual 071 0863 00 Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix products are sometimes made to accommodate improved component
30. is loaded Test equipment connected as shown in Figure 4 10 Power up diagnostics pass INTERNAL CAL test passes Probe compensation DSO module Ca Mus LY Digital multimeter Precision BNC gt cable o le O Dual banana to BNC adapter Figure 4 10 Initial setup for the probe compensation test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 4 24 TLA Series Digitizing Oscilloscope Modules Service Manual lu 7 NN Adjustment Procedures This section contains information needed to adjust the DSO module Adjust ments are performed using the performance verification and adjustment software The performance verification and adjustment software contains instructions and control programs for adjusting the DSO module The software describes test equipment connections and settings selects DSO module setup parameters and loads calibration constants into the DSO module memory These procedures adjust the DSO module for conformance with the warranted characteristics listed in the Specifications chapter of this manual These adjustments should be done whenever the DSO module fails the perfor mance verification procedure Prerequisites These procedures ask for the seria
31. item 12 Type N to BNC adapter item 16 Prerequisites Warm up time 30 minutes The logic analyzer application is not running Test equipment connected as shown in Figure 5 22 Power up diagnostics pass Base Calibration completed 1 The output frequency of the sine wave generator must maintain a constant output amplitude within 0 35 dB of the reference frequency 10 MHz through the bandwidth calibration frequency range 1005 MHz 2 f you require a power meter to maintain a constant output amplitude use the equipment setup as shown in Figure 5 3 DSO module CH1 O O Precision O O O BNC cable Sine wave generator Type N to BNC adapter Figure 5 2 Initial setup for the frequency response adjustment 5 8 TLA Series Digitizing Oscilloscope Modules Service Manual Adjustment Procedures Power meter and Power sensor item 15 DSO module lr Type N to BNC adapter item 16 SMA to BNC adapter item 18 l lt Power divider item 17 Precision BNC cable v SMA to BNC adapter item 18 Sine wave generator item 14 SMA to BNC adapter item 18 BNC to BNC adapter item 4 Type N to BNC adapter item 16 Figure 5 3 Using a power meter to monitor the amplitude of the sine wave generator during the frequency response adjustment 1 Verify that all of the prerequisites liste
32. procedures are controlled by software Some of the adjustment procedures require user intervention to move probes or change test equipment settings The performance verification and adjustment software is provided on the product CD ROM If you have not already done so refer to Software Installation and Removal beginning on page 2 4 for instructions on installing the performance verification and adjustment software TLA Series Digitizing Oscilloscope Modules Service Manual 4 1 Performance Verification Determine equipment to certify Go to appropriate procedure s Gather required test equipment Is it OK Use with customer to Tektronix supplied remove reconnect probes probes from System Under Test gt lt Select procedure Configure customer s mainframe and modules as described in procedure Set up test equipment Allow all mainframes modules and equipment to warm up 30 minutes Load PV Adjust software Perform procedure using software Do tests pass Yes Print Calibration Data Report Create necessary Calibration Certificate Are all certifications complete Figure 4 1 Calibration certification procedure flow chart 4 2 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification Test Equipment These procedures use external traceable signal sources to directly test characte
33. the DSO module when performing the procedures in this manual Connectors and Indicators Figure 2 3 shows the connectors and indicators on the front panel of a four chan nel digitizing oscilloscope The two channel model looks and operates the same but without the CH 3 and CH 4 inputs Descriptions of each connector and indicator follow the illustration Tektronix Q 4 CHANNEL DSO MODULE Figure 2 3 Digitizing oscilloscope front panel 2 6 TLA Series Digitizing Oscilloscope Modules Service Manual Operating Information CH 1 CH 2 CH 3 and CH 4 Channel Inputs These BNC input connectors drive the vertical channel amplifiers and their dedicated digitizers The TLA7D2 and TLATE2 have four input channels as shown in Figure 2 3 The TLA7D1 and TLATEI have the top two channels The channel inputs may be set for 1 MQ or 50 Q input impedance Coupling selections are DC AC and Ground The Ground setting grounds the internal amplifier but presents a high impedance to the signal READY Indicator The green LED lights continuously after the digitizing oscilloscope completes power on During normal operation READY blinks when an error occurs that generates a message ACCESSED Indicator The yellow LED blinks on and then off under the following conditions m Each time communication with the digitizing oscilloscope occurs
34. the shipping carton in two prominent locations The DSO module should be stored in a clean dry environment The following environmental characteristics apply for both shipping and storage m Temperature range 40 F to 159 8 F 40 C to 71 C m Altitude To 40 000 feet 12 190 meters TLA Series Digitizing Oscilloscope Modules Service Manual 6 35 Repackaging Instructions 6 36 TLA Series Digitizing Oscilloscope Modules Service Manual Options This chapter lists the advertised options for each DSO module Refer to the Replaceable Mechanical Parts chapter for a list of standard and optional accessories for each module Tektronix Service Options Tektronix offers the following service options These options are modular flexible and easy to order with your instrument Designed to ease installation and start up to support tracking of calibration to requirements of ISO9000 and to provide for extended repair coverage these options help fix your long term maintenance costs and eliminate unplanned expenditures Product installation service Option IN Provides initial installation of the product and familiarizes new users with some of its operation features Three years of calibration Option C3 Provides initial Certification on delivery plus services two more annual calibrations from your service center Test data Option D3 Provides test data on delivery and when annual calibration services are provided three total re
35. 00 EARLYWOOD DR PO BOX 547 2222 WELLINGTON CT 86365 COLLEGE VIEW RD ELECTRONICS PRODUCTS DIV 3M AUSTIN CENTER 14150 SW KARL BRAUN DR PO BOX 500 561 HILLGROVE AVE PO BOX 10373 1775 NW CORNELIUS PASS RD 3501 PORTLAND RD NE ED SNYDER BLDG 38 302 3000 LEWIS amp CLARK HWY SUITE 2 1521 POPLAR LANE C O TEMCO NW 1336 SE 51ST STREET TLA Series Digitizing Oscilloscope Modules Service Manual City State Zip Code HARRISBURG PA 17105 3608 NEWBERG OR 97132 VANCOUVER WA 98666 6008 PORTLAND OR 97214 4657 HILLSBORO OR 97124 6474 ETTERS PA 17319 FRANKLIN IN 46131 LISLE IL 60532 EUGENE OR 97405 AUSTIN TX 78769 2963 BEAVERTON OR 97077 0001 LAGRANGE IL 60525 HILLSBORO OR 97124 SALEM OR 97303 BEAVERTON OR 97077 VANCOUVER WA 98661 FOREST GROVE OR 97116 HILLSBORO OR 97123 Replaceable Parts List Replaceable Parts List Fig amp index Tektronix part number number 10 1 1 200 4321 00 2 211 0409 00 3 348 1537 00 4 671 3233 01 159 5009 00 159 5014 00 159 5015 00 159 5018 00 5 129 1474 00 6 260 2597 00 7 131 3766 00 8 131 3692 00 9 131 5980 00 10 671 3843 XX 159 5009 00 10 671 3844 XX 159 5009 00 10 671 3845 XX 159 5009 00 10 671 3846 XX 159 5009 00 11 386 6868 00 12 441 2096 00 12 441 2097 00 13 214 4762 00 Serial no effective Serial no discont d Qty Name amp description 1 18 COVER COVER TWO WIDE 0 063 ALUM SCR ASSEM WSHR 4 40
36. 647 80009 80009 80009 80009 80009 TK0588 81073 00779 00779 00779 80009 80009 80009 80009 80009 80009 80009 80009 TK1943 80009 80009 8X345 Mfr part number 200 4321 00 211 0409 00 97 563 17 W 2 T LANCES 671 3233 01 159 5009 00 5 159 5014 00 159 5015 00 159 5018 00 129 1474 00 94HAB16RA 87232 2 536416 5 1 104549 0 671 3843 XX 159 5009 00 671 3844 XX 159 5009 00 671 3845 XX 159 5009 00 671 3846 XX 159 5009 00 386 6868 00 441 2096 00 441 2097 00 ORDER BY DESCR 10 5 Replaceable Parts List Replaceable Parts List Cont Fig amp index number 14 15 16 17 18 19 19 10 6 Tektronix part number 211 0911 00 367 0484 00 335 0646 00 211 0721 00 354 0654 01 334 9233 00 334 9234 00 131 1315 01 131 1315 01 131 1315 01 367 0486 00 334 9190 00 334 9191 00 334 9192 00 334 9193 00 259 0101 XX 174 2031 00 348 1422 00 131 5658 00 131 1003 00 136 0252 07 174 3458 00 Serial no effective Serial no discont d Qty Name amp description 4 RETAINER SCREW MACHINE M2 5 PITCH 0 45MM LENGTH 11MM HEAD DIA 5MM HEAD HEIGHT 2MM HANDLE EJECTOR INJECTOR EJECTOR ASSEMBLY TWO WIDE W OUT KEYING SPRING LOADED PLASTIC 20 GL MARKER INDENT EJECTOR LABEL BOTTOM SCREW MACHINE 6 32 X 0 375 PNH STL CDPL T 15 TORX DR RING CONN BNC TLA7D2 and TLA7E2 use 4 TLA7D1 and TLA7E1 use 2 MARKER IDENT CONFIGU
37. 7 Removal and Installation Procedures 6 18 Installation N Processor board Circuit number Circuit board Purpose F1 Processor Board 12V F2 Processor Board 5 VD F4 Processor Board 5 2 V F5 Processor Board 12 V F12 Processor Board 5V F13 Processor Board Probe Compensation Output Figure 6 7 Fuse replacement Use the following procedure and Figure 6 7 to install the fuses CAUTION To avoid damage to the DSO module use only replacement fuses that match the type voltage and current rating of the original fuse See the Mechanical Parts List section for the part number of replacement fuses 1 Using a soldering iron solder the new fuse into place 2 Perform the Processor Board installation procedure see page 6 14 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Probe Interface You will need a screwdriver with size T 10 and T 15 Torx tips and a 1 4 inch nut driver Table 6 3 items 1 2 3 and 5 to replace the probe interface Removal Use the following procedure and Figure 6 8 to remove the probe interface 1 2 3 Perform the Cover removal procedure see page 6 10 Perform the Processor Board removal procedure see page 6 13 Using a 1 4 inch nut driver remove six 6 spacer posts that secure the Acquisition Board to the chassis Using a screwdriver with a T 15 Torx tip remove three 3 screws that
38. 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 AN m WARNING Protective Ground CAUTION Double High Voltage Earth Terminal Refer to Manual Insulated TLA Series Digitizing Oscilloscope Modules Service Manual E Service Safety Summary Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do Not Service Alone Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock disconnect the main power by means of the power cord or if provided the power switch Use Care When Servicing With Power On Dangerous voltages or currents may exist in this product Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed connections T
39. LA Series Digitizing Oscilloscope Modules Service Manual vii Service Safety Summary viii TLA Series Digitizing Oscilloscope Modules Service Manual Preface This is the service manual for the Tektronix Logic Analyzer Series Digitizing Oscilloscope Modules TLA7D1 TLA7D2 TLA7E1 amp TLA7E2 Read this preface to learn how this manual is structured what conventions it uses and where you can find other information related to servicing this product Read the Introduction which follows this preface for safety and other important background information needed before using this manual for servicing this product Manual Structure The TLA Series Digitizing Oscilloscope Manual is divided into chapters which are made up of related subordinate topics These topics can be cross referenced as sections Be sure to read the introductions to all procedures These introductions provide important information needed to do the service correctly safely and efficiently A brief description of each chapter follows Specifications contains a product description of the DSO Module and tables of the characteristics and descriptions that apply to it Operating Information includes basic installation and operating instructions at the level needed to safely operate and service the DSO Module For complete installation and configuration procedures refer to the Tektronix Logic Analyzer Family User Manual Theory of Operation contains circuit descript
40. O Module Certification 4 7 Performance Verification Instructions 00 eee eee eee eee ee 4 7 Performance Verification Tests 4 13 Prerequisites 2o xen EC Dead sake pira pae pai 5 1 Usine the SOItwate sneis ito Fnac Ian Ee ER REA RERUM ac 5 2 Test Equipments 253 doo Fe ESRB ER MARIA RR 5 3 Adjustment Instructions 5 4 Adjustment Procedures 0 cece cece ee tee een ences 5 5 Completing the Adjustment Steps LL 5 14 Related Maintenance Procedures 0 0 cece eee eee een eee 6 1 TLA Series Digitizing Oscilloscope Modules Service Manual i Table of Contents Preventing ESD risaie DID e ee dide es ed 6 1 Battery Disposal i e wes S eun OPEP PE Sen DER 6 2 Inspection and Cleaning opsetsin ote EEPE KE eh 6 2 Removal and Installation Procedures eee 6 7 Summary of Procedures 0 0 eee eee earner 6 7 Tools REQUITED sierra 6 8 Injector Ejector Handles 0 0 0 cee ee eee en 6 8 COVER Le d err Re ae ese reete aei e re amd 6 10 Processor Board see te i 6 13 Probe Compensation BNC Connector 0 0 0 6 16 lun mu tide epee teed ode Le eee a GS pria 6 17 Probe Interface iile tete DR e Dea Re Rx 6 19 Acquisition Board tee Rete a Ret e 6 22 Rear EMI Gaskets br rhe RUE eee 6 23 Troubleshooting eeeeeeeeeee rnnt nn 6 25 Check for Common Problems 6 26 Eliminate Other Problem Sources 0 00 cee cece eee eee eee 6 26 Troubleshoot the DSO Module
41. Oscilloscope Modules Service Manual 6 29 Troubleshooting NOTE Before replacing circuit boards be sure to inspect all associated cables and connectors for damage and proper installation 6 If necessary replace the faulty circuit board This procedure assumes that the DSO module is installed into a properly configured mainframe During Perform the power on do Power Supply LEDs light as Troubleshooting expected Procedure page 6 31 Yes Measure probe power at front panel Figure 6 13 Is Perform the voltage Power Supply OK Troubleshooting Procedure page 6 31 Run the extended diagnostics Use Table 6 6 on page 6 33 Diagnostics to identify failed board and Pass replace it Perform the PV procedure Did the PV Replace the Acquisition procedure Board A2 pass Yes DSO module is OK Figure 6 12 Primary troubleshooting procedure 6 30 TLA Series Digitizing Oscilloscope Modules Service Manual Troubleshooting 45V ES Power supply Limits H5V 5V 44 85 V to 45 25 V 15V 414 55 V to 415 30 V 15V 45V 14 55 V to 15 30 V 5V 5V 4 85 V to 5 25 V Figure 6 13 Probe power voltage check With power off remove the oscilloscope top cover With power still off check for open fuses See Figure 6 15 Replace the circuit board s shown in Table 6 5 on page 6 5 Did you find an open fuse Fuse s j
42. RATION LABEL 500MHZ 0 010 LEXAN W 0 002 ADHESIVE EMBOSSED TLA7D1 TLA7D2 MARKER IDENT CONFIGURATION LABEL 1GHZ 0 010 LEXAN TLA7E1 TLA7E2 CONN RF JACK BNC PNL 50 OHM FEMALE STR PELTOLA REAR PNL SILVER BRIGHT ALLOY 0 576 MLG X 0 36 CONN RF JACK BNC PNL 50 OHM FEMALE STR PELTOLA REAR PNL SILVER BRIGHT ALLOY 0 576 MLG X 0 36 CONN RF JACK BNC PNL 50 OHM FEMALE STR PELTOLA REAR PNL SILVER BRIGHT ALLOY 0 576 MLG X 0 36 HANDLE EJECTOR INJECTOR EJECTOR ASSEMBLY TWO WIDE WITHOUT KEYING TOP SPRING LOADED 20 MARKER INDENT EJECTOR LABEL TOP ACH 1GHZ 0 745 X 0 520 TLA7E2 MARKER INDENT EJECTOR LABEL TOP 4CH 500MHZ 0 745 X 0 520 TLA7D2 MARKER INDENT EJECTOR LABEL TOP 2 CH 1 GHZ 0 745 X 0 520 TLA7E1 MARKER INDENT EJECTOR LABEL TOP 2 CH 500MHZ TLA7D1 FLEX CIRCUIT TEK PROBE INTERFACE CABLE ASSY COAX RFP 50 OHM 6 5L PELTOLA BOTH ENDS 210 0775 00 amp 210 0800 00 GASKET RF SHIELDING 0 005 BERYLLIUM COPPER ALLOY C17200 1 2 HARD 0 0003 MIN BRIGHT NICKEL CONN BOX PCB FFC ZIF FEMALE RTANG 1 X 15 0 039 CTR 1MM 0 197 H X 0 126 TAIL TIN ACCOM 0 CONN RCPT ELEC PCB PELTOLA FEMALE STR 0 277 H X 0 094 TAIL 3 POS IN PCB SHIELD USE WITH 136 02 SOCKET PIN CONN SINGLE PCB T G 0 030 H 0 054 DIA PTH 0 012 0 22 PIN SIZE W O DIMPLE 25000 REEL CA ASSY SP RIBBON IDC 30AWG 0 025 CTR 3 325 L 100 POS MINI RIBBON 0 05 CTR X 2 X 50 0 05 X Mfr code 18677 80009 0KB05 0KB01 0JR05 0KB05 0KB05 24981 24981
43. Service Manual Tektronix TLA Series Digitizing Oscilloscope Modules TLA7D1 TLA7D2 TLA7E1 amp TLA7E2 070 9780 03 This document applies to firmware version 1 00 and above Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all safety summaries prior to performing service www tektronix com Copyright Tektronix Inc All rights reserved 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 Inc 14200 SW Karl Braun Drive Beaverton OR 97077 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If a 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 defective product 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 sh
44. Tektronix Logic Analyzer Family User Manual By running a full sequence you will verify the performance of the DSO module Table 4 2 DSO PV Adjust software performance verification tests Test name Specification tested 1 INTERNAL CAL Runs the internal self cal 2 DC GAIN ACCURACY Accuracy DC gain 3 OFFSET ACCURACY Accuracy offset 4 ANALOG BANDWIDTH Analog bandwidth DC coupled 50 2 5 RANDOM NOISE Random noise TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification Table 4 2 DSO PV Adjust software performance verification tests Cont Test name Specification tested 6 DELAY BETWEEN CHAN Delay between channels full bandwidth 7 TIMEBASE ACCURACY Accuracy long term sample rate and delay time 8 GLITCH TRIG ACC Accuracy time for pulse glitch or pulse width triggering 9 TRIG MAIN ACC Accuracy DC for internal and external trigger level DC coupled 10 TRIG MAIN SENS Sensitivity edge type trigger DC coupled 11 PROBE COMPENSATION Probe compensation output voltage 1 Certifiable parameter The procedures in this document assume that you will run a full sequence of tests Each test includes a simple illustration of the test equipment setups and a table summarizing the parameters being verified You must perform a full performance verification sequence on the DSO module when replacing any circuit board in the module If the performance verification test
45. able 4 3 DSO module fault isolation Test name Possible circuit board failure 1 INTERNAL CAL A2 Acquisition board 2 DC GAIN ACCURACY A2 Acquisition board 3 OFFSET ACCURACY A2 Acquisition board 4 ANALOG BANDWIDTH A2 Acquisition board 5 RANDOM NOISE A2 Acquisition board 6 DELAY BETWEEN CHAN A2 Acquisition board 7 TIMEBASE ACCURACY A2 Acquisition board Mainframe 8 GLITCH TRIG ACC A2 Acquisition board 9 TRIG MAIN ACC A2 Acquisition board 10 TRIG MAIN SENS A2 Acquisition board 11 PROBE COMPENSATION A1 Processor board TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification Performance Verification Tests This section describes the individual tests and the test equipment connections All tests contain a brief table listing the following information m Software test name W A brief list of test equipment A list of prerequisites for each test Most of the tests include a simple test equipment connection diagram unless there are no changes from the previous test DSO Procedure 1 This procedure checks the internal self calibration of the DSO module The Internal Calibration INTERNAL CAL test is the performance verification and adjustment software equivalent of SELF CAL SW test name Equipment required Prerequisites 285 E ee SE e INTERNAL CAL None required Warm up time 30 minutes All probes disconnected Power up diagnostic
46. age to the module during the installation process N reinstall the cover exactly as described in steps 3 through 5 If the cover is not properly seated the module can be damaged when you install it in a mainframe or it will not meet EMC requirements 3 Push forward on the cover so the tab on the front edge of the cover inserts into the rear of the front subpanel Make sure that the cover is fully seated no gaps against the front and rear chassis flanges see Figure 6 3 4 While holding the module cover in place install the four 4 screws nearest the front of the module to secure the cover to the chassis 5 Install four 4 screws that secure the rear panel to the chassis TLA Series Digitizing Oscilloscope Modules Service Manual 6 11 Removal and Installation Procedures Make sure tab inserts into slot on rear of front panel Leave no vertical gap Figure 6 3 Seating the cover on the chassis 6 12 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Processor Board You will need a screwdriver with a size T 10 Torx tip Table 6 3 items 1 and 2 to replace the Processor Board Removal Use the following procedure and Figure 6 4 to remove the Processor Board NOTE After replacing the Processor Board you must verify operation and you must perform the adjustment and Performance Verification procedures as described in the TLA 700 Series Performance Verification an
47. ainframe and the TLA7XM Expansion Mainframes Provides service information for the DSO modules Provides service information for the pattern generator modules Provides service information for the TLA600 Series Logic Analyzers Service use Installation and removal of LA DSO and pattern generator modules as well as the mainframes Reinstallation of the system and application software Isolating and correcting failures in the portable mainframe and expansion mainframes Isolating and correcting failures in the mainframes Isolating and correcting failures in the DSO module Performing periodic or after repair function al or performance verifications calibrations and certifications for the DSO modules Performing periodic or after repair adjust ments for the DSO modules Isolating and correcting failures in the pattern generator module Performing periodic or after repair function al or performance verifications calibrations and certifications for the pattern generator modules Isolating and correcting failures in the TLA600 Logic Analyzer Performing periodic or after repair function al or performance verifications calibrations and certifications for the TLA600 Logic Analyzer Performing periodic or after repair adjust ments for the TLA600 Logic Analyzer TLA Series Digitizing Oscilloscope Modules Service Manual xi Preface xii TLA Series Digitizing Oscilloscope Modules Servi
48. al Maintenance Preventive maintenance consists of visually inspecting and cleaning the DSO module and using general care when operating it How often to do maintenance depends on the severity of the environment in which the DSO module is used A proper time to perform preventive maintenance is just before adjustment of the DSO module General Care The side cover keeps dust out of the DSO module and should be in place during normal operation Inspection and Cleaning Inspect and clean the DSO module as often as operating conditions require The Procedures collection of dirt on internal components can cause them to overheat and breakdown Dirt acts as an insulating blanket preventing efficient heat dissipa tion Dirt also provides an electrical conduction path that could cause a DSO module failure especially under high humidity conditions CAUTION Avoid the use of chemical cleaning agents that might damage the plastics and external labels used in the DSO module Use a cloth dampened with water to clean external surfaces To clean internal surfaces use a 7596 isopropyl alcohol solution as a cleaner and rinse with deionized water Before using any other type of cleaner consult your Tektronix Service Center or representative Inspection Exterior Inspect the outside of the DSO module for damage wear and missing parts Use Table 6 1 as a guide Instruments that appear to have been dropped or otherwise abused should be chec
49. all 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 products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX 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
50. ambient temperature is derated by 1 C 1000 ft above 1000 ft Nonoperating to 40 000 feet 12 190 m To 95 relative humidity at or below 30 C to 45 relative humidity up to 50 C Operating 0 C to 50 C ambient air when operated in a mainframe that provides at least 14 CFM of air flow resulting in no more than 12 C temperature rise of the air passing through this instrument Nonoperating 40 C to 71 C The trigger position errors are typically less than the values given here These values are for triggering signals having a slew rate at the trigger point of 5 of full scale ns TLA Series Digitizing Oscilloscope Modules Service Manual 1 7 Specifications Table 1 7 Certifications and compliances Characteristic Description Certifications EC Declaration of Conformity FCC Compliance Pollution Degree Table 1 8 Mechanical Characteristic Construction Material CAN CSA C22 2 No 1010 1 Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use UL3111 1 Standard for Electrical Measuring and Test Equipment EC Council Directive 89 336 EEC Emissions shall be within the limits specified by the following requirements Enclosure EN55011 Class A limits for radiated emissions AC Mains EN 60555 2 for power line harmonics EN 55011 Class A limits for conducted emissions Complies with the requirements of FCC CFR 47 Part 15 Subpart B Class A for radiate
51. and T 15 Torx screwdriver bits Table 6 3 lists the tools needed to replace modules in the DSO module Table 6 3 Tools required for parts replacement Item number Name Screwdriver handle T 10 Torx tip T 15 Torx tip One quarter 1 4 inch nut driver Soldering iron Solder wick e 1 o oOc1 co5 ro Description Accepts Torx driver bits Torx driver bit for T 10 size screw heads Torx driver bit for T 15 size screw heads One half inch 1 2 nut driver Standard tool Standard tool Standard tool Standard tool Three sixteenth 3 16 inch nut Standard tool driver Injector Ejector Handles You will need a screwdriver with a size T 10 Torx tip Table 6 3 items 1 and 2 to replace the ejector handles Removal Use the following procedure and Figure 6 1 to remove the injector ejector handles 1 Place the DSO module on its right side 2 Remove the two screws that secure the injector ejector handle to the chassis 3 Remove the injector ejector handle from the DSO module 6 8 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Remove screws 4 ES gai Ejector handle 2 Figure 6 1 Injector ejector handle replacement Installation Use the following procedure and Figure 6 1 to install the ejector handles NOTE The top and bottom injector ejector handles are not interchangeable The top injector ej
52. anual does not support component level fault isolation and replacement TLA Series Digitizing Oscilloscope Modules Service Manual xiii Introduction Service Offerings Warranty Repair Service xiv Calibration and Repair Service Tektronix provides service to cover repair under warranty as well as other services that are designed to meet your specific service needs Whether providing warranty repair service or any of the other services listed below Tektronix service technicians are well equipped to service the DSO Module Tektronix technicians train on Tektronix products they have access to the latest information on improvements to the DSO Module as well as the latest new product upgrades Services are provided at Tektronix Services Centers and on site at your facility depending on your location Tektronix warrants this product for one year from date of purchase The warranty appears behind the title page in this manual Tektronix technicians provide warranty service at most Tektronix service locations worldwide The Tektronix product catalog lists all service locations worldwide or you can visit us on our Customer Services World Center web site at http www tek com Mea surement Service See our latest service offerings and contact us by email In addition to warranty repair Tektronix Service offers calibration and other services which provide cost effective solutions to your service needs and quality standards compliance req
53. ards in areas that have a floor or work surface covering capable of generating a static charge WARNING 7o avoid personal injury observe the proper procedures for handling lithium batteries Improper handling can cause fire explosion or severe burns Do not recharge crush disassemble heat above 100 C 212 F incinerate or expose the battery to water The DSO module contains one lithium battery A1U70 located on the Processor Board A1 Battery replacement is accomplished by installing a new Processor Board A1 Read the following information before replacing the battery See Processor Board on page 6 13 for replacement instructions Dispose of lithium batteries according to local state and federal regulations In the United States you can typically dispose of small quantities less than 20 of batteries with ordinary garbage in a sanitary landfill You must send larger quantities by surface transport to a hazardous waste disposal facility Package the batteries individually to prevent shorting Then pack them in a sturdy container that is clearly labelled Lithium Batteries DO NOT OPEN Inspection and Cleaning 6 2 This section describes how to inspect for dirt and damage and how to clean the DSO module Inspection and cleaning are done as preventive maintenance Preventive maintenance when done regularly may prevent malfunctions and enhance reliability TLA Series Digitizing Oscilloscope Modules Service Manu
54. ce Diagnostic Tests Table Table 6 6 can help you isolate problems to one of the two circuit boards in the module use the Removal and Installation Procedures beginning on page 6 7 to replace the faulty circuit board NOTE If there are a majority of Acquisition items failing or the system can t find a unit the problem may be a Processor Board or a ribbon card failure Table 6 6 Diagnostic tests Group amp test Most likely cause Power on Extended Kernel Power On Kernel MPU Vai Vai MPU Static RAM MPU Val Nonvolatile RAM MPU Vai DSP Shared RAM MPU Val VXI Shared RAM MPU Val Calibration Checksums MPU ACQ Val Val Factory Calibration Status Recalibrate with Vai Vai CATS ACQ TLA Series Digitizing Oscilloscope Modules Service Manual 6 33 Troubleshooting Table 6 6 Diagnostic tests Cont Group amp test Mostlikely cause Poweron Extended Acquisition Timebase Control Register ACQ Vai Vasi Acquisition RAM Data Line ACQ Vai Val Acquisition RAM Pattern ACQ Vasi Acquisition RAM Address Line ACQ Vai Timebase Control Formatter ACQ a Vasi Low Speed Trigger Register ACQ Vai Vai High Speed Trigger Register ACQ Vai Vasi Phase Lock Loop ACQ Vai Vasi Timebase Control Functional ACQ Vasi Timebase Trigger Counter ACQ Vai Vai Sampler heater ACQ Vai Vasi VXI Trigger Control Register ACQ Vai Vasi VXI Trigger Control Functional ACQ Vasi VXI Trigger Control Arm ACQ Vai Vai VXI Time Co
55. ce Manual Introduction This manual contains information needed to properly service the DSO Module as well as general information critical to safe and effective servicing To prevent personal injury or damage to the digitizing oscilloscope module consider the following requirements before attempting service m The procedures in this manual should be performed only by a qualified service person m Read the General Safety Summary and Service Safety Summary found at the beginning of this manual When using this manual for servicing be sure to follow all warnings cautions and notes Adjustment and Certification Interval Strategy for Servicing Generally you should perform the adjustments and certification calibration once per year or following repairs that affect adjustment or calibration This manual supports and contains information needed for periodic maintenance of the DSO Module Examples of such information are procedures for fault isolation of a failed circuit board or assembly and for removal and replacement of same This manual also supports and contains information for corrective maintenance of this product m Supports isolation of faults to the failed circuit board or assembly level shown in the replaceable parts list m Supports removal and replacement of those boards or assemblies m Supports removal and replacement of fuses chassis and other mechanical parts listed in the replaceable parts list This m
56. ce Verification and Adjustment Procedures chapters of this manual m Operating Information describes front panel connectors and indicators the power on procedure self cal self tests and instrument commands used for maintenance Basic installation instructions are contained in the Tektronix Logic Analyzer Family User Manual refer to that manual for detailed information not covered in this manual This section describes how the following tasks m Set the logical address m Install the DSO module in a mainframe m Remove the DSO module from a mainframe Every module installed within a mainframe must have a unique logical address no two modules can have the same address Two rotary switches on the rear panel of the DSO module select the logical address Refer to Figure 2 1 for the switch location The factory default recommended switch setting FF allows the controller to assign a logical address to the digitizing oscilloscope module This is called Dynamic Auto Configuration You can also select static addresses between 01 and FE hexadecimal 1 to 254 decimal Read the following descriptions before setting the logical address TLA Series Digitizing Oscilloscope Modules Service Manual 2 1 Operating Information 2 2 NOTE Do not set the digitizing oscilloscope logical address to 00 Logical address 00 is reserved for the controller Least significant digit
57. cedures 1 Perform the Probe Interface removal procedure see page 6 19 2 Remove the RF shielding gasket from the BNC connectors Set the shield aside 3 Unplug two 2 100 pin ribbon cables from J100 and J101 as follows a Grasp and squeeze the metal cable retainers Figure 6 9 to unlock the cable from its connector b Unplug the cable from the Acquisition Board Set the cable aside 100 pin ribbon cables Squeeze to unlock cable RF shielding gasket Figure 6 9 Acquisition board replacement 6 22 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Installation Use the following procedure and Figure 6 9 to install the Acquisition Board NOTE After replacing the Acquisition Board you must verify operation and perform the adjustment and Performance Verification procedures 1 Plug two 2 100 pin ribbon cables onto J100 and J101 Be sure to firmly seat the cables into their sockets so the cable retainers snap into place 2 Install the RF shielding gasket onto the BNC connectors 3 Perform the Probe Interface installation procedure page 6 21 Rear EMI Gaskets You will want to use both hands to replace the four rear EMI Gaskets Removal Use the following procedure to remove the rear EMI gaskets 1 Remove the cover page 6 10 2 Forthe two rear gaskets on the chassis remove the processor board page 6 13 and the acquisition board page 6 22
58. contain information to set up the window as needed Listing Data Window The Listing Data Window displays acquired data as tabular text Each column of data represents one group of data or other logical data information such as time stamps Each row of data represents a different time that the data was acquired newer samples of data display below older samples Waveform Data Window The Waveform Data Window displays acquired data as graphical waveforms All defined channel groups display as busforms for the logic analyzer and as individual channels for the digitizing oscillo scope Refer to the online help for more information on the individual menus icons and fields within each window TLA Series Digitizing Oscilloscope Modules Service Manual be A Theory of Operation This chapter describes the electrical operation of the DSO module The information supports fault isolation to the module or circuit board level It supplements the diagnostic information found in the Troubleshooting section that begins on page 6 25 The following Block Level Description describes circuit operation to the functional block level When reading this description refer to Figure 9 1 and Figure 9 2 for interconnection and block diagram illustrations respectively Block Level Description The block level description provides an overview of each functional circuit within the DSO module Except for the number of channels the basic operation is the same f
59. cquisition Board A2 to expedite troubleshooting if you have known good boards available See the Mechanical Parts List section to locate the Tektronix part numbers for replacement parts This procedure requires that the module is installed in a fully functional mainframe If you have not determined that the mainframe is functional or if you suspect the problem might be in a probe or in another module refer to Eliminate Other Problem Sources on page 6 26 above TLA Series Digitizing Oscilloscope Modules Service Manual 6 27 Troubleshooting Equipment Required Preparation 6 28 The test equipment needed to troubleshoot the DSO module depends on the type of failure Many faults can be detected using a digital multimeter Testing and adjustments might be required to correct some faults Under those circumstances you will need the test equipment listed in the Performance Verification chapter The fault isolation procedure requires that you m recognize codes flashed by the front panel LEDs during power up m be familiar with the power on diagnostics W know how to run extended diagnostics and self calibration Front Panel LEDs The READY ARM D and TRIG D front panel LEDs provide information about the DSO module at power on You will use these indicators while performing the Fault Isolation Procedure LED behavior follows m Under normal conditions the ARM D and TRIG D indicators light for a short time after power is
60. d Adjustment Technical Reference 070 9776 XX When ordering a replacement or exchange processor board from Tektronix you must supply the following information model number serial number and firmware level Perform the Cover removal procedure see page 6 10 Unplug two 100 pin ribbon cables from J6 and J9 Remove six 6 screws that secure the Processor Board to the chassis Be OR e Carefully move the Processor Board away from the front panel until the tab Figure 6 4 clears the front subpanel 5 Lift the board above the chassis Then unplug the yellow white coaxial cable from J3 TLA Series Digitizing Oscilloscope Modules Service Manual 6 13 Removal and Installation Procedures Installation 6 14 J3 Remove screws 6 M under board i Processor board wf 100 pin ribbon cable 2 Figure 6 4 Processor board removal Use the following procedure and Figure 6 4 to install the Processor Board NOTE After replacing the Processor Board you must verify operation and you must perform the adjustment and Performance Verification procedures as described in this manual When ordering a replacement or exchange processor board from Tektronix you must supply the following information model serial and firmware level 1 Hold the Processor Board above the chassis and install the yellow white coaxial cable at J3 2 Insert the tab on the Processor Board into the front subpa
61. d and conducted emissions Pollutions Degree 2 as defined in IEC 1010 1 indoor use only Description Chassis parts constructed of aluminum alloy front panel constructed of plastic laminate circuit boards constructed of glass laminate Cabinet is aluminum Weight Products Weight TLA7D1 and TLA7E1 2 44 kg 5 38 Ibs TLA7D2 and TLA7E2 2 55 kg 5 63 Ibs Weight shipping Products Weight TLA7D1 and TLA7E1 6 35 kg 14 Ibs TLA7D2 and TLA7E2 7 71 kg 17 Ibs Overall Dimensions Height 262 05 mm 10 32 in Width 60 66 mm 2 39 in Depth 373 38 mm 14 70 in 1 8 TLA Series Digitizing Oscilloscope Modules Service Manual leer SS Operating Information Installation Setting the Logical Address This chapter describes how to operate the DSO module when performing maintenance The operating information is limited to the functions you need to perform the procedures found in this manual You can find more detailed operating instructions in the Tektronix Logic Analyzer Family User Manual and in the online help The following sections are included in this chapter m The Installation section describes how to install the DSO module in the mainframe m The Software Installation and Removal section describe how to install and remove the performance verification and adjustment software You need this software to complete the performance verification procedures and adjustment procedures as described in the Performan
62. d previously are met for the procedure 2 Follow the on screen instructions to run all of the tests for the DSO module NOTE All of the tests that are listed must be run There are no optional tests 3 Verify no failures occur for each test If a test continues to fail check the Troubleshooting section on page 5 5 TLA Series Digitizing Oscilloscope Modules Service Manual 5 9 Adjustment Procedures DSO Procedure3 This procedure adjusts the pulse trigger of the DSO module Pulse Trigger Adjustment SW test names GLITCH TRIG CAL PNP LATENCY CAL Equipment No changes from the previous test Frequency Response Adjustment required unless power meter was used Prerequisites Warm up time 30 minutes The logic analyzer application is not running Test equipment connected as shown in Figure 5 2 Power up diagnostics pass Base Calibration completed 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run all of the tests for the DSO module NOTE All of the tests that are listed must be run There are no optional tests 3 Verify no failures occur for each test If a test continues to fail check the Troubleshooting section on page 5 5 5 10 TLA Series Digitizing Oscilloscope Modules Service Manual Adjustment Procedures DSO Procedure 4 This procedure adjusts the setup and hold parameters of the DSO module Setup and Hold Adjustm
63. d previously are met for the procedure 2 Follow the on screen instructions to run the test for each channel on the DSO module 3 After the test begins make changes to test equipment settings and connec tions when requested by the on screen instructions 4 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification DSO Procedure3 This procedure checks the offset accuracy of the DSO module Offset Accuracy SW test name Equipment required Prerequisites OFFSET ACCURACY No change from the DC Gain Accuracy test Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 3 Power up diagnostics pass INTERNAL CAL test passes 1 Verify that all of the prerequisites listed previously are met for the procedure Use caution when using voltages approaching this magnitude N WARNING These procedures use voltage levels that step through 99 90 volts 2 Follow the on screen instructions to run the test for each channel on the DSO module 3 After the test begins make changes to test equipment settings and connec tions when requested by the on screen instructions 4 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4
64. dule must be installed in a TLA700 Logic Analyzer must have been operating for a warm up period of at least 30 minutes and must be operating at an ambient temperature between 20 C and 30 C m The DSO module must have been last adjusted at an ambient temperature between 20 C and 30 C m The logic analyzer must be in an environment within the limits described in the Specifications section of the Tektronix Logic Analyzer Family User Manual When using the performance verification and adjustment software you will connect external test equipment to the DSO module in response to prompts on the screen You will connect the test signals and then instruct the program to continue The performance verification and adjustment software automatically selects the DSO module settings and determines the results of each test The results of the tests are recorded in a temporary file and are available for printing for certifica tion To obtain partial test information you can also run individual tests or selected groups NOTE The INTERNAL_CAL self calibration test must run successfully before the other tests are performed The remaining tests can be performed in any order The performance verification and adjustment software contains the tests shown in Table 4 2 Each test verifies one or more parameters All of the tests except INTERNAL CAL check characteristics that are designated as checked in the Specifications section of the
65. e Troubleshooting section on page 5 5 TLA Series Digitizing Oscilloscope Modules Service Manual 5 13 Adjustment Procedures Completing the Adjustment Steps After completing the adjustments obtain a copy of the test results and verify that all tests passed Run the Performance Verification Procedures to verify that all the parameters are within the allowable specifications 5 14 TLA Series Digitizing Oscilloscope Modules Service Manual Maintenance This chapter contains the information needed to do periodic and corrective maintenance on the DSO module The following sections are included The Maintenance section provides general information on preventing damage to internal circuit boards when doing maintenance lithium battery warnings and disposal instructions and procedures for inspecting the DSO module and cleaning its external and internal parts The Removal and Installation Procedures page 6 7 provide procedures for the removal and installation of circuit boards Troubleshooting page 6 25 provides information for isolating failed circuit boards Included are system level instructions that isolate faults within your system and troubleshooting trees that use the internal self tests and DC voltage measurements to isolate faults to a faulty circuit board Repackaging Instructions provides packaging information for shipment or storage Related Maintenance Procedures Preventing ESD A The following chapters contai
66. e securing nut and washer from the rear of the connector 4 Remove the BNC from the front panel Probe compensation BNC connector Figure 6 6 BNC replacement 6 16 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Installation Use the following procedure and Figure 6 6 to install the Probe Compensation BNC connector 1 2 Fuses Insert the BNC through the hole in the front panel Slide the washer onto the BNC so it rests against the back side of the front panel Using a 1 2 inch nut driver install the securing nut onto the rear of the connector Plug the coaxial cable into the rear of the BNC Perform the Processor Board installation procedure see page 6 14 match the type voltage and current rating of the original fuse See the CAUTION To avoid damage to the DSO module use only replacement fuses that Mechanical Parts List section for the part number of replacement fuses You will need a screwdriver with a size T 10 Torx tip a soldering iron and solder wick Table 6 3 items 1 2 6 and 7 to replace the fuses Removal Use the following procedure and Figure 6 7 to remove the fuses 1 2 3 Perform the Processor Board removal procedure see page 6 13 Use Figure 6 7 to locate the fuse to be replaced Using a soldering iron and solder wick unsolder and discard the fuse TLA Series Digitizing Oscilloscope Modules Service Manual 6 1
67. e sensitivity of the edge type trigger DC coupled of Main Trigger Sensitivity the DSO module SW test name TRIG MAIN SENS Equipment Sine wave generator item 14 required Precision BNC cable item 12 Type N to BNC adapter item 10 Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 9 Power up diagnostics pass INTERNAL CAL test passes DSO module CH1 O jm Precision BNC O O O cable Sine wave generator Type N to BNC adapter Figure 4 9 Initial setup for the main trigger sensitivity test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 TLA Series Digitizing Oscilloscope Modules Service Manual 4 23 Performance Verification DSO Procedure 11 This procedure checks the probe compensation output voltage of the Probe Compensation DSO module SW test name TRIG MAIN SENS Equipment Digital multimeter item 5 required Precision BNC cable item 12 Dual banana to BNC adapter item 6 Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software
68. e the module in the mainframe 4 Usea screwdriver to install the top and bottom retainer screws Alternate between the screws applying only a few turns at a time to fully seat the module Top retainer screws Ejector handle Simultaneously move handles apart to eject module Bottom retainer screws Figure 2 2 Module retainer screws and ejector mechanism TLA Series Digitizing Oscilloscope Modules Service Manual 2 3 Operating Information Removing the DSO module from the Mainframe Use the following procedure to remove the DSO module from a mainframe Power off the mainframe 2 Using a screwdriver loosen the top and bottom retainer screws Figure 2 2 3 Grasp the ejector handles on the DSO module At the same time move the top handle upward and the bottom handle downward to eject the DSO module 4 Pull the DSO module out of the mainframe Software Installation and Removal Verify PV Adjust Software 2 4 Version Verify Directories These procedures describe loading and unloading the performance verification and adjustment software Refer to the Tektronix Logic Analyzer Family User Manual for information on installing or removing any other software It is recommended you have 10 MB of free space on the hard drive before installing the software The Performance Verification software is located on Disk 1 of the Tektronix Logic Analyzer Family Application Software CD
69. eable part In general a field replaceable part is any circuit board or assembly that is listed in the replaceable parts list Symbols and terms related to safety appear in the Service Safety Summary found at the beginning of this manual The following manuals are available as part of the Tektronix Logic Analyzer Family documentation set The procedures in this manual assume that the service personnel have access to all manuals listed in the following table Other manuals may exist outside of the table as the product line offerings change Contact your local Tektronix Service Representative for the latest part numbers of the service documentation You can also obtain part numbers from the online help for the instrument TLA Series Digitizing Oscilloscope Modules Service Manual Preface Table i Tektronix Logic Analyzer Family Documentation Manual name The Tektronix Logic Analyzer Family User Manual The TLA715 Portable Mainframe Service Manual The TLA721 Benchtop Mainframe amp TLA7XM Expansion Mainframe Service Manual The TLA7Dx TLA7EX Digitizing Oscillo scope Module Service Manual The TLA7PG2 Pattern Generator Module Service Manual The TLA600 Logic Analyzer Service Manual Description Provides basic operation and installation information for the Tektronix Logic Analyzer Family Provides service information for the TLA715 Portable Mainframe Provides service information for the TLA721 Benchtop M
70. ecifications chapter of this manual As a general rule these tests should be done once a year Prerequisites These procedures ask for the serial number of the DSO module under test Before installing the DSO module in the benchtop chassis or portable main frame record the serial number of the DSO module Alternatively you can access the module serial number through the logic analyzer application Go to the System menu select System Properties and then click the DSO module tab You must quit the logic analyzer application before continuing with the performance verification and adjustment software procedures The tests in this section comprise an extensive valid confirmation of perfor mance and functionality when the following requirements are met m When multiple DSO modules of the same model number are installed in the mainframe the performance verification and adjustment software will address only the module in the highest slot number If you are testing a TLA7E1 module for example move it to a higher slot number than all other TLA7E1 modules in the mainframe This method avoids unnecessary module warm up time TLA Series Digitizing Oscilloscope Modules Service Manual 4 7 Performance Verification 4 8 Procedure Overview m The logic analyzer application must not be running and the performance verification and adjustment software must be loaded Refer to Software Installation and Removal on page 2 4 m The DSO mo
71. ector handle assembly has a notch on the right side and a tab on the left side the bottom injector ejector assembly does not have a notch or a tab 1 Install the ejector handle through the front panel cutout onto the mounting post 2 Install the screws to secure the injector ejector handle to the chassis 3 Apply the proper replacement label TLA Series Digitizing Oscilloscope Modules Service Manual 6 9 Removal and Installation Procedures Cover You will need a screwdriver with a size T 10 Torx tip Table 6 3 items 1 and 2 to replace the cover Removal Use the following procedure and Figure 6 2 to remove the cover 1 Place the module on its right side power requirements label facing down 2 Remove four 4 screws that secure the rear panel to the chassis Figure 6 2 Set the rear panel aside 3 Remove four 4 screws that secure the cover to the chassis 4 Lift the cover from the chassis Remove screws 8 Rear panel Figure 6 2 Cover removal 6 10 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Installation Use the following procedure and Figures 6 2 and 6 3 to install the cover NOTE The cover must be installed tightly against the chassis This will ensure that the DSO module fits into any two adjacent slots in the mainframe 1 Place the module on its right side 2 Place the cover onto the chassis CAUTION To prevent dam
72. ent SW test names Equipment required Prerequisites SETUP HOLD CAL No change from previous test Warm up time 30 minutes The logic analyzer application is not running Test equipment connected as shown in Figure 5 2 Power up diagnostics pass Base Calibration and Pulse Trigger adjustment completed 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify no failures occur for each test If a test continues to fail check the Troubleshooting section on page 5 5 TLA Series Digitizing Oscilloscope Modules Service Manual 5 11 Adjustment Procedures DSO Procedure 5 This procedure adjusts the channel to channel skew parameters of the Channel to Channel Skew DSO module Adjustment SW test names CHAN SKEW CAL Equipment Sine wave generator item 14 required Precision BNC cable item 12 Dual input BNC cable item 9 Type N to BNC adapter item 10 Prerequisites Warm up time 30 minutes The logic analyzer application is not running Test equipment connected as shown in Figure 5 4 Power up diagnostics pass Base Calibration completed Usethe dual input cable or a set of matched cables when running this test If you use unmatched coaxial cables the test may fail or may be mis calibrated due to an electrical mismatch between the cables DSO module CH1 O U oo Precisio
73. es Service Manual Theory of Operation Main Processor System The Main Processor System contains a 68330 micropro cessor that controls the entire instrument Commands and data sent to the instrument over the communications bus pass through the backplane interface which resides on the 68330 bus The 68330 bus also routes data between the Main Processor System and the DSP Processor System The Main Processor System includes the instrument firmware To facilitate upgrades the firmware resides in FlashROM that can be reprogrammed using a Slot 0 controller DSP Processor System The DSP Processor System contains a 320C31 microprocessor that controls signal acquisition waveform processing and measurements Acquisition Memory addressing signals are transferred over the DSP Bus The DSP Processor System is under control of the Main Processor System Backplane Interface The backplane interface transfers commands and data between the communications bus and the Main Processor System Signals pass between the instrument and the communications bus through the P1 commu nications bus connector Power Supplies The Power Supplies receive 5 V 5 V and 12 V from the communications bus mainframe to power the DSO module Fuses protect the mainframe from over current conditions Voltage regulators produce additional 15 V and 5 V supplies for use on the Acquisition Board A2 All power connections to the Acquisition Board A2 are made through the
74. ion Frequency range 1 Hz to 20 MHz Hewlett Packard 3325B Frequency accuracy 0 196 Amplitude range 10 mV to 20 Vp p 14 Generator sine wave Frequency range 100 kHz to 1005 MHz Gigatronics 6061 Frequency accuracy 6 ppm Amplitude 2 mV to 1 5 Vrms Accuracy 0 35 dB 15 Power meter with sensor Bandwidth gt 1 2 GHz Accuracy 0 2 dB Sensitivity 500 pW to 20 mW Rohde amp Schwarz NRVS with model NRV Z4 Sensor 16 Adapter N to BNC used only with power meter Female type N to male BNC Tektronix part number 103 0058 XX 17 50 Q power divider used only with power meter Provide load isolation between equipment Maximum VSWR 1 50 Tektronix part number 015 0565 XX 18 SMA to BNC adapters used only with power meter For use with the 50 2 power divider three required Tektronix part number 015 1018 XX 19 Printer with cable optional to print Calibration Data Reports PC compatible continuous feed prints ASCII text connects to EPP connector Any general purpose printer 1 The capacitor is installed across the Data Precision 8200 output terminals to reduce noise If your voltage reference produces 4 mVp p of noise external noise reduction is not necessary TLA Series Digitizing Oscilloscope Modules Service Manual 4 3 Performance Verification Functional Verification The functional verification procedure consists of the following parts m Self tests and power o
75. ions that support general service to the circuit board level Performance Verification contains the performance verification procedures for the DSO Module Adjustment Procedures contains the adjustment procedures for the DSO Module Maintenance contains information and procedures for doing preventive and corrective maintenance on the DSO Module Included are instructions for cleaning for removal and installation of replaceable parts and for trouble shooting Options contains information on the factory installed options that may be available for the DSO Module TLA Series Digitizing Oscilloscope Modules Service Manual ix Preface Manual Conventions Modules Replaceable Parts Safety Related Manuals m Diagrams contains a block diagram and an interconnection diagram useful for isolating failed circuit boards or assemblies m Mechanical Parts List includes a table of all replaceable parts their descriptions and their Tektronix part numbers This manual uses certain conventions that you should become familiar with before attempting service Throughout this manual the term module refers to a TLA 700 Series Logic Analyzer or DSO unit that mounts inside a TLA 700 Series Portable or Benchtop Chassis A module is composed of circuit cards interconnecting cables and a user accessible front panel This manual refers to any field replaceable assembly or mechanical part specifically by its name or generically as a replac
76. ked thoroughly to verify correct operation and performance Immediately repair defects that could cause personal injury or lead to further damage to the DSO module or the mainframe in which it is used TLA Series Digitizing Oscilloscope Modules Service Manual 6 3 Maintenance Table 6 1 External inspection check list Item Inspect for Front panel and side Cracks scratches deformations cover missing or damaged retainer screws ejector handles or gaskets Front panel connectors Broken shells cracked insulation and deformed contacts Dirt in connectors Rear connectors Cracked or broken shells dam aged or missing contacts Dirt in connectors Accessories Missing items or parts of items bent pins broken or frayed cables and damaged connectors Repair action Replace defective or missing parts Replace defective parts Clear or wash out dirt Replace defective parts Clear or wash out dirt Replace damaged or missing parts frayed cables and defec tive circuit boards CAUTION To prevent damage to electrical components from moisture during external cleaning use only enough liquid to dampen the cloth or applicator 6 4 Cleaning Procedure Exterior To clean the DSO module exterior perform the following steps 1 Remove loose dust on the outside of the DSO module with a lint free cloth 2 Remove remaining dirt with a lint free cloth dampened with water Do not use abrasive
77. kes several minutes to complete Upon successfully completing the self calibration the module status changes from Running to Calibrated and the Date and Time field is set to the present You should perform a probe calibration on any active probes that you intend to use with the DSO module To perform the probe calibration complete the following steps 1 Connect an oscilloscope probe to the probe input channel on the DSO module 2 Connect the DSO probe calibration fixture to the DSO module probe compensation output 3 Click the Setup button in the DSO module icon 4 Select the tab page for the input channel TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification 5 Click the Probe Cal button 6 Follow the on screen instructions for completing the probe calibration For more information on the probe calibration refer to the online help DSO Module Certification The certification procedures for the DSO module consist of performing the Performance Verification Tests and printing the software generated Calibration Data Report Performance Verification Instructions This section contains information to verify the performance of the DSO module Testing is performed using the performance verification and adjustment software The performance verification and adjustment software contains instructions and control programs for testing each characteristic that is designated as checked in the Sp
78. l number of the DSO module under test Before installing the DSO module in the benchtop chassis or portable main frame record the serial number of the DSO module Alternatively you can access the module serial number through the logic analyzer application In the logic analyzer application go to the System menu select System Properties and then click the DSO module tab You must quit the logic analyzer application before continuing with the performance verification and adjustment software procedures Only trained service technicians should perform this procedure after meeting the following requirements When multiple DSO modules of the same model number are installed in the mainframe the performance verification and adjustment software will address only the module in the highest slot number If you are testing a TLA7E1 module for example move it to a higher slot number than all other TLA7E1 modules in the mainframe This method avoids unnecessary module warm up time m The logic analyzer application must not be running m The performance verification and adjustment software must be loaded m The DSO module requires a 30 minute warm up time in a 20 C to 430 C environment before it is adjusted Adjustments performed before the operating temperature has stabilized may cause errors in performance TLA Series Digitizing Oscilloscope Modules Service Manual 5 1 Adjustment Procedures Using the Software 5 2 Performing the
79. le for a reman ufactured module These modules cost significantly less than new modules and meet the same factory specifications For more information about the module exchange program call 1 800 TEK WIDE extension 6630 Module Repair and Return You may ship your module to us for repair after which we will return it to you New Modules You may purchase replacement modules in the same way as other replacement parts TLA Series Digitizing Oscilloscope Modules Service Manual Replaceable Parts List Using the Replaceable Parts List This section contains a list of the mechanical and or electrical components that are replaceable for the DSO Module Use this list to identify and order replace ment parts The following table describes each column in the parts list Parts List Column Descriptions Column Column name Description 1 Figure amp Index Number Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow 2 Tektronix Part Number Use this part number when ordering replacement parts from Tektronix 3and4 Serial Number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entries indicates the part is good for all serial numbers 5 Qty This indicates the quantity of parts used 6 Name amp Description An item name is separated from the description by a colon
80. m When the Slot 0 controller asserts the Module Identification MODID line ARM D Indicator The green LED lights when the digitizing oscilloscope is ready to accept a trigger signal to complete an acquisition TRIG D Indicator The green LED lights when a trigger is received for the most recent acquisition PROBE COMPENSATION The BNC output provides a signal for adjusting probe compensation The square wave frequency is approximately 1 kHz Amplitude is 500 mV into a 50 Q load Menu Overview The digitizing oscilloscope is controlled by interactive windows through the Windows application The TLA Series application consists of the following windows m System window This window provides an overview of the entire logic analyzer Use this window to navigate through the logic analyzer Figure 2 4 shows an example of the system window TLA Series Digitizing Oscilloscope Modules Service Manual 2 7 Operating Information 2 8 Ek Grice ria jhi ws mri welt ces jo EL ACER ici d ET TENE I Saig DSI E aici Tobar LA T aial i einer a a A Figure 2 4 Typical system window The center of the System window displays icons which represent hardware modules installed in the logic analyzer The icons are links to the other windows in the logic analyzer Setup Window A setup window exists for each module in the logic analyzer It contains all of the setup information for the digitizing oscilloscope module Menus and dialogs
81. module is flush with front panel Mainframe power supply failure contact local Tektronix service center Open fuses in module s Corrupted module firmware reinstall firmware DSO module does not m Module not fully inserted make sure front of module is flush pass the normal power on with front panel diagnostics READY indi amp Module failure see Troubleshoot the Digitizing Oscilloscope cator not green Module on page 6 27 or contact local Tektronix service center DSO module loses set DSO module failure see Troubleshoot the Digitizing tings when power is Oscilloscope Module on page 6 27 or contact local Tektronix turned off service center DSO module battery failure refer to page 6 13 for Processor Board A1 replacement instructions DSO module will not ac DSO module failure see Troubleshoot the Digitizing quire data or the acquired Oscilloscope Module or contact local Tektronix service center data is incorrect wm Faulty probe or lead set Eliminate Other Problem Sources The DSO module is part of the TLA700 Series Logic Analyzer which comprises modules installed in one of two mainframes benchtop or portable The following procedures will help you eliminate the mainframe and other modules as possible sources of the failure s that you troubleshoot 6 26 TLA Series Digitizing Oscilloscope Modules Service Manual Troubleshooting Substitute a Good Module If you have available a known good DSO module
82. mpedance DC 1 MS Coupled 1 MQ 0 596 in parallel with 10 pF 3 pF Input Impedance Selections 1MQ or 50 Q Input Resistance DC 50 Q Coupled 50 Q 1 Input VSWR DC 50 Coupled x1 3 1 from DC 500 MHz lt 1 5 1 from 500 MHz 1 GHz Input Voltage Maximum DC 1 MQ AC 1 MQ 300 Vams but no greater than 420 V peak Installation category Il derated at or GND Coupled 20 dB decade above 1 MHz Input Voltage Maximum DC 50 O or AC 50 5 Vans with peaks lt 25 V Coupled Lower Frequency Limit AC Coupled typical 10 Hz when AC 1 MQ Coupled 200 kHz when AC 50 Q Coupled Random Noise Bandwidth Selection RMS Noise Full x 350 uV 0 5 of the full scale Setting 250 MHz 165 uV 0 5 of the full scale Setting 20 MHz x 75 uV 0 5 of the full scale Setting Range Internal Offset Full Scale Range Setting Offset Range 10mV 1V 1V 1 01V 10V 10V 10 1 V 100 V 100 V Range Sensitivity Full Scale Range 10 mV to 100 V All Channels Step Response Settling Errors typical asd 3 i Maximum Settling The maximum absolute difference between the _ Full Scale Range Error at value at the end of a specified time interval after Setting Step Response 20ns 100ns 20ms the mid level crossing of the step andthe value 9mV 1V lt 2 V 0 5 0 2 0 1 one second after the mid level crossing of the step expressed as a percentage of the step 1 01 V 10V lt 20 V 1 0 0 576 0 2 amplitude See IEEE std 1057 Section 4 8 1 10 1 V 100 V
83. n BNC cable Dual input cable Sine wave generator Type N to BNC adapter Figure 5 4 Initial setup for the channel to channel skew adjustment 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify no failures occur for each test If a test continues to fail check the Troubleshooting section on page 5 5 5 12 TLA Series Digitizing Oscilloscope Modules Service Manual Adjustment Procedures DSO Procedure 6 This procedure adjusts the probe compensation output voltage of the DSO Probe Compensation module Adjustment SW test names PROBE COMP CAL Equipment Digital multimeter item 5 required Precision BNC cable item 12 Dual banana to BNC adapter item 6 Prerequisites Warm up time 30 minutes The logic analyzer application is not running Test equipment connected as shown in Figure 5 5 Power up diagnostics pass INTERNAL CAL test pass Probe compensation DSO module IS CH a Digital multimeter Precision BNC gt cable Dual banana to BNC adapter Figure 5 5 Initial setup for the probe compensation test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify no failures occur for each test If a test continues to fail check th
84. n diagnostics m Extended diagnostics m Self calibration Self cal W Probe calibration This procedure provides a functional check only Perform the functional verification procedure whenever you need to gain confidence that the DSO module is operating properly If more detailed testing is required perform the performance verification procedure which begin on page 4 7 after completing the functional check procedures Test Equipment You will need the following test equipment identified by the item numbers listed in Table 4 1 on page 4 3 TLA700 Series Logic Analyzer mainframe with one DSO module m One P6243 or P6245 oscilloscope probe with standard accessories item 3 m One DSO probe calibration fixture item 2 m One male male BNC adapter item 4 Setup Itis assumed that the DSO module is properly installed and that all accessories are connected Refer to the Tektronix Logic Analyzer Family User Manual for detailed installation instructions Power on the instrument and allow a 30 minute warmup before continuing with any procedures in this section Self Tests and Power On During power on the installed modules perform an internal self test to verify Diagnostics basic functionality No external test equipment is required The self tests require only a few seconds per module to complete The front panel ARM D and TRIG D indicators blink during the self test After testing completes the front panel indicators have the following s
85. n information procedures related to maintenance The Performance Verification chapter contains tests that may be useful in isolating problems by testing DSO module performance The Adjustment Procedures chapter contains a procedure for adjusting the internal circuits of the DSO module The procedure may be used after repairs are made or for periodic adjustments When performing any service which requires internal access to the DSO module adhere to the following precautions to avoid damaging internal circuit boards and their components due to electrostatic discharge ESD CAUTION Static discharge can damage any semiconductor component in this DSO module 1 Minimize handling of static sensitive circuit boards TLA Series Digitizing Oscilloscope Modules Service Manual 6 1 Maintenance Battery Disposal A 2 Transport and store static sensitive circuit boards in their static protected containers or on a metal rail Label any package that contains static sensitive boards 3 Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these circuit boards Do service of static sensitive circuit boards only at a static free work station 4 Nothing capable of generating or holding a static charge should be allowed on the work station surface 5 Handle circuit boards by the edges when possible Do not slide the circuit boards over any surface 7 Avoid handling circuit bo
86. n the DSO module interior perform the following steps 1 Blow off dust with dry low pressure deionized air approximately 9 psi 2 Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol 75 solution and rinse with warm deionized water A cotton tipped applicator is useful for cleaning in narrow spaces and on circuit boards NOTE If after performing steps 1 and 2 a part is clean upon inspection skip the remaining steps If steps I and 2 do not remove all the dust or dirt the DSO module may be spray washed using a solution of 75 isopropyl alcohol see steps 3 through 7 3 Gain access to the parts to be cleaned by removing easily accessible shields and panels TLA Series Digitizing Oscilloscope Modules Service Manual 6 5 Maintenance 6 6 Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the majority of the alcohol to evaporate Use hot 48 9 C to 60 C 120 F to 140 F deionized water to thoroughly rinse the parts Dry all parts with low pressure deionized air Dry all components and assemblies in an oven or drying compartment using low temperature 51 7 C to 65 6 C 125 F to 150 F circulating air TLA Series Digitizing Oscilloscope Modules Service Manual HEREDES EDO E Removal and Installation Procedures This section describes how to remove and install the major mechanical and electrical modules WARNING Before doing this o
87. nactarr or Gee mot uen dl irte be dhara ikr If you select no a prompt asks you to enter the serial number again The program lists sequences for PV performance verification and ADJ adjustments Enter a number to select which sequence you want and click Enter to continue If an instrument is being tested the program lists the different probe types available for testing Enter the appropriate number corresponding to your probe and then click Enter to continue Enter the operating temperature in degrees C entries in the range of 20 to 30 degrees are valid Click Enter to continue Enter the operating humidity as a percentage 0 to 100 entries are valid Click Enter to continue Determine which sequence to run m RUN FULL SEQUENCE runs the entire sequence from beginning to end This is the recommended selection m RUN PARTIAL SEQUENCE runs part of the full sequence The sequence runs from the selected starting point to the end of the sequence TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification m SELECT TEST S runs only the selected tests To run a single test enter the test number To run multiple tests enter a comma separated list of numbers or a hyphen separated list of numbers Enter the number next to your choice and click Enter to continue 14 Follow the on screen instructions to connect and adjust test equipment 15 When testing is completed disconnect the test equi
88. nel as shown in Figure 6 5 Then set the Processor Board in place on the chassis TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Tab on processor board Front i x slot P1 connector during installation BEN s Push forward on x 4 Chassis d Figure 6 5 Inserting processor board tab into front subpanel 3 Push forward on the Processor Board P1 connector To ensure proper alignment the tab must be fully inserted into the front subpanel slot 4 While holding the Processor Board in place install the six 6 screws that secure the Processor Board to the chassis 5 Install the two 100 pin ribbon cables at J6 and J9 6 Perform the Cover installation procedure see page 6 11 TLA Series Digitizing Oscilloscope Modules Service Manual 6 15 Removal and Installation Procedures Probe Compensation BNC Connector You will need a screwdriver with a size T 10 Torx tip and a 1 2 inch nut driver Table 6 3 items 1 2 and 4 to replace the BNC connector for PROBE COMPENSATION NOTE Only remove and replace the Probe Compensation BNC Connector Do not remove and replace the Channel 1 through 4 BNC Removal Use the following procedure and Figure 6 6 to remove the Probe Compensation BNC connector 1 Perform the Processor Board removal procedure see page 6 13 2 Unplug the coaxial cable from the rear of the BNC 3 Using a 1 2 inch nut driver remove th
89. ns for performing the adjustments The basic steps for completing the procedures follow 1 Start the program and enter user and product identification information Select a full adjustment sequence Connect the test equipment Run each adjustment step as instructed Ub cde et After completing all the adjustment steps view the test results to confirm that the adjustment was successful When a test passes the software automatically loads new calibration data into the DSO module memory NOTE Use the dual input cable or a set of matched cables for electrical length when running the CHAN SKEW CAL test If you use unmatched separate coaxial cables the adjustment may fail or may be miscalibrated due to an electrical mismatch between the cables TLA Series Digitizing Oscilloscope Modules Service Manual Adjustment Procedures Troubleshooting If any adjustments fail use the following steps to troubleshoot the problems 1 2 Check all test equipment for improper or loose connections Check that all test equipment is powered on and has the proper warm up time Run the adjustment procedures a second time to verify the failure If the adjustment procedures continue to fail refer to Table 5 2 to determine the source of the failure and then refer to the TLA7Dx TLA7EXx Digitizing Oscilloscope Service Manual for corrective action Table 5 2 Fault isolation Adjustment procedure 1 Adjustment Procedures
90. on Fault Isolation Procedure This section contains two troubleshooting charts that will help you locate faulty DSO module circuit boards The Primary Troubleshooting Procedure chart on page 6 30 provides troubleshooting steps that test the DSO module circuit boards The Power Supply Troubleshooting Procedure chart on page 6 31 locates power supply faults within the DSO module Install the DSO module into a mainframe Before you power on the mainframe watch the READY ARM D and TRIG D front panel indicators Power on the mainframe and note how the front panel indicators respond Use the Primary Troubleshooting Procedure chart on page 6 30 to determine how to proceed If diagnostic failures occur the tree will refer you to Table 6 6 on page 6 33 Using that table you can correlate the failed test displayed with a failed board but first check the special cases of diagnostic failures below m Ifthe Calibration Checksums repeatedly fails but Nonvolatile RAM passes replace the ACQ board m If Phase Lock Loop and VXI Time Correlation fail check the backplane 10 MHz clock and if needed then replace the ACQ board m Large numbers of acq failures could indicate an interconnect problem between MPU and ACQ boards check the interconnections m If you replace a board that is not calibrated an uncalibrated error can occur even though both boards are good Calibration can fix the error TLA Series Digitizing
91. on System amplifies the input signals samples them and converts them to digital signals with 8 bit resolution The system controls the acquisition process under direction of the Main Processor System Voltage Controlled Oscillator VCO Master clocks for the Acquisition System are generated by the Voltage Controlled Oscillator VCO The VCO circuit is a phase locked loop that is referenced to a 10 MHz clock provided by the mainframe Trigger The Trigger circuit produces trigger signals to control the Acquisition System timebase Trigger signals are selected from the following sources W Attenuator internal triggering m Intermodule Triggers triggering from the communications bus Intermodule Triggers The Intermodule Triggers circuit routes system generated TTLTRG and ECLTRG trigger signals to the Trigger circuit Under control of the Main Processor System the Intermodule Triggers circuit selects which TTLTRG and ECLTRG trigger signals are active and defines the arming and triggering parameters The Processor Board A1 controls instrument hardware signal acquisition and communications functions Two 100 pin ribbon cables provide interconnections with the Acquisition Board A2 for power supplies waveform data and control signals The Processor Board A1 consists of the following circuits m Main Processor System m DSP Processor System m Backplane Interface m Power Supplies TLA Series Digitizing Oscilloscope Modul
92. or each model The TLA7D2 and TLA7E2 models have four input channels The TLA7D1 and TLA7E1 have two input channels Input Output Connectors Input signals to be measured enter the DSO module through probes or cables connected to BNC connectors on the front panel A probe interface detects the attenuation factor of each probe The probe data is routed to the Acquisition Board A2 where it is used to set the vertical scale The front panel BNC provides a probe compensation signal A coaxial cable assembly routes the signals between the front panel and the circuit boards Acquisition Board A2 The Acquisition Board A2 accepts analog input signals and converts them to digital information Two 100 pin ribbon cables provide interconnections with the Processor Board A1 for power supplies waveform data and control signals The Acquisition Board A2 consists of the following circuits Attenuators W Acquisition System m VCO m Trigger m Intermodule Triggers TLA Series Digitizing Oscilloscope Modules Service Manual 3 1 Theory of Operation 3 2 Processor Board A1 Attenuators Signals applied to each channel input CH 1 CH 2 CH 3 and CH 4 connect to an attenuator The Main Processor System controls the attenuators The attenuators select input coupling termination bandwidth offset and full scale range Outputs from each attenuator drive the Acquisition System and Trigger circuits Acquisition System The Acquisiti
93. perform the following procedure 1 Remove the suspect DSO module from the mainframe 2 Install a known good DSO module in the same slot as the suspected module Remember to set the logical address to FF see Setting the Logical Address on page 2 1 3 Power on the mainframe and check for normal operation 4 Ifthe failure symptoms are still present with the known good DSO module installed the problem most likely is in the mainframe not in the DSO module NOTE Viewing the diagnostic window from the Logic Analyzer application may help you isolate failures to individual modules or to the mainframe 5 If your DSO module operates normally the suspect DSO module needs to be repaired Refer to Troubleshoot the Digitizing Oscilloscope Module on page 6 27 for the troubleshooting procedures you need to locate faults within the DSO module Check the Mainframe If you do not have a known good module and are not sure the problem is in the DSO module perform the following procedure to make sure the mainframe is not the source of the failure m Perform the troubleshooting procedures in either the portable mainframe service manual or those in the benchtop controller service manual Troubleshoot the DSO Module Follow the procedure in this section to identify the failed part within the DSO module NOTE In addition to the procedure for fault isolation found here you may choose to substitute for a suspect Processor Board A1 or A
94. pment Using the Interrupt Button While the program is running you can interrupt the program to rerun a test start over or to exit the program by clicking the Interrupt button shown below Interrupt The program will then provide a list of choices Enter the number next to the choice that you want and click Enter NOTE If you interrupt a test before it has completed you must restart the test to obtain valid test data Some tests such as Internal Cal do not allow interrupts If you stop these tests using more aggressive methods you may have to reboot the instrument Obtaining Test Results The results of all tests can be stored in a file on the hard disk You can view the test results print the test results to a printer or save the test results in another file on the hard disk The software stores the test results in a file containing the module name and serial number for example TLA7E2 B020123 The file is located under the following path C Tekcats Rpt NOTE If you want to save the content of the Report file you must rename or copy the Report file using the Windows file utilities such as Explorer The Report file will be overwritten the next time you run the performance verification and adjustment software and print or view a new set of test data After completing a full or partial test sequence or just before you exit the program you can generate the test data and write it to a file You have the op
95. quires Option C3 Three years repair coverage Option R3 Provides three years of repair coverage for the instrument including displays and accessories sold with the instrument Cal data report Option D1 Provides a calibration test data report Tektronix Service Options are available at the time you order your instrument Contact your local Tektronix Sales Office for more information TLA Series Digitizing Oscilloscope Modules Service Manual Options 7 2 TLA Series Digitizing Oscilloscope Modules Service Manual a a ss Replaceable Electrical Parts Refer to the Replaceable Mechanical Parts chapter for a complete listing and description of replaceable parts for the DSO module TLA Series Digitizing Oscilloscope Modules Service Manual 8 1 Replaceable Electrical Parts 8 2 TLA Series Digitizing Oscilloscope Modules Service Manual y Diagrams This chapter contains the block diagram and the interconnection diagram for the DSO module A2 Acquisition board A1 Processor board Probe J1153 interface CH1 e M F Interconnect CH2 Attenuator TLA7E2 and TLA7D2 only NC M F Interconnect P2 M F Interconnect Probe compensation 3 N Figure 9 1 Interconnections TLA Series Digitizing Oscilloscope Modules Service Manual 9 1 Diagrams CH 1 CH2 CH3 TLA7E2 and TLA7D2 Only CH4 Probe e HO O a
96. r istics that are designated as checked in the Specifications chapter of this manual Table 4 1 shows the required equipment list Always warm up the equipment for 30 minutes before beginning the procedures Table 4 1 Test Equipment Item number and description 1 Mainframe Minimum requirements TLA700 Series Mainframe with a DSO module installed Example TLA721 Benchtop mainframe or TLA715 Portable Mainframe Tektronix part number 671 3930 XX 2 DSO probe calibration fixture 3 DSO probes One required Two required with one inch ground leads Tektronix P6243 or P6245 probe with std accessories 4 Adapter male BNC to male BNC One required Tektronix part number 103 0029 XX DCV accuracy 0 1 from 10 V to 100 V Tektronix part number 103 0090 XX 5 Digital multimeter with test leads 6 Connector dual banana 7 Voltage reference 8 Capacitor Female BNC to dual banana Accuracy 0 0196 Tektronix DMM 900 Series Data Precision 8200 Tektronix part number 283 0189 XX 9 Cable dual input 10 Adapter N to BNC 0 1 uF 200 V Female BNC to dual male BNC Male type N to female BNC Tektronix part number 067 0525 XX Tektronix part number 103 0045 XX 11 Adapter SMA to BNC Female type SMA to female BNC Tektronix part number 015 1018 XX 50 36 in male to male BNC connectors 12 Cable precision 50 Q coaxial Tektronix part number 012 0482 XX 13 Generator funct
97. r any other procedure in this manual read the General Safety Summary and Service Safety Summary found at the beginning of this manual To prevent possible injury to service personnel or damage to electrical compo nents read Preventing ESD on page 6 1 Summary of Procedures The procedures are listed below in the order in which they appear in this section Injector Ejector Handles on page 6 8 describes how to replace the module ejector handles Cover on page 6 10 describes how to replace the module cover Processor Board on page 6 13 describes how to replace the Processor Board A1 Performance verification is required if this board is replaced Probe Compensation BNC Connector on page 6 16 describes how to replace the five front panel BNC connectors not channel input connectors Fuses on page 6 17 describes how to replace the BNC connector fuses and fuses related to power supplies Probe Interface on page 6 19 describes how to replace the probe interface flex circuit Acquisition Board on page 6 22 describes how to replace the Acquisition Board A2 Performance verification is required if this board is replaced Rear EMI Gaskets on page 6 23 describes how to replace the EMI gaskets at the rear of the module TLA Series Digitizing Oscilloscope Modules Service Manual 6 7 Removal and Installation Procedures Tools Required Most modules in the DSO module can be removed using a screwdriver handle mounted with size T 10
98. ring Range Trigger Level Range Trigger Point Position Resolution Trigger Level Resolution Trigger Position Sensitivities Pulse Type Runt Trigger typical Sensitivities Pulse Type Trigger Width and Glitch typical Sensitivity Edge Type Trigger DC Coupled Description Time Range Accuracy 2 ns to 500 ns x 2096 of Setting 0 5 ns 520 nsto 1s 104 5 ns 0 01 of Setting 2 x Setting 0 03 of Full Scale Range Offset Accuracy for signals having rise and fall times 20 ns 2nstois Source Range Any Channel 100 of full scale range Minimum 0 Maximum 100 0 2 of full scale for any Channel source One Sample Interval at any Sample Rate 10 of full scale from DC to 500 MHz for vertical settings gt 100 mV full scale and x10 V full scale at the BNC input 10 of full scale for vertical settings gt 100 mV full scale and 10 V full scale at the BNC input The minimum signal levels required for stable edge triggering of an acquisition when the trigger source is DC coupled Products TLA7E1 and TLA7E2 Trigger Source Sensitivity 3 596 of Full Scale Range from DC to 50 MHz in creasing to 1096 of Full Scale Range at 1 GHz Any Channel TLA7D1 and TLA7D2 Any Channel 3 596 of Full Scale Range from DC to 50 MHz in creasing to 1096 of Full Scale Range at 500 MHz Sensitivity Edge Type Trigger Not DC Coupled typical Trigger Coupling Typical Signal Level for
99. rrelation ACQ Vai Control Voltage Serial Loop ACQ Vai Vasi Extended Trigger Serial Loop ACQ Vai Vasi Trigger Comparitor Serial Loop ACQ Pai Pali Preamp Serial Loop ACQ Vai Vasi Attenuator Serial Loop ACQ Val Val Acquisition Processor Acquisition Processor ACQ MPU Vai Vasi Trigger Trigger Functional ACQ Vai Vasi Adjustment After Repair After removing and replacing the processor board or the acquisition board refer to the Adjustment Procedures and the Performance Verification chapters in this manual to run the adjustment procedures and the performance verification procedures 6 34 TLA Series Digitizing Oscilloscope Modules Service Manual a aS Repackaging Instructions Packaging Storage This section contains the information needed to repackage the DSO module for shipment or storage Use a corrugated cardboard shipping carton having a test strength of at least 275 pounds 125 kg and with an inside dimension at least six inches 15 25 cm greater than the instrument dimensions If the instrument is being shipped to a Tektronix Service Center enclose the following information m The owner s address m Name and phone number of a contact person m Type and serial number of the instrument m Reason for returning m Acomplete description of the service required Seal the shipping carton with an industrial stapler or strapping tape Mark the address of the Tektronix Service Center and also your own return address on
100. s as they become available and to give you the benefit of the latest improvements Therefore when ordering parts it is important to include the following information in your order m Part number see Part Number Revision Level below m Instrument type or model number m Instrument serial number m Instrument modification number if applicable TLA Series Digitizing Oscilloscope Modules Service Manual 10 1 Replaceable Parts List Part Number Revision Level Module Servicing 10 2 If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number Tektronix part numbers contain two digits that show the revision level of the part For most parts in this manual you will find the letters XX in place of the revision level number Part Number Revision Level Revision Level May Show as XX A zs 670 7918 03 670 7918 XX When you order parts Tektronix will provide you with the most current part for your product type serial number and modification if applicable At the time of your order Tektronix will determine the part number revision level needed for your product based on the information you provide Modules can be serviced by selecting one of the following three options Contact your local Tektronix service center or representative for repair assistance Module Exchange In some cases you may exchange your modu
101. s fail perform the adjustment procedure as described in the Adjustment Procedures then rerun the performance verification tests Using the Software The DSO software consists of executable software files Use the following steps to start and run the software 1 Allow the instruments to warm up for at least 30 minutes before beginning the procedure 2 Quit all applications including the TLA application 3 Select Start Programs TLA Performance Verification 4 To run the performance verification and adjustment software select the following m For the TLA7Dx and TLA7Ex DSO modules select DSO PV 5 Follow the instructions on the screen to enter the name you want to appear in the User Name field as shown below This name will appear on the Calibration Data Reports 6 The program lists several different modules referred to as DUT Device Under Test Enter the number corresponding to the module type that you want to test then click Enter to continue TLA Series Digitizing Oscilloscope Modules Service Manual 4 9 Performance Verification 4 10 The screen will display an error message if the DUT chosen does not match the installed DUT Click Enter to continue Enter the complete serial number of the DUT for example B010100 Click Enter to continue 10 11 12 13 DUNT Hamer Tequancar facial Hambari Teal Ligln Toct Simos lt brier pyar FEI ma LUT name zl Ve Fifty cha
102. s pass No previous tests required If the logic analyzer application is running quit the application Verify that all of the prerequisites listed previously are met for the procedure Run the performance verification and adjustment software Select TLA dig then select the correct module type and the PV test option Follow the on screen instructions to run the test for the DSO module Verify that this test passes before continuing with any other tests TLA Series Digitizing Oscilloscope Modules Service Manual 4 13 Performance Verification DSO Procedure 2 DC Gain Accuracy This procedure checks the DC gain accuracy of the DSO module SW test name DC GAIN ACCURACY Equipment Voltage reference item 7 required Precision BNC cable item 12 Dual banana to BNC adapter item 6 Capacitor 0 1 uF item 8 Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 3 Power up diagnostics pass INTERNAL_CAL test passes 1 Install the 0 1 uF capacitor across the voltage reference output terminals to reduce noise DSO module CHI Precision BNC cable Voltage reference 0 1 uF Capacitor _ gt I Dual banana to BNC adapter Figure 4 3 Initial setup for the DC gain accuracy test 1 Verify that all of the prerequisites liste
103. secure the Acquisition Board to the front panel Board removal be sure the BNC connectors do not get caught on the probe CAUTION To avoid damage to the plastic probe adapter rings during Acquisition adapter rings during removal 5 Carefully slide the Acquisition Board away from the front panel until the BNC connectors clear the front subpanel Then lift the module from the chassis If necessary remove the plastic probe adapter rings from the BNC connec tors on the attenuator housing The plastic rings often remain in the front panel during Acquisition Board removal Unlock socket J1163 slide the lock tabs away from the attenuator housing Remove the probe interface from J1163 Then carefully slide the probe interface from around each BNC connector on the Acquisition Board TLA Series Digitizing Oscilloscope Modules Service Manual 6 19 Removal and Installation Procedures Remove screws 3 Probe interface Figure 6 8 Probe interface replacement 6 20 TLA Series Digitizing Oscilloscope Modules Service Manual Removal and Installation Procedures Installation Use the following procedure and Figure 6 8 to install the probe interface NOTE Be sure the RF shielding gasket is installed on the BNC connectors before installing the probe interface 1 Install the probe interface over the BNC connectors on the Acquisition Board 2 Carefully bend the probe interface cable
104. ss INTERNAL CAL test passes 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 TLA Series Digitizing Oscilloscope Modules Service Manual 4 21 Performance Verification DSO Procedure 9 This procedure checks the DC accuracy for the internal and external trigger level Main Trigger Accuracy DC coupled of the DSO module SW test name TRIG MAIN ACC Equipment Function generator item 13 required Precision BNC cable item 12 Prerequisites Warm up time 30 minutes The logic analyzer application is not running The performance verification and adjustment software is loaded Test equipment connected as shown in Figure 4 8 Power up diagnostics pass INTERNAL CAL test passes DSO module CHI Precision BNC cable Function generator Figure 4 8 Initial setup for the main trigger accuracy test 1 Verify that all of the prerequisites listed previously are met for the procedure 2 Follow the on screen instructions to run the test for the DSO module 3 Verify that all of the tests pass If a test fails check the Troubleshooting section on page 4 12 4 22 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification DSO Procedure 10 This procedure checks th
105. tates m READY Green on m ACCESSED off Wm ARM D off TRIG D off 4 4 TLA Series Digitizing Oscilloscope Modules Service Manual Performance Verification Next the power on diagnostics are run If any self tests or power on diagnostics fail the instrument will display the Calibration and Diagnostics property sheet Extended Diagnostics Complete the following steps to run the Extended Diagnostics on the DSO module 1 Go to the System menu and select Calibration and Diagnostics 2 Click on the Extended Diagnostics tab Calis aloni and Demp m isea Powardn Diagnostics Estendesi Diegrostos Seif Cambrancm Ted Hama Lat Pank Fallom Aj Modules l Tazi A 700 Suum Fn RTLA TEA Patt TLA 7 4 Dai Une Time Tagger Lines RTLA TET Parr Continous UU E C Unt Fail Kernel T asi Lam mmt Peas Tri Esama P apr MPU Se RAM P rrr Morais RAH Jar DSP Shane Aan Pat 1 Wel Shad RAMO Part Figure 4 2 Calibration and Diagnostics property sheet 3 Select the top level test for the module refer to Figure 4 2 4 Under the Run button select One Time 5 Click the Run button then click OK to run the extended diagnostics When the instrument runs the extended diagnostics all tests with an Unknown test status will change to either a pass or fail result 6 When the extended diagnostics are complete check that all tests for the module have passed Self Cal Self calibra
106. ted to earth 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 marking 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 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 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 TLA Series Digitizing Oscilloscope Modules Service Manual v General Safety Summary vi Symbols and Terms A A Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION
107. tion of printing the file viewing the file on screen or transferring the file to another directory or host computer TLA Series Digitizing Oscilloscope Modules Service Manual 4 11 Performance Verification Field Adjust PV Software Housekeeping Troubleshooting You can print the test data directly from the program Ensure that a printer is connected to your logic analyzer and follow the on screen instructions to print the test results If a printer is not available you can view the test results directly from the screen or you can copy the test results to a different file or folder host computer for future use The performance verification and adjustment software creates data log files dlf files that store program data The dlf files are used by the performance verification and adjustment software to generate the view data and print out options Each dlf file is identified by the product serial number for example B010100 dlf The files are stored in the Tekcats folder under each TLA7xx folder To conserve disk space you must occasionally delete the dlf files If any tests fail use the following steps to troubleshoot the problems 1 Check all test equipment for improper or loose connections 2 Check that all test equipment is powered on and has the proper warm up time 3 Run the tests a second time to verify the failure 4 Iftests continue to fail refer to Table 4 3 to determine the source of the failure T
108. tion is an internal routine that optimizes performance at the current ambient temperature to maximize measurement accuracy No external equipment or user actions are needed to complete the procedure The DSO module saves data generated by the self calibration in nonvolatile memory TLA Series Digitizing Oscilloscope Modules Service Manual 4 5 Performance Verification 4 6 Probe Calibration NOTE Performing the self calibration does not guarantee that all parameters operate within limits Operation within limits is checked by performing the performance verification procedures When to Perform Self Calibration You can run the self calibration at any time during normal operation To maintain measurement accuracy perform the self calibration if any of the following conditions occur m Operating temperature is not within 5 C of the temperature when the self calibration was last performed m Once a week when the vertical input voltage range of 50 mV div or less is used Running the Self Calibration Complete the following steps to run the self calibration 1 Ensure that the instrument has had a 30 minute warmup before attempting the self calibration Disconnect any probes connected to the DSO module Go to the System menu and select Calibration and Diagnostics Select the Self Calibration tab page Select the DSO module muc gRS ot PS Click the Run button to start the self calibration The self calibration ta
109. turned on Approximately five seconds after power on the READY indicator turns on and the remaining indicators may turn off m The green READY LED indicates that the module has passed the power on diagnostics and is ready to communicate with the controller Self Calibration Use the self calibration to calibrate the installed modules Run the self calibration after a minimum of a 30 minute warm up Power On Diagnostics Power on diagnostics check basic functionality of the DSO module at every power on If any failures occur at power on the screen displays the calibration and diagnostics property sheet The power on diagnostics page shows a list of the diagnostic tests with a Pass or Fail indication for each board in the module NOTE If there are no diagnostic failures when you power on the instrument you can display and run the calibration and diagnostics property sheet by selecting Calibration and Diagnostics from the System menu TLA Series Digitizing Oscilloscope Modules Service Manual Troubleshooting Extended Diagnostics The extended diagnostics execute more thorough tests than the power on diagnostics Using the extended diagnostics you can do the following tasks Run test individually or as a group Run tests once or continuous Run tests until a failure occurs While the test are executing the word Running displays adjacent to the test When the tests are complete the tests display either a Pass or Fail indicati
110. uirements Our instruments are supported worldwide by the leading edge design manufacturing and service resources of Tektronix to provide the best possible service The following services can be tailored to fit your requirements for calibration and or repair of the DSO Module Service Agreements If service options are not added to the instrument purchase then service agreements are available on an annual basis to provide calibration services or post warranty repair coverage for the DSO Module Service agreements may be customized to meet special turn around time and or on site requirements Service on Demand Tektronix also offers calibration and repair services on a per incident basis that is available with standard prices for many products Self Service Tektronix supports repair to the replaceable part level by providing for circuit board exchange Use this service to reduce down time for repair by exchanging circuit boards for remanufactured ones Tektronix ships updated and tested exchange boards Each board comes with a 90 day service warranty TLA Series Digitizing Oscilloscope Modules Service Manual Introduction Contacting Tektronix For More Information Contact your local Tektronix service center or sales engineer for more information on any of the Calibration and Repair Services just described Phone Address Web site Sales support Service support Technical support 1 800 833 9200 Tektroni
111. ust replaced Are you qualified and equipped for Repair or replace With power still off measure surface mount open fuse s resistance at probe interface repairs Figure 6 16 Is resistance within limits Repair or replace probe interface Yes Replace the Acquisition Board A2 Figure 6 14 Power supply troubleshooting procedure TLA Series Digitizing Oscilloscope Modules Service Manual 6 31 Troubleshooting Measure resistance on fuses Figure 6 15 Fuse locations for troubleshooting Table 6 5 Power supply fault location table Open fuse F1 12 V power supply F2 5 VD power supply F4 5 2 V power supply Module to replace Processor Board A1 and Acquisition Board A2 Processor Board A1 Processor Board A1 and Acquisition Board A2 F5 12 V power supply Processor Board A1 and Acquisition Board A2 F12 5 V power supply Processor Board A1 and Acquisition Board A2 6 32 TLA Series Digitizing Oscilloscope Modules Service Manual Troubleshooting Approximate Signal resistance to ground Clock 1kW DATA2 5V 20 W 15V 590 W Data 950 W 75V Data2 950 W 5V 15V 150 W 5V 30 W OFFSET Offset 870 W Values shown are typical when using a Fluke 8842A DMM on the 2K scale Allow the meter to stabilize for 10 seconds before reading the measured value Figure 6 16 Probe interface resistan
112. x Inc Department or name if known 14200 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA www tektronix com 1 800 833 9200 select option 1 1 800 833 9200 select option 2 Email techsupport tektronix com 1 800 833 9200 select option 3 1 503 627 2400 6 00 a m 5 00 p m Pacific time This phone number is toll free in North America After office hours please leave a voice mail message Outside North America contact a Tektronix sales office or distributor see the Tektronix web site for a list of offices TLA Series Digitizing Oscilloscope Modules Service Manual xv Introduction xvi TLA Series Digitizing Oscilloscope Modules Service Manual DENEN a Specifications This chapter provides a general description of the DSO module and a list of specifications under Characteristics Tables Product Description The digitizing oscilloscope DSO modules are designed for use with either the benchtop mainframe or portable mainframe Key features are listed below Four standard configurations with full featured 1 M 2 50 Q inputs TLA7D2 and TLA7E2 have four channels TLA7D1 and TLA7E1 have two channels m A maximum realtime digitizing rate up to 5 GSample second with an analog bandwidth up to 1 GHz See Table 1 1 for details Table 1 1 Comparison of product features Product Input channels Maximum sample rate Analog bandwidth TLA 4 5GSample secona iGHz TLA7D2 4 2 5 GSample second 500
113. x Logic Analyzer Family Application Software CD in the CD ROM drive 3 Click the My Computer Icon and double click the CD ROM drive 4 Double click the TLA Performance Verification folder 5 Double click on the Logic Analyzer PV folder and then double click the Disk1 folder 6 Double click the Setup exe icon to begin the installation program 7 Follow the on screen instructions to install the software on the hard disk 8 After the installation is complete go back to the TLA Performance Verification folder on the CD This completes the software installation procedure Removing the Software Use the following procedure to remove the performance verification and adjustment software from the instrument These steps are necessary when you want to upgrade the PV software Open Windows Explorer and then locate and select the C Tekcats folder Go to the File menu and select Delete to delete the folder Repeat steps 1 and 2 to delete the Temptek folder if it exists Select Start Settings Taskbar amp Start Menu Click the Advanced tab followed by the Advanced button Qvo oe Re c de m Open the following directory path under Documents and Settings All Users Start Menu Programs 7 Locate and delete the TLA Performance Verification item TLA Series Digitizing Oscilloscope Modules Service Manual 2 5 Operating Information Operating Information This section provides the information you will need to operate

TEK TLA SERIES Service Manual

Contents

Download Pdf Manuals

Related Search

Related Contents