Tektronix TPS2000B Series Service Manual Download

Page: 49 / 92

Adjustment Procedures

Setups Required to

Complete the Adjustment

Procedure

The following

gure shows the setups required to complete the adjustment

procedure.

Figure 2: Adjustment setups

TPS2000B Series Digital Storage Oscilloscopes Service Manual

Summary of Contents for TPS2000B Series

Page 1: ...xx TPS2000B Series Digital Storage Oscilloscopes ZZZ Service Manual P077044701 077 0447 01...

Page 2: ......

Page 3: ...irmware version 1 00 and above Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer...

Page 4: ...and pending Information in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tek...

Page 5: ...on 13 Acquisition Board 14 Power Supply and Battery System 16 Display Module 16 Front Panel 16 Performance Verification 19 Required Equipment 19 Test Record 20 Self Test 23 Self Calibration 23 Check D...

Page 6: ...Panel Knob 54 Front Case 54 Front Panel Board 56 Display Module 57 Compact Flash Board 58 Keypad 58 Troubleshooting 60 Troubleshooting Tree 61 Lithium Ion Battery Maintenance 66 Repackaging Instructio...

Page 7: ...etaining nuts 54 Figure 7 Removing the front case 55 Figure 8 Removing the Front Panel module 56 Figure 9 Removing the Display module 57 Figure 10 Removing and installing the keypad 59 Figure 11 Oscil...

Page 8: ...Mechanical characteristics 9 Table 9 Environmental performance 9 Table 10 Required equipment 19 Table 11 Test record 20 Table 12 Required equipment 33 Table 13 Adjustments steps 73 108 are for 4 CH mo...

Page 9: ...ct 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 ob...

Page 10: ...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 on th...

Page 11: ...ndering first aid and resuscitation is present Disconnect Power To avoid electric shock switch off the instrument power then disconnect the power cord from the mains power Use Care When Servicing With...

Page 12: ...Service Safety Summary viii TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 13: ...Digital Storage Oscilloscope Related Manuals These manuals contain additional documentation for the oscilloscopes They are available at www tektronix com manuals Language User manual part number Progr...

Page 14: ...body and do not touch metallic portions of the probe head while it is connected to a voltage source Connect the probe output to the oscilloscope before connecting the probe to the circuit under test D...

Page 15: ...e capacitance is in series with all paths to ground Ground coupling mode provides a reference waveform derived from the values identified during SPC This reference waveform shows visually where signal...

Page 16: ...g vertical position 1 of vertical position 0 2 div 2 mV DC Measurement Accuracy Average Acquisition Mode Average of 16 waveforms with vertical position not at zero for 200 mV to 5 V div 3 reading vert...

Page 17: ...Channel Common Mode Rejection Ratio typical With the same signal applied to each channel this is the ratio of the acquired signal amplitude to the amplitude of the MATH difference waveform CH1 CH2 CH...

Page 18: ...an 100 ms div This is because Holdoff cannot be set in Scan Mode which begins at 100 ms div when Trigger Mode is AUTO By adjusting Trigger Mode to NORMAL the Scan Mode operation is turned off and Hold...

Page 19: ...es at 25 more signal than generates a stable visual display At 5 mV div 50 additional signal is typically required Coupling Sensitivity AC Same as DC coupled limits from 50 Hz and above NOISE REJ Redu...

Page 20: ...p Pulse Width Trigger Pulse Width Trigger modes Trigger when Less than Greater than Equal or Not Equal Positive pulse or Negative pulse Pulse Width Trigger Point Equal The oscilloscope triggers when t...

Page 21: ...024B only Display Table 4 Display Characteristic Description Type 11 5 cm W x 8 64 cm H 14 38 cm diagonal VGA active TFT color liquid crystal display LCD with color characters waveforms on a black bac...

Page 22: ...cifically designed external power supply Typical Power draw from External DC input 2 channel models charging a battery 21 W 2 channel models no battery 13 W 4 channel models charging a battery 30 W 4...

Page 23: ...o 60 relative humidity RH at up to 50 C 122 F 5 to 60 relative humidity RH between 30 C 86 F and 71 C 160 F noncondensing 3 Altitude Operating and Nonoperating 3 000 m 10 000 ft Altitude is limited by...

Page 24: ...Specifications 10 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 25: ...n installing and operating your TPS2000B Series Digital Storage Oscilloscope refer to the TPS2000B Series Digital Storage Oscilloscope User Manual See page ix Related Manuals TPS2000B Series Digital S...

Page 26: ...Operating Information 12 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 27: ...oscilloscopes to the module level It describes the basic operation of each functional circuit block shown in the following figure Figure 1 TPS2000B Series module level block diagram Remove CH3 and CH...

Page 28: ...ng 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 v...

Page 29: ...erization 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...

Page 30: ...of 320 columns with 3 subcolumns and 240 rows and has associated drivers and a backlight Front Panel Two Channel Oscilloscopes All switches position encoders and LEDs are mounted on the Front Panel bo...

Page 31: ...lity 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...

Page 32: ...Theory of Operation 18 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 33: ...e 9100 Universal Calibration System with Oscilloscope Calibration Module Option 250 Fluke 5500A Multi product Calibrator with Oscilloscope Calibration Option Option 5500A SC 50 BNC Cable BNC male to B...

Page 34: ...limit 5 mV div 33 6 mV 36 4 mV 200 mV div 1 358 V 1 442 V Channel 1 DC Gain Accuracy 2 V div 13 58 V 14 42 V 5 mV div 33 6 mV 36 4 mV 200 mV div 1 358 V 1 442 V Channel 2 DC Gain Accuracy 2 V div 13...

Page 35: ...6 59 V Channel 1 DC Measurement Accuracy Vertical Position 7 04 V 14 7 V 13 3 V 5 mV div Vpos Vertical Position 0 15 5 mV 19 5 mV Vertical Position 17 6 mV 31 3 mV 38 6 mV 200 mV div Vertical Positio...

Page 36: ...Vertical Position 7 04 V 14 7 V 13 3 V 5 mV div Vpos Vertical Position 0 15 5 mV 19 5 mV Vertical Position 17 6 mV 31 3 mV 38 6 mV 200 mV div Vertical Position 0 658 mV 742 mV Vertical Position 704 mV...

Page 37: ...ration operation again The time required to complete the entire procedure is approximately one hour WARNING Some procedures use hazardous voltages To prevent electrical shock always set voltage source...

Page 38: ...VOLTS DIV setting listed in the following table perform the following steps a Set the DC voltage source output level to the positive voltage listed and record the mean measurement as Vpos b Reverse t...

Page 39: ...age 64 Source Channel 1 MEASURE Type Mean 3 As shown in the following figure connect the oscilloscope channel selected in the table to the DC voltage source 4 Record DC Measurement Accuracy with Verti...

Page 40: ...tical Position not zero b Set the Vertical Position to the offset value listed in the following table Set the DC voltage source output level to the Vneg value from the table In the test record write t...

Page 41: ...to 500 mV div 4 Set the oscilloscope SEC DIV to 10 s div 5 Set the leveled sine wave generator frequency to 50 kHz 6 Set the leveled sine wave generator output level so the peak to peak measurement is...

Page 42: ...ope VOLTS DIV to 500 mV div 6 Set the oscilloscope Main SEC DIV to 1 ms div 7 Press SET LEVEL TO 50 8 Use the vertical POSITION control to center the test signal on screen 9 Use the horizontal POSITIO...

Page 43: ...leveled sine wave generator frequency to 10 MHz 6 Set the leveled sine wave generator output level to approximately 500 mV p p so that the measured amplitude is approximately 500 mV The measured ampli...

Page 44: ...setup 15 Repeat steps 1 through 14 until all input channels have been checked Check External Edge Trigger Sensitivity This test checks the edge trigger sensitivity for the external trigger 1 Set up t...

Page 45: ...00 MHz measurement 1 Vp p TPS2024B 200 MHz measurement 2 Vp p NOTE The measured amplitude can fluctuate around 1 V for the TPS2012B TPS2014B TPS2024B 100 MHz measurement and 2 V for the TPS2024B 200 M...

Page 46: ...Performance Verification 32 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 47: ...nt is required to complete the procedure Table 12 Required equipment Description Minimum requirements Examples DC Voltage Source 20 V to 20 V 0 1 accuracy Leveled Sine Wave Generator 60 kHz and 200 MH...

Page 48: ...e adjustment procedure keep in mind that some of the steps take a significant amount of time up to 5 minutes to complete Enable the Service Menu You must enable the Service menu to perform the adjustm...

Page 49: ...ups Required to Complete the Adjustment Procedure The following figure shows the setups required to complete the adjustment procedure Figure 2 Adjustment setups TPS2000B Series Digital Storage Oscillo...

Page 50: ...ng 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 the following table BWL s...

Page 51: ...age 1 0 8 V 7 DC Voltage 1 0 4 V 8 DC Voltage 1 0 32 V 9 DC Voltage 1 0 2 V 10 DC Voltage 1 0 16 V 11 DC Voltage 1 0 08 V 12 DC Voltage 1 0 04 V 13 DC Voltage 1 0 03 V 14 DC Voltage 1 0 02 V 15 DC Vol...

Page 52: ...ave Generator 50 1 MHz 1 Vp p 40 Sine Wave Generator 50 50 kHz 1 2 Vp p 41 Sine Wave Generator 50 20 MHz 1 2 Vp p 42 Sine Wave Generator 50 BWL 30 mVp p 43 Sine Wave Generator 50 BWL 60 mVp p 44 Sine...

Page 53: ...2 5 Vp p 69 Sine Wave Generator 50 50 kHz 2 5 Vp p 70 Sine Wave Generator 50 20 MHz 2 5 Vp p 71 Sine Wave Generator 50 BWL 2 5 Vp p 72 Sine Wave Generator 50 BWL 5 Vp p CH2 73 Sine Wave Generator 50 5...

Page 54: ...Wave Generator 50 1 MHz 1 Vp p 95 Sine Wave Generator 50 50 kHz 1 2 Vp p 96 Sine Wave Generator 50 20 MHz 1 2 Vp p 97 Sine Wave Generator 50 BWL 30 mVp p 98 Sine Wave Generator 50 BWL 60 mVp p 99 Sine...

Page 55: ...ead the Service Safety Summary and the General Safety Summary sections of this manual before performing any service procedures Also refer to the Operating Information section and your oscilloscope use...

Page 56: ...dations Protect the oscilloscope from adverse weather conditions The oscilloscope is not waterproof Do not store or leave the oscilloscope where the liquid crystal display LCD is exposed to direct sun...

Page 57: ...the interior disassemble the oscilloscope by completing each of the disassembly procedures in the order given See page 45 Removal and Installation Procedures Inspect the internal portions of the oscil...

Page 58: ...ed 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 becomes trapped inside Cotton tipped appli...

Page 59: ...gram gives an overview of how the entire oscilloscope is assembled See Figure 16 The Replaceable Parts section lists all of the replaceable modules See page 73 Replaceable Parts If you are disassembli...

Page 60: ...IO board first See page 51 Display Adapter board Remove rear case fan Acquisition board and Display module first See page 52 To remove and replace the front case Front Panel board LCD display Compact...

Page 61: ...l cables are routed within the internal chassis area 3 Place the rear case over the assembled oscilloscope and ensure that All edges align with the chassis The RS 232 printer and power connectors alig...

Page 62: ...Maintenance Figure 3 Removing and installing the rear case 48 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 63: ...is Keep the screws washers and standoffs to use when installing the new fan 4 Remove the fan Installation To install a new fan follow these steps See Figure 4 1 Align the fan bracket with the fan Alig...

Page 64: ...on board and lift up to remove the I O board Installation To install the I O board follow these steps See Figure 4 1 Align the connector on the bottom of the I O board with the connector on the Acquis...

Page 65: ...oard so that you can reinstall it the same way 7 Disconnect the Display cable from J201 leave the other end connected to J401 on the Display Adapter board 8 Remove the seven screws that attach the Acq...

Page 66: ...tall the BNC cover on the front case 10 Install the rear case 11 Install the front panel knobs Figure 5 Using a screwdriver to remove the Acquisition board Display Adapter Board You will need T15 scre...

Page 67: ...ect this cable and remove the Display Adapter board from the instrument Installation To install the Display Adapter board follow these steps See Figure 4 1 Connect the four cables to the Display Adapt...

Page 68: ...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 Hold the BNC shell with your fingers and pull up to remove the she...

Page 69: ...to install the rear case See page 47 Installation 7 Install the plastic BNC shells on the BNC connectors 8 Use the 16 mm 5 16 inch deep socket and install the BNC nuts on the BNC connectors Torque the...

Page 70: ...l unseat the feedthrough connection between the Front Panel board and the Acquisition board on the opposite side Figure 8 Removing the Front Panel module Installation To install the Front Panel module...

Page 71: ...from J202 on the Display Adapter board See Figure 4 on page 50 6 Remove the four screws that attach the Display module to the chassis Support the display with your hand 7 Remove the copper tape and d...

Page 72: ...low the I O board mounting bracket that attach the Compact Flash board to the internal chassis See Figure 4 on page 50 3 Remove the single screw below the Display module that attaches the Compact Flas...

Page 73: ...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 co...

Page 74: ...damage to electrical components read Preventing ESD See page 41 Adjustment After Repair If you replace the acquisition circuit board you must adjust the oscilloscope after repair Refer to the Adjustm...

Page 75: ...isolate a problem to a specific troubleshooting procedure use the troubleshooting tree in the following four figures Figure 11 Oscilloscope troubleshooting tree page 1 of 4 TPS2000B Series Digital Sto...

Page 76: ...Maintenance Figure 12 Oscilloscope troubleshooting tree page 2 of 4 62 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 77: ...Maintenance Figure 13 Oscilloscope troubleshooting tree page 3 of 4 TPS2000B Series Digital Storage Oscilloscopes Service Manual 63...

Page 78: ...Maintenance Figure 14 Oscilloscope troubleshooting tree page 4 of 4 64 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 79: ...g The error log list can be accessed any time by pushing the UTILITY button and selecting Options Error Log The following table lists the error codes Table 15 List of error codes No ID Description Pro...

Page 80: ...s 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 approximat...

Page 81: ...s 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 sho...

Page 82: ...ed to use the instrument Do not expose a battery to temperatures above 60 C 140 F Keep the battery away from children Do not use a damaged battery If a battery pack is leaking fluids do not touch any...

Page 83: ...the recommendations See page 67 Storage Make sure that the oscilloscope is adequately padded with a cushioning material such as foam paper or bubble wrap The oscilloscope should not move around insid...

Page 84: ...intenance Temperature range 20 C to 60 C Altitude To 15 000 m See Specifications for a complete list of the environmental characteristics 70 TPS2000B Series Digital Storage Oscilloscopes Service Manua...

Page 85: ...he TPS2000B Series oscilloscope using the major circuit blocks The following figure shows the oscilloscope interconnections used in the four channel version Figure 15 TPS2000B Series block diagram TPS...

Page 86: ...Diagrams 72 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

Page 87: ...ment modification number if applicable If you order a part that was replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any chang...

Page 88: ...rt number when ordering replacement parts from Tektronix 3 and 4 Serial Number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at...

Page 89: ...ITION BD 2CH 12 878 0598 00 1 CKT BD ASSY ACQUISITION BD 4CH 13 174 5897 00 1 CA ASSY SP DISPLAY CABLE 14 202 0485 00 1 ASSEMBLY REAR CASE 15 367 0538 00 1 HANDLE OVERMOLDED 16 348 1791 00 2 FOOT REAR...

Page 90: ...FRONT SANTOPRENE BLACK 64 DEROMETER TEXTURED 34 020 2917 00 1 REPLACEMENT KIT BNC SHELL 35 366 0862 00 6 ASSEMBLY KNOB 470 DIAMETER 36 366 0863 00 6 ASSEMBLY KNOB 685 DIAMETER 200 5136 00 1 COVER BNC...

Page 91: ...340 00 1 LABEL 4 CH LANGUAGE GERMAN 335 2341 00 1 LABEL 4 CH LANGUAGE SPANISH 335 2342 00 1 LABEL 4 CH LANGUAGE JAPANESE 335 2343 00 1 LABEL 4 CH LANGUAGE PORTUGUESE 335 2344 00 1 LABEL 4 CH LANGUAGE...

Page 92: ...Replaceable Parts Figure 16 Exploded view diagram 78 TPS2000B Series Digital Storage Oscilloscopes Service Manual...

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