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TPS2000 Series Digital Storage Oscilloscopes Service Manual

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1. Tools and equipment Example Oscilloscope with 1X 10X and 100X probes Tektronix TDS1000 or TDS2000 series oscilloscope with standard accessory 1X 10X probe P2200 and optional 100X probe P5100 or P5200 DMM 3 5 or greater digit DMM Troubleshooting Tree To isolate a problem to a specific troubleshooting procedure use the trouble shooting tree in Figures 6 9 through 6 12 6 20 TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Turn on power Does screen lighten To Figure 6 11 See boot up screen No Put scope or frequency counter on probe comp A From Figure 6 11 gt Yes gt Replace To Figure 6 10 Acquisition board Front panel N Yes b gt problems Verify LCD connector and cable values Run probe check on each channel Good Replace display voltages or display cable Replace Acquisition board Probe check ok Replace Acquisition board Connect external trigger to probe comp Set trigger source to EXT Press set 50 Figure 6 9 Oscilloscope troubleshooting tree 1 of 4 TPS2000 Series Digital Storage Oscilloscopes Service Manual Trigger Replace indicator ON Acquisition gt To Figure 6 10 6 21 Maintenance O gt Acquisition From Figure 6 9 gt problem To Figure 6 12 Able to run Replace Front Verify IO board
2. Use the 16 mm 5 8 inch deep socket to remove the nuts from the BNC connectors Remove the plastic BNC shells from the BNC connectors Grasp the BNC shell with your fingers and pull up to remove the shell See figure 6 5 Remove the IO board Follow the procedure on page 6 10 Disconnect the display data cable at J201 Remove the six screws that secure the acquisition board to the chassis Use the flat blade screwdriver to pull up on the edge of the board and unseat the connection between the acquisition board and the compact flash board See Figure 6 5 Lift up the acquisition board to unseat the connection between the acquisition board and compact flash board then remove the acquisition board Installation To install the acquisition board refer to Figure 6 5 and follow these steps 1 ME Wr cu Position the acquisition board over the chassis mounting tabs and align the feedthrough connector on the front panel and compact flash boards Push down to seat the connector Install the six screws that attach the acquisition board to the chassis Connect the display data cable at J201 Install the IO board TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance 6 Install the front case screws on the inside of the chassis 7 Install the plastic BNC shells onto the BNC connectors 8 Usethe 16 mm 5 8 inch deep socket and install the BNC nuts onto the BNC connectors Torque the nuts to 40 in lbs
3. TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Display Module You will need a torque limiting Torx T 15 screwdriver and pliers for this procedure Removal To remove the display module refer to Figure 6 7 on page 6 17 and follow these steps 1 Remove the front case Follow the procedure on page 6 11 2 Remove the front panel board Follow the procedure on page 6 16 3 Disconnect the display inverter cable from the backlight inverter board See Figure 6 2 on page 6 10 for the location of the board 4 Remove the four screws that attach the display module to the external chassis Support the display with your hand 5 Position the display so you can disconnect the display data cable See Figure 6 7 CAUTION The display shield is attached to the display module Removing the shield will destroy the attaching gasket LCD inverter module Display data cable Figure 6 7 Removing the display module Installation To install the display module refer to Figure 6 7 and follow these steps 1 Connect the display data cable to the display TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 17 Maintenance Compact Flash Board Keypad Align the display module with the mounting tabs on the front of the chassis Install the four screws that attach the display module to the chassis Connect the display inverter cable to the backlight Inverter board Install the front panel
4. From Figure 6 9 front panel Panel or Nu voltages tests Acquisition board gt Run front panel From Figure 6 11 tests in service menu 10 board Disconnect IO voltages OK board Verify power Replace supply Voltages Acquisition Replace board Acquisition board lt 5 key problem Power jc supplies OK Replace Front Panel board Replace Acquisition board Figure 6 10 Oscilloscope troubleshooting tree 2 of 4 6 22 TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance To Figure 6 9 A lt From Figure 6 9 Power cord Attach power attached cord Reinstall case Open case From Figure 6 10 Verify IO board E voltages Attach backlight cable Using a high voltage 100X probe test voltages on backlight connectors Replace display Replace LCD Backlight board Detach display Figure 6 11 Oscilloscope troubleshooting tree 3 of 4 TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 23 Maintenance Battery charging From Figure 6 10 E ce problem Verify memory Replace Exchange IO function with CF Acquisition boy card board Instrument no problem Replace Compact Flash board Memory function Problem fixed Replace Acquisition board Figure 6 12 Oscilloscope troubleshooting tree 4 of 4 6 24 TPS2000 Series Digital Storage Oscilloscopes Servic
5. now Service You may now begin executing the sequence of calibration steps required by your oscilloscope and shown below After the adjustment is complete disable the Service menu by pushing the UTILITY front panel button and the Service and Service Mode Off option buttons TPS2000 Series Digital Storage Oscilloscopes Service Manual Adjustment Procedures DC voltage setup 1 Two Channel Four Channel Digitizing oscilloscope Digitizing oscilloscope DC voltage source ooooo O Pd s 5055098 ee es 05 50 00 el e en SU 39 0 p n COE FOO OOO O 0 0 O Dual banana to BNC adapter 10 inch 10 inch 10 inch A BNC cables BNC cables 10 inch BNC cable BNC T connectors BNC cable BNC T connector A BNC cable BNC T connector 10 inch BNC cable DC voltage setup 2 Two Channel Digitizing oscilloscope DC voltage source O ai 2000 O DI Sab 0 2000000 0 Dual banana to BNC adapter BNC cable Sine wave generator setup Edge setup Two Channel Four Channel Leveled sine Digitizing oscilloscope Square wave Digitizing oscilloscope wave generator owes generator gesso UL S o 00000 SOS ESO POL Q Output O Output j QOooqJg p 140000 50 Q feedthrough terminator
6. oscilloscope If the oscilloscope is a TPS2012 or a TPS2014 the oscilloscope has a bandwidth limit of 100 MHz If the oscilloscope is a TPS2024 the bandwidth limit is 200 MHz 12 If any step in the procedure fails the procedure terminates Failure will result if an incorrect signal source is connected If this happens you must start the procedure over from the beginning If the procedure completes successfully a Pass message is displayed and the new adjustment takes effect Compensate the signal path by performing the self calibration routine Disconnect any probes or cables from the channel input connectors Then press the UTILITY button and select Do Self Cal to confirm that you are ready to proceed TPS2000 Series Digital Storage Oscilloscopes Service Manual Adjustment Procedures 13 Disable the Service menu option by pushing the UTILITY front panel button and the Service and Service Mode Off option buttons Table 5 2 Adjustment steps Step Step Two channel Four channel models models Signal source setting Input Refer to the DC voltage setup 1 diagram wo e wo e DC Voltage 1 TPS2000 Series Digital Storage Oscilloscopes Service Manual 9 5 Adjustment Procedures Table 5 2 Adjustment steps Cont Step Step Two channel Four channel models models Refer to the DC voltage setup 2 diagram s T E T s s Signal source setting Input 12 5 V Refer t
7. 0 0 cece cece ee eee eee ee 3 5 BEDS core E ANDO ec Sage Oia MU Ae Dee hte 3 5 Internal Peripherals ces ARE ER NE eus 3 5 External Peripherals soseri iii Re ELEME aa a 3 5 Performance Verification Equipment Required o o ooooooccoccncoocoororco nee 4 1 Test Record eere eU NE ENSE A epa I RE Yi 4 2 Performance Verification Procedures oooooooooooooooomoooooo 4 3 TPS2000 Series Digital Storage Oscilloscopes Service Manual i Table of Contents DEL Test an teretes aD ees dana 4 3 Self Calibration 2 2 seve tis a ne 4 3 Check DC Gain Accuracy LL 4 3 Check Bandwidth i is ene rede ranieri 4 5 Check Sample Rate and Delay Time Accuracy 4 6 Check Edge Trigger Sensitivity LL 4 7 Check External Edge Trigger Sensitivity 0 0 0 00000 4 8 Adjustment Procedures Required Equipment iore ERR RU En Rr RE E ER ERE HRS 5 1 Adjustment Procedure use rece eR io 5 2 Enable the Service MENU soe occ Le i ry 5 2 Adjustment Procedure i ccc eee t E e I rp rb rer 5 4 Maintenance Preparation Aue Da idee nil eade 6 1 Preventing ES Dirie odo e EA de ERO RUSO A edi e ST EIE eas 6 1 Inspection and Cleaning seeeeeeeeeeee ee 6 2 General Caren o deni A edd pit Lt pe 6 2 Inspection and Cleaning Procedures o oooooooocococoono momo 6 2 Removal and Installation Procedures LL 6 5 Preparation e ee EEE NAS 6 5 Listor Modules uns ES o A ne 6 5 Replacement Pro
8. Directives 2002 96 EC and 2006 66 EC on waste electrical and electronic equipment WEEE and batteries For information about recycling options check the Support Service section of the Tektronix Web site www tektronix com Battery Recycling This product contains a lithium ion Li ion rechargeable battery which must be recycled or disposed of properly m Lithium Ion batteries are subject to disposal and recycling regulations that vary by country and region Always check and follow your applicable regulations before disposing of any battery Contact Rechargeable Battery Recycling Corporation www rbrc org for U S A and Canada or your local battery recycling organization m Many countries prohibit the disposal of waste electronic equipment in standard waste receptacles m Place only discharged batteries in a battery collection container Use electrical tape or other approved covering over the battery connection points to prevent short circuits Mercury Notification This product uses an LCD backlight lamp that contains mercury Disposal may be regulated due to environmental considerations Please contact your local authorities or within the United States refer to the E cycling Central Web page www eiae org for disposal or recycling information TPS2000 Series Digital Storage Oscilloscopes Service Manual xiii Environmental Considerations Transporting Batteries The capacity of the lithium ion rechargeable battery pack in this
9. Open the battery door and remove the batteries Place the oscilloscope face down on a soft surface such as an anti static mat Remove the five screws that secure the rear case to the chassis Tilt the handle to gain better access to the top two screws Lift up and remove the rear case from the oscilloscope chassis Installation Refer to Figure 6 1 and follow these procedure to reinstall the rear case 1 Place the oscilloscope face down on a soft surface 2 Ensure that all cables are routed within the internal chassis area 3 Place the rear case over the assembled oscilloscope and ensure that m All edges align with the chassis m The RS 232 printer and power connectors align and feed through the rear case without binding 4 Install the five screws to secure the rear case Tilt the handle to better access the top two holes 5 Install the batteries case An easy way to avoid this is to slip the screw into the hole and using slight CAUTION Avoid cross threading the screws that attach the rear case to the front pressure slowly rotate the screw counterclockwise until you feel the screw slip into the screw threads Then tighten the screw clockwise A properly started screw will have very little resistance going in TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 7 Maintenance 4 Rear case screws 5 Figure 6 1 Removing and installing the rear case TPS2000
10. Refer to the chapter Performance Verification to verify the specifications Required Equipment The equipment described in Table 5 1 or a suitable equivalent is required to complete the procedure Table 5 1 Required equipment DC Voltage Source 20 V to 20 V 0 1 Wavetek 9100 Universal Calibration accuracy System with Oscilloscope Calibration Module Option 250 Fluke 5500A Multi product BNC connectors Leveled Sine Wave 60 kHz and 200 MHz 0 696 i h i Generator amplitude accuracy Calibrator with Oscilloscope Calibration Option Option 5500A SC 50 Q BNC Cable BNC male to BNC male Tektronix part number 012 0482 00 1m 36 in long 50 Q BNC Cable two BNC male to BNC male Tektronix part number 012 0208 00 25 cm 10 in long 50 2 Feedthrough BNC male and female Tektronix part number 011 0049 01 Termination connectors Dual Banana to BNC Banana plugs to BNC female Tektronix part number 103 0090 00 Adapter BNC T One male and two female Tektronix part number 103 0030 00 TPS2000 Series Digital Storage Oscilloscopes Service Manual 5 1 Adjustment Procedures Adjustment Procedure Enable the Service Menu 5 2 The adjustment procedure consists of multiple steps for the two channel oscilloscope and additional steps for the four channel model Each step requires an external voltage source for new calibration constants Before performing the adjustment procedure you must warm up the oscilloscope for at
11. Series Digital Storage Oscilloscopes Service Manual iii Table of Contents List of Figures Figure 3 1 TPS2000 Series module level block diagram remove CH3 and CHA for a 2 channel version Figure 5 1 Adjustment setups 0 cece eee e cere eees Figure 6 1 Removing and installing the rear case Figure 6 2 Modules accessed from the rear of the oscilloscope Figure 6 3 Removing the BNC cover shell and retaining nuts Figure 6 4 Removing the front case Letti Figure 6 5 Using a screwdriver to remove the Acquisition board Figure 6 6 Removing the front panel module Figure 6 7 Removing the display module Figure 6 8 Removing and installing the keypad Figure 6 9 Oscilloscope troubleshooting tree 1 of 4 Figure 6 10 Oscilloscope troubleshooting tree 2 of 4 Figure 6 11 Oscilloscope troubleshooting tree 3 of 4 Figure 6 12 Oscilloscope troubleshooting tree 4 of 4 Figure 7 1 TPS2000 Series block diagram Figure 8 1 Exploded view diagram e eeeee Figure 8 2 Replaceable accessories o ooooooomomomm2o o 6 10 6 11 6 13 6 15 6 16 6 17 6 19 6 21 6 22 6 23 6 24 TPS2000 Series Digital Storage Oscilloscopes Service Manual Table of Contents List of Tables Table 1 1 Oscilloscope general characterist
12. This internal procedure is automatically performed every time the oscilloscope is powered on No test equipment or hookups are required Verify that no error messages are displayed before continuing with this procedure Self Calibration The self calibration routine lets you quickly optimize the oscilloscope signal path for maximum measurement accuracy You can run the routine at any time but you should always run the routine if the ambient temperature changes by 5 C or more 1 Remove signals from all channels 2 Press the UTILITY button and select the Do Self Cal option to start the calibration This routine can take up to five minutes to complete 3 Verify that self calibration passed Check DC Gain Accuracy This test checks the DC gain accuracy of all input channels 1 Set the DC voltage source output level to 0 V 2 Setup the oscilloscope using the following steps Press menu button Select menu option Select setting 1 DEFAULT SETUP 2 CH 1 or whatever channel Voltage Probe 1X is currently being tested TPS2000 Series Digital Storage Oscilloscopes Service Manual 4 3 Performance Verification 4 4 Press menu button Select menu option Select setting 4 MEASURE An unchecked channel Mean 3 As shown below connect the oscilloscope channel selected in the table to the DC voltage source DC voltage Digitizing oscilloscope source 05
13. board exce e ts PS Install the front case You will need a torque limiting Torx T 15 screwdriver for this procedure Removal To remove the compact flash board perform the follow these steps Refer to Figure 6 4 on page 6 13 for the board location 1 Remove the acquisition board Follow the procedure on page 6 14 2 Remove the two screws below the IO board mounting bracket that attach the compact flash board to the internal chassis See Figure 6 2 on page 6 10 for the IO board location 3 Remove the single screw below the display module that attaches the compact flash board to the external chassis 4 Remove the compact flash board Installation To install a new compact flash board follow these steps l Align the compact flash board with the mounting bracket on the front of the chassis and the mounting posts on the inside of the chassis 2 Install the screws the attach the compact board to the chassis 3 Reinstall the acquisition board You will need a torque limiting Torx T 15 screwdriver and 16 mm 5 8 inch deep socket for this procedure Removal To remove the switch keypad refer to Figure 6 8 on page 6 19 and follow these steps 1 Follow the procedure on page 6 11 to remove the front case 2 Liftthe keypad out of the front case CAUTION Keep the electrical contacts on the back of the keypad clean Skin oils and dust will inhibit good electrical contact TPS2000 Series Digital Storage Oscillos
14. on the P2200 probe and connect the probe to channel 1 on the oscilloscope To do this align the slot in the probe connector with the key on the CH1 BNC push to connect and twist to the right to lock the probe in RIO place OO o as Connect the probe tip and reference lead to the PROBE COMP terminals 3 Push the AUTOSET button Within a few seconds you should see a square wave in the display approximately 5 V at 1 kHz peak to peak Push the CH 1 MENU button twice to remove channel 1 push the CH 2 MENU button to display channel 2 repeat steps 2 and 3 above For 4 channel models repeat for CH 3 and CH 4 TPS2000 Series Digital Storage Oscilloscopes Service Manual 2 3 Operating Information Self Calibration The self calibration routine lets you quickly optimize the oscilloscope signal path for maximum measurement accuracy You can run the routine at any time but you should always run the routine if the ambient temperature changes by 5 C or more To compensate the signal path disconnect any probes or cables from the channel input connectors Then press the UTILITY button and select the Do Self Cal option Follow the on screen instructions to proceed Default Setup Check the TPS2000 User Manual for the state of the oscilloscope after you press DEFAULT SETUP 2 4 TPS2000 Series Digital Storage Oscilloscopes Service Manual d Theory of Operation AA Theory of Operation This section describes the electr
15. 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 aviod electrical shock do not touch conductive parts TPS2000 Series Digital Storage Oscilloscopes Service Manual xi Service Safety Summary xii TPS2000 Series Digital Storage Oscilloscopes Service Manual BS 4a E NE ZE AAP Environmental Considerations Product End of Life Handling This section provides information about the environmental impact of the product Observe the following guidelines when recycling an instrument or component Equipment Recycling Production of this equipment required the extraction and use of natural resources The equipment may contain substances that could be harmful to the environment or human health if improperly handled at the product s end of life In order to avoid release of such substances into the environment and to reduce the use of natural resources we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately This symbol indicates that this product complies with the applicable European Union requirements according to
16. product is under 100 Wh The lithium equivalent content as defined by the UN Manual of Tests and Criteria Part III Section 38 3 is under 8 g per pack and 1 5 g per individual cell m Always check all applicable local national and international regulations before transporting a Lithium Ion battery m Transporting an end of life damaged or recalled battery may in certain cases be specifically limited or prohibited Restriction of Hazardous This product has been classified as Monitoring and Control equipment and is Substances outside the scope of the 2002 95 EC RoHS Directive xiv TPS2000 Series Digital Storage Oscilloscopes Service Manual Preface Related Manuals This service manual for the TPS2000 Series Digital Storage Oscilloscopes provides instructions to verify the performance of calibrate troubleshoot and repair the oscilloscopes to the module level Unless noted otherwise the term oscilloscope refers to all of the models in the TPS2000 series These manuals contain additional documentation for the oscilloscopes User manual Language part number English 071 1441 XX French 071 1442 XX Italian 071 1443 XX German 071 1444 XX Spanish 071 1445 XX Japanese 071 1446 XX Portuguese 071 1447 XX Simplified Chinese 071 1448 XX Traditional Chinese 071 1449 XX Korean 071 1450 XX Russian 071 1451 XX Programmer manual part number 071 1075 XX These manuals con
17. 00 Series Digital Storage Oscilloscopes Service Manual AS AE General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures To Avoid Fire or Use Proper Power Cord Use only the power cord specified for this product and Personal Injury 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 Connect and Disconnect Properly Connect the probe output to the measurement instrument before connecting the probe to the circuit under test Connect the probe reference lead to the circuit under test before connecting the probe input Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement instrument Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Do not apply a potential to any terminal including the common terminal that exceeds the maximum rating of that terminal Power Disconnect The power cord disconnects the product from the power source Do not block the power cord it must remain accessib
18. 3 24 in Depth 129 5 mm 5 10 in Weight approximate Instrument only 2 7 kg 6 0 lbs 1 battery installed 3 2 kg 7 0 lbs 2 batteries installed 3 7 kg 8 0 lbs Table 1 4 Power source characteristics Source Voltage of the AC Adapter Power Consumption 90 to 264 VAC ms from 45 Hz through 66 Hz Instrument only 30 watts max AC input to AC adapter 36 watts TPS2000 Series Digital Storage Oscilloscopes Service Manual 1 7 Specifications Table 1 5 Oscilloscope environmental characteristics Temperature Operating Nonoperating 0 C to 50 C 32 F to 122 F 40 C to 71 C 40 F to 159 8 F Humidity Operating Nonoperating High 50 C 122 F 60 RH 55 C to 71 C 131 F to 160 F 60 RH Low 30 C 86 F 90 RH 0 C to 30 C 32 F to 86 F lt 90 RH Cooling Method Forced air temperature controlled Altitude Operating and 3 000 m 10 000 ft Nonoperating Random Vibration Operating Nonoperating 0 31 grms from 5 Hz to 500 Hz 10 minutes on 2 46 grms from 5 Hz to 500 Hz 10 minutes on each axis each axis Mechanical Shock 50 g 11 ms half sine operating 1 With one battery pack installed Charge the battery packs within an ambient temperature range of 0 C to 45 C 32 F to 113 F Charging battery packs outside of this range can damage cells or cause them to leak 3 The battery packs are rated to operate between 10 C and 50 C 14 F and 122 F with less than 80
19. 500009 I Ooooono DIO O00 0 A 00000 Dual banana oes D 0000 to BNC T J adapter BNC cable 4 For each VOLTS DIV setting listed below perform the following steps a Set the DC voltage source output level to the positive voltage listed and then record the mean measurement as Vpos b Reverse the polarity of the DC voltage source and then record the mean measurement as Veg c Calculate Vqifr Vpos Vneg and then compare Vir to the accuracy limits in the table VOLTS DIV setting Accuracy limits for V git 5 mV div 33 6 mV to 36 4 mV 200 mV div 1 358 V to 1 442 V 2 V div 13 58 V to 14 42 V 5 Set DC voltage source output level to 0 V 6 Disconnect the test setup 7 Repeat steps 1 through 6 until all input channels have been checked For example check CH1 the first time through and CH2 the next time On a four channel model then test CH3 and CHA TPS2000 Series Digital Storage Oscilloscopes Service Manual Performance Verification Check Bandwidth TPS2000 Series Digital Storage Oscilloscopes Service Manual This test checks the bandwidth of all input channels 1 Set up the oscilloscope using the following steps Press menu button Select menu option Select setting DEFAULT SETUP CH 1 or whatever channel is Voltage Probe 1X currently being tested ACQUIRE Average 16 TRIGGER Coupling Noise MEASURE Source An unchecked channel Type Pk Pk 2 As shown below connect the oscillosc
20. 6 64 and 128 Inputs Input Coupling DC AC or GND Input Impedance DC 1 MQ 2 in parallel with 20 pF 3 pF Coupled Maximum Voltage Between Overvoltage Category Maximum Voltage a and Reference at input CAT and CAT II 300 Vims CAT Ill 150 Vims Derate at 20 dB decade above 100 kHz to 13 V peak AC at 3 MHz and above For nonsinusoidal waveforms peak value must be less than 450 V Excursion above 300 V should be less than 100 ms duration RMS signal level including any DC component removed through AC coupling must be limited to 300 V If these values are exceeded damage to the oscilloscope may result Refer to the Overvoltage Category description on page NO TAG TPS2000 Series Digital Storage Oscilloscopes Service Manual 1 1 Specifications Table 1 1 Oscilloscope general characteristics Cont Inputs Maximum Voltage Between 600 Vims CAT II or 300 Vims CAT III using rated connectors or accessories BNC Reference and Earth Ground Single Channel Common Greater than 1000 1 up to 50 MHz derated to 400 1 at 200 MHz Mode Rejection typical Sine wave with VOLTS DIV setting at 5 mV Signal applied between the channel signal and signal reference and chassis Ratio of the acquired signal amplitude to the amplitude of the signal Channel to Channel Crosstalk TPS2012 and TPS2014 TPS2024 50 MHz 2100 1 100 MHz 2100 1 Measured on one channel with test signal applied between signal and common of the other channel and w
21. 6 00 1 LABEL 2 CH LANGUAGE KOREAN 335 1117 00 1 LABEL 2 CH LANGUAGE RUSSIAN 335 1118 00 1 LABEL 4 CH LANGUAGE FRENCH 335 1119 00 1 LABEL 4 CH LANGUAGE ITALIAN 335 1120 00 1 LABEL 4 CH LANGUAGE GERMAN 335 1121 00 1 LABEL 4 CH LANGUAGE SPANISH 335 1122 00 1 LABEL 4 CH LANGUAGE JAPANESE 335 1123 00 1 LABEL 4 CH LANGUAGE PORTUGUESE 335 1124 00 1 LABEL 4 CH LANGUAGE CHINESE SIMPLIFIED 335 1125 00 1 LABEL 4 CH LANGUAGE CHINESE TRADITIONAL 335 1126 00 1 LABEL 4 CH LANGUAGE KOREAN 335 1127 00 1 LABEL 4 CH LANGUAGE RUSSIAN 37 200 4845 00 1 COVER FRONT PROTECTIVE 8 4 TPS2000 Series Digital Storage Oscilloscopes Service Manual Replaceable Parts r Figure 8 1 Exploded view diagram 8 5 TPS2000 Series Digital Storage Oscilloscopes Service Manual Replaceable Parts Replaceable Accessories Tables 8 3 and 8 4 list the TPS2000 Series oscilloscope replaceable accessories Some accessories are not shown in Figure 8 1 Some replaceable accessories are shown in Figure 8 2 Table 8 3 Replaceable standard accessories Description of accessory Passive 1X 10X probes Tektronix part number or nomenclature P2220 Instrument user manuals English 071 1441 XX French 071 1442 XX Italian 071 1443 XX German 071 1444 XX Spanish 071 1445 XX Japanese 071 1446 XX Portuguese 071 1447 XX Simplified Chinese 071 1448 XX Traditional Chinese 071 1449 XX Korean 071 1450 XX Rus
22. 80 kHz LF REJ Same as the DC coupled limits for frequencies above 300 kHz attenuates signals below 300 kHz 1 4 TPS2000 Series Digital Storage Oscilloscopes Service Manual Specifications Table 1 1 Oscilloscope general characteristics Cont Trigger Trigger Level Range Trigger Level Accuracy typical SET LEVEL TO 50 typical Default Settings Video Trigger Sensitivity Video Trigger Type typical Signal Formats and Field Rates Video Trigger Type Holdoff Range Range 8 divisions from center of screen Accuracies are for signals having rise and fall times 220 ns Source Accuracy 0 2 div 5 mV within 4 divisions from center screen 6 of setting 250 mV for signals less than 2 V EXT 5 6 of setting 500 mV for signals less than 10 V EXT 10 6 of setting 1 V for signals less than 20 V Operates with input signals equal to or greater than 50 Hz x Coupling is AC and Auto except for a single sequence acquisition Composite video signal Source Range Pk pk amplitude of 2 divisions 1V EXT 5 5 V EXT 10 10 V x Supports NTSC PAL and SECAM broadcast systems for any field or any line 500 ns to 10 s 1 Available only on 4 channel oscilloscopes TPS2000 Series Digital Storage Oscilloscopes Service Manual 1 5 Specifications Table 1 1 Oscilloscope general characteristics Cont Pulse Width Trigger Pulse Width Trigger modes Pulse Width Trigger Point
23. C CAT Il Between Tip Signal and 150 Vims CAT III or 150 V DC CAT III Earth Ground 420 V peak 5096 DF 1 s PW 670 V peak 2096 DF 1 s PW 1X position 150 Vims CAT II or 150 V DC CAT Il 100 Vims CAT III or 100 V DC CAT III 210 V peak 5096 DF 1 s PW 330 V peak lt 20 DF 1 s PW Maximum Voltage Between 30 Vims Reference Lead and Earth Ground 1 As defined in IEC61010 1 2001 See certifications and compliances on page NO TAG 2 Thefloat voltage must be subtracted from the tip to earth ground voltage For example if the reference lead is floated to 30 Vims the tip voltage to the reference lead is limited to 270 Vims TPS2000 Series Digital Storage Oscilloscopes Service Manual 1 9 Specifications Table 1 7 P2220 Probe certifications and compliances EC Declaration of Conformity Overvoltage Category Pollution Degree Safety Compliance was demonstrated to the following specification as listed in the Official Journal of the European Communities Low Voltage Directive 73 23 EEC as amended by 93 68 EEC EN 61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use EN 61010 2 031 2003 Particular requirements for hand held probe assemblies for electrical measurement and test Category Examples of Products in this Category CAT III Distribution level mains fixed installation CAT Il Local level mains appliances portable equipment CAT I Signal level
24. Detect Response Captures 5096 or greater amplitude of pulses 212 ns wide typical 50 s div to 5 us div in the center 8 vertical divisions DC Gain Accuracy 3 for Sample or Average acquisition mode 5 V div to 10 mV div 4 for Sample or Average acquisition mode 5 mV div and 2 mV div DC Measurement Measurement Type Accuracy Accuracy Average Acquisition average of 216 wave 3 x reading 0 1 div 1 mV when 10 mV div or greater is forms with vertical posi selected tion at zero Mode Average of 216 wave 3 x reading vertical position 1 of vertical position 0 2 forms with vertical posi div tion not at UTERE Add 2 mV for settings from 2 mV div to 200 mV div Add 50 mV for settings from gt 200 mV div to 5 V div Volts Measurement Repeat Delta volts between any 396 x reading 0 05 div ability Average Acquisition two averages of 216 Mode waveforms acquired under same setup and ambient conditions 1 For5 mV div the vertical scale setting bandwidth specification is typical Theoscilloscope reverts to Sample mode when the SEC DIV horizontal scale is set from 2 5 us div to 5 ns div on 100 MHz models or from 2 5 ps div to 2 5 ns div on a TPS2024 model The Sample mode can still capture 12ns glitches TPS2000 Series Digital Storage Oscilloscopes Service Manual 1 3 Specifications Table 1 1 Oscilloscope general characteristics Cont Horizontal Sample Rate Range TPS2012 an
25. Generator 50 Ohm BWL 2 5 Vp p BWL 5 Vp p 5 7 Adjustment Procedures Table 5 2 Adjustment steps Cont Step Two channel models NA 5 8 Step Four channel models Signal source setting Sine Wave Generator 50 Ohm 69 Snewa Generac 50 00m BWL tomi Sine Ware Generi 00mm ewL 0mp a Sine Ware Generator 50 00m 5H 2559 e Sine Wave Generi 50 On 50M 25Vpp so jo Sine Wave Generator 50 Ohm 20 MHz 2 5 Vp p Sine Wave Generator 50 Ohm BWL 2 5 Vp p Sine Wave Generator 50 Ohm BWL 5 Vp p Sine Wave Generator 50 Ohm BWL 1 6 Vp p Edge 50 Ohm Refer to Edge setup 1 kHz 0 to 800 mV fast rising edge diagram TPS2000 Series Digital Storage Oscilloscopes Service Manual Input CH3 Adjustment Procedures Table 5 2 Adjustment steps Cont Step Step Two channel Four channel models models NA 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 TPS2000 Series Digital Storage Oscilloscopes Service Manual Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Signal source setting Input 5 kHz 1 Vp p CH4 1 MHz 100 mV 1 MHz 1 Vp p 50 kHz 1 2 Vp p 20 MHz 1 2 Vp p Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generato
26. Ifa battery pack is leaking fluids do not touch any fluids Properly dispose of a leaking battery pack see Disposal and Recycling in this document contact with battery fluids do not rub eyes Immediately flush eyes thoroughly with water for at least 15 minutes lifting upper and lower lids until no evidence of the fluid remains Seek medical attention WARNING Eye contact with battery fluids can damage the eye In case of eye Transportation See Environmental Considerations on page xiii Disposal and Recycling See Environmental Considerations on page xiii TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 29 Maintenance 6 30 TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Repackaging Instructions Use these procedures to repackage the oscilloscope for shipment or storage shipping and store the batteries in an approved area Failure to do so can cause CAUTION Remove rechargeable battery packs from the instrument before damage to the oscilloscope See page 6 31 Lithium Ion Battery Maintenance Packaging To ship the instrument for repair use the original packaging container if possible If the container is unfit for use or not available repackage the instrument as follows m Use a corrugated cardboard shipping carton having a test strength of at least 125 kg 275 pounds m The shipping carton should have an inside dimension at least 15 25 cm six inches g
27. MOLDED METALIZED CASE FRONT 4CH OVERMOLDED METALIZED FOOT FRONT SANTOPRENE BLACK 64 DEROMETER TEXTURED REPLACEMENT KIT BNC SHELL KNOB CAP PC ABS BAYBLEND FR110 SILVER GRAY 0 650 DIA X 0 520 H TPS2000 Series Digital Storage Oscilloscopes Service Manual 8 3 Replaceable Parts Table 8 2 Replaceable parts list cont Fig amp index Tektronix part Serialno Serial no number number effective discon d Qty Name amp description 29 366 0772 00 6 KNOB CAP PC ABS BAYBLEND FR110 SIVER GRAY 0 425 DIA X 0 520 H 30 200 4860 00 1 COVER BNC DOOR 2 CHANNEL 200 4846 00 1 COVER BNC DOOR 4 CHANNEL 31 335 1137 00 1 2 CH FRONT PANEL COLOR 335 1138 00 1 4 CH FRONT PANEL COLOR 32 TPS2PWR1 1 POWER APPLICATION SOFTWARE MODULE 33 156 9413 00 1 IC MEMORY CMOS FLASH 32MB OR MORE MEMORY MODULE COMPACT FLASH CF TYPE 1 SDCFB16 101 00 50 PIN MODULE 1EAA0 CT8MBC1 MD 34 366 0845 00 1 PUSH BUTTON POWER PC ABS BAYBLEND FR110 SILVER 35 335 1131 00 1 BEZEL TPS2012 100MHZ 335 1132 00 1 BEZEL TPS2014 100MHZ 335 1133 00 1 BEZEL TPS2024 200MHZ 36 335 1108 00 1 LABEL 2 CH LANGUAGE FRENCH 335 1109 00 1 LABEL 2 CH LANGUAGE ITALIAN 335 1110 00 1 LABEL 2 CH LANGUAGE GERMAN 335 1111 00 1 LABEL 2 CH LANGUAGE SPANISH 335 1112 00 1 LABEL 2 CH LANGUAGE JAPANESE 335 1113 00 1 LABEL 2 CH LANGUAGE PORTUGUESE 335 1114 00 1 LABEL 2 CH LANGUAGE CHINESE SIMPLIFIED 335 1115 00 1 LABEL 2 CH LANGUAGE CHINESE TRADITIONAL 335 111
28. PONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES pe A Table of Contents General Safety Summary cece ccc cec cece eeceecees vii Service Safety Summary cece cece reece eee eee nenne xi Environmental Considerations ccc eee e reece eeee xiii PACA Ce Keg a a Xv Related Manuals oe ae to aa aan Xv Specifications Specifications ce temer irn e ek rie seine 1 1 Operating Information General Features es dm Fere eb are u 2 1 Attach Reference Leads Correctly o oooooooooconomooomomommm ooo 2 2 Functional Check ur e ea a BE Ra 2 3 Self Calibration iii a re EE S ees 2 4 Default Setup lt a een oleae as E Ss 2 4 Theory of Operation Acquisition Board LL 3 2 Acquisition System ics eese ae ee e A RR NE etae a 3 2 Processing and Display System 0 0 0 ccc eee eee eee 3 3 Probe Compensation 0 0 ccc cece ee eee ee eee eee 3 3 Acquisition Board Power 3 3 Power Supply and Battery System 3 4 Display Module es rere ES A RR nun 3 4 Eront Panel nn ep toot dc ste ue Sc 3 4 Two Channel Oscilloscopes 0 ccc e 3 4 Four Channel Oscilloscopes
29. Pulse Width Range Pulse Width Resolution Equal Guard Band Not Equal Guard Band Trigger Frequency Counter Readout Resolution Accuracy typical Frequency Range Signal Source 1 6 Trigger when lt Less than gt Greater than Equal or Not Equal Positive pulse or Negative pulse Equal The oscilloscope triggers when the trailing edge of the pulse crosses the trigger level Not Equal If the pulse is narrower than the specified width the trigger point is the trailing edge Otherwise the oscilloscope triggers when a pulse continues longer than the time specified as the Pulse Width Less than The trigger point is the trailing edge Greater than also called time out trigger The oscilloscope triggers when a pulse continues longer than the time specified as the Pulse Width Selectable from 33 ns to 10 s 16 5 ns or 1 part per thousand whichever is larger t gt 330 ns 5 guard band lt 5 196 16 5 ns t lt 330 ns guard band 16 5 ns t gt 330 ns 5 guard band lt 5 1 16 5 ns 165 ns t 330 ns guard band 16 5 ns 33 ns t 165 ns guard band 16 5 ns 6 digits 51 ppm including all frequency reference errors and 1 count errors AC coupled 10 Hz minimum to rated bandwidth Pulse Width Edge Trigger all available trigger sources Frequency Counter measures trigger source at all times including when the oscilloscope acquisition is halted due to changes in the run status o
30. Series Digital Storage Oscilloscopes Service Manual 6 8 Maintenance Fan You will need the pliers for this procedure Removal To remove the fan refer to Figure 6 2 on page 6 10 and follow these steps 1 2 3 4 Remove the rear case Follow the procedure on page 6 7 Disconnect the fan cable from the IO board Use the pliers to bend the two fan bracket tabs out of the way Remove the fan Installation To install a new fan refer to Figure 6 2 and follow these steps 1 2 3 4 Align the fan bracket with the fan Align the fan so that air blows out the side of the chassis not into the chassis Use the pliers to bend the two fan bracket tabs into place and secure the fan Install the fan cable on the IO board Install the rear case Backlight Inverter Board You will need the pliers for this procedure Removal To remove the backlight inverter board refer to Figure 6 2 on page 6 10 and follow these steps 1 pe gt 5 Remove the rear case Follow the procedure on page 6 7 Disconnect the display inverter cable from the IO board Disconnect the LCD inverter cable from the backlight inverter board Use the pliers to bend the two chassis mounting tabs out of the way Remove the board Installation To install a new backlight inverter board refer to Figure 6 2 and follow these steps 1 2 3 4 5 Align the backlight inverter board with the chassis mounting tabs Use the pliers to b
31. Service Manual Tektronix Y TPS2000 Series Digital Storage Oscilloscopes 077 0306 00 This document supports firmware version 10 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 O Tektronix All rights reserved Licensed software products are owned by Tektronix or its subsidiaries or suppliers and are protected by national copyright laws and international treaty provisions Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektronix Inc Contacting Tektronix Tektronix Inc 14200 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA For product information sales service and technical support m In North America call 1 800 833 9200 m Worldwide visit www tektronix com to find contacts in your area Warranty 16 TPS2000 Series Oscilloscopes Tektronix warrants that the product will be free from defects in materials and workmanship for a period of three 3 years from the date of original purchase from an authorized Tektronix distributor If the product proves defective during this w
32. Spanish 071 1456 XX Japanese 071 1457 XX Portuguese 071 1458 XX Simplified Chinese 071 1459 XX Traditional Chinese 071 1460 XX Korean 071 1461 XX Russian 071 1462 XX Software OpenChoice 020 2514 XX 343 1689 00 Figure 8 2 Replaceable accessories TPS2000 Series Digital Storage Oscilloscopes Service Manual
33. Table 5 2 and 5 3 list proper channel 50 2 feedthrough terminator Table 5 2 and 5 3 list proper channel BNC cable BNC cable Figure 5 1 Adjustment setups TPS2000 Series Digital Storage Oscilloscopes Service Manual 5 3 Adjustment Procedures 5 4 Adjustment Procedure Use this procedure to load new calibration constants 1 2 3 4 5 e 10 11 Enable the Service menu as described on page 5 2 Push the Service option button Push the Factory Cal option button Push the Warmup Timer option button Push the Start Timer option button to ensure a 10 minute warm up After 10 minutes passes the oscilloscope displays a large black or green cross Press the front panel UTILITY button and push the Service option button Push the Factory Cal option button Push the FCAL INIT option button to initiate the factory calibration routine You are now in step 1 of the procedure As indicated by Step 1 in Table 5 2 connect a 0 0 Vpc source to the channel inputs Press FCAL STEP to load the calibration constant for step 1 Follow the screen prompts along with Table 5 2 for the remainder of the routine applying the proper signal for each step NOTE During some steps the oscilloscope may appear to be idle for several minutes while it is processing information internally You must wait for the screen prompt to continue NOTE In Table 5 2 BWL stands for the bandwidth limit of the particular
34. X 671 5741 XX 657 0137 00 213 1139 00 679 5744 XX 679 5745 XX 650 4349 01 260 2785 00 260 2786 00 202 0416 00 202 0417 00 348 1525 00 050 3598 00 366 0771 00 Serial no effective Serial no discont d Qty Name amp description 1 1 1 m gt oO o CHASSIS 2 CH CHASSIS 4 CH INVERTER BOARD FAN DC TUBEAXIAL 12VDC 170MA 4200 RPM 32 DBA 19 CFM 60 X60 MM X 25MM UL CSA TUV SAFETY CONTROLLED CABLE ASSY DISPLAY INVERTER 28 AWG 6 0 L 1X5 0 049CTR ON OFF SWITCH CABLE ASSEMBLY CKT BD ASSY IO BOARD SCREW MACHINE 6 32 X 0 250 PNH STL ZNPL T 15 CA ASSY SP DATA COLOR 7 0 L ASSEMBLY REAR CASE HANDLE OVERMOLDED FOOT REAR BLACK 0 4 X 0 4 X 0 1 HEIGHT FOOT REAR SANTOPRENE BLACK COVER BATTERY DOOR FOOT FRONT FLIPMPC ABS SILVER GRAY BATTERY LITHIUM ION RECHARGEABLE 11V 6 6AH SMBUS RECESSED TERMINALS SAFETY CONTROLLED COVER ISOLATION BARRIER SCREW PT K35 1 57 PAN HEAD T 15 SHIELD CHANNEL ATTENUATION CKT BD ASSY ACQUISITION BD 2CH TPS2012 CKT BD ASSY ACQUISITION BD 4CH TPS2014 CKT BD ASSY ACQUISITION BD 4CH TPS2024 MODULAR ASSEMBLY COMPACT FLASH ASSEMBLY SCREW TPG TF 2 28 X 0 188 PLASTITE PHILLIPS PNH STL ZN PL CKT BD ASSY FRONT PANEL BD 2CH CKT BD ASSY FRONT PANEL BD 4CH FRAME ASSEMBLY DISPLAY COLOR SWITCH KEYPAD ELASTOMERIC FRONT PANEL PUSHBUTTON 2CH COLOR SWITCH KEYPAD ELASTOMERIC FRONT PANEL PUSHBUTTON 4CH COLOR CASE FRONT 2CH OVER
35. arranty 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 Batteries are excluded from this warranty Parts modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance All replaced parts modules and products become the property of Tektronix In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix shipping charges prepaid and with a copy of customer proof of purchase 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 pro
36. ays CAT II or 300 Vays CAT III or similarly rated passive high voltage probe not the ground referenced P5100 or P5200 probes or an appropriately rated high voltage differential probe when floating the reference lead above 30 Vrms subject to the ratings of such high voltage probe To avoid electric shock when using probes with exposed metal parts do not connect the reference lead to voltages above 30 Vrms TPS2000 Series Digital Storage Oscilloscopes Service Manual Operating Information NOTE You must attach the probe reference lead for each channel directly to your circuit These attachments are required because the oscilloscope channels are electrically isolated they do not share a common connection Use the shortest possible reference lead with each probe to maintain good signal fidelity The probe reference lead presents a higher capacitive load to the circuit under test than the probe tip When taking a floating measurement between two nodes of a circuit attach the probe reference lead to the lowest impedance or least dynamic of the two nodes Functional Check Perform this quick functional check to verify that your oscilloscope is operating correctly 1 Power on the oscilloscope Read the floating measurements warning then push OK Push the DEFAULT T o 0 SETUP button The default Voltage Probe Attenuation option is 10X EE DEFAULT SETUP o button button PROBE COMP 2 Set the switch to 10X
37. ce Lithium Ion rechargeable batteries require routine maintenance and care in their use and handling Read and follow the information in this document to safely use Lithium Ion batteries and achieve the maximum battery life span Key Information Use only Tektronix approved batteries in your Tektronix products Do not leave batteries unused for extended periods of time either in the product or in storage When a battery has not been used for six months check the charge status and charge or dispose of the battery as appropriate The typical estimated life of a Lithium Ion battery is about two to three years or approximately 300 charge cycles whichever occurs first One charge cycle is a period of use from fully charged to fully discharged and fully recharged again Use a two to three year life expectancy for batteries that do not run through complete charge cycles Rechargeable Lithium Ion batteries have a limited life and will gradually lose their capacity to hold a charge This loss of capacity aging is irreversible As the battery loses capacity the length of time it will power the product run time decreases Lithium Ion batteries continue to slowly discharge self discharge when not in use or while in storage Routinely check the battery s charge status Check the latest TPS2000 user manual for information on how to check battery status and for battery charging instructions The latest TPS2000 manuals are available at www tektroni
38. cedures esee 6 5 Tools R quired ome ELEVADO RE RR 6 6 Rear Casen ds aint dese NAO 6 7 PRI a EINEN 6 9 Backlight Inverter Board sees 6 9 IO Boards enuncia he uu sre vidue MEL pe 6 10 Er nt Panel Knob 2 2 3 2222 e de RR RS 6 11 Front Caser eoo ueber sre idee DIM UE pes 6 11 Acquisition Board L ccc cece eee eas 6 14 Fiont Panel Board zi m 3 t ensis Bae 6 16 Display Modules re 3 00 EEE eS 6 17 Compact Flash Board ooooooocoocccncnoncnc cr 6 18 Ka o uae LEE s cie LE eine 6 18 Troubleshooting ode SR O sed RAS 6 20 Adjustment After Repair cesse 6 20 Required Tools and Equipment 0 0 0 ccc cece eee eee 6 20 Troubleshooting Tree eene Ei Ree Rn 6 20 PROBE COMP Output KARERA NEERA nn 6 25 Using the Error Log 2 82 a O IIR e E Rs 6 25 Lithium Ion Battery Maintenance 6 27 Key Informationer aaan A act BEANE A auntie gaa aide Se re 6 27 Repackaging Instructions 0 0 6 cee eee eens 6 31 Packaging itina A nr 6 31 SOTA A M MC E 6 32 Diagrams ii TPS2000 Series Digital Storage Oscilloscopes Service Manual Table of Contents Replaceable Parts Parts Ordering Information 0 0 cece cece eens 8 1 Module Service a 8 1 Using the Replaceable Parts LiSt ooooocoocoroormommm e 8 2 ADDIE VIAHONS i 4 o ose rH ath DANS nda 8 2 Mfr Code to Manufacturer Cross Index 00 0 0 cece eee eee 8 3 Replaceable Accessories licec 8 7 TPS2000
39. ch amplifier ASIC and associated circuits by an isolated switching power supply dedicated to each channel Each acquisition ASIC contains samplers and peak detectors an amplifier an A D converter and the trigger logic The digitized waveform samples are transferred to the processing and display ASIC In four channel systems the two acquisition ASICS are interconnected so that a trigger on one ASIC can produce a trigger on the other The processor system adds the microprocessor and FLASH ROM to the processing and display system The processor system interprets the front panel control changes detected by the display ASIC provides control parameters based upon user setting requests computes waveform measurements and manages the internal and external peripherals Saved setups waveforms and calibration constants are stored in nonvolatile memory NVRAM The processor system shares DRAM with the display system Processing and Display The processing and display system consists of the display ASIC DRAM and System system oscillator Digitized acquisition samples are received by the display ASIC and stored in DRAM Once data are received by the display ASIC various corrections are applied display rasterization is performed and the waveform is placed into a display buffer At the same time the waveform is being read from the display buffers and written to the LCD Additional circuitry in the display ASIC supports scanning of the front panel p
40. ch column in the parts list Table 8 1 Parts list column descriptions Column Column name Description 1 Figure 8 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 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 Abbreviations Abbreviations conform to American National Standard ANSI Y1 1 1972 8 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual Replaceable Parts Table 8 2 Replaceable parts list Fig amp index number 10 1 2 3 16 17 18 19 Tektronix part number 441 2348 00 441 2349 00 119 6930 XX 119 6965 00 174 4949 00 174 4904 00 679 5742 XX 211 1198 00 174 4673 00 650 4665 00 367 0538 00 348 1791 00 348 1704 00 200 4844 00 348 1703 00 146 0150 00 200 4847 00 211 1143 00 337 4305 00 671 5735 XX 671 5919 X
41. copes Service Manual Maintenance Use care to avoid touching the electrical contacts Front case Figure 6 8 Removing and installing the keypad Installation To install the switch keypad refer to Figure 6 8 and follow these steps 1 Place the front case face down on a soft surface 2 Align the switch keypad into the front case using the guide posts and the holes in the keypad CAUTION Keep the electrical contacts on the back of the switch pad clean Skin oils and dust will inhibit good electrical contact 3 Ensure that all buttons are properly seated into place before proceeding 4 Place the entire internal assembly into the front case TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 19 Maintenance Troubleshooting This section contains information and procedures to help you isolate a defective module in the oscilloscope WARNING Before perform this or any other procedure in this manual read the N General Safety Summary and Service Safety Summary found at the beginning of this manual Also to prevent possible injury or damage to electrical components read Preventing ESD on page 6 1 Adjustment After Repair If you replace the acquisition circuit board you must adjust the oscilloscope after repair Refer to the Adjustment Procedures section on page 5 1 Required Tools and You may need the the following tools and equipment to troubleshoot the Equipment oscilloscope
42. d TPS2014 TPS2024 5 S s to 1 GS s 5 S s to 2 GS s Waveform Interpolation sin x x Record Length 2500 samples for each channel SEC DIV Range TPS2012 and TPS2014 TPS2024 5 ns div to 50 s div ina 2 5 ns div to 50 s div in a 1 2 5 5 sequence 1 2 5 5 sequence Sample Rate and Delay 50 ppm over any 1 ms time interval Time Accuracy Delta Time Measurement Conditions Accuracy Accuracy Full Bandwidth Single shot sample 1 sample interval 50 ppm x reading 0 6 ns mode 1 sample interval 50 ppm x reading 0 4 ns Sample interval s div 250 Position Range 2 5 ns div to 10 ns div 4 div x s div to 20 ms 25 ns div to 100 us div 4 div x s div to 50 ms 250 us div to 10 s div 4 div x s div to 50 s 25 s div to 50s div 4 div x s div to 250 s Trigger Trigger Sensitivity Coupling Sensitivity Edge Trigger Type DC CH1 CH2 CH31 CH4 1 div from DC to 10 MHz 1 5 div from 10 MHz to100 MHz 2 div from 100 MHz to 200 MHZ EXT 1 Vp p from 50 Hz to 100 MHz 2 Vp p from 100 MHz to 200 MHZ EXT 5 5X the value of EXT EXT 10 10X the value of EXT 1 Available only on 4 channel oscilloscopes 2 TPS2024 only Trigger Sensitivity Edge Coupling Sensitivity Trigger Type typical Same as DC coupled limits from 50 Hz and above NOISE REJ Reduces the DC coupled trigger sensitivity by 2 times tor greater than 10 mv div to 5 V div HF REJ Same as the DC coupled limit from DC to 7 kHz attenuates signals above
43. duct 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 WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES Warranty 2 P2220 Probe Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product Parts modules and replacement products used by Tektronix for warranty work may be new or reco
44. e Manual Maintenance PROBE COMP Output Using the Error Log When the oscilloscope is on and operating properly the PROBE COMP output should generate a square wave approximately 5 V in amplitude at a 1 KHz frequency Use the oscilloscope and set the Attenuation switch to 10X on the P2100 probe to probe this output As shown in the table below there are two cases of defects Either the 1 kHz signal is on and the IO and Acquisition boards are both active and functionally capable of performing an acquisition or one of those two modules is not performing correctly While a large number of different possible frequencies exist all involve detected failures on the Acquisition or IO boards due to failure Signal at PROBE COMP 1 kHz signal no display Possible problem Troubleshoot the display Non 1 kHz signal Troubleshoot the Acquisition board No signal Troubleshoot the power supply Failures that occur during the power up diagnostics or normal oscilloscope operation place an entry in the error log Accessing the error log The error log list can be accessed anytime by pushing the UTILITY button and then selecting Options Error Log Table 6 4 lists the error codes and probable causes Table 6 4 List of error codes Number ID Description Probable cause 0 Battery Battery 1 alarm Battery hardware failure replace battery If errors 1 Battery Battery 2 alarm persists contact Tektronix 2 Ba
45. end the tabs into place and secure the board Connect the display cable to the backlight inverter board Connect the display inverter cable to the IO board Install the rear case TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 9 Maintenance IO Board To remove the IO board refer to Figure 6 2 on page 6 10 and follow these steps 1 2 3 4 Remove the rear case Follow the procedure on page 6 7 Disconnect all cables from the IO board Remove the three chassis mounting screws from the IO board Unseat the IO board from its connector on the acquisition board and lift up to remove the board Installation To install a new IO board refer to Figure 6 2 and follow these steps 1 Align the connector on the bottom of the IO board with the connector on the acquisition board Press down to seat the connector Install the three IO board mounting screws to attach the board to the support bracket Connect all cables to the IO board Install the rear case is i o I O board screws 3 IO board j Backlight Inverter board Las Acquisition board Display data cable Figure 6 2 Modules accessed from the rear of the oscilloscope TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Front Panel Knob Remove each front panel knob by firmly grasping the knob and pulling it off of the front panel If necessary insert a screw driver between the front panel and knob and l
46. ical operation of the TPS2000 Series oscilloscope to the module level It describes the basic operation of each functional circuit block shown in Figure 3 1 Acquisition Board Isolation LED CH1 Circuit Display Isolation SH Circuit Isolation CH3 Circuit TA CHA Isolation aha Ji Compact Circuit FLASH Card S L_ _ JI EXT Isolation Compact Trig Circuit Flash Board J3_ Application Key j Probe Comp Output J610 IO Board DC Input LCD Backlight Rose ON OFF Switch r a4 r 4 7 Parallel Battery Battery e Pot p va bog L JL 4J Figure 3 1 TPS2000 Series module level block diagram remove CH3 and CHA for a 2 channel version TPS2000 Series Digital Storage Oscilloscopes Service Manual 3 1 Theory of Operation Acquisition Board 3 2 Acquisition System The Acquisition board of the TPS2000 Series four channel oscilloscope is essentially a dual two channel oscilloscope tied together through a common microprocessor and some special interconnects This allows the combining of the display and trigger systems For this reason the focus of the Acquisition board discussion will be on the two channel system with differences noted as necessary At a minimum the Acquisition board contains the following components W Attenuators m ASIC amplifier m Isolation circuit m Digitizer trigger syste
47. ics 1 1 Table 1 2 Oscilloscope display characteristics 1 7 Table 1 3 Oscilloscope physical characteristics 1 7 Table 1 4 Power source characteristics o ooooooomom o 1 7 Table 1 5 Oscilloscope environmental characteristics 1 8 Table 1 6 P2220 Probe specifications ooooooomomo o o 1 9 Table 1 7 P2220 Probe certifications and compliances 1 10 Table 1 8 P2220 Probe environmental characteristics 1 10 Table 2 1 Oscilloscope General features leues 2 1 Table 5 1 Required equipment eene 5 1 Table 5 2 Adjustment steps een 5 5 Table 6 1 Internal inspection checklist o ooooomo o 6 3 Table 6 2 Procedures for module replacement by removing the Fear ease niodo e A ANG E Erst tee ia seine Sa iu 6 6 Table 6 3 Procedures for module replacement by removing the Iront case corse S UCM an essen ao SM RU 6 6 Table 6 4 List of error codes eene 6 25 Table 8 1 Parts list column descriptions o oooomo o 8 2 Table 8 2 Manufacturers cross index eese 8 3 Table 8 3 Replaceable parts list oooooooomommom o 8 4 Table 8 4 Replaceable standard accessories 8 7 Table 8 5 Replaceable optional accessories eee 8 8 TPS2000 Series Digital Storage Oscilloscopes Service Manual V Table of Contents vi TPS20
48. ift up Install the front panel knobs by aligning the keyed knob with the shaft and then press the knob onto the shaft Front Case You will need a torque limiting Torx T 15 screwdriver and 16 mm 5 8 inch deep socket for this procedure Removal To remove the front case refer to Figure 6 4 on page 6 13 and follow these steps 1 Remove the front panel knobs Follow the procedure on page NO TAG 2 Place the oscilloscope with its rear case down on a soft surface such as an anti static mat 3 Remove the BNC cover by prying up on the exposed edge 4 Use the 16 mm 5 8 inch deep socket to remove the nuts from the BNC connectors 5 Remove the plastic BNC shells from the BNC connectors Grasp the BNC shell with your fingers and pull up to remove the shell See figure 6 3 BNC cover Figure 6 3 Removing the BNC cover shell and retaining nuts 6 Follow the procedures on page 6 7 to remove the rear case 7 Remove the four screws from the internal chassis that attach the chassis to the front cover See Figure 6 4 8 Lift the chassis off of the front case TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 11 Maintenance Installation To install the front case refer to Figure 6 4 and follow these steps 1 Place the front case face down on a soft surface 2 Ensure that the switch keypad is aligned and feeds through the front case Follow the procedure on page 6 19 3 Align the power switch BNC co
49. igital Storage Oscilloscopes Service Manual AS AAA Diagrams PSU Diagrams This section describes the electrical operation of the TPS2000 Series oscilloscope using the major circuit blocks Figure 7 1 shows the oscilloscope interconnec tions used in the four channel version QVGA Preamp j Passive Attenuator LCD ADG420 Vanni Probe comp Isolated Plane FISO A2D DSP Peak Detect Raster Preamp Trigger Display Attenuator ADG420 do ADG522 I CLKISDATA Isolated Plane CH3 CH2 Preamp Attenuator ADG420 FISO A2D Venps Peak Detect CLK SDATA l Tager dbi Isolated Plane Raster ADG421 Display CH4 Preamp Power Supply Attenuator ADG522 2 Smart Batteries ADG420 Smart Charger Vanna CLK SDATA k Real time Isolated Plane 1 Clock RS 223 Printer Preamp Compact Trigger e Attenuator Ri ADG420 Figure 7 1 TPS2000 Series block diagram TPS2000 Series Digital Storage Oscilloscopes Service Manual 7 1 Diagrams 7 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual AS AAA Replaceable Parts AS C R X 9 Replaceable Parts This section contains a list of the replaceable modules for the TPS2000 Series oscilloscopes Use this list to identify and order replacement parts Parts Ordering Information Module Servicing Replacement parts are available through your local Tektronix fie
50. imately 50 of capacity before storage m Remove the battery and store it separately from the product m Store the battery at temperatures between 5 C and 20 C 41 F and 68 F m Charge the battery to approximately 50 of capacity at least once every six months NOTE The battery self discharges during storage Higher temperatures above 20 C or 68 F reduce the battery storage life CAUTION If a battery is stored or otherwise unused for an extended period without following these instructions and the battery has no charge remaining when you check it consider it to be damaged Do not attempt to recharge it or to use it Replace it with a new battery Pay attention to the following when handling batteries m Do not disassemble open crush bend deform puncture or shred a battery Do not drop a battery or expose the battery to excessive shock or vibration Do not short circuit a battery or allow metallic or conductive objects to contact the battery terminals Do not dispose of a battery in fire or water m Do not use the battery to power any devices other than the instrument for which it was designed TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance m Keep the battery away from personnel that are not trained to use the instrument m Do not expose a battery to temperatures above 60 C 140 F m Keep the battery away from children m Donotusea damaged battery m
51. ion and cleaning are done as preventive maintenance which when done regularly may prevent malfunctions and enhance reliability Preventive maintenance consists of visually inspecting and cleaning the oscilloscope and using general care when operating it Perform preventive maintenance more often if you operate the oscilloscope in a severe environment A good time to perform preventive maintenance is just before adjustment of the oscilloscope For optimum performance follow these recommendations m Protect the oscilloscope from adverse weather conditions The oscilloscope is not waterproof m Do not store or leave the oscilloscope where the liquid crystal display LCD will be exposed to direct sunlight or high humidity for long periods of time m The front and rear cases help keep dust out of the oscilloscope and must be in place during normal operation m To avoid damage to the oscilloscope or probes do not expose them to any sprays liquids or solvents The accumulation of dirt on internal components can cause them to overheat and fail Dirt also provides an electrical conduction path that could cause an oscillo scope failure especially under high humidity conditions Inspect and clean the oscilloscope and probes as often as operating conditions require TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Inspection Exterior Inspect the outside of the oscilloscope for damage wear and missing part
52. ith the same VOLTS DIV and coupling settings on each channel 1 The maximum peak to peak voltage that can be displayed is 40 Vp p With 1x attenuation See Vertical specifica tions for available VOLTS DIV and probe attenuation settings Vertical Digitizers 8 bit resolution except when set to 2 mV div each channel sampled simultaneously VOLTS DIV Range 2 mV div to 5 V div at input BNC Position Range 2 mV div to 200 mV div 1 8 V 2200 mV div to 5 V div 45 V P2220 Probe 1X 10X Attenuation Supported Voltage Probe 1X 10X 20X 50X 100X 500X 1000X Attenuation Factors Supported Current Probe 1 mV A 10 mV A 20 mV A 50 mV A 100mV A 200 mV A 1 V A 5 V A Scales Analog Bandwidth in TPS2012 and TPS2014 TPS2024 Sample and Average modes IT 1 o o o o at BNC or with P2220 probe 200 MHz from 0 C to 40 C 180 MHz from 40 C to 50 C set to 10X DC Coupled 20 MHz when vertical scale is set to less than 5 mV Analog Bandwidth in Peak 75 MHz Detect mode 50 s div to 5 us div2 typical 20 MHz when vertical scale is set to less than 5 mV Selectable Analog Bandwidth 20 MHz Limit typical Lower Frequency Limit x10 Hz at BNC AC Coupled x1 Hz when using a 10X passive probe Rise Time at BNC typical TPS 2012 and TPS2014 TPS2024 lt 3 5 ns 2 1 ns 1 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual Specifications Table 1 1 Oscilloscope general characteristics Cont Vertical Peak
53. ithium Ion battery packs The battery packs are SMBus compliant and user replaceable A microcontroller manages the routing of power from the DC input and the 2 battery packs It also manages the charging of batteries and communication to the Acquisition board The instrument cooling fan is powered by the IO board The fan can be switched on and off having its voltage varied by signals from the Acquisition board Power for the LCD backlight inverter board is supplied by the IO board A dimming voltage derived from a PWM pulse train and RC low pass filter controls the brightness of the backlight RS 232 and Parallel port signals are passed from the Acquisition board through the IO board to their rear mounted connectors The Liquid Crystal Display pattern consists of 320 columns with 3 subcolumns and 240 rows and has associated drivers and a backlight The backlight is based upon a 5 mA top light fluorescent tube All switches position encoders and LEDs are mounted on the Front Panel board of the two channel oscilloscope Additionally an IC on this board provides buffering and multiplexing of switch signals for the Acquisition board Two signals and a sense line are provided by the Acquisition board to support the front panel One of these lines resets the scan a second clocks the scan to the next position and the sense line receives the current state of the selected switch or encoder position For the encoders some amount of debo
54. ld office or representative Changes to Tektronix products are sometimes made to accommodate improved components 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 m Instrument type or model number m Instrument serial number m Instrument modification number if applicable 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 Modules can be serviced by selecting one of the following two options Contact your local Tektronix service center or representative for repair assistance Module Exchange In some cases you may exchange your module 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 1 800 833 9200 and select option 2 New Modules You may purchase replacement modules in the same way as other replacement parts TPS2000 Series Digital Storage Oscilloscopes Service Manual 8 1 Replaceable Parts Using the Replaceable Parts List This section contains a list of the mechanical and electrical components that are replaceable for the oscilloscope Use this list to identify and order replacement parts Table 8 1 describes ea
55. le to the user at all times Do Not Operate Without Covers Do not operate this product with covers or panels removed Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Replace Batteries Properly Replace batteries only with the specified type and rating Recharge Batteries Properly Recharge batteries for the recommended charge cycle only Use Proper AC Adapter Use only the AC adapter specified for this product Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere TPS2000 Series Digital Storage Oscilloscopes Service Manual vii General Safety Summary 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 Terms in this Manual These terms may appear in this manual A A WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Symbols and Terms These terms may appear on the product on the Product DANGER indicates an injury hazard immediately accessible as you read the marking m WARNING indicate
56. least ten minutes in an ambient temperature between 20 C and 30 C Adjustments performed prior to warm up or outside this temperature range may result in poor performance If all steps in the procedures are completed successfully a Pass message is displayed and the new calibration constants take affect If any step fails the procedure is aborted and the current calibration is not affected You can choose to abort the procedures at any step by selecting FCAL ABORT without affecting the current calibration NOTE While performing the adjustment procedure keep in mind that some of the steps take a significant amount of time up to 5 minutes to complete The equipment setups shown in Figure 5 1 are required to complete the adjustment procedure Table 5 2 on page 5 5 lists the steps in the procedure and the signal requirement for each step You must enable the Service menu to perform the adjustment procedure 1 Power on the oscilloscope 2 Push the front panel MEASURE button to access the MEASURE menu Push the top option button to access the Measure 1 menu Push and hold the front panel SINGLE SEQ button Push and hold the front panel AUTOSET button Wait at least two seconds Release the SINGLE SEQ button 99 RI LENOIR Q9 Release the AUTOSET button A message appears in the lower left corner of the screen stating Service mode ON 9 Push the front panel UTILITY button The last item in the Utility menu is
57. lloscope SEC DIV to 10 ns div 6 Set the leveled sine wave generator output to the following levels TPS2012 TPS2014 TPS2024 100 MHz measurement 1 Vp p m TPS2024 200 MHz measurement 2 Vp p TPS2000 Series Digital Storage Oscilloscopes Service Manual 4 9 Performance Verification NOTE The measured amplitude can fluctuate around 1 V for the TPS2012 TPS2014 TPS2024 100 MHz measurement and 2 V for the TPS2024 200 MHz measurement 7 Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check that triggering is stable 8 Change the oscilloscope setup using the following step Press menu button Select menu option Select setting 9 Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check that triggering is stable 10 Disconnect the test setup TPS2000 Series Digital Storage Oscilloscopes Service Manual AAA AAA Adjustment Procedures AS AA Adjustment Procedures This section contains an adjustment procedures for the TPS2000 Series oscilloscopes Only qualified personnel should perform service procedures Read the Service Safety Summary and the General Safety Summary at the beginning of this manual before performing any service procedures NOTE The voltage references inside TPS2000 Series oscilloscopes are very stable over time and should not require routine updates Before performing any procedure in this chapter first verify that the oscilloscope does not meet specifications
58. m ASIC m Signal processing display system services ASIC m RAM m FLASH ROM m Microprocessor m Internal peripheral interface m Power supplies For a four channel oscilloscope the attenuators and ASICs are duplicated Most of the other aspects of the circuitry remain unchanged Signals from the CH 1 CH 2 and other input connectors pass through attenua tors and an AC coupling switch to the amplifier ASIC The EXT TRIG input uses an abbreviated version of this path without some of the attenuator settings and the AC coupling switch The amplifier ASIC contains buffers and variable gain amplifiers as well as filters that provide 20 MHz bandwidth limiting The task of the amplifier ASIC is to convert from a 1 MQ single ended environment in the input to a much lower impedance differential and thus less noise sensitive environment for the isolation and acquisition process The amplifier ASIC assures that the input signal is amplified to approximately the correct level to allow the fullest possible use of the isolation circuit and digitizer The isolation circuit uses a modulation clock to transfer the input signal across the isolation boundary via an isolation transformer The input signal is demodu TPS2000 Series Digital Storage Oscilloscopes Service Manual Theory of Operation lated and sent to the acquisition ASIC Control of the amplifier ASIC across the isolation boundary is provided by an optocoupler Power is provided to ea
59. mV 36 4 mV Channel 3 DC Gain Ac smVdv mV 36 4 mV Channel 4 DC Gain Ac smVdv mV 36 4 mV Channel 1 Bandwidth 2 12 V Po Channel 2 Bandwidth 2 12 V Po Channel 3 Bandwidth aay Channel 4 Bandwidth PT Sample Rate and Delay Time Accuracy 2 divs NER 2 divs Channel 1 Edge Trigger Sensitivity Stable trigger Channel 2 Edge Trigger Sensitivity Stable trigger f E Channel 3 Edge Trigger Sensitivity Stable trigger E Channel 4 Edge Trigger Sensitivity Stable trigger E External Edge Trigger Sensitivity Stable trigger 1 Channels 3 and 4 are only on four channel oscilloscopes 4 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual Performance Verification Performance Verification Procedures Before beginning these procedures two conditions must first be met m The oscilloscope must have been operating continuously for twenty minutes within the operating temperature range specified in the Specifications section on page 1 8 m You must perform the Self Calibration operation described below If the ambient temperature changes by more than 5 C you must perform the Self Calibration operation again The time required to complete the entire procedure is approximately one hour always set voltage source outputs to 0 V before making or changing any interconnections WARNING Some procedures use hazardous voltages To prevent electrical shock Self Test
60. nce of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix shipping charges prepaid and with a copy of customer proof of purchase 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 WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RES
61. nditioned to like new performance All replaced parts modules and products become the property of Tektronix In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the pr
62. nnectors and knob shafts so they feed through the front case 4 Lower the chassis onto the front case 5 Install the four screws on the inside of the chassis that attach the chassis to the front cover See Figure 6 4 6 Follow the procedures on page 6 7 to install the rear case 7 Install the plastic BNC shells onto the BNC connectors 8 Usethe 16 mm 5 16 inch deep socket and install the BNC nuts onto the BNC connectors Torque the nuts to 40 in lbs using the torque wrench 9 Install the BNC cover and front panel knobs 6 12 TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Front case screws 4 Plastic BNC shell 0 625 BNC nut BNC cover Figure 6 4 Removing the front case TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 13 Maintenance Acquisition Board A You will need a torque limiting Torx T 15 long shank screwdriver a flat blade screwdriver and a 16 mm 5 8 inch deep socket for this procedure CAUTION The acquisition board is particularly sensitive to ESD Read the Preventing ESD section on page 6 1 before removing or installing the acquisition board Removal To remove the acquisition board refer to Figure 6 5 on page 6 15 and follow these steps 1 2 A SUM Remove the rear case Follow the procedure on page 6 7 Remove the BNC cover by prying up on the exposed edge See Figure 6 5 on page 6 15
63. o refer to the Operating Information section and your oscilloscope user manual for information about using the oscilloscope Preventing ESD When performing any service which requires internal access to the oscilloscope adhere to the following precautions These precautions will help you avoid damaging internal modules and their components due to electrostatic discharge ESD CAUTION Static discharge can damage any semiconductor component in this oscilloscope m Minimize handling of static sensitive modules m Transport and store static sensitive modules in their static protected containers or on a metal rail Label any package that contains static sensitive modules TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 1 Maintenance m Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules W Service static sensitive modules only at static free workstations Do not allow anything capable of generating or holding a static charge on the workstation surface m Handle circuit boards by the edges when possible m Do not slide the modules over any surface m Avoid handling modules in areas that have a floor or work surface covering capable of generating a static charge Inspection and Cleaning General Care Inspection and Cleaning Procedures This section describes how to inspect for dirt and damage and how to clean the oscilloscope Inspect
64. o the sine wave generator setup diagram BWL refers the maximum bandwidth of the oscilloscope 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 5 37 38 39 42 43 45 47 50 51 52 53 54 5 5 6 BWL SV Edge 50 Ohm Refer to Edge setup 1 kHz 0 to 800 mV fast rising edge diagram TPS2000 Series Digital Storage Oscilloscopes Service Manual Adjustment Procedures Table 5 2 Adjustment steps Cont Step Two channel models 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 TPS2000 Series Digital Storage Oscilloscopes Service Manual Step Four channel models 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Signal source setting Input Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm 5 kHz 1 Vp p CH2 1 MHz 100 mV 1 MHz 1 Vp p Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm 50 kHz 1 2 Vp p 20 MHz 1 2 Vpop BWL 30 mV BWL 60 mV Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm BWL 120 mV y BWL 300 mV y BWL 600 mV y Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm BWL 1 2 V 5 kHz 2 5 Vp p 1 MHz 2 5 Vp p Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm 50 kHz 2 5 Vp p 20 MHz 2 5 Vp p Sine Wave Generator 50 Ohm Sine Wave
65. oduct THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES WARRANTY TPSBAT Battery Pack Tektronix warrants that the product listed above will be free from defects in materials and workmanship for a period of three 3 months from the date of original purchase from an authorized Tektronix distributor If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product Parts modules and replacement products used by Tektronix for warranty work may be new or reconditioned to like new performance All replaced parts modules and products become the property of Tektronix In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performa
66. oe o OOO Ce Ce Ce O o Ho st ogqoool O O O O O Output PE DS 50 92 E BNC cable terminator 3 Set the time mark generator period to 10 ms 4 Set the oscilloscope VOLTS DIV to 500 mV div 5 Set the oscilloscope Main SEC DIV to 1 ms div 6 Press SET LEVEL TO 50 7 Use the vertical POSITION control to center the test signal on screen 8 Use the horizontal POSITION control to set the position to 10 00 ms 9 Set the oscilloscope SEC DIV to 250 ns div TPS2000 Series Digital Storage Oscilloscopes Service Manual Performance Verification Check Edge Trigger Sensitivity 10 Check that the rising edge of the marker crosses the center horizontal graticule line within 2 divisions of center graticule NOTE One division of displacement from graticule center corresponds to a 25 ppm time base error 11 Disconnect the test setup This test checks the edge trigger sensitivity for all input channels 1 Set up the oscilloscope using the following steps Press menu button DEFAULT SETUP CH 1 or whatever channel is currently being tested TRIGGER ACQUIRE MEASURE Select menu option Voltage Probe Mode Sample Source Type Select setting 1X Normal An unchecked channel Pk Pk 2 As shown below connect the oscilloscope channel selected in the table to the leveled sine wave generator Leveled
67. ope channel selected in the table to the leveled sine wave generator Leveled sine wave generator Digitizing oscilloscope Osses 0000DU O 500000 0000 FI cy jum OOOO RON n 00000 Output T Si 90 ca 50 2 feedthrough terminator BNC cable Set the oscilloscope VOLTS DIV to 500 mV div Set the oscilloscope SEC DIV to 10 us div Set the leveled sine wave generator frequency to 50 kHz Set the leveled sine wave generator output level so the peak to peak measurement is between 2 98 V and 3 02 V Set the leveled sine wave generator frequency to m 100 MHz if you are checking a TPS2012 2014 m 200 MHz if you are checking a TPS2024 Set the oscilloscope SEC DIV to 10 ns div Check that the peak to peak measurement is 22 12 V 4 5 Performance Verification Check Sample Rate and Delay Time Accuracy 4 6 10 Disconnect the test setup 11 Repeat steps 1 through 10 until all input channels have been checked This test checks the time base accuracy 1 Set up the oscilloscope using the following steps Press menu button Select menu option Select setting CH 1 or whatever channel is Voltage Probe 1X currently being tested 2 Connect the oscilloscope to the time mark generator as shown below Time mark Digitizing oscilloscope generator Ose ee aS oooooo O 5000000 OD
68. or replace defective Rear Case or display filter Loose connectors or labels hardware Circuit boards Loose broken or corroded solder connec Remove failed module and tions Burned circuit boards Burned replace with a new module broken or cracked circuit run plating Solder Cold solder or rosin joints Resolder joint and clean with connections isopropyl alcohol Wiring and Loose plugs or connectors Burned broken Firmly seat connectors Repair or cables or frayed wiring replace modules with defective wires or cables TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 3 Maintenance 6 4 Cleaning Procedure Interior To clean the oscilloscope 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 then wipe with a lint free cloth dampened with warm deionized water A cotton tipped applicator is useful for cleaning in narrow spaces and on circuit boards STOP If after performing steps 1 and 2 a module is clean upon inspection skip steps 3 and 4 Proceed with step 5 If steps 1 and 2 do not remove all the dust or dirt all modules in the oscilloscope except the Display Module and Front Panel Module may be spray washed using a solution of 73 isopropyl alcohol Extensive cleaning of the Display Module is difficult because wa
69. oscope General features Model Channels Bandwidth Sample rate TPS2012 2 100 MHz 1 0 GS s TPS2014 4 100 MHz 1 0 GS s TPS2024 4 200 MHz 2 0 GS s m Battery powered or line powered m Two rechargeable battery packs second battery pack optional m Independently isolated channels with no shared common ground m Floating measurements m TPS2PWRI Power Analysis Application software optional m Support for compatible voltage probes and current probes m Context sensitive help system Color LCD display m Selectable 20 MHz bandwidth limit m 2500 point record length for each channel m Autoset TPS2000 Series Digital Storage Oscilloscopes Service Manual 2 1 Operating Information Autoranging for quick set up and hands free operation Probe Check Wizard Cursors with readouts Trigger frequency readout Eleven automatic measurements Waveform averaging and peak detection Dual time base Math functions and X operations Math Fast Fourier Transform FFT Pulse Width trigger capability Video trigger capability with line selectable triggering External trigger Setup and waveform storage Removable mass storage Variable persistence display RS 232 and Centronics ports OpenChoice PC Communications software User interface in ten user selectable languages Attach Reference Leads Correctly 2 2 A WARNING Do not float the P2220 probe reference lead to gt 30 Vays Use the P5120 probe floatable to 600 V
70. ovides the following information m Replacement Procedures Page 6 6 lists the procedures for removal and installation of major modules m Tools Required Page 6 6 describes the tools needed to perform these procedures Read this section to prepare for module removal and installation WARNING Only qualified personnel should perform service procedures 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 Always disconnect the power cord before disassembling any portion of the oscilloscope To prevent damage to electrical components read Preventing ESD on page 6 1 m See Figure 8 1 on page 8 5 for an overview of how the entire oscilloscope is assembled m Read the Replacement Procedures on page 6 6 to understand what procedure to use to access a given module m Read Tools Required on page 6 6 for a list of tools needed to remove and install modules in the oscilloscope m If you are disassembling the oscilloscope for cleaning refer to Inspection and Cleaning on page 6 2 for cleaning instructions The Replaceable Parts section beginning on page 8 1 lists all of the replaceable modules Disassembly for replacement is best achieved by removing and replacing the modules in a specified order TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 5 Maintenance To remove and replace the fan backlight inverte
71. r 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm Sine Wave Generator 50 Ohm BWL 30 mV BWL 60 MVp p BWL 120 MVp p BWL 300 MVpp BWL 600 MVpp BWL 1 2 Vp 5 kHz 2 5 Vp p 1 MHz 2 5 Vp 50 kHz 2 5 Vp p 20 MHz 2 5 V5 BWL 2 5 Vp BWL 5 Vp p 5 9 Adjustment Procedures 5 10 TPS2000 Series Digital Storage Oscilloscopes Service Manual Y A Maintenance ee er_T e LLL LOIIA PIDELDII Maintenance This section contains the following information that is needed to perform periodic and corrective maintenance on TPS2000 Series oscilloscopes m Preparation tells you how to get ready to do oscilloscope maintenance m Preventing ESD provides general information on preventing damage to internal modules when doing maintenance m Inspection and Cleaning provides procedures for inspecting the oscilloscope and cleaning its external and internal modules m Removal and Installation Procedures provides procedures for the removal and installation of modules m Troubleshooting provides information for isolating failed modules m Repackaging Instructions provides packaging information for shipment or storage Preparation Only qualified personnel should perform service procedures Read the Service Safety Summary and the General Safety Summary sections of this manual before performing any service procedures Als
72. r acquisition of a single shot event has completed Pulse Width Trigger The oscilloscope counts pulses of significant magnitude inside the 250 ms measurement window that qualify as triggerable events such as narrow pulses in a PWM pulse train if set to mode and the width is set to a relatively small time Edge Trigger The oscilloscope counts all edges of sufficient magnitude and correct polarity Video Trigger The Frequency Counter does not operate TPS2000 Series Digital Storage Oscilloscopes Service Manual Specifications Table 1 1 Oscilloscope general characteristics Cont Measurements Cursors Types Amplitude difference between cursors AV AA AVA Time difference between cursors At Reciprocal of At in Hertz 1 At Frequency Period Mean Pk Pk Cycle RMS Min Max Rise Time Fall Time Pos Width Neg Width Automatic Measurements Probe Compensator Output Output Voltage typical 5 V 10 into 1 MQ load Frequency typical 1kHz Adjustment Interval The recommended factory calibration interval is one year Table 1 2 Oscilloscope display characteristics Type 145 mm 5 7 in diagonal liquid crystal Resolution 320 x 240 vertical pixels Brightness Adjustable Contrast Adjustable temperature compensated Backlight Intensity typical 60 to 100 cd m 1 Available through the display menu Table 1 3 Oscilloscope physical characteristics Size Height 160 8 mm 6 33 in Width 336 3 mm 1
73. r board or IO board refer to Table 6 2 Table 6 2 Procedures for module replacement by removing the rear case Remove module See procedure on Fan Page 6 9 Backlight inverter board Page 6 9 Remove fan first IO board Page 6 10 To remove and replace the acquisition board front panel board LCD display compact flash module or keypad refer to Table 6 3 Table 6 3 Procedures for module replacement by removing the front case Remove module See procedure on Front case Remove for following procedures Page6 11 Acquisition board Page 6 14 Remove lO board first Front panel board Page 6 16 Display module Page 6 17 Remove front panel board first Compact flash module Page 6 18 Remove acquisition board first Keypad Page 6 18 Tools Required Use the following tools to remove and replace modules in the oscilloscope m Torque limiting screwdriver long shank 8 in Ib 85 N m range with Torx 1 15 tip m 16 mm 5 8 inch deep socket with wide center hole S K Hand Tool Corp S K 240820 or equivalent m Torque wrench to 40 in Ib 4 5 N m m Screwdriver with 1 4 inch 6 35 mm flat blade m Pliers all purpose and needle nose 6 6 TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Rear Case You will need a torque limiting Torx T 15 screwdriver for this procedure Removal To remove the rear case refer to Figure 6 1 on page 6 8 and follow these steps 1 2
74. reater than the oscilloscope dimensions m Make sure to remove the battery before placing the oscilloscope into the shipping carton Store the battery according to the recommendations on page 6 28 m Make sure that the oscilloscope is adequately padded with a cushioning material like foam paper or bubble wrap The oscilloscope should not move around inside of the carton when sealed If the oscilloscope is being shipped to a Tektronix Service Center enclose the following information m The owner address m Name and phone number of a contact person m Type and serial number of the oscilloscope m Reason for returning m A complete 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 the shipping carton in two prominent locations TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 31 Maintenance Storage The oscilloscope should be stored in a clean dry environment The following environmental characteristics apply for both shipping and storage oscilloscope not operating NOTE Remove the battery and store it separately from the oscilloscope See the battery storage recommendations on page 6 28 m Temperature range 20 C to 60 C W Altitude To 15 000 m See the Specifications section for a complete listing of the environmental Characteristics 6 32 TPS2000 Series D
75. red AAA a Performance Verification This section contains performance verification procedures for the specifications marked with the symbol The following equipment or a suitable equivalent is required to complete these procedures Description DC Voltage Source Leveled Sine Wave Generator Time Mark Generator 50 Q BNC Cable 50 Q BNC Cable 50 Q Feedthrough Termination Dual Banana to BNC Adapter Splitter Power Minimum requirements 17 5 mV to 7 V 0 5 accuracy 50 kHz and 200 MHz 3 amplitude accuracy 10 ms period 10 ppm accuracy BNC male to BNC male 1m 36 in long BNC male to BNC male 25 cm 10 in long BNC male and female connectors Banana plugs to BNC female Frequency range DC to 4 GHz Tracking gt 2 0 TPS2000 Series Digital Storage Oscilloscopes Service Manual Examples Wavetek 9100 Universal Calibration System with Oscilloscope Calibration Module Option 250 Fluke 5500A Multi product Calibrator with Oscilloscope Calibration Option Option 5500A SC Tektronix part number 012 0482 XX Tektronix part number 012 0208 XX Tektronix part number 011 0049 XX Tektronix part number 103 0090 00 Tektronix part number 015 0565 XX 4 1 Performance Verification Test Record Serial number Procedure performed by Date Test Feed Oscilloscope tests High limit Channel 1 DC Gain Ac mVdv 8339mV a 36 4 mV Channel 2 DC Gain Ac smVdv
76. relative humidity Operating outside of this range can cause damage Battery discharge capacity drops significantly at tempera tures below 0 C 32 F and above 45 C 113 F Max wet bulb 1 8 TPS2000 Series Digital Storage Oscilloscopes Service Manual Specifications Table 1 6 P2220 Probe specifications Electrical characteristics 1X position Bandwidth DC to 6 MHz Attenuation Ratio 1 1 2 Compensation Range Compensation is fixed correct for all oscillo scopes with 1 MQ input Input Resistance 1 MQ 3 at DC Input Capacitance 80 pF to 110 pF Rise Time typical 50 0 ns Maximum Input Voltage 10X position 300 Vims CAT II or 300 V DC CAT Il Between Tip Signal and Reference Lead 150 Vims CAT III or 150 V DC CAT III 420 V peak 5096 DF 1 s PW 670 V peak 2096 DF 1 s PW 1X position 150 Vims CAT II or 150 V DC CAT Il 100 Vims CAT III or 100 V DC CAT III 210 V peak 5096 DF 1 s PW 330 V peak 2096 DF 1 s PW 300 Vis derate at 20 dB decade above 900 kHz to 13 V peak AC at 3 MHz and above For nonsinusoidal waveforms peak value must be less than 450 V Excursion above 300 V should be less than 100 ms duration RMS signal level including any DC component removed through AC coupling must be limited to 300 V If these values are exceeded damage to the instrument may result Refer to the Overvoltage Category on the next page Maximum Input Voltage 10X position 300 Vims CAT II or 300 V D
77. rovides DRAM refresh processes the clock and performs various memory mapping tasks required by all elementa ry microprocessor based systems In a four channel system the two display ASICS are interconnected so that one ASIC may provide display information for the second The processing and display system handles some of the computational tasks Other tasks are performed by the processor system Since all array processing is performed in the processing and display system no computations can be performed that involve data from two different channel sets Thus subtracting channel 3 data from channel 2 is prohibited Probe Compensation The PROBE COMP and ground terminals are provided for probe adjustment Acquisition Board Power The IO board supplies the Acquisition board with 5 0 3 0 3 3 and 15 VDC These sources are used directly or as sources for other converters on the Acquisition board The Acquisition board supplies 35 volts used for LCD bias and for series strings of LEDs on the front panel for button illumination The LCD bias varies the contrast and is temperature compensated by a thermistor mounted on the front panel TPS2000 Series Digital Storage Oscilloscopes Service Manual 3 3 Theory of Operation Power Supply and Battery System Display Module Front Panel Two Channel Oscilloscopes 3 4 The IO board accepts the power input for the oscilloscope from either a 15 VDC external supply or from one of two internal L
78. s Oscilloscopes that appear to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and perfor mance Immediately repair defects that could cause personal injury or lead to further damage to the oscilloscope Cleaning Procedure Exterior To clean the oscilloscope exterior and probes 1 Remove loose dust on the outside of the oscilloscope and probes with a lint free cloth Use care to avoid scratching the clear glass display shield 2 Use a soft cloth dampened with water to clean the oscilloscope or use a 75 isopropyl alcohol solution for more efficient cleaning CAUTION To prevent getting moisture inside the oscilloscope during external cleaning use only enough liquid to dampen the cloth or applicator To avoid damage to the surface of the oscilloscope or probes do not use any abrasive or chemical cleaning agents Inspection Interior Inspect and clean the interior if it appears that the oscillo scope may have been damaged or exposed to an unusually dirty environment To inspect and clean the interior disassemble the oscilloscope by completing each of the disassembly procedures in the order given starting on page 6 5 Inspect the internal portions of the oscilloscope for damage and wear using Table 6 1 as a guide Repair defects immediately Table 6 1 Internal inspection check list Item Inspect for Repair action Front and Cracks or deformations Scratched lettering Repair
79. s an injury hazard not immediately accessible as you read the marking m CAUTION indicates a hazard to property including the product The following symbol s may appear on the product A CAUTION Refer to Manual Chassis Ground Standby viii TPS2000 Series Digital Storage Oscilloscopes Service Manual General Safety Summary Probe Safety A guard around the probe body provides a finger barrier for protection from electric shock Finger guard guard on the probe body and do not touch metallic portions of the probe head WARNING To avoid electric shock when using the probe keep fingers behind the while it is connected to a voltage source Connect the probe output to the oscilloscope before connecting the probe to the circuit under test Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement instrument TPS2000 Series Digital Storage Oscilloscopes Service Manual ix General Safety Summary X TPS2000 Series Digital Storage Oscilloscopes Service Manual EE OO 1 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
80. s in special equipment or parts of equipment telecommunica tions electronics Pollution Degree 2 Do not operate in an environment where conductive pollutants may be present UL61010 1 2004 amp UL61010B 2 031 2003 CSA C22 2 No 1010 1 92 amp CAN CSA C22 2 No 1010 2 031 94 1EC61010 031 2001 EN61010 031 2001 1 As defined in IEC 61010 1 2001 See certifications and compliances on page NO TAG Table 1 8 P2220 Probe environmental characteristics Temperature Humidity Cooling Method Altitude Operating Nonoperating 0 C to 50 C 32 F to 122 F 40 C to 71 C 40 F to 4159 8 F lt 60 relative humidity 41 C to 50 C 105 F to 122 F lt 90 relative humidity 40 C 104 F or below Convection Operating Nonoperating 10 000 ft 3 000 m 40 000 ft 15 000 m TPS2000 Series Digital Storage Oscilloscopes Service Manual AS AAA Operating Information A s Operating Information TPS2000 Series oscilloscopes are two or four channel instruments in small lightweight bench top chassis In addition to a list of general features this section covers m Howto perform a brief functional check m How to use the self calibration routine How to restore factory default settings For more detailed operating information refer to your user manual General Features The next table and list describe the general features Table 2 1 Oscill
81. sian 071 1451 XX Replacement power cords Standard North American 120 V 60 Hz 161 0066 00 Option A1 European 230V 50Hz 161 0066 09 Option A2 United Kingdom 230 V 50 Hz 161 0066 10 Option A3 Australian 240 V 50 Hz 161 0066 11 Option A5 Switzerland 230 V 50 Hz 161 0154 00 Option A6 Japan 100 V 60Hz 161 0298 00 Option AC China 220 V 50 60 Hz 161 0304 00 Option A99 No power cord Battery Lithium ion rechargeable 146 0150 XX TPSBAT Power adapter desktop AC to DC 119 6998 XX External pack battery charger TPSCHG BATTERY CHARGER LI ION 2 SLOT 119 6997 XX EXTERNAL PACK CHARGER 10MA 3A POWER SUPPLY EXTERNAL 48W 119 7287 XX DESKTOP 15VDC 3 2A OUT 90 254VAC 47 63 HZ IN Power Supply DC DC 75 W automotive 119 7164 XX 15V DC 4 77A OUT 12 VDC IN Cig Lighter input TPS2000 Series Digital Storage Oscilloscopes Service Manual Replaceable Parts Table 8 4 Replaceable optional accessories Description of accessory Hanger instrument Tektronix part number or nomenclature 343 1689 XX Carrying case soft 016 1950 XX Transit case hard The soft carrying case fits inside the hard transit case For proper use of the hard transit case always include the soft carrying case inside the hard transit case 016 1955 XX HCTEK4321 Programmer manual 071 1075 XX Power Application user manuals English 071 1452 XX French 071 1453 XX Italian 071 1454 XX German 071 1455 XX
82. sine wave generator 3 Set the oscilloscope VOLTS DIV to 500 mV div Digitizing oscilloscope n JO DO OS Oo 0 00 00 00 ODO 000 One sun ODOpg O0000 BNC cable 4 Set the oscilloscope SEC DIV to 25 ns div TPS2000 Series Digital Storage Oscilloscopes Service Manual T 50 2 feedthrough terminator 4 7 Performance Verification 4 8 Check External Edge Trigger Sensitivity 10 11 12 Set the leveled sine wave generator frequency to 10 MHz Set the leveled sine wave generator output level to approximately 500 mVp p so that the measured amplitude is approximately 500 mV The measured amplitude can fluctuate around 500 mV Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check that triggering is stable Set the leveled sine wave generator frequency to the following m 100 MHz if you are checking a TPS2012 2014 wm 200 MHz if you are checking TPS2024 Set the oscilloscope SEC DIV to 10 ns div Set the leveled sine wave generator output level to approximately 750 mVp p so that the measured amplitude is approximately 750 mV The measured amplitude can fluctuate around 750 mV Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check that triggering is stable Change the oscilloscope setup using the following step Press menu button Select men
83. tain a language overlay for the front panel controls TPS2000 Series Digital Storage Oscilloscopes Service Manual XV Preface xvi TPS2000 Series Digital Storage Oscilloscopes Service Manual AS qM Specifications AA CS Specifications These specifications apply to all TPS2000 Series oscilloscopes To verify that an oscilloscope meets specifications it must first meet the following conditions m The oscilloscope must have been operating continuously for twenty minutes within the specified operating temperature range See page 1 8 m You must perform the Do Self Cal operation accessible through the Utility menu if the operating temperature changes by more than 5 C m The oscilloscope must be within the factory calibration interval of one year m The V div specifications apply with the probe calibration is set to 1X probe mode Specifications begin in Table 1 1 All specifications are guaranteed unless noted typical Specifications that are marked with the 14 symbol are checked in the Performance Verification section Table 1 1 Oscilloscope general characteristics Acquisition Acquisition Modes Sample Peak Detect and Average Acquisition Rate typical Up to 180 waveforms per second per channel Sample acquisition mode no measurements Single Sequence Acquisition Stops After Sample Peak Detect Single acquisition all channels simultaneously N acquisitions all channels simultaneously N is selectable from 4 1
84. ter must not be trapped between the display shield and the display The polarizers integrated into the display degrade with long term exposure to water The display shield and display must be replaced as an assembly if significant moisture or debris become trapped inside Cotton tipped applicators and lint free rags moistened in isopropyl alcohol and or deionized water offer the best cleaning with the least opportunity for damage to the assembly The Front Panel Module can be damaged by deposition of film or debris inside the knob encoders To avoid this care must be taken to not drip liquid or blow debris into the encoders Proceed with step 3 3 Spray wash dirty parts with the 75 isopropyl alcohol solution and wait 60 seconds for the majority of the alcohol to evaporate 4 Use hot 49 C to 60 C 120 F to 140 F deionized water to thoroughly rinse the parts 5 Dry all parts with low pressure deionized air 6 Dry all components and assemblies in an oven or drying compartment using low temperature 52 C to 66 C 125 F to 150 F circulating air Lubrication Periodic lubrication is not required for the oscilloscope TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Removal and Installation Procedures Preparation A List of Modules Replacement Procedures This section describes how to remove and install the major mechanical and electrical modules of the oscilloscope It pr
85. ttery PIC Communication May occur sporadically during normal operation If errors occur repeatedly a 3 Battery PIC HW Failure hardware failure may exist Contact Tektronix 0 Diagnostics Diagnostics internal error Contact Tektronix 4 Diagnostics CH1 diagnostics failed Acquisition board or power supply failure 5 Diagnostics CH2 diagnostics failed Acquisition board or power supply failure supply failure TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 25 Maintenance 6 26 Table 6 4 List of error codes cont Number ID Description Probable cause 12 Diagnostics CH3 diagnostics failed Acquisition board or power supply failure 13 Diagnostics CH4 diagnostics failed Acquisition board or power supply failure 14 Diagnostics ADG421 2 diagnostics Acquisition board or power failed supply failure 255 Software Software defect Contact Tektronix Clearing the Error Log To clear the error log after fixing a problem follow these steps 1 Enable the Service menus as described on page 5 2 2 Push the UTILITY button and push the Service option button to display the Service menu 3 Push the Service Diag option button to display the Diagnostics menu 4 Push the Clear Error Log option button to clear the error log of past failures This also sets the Power Cycle count to zero TPS2000 Series Digital Storage Oscilloscopes Service Manual Maintenance Lithium lon Battery Maintenan
86. u option Select setting 13 14 15 Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check that triggering is stable Disconnect the test setup Repeat steps 1 through 14 until all input channels have been checked This test checks the edge trigger sensitivity for the external trigger 1 Set up the oscilloscope using the following steps Press menu button Select menu option Select setting DEFAULT SETUP CH 1 or whatever channel is Voltage Probe 1X currently being tested TRIGGER Source Ext Mode Normal TPS2000 Series Digital Storage Oscilloscopes Service Manual Performance Verification Press menu button Select menu option Select setting Pk Pk 2 Connect the oscilloscope to the leveled sine wave generator as shown below Leveled sine wave Digitizing oscilloscope generator Os55868850 g O GOD 00 0 A O Oi 0 OO O Output a i 2 E DIO G9 50 Q Power divider Male SMA to feedthrough female BNC i terminator 3 Pieces LI SMA female to female 3 Set the leveled sine wave generator frequency to the following m 100 MHz if you are checking a TPS2012 TPS2014 TPS2024 1 V from 10 MHz to 100 MHz m 200 MHz if you are checking TPS2024 2 V from 100 MHz to 200 MHz 4 Set the oscilloscope VOLTS DIV to 500 mV div 5 Set the osci
87. uncing occurs inside the front panel IC All key debouncing is handled in the display ASIC on the Acquisition board TPS2000 Series Digital Storage Oscilloscopes Service Manual Theory of Operation Four Channel The Front Panel board for four channel oscilloscopes is effectively two front Oscilloscopes panels in parallel The left side of the board is largely handled by the display ASIC for channels 1 and 2 The right side of the board is handled by the channel 3 and 4 ASIC Separate front panel ICs support these data paths LEDs The front panel contains three LEDs that light to indicate when the Save Autorange controls or the multipurpose knob are active In addition most buttons have a LED behind them for illumination in low light conditions Button illumination can be turned off in the Utility menu Internal Peripherals The Acquisition board includes an FPGA that manages communication between the microprocessor and the internal program memory FLASH RTC Real Time Clock battery system and temperature sensor The temperature sensor is used for fan control External Peripherals The Acquisition board FPGA also manages communication between the microprocessor and external RS 232 port Printer Port and Compact FLASH Card TPS2000 Series Digital Storage Oscilloscopes Service Manual 3 5 Theory of Operation 3 6 TPS2000 Series Digital Storage Oscilloscopes Service Manual ES AAA Performance Verification Equipment Requi
88. using the torque wrench 9 Install the BNC cover onto the front case 10 Install the rear case 11 Install the front panel knobs Acquisition board g screws 6 YI EB 8 Ss Pull up gently to disconnect 42100 BNC cover Figure 6 5 Using a screwdriver to remove the Acquisition board TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 15 Maintenance Front Panel Board You will need a torque limiting Torx T 15 screwdriver for this procedure Removal To remove the front panel board refer to Figure 6 6 on page 6 16 and follow these steps 1 Remove the front case Follow the procedure on page 6 11 2 Remove the five screws that attach the front panel board to the chassis 3 Pull out to remove the front panel board from the chassis This will unseat the feed through connection between the front panel board and the acquisi tion board on the opposite side Chassis Front panel circuit board screws 5 Front panel circuit board Figure 6 6 Removing the front panel module Installation To install the front panel module refer to Figure 6 6 and follow these steps l Align the front panel board over the front chassis and reseat the feed through connection between the front panel board and the acquisition board on the opposite side 2 Install the five screws to attach the front panel board to the chassis 3 Install the front case
89. x com manuals Battery Maintenance Pay attention to these points when monitoring Li Ion batteries m Observe and note the run time that a new fully charged battery provides for powering your product Use this new battery run time as a basis to compare run times for older batteries The run time of your battery will vary depend ing on the product s configuration and the applications that you run m Routinely check the battery s charge status m Carefully monitor batteries that are approaching the end of their estimated life m Consider replacing the battery with a new one if you note either of the following conditions m The battery run time drops below about 80 of the original run time m The battery charge time increases significantly TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 27 Maintenance 6 28 Charging Storage A Handling Precautions Always follow the charging instructions provided with your product Refer to your product s user manual and or online help for detailed information about charging its battery The latest version of your Tektronix product user manual is available at www tektronix com NOTE When you troubleshoot battery issues for dual battery configurations only one battery pack should be installed You need to test one battery pack and one battery slot at a time Follow these recommendations when storing a Li Ion battery m Charge or discharge the battery to approx

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