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Service Manual TLS 216 Logic Scope 070-8831-02

1. 6 46 A16 Low Voltage Power 1 6 47 A30 Display Assembly and Supply Fuse 6 48 Front Subpanel 6 52 Chassis feeds HARE RR 6 54 Disassembly for Cleaning 6 54 Troubleshooting 6 57 DiaSnOsucs disques 6 57 Firmware Updates sealed pU RR ek EN 6 58 Troubleshooting Procedures 6 59 Options and Accessories 7 1 ODptUOnS xc voor bea ERubup e rie 7 1 TLS 216 Service Manual Table of Contents Electrical Parts List Diagrams Mechanical Parts List TLS 216 Service Manual Options 1 5 International Power Option B1 Service Manual Option 1B Coaxial Adapter Set Option IK K420 Instrument Cart Warranty Plus Service Options Option HC100 4 Pen Option Rackmounted Logic Scope Option 2P Phaser 200e Color Option 9C Certificate of
2. 2 Mi 00ms Edge 26Jul 1993 14 44 29 oS Figure 4 5 Measurement of DC Offset Accuracy at Zero Setting d Check that the readout indicates an offset between 60 mV and 60 mV e Press GROUP MENU Group Definition main gt First Channel side Press the side menu button First Channel again if necessary to increment to the next channel to be tested f Press CURSOR press CLEAR MENU g Repeat substeps b through f for all 16 channels Substeps e and f will not be necessary for channel 16 Check DC Gain and Equipment Required Two dual banana connectors Item 5 one BNC T Voltage Measurement connector Item 6 one DC calibration generator Item 8 two precision coaxial Accuracy cables Item 4 one coaxial adapter Item 13 and one SMA to BNC adapter Item 14 Time Required Approximately 3 hours Prerequisites The logic scope must meet the prerequisites listed on page 4 15 Procedure 1 Install the test hookup and preset the instrument controls a Setthe output of the DC calibration generator to 4 26 TLS 216 Service Manual Performance Tests Output Sense 1 Dual Banana to BNC Adapters TLS 216 Service Manual DC Calibrator Connect the output of the DC calibration generator through a dual ba nana connector followed by a 50
3. Last Channel Volts Div or Group Mode Figure 2 2 Vertical Readout Displaying Two Group Readouts TLS 216 Service Manual 2 15 Operating Instructions for Waveform Groups The Vertical Readout includes group readouts Each group readout lists each group by number and indicates its last and first channel In addition the Vertical Readout displays only groups that are defined m displays the label of the selected group in reverse video See Figure 2 2 m displays OFF in the group readout for any group that is turned off in its Display Mode menu m displays the volts division setting next to the group label of groups that set to Analog mode with all channels in the group displayed If set to Analog mode with only the selected channel displayed the word Select replaces the volts division readout See Choosing a Group Display Mode which begins on page 2 22 for information about group modes displays the display mode Bus or Timing next to the group label of groups set to BusForm or Timing Diagram modes m displays the contents of the group by listing the last and the first channel it contains displays only one of the two pages of live as opposed to reference groups at a time Group 1 through Group 4 or Group 5 through Group 8 whichever page contains the currently selected group m displays the reference group currently selected in the Group More menu If MORE is lighted the live
4. adc Eon l l 1200 AUXTRIG FRONT PANEL TT t e CH2 A 1 Q3 KNOBS l 11300 1300 TT n 6 CH3A DFF l 1400 1 oF 0 CH4A J301 k d e SWITCHES 10 PINS i nos _ i oF e PLEX 6 e CH2 B l 12300 ar NE cow 5 4 SIGNAL 1 18 105 PDS oF T 6 8 jol Poal ums HH ens 16 PINS 3 E crouno ae 7 ou 12 PINS LO 12 PINS PROBE 13300 CALIBRATOR A12 FRONT PANEL og 6 BOARD BOARD ae TE 12 CS T CHC INTERPOLATOR BOARD oF 6 0 14200 TT F Q J 4300 a t as CH3 D E 2 FLOPPY DRIVER A14 100 PINS P102 102 100 50 PINS A18 A19 MAIN CONVERTER POWER FACTOR CONTROL BOARD CONTROL BOARD 12PINS 7 PINS 12 PINS BE pj 1004 100 PINS DEN zl 14 ji j2 ist ps A10 ACQUISITION BOARD P26 ANALOG POWER 50 PINS 6 ur DIGITAL POWER 40 PINS A17 MAIN LV POWER SUPPLY BOARD Figure 9 2 TLS 216 Interconnect Diagram 9 4 TLS 216 Service Manual Diagrams REAR PANEL 9 uw AI TRIGGER uu OUTPUT DELAYED TRIGGER 9 OUTPUT E 1351 P35 26 PINS IEEE STD 488 PORT P51 h ees DS H Boe vca A23 SERPAR BOARD jl p37 D CENTRONICS COMPATIBLE 26 iis D Me p sons D per 40 0 pao CARTRIDGE CONSOLE 20
5. gi dE 0100000000 p 1110 a p p 111000100000 n 4 9 11 i B B E B s s 0000000000 B B 0011000070 oooooooooooo 10010007 omanan 0100010000100 0000000000 000000000000 aoan DUOIUDDUUUU 0000000000 0100000000 d Ilp aaan 00010000 T T Ex 001100 t T 0100000000 jam 1 B E TW TET Lana d 0000000000 0101001010100 0000000000 0000000000 d 0000000000 p Er 0000000000 0000000000 an 0000000000 0000000000 In gt 0000000000 nnn nnnnnnn p gt 0000000000 nmnnnnnnnnn ar 0000000000 oO 100 OOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOO OOOOOOOOOOOOOOOOOOOOOOOOO0 b A11 DRAM Processor Display Module View of Right Side Figure 6 37 TLS 216 Service Manual 6 72 Troubleshooting Figure 6 38 A11 DRAM Processor Display Module View of Upper Left Corner TLS 216 Service Manual 6 73 Trou
6. Figure 4 15 Test Hookup for Logic Trigger Check g Press MEASURE gt Select Measurement for Ch x main Repeatedly press the side menu button more until Frequency appears in the side menu Press Frequency Press High Low Setup main gt Min Max side 2 Confirm the trigger system is within time accuracy limits for main nonsequence logic triggering a Set the output of the sine wave generator for a 84 7 MHZ four division sine wave on screen Press SET LEVEL TO 50 Press TRIGGER MENU gt Mode amp Holdoff main gt Normal side Press Type Pulse pop up gt Trig When main Press the side menu button Width See Table 4 3 Use the numeric keypad to enter the width dictated by the current time base setting Use the number in the Upper Limit or Width Setting column Table 4 3 Settings For Logic Trigger Accuracy Checks Time Base Setting 10 ns 250 ns 2 5 us Upper Limit or Initial Generator Low Frequency Width Setting Setting Limit 8 ns 84 7 MHz 56 2 MHz 200 ns 3 13 MHz 2 27 MHz 2 us 263 kHz 244 kHz TLS 216 Service Manual Performance Tests TLS 216 Service Manual Slowly decrease the output frequency until the TRIG D LED on the front panel turns off The READY LED should be lit Check that the C1 Freq readout is greater than the Low Frequency Limit listed in Table 4 3 Set the generator output frequency to the next Initial Generator Setting
7. Threshold i2mv ode Holdoff C 2 Co Co Co Co Figure 4 19 Measurement of Trigger Sensitivity 3 Confirm the AUX Trigger input a Remove the 10X attenuator from the hookup Connect a BNC T connector to the AUX TRIGGER input on the rear panel Connect one side of the T connector to the generator through a 50 2 coaxial cable connect the other side of the T connector to channel 1 through a 50 Q coaxial cable an SMA to BNC adapter and a coaxial adapter See Figure 4 20 4 48 TLS 216 Service Manual Performance Tests TLS 216 Service Manual To BNC T connector on AUX Trigger Input on Rear Panel Medium Frequency Sine Wave Generator Output SMA to BNC From BNC T Adapter connector on AUX Trigger Input Figure 4 20 Test Hookup for AUX TRIGGER Input Sensitivity Check Press GROUP MENU Group Definition main gt First Channel side Use the numeric keypad to set the first channel to 1 Press GROUP MENU Group Definition main gt Last Channel side Use the numeric keypad to set the last channel to 1 Set the vertical SCALE to 1 V Press TRIGGER MENU gt Source main gt Channel side Use the numeric keypad to set the channel index to 1 Press SET LEVEL to 50 Press MEASURE Select Measrmnt for Ch x main Press the
8. 4 54 Figure 5 1 Accessing the Protection Switch 5 8 Figure 5 2 Five and Ten Percent Luminance Patches 5 10 Figure 6 1 External Modules 6 12 vi TLS 216 Service Manual Table of Contents TLS 216 Service Manual Figure 6 2 Outer Chassis Modules 6 13 Figure 6 3 Inner Chassis Modules 6 14 Figure 6 4 Knob 1 6 17 Figure 6 5 Line Fuse and Line Cord Removal 6 18 Figure 6 6 Rear Cover and Cabinet Removal 6 21 Figure 6 7 Front Cover Trim Ring Menu Buttons and Input Panel Removal Front Cover not Shown 6 22 Figure 6 8 A12 Front Panel Assembly Removal 6 24 Figure 6 9 Disassembly of Front Panel Assembly 6 25 Figure 6 10 Cabinet Modules Removal 6 28 Figure 6 11 Input Cable Assembly Routing 6 30 Figure 6 12 Cable Tie Removal for New Installations 6 31 Figure 6 13 A14 D1 Bus and Analog Power and Digital Power Cables Removal ceire sien 50 eu ne esee 6 34 Figure 6 14 Circuit Board Assembly Removal 6 35 Figure 6 15 Remove Circuit Board From Assembly 6 36 Figure 6 16 A11 Processor Display Removal 6 38 Figure 6 17 Board Bracket
9. PONI EIS the right side of the logic scope Tum fuse Does fuse Disconnect the line cord A from its power source on the principal power switch again Replace the Low Voltage Power S upply Without a power supply load check the power supply voltages on the A17 Main LV Power Supply module see Table 6 6 and Figure 6 28 If neces Does the sary temporarily short pins 3 and 5 of logic scope J 5 to toggle the On Standby Control work circuit The Low Voltage Power Supply is ok Are the voltages ok Perform the Primary troubleshooting procedure No Figure 6 29 16 Low Voltage Power Supply Module Isolation Troubleshooting Procedure 6 64 TLS 216 Service Manual Troubleshooting Does the Does it power on Is logic scope have acta and the fan adequate ventilation as 7 65 Replace the A10 ass all the working specified in Section 2 Acquisition module diagnostics Operating Information on page 2 4 Turn off the principal power switch Disconnect the line cord from its power source Remove the logic Create adequate scope rear cover and cabinet using ventilation the Rear Cover and Cabinet removal procedure fan s connector securely attached to 20 on the All DRAM Processor Display module See Figure Connect the fan Unplug the fan power on the logic scope and probe J 20 Is there 25 V a
10. Table 6 3 Internal Inspection Check List 1 3 1 3 1 5 1 5 1 6 1 6 1 9 1 9 1 10 1 10 1 11 1 13 1 13 1 14 1 14 1 14 1 14 1 15 1 15 Table of Contents Table 6 4 Tools Required for Module Removal 6 11 Table 6 5 Normal Supply Voltages Measured on J26 and J27 on the A11 DRAM Processor Display Module 6 63 Table 6 6 No Load Supply Voltages Measured on J5 and J6 on the A16 Low Voltage Power Supply Module 6 63 Table 7 1 International Power Cords 7 1 Table 7 2 Standard Accessories 7 2 Table 7 3 Optional Accessories 7 3 Table 7 4 Accessory Software 7 4 TLS 216 Service Manual Service Safety Summary Do Not Service Alone Disconnect Power Use Caution When Servicing the CRT Use Care When Servicing With Power On X Radiation TLS 216 Service Manual Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present To avoid electric shock disconnect the main power by means of the power cord or if
11. ISO 2000000 Figure 6 16 A11 Processor Display Removal 6 38 TLS 216 Service Manual Removal and Installation Procedures Top Cover and Board Brackets Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 and if removing any board mount a flat bladed screwdriver Item 5 b Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 Do the procedures A74 D1 Bus and Analog Power and Digital Power Cables page 6 33 and A11 Processor Display Board page 6 37 to remove those modules 2 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its front is facing you 3 Remove the top cover Remove the 12 screws securing the top cover to the main chassis then slide it back until its front edge clears the retainers in the front subpanel Lift the top cover away to complete removal 4 Remove the board mount s From the top side of the top cover use the flat bladed screwdriver to pry up the retainer lug until it clears the slot in the front cover While holding the lug clear of the slot push the mount towards the rear until it releases See Figure 6 17 When reinstalling be sure to align the lug properly and be sure it snaps into its slot Figure 6 17 Board Bracket Removal TLS 216 Service Manual 6 39 Removal and Install
12. If steps 1 and 2 do not remove all the dust or dirt the logic scope may be spray washed using a solution of 75 isopropyl alcohol by doing steps 4 through 8 Gain access to the parts to be cleaned by removing easily accessible shields and panels see Removal and Installation Procedures Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the majority of the alcohol to evaporate Use hot 120 F to 140 F deionized water to thoroughly rinse them Dry all parts with low pressure deionized air 6 7 Inspection and Cleaning 8 Dry all components and assemblies in an oven or drying compartment using low temperature 125 F to 150 F circulating air Lubrication There is no periodic lubrication required for this logic scope 6 8 TLS 216 Service Manual E ee Removal and Installation Procedures This section contains procedures for removal and installation of all mechanical and electrical modules Any electrical or mechanical module assembly or part listed in Section 10 of this manual is a module Preparation Please Read Safety Summary found at the beginning of this manual Also to prevent possible WARNING Before doing this or any other procedure in this manual read the injury to service personnel or damage to the logic scope components read Before Servicing in the introduction Supplying Operating Power in Section 2 and Preventing ESD in this section Th
13. Did the Of the two the Front Panel FP Proc Interface test must have failed Replace tests the A12 Front Panel module fail Perform the Processor Front Panel troubleshooting procedure Regardless N Perform the qi amm Are there The logic scope should be ok Run fast BT troubleshooting procedure the extended diagnostics Diagnostics on page 6 57 explains how to do this and verify that all the modules pass any failures with the Acquisition and or its interfaces No Perform the Acquisition trouble shooting procedure Figure 6 27 Module Isolation Troubleshooting Procedure 6 62 TLS 216 Service Manual Troubleshooting TLS 216 Service Manual Table 6 5 Normal Supply Voltages Measured on J26 and J27 on the A11 DRAM Processor Display Module see 6 37 on page 6 72 Supply Lower Limit Upper Limit Ground J 26 or J 27 15 415 1 VA 27 pin 5 5 0 V 5 2 V 5 1 VB 27 pin 17 5 0 V 5 2 V 25 V J 27 pin 1 23 5 V 27 5 V 5 V J 26 pin 39 44 9 V 51V 5 1 V J 26 pin 17 4 9 V 5 2 V 15 V J 26 pin 11 14 7 V 15 3 V 15 V J 26 pin 7 14 7 V 15 3 V Table 6 6 No Load Supply Voltages Measured on J5 and J6 on the A16 Low Voltage Power Supply Module Supply Lower Limit Upper Limit Ground J 5 or J 6 pin 15 5 1 VA J 6 pin 5 4 95 V 5 25 V 5 1 VB J 6 pin 17 4 95 V 5 25 V 25 V J 6 pin 1 23 5 V 27 5 V
14. Figure 10 2 Outer Chassis Modules 10 7 TLS 216 Service Manual Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No 10 3 1 640 0077 02 1 DISPLAY MODULE COLUMBIA FULL COLOR 80009 640 0077 02 A30 2 407 4099 00 1 BRKT PWR SPLY LVPS POLY CARBONATE 80009 407409900 3 348 1300 00 2 SHLD GSKT ELEK 3 165 L CLIP ON 30817 0098 0564 09 03 4 620 0063 00 1 POWER SUPPLY 90 275 VAC 45 TO 440 HERTZ 400 W 80009 620006300 A16 5 441 2017 01 1 CHASSIS SCOPE MAIN W SHIELD 0J 9P9 ORDER BY DESC 6 386 6403 00 1 SUBPANEL FRONT TK1465 386 6403 00 A16 Figure 10 3 Inner Chassis Modules 10 8 TLS 216 Service Manual Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No 10 4 1 407 4460 xx 1 BRKT DISK DRIVE ALUMINUM 0J 9 9 407 4230 00 2 211 0840 00 2 SCREW MACHINE M2 6 X 0 45MM PITCH X 4 0L 0 01 26CAMXPHY 3 211 0730 00 2 SCREW ASSEM WSHR 6 32 X 0 375 PNH STL CD PL 0 01 ORDER BY DESC 4 174 2964 00 1 WIRE ELECTRICAL FLAT FLEX UMPER 26 COND 300V 1DM20 1 00MM 26 7 B 5 276 0849 00 1 CORE EM EMI SUPPRESS RBN CABLE 1JJ 96 BFS33 5X8X6 5 6 407 4230 00 1 BRKT DISK DRIVE ALUMINUM 0J 9 9 407 4230 00 7 337 3935 00 1 SHLD DISK DRIVE 0J R05 337 3935 00 8 119 5677 01 1 DISK DRIVE FLOPPY 3 5 INCH
15. 2 24 To Find More Information 2 24 Theory of Operation Circuit Description 3 1 Logic Conventions ue e RR E Rp Ba Sree es 3 1 Module Overview RR OP AS ORE GRACE RU RS 3 1 Performance Verification Introduction Ge eee eee ee 4 1 Option IS 2 heey pen Der MU pe ene a 4 1 Operating Information 4 2 Conventions Pel edie plate nep Ede adu 4 2 Brief Procedures 5 05026 necne Gn He E CR ERR E Pos meam 4 5 Self Tests MEET 4 5 Verify Internal Adjustment Self Calibration and Diagnostics 4 5 Verify Probe Function and Calibration 4 6 Functional Tests i ils paa Lee LR gp ge 4 7 Verify All Input Channels 4 8 Verify Time Base coeca eia pee pk ree opes 4 10 Verify the Main and Delayed Trigger Systems 4 11 Verify the File 4 13 Performance Tests acetic euam ee harm ees AR 4 15 Prerequisites o UD E Se ET aU Oe e EAMUS 4 15 Equipment Required 4 15 Test Record OAH e f Ec ST 4 16 Preparation Clear Probe Calibrations 4 24
16. Software Based Adjustments Display Assembly Adjustment Rotation Brightness and Contrast Adjustment Maintenance Information Procedures Not In This Section Preventing ESD Precautions Susceptibility to ESD Inspection and Cleaning General Inspection and Cleaning Procedures 4 25 4 25 4 26 4 31 4 34 4 36 4 36 4 39 4 39 4 45 4 51 4 51 4 53 I l ioi d sube os 92 6 5 Table of Contents Options Inspection 6 5 Cleaning Procedure Exterior 6 6 Inspection Interior 6 6 Cleaning Procedure 6 7 L bricati n RR OR RR UR ROSA S ae Ade LR 6 8 Removal and Installation Procedures 6 9 Preparation Please Read 6 9 Iast of Modules cesse hee SERV ERR eh ee eS 6 10 General Instructions 6 10 Summary of Procedures 6 10 Equipment Required 6 1
17. or 5 25 inch 1 2 M m A GPIB board National Instruments GPIB PCII GPIB PCIIA or A PC GPIB Package that includes the PCII IIA is available Tektronix part number S3FG210 m Suitable keyboard and monitor Installation of a math coprocessor in your system is strongly recommended to decrease the time required to adjust the logic scope The equipment list starting on page 5 4 lists all test equipment required to adjust this logic scope The following topics cover what is required of you when adjusting the logic scope and what is done by the software Also the performance of individual adjustments is discussed When using the adjustment software you will not be required to manually adjust any circuits As you run the calibration tests the software adjusts the circuits using external standards you provide in response to prompts on the computer screen Your role then is to provide those test signals and to prompt the computer to continue TLS 216 Service Manual Adjustment Procedures Complete Adjustment Individual Adjustments Partial Adjustment Adjustment After Repair TLS 216 Service Manual A complete adjustment is the performance of all adjustments on the TLS 216 Adjustment Software in sequence Throughout this section complete adjustment is used as just defined The adjustment software contains three classes of adjustments as shown in Table 5 1 Each class contains one
18. 4 Press the main menu button Trigger Position 5 Press the side menu button Set to 20 Sometimes you may have to make a selection from a popup menu Press TRIGGER MENU gt Type main gt Edge pop up In this example you repeatedly press the main menu button Type until Edge is highlighted in the pop up menu Related Manuals The following documents are related to the use or service of the logic scope The TLS 216 User Manual contains a tutorial to quickly show you how to operate the logic scope and an in depth discussion of how to more completely use its features Applications are also discussed The TLS 216 Programmer Manual Tektronix part number 070 8835 00 describes using a computer to control the logic scope through the GPIB interface The TLS 216 Reference Tektronix part number 070 8833 00 gives you a quick overview of how to operate your logic scope TLS 216 Service Manual XV Preface xvi TLS 216 Service Manual Introduction Before Servicing Strategy for Servicing TLS 216 Service Manual This introduction describes what you should do before attempting servicing of the TLS 216 Logic Scope outlines the strategy for servicing that this manual supports and lists service that you can obtain from Tektronix This manual is for servicing the TLS 216 Logic Scope To prevent injury to yourself or damage to the logic scope do the following before you attempt service m Besure you are a qualified service per
19. 5 V J 5 pin 39 0 59 V 0 81 V 5 1 V J 5 pin 17 0 39 V 0 61 V 15 V J 5 pin 11 1 05 V 1 75 V 15 V J5 pin 7 1 05 V 1 75 V J6 A16 Low Voltage P ower Supply Module Figure 6 28 Power Supply Voltage Measurement Locations 6 63 Troubleshooting Use this procedure to determine if an logic Scope problem is caused by the Low Voltage Power Supply Connect the logic scope to the correct power source Tum on the principal power switch Does the logic scope power on all the diagnostics pass but sometime later it powers off on its own The logic scope may have pow Yes off because it over heated Wait 5 minutes and power on the logic scope No Turn off the principal power switch Disconnect Are the line cord from its power source Remove the the front panel logic scope rear cover and cabinet using the lights Rear Cover and Cabinet removal procedure on Connect the logic scope to the correct power source Turn on the principal power switch Prass Check the power supply voltages on the ON STBY 26 and 27 on the All DRAM Proces button Are the sor Display module see Table 6 5 and front panel Figure 6 37 If necessary temporarily lights on short pins 3 and 5 of 26 to toggle the On Standby Control circuit Are the voltages ok Yes Is fuse blown Turn off the principal power switch n Remove the two power cables from Replace
20. C 2 as any Figure 4 12 Measurement of Channel Delay e Rotate the General Purpose knob to align one cursor to the time reference point of the left most waveform edge and the other cursor to the time reference point of the right most waveform edge Press SELECT to switch between the two cursors See Figure 4 12 4 35 Performance Tests f Read the measurement results at the A cursor readout not the readout on screen g Check that the cursor readout on screen is x 200 ps h Leaving one half of the test hookup installed on channel 1 move the other half to the next channel in sequence for example from channel 2 to channel 3 i Press GROUP MENU Group Definition main gt First Channel side to increment First Channel to next channel to be checked Press the side menu button First Channel again if necessary to increment the first channel j Repeat substeps c through i until you have checked all 16 channels substeps h and i will not be necessary for channel 16 3 Disconnect the hookup Disconnect the hookup at the input connectors of channels 1 and 16 Time Base System Check This procedure checks either directly or indirectly those characteristics that relate to the Main and Delayed time base system and are listed as checked under Warranted Characteristics in the Specifications section Check Accuracy for Equipment Required One time mark generator
21. See Figure 2 5 For groups displayed in Analog mode you can remove the display of all but the selected channel To toggle between a display of all the channels in a group and a display of only the selected channel do the following steps 1 Press GROUP MENU Display main gt Analog side 2 Press Analog side again to toggle between the All and Select settings Note that the logic scope replaces the volt division setting with the word Select when you toggle to that setting 2 23 Operating Instructions for Waveform Groups To Define Group Thresholds and Height To Remove a Group from the Display If displaying waveform groups in BusForm or Timing Diagram display mode you must set the display thresholds and group height To set these parameters for the currently selected group do the following steps 1 Press GROUP MENU Display Thresholds main 2 Press Vhigh min and use the general purpose knob or keypad to set the voltage level the waveform group must exceed to be displayed as a HIGH 3 Press Vlow max and use the general purpose knob or keypad to set the voltage level the waveform group must not exceed to be displayed as a LOW 4 Press Display Thresholds main Height in Divs side and use the keypad to set the height of all waveforms in the currently selected group NOTE Although the Vertical Scale knob does not size BusForm and Timing Diagram mode groups on screen you should set it to
22. a Confirm that the following statements are true for the selected channel W A square wave probe calibration signal about one division in amplitude is on screen See Figure 4 4 Tek Run 100kS s Sample Last Channel 16 Group Defn First Channel electe anne ows hanne Square Wave Signal Selected Channel Other Channels Show DC Baseline 16 1 500mv M S00ys Edge Delete B B 2 Group Grou Display agic Displa vertical Cal Probes ENT ds Controls Pass Figure 4 4 Square Wave Calibration and DC Baseline Signals m The vertical POSITION knob moves all signals up and down the screen when rotated m Turning the vertical SCALE knob counterclockwise decreases the amplitude of the waveform on screen this may untrigger the signal turning the knob clockwise increases the amplitude and returning the knob to 500 mV returns the amplitude to about one division TLS 216 Service Manual 4 9 Brief Procedures 4 10 Verify the Time Base Press SHIFT then press ACQUIRE MENU Use the side menu to select in turn each of the three acquisition modes and confirm that the following statements are true Refer to the icons at the left of each statement as you confirm those statements m Sample mode displays an actively acquiring waveform on
23. il TLS 216 Service Manual Table of Contents Signal Acquisition System Checks Check Accuracy of Offset Zero Setting Check DC Gain and Voltage Measurement Accuracy Check Analog Bandwidth Check Delay Between Channels Time Base System Check Check Accuracy for Long Term Sample Rate Delay Time and Delta Time Measurements Trigger System Checks Check Accuracy for Logic Triggering Check Accuracy Trigger Threshold Sensitivity Edge Trigger Output Signal Checks Check Outputs Probe Check Outputs Main and Delayed Trigger Adjustment Procedures Maintenance TLS 216 Service Manual Adjustment Procedures Requirements for Performance Personnels so sisi Warm Up Period ACCESS REAL SYSTEM Optional Peripherals Test Equipment Usage ccc fea Performing the Adjustments Complete Adjustment Individual Adjustments Partial Adjustment Adjustment After Repair Adjustment Dependencies Equipment Required Adjustment Instructions Hardware Installation Software Installation
24. 2 10 Select the group containing the waveform source s using the group buttons 8 Locate the front panel control and adjust the function to be set To adjust vertical position and scale of the selected group rotate the vertical position and scale knobs 1 The logic scope must be in Analog display mode to vertically size waveforms on screen see 7o Select a Group Mode on page 2 23 To adjust horizontal position and scale of the selected group rotate the horizontal position and scale knobs 2 To stop the logic scope from actively acquiring waveforms press the button RUN STOP 3 Press RUN STOP again to toggle to actively acquiring To adjust trigger level edge and pulse trigger type settings only rotate the THRESHOLD knob 6 or press the SET LEVEL TO 50 button 6 Level adjustment occurs on the trigger source selected in the trigger menu To force a triggering of an acquisition press FORCE TRIGGER 5 other functions must be set using menus To set such functions do the following steps 1 Press the button corresponding to the function to be set Push SHIFT 4 before pressing the button if the function to be set is highlighted in blue on the front panel Push the front panel button that corresponds to the menu containing the function A main menu 14 for selecting among related functions appears Example Push TRIGGER MENU Note the two labels the top label is a function to choose from the bottom
25. 2 inputs and under control of the processor system attenuation of input signals It attenuates ampli fies the input signals samples them converts them to digital signals and 3 1 Circuit Description Voltage Controlled Oscillator VCO Tube Assembly Front Panel controls the acquisition process under direction of the processor system The acquisition system includes the trigger acquisition timing and acquisition mode generation and control circuitry D1 Bus The acquisition system passes the digital values representing the acquired waveform through the A14 D1 Bus to the A11 DRAM Processor Dis play board This happens after a waveform acquisition is complete if the digital signal processor in the processor system requests the waveform Processor System The processor system contains a 68020 microprocessor that controls the entire instrument It includes the firmware It also includes a GPIB interface You can reprogram the firmware from a remote controller using the GPIB and an external software package The processor also includes a digital signal processor This signal processor processes each waveform as directed by the system processor Waveforms and any text to be displayed are passed on to the display system The All DRAM Processor Display board contains both the processor and display systems Display System Text and waveforms are processed by different parts of the display circuitry The display system s
26. Instructions for rackmounting the Logic Scope are shipped with the option 1R With this option Tektronix ships a Tektronix Phaser 200e 300 dpi thermal transfer color printer It handles letter or A4 size Tektronix thermal paper and transparencies It can handle laser copy plain paper with the ColorCoat Transfer Roll Tektronix ships a Certificate of Calibration which states this instrument meets or exceeds all warranted specifications and has been calibrated using standards and instruments whose accuracies are traceable to the National Institute of Standards and Technology an accepted value of a natural physical constant or a ratio calibration technique The calibration is in compliance with US MIL STD 45662A This option also includes a test data report for the instrument The following standard accessories are included with the logic scope Table 7 2 Standard Accessories Accessory Part Number User Manual 070 8834 00 Programmer Manual 070 8835 00 Reference 070 8833 00 TLS 216 Service Manual Options and Accessories Table 7 2 Standard Accessories Cont Accessory Part Number Performance Verification and Specifications Technical 070 8832 00 Reference Front Cover 200 3696 00 U S Power Cord 161 0230 01 Probes 2 5 pf FET Qty 16 P6240 single unit Y Leadset Qty 2 pkgs of 10 Used with probe 020 2008 00 SMT KlipChip Qty 3 pkgs of 12 Used with probe 020 1386 01 One to Two Adapter
27. TLS 216 Service Manual Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No STANDARD ACCESSORIES 10 6 1 161 0104 05 1 CA ASSY PWR 3 1 0MM SQ 250V 10A 2 5 M RTANG 53109 SAA 3 OD3CCFC3X OPTION A3 AUSTRALIAN 2 161 0104 06 1 ASSY PWR 3 1 0MM SQ 250V 10A 2 5 METER RTANG 3109 VIIGSOPO HO5VVF OPTION A1 EUROPEAN 3 161 0104 07 1 CA ASSY PWR 3 1 0MM SQ 240V 10A 2 5 METER RTANG 53109 ORDER BY DESC OPTION A2 UNITED KINGDOM 4 161 0104 08 1 ASSY PWR 3 18 AWG 250 10A 98 INCH L RTANG 2W 733 ORDER BY DESC OPTION A4 NORTH AMERICAN 5 161 0167 00 1 CA ASSY PWR 3 0 75MM SQ 250V 10A 2 5 M RTANG 53109 ORDER BY DESC OPTION A5 S WITZERLAND 343 0170 00 1 RTNR CA TO CA U W 0 25 OD CABLES 0 R05 ORDER BY DESC OPTIONS A1 A2 A3 A4 A5 1 ACCESSORY PKG 16 EA P6240 ACTIVE PROBEW ACCY 070 8832 00 1 MANUAL TECH PERF VERIFICATION SPECIFICATION 80009 070883200 070 8833 00 1 MANUAL TECH REFERENCE 80009 070883300 070 8834 00 1 MANUAL TECH USER 80009 070883400 070 8835 00 1 MANUAL TECH PROGRAMMERS 80009 070883500 Figure 10 6 Accessories 10 12 TLS 216 Service Manual Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No OPTIONAL ACCESSORIES 003 1457 01 1 DRIVER MODIFY THE T 20 TORX TK1465 00
28. Disk the logic scope will assign the name TEK00000 SET to your file If you ran the procedure again the logic scope would increment the name and call the file TEK00001 SET Press the side menu button Save To Selected File Set the horizontal SCALE to 500 us and then use the vertical POSI TION knob to place the channel 1 baseline trace two divisions above center screen Press Recall Saved Setup main From File side Turn the general purpose knob to select the file to recall For example if you followed the instructions above and used a blank disk you had the logic scope assign the name 00000 5 to your file Press the side menu button Recall From Selected File Verify that the logic scope retrieved the saved setup from the disk Do this by noting that the horizontal SCALE again reads 250 us and the channel 1 baseline waveform is again vertically positioned near center screens as when you saved the setup 3 Remove the test hookup Remove the disk from the disk drive TLS 216 Service Manual 4 13 Brief Procedures 4 14 TLS 216 Service Manual Performance Tests Prerequisites Equipment Required Table 4 1 Test Equipment Item Number and Description l Attenuator 10X three required This section contains a collection of procedures for checking that the TLS 216 performs as warranted The procedures appear in four logical groupings Signal Acquisition Syst
29. Inp nn Lo Figure 6 7 Front Cover Trim Ring Menu Buttons and Input Panel Removal Front Cover not Shown STOP DO NOT touch the carbon contact points on the menu buttons installed in the trim ring Also do not touch the contacts on the flex circuit exposed when you remove the trim ring TLS 216 Service Manual Removal and Installation Procedures A12 Front Panel Assembly and Probe Calibrator TLS 216 Service Manual 4 Remove the trim ring Grasp the trim ring by its top edge and pry it up and lift it forward to snap it off of the front subpanel If servicing the menu buttons lift them out of the trim ring When reinstalling reinsert the menu buttons align the trim ring to the front subpanel and press it back on STOP DO NOT touch the contacts on the flex circuit exposed when you remove the input panel in the step that follows 5 Remove the input panel Gently pry using your fingers the snap off snap on input panel away from the front subpanel to remove it When reinstalling use your hands to press it back on 6 Reinstallation Do in reverse steps 3 5 to reinstall the input panel menu buttons trim ring and the front cover following the reinstallation instructions found in each step NOTE This procedure includes removal and reinstallation instructions for the front panel and front panel buttons Unless either of those modules are being serviced do not do step 5 Fu
30. and ifthe 11 DRAM Processor 45V and 511 41V Display module is not connected to respectively respectively the power supply Probe 26 pins 7 2 11 17 and 35 and J 27 pin 17 Perform the Power Su trouble There must be a problem with the com D Shooting munication link between the A11 DRAM th oes Processor Display and the 12 Front e Front Pane Panel The A12 FrontP module has Work correctly Y most likely failed R eplace this module now ae Replace the A11 DRAM Yes Processor Display module Figure 6 34 Processor Front Panel Troubleshooting Procedure gt gt TLS 216 Service Manual 6 69 Troubleshooting Perform Signal Path Calibration and initialize setup using the Recall Factory Setup menu item Use an oscilloscope to verify that probe Probe calibration signals of 0 5V and 1kHz at the PROBE CALIBRATION outputs on the front panel outputs Remove the Probe Calibrator Compensation signal see procedure page 6 23 available at all 16 After ensuring proper power to the A12 Front Panel Assembly available at SIG terminal replace 12 Front Panel on A12 Front Panel Assembly See processor front Assembly panel procedure on page 6 69 calibration signal Replace the Probe Calibrator Attach a probe to the PROBE CALIBRATION signal located on the front panel Connectthe probe to the Channel
31. 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 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 or c to service a product that has been modified or integrated with other products when the effect of such modifica
32. perform the following steps 1 Press any of group selection buttons GROUP 1 through GROUP 4 on the right side of the display Or press SHIFT and then press any of group selection buttons GROUP 5 through GROUP 8 The MORE selection button allows you to select internally stored Ref groups of saved waveforms for display 2 Press Group Definition main First Channel side Use the key pad to select the first channel in the group 3 Press Last Channel side Use the key pad to select the last channel in the group 4 Press Selected Channel side Use the key pad to designate the selected channel in the group Several operating characteristics can be observed when you perform the steps just listed Selecting a group not yet defined creates the group using a single channel The logic scope uses the lowest numbered channel not yet assigned to a group When defining a first channel or last channel the logic scope ignores the input of any channels belonging to another group m Attempting to increase the first channel to a higher numbered channel than that set for last channel sets both the first and last channels to the higher numbered channel This operation results in a single channel group m Attempting to decrease the last channel to a lower numbered channel than that set for first channel sets both the first and last channels to the lower numbered channel This operation results in a single channel group You ca
33. redress cables as necessary When sliding the cabinet on be sure that the front edge of the cabinet aligns with the groove containing the EMI shield on the front casting Be sure that the ridge around the rear chassis slides into the groove containing a second EMI cable on the rear of the cabinet When reinstalling the four screws at the rear panel tighten them to 16 foot Ibs torque See the procedure Line Fuse and Line Cord to reinstall the line cord which completes the logic scope reassembly TLS 216 Service Manual Removal and Installation Procedures Figure 6 6 Rear Cover and Cabinet Removal Front Cover Trim Ring Menu Buttons and Input Panel 1 Assemble equipment and locate modules to be removed No tools are needed Locate the modules to be removed in the locator diagram External Modules Figure 6 1 TLS 216 Service Manual 6 21 Removal and Installation Procedures 6 22 2 Orient the logic scope Set the logic scope so its rear is down on the work surface and its bottom is facing you 3 Remove the front cover Grasp the front cover by its left and right edges and snap it off of the front subpanel When reinstalling align and snap back on Trim Ring when removing the trim ring grasp its back edge and vigorously flex it upward before pulling it forward Menu Buttons SSS n
34. side i Wait Signal path compensation runs in about 16 minutes While it progresses a clock icon shown at left is displayed on screen j Verify that the word Pass appears under Signal Path in the main menu See Figure 4 2 2 Return to regular service Press CLEAR MENU to exit the system menus Equipment Required Sixteen P6240 probes Time Required Approximately 15 minutes STOP If your logic scope was ordered configured as Option IS it was shipped without the 16 probes included with the standard configured logic scope You must have the probes to do the following steps and may wish to skip verification of probe function Read the information under Option 1S on page 4 1 before continuing TLS 216 Service Manual Brief Procedures Functional Tests TLS 216 Service Manual Procedure 1 Connect the probes and preset the instrument controls a Connect 16 P6240 probes to the logic scope one to each channel b Connect each probe tip to a PROBE CALIBRATION output terminal order is not important ensure correct orientation of each probe ground pins on the bottom Press save recall SETUP gt Recall Factory Setup main gt Ok Confirm Factory Init side 2 Runthe probe calibration routine on all probes a Press GROUP MENU Group Definition main gt Last Channel side Use the numeric keypad to set the last channel to 16 b Press the main menu button Cal Probes then press the si
35. 1 addresses after repair adjustment and the interval between periodic adjustments It contains a procedure for adjusting the internal circuits of the logic scope Diagrams beginning on page 9 1 contains a block diagram using individual modules as blocks and an interconnection diagram showing connections between the modules Replaceable Parts List beginning on page 10 1 lists all field replaceable modules by part number 6 1 Maintenance Information Preventing ESD 6 2 AN Precautions Susceptibility to ESD CAUTION Static discharge can damage any semiconductor component in this logic scope When performing any service which requires internal access to the logic scope adhere to the following precautions to avoid damaging internal modules and their components due to electrostatic discharge ESD 1 2 Minimize handling of static sensitive modules Transport and store static sensitive modules in their static protected containers or on a metal rail Label any package that contains static sensitive modules Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules Do service of static sensitive modules only at a static free work station Nothing capable of generating or holding a static charge should be allowed on the work station surface Handle circuit boards by the edges when possible Do not slide the modules over any surface Avoid han
36. 1 inputon the front panel and set Group 1 to display Channel 1 Set trigger type to edge and trigger source to Channel 1 Press Set Level to 5096 channel display a Note problems with triggered waveform channel and continue with an amplitude of until all channels approximately have been tested 500 mV Repeat procedure for all 16 channels set Group 1 to display channel under test and trigger source to the displayed channel Have all channels been tested No Test next channel Do all channels display the correct Yes triggered trace Are there symptoms Yes to indicate acquisition board still has faults No Figure 6 35 Acquisition Troubleshooting Procedure 6 70 TLS 216 Service Manual Troubleshooting Are Problem with one or more all 16 channels channels showing faults P ulse Pattern logic trigger modes performance verification test Attach a probe to the PROBE CALIBRATION signal located on the front of the Logic Scope Connect the probe to channel one on the front panel and set Group 1 to display channel 1 Set trigger type to Pulse Width and set upper limit to 600 iS ec and set lower limit to 2 Press Set Level to 50 State logic trigger mode performance verification test Y Set trigger type to State and clock source to Ch 1 Define pattern as Ch 1 Hi all other pattem bits X don t
37. 2 898 V 3102V CH6 42 1 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH7 42 1 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH8 12 1 V Offset 42 898 V 1 102 V 2 7 V Offset 2 898 V 3102V CH9 42 1 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH10 427 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V 427 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH12 427 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH13 427 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH14 22 V Offset 2 898V 13 102 V 2 1 V Offset 24808V ___ 3 102 V CH15 22 V Offset 4 898V fo hl ______ 13 102 V 2 1 V Offset 24808V 3 l ___ 3 102 V CHl6 42 V Offset 4898V fe 13 102 V 2 7 V Offset 2 898 V 3102V TLS 216 Service Manual Performance Tests TLS 216 Test Record Cont Instrument Serial Number Certificate Number Temperature RH 96 Date of Calibration Technician Performance Test Minimum Incoming Outgoing Maximum Analog Bandwidth CH1 Pk Pk Reading CH2 Pk Pk Reading N A CH3 Pk Pk Reading N A CH4 Pk Pk Reading N A CH5 Pk Pk Reading N A CH6 Pk Pk Reading N A CH7 Pk Pk Reading N A CH8 Pk Pk Reading N A CH9 Pk Pk Reading N A CH10 Pk Pk Reading N A CH11 Pk Pk R eading N A CH12 Pk Pk Reading N A CH13 Pk Pk Reading N A CH14 Pk Pk Reading NA
38. 3 Wait The internal diagnostics do an exhaustive verification of proper logic scope function This verification will take about two minutes When finished the logic scope will display a report of any bad modules and or interfaces 6 57 Troubleshooting Firmware Updates The TLS 216 Firmware updates are easy to do Simply install the Firmware disks on your PC and follow the instructions in the README file located on the first disk NOTE You must set the Protection switch to the unprotected position before updating the Firmware Figure 6 25 shows how to set the switch After loading the Firmware be sure you set the switch back to the protected position and cycle power If you want to order a Firmware update see Optional Accessories Mechanical Parts List in Section 10 for the part number Figure 6 25 Accessing the Protection Switch 6 58 TLS 216 Service Manual Troubleshooting Troubleshooting Procedures Use the procedures that follow to aid in isolating failures to a module Be sure to read Diagnostics on page 6 57 You may also find the block and interconnect diagrams located in Section 9 helpful when troubleshooting this product TLS 216 Service Manual 6 59 Troubleshooting 1Note Diagnostic switch number 3 on 51001 Press on Pines 7 must be closed before beginning this proce hes ne aC dure See Diagnostics on page 6 57 Power off and remove the cover using Press
39. 30817 INSTRUMENT SPECIALTIES CO INC EXIT 53RT80 BOXA DELAWARE WATER GAP PA 18327 34416 PARSONS MFG CORP 1055 OBRIAN DR MENLO PARK CA 94025 1408 5Y921 COMAIR ROTRON A KLI COMPANY 2675 CUSTOMHOUSE COURT SAN YSIDRO CA 92173 50356 TEAC AMERICA INC 7733 TELEGRAPH RD PO BOX 750 MONTEBELLO CA 90640 6537 53387 MINNESOTA MINING MFG CO PO BOX 2963 AUSTIN TX 78769 2963 75915 LITTELFUSE INC SUB TRACOR INC 800 E NORTHWEST HWY DES PLAINES IL 60016 3049 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR PO BOX 500 BEAVERTON OR 97077 0001 TLS 216 Service Manual 10 3 Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No 10 1 1 200 3695 03 1 REAR COVER ASSY W LABEL 80009 200369503 2 161 0230 01 1 CABLE ASSY PWR 3 18 AWG 92 L SVT TAN TK2432 ORDER BY DESC STANDARD ACCESSORY 3 343 1213 00 1 CLAMP PWR CORD POLY MIDE TK1163 ORDER BY DESC STANDARD ACCESSORY 4 200 2264 00 1 CAP FUSEHOLDER 3AG FUSES 3629 FEK 031 1666 AMERICAN 200 2265 00 1 CAP FUSEHOLDER 5 X 20MM FUSES 3629 FEK 031 1663 EUROPEAN 5 159 0013 00 1 FUSE CARTRIDGE 3AG 6A 250V FAST BLOW 15915 312006 AMERICAN 159 0210 00 1 FUSE CARTRIDGE DIN 5 X 20MM 5AMP 250VSLOW BLOW 53629 TYPE FST 034 31 EUROPEAN 6 650 3039 00 1 CABINET ASSY 0 9 9 650 3039 00 7 367 0247 01 1 HANDLE CARRYING 11 54 L W CLIP 80009 367024701 8 200 2191 00 2 CAP RETAINER PLASTIC 0 R05 ORDER BY DESC 9 437 0
40. 37 A11 DRAM Processor Display Module View of Right Side 6 72 Figure 6 38 A11 DRAM Processor Display Module View of Upper Left Corner 6 73 Figure 6 39 A11 DRAM Processor Display Module View of Lower Left Corner 6 74 Figure 9 1 TLS 216 Block Diagram 9 2 Figure 9 2 TLS 216 Interconnect Diagram 9 4 Figure 10 1 Cabinet and Front Panel 10 5 Figure 10 2 Outer Chassis Modules 10 7 Figure 10 3 Inner Chassis Modules 10 8 Figure 10 4 Floppy Disk 10 9 Figure 10 5 10 11 Figure 10 6 Accessories 10 12 TLS 216 Service Manual Table of Contents List of Tables TLS 216 Service Manual Table 1 1 Warranted Characteristics Table 1 2 Warranted Characteristics Table 1 3 Warranted Characteristics Table 1 4 Warranted Characteristics Distribution System Table 1 6 Warranted Characteristics Input System Signal Acquisition System Time Base System Triggering System Table 1 5 Warranted Characteristics Output Ports and Power Table 1 7 Typical Characteristics Input System Table 1 8 Typical C
41. 4 Test Equipment Fixtures and Supplies Cont Item Number and Description 3 Attenuator 2X Minimum Requirements Ratio 2X impedance 50 connectors female BNC in put male BNC output Example Tektronix part number 011 0069 02 Software based Adjustments 4 Cable GPIB IEEE Std 488 1 1987 Tektronix part number Software based Adjustments IEEE Std 488 2 1987 002 0991 01 5 Coupler Dual Input Tektronix part number S oftware based Adjustments 067 0525 02 6 Cable Precision 50 Q 36 in male to male Tektronix part number S oftware based Adjustments Coaxial BNC connectors 012 0482 00 7 Connector Dual Female BNC to dual Tektronix part number Software based Adjustments Banana banana 103 0090 00 8 Generator Calibration 9 Generator DC Calibration 10 Generator Leveled Sine Wave Medium F re quency 11 Generator Leveled Sine Wave High Frequency 12 Magnifier 6X 13 Photometer High Amplitude pulse with variable amplitude of at least 60 V Variable amplitude to 104 V accuracy to 0 1 200 kHz to 250 MHz Variable amplitude from 5 mV to 4 Vp p into 50 Q flatness lt 3 95 harmonic content 274 harmonic down 30 dB from fundamental all others down 40 dB 250 MHz to 500 MHz Variable amplitude from 0 5 V to 4 Vp p into 50 Q 6 MHz reference harmonic content 219 harmonic down 25 dB from fundamental all others down 40 dB Standard Tool 0 1 to 200 Foot
42. Analog mode if vertical offset is set to zero Analog mode is the only group display mode that can be switched between a display of all the channels in a group and display of a single channel in a group 2 Tek Run 200kS s Sample Analog display mode All Group Mode Analog Mode EUN Indicator Points To Ground 2 BusForm Mode Indicator Points To Midlevel 31 q 8 me 17 Timing Diagram Mode Diagram Indicator Points To Midlevel of i a the Last Channel OFF 2 1 1 500mv M 250 Edge REF1I2 11 100v 250 16078 Grou Display ogic Displa Vertical Cal Probes Definition Family hresholds Controls Pass FOS OO S H Figure 2 5 Display Modes 2 22 TLS 216 Service Manual Operating Instructions for Waveform Groups To Select a Group Mode To Display Only the Selected Channel TLS 216 Service Manual BusForm displays each waveform in the group as one or more of three digital logic levels defined as HIGH LOW or indefinite between HIGH and LOW The level of each waveform displayed depends on how the instantaneous level of its input signal compares with two threshold levels that you define As with Analog mode all waveforms in the group have sup
43. INS 3 SERVICE PORT P38 26 PINS ANODE si ps 390 1704 VERT YOKE 16 J 170 16 PINS 16 PINS 3 J50 62 P aS 285 4 2 PINS J60 23 128 J7 0 iol P20 J280 gt V1000 4 100 PINS 150 2 gt lt 300 gt 1 5 3 ol J100 3 gt 26 26 PINS gt NC A32 VIDEO BOARD 40 PINS 305 gt 139 3 127 L HORIZ YOKE onis 2PINS gt 0 PIN J570 560 12 15 4041 12 PINS 4PINS gt 2 lt 4PIN SHUTTER DRIVER A31 gt BOARD Figure 9 1 TLS 216 Interconnect Diagram Cont TLS 216 Service Manual 9 5 Diagrams 9 6 TLS 216 Service Manual E 54 Replaceable Parts List This section contains a list of the modules that are replaceable for the TLS 216 Logic Scope Use this list to identify and order replacement parts Parts Ordering Information Module Replacement TLS 216 Service Manual Replacement parts are available from or through your local Tektronix Inc service center or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit 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 Instrument serial number m I
44. Power Supply Removal 6 48 A30 Display Assembly and Supply Fuse NOTE The display and the display driver board are a single module and must be removed and replaced as such They are listed as a single module in the Replaceable Parts List 1 Assemble equipment and locate modules to be removed Have handy a screwdriver with a size T 15 Torx 9 tip Items 1 and 2 Locate the modules to be removed in the locator diagram Inner Chassis Modules Figure 6 2 page 6 13 TLS 216 Service Manual Removal and Installation Procedures TLS 216 Service Manual 2 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its rear is facing you 3 Remove the high voltage fuse If you are servicing this fuse remove the fuse from its fuse holder on the display driver board Reverse the procedure to reinstall WARNING Display tube handling Use care when handling a display tube If you break a display tube it may implode scattering glass fragments with high velocity and possibly injuring you Wear protective clothing including safety glasses preferably a full face shield Avoiding striking the display tube with or against any object Display tube storage Store the display tube face down in a protected location placing it on a soft nonabrasive surface to prevent scratching the face plate 4 Remove the display tube Take the precautions outlined in the warning above Reference Figure 6 22 wh
45. Removal 6 39 Figure 6 18 A10 Acquisition Board Removal 6 42 Figure 6 19 Floppy Disk Removal 6 44 Figure 6 20 Rear Chassis Removal 6 46 Figure 6 21 A16 Low Voltage Power Supply Removal 6 48 Figure 6 22 Display Assembly Removal 6 50 Figure 6 23 Display Driver Board Removal 6 51 Figure 6 24 Front Subpanel Removal 6 53 Figure 6 25 Accessing the Protection Switch 6 58 Figure 6 26 Primary Troubleshooting Procedure 6 60 Figure 6 27 Module Isolation Troubleshooting Procedure 6 62 Figure 6 28 Power Supply Voltage Measurement Locations 6 63 Figure 6 29 A16 Low Voltage Power Supply Module Isolation Troubleshooting Procedure 6 64 Figure 6 30 Display Troubleshooting Procedure 6 66 Figure 6 31 Horizontal and Vertical Sync Signals 6 67 Figure 6 32 Video Signal with White Black Blanking Levels 6 67 Figure 6 33 Processor Acquisition Troubleshooting Procedure 6 68 Figure 6 34 Processor Front Panel Troubleshooting Procedure 6 69 Figure 6 35 Acquisition Troubleshooting Procedure 6 70 Figure 6 36 Acquisition Troubleshooting Procedure Cont 6 71 vii Table of Contents viii Figure 6
46. Replace the A10 Acquisition module Yes TLS 216 Service Manual Troubleshooting Power on again and observe the LED DS1 Does it only display 8 Power on again and observe the LED DS1 Does it display s there 5 1 V on Replace the J 27 pin 17 Aes Replace the A16 See Figure rocessor Display Low Voltage Power 6 37 module Supply module Perform the A16 Low Voltage A Power Supply Module Isolation troubleshooting 2 Replace the procedure on J 28 Pin 100 A11 DRAM See Figure Processor Display 6 37 module Power off the logic scope and remove its cabinet using the Rear Yes Cover and Cabinet re moval procedure On A eion the A11 DRAM module Processor Display module set 510015 eighth switch to the open position Press 1002 on the No Does 051 Does All DRAM 7 8 then DS1 flash 8 Processor Display a 0 display the sequence module towards the ex 1 of hex numbers back of the logic with no perio pausing to scope and cycle preceding 2 them flash c power Perform the Display troubleshooting procedure Does DS1 flash 8 Replace the then display the sequence All DRAM of hex numbers Processor Display pausing to module 2 flash a Replace the All DRAM Proce
47. STBY switch is one of the menu switches However it is not read by the Front Panel Processor but passes through the A12 Front Panel board and the DRAM Processor Display board to the low voltage power supply The front panel also generates the probe compensation signals SIGNAL and GND The GPIB connector provides access to stored waveforms and allows external control of the logic scope You can output hardcopies to the GPIB RS 232 and Centronics ports The low voltage power supply is a switching power converter with active power factor control It supplies power to all of the circuitry in the logic scope The principal POWER switch located on the rear panel controls all power to the logic scope including the Low Voltage Power Supply The ON STBY switch located on the front panel also controls all of the power to the logic scope except for part of the circuitry in the Low Voltage Power Supply The power supply sends a power fail PF warning to the processor system if the power is going down The fan provides forced air cooling for the logic scope It connects to 25 V from the Low Voltage Power Supply by way of the A11 DRAM Processor Dis play module Circuit Description 3 4 TLS 216 Service Manual Introduction Option 1S TLS 216 Service Manual The entire performance verification procedure includes both the Brief Procedures and the Performance Tests found later in this section You may not need to perform all
48. Scope 2 9 How to Set Functions from the Front Panel 2 9 How to Set Functions from Menus 2 10 How to Set Complex Functions 2 11 Operating Instructions for Waveform 2 15 Vertical Readout 100 eee Re eh ee 2 15 How to Adjust the Vertical 2 16 To Scale and Position Waveform Groups 2 17 To Set Up from the Vertical Controls Menu 2 17 How to Select Groups and Channels 2 18 Group 2 se eh be Peer EIS 2 18 To Select a Channel 222222222024 EU e 2 19 To Remove a Group from the Display 2 19 How to Create a Waveform 2 20 To Define a Group 2 21 To Delete 2 21 How to Choose the Group Display Mode 2 22 To Select a Group 2 23 To Display Only the Selected Channel 2 23 To Define Group Thresholds and Height 2 24 To Remove a Group from the Display
49. Serial Number Certificate Number Temperature RH 96 Date of Calibration Technician Performance Test Sequence Main Generator Readings Logic Triggering 2 27 MHz Sequence Delayed Generator Readings Threshold Readings Positive Slope Negative Slope 1 50 MHz Positive Slope Negative Slope 2 27 MHz Trigger Threshold Edge Trigger N A N A CH2 50 MHz Positive Slope Negative Slope CH3 50 MHz Positive Slope Negative Slope CH4 50 MHz Positive Slope Negative Slope CH5 50 MHz Positive Slope Negative Slope CH6 50 MHz Positive Slope Negative Slope CH7 50 MHz Positive Slope Negative Slope CH8 50 MHz Positive Slope Negative Slope CH9 50 MHz Positive Slope Negative Slope Stable Trigger Stable Trigger N A N A TLS 216 Service Manual 4 21 Performance Tests TLS 216 Test Record Cont Instrument Serial Number Certificate Number Temperature RH 90 Date of Calibration Technician Performance Test Minimum Incoming Outgoing Maximum Edge Trigger CH10 50 MHz Positive Slope Negative Slope CH11 50 MHz Positive Slope Negative Slope CH12 50 MHz Positive Slope Negative Slope CH13 50 MHz Positive Slope Negative Slope CH14 50 MHz Positive Slope Negative Slope CH15 50 MHz Positive Slope Negative
50. Service xviii Repair or Calibration Service Tektronix provides service to cover repair under warranty as well as other services that may provide a cost effective answer to your service needs Whether providing warranty repair service or any of the other services listed below Tektronix service technicians trained on Tektronix products are best equipped to service your logic scope Tektronix technicians are appraised of the latest information on improvements to the product as well as the latest new options to the product Tektronix warrants this product for three years from date of purchase excluding probes for which the warranty is one year The warranties appear following the title page and copyright page near the front of this manual Tektronix techni cians provide warranty service at most Tektronix service locations worldwide Your Tektronix product catalog lists all service locations worldwide The following services may be purchased to tailor repair and or calibration of your TLS 216 Logic Scope to fit your requirements Option 9C When you order your TLS 216 Logic Scope with Option 9C it is shipped with a Certificate of Calibration and Test Data Report This certificate provides traceability to the National Institute of Standards and Technology NIST It certifies procedures used to calibrate the logic scope comply with U S Military Standard 45662A At Depot Service Tektronix offers several standard priced adjustment c
51. TLS 216 User Manual NOTE Unlike a conventional digitizing oscilloscope the logic scope displays the waveform it acquires as groups instead of as individual waveforms For instructions on using groups see Operating Instructions for Waveform Groups on page 2 15 See Figure 2 1 to become familiar with the basic layout of the logic scope display and the components within that display Read the following procedures to learn how to power on the logic scope and how to use its front panel controls and menus to set logic scope functions Push the principal power switch found on the rear panel of the logic scope to the on 1 position then push the ON STBY standby switch to toggle the Logic Scope into operation General Operating Instructions A How to Use Help Brief status information Graticule and waveform groups Group reference indicator Vertical group horizontal scale and trigger type readouts Pop up menu CAUTION The principal power switch at the rear panel is the true power disconnect switch When connected to a power source and when the principal power switch is on the internal power supplies and much of the other circuitry of the logic scope are energized REGARDLESS of the setting of the ON STBY switch The ON STBY standby switch simply toggles operation on and off To enter help mode push the HELP front panel button Front panel knobs and buttons now display information about their funct
52. To vertically position the selected group turn the Vertical POSITION knob This knob controls only the selected group and operates independently of the display mode NOTE The instructions in the remainder of this section make use of the convention for procedure steps described in the preface to this manual see Conventions on page xiv To Set Up from the access the Vertical Controls menu press GROUP MENU gt Vertical Vertical Controls Menu Controls main See Figure 2 3 5 Tek Run 100 5 5 Sample Offset 0 V Vertical Group Reference Indicator pem venia M ofthe Selected Group CEE SPI STU AN Set Offset toov Bandwidth Full n Group Reference Indicator of an Unselected Group JA ga oar Position Vertical Readout Group 1 Selected S Set Position o 0 Di XA 50045 Edge xX 14 ivs 5 Vertical 5 1 5 0 Oloo Display Timing Figure 2 3 The Vertical Readout and Vertical Controls Menu TLS 216 Service Manual 2 17 Operating Instructions for Waveform Groups Use this menu to set vertical offset and bandwidth full or limited of the selected group You can also change the vertical position to a specific num
53. Trigger Minimum Pattern Width TLS 216 Service Manual Width or Limit Setting 2 4 ns to 35 ns Trigger Time Accuracy 5 of setting 2 5 ns 10 of setting 2 5 ns 01 of setting 50 ns 35 ns to 1 us 1 02 us 015 500 ps 800 ps 2 5 ns 2 0 ns 4 0 ns Warranted Characteristics Table 1 4 Warranted Characteristics Triggering System Cont Name Pattern Type Trigger Rearm Time Sequence Type Trigger Rearm Time Sequence Type Trigger Minimum Pulse Width State Type Trigger Setup and Hold Times Trigger Threshold Accuracy Description 4 5 ns 4 5 ns 4 0 ns Setup 4 0 ns hold time 4 0 ns 2 of threshold setting offset setting 0 2 Divs offset accuracy Auxiliary Trigger Input Sensitivity DC to 50 MHz input frequency with 2 0 V and ViN LO z 0 8 V Table 1 5 Warranted Characteristics Output Ports and Power Distribution System Name Description Main and Delayed Trigger Output Logic Levels Logic High Vouti 2 5 V open circuit 2 1 0 V into a 50 Q Source Voltage Source Frequency Power Consumption Probe Compensator Output Voltage and Frequency Table 1 6 Warranted Characteristics Environmental Name Temperature Operating and Nonoperating Electrostatic Discharge Susceptibility load to ground Logic Low Voyt Lo x 0 7 V into a load of x 4 mA x 0 25 V into a 50 O load to ground 90 to 250 VACpws continuous range 47 Hz to
54. Yes Processor Acq tests pass now Replace the All DRAM Processor Display module Figure 6 33 Processor Acquisition Troubleshooting Procedure 6 68 TLS 216 Service Manual Troubleshooting This procedure helps you determine if the A11 DRAM Processor Display or the A12 Front Panel module is bad s the cable from the A11 DRAM Processor Display module to the A12 Front Panel module securely connected Connect the cable and then perform the P rimary trouble shooting procedure On the A11 DRAM the resistance Processor Display between these two Is the Power off and remove the ON STBY module probe 26 sine diamatically de cable from J 2 on the A11 uton vong P oni ORAM correctly ohm meter see Fig STBY button p ure 6 37 is toggled and 8 with an ohm meter Power off the logic scope remove Yes the cable from J 2 ofthe A11 DRAM Processor Display module see Replace the Low Voltage Figure 6 37 and power back on Power Supply the resistance between these two pins dramatically decrease when the ON STBY Replace the 12 Front Panel module rea Hz clock pin 25 Yes Probe 26 and 27 butDO NOT RE pin 2 6 7 11 16 MOVE the cables from the connector m Are these pins 15 V see Figure 6 37 The voltages will 15 V 15 V 5 1 VW YeS 15 V 45 V 5 1 V
55. adapters and two SMA to BNC adapters See Figure 4 11 2 Confirm all channels are within limits for channel delay a Set the generator frequency to 250 MHz and the amplitude for about two divisions in channel 1 Locate the point on the rising edge of the left most waveform where it crosses the center horizontal graticule line This is the time reference point for this waveform Note the corresponding time reference point for the right most waveform See Figure 4 12 Press CURSOR Function main gt V Bars side Press CLEAR MENU TLS 216 Service Manual Performance Tests First display the live reference waveforms for channels Note their overlapping ground reference indicators Second identify the time reference points of those waveforms Third turn on the cursor and align the V bar cursors to the time reference points Fourth read the results here TLS 216 Service Manual Medium Frequency Sine Wave Generator Output o C2 63 63 C6 c O gt e oS 50 Terminator 0000 Figure 4 11 Test Hookup for Channel Delay Test Dual Input Coupler a Ey Coaxial Adapters SMA to BNC Adapters 1 00 V 2 21 1 70 V M 00 Edge 27 Jul 1993 12 15 45 Co 222 C
56. assembly Be sure to connect each numbered channel to the jack labeled with the same number see Figure 6 11 TLS 216 Service Manual Removal and Installation Procedures Probe Flex Circuit Replacement TLS 216 Service Manual Then see the following procedures in the order listed to complete reassembly of the logic scope m Front Cover Trim Ring Menu Buttons and Input Panel page 6 16 W Rear Cover and Cabinet page 6 19 2 N D CIN s Cutand Remove gt Input Cable Assembly Figure 6 12 Cable Tie Removal for New Installations STOP Do not perform the following procedure unless you are replacing a failed or damaged probe flex circuit with a fresh unit from the factory Removal of the circuit is likely to destroy it If such is not the case skip this procedure 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 b Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 2 Orient the logic scope Set the logic scope so its top is down on the work surface and its front is facing you 3 Partially remove the Input Cable Assembly a Working from the front remove the five screws mounting the input cable assembly to the front subpanel The heads of these screws were exposed 6 31 Removal and Installation Procedures 6 32 when you remov
57. be removed in the locator diagram External Modules Figure 6 1 page 6 12 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its front is facing you Remove the display frame assembly a Do the procedure Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 to remove the front cover and trim ring b Liftthe front panel assembly out of the front subpanel until you can reach J2 on the front panel assembly Disconnect the flex cable coming from the display frame assembly at J39 of the front panel assembly c Remove the three screws securing the display frame assembly to the front subpanel and remove that assembly Reinstallation a Do in reverse order substeps 3b 3c reversing each step to reinstall the display frame assembly Then see the procedure Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 to complete reassembly of the logic scope Assemble equipment and locate modules to be removed Have handy a pair of needle nose pliers Item 6 Locate the modules to be removed in the locator diagram External Modules see Figure 6 1 Orient the logic scope Set the logic scope so the left side is down on the work surface and its handle is facing upwards Remove the handle a Insert the tips of a pair on needle nose pliers Item 6 into the hole of either handle cap Push and hold to depress the handle release see Figure 6 10 b While holding the hand
58. care Press Set Level to 50 Sequence logic trigger mode performance verification test Set trigger type to Sequence Range and define Start Pattern as Ch 1 Hi and End Pattern as Ch 1 Lo the rest X Set upper range limit to 600 iS ec and lower limit to 2 uSec Press Set level to 50 Does Channel display a triggered waveform for all three trigger No showing check input connections faults correct as needed Check probe for proper operation and make sure probe power flex board is connected to acquisition board Figure 6 36 Acquisition Troubleshooting Procedure Cont TLS 216 Service Manual Y Check that all connections to acquisition board are made properly Are all Perform the low voltage 16 channels still power supply 8 showing faults troubleshooting procedure Are all Yes 16 channels still Replace the Perform Signal Path p A10 Acquisition Module Compensation Perform the complete adjustment procedure found in Section 5 and recheck Acquisition Module using this procedure If Low voltage or acquisition module was replaced Perform Signal Path Compensation and the complete adjustment procedure found in Section 5 6 71 Troubleshooting Only probe points specified in the procedures You can cause catastrophic damage if you attempt to probe other points Pin 100 06000000000000000000000000 00000000000000
59. center It is not updated to match current modules of the same type Again each module comes with a 90 day service warranty For More Information Contact your local Tektronix service center or sales engineer for more information on any of the repair or adjustment services just described xix Introduction XX TLS 216 Service Manual Product Description Tektronix TLS 216 Logic Scope f The Tektronix TLS 216 Logic Scope is a superb tool for analyzing and debug ging digital circuits Its performance addresses the needs of digital designers and troubleshooters of such circuits with the following features W sixteen channels equipped with sixteen 2 5 pF FET probes for acquiring waveforms from digital circuits m three display modes displays analog waveforms digital BusForms and dual threshold timing diagrams m four threshold level presets based on four logic families TTL CMOS ECL and ECL for deriving digital levels for BusForm and timing diagram displays m five trigger types Edge Pulse Pattern State and Sequence m 500 MHz maximum bandwidth 2 Gigasamples second maximum digitizing rate eight bit digitizers and up to a 2 000 sample record length per channel m full GPIB software programmability and hardcopy output using GPIB RS 232 or Centronics po
60. fluctuate around 1 2 V Disconnect the high frequency sine wave generator from the SMA to BNC adapter and reconnect it through a 2X attenuator Press TRIGGER MENU Slope main Check that the instrument obtains a stable trigger for the test waveform on both the positive and negative slopes Use the side menu to switch between trigger slopes use the THRESHOLD knob to stabilize the trigger if required Disconnect the test hookup and move it to the next channel in numeric sequence Press GROUP MENU Group Definition main First Channel side Press the side menu button First Channel again if necessary to increment to the next channel to be tested Press TRIGGER MENU Source main gt Channel side Use the numeric keypad to enter the next channel in sequence Press MEASURE Select Measrmnt for Ch x Press the side menu button until Amplitude appears in the side menu its icon is shown at the left Press the side menu button Amplitude Repeat substeps g through m for all sixteen channels Substeps i through m will be unnecessary for channel 16 5 Disconnect the test hookup at the channel 16 input 4 50 TLS 216 Service Manual Performance Tests Output Signal Checks These procedures check those characteristics of the output signals that are listed as checked under Warranted Characteristics in the Specifications section Check Outputs Probe Equipment Required One P6240 probe
61. in the selected group For example Autoset which automatical ly adjusts control settings based on the signals at its input channels uses the selected channel to determine the logic scope control setup Also Measure the automatic measure feature takes most automatic measurements on the selected channel To designate one channel as the selected channel within the selected group perform the following steps 1 Select a live or reference group as previously described 2 Press Group Definition main Selected Channel side Use the general purpose knob or key pad to designate the selected channel in the group To remove a group from display do the following steps 1 Press the group selection button GROUP 1 through GROUP 8 to select the group you want to remove from the display 2 Press the GROUP OFF button to remove the currently selected group To display a group that is turned off turn it on in the group mode menu Press GROUP MENU Group Definition main gt Analog Bus or Timing Diagram side NOTE Turning a group off does not make its channels available for including in other groups Turning off a group that includes a channel providing a trigger source does not turn that channel off as a trigger source Turning off a group does remove any automated measurements of channels in that group 2 19 Operating Instructions for Waveform Groups How to Create a Waveform Group 2 20 The logic scope oper
62. label tells you the current setting for that function Type is currently set to Edge Select a function from the main menu using the main menu buttons 12 A side menu for selecting among that the available settings for that function appears Example Push Source 13 Select the setting for the function from the side menu 9 using the side menu buttons 11 Example Push AC 10 TLS 216 Service Manual General Operating Instructions Tek Run 10 0 5 5 Sample Edge ource AC AC Line Auxiliary Rear Panel Ga 1 1 100mv 7 M5 00ms Edge oloo Threshold 7 500 V How to Set Complex Functions TLS 216 Service Manual A few functions require more than just two levels main and side of menus to completely specify their settings In such cases either the main menu pops up a menu to supply additional choices or the side menu displays a field that can be varied to set parameters To set a function that uses a pop up menu do the following steps 1 Push a main menu button to pop up a menu 18 of subfunctions Note the upward pointing arrow or triangle in the main menu button This triangle indicates that a pop up menu appears when the main button is pushed Example Push Type 17 Note the pop up menu for Type is set to Edge All the main menu buttons to the right of the pop up
63. ns 0 5 ns 21 ns to 50 ns lns 52 ns to 100 ns 2 ns 104 ns to 200 ns 4 ns 210 ns to 500 ns 10 ns 520 ns 015 20 ns 0 5 ns to 10 s 50 Hz 16 5 ns to 250 ns at 10 us or faster 15 152 ns to 250 s at 25 us or slower 2 to 10 million events ViN HI 2 0 V and ViN LO 0 8 V Inputis TTL compatible 1 The Waveform Interval WI is the time between the samples in the waveform record Table 1 10 Typical Characteristics Display and Data Handling Systems Name Video Display Resolution Nonvolatile Memory Capacity Nonvolatile Memory Retention Time Floppy Disk Drive 1 10 Description 640 pixels horizontally by 480 pixels vertically in a display area of 12 8 cm 5 04 in horizontally by 9 6 cm 3 78 in vertically Reference waveforms 4 stored setups 10 and calibration constants are retained in nonvolatile memory gt 5 years 3 5 floppy disk 1 44 Mbyte DOS 4 0 formatfor storing waveforms hard copies and instrument setups TLS 216 Service Manual Typical Characteristics Table 1 11 Typical Characteristics Operating Environment Name Humidity Operating and Nonoperating Description Nonoperating to 90 relative humidity from 22 C to 40 C to 50 relative humidity from 22 C to 50 C Operating to 80 relative humidity from 4 C to 429 C to 20 relative humidity from 4 C to 450 C Altitude Operating and Nonoperating Operating to 4570 m 15 000 ft Nonop
64. of Main Trigger Output Limits d Check that the High readout is 1 0 V and that the Low readout is 0 25 V e Move the precision 50 cable from the MAIN TRIGGER OUTPUT BNC to the DELAYED TRIGGER OUTPUT BNC f Check that the High readout is gt 1 0 volt and that the C1 Low readout x 0 25 volts 3 Disconnect the cables from the channel 1 input and the rear panel output 4 54 TLS 216 Service Manual Em _ _ Adjustment Procedures This section contains information needed to adjust your TLS 216 Logic Scope Description The Adjustment Procedures are divided into six subsections General information about adjusting the TLS 216 Logic Scope m A list of equipment required to perform the adjustments m The written procedures for installing and using the TLS 216 Adjustment Software m The TLS 216 Adjustment Software included with this manual The material found in the subsections listed above should be read before using the adjustment software W A written procedure for manually adjusting the display assembly Purpose This procedure is used to return the logic scope to conformance with its Warranted Characteristics as listed in Section 1 Specification It can also be used to optimize the performance of the logic scope Adjustment Interval As a general rule these adjustments should be done every 2000 hours of operation or once a year if the logic scope is used in
65. of these procedures depending on what you want to accomplish m To rapidly confirm that the logic scope functions and was adjusted properly just do the procedures under Self Tests which begin on page 4 5 Advantages These procedures are short require no external signal sources and perform extensive functional and accuracy testing to provide high confidence that the logic scope will perform properly You can use them as a quick check before making a series of important measurements Time Required Approximately 55 minutes To further check functionality first do the Self Tests just mentioned then do the procedures under Functional Tests that begin on page 4 7 Advantages These procedures require minimal additional time to perform require no additional equipment other than the standard accessory probes and a floppy disk and more completely test the internal hardware of the logic scope You can use them to quickly verify that the primary features of the logic scope are operational Time Required Approximately 45 minutes If you desire a more extensive confirmation of performance do the Performance Tests beginning on page 4 15 after doing the Functional and Self Tests just referenced Advantages These procedures add direct and indirect checking of warranted specifications They require more time to perform and suitable test equip ment See Equipment Required beginning on page 4 15 Time Required Approximately 11 h
66. or more individual calibration tests CATS and an internal compensation routine SPC The TLS 216 Adjustment Software provides you with instructions for running each of the tests these software based adjustments are made internally by the adjustment software and all adjustments can be done without removal of the logic scope cabinet Signal Path Compensation SPC This internal routine is not an adjustment It is a temperature compensation routine that compensates for the current operating temperature to optimize logic scope performance Table 5 1 Calibration Tests Class of Adjustment CATS Tests Voltage Reference CVR CAL SPC Frequency Response SPC HF CAL Pulse Trigger SPC TRIG_POS CAL The adjustment software will allow you to make individual adjustments However usually all adjustments are made unless you are adjusting circuits in the course of troubleshooting the logic scope Read the information under Complete Adjustment Adjustment After Repair and Adjustment Dependencies before doing an individual adjustment After the removal and replacement of a module due to electrical failure you must either do a complete adjustment or no adjustment is required depending on the module replaced See Table 5 2 Adjustment Procedures Adjustment Dependencies Equipment Required Table 5 2 Adjustments Required for Module Replaced Module Replaced Adjustment Required Acquisition Board Complete Adjustment Front P
67. provides this introduction plus general information on preventing damage to internal modules when doing maintenance Inspection and Cleaning provides information and procedures for inspecting the logic scope and cleaning its external and internal modules Removal and Installation Procedures provide instructions for the removal of defective modules and replacement of new or repaired modules Also included is a procedure for disassembly of the logic scope for cleaning Troubleshooting provides information for isolating failed modules Included are instructions for operating the internal diagnostic routines of the logic scope and troubleshooting trees Most of the trees make use of these internal diagnostic routines to speed fault isolation to a module Procedures Not In This Section TLS 216 Service Manual The following sections contain information procedures related to maintenance Operating Information beginning on page 2 1 covers instructions useful when operating the logic scope in order to troubleshoot it It also details the service strategy and lists options for obtaining maintenance service and for replacing failed modules Theory of Operation beginning on page 3 1 contains a circuit description at the module or block level Performance Verification beginning on page 4 1 contains procedures that may be useful in isolating problems to modules by testing logic scope performance Adjustment Procedures beginning on page 5
68. reflects the name and value of the function that the general purpose knob is currently controlling Wm Whenever the general purpose knob assignment is changed a knob icon appears immediately to the right of the general purpose knob readout to notify you of the assignment change The icon is removed as soon as you use the general purpose knob to change the value of the function it is assigned to m Whenever the menu is removed the general purpose knob is not assigned and doesn t control any function An exception is the cursor function If cursors are turned on removing the menu leaves the knob assigned to 2 13 General Operating Instructions 2 14 control the cursors until reassigned by selecting another menu and function that uses the knob When the SHIFT button is lit the general purpose knob becomes a coarse adjustment When the SHIFT button is not lit the general purpose knob becomes a fine adjustment The general purpose knob also has a SELECT button This button is used to toggle the knob between the control of either of the two cursors displayed when H bar or V bar cursors are turned on in the cursor menu Display and Utility Menus Using the techniques described for using menus you can access and change functions in the display menu and utilities menu In the Display menu you can set the following functions Color waveforms readouts graticule Intensity waveforms readouts graticule etc Style of wave
69. side menu button more until Amplitude appears in the side menu its icon is shown at the left Press the side menu button Amplitude Set the generator frequency to 25 MHz adjust the generator output until the C1 Amplitude readout indicates the amplitude is 4 V Readout may fluctuate around 4 V Press TRIGGER MENU Source main gt Auxiliary side Press SET LEVEL TO 50 Check that the instrument obtains a stable trigger for the test waveform on both the positive and negative slopes Press the main menu button Slope then use the side menu to switch between trigger slopes Use the general purpose knob to stabilize the trigger if required 4 49 Performance Tests Leave the Main trigger system triggered on the positive slope of the waveform Press the main menu button Source then press the side menu button CH 1 4 Confirm that the Main trigger system is within sensitivity limits 500 MHz a Disconnect the hookup Connect through its leveling head a coaxial adapter and an SMA to BNC adapter the signal output of a high fre quency leveled sine wave generator to channel 1 Set the horizontal SCALE to 500 ps for the M Main time base Set the vertical SCALE to 200 mV Set the generator frequency to 500 MHz press SET LEVEL TO 50 Set the test signal amplitude for about six divisions on screen Now fine adjust the generator output until the C1 Amplitude readout indicates the amplitude is 1 2 V Readout may
70. the Rear Cover and Cabinet remova the ON STBY procedure Check all the cables coming button Can you out of the Low Voltage Power Supply hear the fan and the cabling between modules Be now sure every cable is attached securely Can you hear the fan whirling No Yes When the logic scope powers on do the front panel lights come on and then go off about 30 seconds later Yes N Perform the 0 Processor F ront Panel trou bleshooting procedure Does Perform the A16 Low Voltage Power Supply Module Isolation troubleshooting procedure There is something wrong with the ON STBY Does the button Perform the system power Processor F ront Panel on now troubleshooting procedure the display seem Nos to be working at all Yes Is the No display readable gt gt and stable Yes Does the logic scope respond correctly when the front panel buttons are pushed Perform the Processor Front trou bleshooting procedure Yes the logic scope power on all the diagnostics pass but sometime later powers down on its own No Perform the Module Isolation troubleshooting procedure Figure 6 26 Primary Troubleshooting Procedure 6 60 Yes Perform the A16 Low Voltage Power Supply Module Isolation troubleshooting procedure Did you find the faulty module No
71. the probes and the products listed above on the page or pages immediately following the title and copyright pages in the manual for each product TLS 216 Service Manual gt 7 Electrical Parts List TLS 216 Service Manual The modules that make up this instrument are often a combination of mechanical and electrical subparts Therefore all replaceable modules are listed in under Replaceable Parts List which begins on page 10 1 Refer to that list for locating all replaceable parts and their part numbers when using this manual 8 1 Electrical Parts List 8 2 TLS 216 Service Manual 20 Diagrams This section contains the interconnection diagram and the block diagram for the TLS 216 Logic Scope Symbols Graphic symbols and class designation letters are based on ANSI Standard Y32 2 1975 Abbreviations are based on ANSI 1 1 1972 Logic symbology is based on ANSI IEEE Std 91 1984 in terms of positive logic Logic symbols depict the logic function performed and can differ from the manufacturer s data The tilde preceding a signal name indicates that the signal performs its intended function when in the low state Other standards used in the preparation of diagrams by Tektronix Inc are m Tektronix Standard 062 2476 Symbols and Practices for Schematic Drafting m ANSI Y14 159 1971 Interconnection Diagrams m ANSI Y32 16 1975 Reference Designations for Electronic Equi
72. to Figure 4 1 Main menu refers to the menu that labels the seven menu buttons under the display side menu refers to the menu that labels the five menu buttons to the right of the display menu refers to a menu that pops up when a main menu button is pressed TLS 216 Service Manual Introduction Instructions for making a menu selection will follow this format FRONT PANEL BUTTON gt Pop Up if necessary gt Main Menu Button gt Side Menu Button For example Press TRIGGER MENU gt Type Edge pop up gt Source main gt AC side Side menu area Readouts for Position of Waveform measurements move Record Relative to General Purpose here when CLEAR Brief Status the Screen and Display Knob Readout MENU is pressed Information An Tek Run 100 5 5 Channel Index 1 Graticule and Waveforms soured Waveform Reference Channel Symbols Ground Levels act and Waveform Sources AC Line Auxiliary Rear Panel Vertical Scale Horizontal Scale and Trigger Level Readouts M 500 5 Edge oeubbooo shold Pop up Menu Source Slope Thre TS chi 280 mv Holdoft Main menu display area Readouts in lower graticule area move here when CLEAR MENU is pressed Figure 4 1 Map of Display Functions TL
73. 00000000000 0000000000000000000000000 n ggr p 9 TT fed E 0000000000000 0000000000000 ru l ooo gpl oo ooo dB doas 100 5005009099650 3E 00000000000 0000000000006 L t 3 annann p 1 3 C nb nnpnnann 0000000000 x oooooooooo 5 r o 000000000000 D 0000000000000000 1 18553 D E E 59 gt poeSuteasaesoaGa TER I D pam DODDEGE CDL TE Pin3 0000000000 0000000000 E 000000000 0100000000
74. 1 Access Procedure eere ERE e WERE eS 6 14 Procedures for External 6 15 Eront Pan l Knobs 4 oec ie OO E VERRE ORS 6 16 Line Fuse and Line 6 17 EMI Gaskets 2 55 Cee ec V Eur ERECTAE 6 19 Rear Cover and Cabinet 6 19 Front Cover Trim Ring Menu Buttons and Input Panel 6 21 A12 Front Panel Assembly and Probe Calibrator 6 23 Display Frame Assembly 6 26 Cabinet Modul s sce eos a e EV BRE E ERREUR AR 6 26 Procedures for Outer Chassis Modules 6 29 Input Cable 6 29 Probe Flex Circuit Replacement 6 31 Panes fsa Saati ea ee ee eek ek E 6 33 A14 D1 Bus and Analog Power and Digital Power Cables 6 33 A23 6 35 Processor Display Board 6 37 Top Cover and Board Brackets 6 39 Rear Panel Cables 2 2 6 40 10 Acquisition Board 6 41 Floppy Disk DEEP bert uS 6 42 RearCh ssis ibi er e hr ere ed rre eer 6 45 Procedures for Inner Chassis Modules
75. 10 TLS 216 Service Manual Adjustment Procedures 4 Adjust the display contrast a Display the White Field test pattern W Press the center main menu button to display the main menu m Press the main menu button Tests m Repeatedly press the side menu button more until White Field appears in the side menu Push White Field W Press the main menu button EXECUTE then press the side menu button Ok Confirm Run Test b Make the contrast adjustment m Locate R404 It is one of the adjustments on the left side of the instrument located just ahead of the fan It is the fifth adjustment from the fan m Monitor the luminance at center screen using a J16 photometer and a luminance probe m Adjust R404 CONTRAST for a reading of 40 foot lamberts NOTE The adjustments for contrast and brightness interact with each other 5 Restore the logic scope to normal operation a Restore the dip switch to the settings that follow Switch No Closed b Power off the logic scope See Removal and Installation Procedures in Section 6 to reinstall the cabinet and other modules removed in step 1 TLS 216 Service Manual 5 11 Adjustment Procedures 5 12 TLS 216 Service Manual C Maintenance Information This section contains the information needed to do periodic and corrective maintenance on the TLS 216 Logic Scope The following topics are included Maintenance Information
76. 2 precision coaxial cable to one side of a BNC T connector See Figure 4 6 Connect the Sense output of the generator through a second dual banana connector followed by a 50 2 precision coaxial cable to the other side of the BNC T connector Now connect the BNC T connector to channel 1 through the SMA to BNC adapter and a coaxial adapter See Figure 4 6 SMA to BNC Adapter BNC T Connector Figure 4 6 Test Hookup for DC Gain and Accuracy Tests g h Press save recall SETUP gt Recall Factory Setup main gt Confirm Factory Init side Set the vertical SCALE to 100 mV Press SHIFT then press ACQUIRE MENU gt Mode main gt Average 16 side Press DISPLAY gt Graticule main gt Frame side Press CURSOR Function main gt H Bars side 2 Confirm input channels are within limits for DC gain accuracy Do the following substeps test channel 1 first then proceed on to the other channels a Press GROUP MENU Vertical Controls main gt Offset side Use the keypad to set offset to 250 mV Press 250 then press SHIFT m and then press ENTER Set the generator output to Press CLEAR MENU Use the general purpose knob to precisely align the active cursor to the DC baseline level on screen 4 27 Performance Tests d Setthe generator output to 500 mV e Press SELECT Use the general purpose knob to precisely ali
77. 2MB 0 5 INH DSDD 50356 119 5677 01 9 105 1081 xx 1 FLOPPY DISK DRIVE BRACKET ADAPTER TK1163 105 1081 xx 211 0866 xx 1 SCREW PHIL M2 5X10 PHIL PNH BRZN 0 01 211 0866 xx Figure 10 4 Floppy Disk TLS 216 Service Manual 10 9 Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Description Code Mfr Part No 10 5 1 174 1525 00 1 ASSY SP ELEC 2 X 8 13 28 AWG VIDEO MONITOR BUS 2469 ORDER BY DESC 2 174 2031 00 3 CABLE ASSY RF 50 OHM COAX 6 5 LW BLUE J KT TK2338 174 2031 00 3 174 2349 00 1 CABLE ASSY 7 0L 2 2 COND RIBBON LDI 1X2 0 1 CTR TK2469 ORDER BY DESC 4 174 1524 01 1 CA ASSY SP RIBBON GPIB IDC 24 28 AWG 4 0 L 24 POS TK2469 ORDER BY DESC 5 129 1439 00 2 SPACER POST 0 17 L 4 40 BRS 0 25 RND TK0588 ORDER BY DESC 6 174 2975 00 1 CA ASSY SP ELEC 16 28 AWG FLAT 4 0L 15 POS 80009 174297500 7 346 0266 00 1 STRAP CABLE PLASTIC 0 05 346 0266 00 8 174 1519 00 1 CA ASSY SP RIBBON IDC 40 28 AWG 5 4 L 2X20 0 1 CTR TK1899 ORDER BY DESC 9 174 2973 00 1 CA ASSY SP RIBBON IDC 40 28 AWG 1 4 L 2X25 0 1 53387 ORDER BY DESC 10 174 1728 00 1 CA ASSY SP RIBBON IDC 26 28 AWG 6 0 L 2X13 0 1 CTR 53387 ORDER BY DESC 11 343 0549 00 3 STRAP TIEDOWN E 0 098 W X 4 0 L ZYTEL TK1499 HW 047 10 10 TLS 216 Service Manual Replaceable Parts List Figure 10 5 Cabling 10 11
78. 3 1457 01 003 1487 00 1 FIXTURE CRT ALIGNMENT 80009 003148700 012 0991 00 1 CABLE INTCON SHLD CMPST GPIB CRC 12 TW PR 24 22526 81190 020 012 0991 01 1 CABLE GPIB LOW EMI 1 METER 00779 553577 2 012 1250 00 1 CABLE INTCON SHLD CMPST PARALLEL CENTRONICS TK2193 CACC 3049 012 1298 00 1 CABLE INTCON RS232C DB25M DB9F SERIAL NULL TK2500 294 9 012 1388 00 1 CABLE ASSEMBLY OSCILLOSCOPE SECURITY 6 FT 80009 012138800 013 0282 00 1 ADAPTER PROBE 50 TO 75 OHM ADAPTER 80009 013028200 016 0909 01 1 CASE CARRYING SOFTSIDED FOR 3002C P R 25PIN TK2162 0587 016 1135 00 1 CASE CARRYING 26 X 22 X 15 HARD TRANS W WHEELS 34416 2622RW 7T 7B 016 1145 00 1 HOOD ASSEMBLY 80009 016114500 016 1236 00 1 MOUNTING KIT RACK MOUNT KIT 80009 016123600 063 1645 00 1 SOFTWARE PKG FIELD ADJ 1 3 5 AND 1 5 25 DISK 80009 063164500 070 8831 1 MANUAL TECH SERVICE 80009 0708831xx 103 0340 00 1 ADAPTER FLEX FLEX CKT 25 CONTACT 0 025 PITCH 80009 103034000 067 0232 00 1 FIXTURE CAL ADAPTER ZERO 1055 6240 80009 067023200 TLS 216 Service Manual 10 13 Replaceable Parts List 10 14 TLS 216 Service Manual
79. 440 Hz lt 350 W Output voltage 0 5 V base to top 2 into a gt 50 load frequency 1 kHz 5 Description Operating 4 C to 450 C Nonoperating 22 C to 460 C Up to 8 kV with no change to control settings or impairment of normal operation up to 15 kV with no damage that prevents recovery of normal operation by the user 1 6 TLS 216 Service Manual Warranted Characteristics Table 1 6 Warranted Characteristics Environmental Cont Name Description Emissions The instrument meets or exceeds the EMC requirements of the following standards Vfg 243 1991 Amended per Vfg 46 1992 FCC Code of Federal Regulations 47 CFR Part 15 SubpartB Class A Third Party Certification UL 1244 Ninth Edition CSA C222 No 231 89 TLS 216 Service Manual Warranted Characteristics 1 8 TLS 216 Service Manual Typical Characteristics This subsection contains tables that list the various typical characteristics that describe the TLS 216 Logic Scope Typical characteristics describe typical or average performance Typical characteristics are not warranted Table 1 7 Typical Characteristics Input System Name Description Input Resistance Instrument Front P anel 75 1 atDC Probe Input Capacitance 2 5 pF maximum Table 1 8 Typical Characteristics Signal Acquisition System Name Description Effective Bits For a 9 division peak to peak sine wave output Output F
80. 443 00 1 CABINET SCOPE ALUMINUM 0 9 9 407 0443 00 10 348 1110 02 4 FOOT CABINET 80009 348111002 11 348 1254 01 4 PAD FOOT TEK BLACK SANTOPRENE 80009 348125401 12 348 0875 00 1 FLIPSTAND CAB TK0488 ORDER BY DESC 13 348 1109 01 2 GASKET SHIELD 45 0L 80009 348110901 14 200 3696 01 1 COVER FRONT PLASTIC 80009 200369601 STANDARD ACCESSORY 15 101 0142 00 1 TRIM DECORATIVE FRONT TK1163 ORDER BY DESC 16 334 8580 00 1 MARKER IDENT MKD TLS216 0KB05 334 8580 00 17 214 4287 00 1 ACTUATOR ELASTOMER MAT FRONT PANEL RUBBER TKOIK ORDER BY DESC 18 650 2927 00 1 REPLACEABLE AS DISPLAY FRAME WITH FLEX 80009 650292700 19 334 8560 00 1 MARKER IDENT MARKED FLEX 07416 334 8560 00 20 386 6405 00 1 PANEL INPUT POLYCARBONATE TK1163 386 6405 00 21 377 0579 00 5 INSERT KNOB PLASTIC TK1163 ORDER BY DESC 22 210 0457 00 2 NUT PL ASSEM WA 6 32 X 0 312 STL CD PL 0 01 ORDER BY DESC 23 614 0901 00 1 FRONT PNL ASSY 80009 614090100 12 24 366 2170 00 1 KNOB DIMP LED GPK 1 7 DIA TK1163 ORDER BY DESC 25 366 2111 00 3 KNOB SMALL FLUTED TK1163 ORDER BY DESC 26 200 4128 00 1 CALIBRATOR TK1163 ORDER BY DESC 27 366 2114 00 2 KNOB LARGE DETENTED TK1163 ORDER BY DESC 10 4 TLS 216 Service Manual Replaceable Parts List Figure 10 1 Cabinet and Front Panel 10 5 TLS 216 Service Manual Replaceable Parts List Fig amp Tektronix Serial No Mfr Index No Part No Effective Dscont Qty 12345 Name amp Descriptio
81. 490 mV 510 mV Frequency 950 Hz 1050 Hz Main Trigger Output High 21 0 V Low 0 25 V Delayed Trigger Output High 21 0 V Low 0 25 V TLS 216 Service Manual Performance Tests Preparation Clear Probe Calibrations Before performing any of the performance checks that follow you must initialize all channels to remove any previously stored probe calibrations To do so perform the following procedure Equipment Required None Time Required Approximately 5 minutes Procedure 1 Create 16 channel group a Disconnect any input signals and probes from the front panel b Press save recall SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side c Press GROUP MENU Group Definition main gt Last Channel side Use the numeric keypad to set the last channel to 16 2 Run the probe initialization routine on all probes Press the main menu button Cal Probes then press the side menu button OK Initialize Probes NOTE Ignore the message that appears on screen that instructs you to connect probes installation of probes is only required when compensation of probes is to be performed 3 Return to regular service Press CLEAR MENU to exit the system menus 4 24 TLS 216 Service Manual Performance Tests Signal Acquisition System Checks These procedures check either directly or indirectly those characteristics that relate to the signal acquisition system and are listed as checked under W
82. 8 center horizontal graticule line Delayed 00ms Edge Triggerable 892111 1 1 500mV 250ns Runs see Delayed Qo 0 00000075 After Main Mi D Trig Menu rigger ecor Oriz time Position Length Scale Hone 20 1000 div Oloo aoao LILE Figure 4 14 Measurement of Accuracy Long Term and Delay Time Press the side menu button Main Only Set the horizontal SCALE to 2 5 ns Set the output of the generator for 20 ns markers Press SET LEVEL TO 50 Press MEASURE gt Select Measrmnt for Ch x Press the side menu button more until Period appears in the side menu Press Period Press CLEAR MENU Check that the readout for C1 Per is within 19 760 ns to 20 240 ns Move the test hookup to the first channel in the next bank 5 9 or 13 TLS 216 Service Manual Performance Tests Press GROUP MENU Group Definition main Press the side menu button First Channel four times The channel with the test hookup connected should become the first channel Press TRIGGER MENU Source main gt Channel side Use the numeric keypad to set the trigger source to the selected channel Set the generator output back to 10 ms markers Press HORIZONTAL MENU Repeat substeps a through q until you have checked channels 1 5 9 and 13 Substeps m through q will be unnecessary for channel 13 3 Disconnect the hookup Dis
83. Accuracy at Zero Setting 4 26 Figure 4 6 Test Hookup for DC Gain and Accuracy Tests 4 27 Figure 4 7 Measurement of DC Gain Accuracy 4 28 Figure 4 8 Measurement of DC 4 30 Figure 4 9 Test Hookup for Analog Bandwidth Test 4 32 Figure 4 10 Measurement of Analog Bandwidth 4 33 Figure 4 11 Test Hookup for Channel Delay Test 4 34 Figure 4 12 Measurement of Channel Delay 4 35 Figure 4 13 Test Hookup for Time Base System Check 4 37 Figure 4 14 Measurement of Accuracy Long Term and Delay Time eve pene er d eS RUE 4 38 Figure 4 15 Test Hookup for Logic Trigger Check 4 40 Figure 4 16 Test Hookup for Trigger Threshold Check 4 43 Figure 4 17 Measurement of Trigger Level Accuracy 4 45 Figure 4 18 Test Hookup for Main Edge Trigger Sensitivity CHECKS 22 v s Rr PEAS aes Whe RISORSE EP IE ES 4 46 Figure 4 19 Measurement of Trigger Sensitivity 4 48 Figure 4 20 Test Hookup for AUX TRIGGER Input Sensitivity Check 4i el ue IE ese Nave RE 4 49 Figure 4 21 Test Hookup for Probe Compensator Check 4 51 Figure 4 22 Measurement of Probe Compensator Limits 4 52 Figure 4 23 Test Hookup for Main Trigger Output Check 4 53 Figure 4 24 Measurement of Main Trigger Output Limits
84. Analog Power and Digital Power Cables page 6 33 m Display Frame Assembly page 6 48 m Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 m Rear Cover and Cabinet page 6 19 completes reassembly Assemble equipment and locate modules to be removed Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 Do the procedure A30 Display Assembly and Supply Fuse page 6 48 Do not remove the display driver board Locate the modules to be removed in the locator diagram Inner Chassis Modules Figure 6 2 page 6 13 Orient the logic scope Set the logic scope so its rear is down on the work surface and its bottom is facing you Partially remove the Input Cable Assembly a Working from the front remove the five screws mounting the input cable assembly to the front subpanel The heads of these screws were exposed when you removed the input panel which was removed during the access procedure Lift the Input Cable Assembly out of the front subpanel do not unplug the assembly from the A10 Acquisition Board and route it out of the way Reverse the procedure to reinstall Remove the front subpanel Remove the six screws securing the front subpanel to the main chassis See Figure 6 24 for screw locations Lift the front subpanel up away from the main chassis to complete the removal Reinstallation Do the following substeps to reinstall the front subpanel and reassemble the remainder of the
85. Average 16 side Press DISPLAY gt Graticule main gt Frame side 4 Confirm input channels are within limits for DC accuracy Do the following substeps test channel 1 first then proceed on to the other channels a b Set the vertical SCALE to 100 mV Press GROUP MENU Vertical Controls main gt Offset side Use the keypad to set vertical offset to 2 7 V The baseline level will move off screen Set the generator to 3 V The DC test level should appear on screen If it doesn t return the DC accuracy check has failed for the current channel Press MEASURE Select Measrmnt for Ch x main Press the side menu button more until the menu label Mean appears in the side menu its icon is shown at the left Press the side menu button Mean Press CLEAR MENU Read the measurement results at the Mean measurement readout See Figure 4 8 4 29 Performance Tests Tek Run 100 5 5 Average First set the offset The baseline trace moves vertically off screen 2 9834 V Second input a DC level equal to the offset plus 3 divisions Third turn on the Measurement called mean and read the results here M Soons Edge sep 1993 12 14 17 Figure 4 8 Measurement of DC Accuracy g Check that the Mean measurement readout is within the limits listed in
86. Averaged with Coaxial Adapter DC Voltage Measurement Accuracy Not Averaged with P6240 Probe Offset Accuracy Analog Bandwidth with P6240 Probe or Coaxial Adapter Any sample 4 0 x reading Offset Offset Accuracy 0 13 Divs x V Div 0 6 mV Delta Volts between any two samples acquired under the same setup and ambient conditions 4 0 x reading 0 26 Divs x V Div 1 2 mV Any sample 1 5 x reading Offset Offset Accuracy 0 13 Divs x V Div 0 6 mV Delta Volts between any two samples acquired under the same setup and ambient conditions 1 5 x reading 0 26 Divs x V Div 1 2 mV V Div Setting Offset Accuracy 50 mV Div to 499 mV Div 2 of offset 3 Divs x V Div 500 mV Div to 2 V Div 2 of offset 2 Divs x V Div Limits given for an ambient temperature range of 0 C to 430 Derate upper bandwidth frequencies by 5 0 MHz foreach C above 430 C V Div Setting Bandwidth 200 mV Div to 2 V Div DC to 500 MHz 100 mV Div to 199 mV Div DC to 450 MHz 50 mV Div to 99 9 mV Div DC to 350 MHz Delay Between Channels with Coaxial Adapter 1 4 lt 200 ps for any two channels with equal V Div settings TLS 216 Service Manual Warranted Characteristics Table 1 2 Warranted Characteristics Signal Acquisition System Cont Name Delay Between Channels with P6240 Probe Cross Talk Channel Isolation Description lt 500 ps for any two channels with equal
87. CH15 Pk Pk Reading NA CH16 Pk Pk Reading NA and CH2 2005 CH1 and CH3 CH1 and CH4 L 2065 CH1 and CH5 ha CH1 and CH6 L 200 5 CH1 and CH7 006 1 CH8 Eos 200 5 CH1 CH9 222202 200ps 1 and CH10 L 20065 CH1 and CH11 222 2 2006 CH1 and 12 5 200 ps CH1 CH13 e a a 200 ps CH1 and CH14 WWO eee 200 ps TLS 216 Service Manual 4 19 Performance Tests TLS 216 Test Record Cont Instrument Serial Number Certificate Number Temperature RH 90 Date of Calibration Technician Delay Between Channels CH1 CH15 CH1and CH16 Long Term Sample Rate CH1 4 0 Div CH5 4 0 Div CH9 4 0 Div CH13 4 0 Div Delta Time C1 Per Reading 19 760 ns 20 240 ns C5 Per Reading 19 760 ns 20 240 ns C9 Per Reading 19 760 ns 20 240 ns C13 Per Reading 19 760 ns 20 240 ns Logic Triggering Pulse Glitch Main Generator Readings At 10 ns 56 2 MHz N A 250 ns 2 27 MHz N A 2 5 us 244 kHz N A Pulse Width Main Generator Readings At 10 ns 56 2 MHz N A 250 ns 2 27 MHz N A 2 5 us 244 kHz N A Pulse Glitch Delayed Generator Readings At 10 ns 56 2 MHz N A 250 ns 2 27 MHz N A 2 5 us 244 kHz N A Pulse Width Delayed Generator Readings At 10 ns 56 2 MHz N A 250 ns 227MHZ N A 2 5 us 249kHz N A 4 20 TLS 216 Service Manual Performance Tests TLS 216 Test Record Cont Instrument
88. Calibration and Test Data Report Standard Accessories as b EE EA RERUM Optional Accessories 2252022 229 EEG Accessory SOftWate s uc oper ERE Warranty Information 1 4 4 4 4 1 4 1 1 4 4 4 Electrical Parts 484 8 1 Diagrams c4 EG EE RR ace kek FOES UE EAM Uu REA 9 1 Symbols ERR ipee E UM per s 9 1 Replaceable Parts 66 10 1 Parts Ordering Information 10 1 Using the Replaceable Parts List 10 2 Table of Contents List of Figures Figure 2 1 Map of Display Functions 2 8 Figure 2 2 Vertical Readout Displaying Two Group Readouts 2 15 Figure 2 3 The Vertical Readout and Vertical Controls Menu 2 17 Figure 2 4 Groups Valid and Invalid 2 20 Figure 2 5 Display Modes 2 22 Figure 4 1 Map of Display Functions 4 3 Figure 4 2 Verifying Adjustments and Signal Path Compensation ess RR re ota EE RUE 4 6 Figure 4 3 Test Hookup for Functional Tests 4 8 Figure 4 4 Square Wave Calibration and DC Baseline Signals 4 9 Figure 4 5 Measurement of DC Offset
89. Compensator Time Required Approximately 5 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 It must also pass the Signal Acquisition System Checks beginning on page 4 25 STOP If your logic scope was ordered configured as Option 15 it was shipped without the 16 probes included with the standard configured logic scope You must have one probe to check the probe compensator output and may wish skip this test Read the information under Option 1S on page 4 1 before continuing Procedure 1 Install the test hookup and preset the logic scope controls a Install one probe on channel 1 Connect the probe tip to a PROBE CALIBRATION signal output on the front panel See Figure 4 21 SO OS 2252 0000 Figure 4 21 Test Hookup for Probe Compensator Check b Press save recall SETUP gt Recall Factory Setup main gt Ok Confirm Factory Init side Setthe vertical SCALE to 200 mV TLS 216 Service Manual 4 51 Performance Tests d Press SHIFT then press ACQUIRE MENU Mode main gt Average side Use the keypad to set the number of averages to 64 2 Confirm Probe Compensator output voltage is within limits a Press MEASURE Select Measurement for Ch x main b Repeatedly press the side menu button more until Pk Pk appears the side menu Press Pk Pk c Repea
90. Confirm that the following statements are true a The trigger Threshold readout in the main menu changes with the trigger THRESHOLD knob 4 11 Brief Procedures 4 12 The trigger THRESHOLD knob can trigger and untrigger the square wave signal as you rotate it Leave the signal untriggered Pressing SET LEVEL TO 50 triggers the signal that you just left untriggered Leave the signal triggered 3 Verify that the delayed trigger system operates 5 a Press HORIZONTAL MENU gt Time Base main gt Delayed Triggerable side Press the side menu button Delayed Only Set the horizontal SCALE for the D delayed time base to 250 us Press SHIFT then press DELAYED TRIG gt Threshold main gt Threshold side Confirm that the following statements are true m The trigger Threshold readouts in the main and side menus change as you turn the general purpose knob m The general purpose knob can trigger and untrigger the square wave signal as you rotate it Leave the signal untriggered m Pressing SET LEVEL 50 triggers the signal that you just left untriggered Leave the signal triggered Press the main menu button Delay by Time Use the keypad to enter a delay time of 1 second Verify that the trigger READY indicator on the front panel flashes about once every second as the waveform is updated on screen Verify main and delayed triggering for the logic triggers a Press HORIZONTAL MEN
91. ILITY OF SUCH DAMAGES 5 Table of Contents Specification Operating Information TLS 216 Service Manual List of Fig r S cere er re 6 List of Tables 2 ver RI e yh teh nm er Service Safety Preface rU DR eR ur ated data ee Manual Structure 22264 veu Evi ee rele Ds oer Be D dm Soe at e eut Soie oe LA E deus Modules DR etn tate RETE EP EN Safety oboe ce ME bI e ba ae pa Symbols cce ERES pne re I E ERO Operating Related 8 2 2 Introduction Before Servicing c eese REPE T Strategy for Servicing Tektronix Service eot epp ve bU PEE CR eo pu ERREUR a Warranty Repair Service Repair or Calibration Service Delf SERVICES Eee nexus Latte elo et e tts ens Product Warranted Characteristics Typical Characteristics N
92. Item 11 one 50 Q precision Long Term Sample Rate coaxial cable Item 4 one coaxial adapter Item 13 and one SMA to BNC Delay Time and Delta adapter Item 14 Time Measurements Time Required Approximately 40 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 Procedure 1 Install the test hookup and preset the instrument controls a Connect through a 50 Q precision coaxial cable a coaxial adapter and an SMA to BNC adapter the time mark output of a time mark generator to channel 1 Set the output of the generator for 10 ms markers See Figure 4 13 4 36 TLS 216 Service Manual Performance Tests TLS 216 Service Manual Time Mark Generator O Q 3 gt ex Que O 5 C 0000 0000 0000 Coaxial Adapter SMA to BNC Adapter Figure 4 13 Test Hookup for Time Base System Check b Press save recall SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side Setthe vertical SCALE to 500 mV d Press SET LEVEL TO 50 e Use the vertical POSITION knob to center the test signal on screen f Press TRIGGER MENU gt Mode amp Holdoff main gt Normal side Press HORIZONTAL MENU Record Length main 1000 Points in 20divs main h Press the main menu button Trigger Position Press the side menu button Set to 20 i Press SHIFT th
93. ON PARTS MFG CO 1800 NW 216TH AVE HILLSBORO OR 97124 6629 TK1499 AMLAN INC 97 THORNWOOD RD STAMFORD CT 06903 2617 TK1899 MINNESOTA MINING AND MFG CO 5400 PO BOX 1228 COLUMBIA MO 65205 TK2162 DERBY MFG 24350 STATE ROAD 23 SOUTH SOUTH BEND IN 46614 9696 TK2193 PHOTO AND SOUND 820 NW 18TH AVENUE PORTLAND OR 97209 TK2248 WESTERN MICRO TECHNOLOGY 1800 NW 169TH PL SUITE B 300 BEAVERTON OR 97006 TK2338 ACC MATERIALS EDSNYDER BLDG 38 302 BEAVERTON OR 97077 TK2432 UNION ELECTRIC 15 F 1 FU SHING N ROAD TAIPEI TAIWAN ROC TK2469 UNITREK CORPORATION 3000 LEWIS amp CLARK WAY SUITE 2 VANCOUVER WA 98601 TK2500 SOLECTEK ACCESSORIES CORP 6370 NANCY RIDGE DR SAN DIEGO CA 92121 SUITE 109 0J R05 TRIQUEST CORP 3000 LEWIS AND CLARK HWY VANCOUVER WA 98661 2999 0 9P9 GEROME MFG CO INC PO BOX 737 403 NORTH MAIN NEWBERG OR 97132 0 01 STAUFFER SUPPLY 810SE SHERMAN PORTLAND OR 97214 0 05 NORTH STAR NAMEPLATE 1281 S NE 25TH HILLSBORO OR 97124 00779 AMP INC 2800 FULLING MILL HARRISBURG PA 17105 PO BOX 3608 07416 NELSON NAME PLATE CO 3191 CASITAS LOS ANGELES CA 90039 2410 1DM20 PARLE X CORPORATION 7 INDUSTRIAL WAY SALEM NH 03079 LAMINATED CABLE DIV 1 96 ELECTRIC 11866 SLATER AVE NE KIRKLAND WA 98034 2W733 COOPER INDUSTRIES INC 2200 US HIGHWAY 27 SOUTH RICHMOND IN 47375 0010 BELDEN DIVISION PO BOX 1980 22526 BERG ELECTRONICS INC DUPONT 857 OLD TRAIL RD ETTERS PA 17319 24931 SPECIALTY CONNECTOR CO INC 2100 EARLYWOOD DR FRANKLIN IN 46131 PO BOX 547
94. Press SHIFT DELAYED TRIG 441 Performance Tests 4 42 e Repeat steps 2c through 2o When performing step 2e ignore the front panel LEDs Instead decrease the output frequency until the word D TRIG appears at the top center of the screen 4 Confirm the trigger system is within time accuracy limits for main and delayed sequence triggering a 0 Press save recall SETUP Recall Factory Setup main gt OK Confirm Factory Init side Press TRIGGER MENU Mode amp Holdoff main gt Normal side Press MEASURE Select Measurement for Ch x main Repeatedly press the side menu button more until Frequency appears in the side menu Press Frequency Set the output of the sine wave generator to 3 13 MHz set the horizontal SCALE to 250 ns Set the vertical SCALE to 100 mV Press TRIGGER MENU Type Sequence pop up Press the main menu button Define End Pattern then press the side menu button Ch Index Use the numeric keypad to set the channel index to 2 Press the side menu button Set to Don t Care then press the side menu button Set to Low Press the main menu button Sequence Trig When then press the side menu button Time Use the numeric keypad to set the time to 200 ns Press the side menu button Time Slowly decrease the generator output frequency until the signal becomes untriggered the TRIG D LED turns off Check that the C1 Freq readout is greater than 2 27 MHz Press
95. Qty 2 Used with probe 013 0280 00 Hand Held Adapter Qty 2 Used with probe 013 0281 00 Marker Tags Qty 3 Used with probe 334 8632 00 Eight Cable Loom Qty 6 Used with probe 352 1039 01 Logic Scope to Coax Adapter Qty 2 013 0282 00 Optional Accessories You can also order the following optional accessories Table 7 3 Optional Accessories Accessory Part Number TLS Service Manual 070 8831 00 Plotter GPIB and Centronics Standard HC100 Instrument Cart K420 Rack Mount Kit for field conversion 016 1236 00 Oscilloscope Camera C9 Oscilloscope Camera Adapter 016 1154 00 Soft Sided Carrying Case 016 0909 01 Transit Case 016 1135 00 GPIB Cable 1 meter 012 0991 01 GPIB Cable 2 meter 012 0991 00 Logic Scope to Coax Adapter 013 0282 00 FlexLead Adapter Used with probe 25x25 16 Pin SOIC Adapter Used with probe 013 0242 00 24 Pin DIP Adapter Used with probe 003 0823 00 68 Pin PLCC Adapter Used with probe 013 0250 00 TLS 216 Service Manual 7 3 Options and Accessories 7 4 Accessory Software following optional accessories are Tektronix software products recom mended for use with your logic scope Table 7 4 Accessory Software Software Part Number EZ Test Program Generator 545 030 Wavewriter AWG and waveform creation 53 400 TekTMS Test management system 53 001 LabWindows S3FG910 Warranty Information Check for the full warranty statements for this product
96. Resolder joint and clean with isopropyl alcohol Capacitors Damaged or leaking cases Corroded solder on Remove damaged module and replace with a fresh leads or terminals module from the factory Semiconductors Loosely inserted in sockets Distorted pins Firmly seat loose semiconductors Remove devices that have distorted pins Carefully straighten pins as required to fitthe socket using long nose pliers and reinsert firmly Ensure that straightening action does not crack pins causing them to break off Wiring and cables Loose plugs or connectors Burned broken or Firmly seat connectors Repair or replace modules frayed wiring with defective wires or cables Chassis Dents deformations and damaged hardware Straighten repair or replace defective hardware Cleaning Procedure Interior TLS 216 Service Manual Clean the inside of the logic scope as needed using the following procedure NOTE If after doing steps 1 and 2 a module is clean upon inspection skip the remaining steps Blow off dust with dry low pressure deionized air approximately 9 psi Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol 75 solution and rinse with warm deionized water A cotton tipped applicator is useful for cleaning in narrow spaces and on circuit boards CAUTION To prevent damage from electrical arcing ensure that circuit boards and components are dry before applying power to the logic scope
97. S 216 Service Manual 4 3 Introduction 4 4 TLS 216 Service Manual eT Brief Procedures Self Tests Verify Internal Adjustment Self Calibration and Diagnostics TLS 216 Service Manual The Self Tests use internal routines to confirm basic functionality and proper adjustment The standard accessory probes are the only equipment required The Functional Tests use the probe calibration output at the front panel as a test signal source to further verify that the logic scope functions properly The standard accessory probes and a floppy disk are the only equipment required These procedures use internal routines to verify that the logic scope functions and was adjusted properly Equipment Required None Time Required Approximately 40 minutes after warm up period Prerequisites Power on the logic scope and allow a 20 minute warm up before doing this procedure Procedure 1 Verify that internal diagnostics pass a Press SHIFT then press UTILITY gt System Diag Err pop up gt Area All pop up b Disconnect all input signals and probes from all sixteen channels Press Execute main gt OK Confirm Run Test side d Wait The internal diagnostics do an exhaustive verification of proper logic scope function This verification will take up to two minutes At some time during the wait a clock icon shown at left may appear on screen When the logic scope finishes the verification the resulting status w
98. Service Manual Tektronix TLS 216 Logic Scope 070 8831 02 This document applies for firmware version 1 00 and above Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to the Safety Summary prior to performing service Copyright Tektronix Inc All rights reserved Licensed software products are owned by Tektronix or its suppliers and are protected by United States copyright laws and international treaty provisions Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 or subparagraphs c 1 and 2 of the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 as applicable 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 Printed in the U S A Tektronix Inc Box 1000 Wilsonville 97070 1000 TEKTRONIX and are registered trademarks of Tektronix Inc BusForm GURU and QUICKCLIP are trademarks of Tektronix Inc TLS 216 WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three 3 years
99. Slope CH16 50 MHz Positive Slope Negative Slope AUX Trigger Input Positive Slope Negative Slope CH1 500 MHz Positive Slope Negative Slope CH2 500 MHz Positive Slope Negative Slope CH3 500 MHz Positive Slope Negative Slope CH4 500 MHz Positive Slope Stable Trigger f N A Negative Slope Stable Trigger N A CH5 500 MHz Positive Slope Stable Trigger N A Negative Slope Stable Trigger N A 4 22 TLS 216 Service Manual Performance Tests TLS 216 Test Record Cont Instrument Serial Number Certificate Number Temperature RH 90 Date of Calibration Technician Edge Trigger CH6 500 MHz Positive Slope N A Negative Slope N A CH7 500 MHz Positive Slope N A Negative Slope N A CH8 500 MHz Positive Slope N A Negative Slope N A CH9 500 MHz Positive Slope N A Negative Slope N A CH10 500 MHz Positive Slope N A Negative Slope N A CH11 500 MHz Positive Slope N A Negative Slope N A CH12 500 MHz Positive Slope N A Negative Slope N A CH13 500 MHz Positive Slope N A Negative Slope N A CH14 500 MHz Positive Slope N A Negative Slope N A CH15 500 MHz Positive Slope N A Negative Slope N A CH16 500 MHz Positive Slope N A Negative Slope N A Output Signal Checks Probe Calibrator Output Voltage
100. Table 4 2 Table 4 2 DC Accuracy Scale Setting Offset Setting Generator Setting Accuracy Limits 100 mV 42 898 V to 3 102 V 2 898 V to 3 102 V h Press GROUP MENU Group Definition main gt First Channel side Press the side menu button First Channel again if necessary to increment to the next channel to be tested i Move the test hookup to the selected channel j Repeat substeps d through i for all 16 channels Substeps h and i will not be necessary for channel 16 k Repeat substeps b and c reversing the polarity of the offset and generator settings as is listed in Table 4 2 1 Move the test hookup back to channel 1 4 30 TLS 216 Service Manual Performance Tests Check Analog Bandwidth TLS 216 Service Manual m Press GROUP MENU Group Definition main gt Last Channel side Use the numeric keypad to set the last channel to 1 n Repeat substeps d through i for all 16 channels Substeps h and i will not be necessary for channel 16 5 Disconnect the hookup a Setthe generator output to b Disconnect the test hookup at the input connector of channel 16 Equipment Required One high frequency leveled sine wave generator and its leveling head Item 10 one coaxial adapter Item 13 one SMA to BNC adapter Item 14 Time Required Approximately 1 hour and 25 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 Procedure 1 Instal
101. U gt Time Base main gt Main Only side Press TRIGGER MENU gt Type Pattern pop up Verify that the screen shows a triggered square wave signal Press HORIZONTAL MENU gt Time Base main gt Delayed Only side Verify that the trigger READY indicator on the front panel flashes about once every second as the waveform is updated on screen Remove the test hookup Disconnect the standard accessory probe from the channel input and the probe calibration terminals TLS 216 Service Manual Brief Procedures Verify the File System Equipment Required One 720 K or 1 44 Mbyte 3 5 DOS compatible disk formatted Time Required Approximately 5 minutes Prerequisites None Procedure 1 Preset the logic scope controls a b Insert the disk in the disk drive to the left of the monitor Press save recall SETUP gt Recall Factory Setup main gt Ok Confirm Factory Init side Set the horizontal SCALE to 250 us one click clockwise Notice the horizontal readout now displays 250 us at the bottom of the screen 2 Verify the file system works a Press save recall SETUP Save Current Setup main gt To File side Turn the general purpose knob to select the file to save Choose TEK SET With this choice you will save a file starting with then containing 5 numbers and a SET extension For example the first time you run this on a blank formatted disk or on the Example Programs
102. V Div settings gt 100 1 at 100 MHz and z 30 1 at the rated bandwidth for the sensitivity rating ofthe channel for any two channels having equal VIDiv settings Table 1 3 Warranted Characteristics Time Base System Name Sample Rate and Delay Time Accuracy Description 100 ppm over any interval gt 1 ms Seconds Div Time Base Accuracy 100 ppm over any interval gt 1 ms Delta Time Measurement Accuracy Time Measurement Accuracy 1 WI 100 ppm Reading Conditions Single shot sample mode 20 MHz Bandwidth selected 1 1 ns Repetitive 28averages 1 WI 100 ppm x Reading bandwidth selected 180 ps 1 The Waveform Interval WI is the time between the samples in the waveform record Table 1 4 Warranted Characteristics Triggering System Name Edge Trigger Accuracy Description Any channel 0 50 Divs from DC to 50 MHz increasing to 3 0 Divs at 500 MHz Pulse Sequence or Pattern Type Trigger Time Accuracy Single Channel Width or Limit Setting 2 4 ns to 35 ns Trigger Time Accuracy 5 of setting 0 5 ns 10 of setting 0 5 ns 01 of setting 450 ns 35 ns to 1 us 1 02 usto 1s Pulse Sequence or Pattern Type Trigger Time Accuracy Multiple Channels Pulse Sequence or Pattern Type Trigger Minimum Time Interval Edge Type Trigger Minimum P ulse Width Pulse Type Trigger Rearm Time Pulse Type Trigger Minimum P ulse Width Pattern Type
103. a coaxial adapter and an SMA to BNC adapter see Figure 4 23 To Main Trigger Out lt ODDO 000 UD Coaxial Adapter SMA to BNC Adapter Figure 4 23 Test Hookup for Main Trigger Output Check b Press save recall SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side Setthe horizontal SCALE to 250 us d Press SHIFT then press ACQUIRE MENU gt Mode main gt Average side Use the keypad to set the number of averages to 64 2 Confirm Main and Delayed Trigger outputs are within limits for logic levels a Use the vertical POSITION knob to center the display on screen b Press MEASURE Select Measurement for Ch 1 main TEL c Repeatedly press the side menu button until High and Low appear in the side menu their icons are shown at the left Press both TF side menu buttons High and Low See Figure 4 24 TLS 216 Service Manual 4 53 Performance Tests 1 Tek Run 200kS First turn on the paid Ree ee E measurements High and Low Second read the measurement results here GRP 1 111 1 00 3 2505 Edge ie Remove Gating Reference Measrmnt Setup Snapshot EE Measrmnt OFF Histogram Levels oS Figure 4 24 Measurement
104. a level that displays your digital waveforms properly For example if your waveforms are clipped in Analog mode they will be clipped in BusForm and Timing Diagram modes as well Clipping appears on screen Adjust the Vertical Scale knob until clipping stops To remove the display of a group do the following step Select the group and press the GROUP OFF button Alternately you could set the display mode to Off in the Display Mode menu Removing the display of a group also removes from the display any automated measurements being made on any waveforms in that group To Find More Information 2 24 For the complete operator instructions for the logic scope see the TLS 2 6 User Manual For general operating instructions on operating front panel controls and menus see General Operating Instructions on page 2 7 of this section For a general description of the logic scope see Product Description in Section 1 of this manual For general instructions for operating the internal diagnostic routines of the logic scope see on General Operating Instructions page 2 7 TLS 216 Service Manual y Circuit Description Logic Conventions Module Overview General Input Signal Path TLS 216 Service Manual This section describes the electrical operation of the TLS 216 Logic Scope using the major circuit blocks or modules This section has two main pa
105. alibra tion and repair services W A single repair and or adjustment m Calibrations using equipment and procedures that meet the traceability standards specific to the local area Annual maintenance agreements that provide for either calibration and repair or calibration only of the logic scope Of these services the annual maintenance agreement offers a particularly cost effective approach to service for many owners of the TLS 216 Logic Scope Such agreements can be purchased to span several years On Site Service The annual maintenance agreement can be purchased with on site service with repair and calibration done at your facility This service reduces the time your logic scope is out of service when calibration or repair is required TLS 216 Service Manual Introduction Self Service TLS 216 Service Manual Tektronix supports repair to the module level by providing Module Exchange and Module Repair and Return Module Exchange This service reduces down time for repair by allowing you to exchange most modules for remanufactured ones Tektronix ships you an updated and tested exchange module from the Beaverton Oregon service center typically within 24 hours Each module comes with a 90 day service warranty Module Repair and Return This service returns to you within 10 days the same module that you shipped to Tektronix The module shipped is repaired tested and returned to you from the Beaverton Oregon service
106. all SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side b Setthe horizontal SCALE for the M main time base to 25 ns Set the vertical SCALE to 200 mV d Press TRIGGER MENU gt Mode amp Holdoff main gt Normal side e Press SHIFT then press ACQUIRE MENU gt Mode main gt Average 16 side f Press MEASURE gt High Low Setup main gt Min Max side g Connect the signal output of a medium frequency sine wave generator to channel 1 through a 50 coaxial cable a coaxial adapter and an SMA to BNC adapter See Figure 4 18 Medium Frequency Sine Wave COCA Gia Generator Output 00000 00000 00000 1 1 O C fe eOO8 oc 0000 000 oo Coaxial Adapter SMA to BNC Adapter Figure 4 18 Test Hookup for Main Edge Trigger Sensitivity Checks 2 Confirm Main trigger system is within sensitivity limits 50 MHz a Setthe generator frequency to 50 MHz b Press MEASURE Select Measrmnt for Ch x Press the side menu button more until Amplitude appears the side menu its icon is shown at the left Press the side menu button Amplitude d Press SET LEVEL TO 50 TLS 216 Service Manual Performance Tests TLS 216 Service Manual Press CLEAR MENU Adjust the generator output until the C1 Amplitude readout indicates the amp
107. all the adjustment software You will also be prompted to specify several GPIB card configuration parameters b The adjustment software will be installed in a directory called TLS216 ADJ on your hard drive Be sure to read the files readme and release nts in that directory before you continue Store your installation disk Remove your installation disk and store in a secure place Equipment Required items that are listed for Software based Adjust ments under Purpose in Table 5 4 starting on page 5 4 1 Hook up the logic scope a Connect the GPIB cable Item 4 to the GPIB port at the computer rear panel When multiple GPIB cards are installed connect to the GPIBO card b Connect the GPIB cable Item 4 to the GPIB port at the logic scope rear panel Power on the logic scope Set up the logic scope a Press SHIFT then press UTILITY b Repeatedly press the main menu button System until I O is highlighted in the pop up menu c Press the side menu button TALK LISTEN d Use the keypad to set any address between 0 and 29 Enable the adjustment constants to be written a Locate the two small access holes on the right side of the logic scope cabinet near the front b Insert the adjustment tool Item 1 in the hole nearest the front of the logic scope about inch to engage the rocker switch c Push to rock the switch to its unprotected enabled position Adjustment Procedures 4 Lett
108. andbook H6 1 can be used where possible This parts list is indented to show the relationship between items The following example is of the indentation system used in the Description column 1 2 3 4 5 Name amp Description Assembly and or Component Attaching parts for Assembly and or Component END ATTACHING PARTS Detail Part of Assembly and or Component Attaching parts for Detail Part END ATTACHING PARTS Parts of Detail Part Attaching parts for Parts of Detail Part END ATTACHING PARTS Attaching parts always appear at the same indentation as the item it mounts while the detail parts are indented to the right Indented items are part of and included with the next higher indentation Attaching parts must be purchased separately unless otherwise specified Abbreviations conform to American National Standards Institute ANST standard Y1 1 TLS 216 Service Manual Replaceable Parts List CROSS INDEX MFR CODE NUMBER TO MANUFACTURER Manufacturer Address City State Zip Code 3109 FELLER 72 VERONICA AVE UNIT 4 SUMMERSET NJ 08873 53629 SCHURTER AG H 2015 SECOND STREET BERKELEY CA 94170 C O PANEL COMPONENTS CORP TKOIK MODERN METALS UNIT A K 5 F GOLD KING IND KWAlI CHUNG HONG KONG BLDG NO 35 41TAI LIN ROAD TK0488 CURRAN COIL SPRING INC 635 NW 16TH PORTLAND OR 97209 2206 TK0588 UNIVERSAL PRECISION PRODUCTS 1775 NW 216TH HILLSBORO OR 97123 TK1163 POLYCAST INC 9898 SW TIGARD ST TIGARD OR 97223 TK1465 BEAVERT
109. anel Assembly None Required Low Voltage Power Supply Complete Adjustment Processor Board Complete Adjustment Display Assembly Display Adjustment Only 1 If a firmware upgrade is done a complete adjustment is required Some adjustments depend on successful prior completion of other adjustments For example all the CATS tests associated with the Voltage Reference Adjust ment class must be passed before any other adjustments can be successfully completed The following table lists the adjustments and their dependencies Table 5 3 Adjustments and Dependencies Class of Adjustment Voltage Reference Adjustment Frequency Response Adjustment Prior Completion Requirements None Voltage Reference SPC and all tests Pulse Trigger Adjustment Display Adjustment Voltage Reference SPC and all tests None The test equipment required to adjust the TLS 216 Logic Scope is listed here Table 5 4 Test Equipment Fixtures and Supplies Item Number and Description l Adjustment Tool 2 Attenuator 10X Two required 5 4 Minimum Requirements Example Purpose Less than 1 8 inch diameter Tektronix part number Software based Adjustments and over 2 inches long 003 0675 00 used as a probe and Manu al Adjustments Ratio 10X impedance Tektronix part number Software based Adjustments 50 connectors female 011 0059 02 BNC input male BNC output TLS 216 Service Manual Adjustment Procedures Table 5
110. arranted Characteristics in the Specifications section Check Accuracy of Offset Equipment Required None Zero Setting Time Required Approximately 20 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 1 Preset the instrument controls a b f g Disconnect any input signals from all channels Press save recall SETUP Recall Factory Setup main gt Confirm Factory Init side Set the horizontal SCALE to 1 ms Press SHIFT then press ACQUIRE MENU gt Mode main gt Average 16 side Press DISPLAY gt Graticule main gt Frame side Press CURSOR Function main H Bars side Press CLEAR MENU 2 Confirm input channels are within limits for offset accuracy at zero offset Do the following substeps test channel 1 first and then proceed to the rest of the channels a b TLS 216 Service Manual Set the vertical SCALE setting to 200 mV Rotate the general purpose knob to superimpose the active cursor over the baseline DC test level Ignore the other cursor Read the measurement results at the absolute cursor readout see Figure 4 5 4 25 Performance Tests Tek Run 50 0kS 5 Average 492 52 Ignore the inactive cursor Align the active cursor to the DC baseline no input Then read the offset relative to ground reference
111. ate settings If you have more than one GPIB card installed this adjustment software assumes the first card referenced 0 See your GPIB card manual for information on how to determine which card is your 0 card Table 5 5 GPIB Board Configuration Board Settings GPIB PCII GPIB PCIIA Base 1 0 Address hex 2B8 2 1 Interrupt Line 7 7 DMA Channel 1 1 Systems using the combination card GPIB PCII IIA can be configured as either a GPIB PCII or a GPIB PCIIA STOP ALWAYS use this installation procedure when installing this software on a new computer This installation program uses parameters you supply see step 2 substep a to create a custom start up file on your hard disk directory After installation you will be instructed to run this start up batch file whenever you do software based adjustments so it can configure your computer properly before it runs the adjustment program Do not simply copy the software files from one computer to another since the start up batch file you copy may not match the computer you copy it to TLS 216 Service Manual Adjustment Procedures Software Based Adjustments TLS 216 Service Manual Create a working disk Using the proper DOS commands copy the TLS 216 Adjustment Software disk to a working disk Install the software to hard disk a Install your working disk in a floppy drive and type install You will be asked to specify the hard disk on which to inst
112. ates on channels and the waveforms they acquire only as individual groups To perform even basic operations on any waveform such as displaying vertically positioning and vertically scaling it you must first know how to include it in a group To more fully understand what a group is consider its characteristics Groups contain one or up to sixteen channels You must assign a channel to a group for it to be displayed See Figure 2 4 Groups use only contiguous channels For example a group can contain channels 5 through 10 but not channels 5 through 8 plus 10 Groups cannot share channels For example if Group 1 contains channel 10 no other group can include channel 10 Groups are the objects you display vertically scale and vertically position You can adjust a single channel like a group if you make it the only channel in a group and adjust that group Groups can be displayed in any of three display modes Analog BusForm or Timing Diagram Groups can have multiple channels up to 16 CH4 CH5 Groups can have one channel CH7 CH8 1 Groups cannot share channels CH 14 CH 15 CH 16 Figure 2 4 Groups Valid and Invalid TLS 216 Service Manual Operating Instructions for Waveform Groups To Define a Group To Delete a Group TLS 216 Service Manual To define a waveform group you select the group specify the channels it contains and designate one of the channels as the selected channel To do so
113. ation Procedures 6 40 Rear Panel Cables 5 Reinstallation a Do in reverse order steps 3 and 4 reversing the procedure outlined in each step to reinstall the assembly Then see the following procedures in the order listed to complete reassembly of the logic scope All Processor Display Board page 6 37 A74 DI Bus and Analog Power and Digital Power Cables page 6 33 m 23 SerPar Board page 6 35 Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 W Rear Cover and Cabinet page 6 19 1 Assemble equipment and locate modules to be removed Have handy a pair of needle nose pliers Item 6 and a 1 4 inch nut driver Item 7 a c If removing the GPIB cable do the following substeps Unplug the GPIB cable from its jack J35 of the processor display board Working from the rear panel and using the 1 4 inch nut driver unscrew the two hex headed mounting posts that secure the cable to the rear chassis Working from inside the logic scope lift the cable out of the rear chassis If removing any cable connected to the rear panel BNC connectors do the following a b c Do the procedure 70 Acquisition Board on page 6 41 Using a pair of needle nose pliers reach between the main chassis and the rear chassis and unplug the cable to be removed Lift it away from the logic scope to remove it Reinstallation Reverse substeps in steps 2 and 3 to reinstall any ca
114. aveform Display Color Scale 16 d in infinite persistence and variable persistence display styles Table 1 17 Nominal Traits GPIB Interface and Output Ports Name Description Video Output VGA DB 15 rear panel video connector noninterlaced levels comply with ANSI Standard R5343A GPIB Interface GPIB interface complies with IEEE Std 488 1987 RS 232 Interface RS 232 interface complies with EIA TIA 574 Centronics Interface Centronics interface complies with Centronics interface standard C332 44 Feb 1977 REV A 1 14 TLS 216 Service Manual Nominal Traits Table 1 18 Nominal Traits Fuse Rating Description Fuse Rating Either of two fuses may be used 0 25 x 1 25 UL 198 6 3AG 6 A FAST 250 V 5 mm x 20 mm IEC 127 5A T 250 V Table 1 19 Nominal Traits Mechanical Name Description Weight 12 3 kg 29 Ibs with front cover 24 7 kg 54 Ibs when packaged for shipment Dimensions Height 193 mm 7 6 in with the feet installed Width 445 mm 17 5 in with handle Depth 434 mm 17 1 in with front cover installed Cooling Method Finish Type Forced air circulation with no air filter Tektronix Blue vinyl clad material on an aluminum cabinet Construction Material Weight of Rackmounted Instrument and Rackmount Conversion Chassis parts constructed of aluminum alloy front panel constructed of plastic laminate circuit boards constructed of glass laminate Cabinet
115. ber of divisions from center screen from this menu instead of using the Vertical POSITION knob How to Select Groups and Channels 2 18 To Select a Group The logic scope applies the control changes you make such as vertical band width offset position and scale to the selected group To make these changes to a group or to define a group choose the channels the group contains its display mode and so on you must first select it To select a live waveform group one that can acquire waveforms as opposed to a reference waveform group that can only store and display them do the following steps 1 Press any of group selection buttons GROUP 1 through GROUP 4 on the right side of the display to select any one of groups 1 4 2 Press SHIFT and repeat step 1 to select any one of groups 5 8 Note that the labels GROUP 5 through GROUP 8 are shifted functions of the GROUP 1 through GROUP 4 buttons When selecting groups note the following operating characteristics m The logic scope highlights the selected group It also displays its group reference indicator left of the graticule and its group readout label in reverse video See Figure 2 3 m The logic scope creates the group automatically if you select a group not yet defined It creates it using the first channel not allocated to another group It displays it using Analog display mode m The logic scope displays all groups except those undefined deleted or those whic
116. bles removed The routing of each rear cable removed in step 2 is shown in Figure 6 18 on page 6 42 See the procedure A70 Acquisition Board to reinstall the acquisition board if it was removed TLS 216 Service Manual Removal and Installation Procedures A10 Acquisition Board 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 b Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 Do the procedure A74 DI Bus and Analog Power and Digital Power Cables page 6 33 to remove the D1 bus and the interconnect cables d Do the procedure Input Cable Assembly page 6 29 to disconnect the 16 input cables from the acquisition board Do not remove the input cable assembly from the front subpanel 2 Orient the logic scope Set the logic scope so its top is down on the work surface and its front is facing you 3 Remove the Acquisition Board Use Figure 6 18 as a guide a Disconnect the cables from AUX TRIGGER INPUT at J600 MAIN TRIGGER OUT at J300 DELAYED TRIGGER OUT at J301 b Remove the two screws used to secure the noise reduction shield to the rear chassis c Remove the eight screws that mount the acquisition board to the main chassis and lift the board away from the main chassis to complete removal 4 Reinstallation Do in reverse order substeps 3a 3c reversing each step to reins
117. bleshooting 0000000 OOOOOOO 0000000 J5 Figure 6 39 A11 DRAM Processor Display Module View of Lower Left Corner 6 74 TLS 216 Service Manual ssSH Options and Accessories Options Options A1 A5 International Power Cords Option B1 Service Manual Option 1B Coaxial Adapter Set Option 1K K420 Instrument Cart Warranty Plus Service Options TLS 216 Service Manual This section describes the various options as well as the standard and optional accessories that are available for the TLS Logic Scope The following options are available Besides the standard North American 110 V 60 Hz power cord Tektronix ships any of five alternate power cord configurations with the logic scope when ordered by the customer Table 7 1 International Power Cords Power Cord Universal European 220 V 50 Hz A2 UK 240 V 50 Hz A3 Australian 240 V 50 Hz A4 North American 240 V 60 Hz A5 Switzerland 220 V 50 Hz When Option B1 is ordered Tektronix ships a service manual with the logic Scope With this option Tektronix ships a set of 16 coaxial adapters These adapters replace the standard P6240 probes and provide a 50 9 SMA conn
118. bly Reinstallation See reinstallation instructions in Disassembly for Cleaning This procedure is for disassembly of the TLS 216 Logic Scope into its individual modules so they can be cleaned For the cleaning instructions see nspection and Cleaning which begins this section 1 2 3 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 1 15 Torx tip Items 1 and 2 a 1 20 Torx tip Item 4 a flat bladed screwdriver Item 5 and a pair of angle tip tweezers Item 9 b Familiarize yourself with the modules illustrated in Figures 6 1 6 2 and 6 3 Remove external modules Do in order the following procedures They are found under Procedures for External Modules which starts on page 6 15 a Line Fuse and Line Cord page 6 17 b Rear Cover and Cabinet page 6 19 c Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 d Front Subpanel page 6 52 and Display Frame Assembly page 6 48 Remove the outer chassis modules Do in order the following procedures They are found under Procedures for Outer Chassis Modules which start on page 6 29 a Fan page 6 33 b 14 DI Bus and Analog Power and Digital Power Cables page 6 33 c A23 SerPar Board page 6 35 All Processor Display Board page 6 37 e Cover and Board Brackets page 6 39 f Input Cable Assembly page 6 29 TLS 216 Service Manual Removal and Installation Proced
119. ce Test Offset Accuracy Zero Setting CH1 Offset CH2 Offset CH3 Offset CH4 Offset CH5 Offset CH6 Offset CH7 Offset CH8 Offset CH9 Offset CH10 Offset CH11 Offset CH12 Offset CH13 Offset CH14 Offset CH15 Offset CH16 Offset CH1 Reading 520 mv CH2 A Reading MEmV 20 CH3 A Reading 0 ff l 520 mV CH4 A Reading 520 mV CH5 A Reading 0 1 l 520 mV CH6 Reading 0 ff Metta 520 mV CH7 A Reading Mm i 520 mV CH8 Reading 520 mV CH9 A Reading 480mV 0 520 mV CH10 Reading 480mV 0 ______ 520 mV CH11 Reading 480mV 0 520 mV CH12 A Reading 520 mV CH13 A Reading 480mV 0 ______ 520 mV CH14 Reading 480mV 0 2 ______ 520 mV TLS 216 Service Manual 4 17 Performance Tests TLS 216 Test Record Cont Instrument Serial Number Certificate Number Temperature RH 90 Date of Calibration Technician Performance Test Minimum Incoming Outgoing Maximum CH15 Reading 520 mV CH16 Reading 520 mV DC Accuracy CH1 2 7 V Offset 2 898 V 3 102 V 2 7 V Offset 2 898 V 3 102 V CH2 2 7 V Offset 2 898 V 3 102 V 2 7 V Offset 2 898 V 3 102 V CH3 2 7 V Offset 2 898 V 3 102 V 2 7 V Offset 2 898 V 3 102 V CH4 2 7 V Offset 42 898 V 13 102 V 2 7 V Offset 2 898 V 3102V CH5 12 1 V Offset 42 898 V 13 102 V 2 7 V Offset
120. cessor Display module Perform the Low Voltage Power Supply trouble shooting procedure Figure 6 30 Display Troubleshooting Procedure 6 66 TLS 216 Service Manual Troubleshooting J 18 pin 1 Horizontal Sync J 18 pin 2 Vertical Sync 10 0 5 5 8 Acqs chi 2 00V ME 2 00V M5 00us Chau Figure 6 31 Horizontal and Vertical Sync Signals SiH 25 0 5 5 835 Acqs White Level gt J 62 pin 1 Video Black Levels Blanking Levels E i fud io mv 3 4 A12 00gs Chi 7 524mv Figure 6 32 A Video Signal with White Black and Blanking Levels TLS 216 Service Manual dv 6 67 Troubleshooting This procedure helps you determine whether the A10 Acquisition or the A11 DRAM Processor Display module is bad Replace the A14 D1 Bus module Be sure connectthe A14 D1 Bus module correctly the silkscreen on the module will help you correctly orient the module Select the extended diagnostics menu and run all the test suites the discussion of the Diagnostics on page 6 57 explains how to do this Do the Processor Acq tests pass now Yes There is a problem in the communica tion link between the A10 Acquisition and the A11 DRAM Processor Display module The A10 Acquisition most like ly failed so replace this module Run the Extended Diagnostics again Do the
121. chassis Reinstallation Do in reverse order steps 3 and 4 reversing the removal instructions in each step to reinstall the assembly See the procedure Rear Cover and Cabinet page 6 19 to complete reassembly of the logic scope Assemble equipment and locate modules to be removed Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 Find the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 on page 6 13 Orient the logic scope Set the logic scope so its left side is down on the work surface and its front is facing you Remove the D1 bus Grasp the D1 bus and pull it up from the logic scope to unplug it from its two plug in connectors J28 is the connector on the processor display board J100 is on the acquisition board Reverse these removal instructions to reinstall See Figure 6 13 6 33 Removal and Installation Procedures 6 34 4 Remove the analog power and digital power interconnect cables a Unplug the analog power cable at J26 on the display processor board at J5 on the low voltage power supply and at J700 on the acquisition board b Unplug the digital power cable at J27 on the display processor board at J6 on the low voltage power supply and at J101 on the acquisition board Analog and Digital Power Cables Interchangeable KES p y AS z D Jm 2 A14 D1 Bus Figure 6 13 A14 D1 Bus and Analog Power and Digital Pow
122. connect the test hookup at the input connector of channel 13 Trigger System Checks Check Accuracy for Logic Triggering TLS 216 Service Manual These procedures check either directly or indirectly those characteristics that relate to the Main and Delayed trigger systems and are listed as checked under Warranted Characteristics in the Specifications section Equipment Required One medium frequency leveled sine wave generator Item 9 one 10X attenuator Item 1 one precision coaxial cable Item 4 one coaxial adapter Item 13 and one SMA to BNC adapter Item 14 Time Required Approximately 1 hour and 35 minutes Prerequisites See page 4 15 Procedure 1 Install the test hookup and preset the instrument controls a Press save recall SETUP Recall Factory Setup main gt OK Confirm Factory Init side Set the horizontal SCALE to 10 ns Set the vertical SCALE to 100 mV Connect the output of a medium frequency leveled sine wave generator to channel 1 through a 50 2 precision coaxial cable a 10X attenuator an SMA to BNC adapter and a coaxial adapter See Figure 4 15 4 39 Performance Tests 4 40 Medium Frequency Sine Wave fem C OOO c3 Generator C C c 20 O PUS o000 0000 0000 pu Output Coaxial Adapter SMA to BNC Adapter 10X Attenuator
123. cross the pins of J 20 Replace the fan Is there 25 V across 27 pins 1 and 3 on the All DRAM Processor Display module See Figure 6 37 Replace the All DRAM Processor Display module Figure 6 29 A16 Low Voltage Power Supply Module Isolation Troubleshooting Procedure Cont TLS 216 Service Manual 6 65 Troubleshooting This procedure helps you determine whether the display orthe A11 DRAM Processor Display module is bad Is the display legible but the horizontal and or vertical sync do not look ok J18 pins 1 and 2 on the A11 DRAM Pro cessor Display module see Figure 6 39 have signals similar to Figure 6 31 Replace the A30 Display Assembly Power the logic scope off and discon nectthe cable from 5 on the A11 DRAM Processor Display module see Figure 6 39 then power back on Does J62 pin 1 on the A11 DRAM Pro cessor Display module see Figure 6 39 have video signal with the same levels as Figure 6 32 Are pins 1 and 2 at 25 V and 5 pins 3 and 4 at 5 1 V On the All DRAM Processor Display module probe 27 but DO NOT RE MOVE the cable from the connector The voltages will change if the A11 DRAM Processor Display is not connected to the power supply Are J 27 pin 1 at 425 V and J27 pin 17 at 45 1 V See Figure 6 37 Replace the All DRAM Pro
124. de menu button OK Compensate Probes c Wait Calibration of all 16 probes will take about 4 minutes d Verify that no failures occur If a failure occurs consult the error log SHIFT UTILITY gt System Diag Err pop up gt Error Log main to pinpoint the faulty probe 3 Return to regular service Press CLEAR MENU to exit the system menus and disconnect the probes The purpose of these procedures is to confirm that the logic scope functions properly The only equipment required is two standard accessory probes and a 3 5 720 K or 1 44 Mbyte floppy disk STOP These procedures verify functions that is they verify that the logic scope features operate They DO NOT verify that they operate within limits Therefore when the procedure calls for you to verify that a signal appears on screen that is about five divisions in amplitude or has a period of about six horizontal divisions etc do NOT interpret the quantities given as limits To check operation within limits proceed to the Performance Tests which begin on page 4 15 DO NOT make changes to the front panel settings that are not called out in the procedures Each verification procedure will require you to set the logic scope to certain default settings before verifying functions If you make changes to these 4 7 Brief Procedures Verify All Input Channels 4 8 settings other than those called out in the procedure you may obtain invalid results In th
125. dling modules in areas that have a floor or work surface covering capable of generating a static charge Table 6 1 lists the relative susceptibility of various classes of semiconductors Static voltages of 1 kV to 30 are common in unprotected environments Table 6 1 Relative Susceptibility to Static Discharge Damage Relative Susceptibility Semiconductor Classes Levels MOS or CMOS microcircuits or discrete circuits or linear 1 microcircuits with MOS inputs most sensitive Schottky signal diodes 3 Schottky TTL 4 High frequency bipolar transistors 5 JFET 6 7 Linear microcircuits TLS 216 Service Manual Maintenance Information TLS 216 Service Manual Table 6 1 Relative Susceptibility to Static Discharge Damage Cont Relative Susceptibility Semiconductor Classes Levels Low power Schottky TTL 8 TIL least sensitive 9 Voltage equivalent for levels voltage discharged from a 100 pF capacitor through resistance of 100 1 100 to 500 V 5 400 to 600 V 2 z 200 to 500 V 6 600 to 800 V 3z250V 7 400 to 1000 V est 4z500V 8 900 V 9 1200 V 6 3 Maintenance Information 6 4 TLS 216 Service Manual i Inspection and Cleaning General Care This section describes how to inspect for dirt and damage on and how to clean the exterior and interior of the TLS 216 Logic Scope Inspection and cleaning are don
126. do their steps in reverse order These procedures are found under Procedures for Inner Chassis Modules which start on page 6 46 m 430 Display Assembly and Supply Fuse page 6 48 W A16 Low Voltage Power Supply page 6 47 c Reinstall the outer chassis modules Do in the order listed the following procedures When doing these procedures do their steps in reverse order These procedures are found under Procedures for Outer Chassis Modules which start on page 6 29 m Input Cable Assembly page 6 29 6 55 Removal and Installation Procedures 6 56 Top Cover and Board Brackets page 6 39 All Processor Display Board page 6 37 A23 SerPar Board page 6 35 A14 DI Bus and Analog Power and Digital Power Cables page 6 33 Fan page 6 33 A10 Acquisition Board page 6 41 Reinstall external modules Do in the order listed the following procedures When doing these procedures do the steps in reverse order These procedures are found under Procedures for External Modules which starts on page 6 15 Front Subpanel page 6 52 Display Frame Assembly page 6 48 Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 Rear Cover and Cabinet page 6 19 Line Fuse and Line Cord page 6 17 TLS 216 Service Manual Troubleshooting Diagnostics TLS 216 Service Manual This section contains information and procedures designed to help you isolate faulty modules in the TLS 216 Logic Scope If a modul
127. dure page 6 19 to reinstall the rear cover and cabinet Do in reverse order steps 3 and 5 reversing each step to reinstall the flip stand then the handle caps if removed then the handle 6 27 Removal and Installation Procedures Push down to flex handle and flatten against cabinet then pull it out ZY 2 Handle Cap ESS Removal Handle Removal Flip Stand Removal Foot Removal L 6 28 TLS 216 Service Manual Figure 6 10 Cabinet Modules Removal Removal and Installation Procedures Procedures for Outer Chassis Modules Do the Access Procedure page 6 14 before doing any procedure in this collection The procedures found here listed in order presented follow Input Cable Assembly TLS 216 Service Manual Input Cable Assembly Probe Flex Circuit Replacement Fan A14 DI Bus and Analog Power and Digital Power Cables A23 SerPar Board 11 Processor Display Board Top Cover and Board Brackets Rear Panel Cables A10 Acquisition Board Floppy Disk Drive Rear Chassis Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 b Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 Orient the logic scope Set the logic scope so its top is down on the work surface and its front is facing you Remove the Input Cable Assembly a Unp
128. e as preventive maintenance Preventive maintenance when done regularly may prevent logic scope malfunction and enhance its reliability Preventive maintenance consists of visually inspecting and cleaning the logic scope and using general care when operating it How often to do maintenance depends on the severity of the environment in which the logic scope is used A proper time to perform preventive maintenance is just before logic scope adjustment The cabinet helps keep dust out of the logic scope and should normally be in place when operating the logic scope The logic scope front cover protects the front panel and display from dust and damage Install it when storing or transporting the logic scope Inspection and Cleaning Procedures AN Inspection Exterior TLS 216 Service Manual Inspect and clean the logic scope as often as operating conditions require The collection of dirt on components inside can cause them to overheat and breakdown Dirt acts as an insulating blanket preventing efficient heat dissipation Dirt also provides an electrical conduction path that could cause a failure especially under high humidity conditions CAUTION Avoid the use of chemical cleaning agents which might damage the plastics used in this logic scope Use only deionized water when cleaning the menu buttons or front panel buttons Use a 7596 isopropyl alcohol solution as a cleaner and rinse with deionized water Before using any other t
129. e needs to be replaced follow the Removal and Installation Procedures located in this section The logic scope has two levels of internal diagnostics that focus on verifying adjusting and if need be isolating faulty modules Both levels of internal diagnostics report any bad modules and or interfaces If a bad module and or interface is found use the troubleshooting procedures in this section to determine which module needs to be replaced The two levels of diagnostics are the short confidence set and the extended set that tests the logic scope circuitry in depth and takes more time At power on the logic scope automatically executes the short set The extended set is optional and is executed by using the following procedure STOP perform the following procedure AS WELL AS THOSE THAT FOLLOW this section the extended diagnostics must be enabled To ensure that they are check 53 on dip switch S1001 81001 is located near the front edge of the Processor Display board Set 83 to the closed position to enable the diagnostics Prerequisites Power on the logic scope and allow a 20 minute warm up before doing this procedure 1 Display the System diagnostics menu a Press SHIFT then press UTILITY b Repeatedly press the main menu button System until Diag Err is highlighted in the pop up menu 2 Run the System Diagnostics Press the main menu button Execute then press the side menu button OK Confirm Run Test
130. e used in procedures to help identify certain readouts and menu functions on screen Throughout this manual you will find various procedures which contain steps of instructions for you to perform To keep those instructions clear and consistent this manual uses the following conventions m Names of front panel controls and menu labels appear in boldface print m Names also appear in the same case initial capitals all uppercase etc in the manual as is used on the logic scope front panel and menus Front panel names are all upper case letters for example GROUP MENU and GROUP 1 Instruction steps are numbered The number is omitted if there is only step TLS 216 Service Manual Preface When steps require that you make a sequence of selections using front panel controls and menu buttons an arrow marks each transition between a front panel button and a menu or between menus Also whether a name is a main menu or side menu item is clearly indicated Press HORIZONTAL MENU Record Length main gt 500 points 10 divs side gt Trigger Position main Set to 20 side Using the convention just described results in instructions that are graphically intuitive and simplifies procedures For example the instruction just given replaces these five steps 1 Press the front panel button HORIZONTAL MENU 2 Press the main menu button Record Length 3 Press the side menu button 500 points in 10 divs
131. ead all information and heed all cautions in this section before connecting the logic scope to a power source CAUTION AC POWER SOURCE AND CONNECTION The logic scope operates from a single phase power source It has a three wire power cord and two pole three terminal grounding type plug The voltage to ground earth from either pole of the power source must not exceed the maximum rated operating voltage 250 volts Before making connection to the power source be sure the logic scope has a suitable two pole three terminal grounding type plug GROUNDING This logic scope is safety Class 1 equipment IEC designation All accessible conductive parts are directly connected through the grounding conductor of the power cord to the grounded earthing contact of the power plug 2 1 Installation ZN Power Cord Information 2 2 CAUTION The power input plug must be inserted only in a mating receptacle with a grounding contact where earth ground has been verified by a qualified service person Do not defeat the grounding connection Any interruption of the grounding connection can create an electric shock hazard For electric shock protection the grounding connection must be made before making connection to the input or output terminals of the logic scope A power cord with appropriate plug configuration is supplied with each logic scope Table 2 1 gives the color coding of the conductors in the power cord If y
132. earance between the base of the knob and the front panel Insert the tweezers between the knob and front panel and use them to remove the knob Reinstallation To reinstall align knob to shaft and push it in until it snaps TLS 216 Service Manual Removal and Installation Procedures When reinstalling the knobs note there are three Sizes Be sure to reinstall the proper size knob in the proper location Figure 6 4 Knob Removal Line Fuse and Line Cord 1 Assemble equipment and locate modules to be removed Have a flat bladed screwdriver Item 5 handy Locate the line fuse and line cord in the locator diagram External Modules Figure 6 1 2 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its rear is facing you If you are servicing the line fuse do the next step if you are servicing the line cord skip to step 4 TLS 216 Service Manual 6 17 Removal and Installation Procedures Line Fuse Fuse Cap i ys Remove line fuse Find the fuse cap on the rear panel See Figure 6 5 Now remove the fuse cap by turning it counter clockwise using a flat bladed screwdriver and remove the line fuse Reverse procedure to reinstall Remove line cord Find the line cord on the rear cover See Figure 6 5 Now remove the line cord retaining clamp by first unplugging the line cord from its receptacle Next grasp both
133. ection to the instrument With this option Tektronix ships the K420 Instrument Cart The cart can help you transport the logic scope around many lab environments The following options add to the services available with the standard warranty The standard warranty appears following the title page in this manual m Option M2 When Option M2 is ordered Tektronix adds two years of repair service to the standard warranty 7 1 Options and Accessories Option 1P HC100 4 Pen Plotter Option 1R Rackmounted Logic Scope Option 2P Phaser 200e Color Printer Option 9C Certificate of Calibration and Test Data Report Standard Accessories 7 2 m Option M3 When Option M3 is ordered Tektronix adds four logic scope calibrations one per year in the second through fifth years of service to the Option M2 service m Option M8 When Option 8 is ordered Tektronix adds four logic scope calibrations one per year in the second through fifth years of service to the standard warranty With this option Tektronix ships a four color plotter designed to make waveform plots directly from the logic scope without requiring an external controller It handles A4 and US letter size media Tektronix ships the Logic Scope when ordered with Option configured for installation in a 19 inch wide instrument rack Customers with instruments not configured for rackmounting can order a rackmount kit 016 1236 00 for field conversions
134. ectors number 3 in Figure 6 15 securing the circuit board to the rear plate b Separate the circuit board with attached cable number 1 from the rear plate with attached brackets number 2 Figure 6 15 Remove Circuit Board From Assembly 4 Reinstallation a Doinreverse order substeps 3a and 3b of this procedure b Reinstall the A23 SerPar Board assembly in the logic scope Do in reverse substeps 2a through 2c of this procedure See the following procedures in the order listed to complete reassembly of the logic scope m Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 W Rear Cover and Cabinet page 6 19 6 36 TLS 216 Service Manual Removal and Installation Procedures A11 Processor Display Board TLS 216 Service Manual d To ensure the A23 SerPar Board is working correctly perform the power up short diagnostics procedure described on page 6 57 Assemble equipment and locate modules to be removed a b Have handy a screwdriver with a size T 20 Torx tip Items 1 and 4 Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 Do the procedure A74 D1 Bus Analog Power and Digital Power Cables on page 6 33 to remove those interconnect cables Orient the logic scope Set the logic scope so its bottom is down on the work surface and its rear is facing you Disconnect the fan from processor display board Unplu
135. ed the input panel which was removed during the access procedure Lift the Input Cable Assembly out of the front subpanel do not unplug the assembly from the A10 Acquisition Board and route it out of the way Reverse the procedure to reinstall 4 Remove the probe flex circuit to be replaced Unplug it from J103 on the A10 Acquisition Board Pull the probe flex circuit away from the front subpanel It is held on by its sticky backing Route the non connector end of the flex circuit from the front through the front subpanel to complete removal 5 Clean the front subpanel a Use a lint free cloth dampened in isopropyl alcohol to thoroughly clean from the surface area on the front subpanel upon which the probe flex circuit mounts Remove as much adhesive as possible A small amount of adhesive from the flex circuit you removed will be left on the front of the chassis This is normal Using a second lint free cloth dampened with deionized water wipe the mounting surface of the front subpanel Let dry 6 Reinstall the Input Cable Assembly Do in reverse order substeps 3a and 3b STOP DO NOT touch the contacts on the probe flex circuit with your bare fingers You should wear clean cloth gloves that are free of lint when installing the probe flex circuit on the front chassis 7 Install the new probe flex circuit a Route the non connector end of the probe flex circuit from the rear of the subpanel through to t
136. em Checks Time Base System Checks Triggering System Checks and Output Signal Checks They check either directly or indirectly all the characteristics that are designated as checked in the Specifications The characteristics that are checked appear in boldface type under Warranted Characteristics beginning on page 1 3 The tests in this subsection comprise an extensive valid confirmation of performance and functionality given the following prerequisites The cabinet must be installed on the logic scope You must have performed and passed the procedures under Self Tests found on page 4 5 and those under Functional Tests found on page 4 7 m You must have performed Preparation Clear Probe Calibrations found on page 4 24 m The logic scope must have been last adjusted at an ambient temperature between 20 C and 30 C must have been operating for a warm up period of at least 20 minutes and must be operating at an ambient tempera ture between 4 C and 50 C The warm up requirement is usually met by completing the Self Tests and Functional Tests Read General Instructions and Conventions that start on page 4 1 before performing these procedures These procedures use external traceable signal sources to directly check warranted characteristics Table 4 1 shows the required equipment list Minimum Requirements Example Purpose Ratio 10X impedance 50 Tektronix part number Signal Attenuation connec
137. en press ACQUIRE MENU Press the main menu button Mode then press the side menu button Average 16 j Press MEASURE High Low Setup main gt Min Max side 2 Confirm Main and Delayed time bases are within limits for accuracies a Setthe horizontal SCALE of the Main time base to 1 ms Press SET LEVEL TO 50 as necessary to trigger the signal b Adjustthe horizontal POSITION so the trigger T is aligned to the center vertical graticule line Press HORIZONTAL MENU Time Base main gt Delayed Only side gt Delayed Runs After Main side d Setthe horizontal SCALE of the D delayed time base to 250 ns 4 37 Performance Tests e First align the trigger T to the Use the keypad to set delayed time to 10 ms Press 10 then SHIFT then m followed by ENTER Press SET LEVEL TO 50 as necessary to trigger the signal Check that the rising edge of the marker crosses the center horizontal graticule line at a point within 4 0 divisions of center graticule see Figure 4 14 n DN Tek Run 200MS s Sample Delay Time 10 000000ms Time Base center graticule line Second the horizontal modes DOME isses beet Main only are set Intensified n E au i Delayed Runs Third the horizontal scale for D time base is setand a 10 ms delay is entered Fourth the waveforms rising edge is checked to be within 4 0 horizontal divisions on the 4 3
138. ends the text and waveform information to the tube assembly as a video signal The display system also generates and sends vertical VSYNC and horizontal HSYNC sync signals to the tube assembly A VGA compatible video output is at the rear of the TLS 216 Master clocks for the acquisition system are generated by the circuitry on the A10 Acquisition board The circuitry makes up a phased locked loop The master clock is divided down by the A10 Acquisition circuitry under control of the processor system All information waveforms text graticules and pictographs is displayed by the A30 31 32 Display system The A30 Display Driver board generates the high voltages necessary to drive the display tube It also contains the video amplifier horizontal oscillator and the vertical and horizontal yoke driver circuitry The processor system sends instructions to and receives information from the Front Panel Processor on the A12 Front Panel board The Front Panel Processor reads the front panel switches and potentiometers Any changes in their settings are reported to the processor system The Front Panel Processor also turns the LEDs on and off and generates the bell signal Front panel menu switches are also read by the Front Panel Processor The processor sends any changes in menu selections to the processor system The TLS 216 Service Manual Circuit Description Rear Panel Low Voltage Power Supply Fan TLS 216 Service Manual ON
139. entilation Requirements A The following environmental requirements are provided to ensure proper operation and long logic scope life The logic scope can be operated where the ambient air temperature is between 4 C and 50 and can be stored in ambient temperatures from 22 C to 60 C After storage at temperatures outside the operating limits allow the chassis to stabilize at a safe operating temperature before applying power The logic scope is cooled by air drawn in and exhausted through its cabinet side panels by an internal fan To ensure proper cooling of the logic scope allow at least two inches clearance on both sides and 3 4 inch on the bottom of the logic scope The feet on the bottom of the logic scope provide the required clearance when set on flat surfaces The top of the logic scope does not require ventilation clearance CAUTION If air flow is restricted the internal power supply of the logic scope may temporarily shut down Applying and Interrupting Power 2 4 Power On Consider the following information when you power on or power off the logic scope or when power is interrupted due to an external power failure Upon power on the logic scope runs its power on self check If it passes the logic scope displays a passed status message and a prompt to press CLEAR MENU to continue If it fails the logic scope displays a diagnostic log that identifies the area s that failed and a prompt to
140. er Cables Removal 5 Reinstallation a Do in reverse order steps 3 and 4 reversing the procedure outlined in each step to reinstall the assembly b When installing the D1 bus be sure to orient it so the single connector at the bottom of the bus plugs into the acquisition board See the following procedures in the order listed to complete reassembly of the logic scope m Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 W Rear Cover and Cabinet page 6 19 TLS 216 Service Manual Removal and Installation Procedures A23 SerPar Assembly 1 Assemble equipment and locate module to be removed m Have handy a screwdriver with a size T 20 Torx tip Items 1 and 4 and one inch nutdriver Locate the A23 SerPar Board in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 2 Remove circuit board assembly a Using a screwdriver with size 1 20 Torx tip remove the two screws number 4 in Figure 6 14 securing the rear plate of the circuit board assembly Figure 6 14 Circuit Board Assembly Removal TLS 216 Service Manual 6 35 Removal and Installation Procedures b Disconnect the cable connector number 2 from the processor display circuit board connector number 1 c Pull out the A23 SerPar Board assembly number 3 from the rear of the logic scope 3 Remove circuit board from assembly a Using a 3 16 inch nutdriver remove the four lock conn
141. er Systems TLS 216 Service Manual e f Set the horizontal SCALE to 250 us Press CLEAR MENU to remove the menus from the screen 2 Verify that the time base operates Confirm the following statements a One period of the square wave probe calibration signal is about four horizontal divisions on screen Rotating the horizontal SCALE knob clockwise expands the waveform on screen more horizontal divisions per waveform period counter clockwise rotation contracts it and returning the horizontal scale to 250 us returns the period to about four divisions The horizontal POSITION knob positions the signal left and right on screen when rotated 3 Remove the test hookup Disconnect the probe from the channel input and the probe calibration terminals Equipment Required One P6240 probe Time Required Approximately 5 minutes Prerequisites None Procedure 1 Install the test hookup and preset the logic scope controls a e f Install the probe on channel 1 Connect the probe tip to the PROBE CALIBRATION signal on the front panel See Figure 4 3 on page 4 8 Press save recall SETUP gt Recall Factory Setup main gt Ok Confirm Factory Init side Press SET LEVEL TO 50 Set the vertical SCALE to 200 mV Set the horizontal SCALE for the M main time base to 250 us Press TRIGGER MENU gt Mode amp Holdoff main gt Normal side 2 Verify that the main trigger system operates
142. erating to 12190 m 40 000 ft Random Vibration Operating and Nonoperating Operating 0 31 gg from 5 to 500 Hz 10 minutes each axis Nonoperating 3 04 gprs from 5 to 500 Hz 10 minutes each axis TLS 216 Service Manual Typical Characteristics 1 12 TLS 216 Service Manual Nominal Traits This subsection contains a collection of tables that list the various nominal traits that describe the TLS 216 including both electrical and mechanical traits Nominal traits are described using simple statements of fact such as 16 all identical for the trait Input Channels Number of rather than in terms of limits that are performance requirements Table 1 12 Nominal Traits Input System Name Description Input P robe Type Tektronix P 6240 only Input Coaxial Adapter Type Tektronix part number 013 0282 00 Probe Input Coupling DC Input Probe Connector Type Amp Inc Amplimite coax Mix Amp part number 750019 1 Mates with Amp part number 750020 1 Table 1 13 Nominal Traits Signal Acquisition System Name Input Channels Number of Input Coupling Samplers Number of Digitized Bits Number of V Div Gain Sensitivity Settings V Div Fine Gain Range and Resolution Offset Voltage Range and Resolution Position Range Position Accuracy Analog Bandwidth Selections Description 16 all identical identified as Ch1 Ch2 Ch16 DC only 16 all identical one per cha
143. erimposed ground references The group reference indicator points to the midlevel for the group instead of the ground level However in BusForm mode the logic scope does not display waveform height in volts division but as a number of divisions that you specify between the HIGH and LOW levels group height Timing Diagram displays each waveform in the group as one or more of three digital logic levels like BusForm However unlike BusForm the logic scope vertically offsets the ground reference of each waveform so that the waveforms are separated vertically on screen The group reference indicator points to the midlevel of the last channel highest numbered included in the group OFF removes the display of all waveforms in the group Only the waveforms are turned off the group reference indicator trigger position and trigger bar indicators remain on screen You can select position and scale a group regardless of whether it is on or off To select a group display mode do the following steps 1 Press any of group selection buttons GROUP 1 through GROUP 4 on the right side of the display Or press SHIFT and then press any of group selection buttons GROUP 5 through GROUP 8 The MORE button allows you to select internally stored Ref waveform groups for display and manipulation The selected group is indicated by the lighted LED above each button 2 Press GROUP MENU Display main Analog Bus Timing Diagram or OFF side
144. etthe generator output to a reference frequency of 6 MHz Move the test hookup to the selected channel p Repeat substeps b through o for all 16 channels Substeps through o will not be necessary for channel 16 3 Disconnect the hookup Disconnect the test hookup at the input connector of channel 16 TLS 216 Service Manual 4 33 Performance Tests 4 34 Check Delay Between Channels Equipment Required One medium frequency leveled sine wave generator Item 9 one precision coaxial cable Item 4 one 50 terminator Item 3 one dual input coupler Item 7 two coaxial adapters Item 13 and two SMA to BNC adapters Item 14 Time Required Approximately 1 hour Prerequisites The logic scope must meet the prerequisites listed on page 4 15 STOP DO NOT use the vertical position knob to reposition any channel while doing this check To do so invalidates the test Procedure 1 Install the test hookup and preset the instrument controls a Press save recall SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side Set the horizontal SCALE to 500 ps Press SHIFT then press ACQUIRE MENU gt Mode main gt Average 16 side Press GROUP 2 Connect through a 50 Q precision coaxial cable followed by a 50 Q termination the output of a medium frequency sine wave generator to a dual input coupler See Figure 4 11 Connect the coupler to channels 1 and 2 through two coaxial
145. form display s vectors or dots intensified or non intensified samples and infinite or variable persistence Graticule format type Waveform interpolation filter and readout options From the Utility menu you can configure the GPIB port talk listen address etc and access internal routines for self diagnostics and self compensation Instructions for setting up communication over the GPIB are found in Section 5 Adjustment Procedures TLS 216 Service Manual Krug pP S G Operating Instructions for Waveform Groups The TLS 216 Logic Scope receives input signals through its channels but only displays those signals if the channels receiving them are assigned to waveform groups This section briefly describes basic principles for creating waveform groups and how to control them NOTE These instructions are at the level appropriate for servicing the logic scope The complete operator instructions are found in the TLS 216 User Manual NOTE These instructions do not cover the basic principles of operating the front panel interface For those instructions see General Operating Instructions on page 2 7 Vertical Readout To determine the composition first and last channel of any group displayed check the Vertical Readout at the bottom of the display See Figure 2 2 Selected Group A Group Readout First Channel i 2 2 1 00VM Current Group Label Setup
146. frequently Requirements for Performance Personnel Warm Up Period Access TLS 216 Service Manual Before you do this procedure you need to address the following requirements This procedure is only to be performed by trained service technicians This logic scope requires a 20 minute warm up time in a 20 C to 30 environment before it is adjusted Adjustments done before the operating temperature has stabilized may cause errors in performance Except when adjusting the display assembly the cabinet is not removed Instead you enable the internal adjustment constants of the logic scope to be written Two small holes in the chassis allow service personnel to insert a tool and push a switch to enable or disable the writing of new adjustment constants to non vola tile RAM Adjustment Procedures System Optional Peripherals Usage Test Equipment Performing the Adjustments The procedure that follows will tell you how and when to enable and disable the writing of adjustment constants Be sure to disable the switch when you have finished adjusting the logic scope The following computer and peripherals are required to adjust this logic scope Computer An IBM PC or a strict compatible is required The system must also be equipped as follows m Eight MHz clock speed or faster m DOS 3 2 or higher m 640K Resident RAM with 580 K Available RAM m A hard drive m high density floppy drive 3 5 inch 1 44
147. g Phillips screens on the sides of the disk Then pull out the disk c Toremove the disk drive and the disk bracket together remove the two T15 torque screws holding the bracket to the chassis Then remove the disk and the brackets as a unit TLS 216 Service Manual 6 43 Removal and Installation Procedures Floppy Disk Drive Drive Shield Drive Bracket Figure 6 19 Floppy Disk Removal 4 Reinstallation Do in reverse order substeps 3c then 3a or 3b then 3a to reinstall the floppy disk Then see the following procedures in the order listed to complete reassembly of the logic scope m Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 m Rear Cover and Cabinet page 6 19 6 44 TLS 216 Service Manual Removal and Installation Procedures Rear Chassis TLS 216 Service Manual Assemble equipment and locate modules to be removed a c Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 and a 1 20 Torx tip Item 4 Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 Install the front cover if it is not already installed Orient the logic scope Set the logic scope so its bottom is down on the work surface and its rear is facing you Remove the rear chassis Use Figure 6 20 as a guide when doing the following substeps a Unplug the GPIB interconnect cable at J32 of the processor display board Re
148. g the fan s power cable from J20 Remove the processor display board Use Figure 6 16 as a guide while doing the following substeps a Working from the rear panel remove the two screws mounting the support bracket in the rear panel Then lift it out from the rear panel Unplug the interconnect cable from the GPIB connector on the rear cover at J35 of the processor display board Disconnect the bus cable at J5 Unplug J62 video signal connector J51 Monitor VGA connector J37 RS232 Centronics connector and J38 floppy drive connector Grasp the board by its right and left sides and pull it towards the rear of the logic scope This will disconnect the processor display board from the eight board mounts securing the board above the top cover Lift the board up away from the logic scope chassis to complete the removal Reinstallation a Do in reverse order steps 3 through 4 reversing the removal instructions of each step to reinstall the processor display board See the procedures A74 DI Bus and Analog Power and Digital Power Cables page 6 33 A23 SerPar Board page 6 35 and Rear Cover Cabinet page 6 19 to complete reassembly of the logic scope 6 37 Removal and Installation Procedures First unplug the cables at J 38 and 35 Ve AR ES 138 Second slide A11 DRAM Processor Display board to the rear to release it from the board mounts then lift up to complete removal
149. gh liquid to dampen the cloth or applicator 1 Remove loose dust on the outside of the logic scope with a lint free cloth 2 Remove remaining dirt with a lint free cloth dampened in a general purpose detergent and water solution Do not use abrasive cleaners 3 Clean the light filter protecting the monitor screen with a lint free cloth dampened with either isopropyl alcohol or preferably a gentle general purpose detergent and water solution To access the inside of the logic scope for inspection and cleaning refer to the Removal and Installation Procedures in this section Inspect the internal portions of the logic scope for damage and wear using Table 6 3 as a guide Defects found should be repaired immediately If any electrical module is replaced check Table 5 2 in Section 5 to see if it is necessary to adjust the logic scope Table 6 3 Internal Inspection Check List Item Circuit boards Inspect For Loose broken or corroded solder connections Burned circuit boards Burned broken or cracked circuitrun plating Repair Action Remove failed module and replace with a fresh module Resistors 6 6 Burned cracked broken blistered condition Remove failed module and replace with a fresh module TLS 216 Service Manual Inspection and Cleaning Table 6 3 Internal Inspection Check List Cont Item Inspect For Repair Action Solder connections Cold solder or rosin joints
150. gn the alternate cursor to the 500 mV DC test level on screen f Read the measurement results from the delta A readout not the absolute readout See Figure 4 7 Check that the A readout on screen is between 480 mV and 520 mV Tek Run 100KS s Average First align a cursor to the DC baseline no input Second align the other cursor to the DC test level that you input Third read the results of the ADC measurement here COICOICOICOICO aimi ud ipd Inicia Edge sse iss 09 49 49 CC 2 Figure 4 7 Measurement of DC Gain Accuracy g Press GROUP MENU Group Definition main gt First Channel side Press the side menu button First Channel again if necessary to increment to the next channel to be tested h Setthe generator output to O V i Move the test hookup to the channel you select j Repeat substeps c through i for all 16 channels Substeps g through i will not be necessary for channel 16 3 Reestablish the initial test setup a Setthe generator output to b Move the test hookup back to channel 1 4 28 TLS 216 Service Manual Performance Tests TLS 216 Service Manual e Press save recall SETUP Recall Factory Setup main gt OK Confirm Factory Init side Press SHIFT then press ACQUIRE MENU gt Mode main gt
151. group readouts are removed from the Vertical Readout How to Adjust the Vertical Setup 2 16 To effectively use the vertical controls consider how they operate with regard to the group display mode group display modes are described on page 2 22 W The vertical position bandwidth and offset controls operate directly on the selected group regardless of its display mode Analog BusForm or Timing Diagram m The Vertical SCALE knob adjusts the vertical size of a group displayed in Analog mode on screen m Although the Vertical SCALE knob adjusts the scale used by the acquisition hardware regardless of the group display mode it does not alter the vertical size on screen of a group displayed in either BusForm or Timing Diagram mode You set the vertical size directly in divisions of difference between the logic HIGH and LOW values that these two modes display TLS 216 Service Manual Operating Instructions for Waveform Groups To Scale and Position To adjust the vertical scale and position of the selected waveform group use the Waveform Groups following procedure 1 To vertically scale the selected waveform group turn the Vertical SCALE knob Changing the vertical scale changes the volts per division setting to vertically expand or contract all waveforms in the group This knob controls the vertical size of the selected group only if its group display mode is Analog See page 2 24 for sizing groups set to other modes 2
152. h have their display mode set to Off See page 2 19 to learn how to remove and return a group from the display m The logic scope ignores attempts to select undefined groups when the defined groups have used up all 16 channels m The logic scope lights the LED above the button you press The LED lights regardless of whether you select a shifted group 5 8 or one that is not shifted 1 4 Therefore if you are not sure which group is selected look at the group readout It always indicates the selected group m The logic scope does not depend on the selected group to determine its trigger source You define the trigger source independently in the Main Trigger menu or Delayed Trigger menu TLS 216 Service Manual Operating Instructions for Waveform Groups To Select a Channel To Remove a Group from the Display TLS 216 Service Manual To select a reference waveform group as opposed to a live waveform group do the following steps 1 Press the MORE group selection button The More Group menu will appear 2 Press Reference Group main Select from Ref1 side through Ref4 side NOTE If references are empty appear shaded in the Select Ref menu you cannot display them If a reference group is turned off in its Display Mode menu selecting it switches its display mode to Analog so it is automatically displayed The logic scope also applies a limited number of control changes based on the selected channel
153. haracteristics Signal Acquisition System Table 1 9 Typical Characteristics Triggering System Table 1 10 Typical Characteristics Display and Data Handling Systems vues venie Table 1 11 Typical Characteristics Operating Environment Table 1 12 Nominal Traits Input System Table 1 13 Nominal Traits Signal Acquisition System Table 1 14 Nominal Traits Time Base System Table 1 15 Nominal Traits Triggering System Table 1 16 Nominal Traits Display System Table 1 17 Nominal Traits GPIB Interface and Output Ports vs Table 1 18 Nominal Traits Fuse Rating Table 1 19 Nominal Traits Mechanical Table 2 1 Power Cord Conductor Identification Table 2 2 Power Cord Identification Table 2 3 Effects of Corrupted Data Table 4 1 Test Equipment Table 4 2 DC Accuracy Table 4 3 Settings For Logic Trigger Accuracy Checks Table 5 1 Calibration Tests Table 5 2 Adjustments Required for Module Replaced Table 5 3 Adjustments and Dependencies Table 5 4 Test Equipment Fixtures and Supplies Table 5 5 GPIB Board Configuration Table 6 1 Relative Susceptibility to Static Discharge Damage Table 6 2 External Inspection Check List
154. he display rotation a Display the Composite test pattern m Leave the logic scope powered off m Set the DIP switch located near the front of the All DRAM Processor Display as follows Switch No Closed m Power on the logic scope m Press SHIFT then press UTILITY m Repeatedly press the main menu button System until Diag Err is highlighted in the pop up menu m Repeatedly press the main menu button Area until Display is highlighted in the pop up menu m Repeatedly press the side menu button until Composite appears in the side menu Push Composite Adjustment Procedures Press the main menu button EXECUTE then press the side menu button Ok Confirm Run Test b Make the adjustment Adjust RA01 TRACE ROTATION to minimize the display s tilt Use the frame around the display as a reference R401 is the second adjustment from the fan 3 Adjust the display brightness m Locate R403 BRIGHTNESS It is one of the adjustments on the left side of the instrument located just ahead of the fan It is the fourth adjustment from the fan W Observe the luminance patches using a 6X magnifier m Adjust R403 BRIGHTNESS until the background raster lines in the 5 luminance patch see Figure 5 2 just disappear while the lines in the 10 luminance patch are just visible when both are viewed through the magnifier 10 Patch 5 Patch Figure 5 2 Five and Ten Percent Luminance Patches 5
155. he front Plug in the connector end to J103 on the A10 Acquisition Board Peel the adhesive backing to expose the adhesive back of the probe flex circuit Carefully align the two holes in flex circuit to the corresponding pins that protrude through the front subpanel from the input cable assembly Maintain alignment while pressing along the entire front surface of the flex circuit to ensure adhesion to the front subpanel TLS 216 Service Manual Removal and Installation Procedures Fan A14 D1 Bus and Analog Power and Digital Power Cables TLS 216 Service Manual m Clean the surface of the probe flex circuit just installed using isopropyl alcohol and a clean lint free cloth Reassemble the logic scope See the following procedures in the order listed to complete reassembly of the logic scope m Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 W Rear Cover and Cabinet page 6 19 Assemble equipment and locate module to be removed Have handy a screwdriver with a size T 20 tip Items 1 and 4 Locate the fan in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its left side is facing you Disconnect the fan from processor display board Unplug the fan s power cable from J20 Remove the fan Remove the two screws securing the fan to the main chassis and lift the fan away from the
156. he logic scope warm up Allow a 20 minute warm up period before you begin step 5 Figure 5 1 Accessing the Protection Switch 5 Start the adjustment software a Change drives to your hard drive b Change directories to TLS 216 ADJ c Type ADJ216 d Follow the instructions as prompted on your computer screen 6 When adjustment has been completed CAUTION Be sure to disable the NVRAM Protection switch as instructed below to protect the adjustment constants against alteration a Locate the two small access holes on the right side of the logic scope cabinet near the front See Figure 5 1 5 8 TLS 216 Service Manual Adjustment Procedures b Insert the adjustment tool Item 1 in the hole nearest the rear of the logic scope about 1 2 inch to engage the rocker switch c Push to rock the switch to its protected disabled position Display Assembly Adjustment Rotation Brightness and Contrast Adjustment TLS 216 Service Manual STOP It is not necessary to do this procedure to perform a complete adjustment Only use this procedure to adjust the display assembly if it has been repaired or if brightness and contrast have become unsatisfactory Equipment Required One 6X magnifier Item 12 and one J16 Photometer with a J6503 Luminance Probe Item 11 Procedure 1 Access the inside of the logic scope See Removal and Installation Proce dures in Section 6 to remove the cabinet 2 Adjust t
157. ic Range with Coaxial Adapter 5 V DC Peak AC Input Dynamic Range with P 6240 P robe 15 V to 12 V DC Peak AC Maximum Input Voltage with Coaxial Adapter 5 V DC Peak AC Maximum Input Voltage with P 6240 Probe 25 V DC Peak AC Maximum Input Voltage Instrument F ront Panel 5 V DC Peak AC Table 1 2 Warranted Characteristics Signal Acquisition System Name Description DC Gain Accuracy with P6240 Probe 1 5 for time base settings of 50 mV Div to 2 V Div DC Gain Accuracy with Coaxial Adapter 4 0 for time base settings of 50 mV Div to 2 V D iv TLS 216 Service Manual Warranted Characteristics Table 1 2 Warranted Characteristics Signal Acquisition System Cont Name DC Voltage Measurement Accuracy Averaged with Coaxial Adapter Description For an average of gt 16 waveforms 4 0 x reading Offset Offset Accuracy 0 06 Div x V Div Delta Volts between any two averages of gt 16 waveforms acquired under the same setup and ambient conditions 4 0 x reading 0 1 Divs x V Div 0 3 mV DC Voltage Measurement Accuracy Averaged with P6240 Probe For an average of gt 16 waveforms 1 5 x reading Offset Offset Accuracy 0 06 Div x V Div Delta Volts between any two averages of gt 16 waveforms acquired under the same setup and ambient conditions 1 5 x reading 0 1 Divs x V Div 0 3 mV DC Voltage Measurement Accuracy Not
158. ile doing the following substeps a Unplug the display tube connector from the back of the display tube and the display tube yoke connector from the display circuit board J340 b Remove the two screws that secure the band circling the front of display tube to the front subpanel Carefully guide display tube forward to partially remove it from the front subpanel and to access the anode lead connected to the display tube WARNING High voltage is present on the anode lead Before unplugging the anode in the following substep you must discharge it ground a flat bladed screwdriver Item 5 with an insulated handle to the chassis through a suitable grounding strap Next probe under the insulating cap of the anode lead and touch the lead s metal conductor to discharge Repeat After unplugging the anode in substep d touch its metal conductor to the chassis for a few minutes to further ensure discharge c Discharge the anode lead as described in the immediately proceeding WARNING unplug it from the display tube and discharge that lead again see WARNING d Be sure you have read the WARNING on display tube handling and storage found at the start of this display tube removal procedure Then pull the display tube out through the front subpanel to complete removal Store as directed in the WARNING message 6 49 Removal and Installation Procedures Figure 6 22 Display Assembly Removal 5 Remove
159. ill appear on the screen e Verify that no failures occur f Press SHIFT then press UTILITY System Cal pop up g Verify that the word Pass appears in the main menu under the Voltage Reference Frequency Response and Pulse Trigger menu labels See Figure 4 2 4 5 Brief Procedures First the CAL menu Second a signal path am sconnect or otherwise remove all signals IS displayed running SPC Compensate Diag Err ke poxuaateny 16 minutes tu ry Signal Paths p oltage requency ulse system C Reference Response Trigger cat Tek Run 100kS s Sample Signal Path ompensatio Signal Path Compensation SPC corrects for DC inaccuracies caused bv temperature variations and or lone drift SPC can be run ime after the logic scope is should be run whenever the logic scope s ambient temperature has changed by more than 5 C or once a week if vertical settings of 100 mV div or less are used ected by any Input signals OK Pass Pass Pass compensation is run and is verified Third the adjustment sections are verified Verify Probe Function and Calibration 4 6 C Figure 4 2 Verifying Adjustments and Signal Path Compensation h Press Signal Path main gt Compensate Signal Paths
160. ion when turned or pushed Push HELP again to exit help mode To get help information on a menu item display the menu desired if you are in help mode exit help first Push HELP Now the menu buttons display information about their function when pushed Position of waveform record relative to the display screen General purpose knob readout Pulse Pattern Channel Side menu area Readouts for measurements move here when CLEAR MENU is pressed AC Line Auxiliary Rear Panel IO i 200mv M 500 5 Edge State Sequence Source chi Main menu display area Readouts in lower graticule area move here when CLEAR MENU is pressed Figure 2 1 Map of Display Functions 2 8 TLS 216 Service Manual General Operating Instructions How to Display Logic Scope Status How to Reset the Logic Scope How to Set Functions from the Front Panel 8 lt 175 TLS 216 Service Manual Push the SHIFT and then the STATUS front panel buttons to display the status menu You will find menu selections that display messages that reflect the state of the acquisition system the eight waveform groups and the trigger system Before beginning maintenance you might want to set the controls of the logic scope to their factory defaults To do so press the SETUP f
161. is aluminum and is clad in Tek Blue vinyl material 2 3 kg 5 Ibs for the rackmount conversion kit only 3 6 kg 8 Ibs Kit when packaged for shipment 12 3 kg 29 lbs plus weight of rackmount parts for the rack mounted instrument Option 1R 20 5 kg 54 lbs when the rackmounted instrument is packaged for domestic shipment Dimensions of Rackmount Instrument Height 178 mm 7 in Width 483 mm 19 in Depth 559 mm 22 in TLS 216 Service Manual 1 15 Nominal Traits 1 16 TLS 216 Service Manual Installation This section contains the information needed to operate the TLS 216 Logic Scope when servicing it The following topics are included m Installation details how to put the logic scope into service It covers power requirements power connection and operating environment It also details considerations for applying interrupting and removing power and provides instructions for repackaging the logic scope for shipment m General Operating Instructions describe how to turn on the logic scope and how to make basic operational settings from the front panel It also covers operation of the on board Help and Status features W Operating Instructions for Waveform Groups briefly describe basic principles for creating waveform groups and how to control them The logic scope displays a waveform only as part of a waveform group Supplying Operating Power A A TLS 216 Service Manual CAUTION R
162. is case just redo the procedure from step 1 STOP If your logic scope was ordered configured as Option IS it was shipped without the 16 probes included with the standard configured logic scope You must have the probes to do the following steps and may wish skip all the function tests except the last Read the information under Option 1S on page 4 1 before continuing Equipment Required Two P6240 probes Time Required Approximately 30 minutes Prerequisites None Procedure 1 Install the test hookup and preset the logic scope controls P6240 Not Connected Yet Figure 4 3 Test Hookup for Functional Tests a Install one probe on channel 1 Connect the probe tip to a PROBE CALIBRATION signal output on the front panel Connect the probe tip of a second probe to PROBE CALIBRATION signal output but do not install it yet b Press save recall SETUP gt Recall Factory Setup main gt Ok Confirm Factory Init side TLS 216 Service Manual Brief Procedures c Press GROUP MENU Cal Probes main gt OK Initialize Probes side d Setthe vertical SCALE to 500 mV e Press SET LEVEL TO 50 f Press GROUP MENU Group Definition main gt Last Channel side Use the numeric keypad to set the last channel to 16 2 Verify that all input channels operate Do the following substeps test channel 1 first and then proceed to the other channels
163. is section contains the following technical information This preparatory information that you need to properly do the procedures that follow List of tools required to remove all modules Three module locator diagrams for finding the External Modules see Figure 6 1 Outer Chassis Modules see Figure 6 2 and Inner Chassis Modules see Figure 6 3 in this logic scope Procedures for removal and reinstallation of the electrical and mechanical modules A disassembly procedure for removal of all the major modules from the logic scope at one time and for reassembly of those modules into the logic scope Such a complete disassembly is normally only done in order to completely clean the logic scope Instructions for doing the actual cleaning are found under Inspection and Cleaning at the beginning of this section from the line voltage source Failure to do so could cause serious injury or WARNING Before doing any procedure in this section disconnect the power cord death TLS 216 Service Manual 6 9 Removal and Installation Procedures List of Modules General Instructions Summary of Procedures 6 10 Section 10 lists all modules READ THE GENERAL INSTRUCTIONS THAT FOLLOW BEFORE REMOV ING A MODULE First read over the Summary of Procedures that follows to understand how the procedures are grouped Then read Equipment Required for a list of the tools needed to remove and install modules in this logic
164. k TLS 216 Service Manual Connect the Sense output of the generator through a second dual banana connector followed by a 50 2 precision coaxial cable to the other side of the BNC T connector Connect the BNC T connector to channel 1 through a coaxial adapter and an SMA to BNC adapter Press save recall SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side 4 43 Performance Tests 4 44 2 Confirm Main trigger system is within limits for trigger threshold accuracy a Press GROUP MENU Vertical Controls main gt Vertical Position side Use the keypad to set vertical position to 3 divisions The baseline level will move down three divisions Press the side menu button Offset Use the keypad to set vertical offset to 3 volts The baseline level will move off screen Set the standard output of the DC calibration generator to 3 volts The DC test level will appear on screen Press SET LEVEL TO 50 Press TRIGGER MENU Check that the Threshold readout in the main menu is between 2 54 V and 3 46 V See Figure 4 17 TLS 216 Service Manual Performance Tests Tek Run 100kS s Sample Holdoff 0 Mode amp Holdoff Normal First set vertical offset to maximum and vertical position to 3 divisions Note the ground reference indicator is bounded on screen baseline is off screen Holdoff g Second set input equal t
165. l the test hookup and preset the instrument controls a Press save recall SETUP gt Recall Factory Setup main gt OK Confirm Factory Init side b Setthe horizontal SCALE to 50 ns c Press MEASURE High Low Setup main gt Min Max side d Connect through its leveling head an SMA to BNC adapter and a coaxial adapter the sine wave output of a high frequency leveled sine wave generator to channel 1 Set the output of the generator to a reference frequency of 6 MHz See Figure 4 9 4 31 Performance Tests High Frequency Sine Wave Generator Output 00000 00000 00000 Ll DO Adapt Coaxial Adapter SMA to BNC Adapter Leveling Head Figure 4 9 Test Hookup for Analog Bandwidth Test 2 Confirm the input channels are within limits for analog bandwidth Do the following substeps test channel 1 first then proceed on to the other channels a b 4 32 Set the vertical SCALE to 200 mV Press TRIGGER MENU Source main gt Channel side Use the keypad to specify the selected channel as the trigger source Press MEASURE Select Measrmnt for Ch x main Press the side menu button more until the menu label Pk Pk appears in the side menu its icon is shown at the left Press the side menu button Pk Pk Repeatedly press the side menu button more until Frequency appears in the side menu its icon is shown a
166. lamberts Tektronix PG 506A1 Calibra tion Generator Data Precision 8200 Tektronix 56 5031 or 565030 Leveled Sine Wave Generator Tektronix SG 504 Leveled Sine Wave Generator with its leveling head or a Tektronix SG 50301 Programmable Leveled Sine Wave Genera tor with its leveling head Tektronix 16 Photometer with J 6503 Luminance Probe Probe Adjustment S oftware based Adjustments S oftware based Adjustments S oftware based Adjustments Brightness and Focus Adjust ment Contrast Adjustment 14 Fixture Cal Adapter Zero Loss P6240 to BNC Tektronix part number 067 0232 xx Software based Adjustments 1 Requires a TM 500 or TM5000 Series Power Module Mainframe TLS 216 Service Manual Adjustment Procedures Adjustment Instructions 5 6 Hardware Installation Software Installation The following instructions will guide you through installing the software on your system setting up the logic scope for adjustment and starting the adjustment of the logic scope by the software 1 Install the proper GPIB card see System on page 5 2 Use the manual accompanying your GPIB card to install and configure that card 2 Configure the GPIB card a This software is designed to be compatible with cards configured for PCII and PCIIA operation The following table lists the default card settings b Ifthese settings conflict with your hardware setup see your GPIB card manual for altern
167. le release depressed pull the handle out of the slot in the handle cap Repeat procedure to remove the handle from the other handle cap see Figure 6 10 c Reverse procedure to reinstall TLS 216 Service Manual Removal and Installation Procedures TLS 216 Service Manual 4 Remove the handle caps a Insert the retaining ring pliers Item 8 into the opening created in the handle cap when you removed the handle While using the pliers to expand the handle cap outward grasp it and snap it off Repeat procedure to remove the remaining cap as needed push the cap s back on to reinstall 5 Remove the flip stand Grasp the flip stand by both sides near where it joins each flip stand foot Now compress the flip stand until the flip stand ends clear the flip stand feet to complete the removal see Figure 6 10 6 Remove the flip stand foot or feet a Do Rear Cover and Cabinet procedure page 6 19 to gain access to the inside of the cabinet Working from inside the cabinet push the two retainers to release the flip stand foot you wish to remove and lift it away from the outside of the cabinet see Figure 6 10 Repeat procedure to remove as many of the remaining feet as needed insert the two retainers back in their slots in the cabinet and snap into place any flip stand foot removed Reinstallation If any flip stand feet were removed reinstall as directed in step 6c then see Rear Cover and Cabinet proce
168. listed in Table 4 3 Set the time base accordingly Repeat substeps d through g until you have checked all the time base settings listed in Table 4 3 Set the generator output frequency back to 84 7 MHz set the horizontal SCALE to 10 ns Press the main menu button Class Press it again to select pulse width triggering Press the side menu button Upper Limit Use the numeric keypad to enter the upper limit dictated by the current time base setting See Table 4 3 Slowly decrease the output frequency until the signal becomes untrig gered the TRIG D LED turns off Check that the C1 Freq readout is greater than the Low Frequency Limit listed in Table 4 3 Set the generator output frequency to the next Initial Generator Setting listed in Table 4 3 Set the time base accordingly Repeat substeps k through n until you have checked all the time base settings listed in Table 4 3 Press the side menu button Upper Limit use the numeric keypad to set the upper limit to 3 us Press Class Glitch pop up gt Width side use the numeric keypad to set the width to 3 us Confirm the trigger system is within time accuracy limits for delayed nonsequence logic triggering a b Set the output of the sine wave generator to 84 7 MHz Press HORIZONTAL MENU gt Time Base main gt Delayed Only side press the side menu button Delayed Triggerable Set the horizontal SCALE of the delayed time base to 10 ns
169. litude is 1 000 V Readout may fluctuate around 1 000 V Disconnect the precision 50 2 coaxial cable from the SMA to BNC adapter and reconnect it through a 10X attenuator Press TRIGGER MENU Slope main Press SET LEVEL TO 50 Check that the instrument obtains a stable trigger for the test waveform on both the positive and negative slopes See Figure 4 19 Use the side menu to switch between trigger slopes use the THRESHOLD knob to stabilize the trigger if required Disconnect the test hookup remove the 10X attenuator and reconnect it to the next channel in numeric sequence Press GROUP MENU Group Definition main gt First Channel side Press the side menu button First Channel again if necessary to increment the first and selected channel Press TRIGGER MENU Source main gt Channel side Use the numeric keypad to enter the next channel in sequence Repeat substeps b through for all sixteen channels Substeps j through 1 will be unnecessary for channel 16 Leave the Main trigger system triggered on the positive slope of the waveform before continuing to the next step 4 47 Performance Tests First set a signal with an amplitude atthe minimum trigger sensitivity Second check for a stable trigger at both the positive and negative slope settings Type Edge CRT Dr ju Rae on chi 25 0 5 Edge 1 Edge Slope p
170. logic scope a Align the front subpanel to the main chassis taking care to ensure that the main chassis slips into its alignment slot on the front subpanel see magnified view Figure 6 24 Then reinstall the six screws removed in step 4 Reverse steps 3a and 3b to reinstall the input cable assembly See the procedure A30 Display Assembly and Supply Fuse page 6 48 to reinstall the display frame assembly and display tube TLS 216 Service Manual Removal and Installation Procedures Figure 6 24 Front Subpanel Removal TLS 216 Service Manual See the following procedures in the order listed for instructions for reinstalling the remaining modules 12 Front Panel Assembly and A13 Firmface Board Top Cover and Board Brackets page 6 39 All Processor Display Board page 6 37 A14 DI Bus and Analog Power and Digital Power Cables page 6 33 Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 Rear Cover and Cabinet page 6 19 4 4 e 6 53 Removal and Installation Procedures Disassembly for Cleaning 6 54 Main Chassis Additional Modules Removed 1 2 Remove the main chassis Since the removal of the main chassis requires the removal of virtually all modules do the procedure Disassembly for Cleaning that follows While doing Disassembly for Cleaning you will remove the front panel assembly Ignore the instructions to disassemble that assem
171. lug each of the 16 interconnect cables that connect to each of the 16 channel inputs from its jack on the Acquisition board See Figure 6 11 b Now remove the five screws you exposed when you removed the input panel removed during the access procedure c Complete the removal by lifting the Input Cable Assembly out of the front subpanel Reverse the procedure to reinstall Be careful to plug each cable into its correct jack Figure 6 11 shows the correct orientation 6 29 Removal and Installation Procedures Group 4 13 14 16 15 22 S Fan Group 3 Group 2 9 10 5 6 Channel Numbers TT 4 Group 1 Group 2 Group 9 14 Front 1 3 Group 4 Figure 6 11 Input Cable Assembly Routing 4 Reinstallation Do the following substeps to reinstall the input cable assembly a 6 30 If replacing the input cable assembly with a new unit from the factory cut the three cable ties as shown in Figure 6 12 Do not cut any of the cable ties that gather the cables into bundles Do in reverse order substeps 3a 3c reversing the removal instructions in each substep to reinstall the
172. menu are labeled with subfunctions of Edge Pushing the button that popped up the menu 17 toggles through the pop up menu choices Example Repeatedly push Type to toggle through the pop up menu Notice the other main menu button labels change accordingly Complete the setting of the desired mode by selecting from the main menu and the side menu that results Example Push Mode amp Holdoff 16 and then push Normal 15 General Operating Instructions Tek Run 100kS s Sample Holdoff 0 Mode amp Holdoff Auto Holdoff 15 Pattern j i M 500 Edge State 1 Sequence Source Slope Threshold Type amp Edge 1 tamy Holdoff ESSERE NN CO CO To adjust a function setting appearing in a side menu field do the following steps The examples of possible menu selections in the substeps that follow assume you ve pushed TRIGGER MENU and set Type to Edge 1 Push a main menu button that displays a side menu with a menu item s that contains a field readout that can be varied Example Push Threshold 21 2 Push the side menu button labeled with the menu item containing the field to select it for setting Example Push Threshold 19 3 Use the general purpose knob 20 to adjust the field to the trigger level to the setting desired E
173. move the 6 screws securing the rear chassis to the main chassis and the two screws securing it to the low voltage power supply shield Lift the rear chassis up slightly to access the cables connected to it Disconnect those cables from AUX TRIGGER INPUT at J600 MAIN TRIGGER OUT at J300 DELAYED TRIGGER OUT at J301 all found on the acquisition board Reinstallation Do in reverse order substeps 3a 3c reversing each step to reinstall the rear chassis Then see the following procedures in the order listed to complete reassembly of the logic scope Wm A74 DI Bus and Analog Power and Digital Power Cables page 6 33 W Rear Cover and Cabinet page 6 19 6 45 Removal and Installation Procedures DELAY TRIGGER to J 301 MAIN TRIGGER to J 300 AUXILIARY TRIGGER to J 600 EMI GASKET Figure 6 20 Rear Chassis Removal Procedures for Inner Chassis Modules You should have completed the Access Procedure page 6 14 before doing any of the procedures for the Inner Chassis modules The procedures are presented in the following order A 6 Low Voltage Power Supply m A30 Display Assembly and Supply Fuse m Front Subpanel m Main Chassis 6 46 TLS 216 Service Manual Removal and Installation Procedures A16 Low Voltage Power Supply 1 Assemble equipment and locate modules to be removed Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 Locate the modules to be rem
174. moves all modules for cleaning Instructions for cleaning are found in Inspection and Cleaning which begins this section NOTE Read the cleaning procedure before disassembling the logic scope for cleaning TLS 216 Service Manual Removal and Installation Procedures Equipment Required TLS 216 Service Manual Most modules in this logic scope can be removed with a screwdriver handle mounted with a size 1 15 Torx 9 screwdriver tip Use this tool whenever a procedure step instructs you to remove or install a screw unless a different size screwdriver is specified in that step All equipment required to remove and reinstall each module is listed in the first step of its procedure Table 6 4 Tools Required for Module Removal Item Name Description Tektronix No Part Number 1 Screwdriver handle Accepts Torx driver bits 003 0301 00 2 T 15 Torx tip Torx driver bitforT 15 size screw 003 0966 00 heads 3 T 20 Torx tip Torx driver bit for T 20 size screw 003 0866 00 heads 4 T 20 Torx tip Special Tool Narrow Torx driver 003 1457 01 bitfor T 20 size screw heads Fan removal only 5 Flat bladed Standard tool screwdriver for screwdriver removing standard headed screws 6 Needle Nose P liers Standard too 7 Nutdriver inch Standard too 8 Retaining Ring Pliers Standard tool 1 1 8 inch minimum throw 9 Angle Tip Tweezers Standard too 10 Pliers Standard too 6 11 Removal and Installa
175. n Code Mfr Part No 10 2 1 212 0189 00 4 SCREW MACHINE 8 32 X 0 500 PAN HEAD TORX 0 01 ORDER BY DESC 2 119 5044 00 1 FAN DC TUBE AXIAL 20 28V 0 275A 5W 5Y921 J Q24F 4V 031349 3 671 2413 00 1 CIRCUIT BD ASSY COLOR PROCESSOR DISPLAY 80009 671241300 A11 4 441 1902 01 1 CHASSIS SCOPE REAR 0J 9 9 ORDER BY DESC 5 334 8617 00 1 MARKER IDENT REAR BNC VGA CONN IDENT 07416 334 8617 00 6 131 1315 01 3 CONN RF J ACKCBNC PNL 50 OHM FEMALE STR PELTOLA 24931 28 R306 1 7 407 3825 00 2 BRACKET CKT BD PLASTIC REAR TK1163 ORDER BY DESC 8 386 6182 00 1 PLATE REAR ALUMINUM RS232 CENTRONIC 0J 9 9 386 6182 00 9 211 0730 00 2 SCREW ASSEM WSHR 6 32 X 0 375 PNH STL CD PL 0 01 ORDER BY DESC 10 131 0890 01 4 CONN HARDWARE DSUB J ACK SCREW 4 40 X 0 3121 00779 205818 2 11 348 1300 00 2 SHLD GSKT ELEK 3 165 L CLIP ON 30817 0098 0564 09 03 12 671 2431 00 1 CIRCUIT BD ASSY RS232 CENTRONIC 80009 671243700 23 SerPar 13 671 2846 00 1 CIRCUIT BD ASSY D1BUS 80009 671284600 A14 14 174 3146 00 1 CA ASSY SP COAXIAL RFD KIT 16 75 OHM RG197 12 0L 80009 174314600 15 259 0100 00 1 FLEX CIRCUIT PROBE 80009 259010000 16 672 2552 02 1 CIRCUIT BD ASSY ACQUISITION TESTED 80009 672255202 10 17 407 3878 00 6 BRACKET CKT BD PLASTIC TK1163 ORDER BY DESC 18 407 3877 00 2 BRACKET CKT BD PLASTIC TK1163 ORDER BY DESC 19 441 1901 01 1 CHASSIS SCOPE TOP 0J 9 9 ORDER BY DESC 10 6 TLS 216 Service Manual Replaceable Parts List
176. n also increment the first last and selected channels by repeatedly pressing their menu button in the side menu after selection To delete a group do the following steps 1 Press the group selection button GROUP 1 through GROUP 8 to select the group you want to delete 2 Press Group Definition main gt Delete Group side The logic scope takes the following actions m Removes the group and its vertical readout from the display m Removes any automated measurements on channels in the group 2 21 Operating Instructions for Waveform Groups m Releases all channels in the group so that they are available for including in existing groups or new groups you create NOTE Channels selected as trigger sources in the trigger menus continue to be the trigger source regardless of whether it belongs to a group that is displayed turned off or deleted belongs to no group at all How to Choose the Group Display Mode The logic scope displays the waveform groups you define in your choice of three display modes Analog BusForm and Timing Diagram Analog displays each waveform in the group as the analog of its input signal waveforms in the group have superimposed ground references See Figure 2 5 The logic scope scales Analog groups vertically on screen when you use the Vertical SCALE knob Also the group reference indicator for the group left side of screen points to the ground reference level for the group in
177. nder Procedures for External Modules Do in the order listed the three procedures 414 D1 Bus and Analog Power and Digital Power Cables A11 Processor Display Board and Top Cover found under Procedures for Outer Chassis Modules page 6 29 d Find and do the procedure whose title matches the name of the module to be removed under Procedures for Inner Chassis Modules page 6 46 6 Reinstall all modules removed Read the instructions found at the end of the procedure that removes the module to be serviced they will guide you in reinstalling all modules removed Procedures for External Modules Do the Access Procedure page 6 14 before doing any procedure in this collection The procedures found here listed in order presented follow Front Panel Knobs Wm Line Fuse Line Cord TLS 216 Service Manual 6 15 Removal and Installation Procedures 6 16 Front Panel Knobs EMI Gaskets Rear Cover and Cabinet Front Cover Trim Ring Menu Buttons and Input Panel 12 Front Panel Assembly Display Frame Cabinet Modules Assemble equipment and locate modules to be removed Have an angled tip tweezers Item 9 handy Find the knob s to be removed on the front panel Orient the logic scope Set the logic scope so its bottom is down on the work surface and its front is facing you Remove the knob s Grasp any knob you wish to remove and pull it straight out from the front panel slightly to create some cl
178. nnel 8 bits 50 mV Div to 2 V Div in a 1 2 5 sequence Range adjustable between the V Div step gain setting and the next lower step gain setting Resolution 1 ofthe lower step gain setting Range 15 V to 12 V Resolution 5 mV 5 divisions 0 1 divisions 20 MHz and FULL 500 MHz bandwidth TLS 216 Service Manual 1 13 Nominal Traits Table 1 14 Nominal Traits Time Base System Name Description Seconds Division Range 0 5 ns div to 5 s div Seconds Division Step Settings 0 5 ns Div to 5 s div in a 1 2 5 5 sequence Sample Rate Range Real Time 10 Samples s to 2 GS s on 16 channels simultaneously Sample R ate Range Interpolated 5 GSamples s to 100 GSamples s Record Length Selection 500 samples 1000 samples 2000 samples 1 The range of real time rates expressed samples second at which a digitizer samples signals at its inputs and stores the samples in memory to produce a record of time sequential samples Table 1 15 Nominal Traits Triggering System Name Description Trigger Threshold Range and Resolution Range 10 Divs Resolution 0 02 Divs Any Trigger Source Line Trigger Level 0 V Triggers at all 0 volt crossings regardless of whether positive going or negative going Table 1 16 Nominal Traits Display System Name Description Contrast Ratio gt 100 1 Waveform Display Graticule Single Graticule 401 x 501 pixels 8 x10 divisions where divisions are 1 cm by 1 cm W
179. nside dimension at least six inches greater than the logic scope dimensions If the logic scope is being shipped to a Tektronix Service Center enclose the following information the owner s address name and phone number of a contact person type and serial number of the logic scope reason for returning and a complete description of the service required Installation 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 2 6 TLS 216 Service Manual General Operating Instructions Screen Layout Basic Procedures How to Power On TLS 216 Service Manual This section describes how to turn on the TLS 216 Logic Scope and how to make basic operational settings from the front panel It also covers operation of the onboard Help and Status features Before doing service read these general operating instructions for servicing the logic scope They prepare you to follow the operating instructions contained in the service procedures of this manual such as the front panel setup instructions required to do the Performance Verification in Section 4 or the Adjustments in Section 5 NOTE These instructions are at the level appropriate for servicing the logic scope The complete operator instructions are found in the
180. nstrument modification number if applicable If a part you order has been replaced with a different or improved part your local Tektronix service center or representative will contact you concerning any change in the part number Change information if any is located at the rear of this manual The logic scope is serviced by module replacement There are three options you should consider m Module Exchange In some cases you may exchange your module for remanufactured 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 TEKWIDE ext 6630 m Module Repair You may ship your module to us for repair after which we will return it to you m New Modules You may purchase new replacement modules in the same way as other replacement parts 10 1 Replaceable Parts List Using the Replaceable Parts List 10 2 Item Names Indentation System Abbreviations The tabular information in the Replaceable Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find the all the information you need for ordering replacement parts In the Replaceable Parts List an Irem Name is separated from the description by a colon Because of space limitations an Irem Name may sometimes appear as incomplete For further Item Name identification U S Federal Cataloging H
181. o internal access is required remove the module Find and do the procedure whose title matches the name of the module to be removed under Procedures for External Modules page 6 15 6 14 TLS 216 Service Manual Removal and Installation Procedures 3 If the module is an outer or inner chassis module access the inside of the instrument a First do the procedure Line Fuse and Line Cord then do the procedure Rear Cover and Cabinet Both are found under Procedures for External Modules immediately following this procedure b After completing those procedures return to this procedure and continue with step 4 4 If the module is an outer chassis module remove it a Ifremoving the display frame assembly first do the procedure Front Cover Trim Ring Menu Buttons and Input Panel found under Procedures for External Modules page 6 15 b Find and do the procedure whose title matches the name of the module to be removed under Procedures for Outer Chassis Modules on page 6 29 5 If the module is an inner chassis module access the inner chassis a Ifremoving the display tube display driver board or the front subpanel first do the procedure Front Cover Trim Ring Menu Buttons and Input Panel found under Procedures for External Modules Also remove the display frame assembly found under Procedures for External Modules on page 6 15 b Also if removing the front subpanel do 72 Front Panel Assembly also found u
182. o the offset to return the DC level to the screen Type Third push SET LEVEL TO 50 lt dge gt and check the results in the main menu under Threshold CO CIC ICD gt OIOIOIOI O Source Ch Figure 4 17 Measurement of Trigger Level Accuracy BN g Press the main menu button Slope then press the side menu button for negative slope See icon at left h Press SET LEVEL TO 50 i Check that the Threshold readout in the main menu is between 2 54 V to 3 46 V 3 Disconnect the hookup a Setthe output of the DC calibration generator to volts b Disconnect the cable from the generator output at the input connector of channel 1 Sensitivity Edge Trigger Equipment Required One medium frequency leveled sine wave generator Item 9 one high frequency leveled sine wave generator Item 10 two precision 50 coaxial cables Item 4 one 10X attenuator Item 1 one BNC T connector Item 6 one 2X attenuator Item 2 one coaxial adapter Item 13 and one SMA to BNC adapter Item 14 Time Required Approximately 3 hours and 15 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 It must also pass the Signal Acquisition System Checks beginning on page 4 25 TLS 216 Service Manual 4 45 Performance Tests 4 46 Procedure 1 Install the test hookup and preset the instrument controls a Press save rec
183. 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 or c 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 THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESSED 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 POSSIB
184. ominal 522 ne RR oss ere epe ge gee os Installation oie artnet de eee Ts Supplying Operating Power Cord Information Operating Voltage Memory Backup Power Operating Environment Operating Temperature Ventilation Requirements Applying and Interrupting Power Power bend doe PER RES Power be uie lig dieu cotes Repackaging Instructions General Operating Instructions Screen Layout sic le tee Rx ea e S RO ERU BUE ERR BREL OUR RS Ee a REPRE ERU cer Ed ix xi xiii xiii xiv xiv xiv xiv xiv xvii xvii xviii xviii xviii xix 2 1 2 1 2 3 2 4 2 4 2 4 2 4 2 4 2 4 2 5 2 7 2 7 Table of Contents How to PowerON lala use ape ba prr ree 2 7 How to Use Help ue RU mee hg e eue m began 2 8 How to Display Logic Scope Status 2 9 How to Reset the Logic
185. ou require a power cord other than the one supplied refer to Table 2 2 Power Cord Identification Table 2 1 Power Cord Conductor Identification Conductor Alternate Color Ungrounded Line Black Grounded Neutral Light Blue White Grounded Earthing Green Yellow Green TLS 216 Service Manual Installation Table 2 2 Power Cord Identification Plug Configuration Normal Usage Option Number North America Standard 115V Europe 230V United Kingdom 230 V North America 230V S witzerland 230V Operating Voltage This logic scope operates with any line voltage from 90 250 with any line frequency from 47 63 Hz There are two fuses either of which may be used throughout the line voltage and frequency ranges The two fuses are not totally interchangeable as each requires a different fuse cap TLS 216 Service Manual 2 3 Installation Memory Backup Power Memory modules with on board batteries allow the logic scope to retain some types of data upon loss of the AC power source The stored adjustment constants saved front panel settings current front panel settings logic scope status and waveforms saved in memory are retained The on board batteries of the memory modules have a shelf life of about five years Partial or total loss of stored settings upon power on may indicate that the memory modules need to be replaced Operating Environment Operating Temperature V
186. ours 35 minutes If you ordered this product as an Option 1S you must obtain a complete set 16 of probes to do a complete performance verification Option 1S substitutes Coax Adapters for the probes normally shipped Alternately you may choose to adapt the procedures as follows 1 Perform the procedure Self Tests on page 4 5 skipping the test Verify Probe Function and Calibration on page 4 6 Introduction Operating Information Conventions 4 2 2 Skip all of the procedure Functional Tests except for the test Verify the File System on page 4 13 3 If you desire a more extensive confirmation of performance do the procedure Performance Tests When doing the Performance Tests you must also skip the test Check Outputs Probe Compensator on page 4 51 since that check requires a probe If you are not familiar with operating this logic scope read the TLS 216 Reference or the TLS 216 User Manual These manuals contain instructions that will acquaint you with the use of the front panel controls and the menu system Throughout these procedures the following conventions apply Each test procedure uses the following general format Title of Test Equipment Required Time Required Prerequisites Procedure Each procedure consists of as many steps and substeps as required to do the test Steps and substeps are sequenced as follows 1 First Step a First Substep b Second Substep 2 Second Step m Refer
187. oved in the locator diagram Inner Chassis Modules Figure 6 2 page 6 13 2 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its rear is facing you 3 Remove the low voltage power supply replaced in order to maintain the warranted characteristics for random vibration N CAUTION If any RTV Silicon is removed from the logic scope it must be a Working from the rear of the logic scope remove the two screws securing the low voltage power supply to the rear chassis See Fig ure 6 21 b Now working from the top of the logic scope remove the seven screws indicated in Figure 6 21 that mount the supply to the main chassis c Graspthe supply at the points indicated in the same figure and lift the board up out of the logic scope to complete removal 4 Reinstallation Do in reverse order substeps 3a through 3c reversing each step to reinstall the low voltage power supply Then see the following procedures to complete the reassembly m Top Cover and Board Brackets page 6 39 All Processor Display Board page 6 37 A74 DI Bus and Analog Power and Digital Power Cables page 6 33 W Rear Cover and Cabinet page 6 19 TLS 216 Service Manual 6 47 Removal and Installation Procedures Rotate the edge of the board upward as indicated to clear the lip of the main chassis when lifting this board out Figure 6 21 A16 Low Voltage
188. pment MIL HDBK 63038 1A Military Standard Technical Manual Writing Handbook TLS 216 Service Manual 9 1 Diagrams esL eee coe Se og eons 5 Ge ce Se oe Sel 5 Ge eos oe o9 an an oo 2 e o9 iam oS l 2 oS T 2 ACQUISITION sche SYSTEM POWER FLEX A10 ACQUISITION Figure 9 1 TLS 216 Block Diagram TIME INTERPOLATOR A10A1 TIME INTERPOLATOR MENU SWITCHES A12 FRONT PANEL FRONT PANEL SWITCHES FRONT PANEL LEDS FRONT PANE POTS 16 PINS L PROBE COMPENSATION FRONT PANEL 12 1 PROBE CALIBRATOR ON STBY LOW VOLTAGE POWER SUPPLY PF ANALOG POWER TO ALL CIRCUITS DIGITAL POWER TO ALL CIRCUITS Al7 MAIN LV POWER SUPPLY A18 MAIN CONVERTER CONTROL A19 POWER FACTOR CONTROL TLS 216 Service Manual Diagrams 2 AUX TRIGGER 29 INPUT 2 2 26 A23 E 26 SERPAR BOARD 2 FAN 100 26 PROCESSOR SYSTEM 25 ie ON STBY FSYNC NIDEO A30 DRIVER DISP LAY ee BOARD SYSTEM HSYNC DRAM PROCESSOR DISPLAY BOARD Figure 9 1 TLS 216 Block Diagram Cont TLS 216 Service Manual REAR PANEL MAIN TRIGGER OUTPUT DELAYED TRIGGER OUTPUT GPIB IEEE STD 488 PORT EVGA SHUTTER DRIVER BOARD Diagrams P2 26 PINS
189. preface as it describes the strategy module replacement used to service this product This manual is divided into sections such as Specifications and Theory of Operation Further it is divided into subsections such as Product Description and Removal and Installation Procedures The following is a brief description of each manual section Specifications contains a product description of the logic scope and tables of the characteristics and descriptions that apply to it Operating Information includes installation and operating instructions at the level needed to safely power on and service this logic scope Instruc tions for shipment of the logic scope are also found in this section Theory of Operation contains circuit descriptions that support general service and fault isolation Performance Verification contains a collection of procedures for confirming that this logic scope functions properly and meets warranted limits Adjustment Procedures contains a collection of procedures for adjusting this Logic Scope to meet warranted limits Maintenance contains information and procedures for doing preventive and corrective maintenance of this logic scope Instructions for cleaning for module removal and installation and for fault isolation to a module are found here Options contains information on servicing any of the factory installed options that may be present in your logic scope Electrical Part
190. press CLEAR MENU to TLS 216 Service Manual Installation Power Off A continue See Section 6 Maintenance for information on diagnostics and fault isolation CAUTION DO NOT power off the logic scope when either running a signal path compensation or when doing any of the adjustments described in Section 5 Adjustment Procedures To do so might result in the loss of internally stored adjustment constants In general do not power off the logic scope when doing operations that affect the data types listed in Table 2 3 Wait for the logic scope to finish the operation when doing adjustments saving waveforms or saving setups Improper power off or unexpected loss of power to the logic scope can result in the following corruptions of non volatile RAM NVRAM The following table describes the messages displayed when power is restored after an abnormal power off Table 2 3 Effects of Corrupted Data Corrupted Data Type Results Adjustment Constants Signal Path Compensation A signal path compensation is required Voltage Reference A voltage reference adjustment is required Section 5 Frequency Response A frequency response adjustment is required Section 5 Error Log Errors logged are lost Reference Waveforms Waveform Lost Saved Setups Setup Lost Repackaging Instructions TLS 216 Service Manual Use a corrugated cardboard shipping carton having a test strength of at least 275 pounds and with an i
191. provided the power switch To avoid electric shock or injury use extreme caution when handling the CRT Only qualified personnel familiar with CRT servicing procedures and precautions should remove or install the CRT CRTs retain hazardous voltages for long periods of time after power is turned off Before attempting any servicing discharge the CRT by shorting the anode to chassis ground When discharging the CRT connect the discharge path to ground and then the anode Rough handling may cause the CRT to implode Do not nick or scratch the glass or subject it to undue pressure when removing or installing it When handling the CRT wear safety goggles and heavy gloves for protection Dangerous voltages or currents may exist in this product Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed connections To avoid x radiation exposure do not modify or otherwise alter the high voltage circuitry or the CRT enclosure X ray emissions generated within this product have been sufficiently shielded xi Service Safety Summary Xii TLS 216 Service Manual Preface Manual Structure TLS 216 Service Manual This is the Service Manual for the TLS 216 Logic Scope Before using this manual to service the logic scope please read all topics in this preface Also read the introduction that follows this
192. rator Leveled Sine Wave 250 MHz to 500 MHz Variable Tektronix SG 504 Leveled Checking Analog Band High F requency amplitude from 500 mV to 4 V into Sine Wave Generator with width and Trigger Sensitiv 50 6 MHz reference a TM 500 Series Power ity at high frequencies Module with SG 504 Out put Head ll Generator Time Mark Variable marker frequency from 10 Tektronix TG 501A Time Checking S ample R ate ms to 10 ns accuracy within 2 ppm Mark Generator and Delay time Accuracy 12 P6240 Probes which are a P6240 probes Tektronix part number Signal Interconnection Standard Accessory to this P6240 product 13 Adapter Coaxial Logic Scope channel inputto female Tektronix part number Signal Interconnection two required SMA adapter 013 0282 00 14 Adapter SMA to BNC Male SMA to female BNC Tektronix part number Signal Interconnection two required 015 0554 00 1 If your logic scope was ordered configured as Option 1S it was shipped without the 16 probes included with the standard configured logic scope Read the information under Option 1S on page 4 1 before continuing Test Record Photocopy the next 7 pages and use them to record the performance test results for your instrument 4 16 TLS 216 Service Manual Performance Tests TLS 216 Test Record Instrument Serial Number Temperature Date of Calibration Certificate Number RH 96 Technician Performan
193. requency 2 GS s Sample Rate 98 MHz 5 5 bits 245 MHz 5 0 bits 490 MHz 4 5 bits Input Current x 60 pA atan ambient temperature 30 C Step Response Rise Time V Div Setting Rise Time 50 mV Div to 99 9 mV Div 1 0ns 100 mV Div to 199 mV Div 900 ps 200 mV Div to 2 V Div 800 ps Step Response Settling Time with Coaxial Adapter V Div Step Settling Error at Setting Response 20ns 100ns 20ms 50mV Divto lt 5 0V lt 0 5 lt 0 2 lt 0 1 99 9 mV Div 100 mV Divto lt 5 0V lt 1 0 lt 0 5 lt 0 2 199 mV Div 200 mV Divto lt 5 0V lt 1 0 lt 0 5 lt 0 2 2 V Div TLS 216 Service Manual 1 9 Typical Characteristics Table 1 9 Typical Characteristics Triggering System Name Trigger Position Accuracy All Types Edge Type Trigger J itter Pulse Pattern State or Sequence Type Trigger Sensitivity Pulse Pattern or Sequence Type Trigger Time Range and Resolution Trigger Holdoff Range Set Trigger Level to 50 Minimum Operable Frequency Delayed Trigger Time Range Delayed Trigger Events Range Auxiliary Trigger Input Logic Levels Auxiliary Trigger Input Characteristics Description Acquisition Mode Sample or Average Accuracy 1 WI 4 1 5 ns 2 WI 1 5 ns 0 5 ns peak to peak for 100 records Envelope 1 0 Div from DC to 200 MHz with a minimum slew rate of 25 Divs us at the trigger level threshold Range 2 4 ns to 1 s Time Range Time Resolution 2 4 ns to 10 ns 0 2 ns 10 5 ns to 20
194. ront panel button press Recall Factory Setup in the main menu and then press OK Confirm Factory Init in the side menu The following functions can be set using the front panel knobs without accessing menus vertical scale and position horizontal scale and position trigger level Edge and Pulse type trigger only and run stop waveform acquisition To adjust these functions reset the logic scope as described above and then do the following steps 1 Input the waveform source s to the input channels 7 Numbers in parentheses call out front panel controls in the illustrations accompanying these instructions The channels must be defined to be part of a logic scope waveform group see How to Create a Waveform Group on page 2 20 1 SAVE RECALL gt APPLICATION MENU AUTOSET WAVEFORM MEASURE HARDCOPY STATUS UTILITY HELP crous a VERTICAL HORIZONTAL ASH TRIGGER croup 1 POSITION 4 Cy o THRESHOLD NA ITRIG DJ GROUP 6 READY GROUP 2 TRIG HORIZONTAL fRIGGER GROUP 7 EN croup _3 ar SCALE gt SET LEVEL GROUP 8 ES GROUP SINGLE TRIG FORCE TRIG MORE GROUP OFF 2205 1 2 GROU BOTTOM REF ALL 16 CHANNELS 3s 000 0000 00 L 5 i General Operating Instructions How to Set Functions from Menus
195. rther disassembly of front panel assembly 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 b Locate the modules to be removed in the locator diagram External Modules Figure 6 1 c Do the procedure Front Cover Trim Ring Menu Buttons and Input Panel steps 1 5 immediately preceding this procedure 2 Orient the logic scope Set the logic scope so its bottom is down on the work surface and its front is facing you 3 Remove the front panel assembly a Liftthe front panel assembly out of the front subpanel until you can reach the interconnect cable connecting it to the processor display board b Disconnect that cable at J2 of the processor display board Disconnect the flex board connector at P3 of the front panel assembly The flex board is part of the display frame assembly c Finally lift the front panel assembly out of the front subpanel to complete the removal 6 23 Removal and Installation Procedures 6 24 Front P anel Assembly ToJ2 of All DRAM Processor DisplayBoard Figure 6 8 A12 Front Panel Assembly Removal 4 Remove the probe calibrator If the probe calibrator is to be serviced remove the two nuts securing it to the front panel assembly See Figure 6 9 5 Further disassembly of front panel assembly If the front panel or the front panel buttons are to be serviced do the following
196. rts Logic Conventions describes how logic functions are discussed and represented in this manual m Module Overview describes circuit operation from a functional circuit block perspective The TLS 216 Logic Scope contains many digital logic circuits This manual refers to these circuits with standard logic symbols and terms Unless otherwise stated all logic functions are described using the positive logic convention the more positive of the two logic levels is the high 1 state and the more negative level is the low 0 state Signal states may also be described as true meaning their active state or false meaning their non active state The specific voltages that constitute a high or low state vary among the electronic devices Active low signals are indicated by a tilde prefixed to the signal name RE SET Signal names are considered to be either active high active low or to have both active high and active low states This module overview describes the basic operation of each functional circuit block as shown in Figure 9 2 The Tektronix TLS 216 Logic Scope is a 16 channel instrument Each channel provides a calibrated vertical scale factor of the 16 channels can be simultaneously acquired at the maximum digitizing rate of 2 GSamples sec A signal enters the logic scope through a probe attached to a logic scope input connector on the A10 Acquisition board Acquisition System The acquisition system provides 50
197. rts m complete measurement and documentation capability intuitive operation using graphic icons and the more familiar and traditional horizontal and vertical knobs O on line help at the touch of a button f 0000000 TLS 216 Service Manual 1 1 Product Description 1 2 TLS 216 Service Manual M Qo Warranted Characteristics This subsection lists the various warranted characteristics that describe the TLS 216 including both electrical and environmental characteristics Warranted characteristics are quantifiable performance limits that are warranted NOTE In these tables those warranted characteristics that are checked either directly or indirectly in the Performance Verification found in Section 1 appear in boldface type under the column Name Performance Conditions The electrical characteristics found in these tables of warranted characteristics apply when the TLS 216 has been adjusted at an ambient temperature between 20 C and 430 C has had a warm up period of at least 20 minutes and is operating at an ambient temperature between 4 and 50 C unless otherwise noted and has passed both the signal path compensation and probe calibration routines Table 1 1 Warranted Characteristics Input System Name Description Input Resistance with Coaxial Adapter 50 1 Input Resistance with P6240 Probe 1 15 at DC Input Dynam
198. s List contains a statement referring you to Replaceable Parts where both electrical and mechanical modules are listed See below Diagrams contains a block diagram and an interconnection diagram useful for isolating failed modules xiii Preface Conventions xiv Modules Safety Symbols c Operating Instructions m Mechanical Parts List includes a table of all replaceable modules their descriptions and their Tektronix part numbers This manual uses certain conventions which you should become familiar with before doing service This manual refers to any replaceable component assembly or part of this logic scope generically as a module In general a module is an assembly like a circuit board rather than a component like a resistor or an integrated circuit Some times a single component is a module for example each chassis part of the logic scope is a module Symbols and terms related to safety appear in the Safety Summary found at the beginning of this manual Besides the symbols related to safety this manual uses the following symbols STOP The STOP label appears with information that must be read in order to correctly do service and to avoid incorrectly using or applying service proce dures The clock icon labels procedure steps which require a pause to wait for the logic scope to complete some operation before you can continue Various icons such as the example icon at the left ar
199. s you remove it STOP DO NOT do steps 6 through 8 to remove the EMI gasket s unless they must be replaced due to damage If you are not replacing those gaskets skip to step 9 When reinstalling EMI gaskets and or the logic scope cabinet carefully follow the instructions given Unless they are performed properly the logic scope may not meet its emissions requirements EMI 6 Assemble equipment and locate modules to be removed a Have handy a pair of needle nose pliers Item 6 b Locate the modules to be removed in the locator diagram External Modules Figure 6 1 7 Remove the EMI gaskets a Look for the point where the ends of the gasket touch in the channel at the rear edge of the cabinet TLS 216 Service Manual 6 19 Removal and Installation Procedures 6 20 Use a pair of needle nose pliers to pry up one of the ends Grasp the EMI gasket and gently pull it out of the its channel Repeat substeps a through c to remove the gasket from its channel on the front casting 8 Reinstallation of EMI gaskets Press each EMI gasket back into its groove at the rear edge of the cabinet or front casting Make sure the ends of the gasket touch but do not overlap when installing Cut off excess length if required to prevent overlap 9 Reinstallation of cabinet and rear cover a b Do in reverse order steps 3 and 4 to reinstall the cabinet Take care not to bind or snag the cabinet on internal cabling
200. scope If you are disassembling this logic scope for cleaning go to the procedure Disassembly for Cleaning page 6 54 If you are removing a module for service begin by doing the procedure Access Procedure page 6 14 By following the instructions in that procedure you remove the module to be serviced while removing the minimum number of additional modules The procedures are described in the order in which they appear in this section In addition you can look up any procedure for removal and reinstallation of any module in the Table of Contents of this manual m The Access Procedure on page 6 14 first directs you to the procedure s if any that are required to access the module to be serviced and then it directs you to the procedure to remove that module m Procedures for External Modules beginning on page 6 15 are procedures for removing modules the removal of which do not require internal access to the logic scope m Procedures for Outer Chassis Modules beginning on page 6 29 are procedures for removing modules the removal of which require access internal to the instrument but external to the chassis W Procedures for Inner Chassis Modules beginning on page 6 46 are procedures for removing modules the removal of which require access internal to the logic scope and internal to the chassis m Disassembly for Cleaning beginning on page 6 54 is a procedure based on the removal procedures just described that re
201. screen Note that there is noise present on the peaks of the square wave m Envelope mode displays an actively acquiring waveform on screen with the noise displayed m Average mode displays an actively acquiring waveform on screen with the noise reduced Now return the instrument to Sample mode Install the second probe mentioned in step 1a on the next channel in numeric sequence Leave the first probe installed on channel 1 Press GROUP MENU Group Definition main gt Selected Channel side Press the side menu button Selected Channel again if necessary to increment the selected channel to the next channel to be tested Press SET LEVEL TO 50 as necessary to trigger the signal Repeat substeps a through d until you have verified all sixteen input channels 3 Remove the test hookup Disconnect the probes from the channel inputs and the probe calibration terminals Equipment Required One P6240 probe Time Required Approximately 5 minutes Prerequisites None Procedure 1 Install the test hookup and preset the logic scope controls a Install the probe on channel 1 Connect the probe tip to the PROBE CALIBRATION signal on the front panel See Figure 4 3 on page 4 8 Press save recall SETUP gt Recall Factory Setup main gt Ok Confirm Factory Init side Press SET LEVEL TO 50 Set the vertical SCALE to 500 mV TLS 216 Service Manual Brief Procedures Verify the Main and Delayed Trigg
202. son m Read the Safety Summary and Preface found at the beginning of this manual m Read Strategy for Servicing below and Installation in Section 2 When using this manual for servicing be sure to heed all warnings cautions and notes When performing any procedure be sure to read any introduction it may provide These introductions provide information needed to do the service safely correctly and efficiently NOTE Throughout this manual any field replaceable component assembly or part of this logic scope is referred to generically as a module This manual contains all the information needed for periodic maintenance of the logic scope Examples of such information are procedures for checking performance and for readjustment Further it contains all information for corrective maintenance down to the module level This means that the proce dures diagrams and other troubleshooting aids help isolate failures to a specific module rather than to components of that module Once a failure is isolated replace the module with a fresh unit obtained from the factory modules are listed in Section 10 Mechanical Parts List To isolate a failure to a module use the fault isolation procedures found in Section 6 Maintenance Information To remove and replace any failed module follow the instructions in Removal and Installation Procedures also found in Section 6 xvii Introduction Tektronix Service Warranty Repair
203. ssor Display module 2 Note Set all the switches on S 1001 back to the closed position and cycle power before Note The replacement module may not have performing another procedure the correct firmware loaded See page 6 58 for details on firmware updates Figure 6 26 Primary Troubleshooting Procedure Cont TLS 216 Service Manual 6 61 Troubleshooting This procedure assumes that the logic scope is up and running and you can read the display Power off and remove the cov er using the Rear Cover and Selectthe extended diagnostics menu and Babinervemovaliorecedure run all the test suites Diagnostics on page Check all the cables coming 6 57 explains how to do this na dan A Er Note Diagnostic switch number 3 on S1001 reported DP y 9 mustbe closed before beginning this proce tween modules Be sure every i cable is attached securely dure See Diagnostics on page 6 57 The logic scope is o r Regardless of other failures did the P rocessor fail but the roc Interface and FP Proc Interface pass Yes Did the Could Processor Perform the Processor Acquisi pass but comething tion and P rocessor F ront Panel dur E a ay Replace the All DRAM troubleshooting procedures mogu Eusing mese Processor Display module else fail procedures Did the Front Panel and or FP Proc Interface tests fail
204. substeps a Remove the front panel control knobs from the front panel assembly using the method described in Front Panel Knobs on page 6 16 b Remove the eight screws mounting the front panel board to the front panel c Now hand disassemble the front panel assembly components using Figure 6 9 as a guide Reverse procedure to reassemble using the same Figure 6 9 as a guide TLS 216 Service Manual Removal and Installation Procedures CAUTE X DOO CMMI CAAA Figure 6 9 Disassembly of Front Panel Assembly TLS 216 Service Manual 6 Reinstallation a If the front panel assembly was further disassembled in step 5 then reverse substeps 5a 5c to reassemble using Figure 6 9 as a guide Ifthe probe calibrator was removed reinstall it using Figure 6 9 asa guide Be sure to align the calibrator cover flush to the front panel before installing the two nuts removed in step 4 Then do step 3 reversing the procedure outlined in each substep Last reinstall the trim ring and if desired the front cover referring to the procedure Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 6 25 Removal and Installation Procedures Display Frame Assembly 6 26 Cabinet Modules Assemble equipment and locate modules to be removed Have handy a screwdriver with a size T 15 Torx Items 1 and 2 Locate the modules to
205. t the left Press the side menu button Frequency Press CLEAR MENU Set the generator output so the C1 Pk Pk readout equals 1 2 V Press SET LEVEL TO 50 as necessary to trigger a stable display and ensure an accurate setting Set the frequency of the generator as shown on screen to approximately 500 MHz Set the horizontal SCALE to 1 ns If necessary adjust the generator until the output frequency is 500 MHz Press SHIFT then press ACQUIRE MENU gt Mode main gt Average 16 side TLS 216 Service Manual Performance Tests j Read the results at the C1 Pk Pk readout which will automatically measure the amplitude of the test signal See Figure 4 10 P S Tek Run 2 0065 s Average First increase the reference frequency to the test frequency then decrease the horizontal scale C1 860 MT fons Edge 27 ul 1993 10 45 48 Second read the results from the readout of measurement P k P k Figure 4 10 Measurement of Analog Bandwidth k Press the side menu button Sample Check that the Pk Pk readout on screen is 848 mV l Setthe horizontal SCALE back to the 50 ns m Press GROUP MENU Group Definition main gt First Channel side Press the side menu button First Channel again if necessary to increment to the next channel to be tested n S
206. tall the acquisition board Then see the following procedures in the order listed to complete reassembly of the logic scope Wm 4 DI Bus and Analog Power and Digital Power Cables page 6 33 m Input Cable Assembly page 6 29 W Front Cover Trim Ring Menu Buttons and Input Panel page 6 21 W Rear Cover and Cabinet page 6 19 TLS 216 Service Manual 6 41 Removal and Installation Procedures MAIN TRIGGER 9 OUTPUT AUX TRIGGER DELAYED TRIGGER INPUT OUTPUT o Figure 6 18 A10 Acquisition Board Removal Floppy Disk Drive 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size T 15 Torx tip Items 1 and 2 and a screwdriver with a small Phillips head b Locate the modules to be removed in the locator diagram Outer Chassis Modules Figure 6 2 page 6 13 2 Orient the logic scope Set the logic scope so its top is down on the work surface and its front is facing you 6 42 TLS 216 Service Manual Removal and Installation Procedures 3 Remove the Floppy Disk Use Figure 6 19 as a guide a Unplug the J38 disk cable connector ribbon interconnect cable that connects the disk drive to the A11 Processor Display board b Youcan either remove the disk drive by itself or the drive with its disk bracket To remove the drive and the disk bracket skip to step c To remove the drive by itself unscrew the 2 retainin
207. tedly press the side menu button more until Frequency appears in the side menu Press Frequency See Figure 4 22 First turn on the Pk Pk and Frequency measurements iv 1asuremer t Second read the measurement results here fa 1 1 200mv Remove nia B ochi Gating OFF ign OV Reference Setup IHistogram DF Levels Frequency dth M 50045 Edge Negative width Snapshot CO C C D Co C Co Figure 4 22 Measurement of Probe Compensator Limits d Check that the C1 Pk Pk readout is between 490 and 510 mV e Check that the C1 Freq readout is between 950 and 1050 Hz 3 Disconnect the probe from the channel 1 input 4 52 TLS 216 Service Manual Performance Tests Check Outputs Main Equipment Required One precision coaxial cable Item 4 one coaxial adapter and Delayed Trigger Item 13 one SMA to BNC adapter Item 14 Time Required Approximately 10 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 It must also pass the Signal Acquisition System Checks beginning on page 4 25 Procedure 1 Install the test hookup and preset the instrument controls a Connect the MAIN TRIGGER OUTPUT at the rear panel to channel 1 through a 50 precision cable
208. the display driver board Use Figure 6 23 as a guide CAUTION If any RTV Silicon is removed from the logic scope it must be replaced in order to maintain the warranted characteristics for random vibration a Remove the six screws that mount the display driver board to the main chassis b Now grasp the display driver board at the points indicated and move the board forward about an inch to clear the retainer built into the left side of the main chassis Once the retainer is cleared work from the front and top to tilt the board so its right edge is up and its left side is down and lift it out of the top of the logic scope s main chassis 6 50 TLS 216 Service Manual Removal and Installation Procedures Move circuit board dus forward to clear main chassis Figure 6 23 Display Driver Board Removal 6 Reinstallation a Do in reverse order substeps 5 5 reversing each step to reinstall Display Driver board b Do in reverse order substeps 4a 4d reversing each step to reinstall the display tube if removed c See step 3 to reinstall the supply fuse if it was removed d See the following procedures in order to complete reassembly of the logic scope Top Cover and Board Brackets top cover only on page 6 39 m All Processor Display Board page 6 37 TLS 216 Service Manual 6 51 Removal and Installation Procedures 6 52 Front Subpanel A74 DI Bus and
209. the line cord and the retaining clamp and rotate it 90 degrees counter clockwise Pull the line cord and clamp away to complete the removal Reverse procedure to reinstall Reinstallation Do in reverse steps 3 and 4 to reinstall the line cord and then the line fuse 1 Unplug 2 Rotate 3 Pull zt Y Figure 6 5 Line Fuse and Line Cord Removal 6 18 TLS 216 Service Manual Removal and Installation Procedures EMI Gaskets See Rear Cover and Cabinet procedure that follows Rear Cover and Cabinet 1 Assemble equipment and locate modules to be removed a Have handy a screwdriver with a size 1 20 Torx tip Items 1 and 4 b Make sure the logic scope s front cover is installed if it s not install it by snapping its edges over the trim ring Locate the rear cover and cabinet in the locator diagram External Modules Figure 6 1 2 Orient the logic scope Set the logic scope so its face is down with its front cover on the work surface and its bottom facing you 3 Disconnect the line cord Unplug the line cord from its receptacle at the rear COVer 4 Remove rear cover Remove the four screws securing the rear cover to the logic scope Lift off the rear cover 5 Remove the cabinet a Atthe rear of the cabinet grasp its left and right edges b Pull upward to slide the cabinet off the logic scope Take care not to bind or snag the cabinet on the logic scope s internal cabling a
210. the side menu button Time set the time to 1 us Press HOR IZONTAL MENU gt Time Base main gt Delayed Only side press the side menu button Delayed Triggerable Press SHIFT DELAYED TRIG Repeat substeps e through m for the delayed trigger 5 Disconnect the hookup Disconnect the cable from the generator output at the input connector of channel 1 TLS 216 Service Manual Performance Tests Check Accuracy Trigger Equipment Required One DC calibration generator Item 8 one BNC T Threshold connector Item 6 two precision coaxial cables Item 4 one coaxial adapter Item 13 one SMA to BNC adapter Item 14 and two dual banana connectors Item 5 Time Required Approximately 5 minutes Prerequisites The logic scope must meet the prerequisites listed on page 4 15 It must also pass the Signal Acquisition System Checks beginning on page 4 25 Procedure 1 Install the test hookup and preset the instrument controls a b DC Calibrator Sense Output Set the output of the DC calibration generator to O volts Connect the output of the DC calibration generator through a dual ba nana connector followed by a 50 2 precision coaxial cable to one side of a BNC T connector See Figure 4 16 Dual Banana to BNC Adapter Coaxial Adapter SMA to BNC Adapter BNC T Connector Figure 4 16 Test Hookup for Trigger Threshold Chec
211. tion Procedures Fuse Cap Line Fuse Line Cord EMI Gasket Handle Cap appe Foot EMI Gasket FootPad 7 Flip Stand Pd Display Frame PP Front Panel Knobs Menu Buttons InputPanel prope Flex Cover A12 FrontPanel Assembly Probe Calibrator Cover Trim Ring Front Cover Figure 6 1 External Modules 6 12 TLS 216 Service Manual Removal and Installation Procedures Disk Cable Fan All DRAM Processor Display lt Floppy Disk Drive Drive Shield Top Cover Board Bracket Rear Chassis Analog and Digital Power Cables Cable A10 Acquisition Board Down oe i Input Cable Assembly Probe Flex Circuit Figure 6 2 Outer Chassis Modules TLS 216 Service Manual 6 13 Removal and Installation Procedures A30 Display Assembly A16 Power Supply Main Chassis Figure 6 3 Inner Chassis Modules Access Procedure Begin with this procedure when you have identified a module to be removed for service and have read General Instructions found earlier in this section l Locate module to be removed a Find the module to be removed in the module locator diagrams Figures 6 1 through 6 3 b Once the module is found note from the title of the figure whether the module is an external outer chassis mounted or inner chassis mounted part 2 If the module is externally mounted n
212. tion or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESSED 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 P6240 WARRANTY 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 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
213. tors female BNC input male 011 0059 02 BNC output 2 Attenuator 2X TLS 216 Service Manual Ratio 2X impedance 50 connec Tektronix part number Signal Attenuation tors female BNC input male BNC 011 0069 02 output 4 15 Performance Tests Table 4 1 Test Equipment Cont Item Number and Description Minimum Requirements Example Purpose 3 Terminator 500 Impedance 50 connectors Tektronix part number Signal Termination for female BNC input male BNC output 011 0049 01 Channel Delay Test 4 Cable Precision 50 Q Coaxial 50 36 in male to male BNC Tektronix part number Signal Interconnection three required connectors 012 0482 00 5 Connector Dual Banana two Female BNC to dual banana Tektronix part number Various Accuracy Tests required 103 0090 00 6 Connector BNC T Male BNC to dual female BNC Tektronix part number Checking Trigger S ensitiv 103 0030 00 ity 7 Coupler Dual Input Female BNC to dual male BNC Tektronix part number Checking Delay Between 067 0525 02 Channels 8 Generator Calibration Variable amplitude to 104 V Data Precision 8200 Checking DC Offset Gain accuracy to 0 1 and Measurement Accura Cy 9 Generator Leveled Sine Wave 200 kHz to 250 MHz Variable Tektronix SG 503 Leveled Checking Trigger Sensitiv Medium F requency amplitude from 5 mV to 4 Vp p into Sine Wave Generator ity atlow frequencies 500 10 Gene
214. ures TLS 216 Service Manual g 10 Acquisition Board page 6 41 4 Remove the inner chassis modules Do in order the following procedures They are found under Procedures for Inner Chassis Modules which start on page 6 46 a 16 Low Voltage Power Supply page 6 47 b A30 Display Assembly and Supply Fuse page 6 48 5 Disassemble the chassis a Setthe assembly so its bottom is down on the work surface and its front is facing you b Remove the six screws securing the front subpanel to the main chassis See Figure 6 24 for screw location c Liftthe front subpanel up away from the main chassis d Now remove the six screws securing the rear chassis to the main chassis and separate the two chassis See Figure 6 20 for screw location 6 Reassembly Do the following substeps a Reassemble the chassis Align the rear chassis to the main chassis and reinstall the five screws removed in step 5d align the front subpanel to the main chassis and reinstall the six screws removed in step 5b NOTE The following substeps refer you to procedures for installing each module removed When reinstalling the modules ignore any instructions that require connecting a cable or bus to a module that you have not yet installed The necessary connections will be made when you install the missing module later b Reinstall the inner chassis modules Do in the order listed the following procedures When doing these procedures
215. xample Turn the knob to 2200 mV Alternately you could set the level using the keypad Example Enter 200 press SHIFT then press m to set the threshold to 200 mV 2 12 TLS 216 Service Manual General Operating Instructions 19 20 Tek Run 100kS s Sample UAI Trigger Threshold 200mV Threshold Threshold 20 Copy to Group Copy to T iT200mv E 56 Edge Habs 21 NE Family Source Slope 5 Edge a E C OIC DIC DIC DIC D TLS 216 Service Manual More About the General Purpose Knob The general purpose knob is used to control many logic scope functions such as cursor positioning display intensities delay time gated measurements number of events trigger position holdoff offset and variable persistence In all cases the menus are used to select the function to which the general purpose knob is assigned The following attributes apply to this knob m Depending on the function it is assigned to control the general purpose knob may vary numerical readouts position objects cursors on screen or select between icon label settings that show up in side menu labels m The general purpose knob has a readout area at the upper right corner of the screen See Figure 2 1 on page 2 8 This readout always
216. ype of cleaner consult your Tektronix Service Center or representative Inspect the outside of the logic scope for damage wear and missing parts using Table 6 2 as a guide Any logic scope that appears to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance Immediately repair defects that could cause personal injury or lead to further damage to the logic scope 6 5 Inspection and Cleaning Table 6 2 External Inspection Check List Item Cabinet front panel and cover Front panel knobs Connectors Inspect For Cracks scratches deformations damaged hardware or gaskets Missing damaged or loose knobs Broken shells cracked insulation and deformed contacts Dirt in connectors Repair Action Replace defective module Repair or replace missing or defective knobs Replace defective modules Clear or wash out dirt Carrying handle flip stand cabinet feet Correct operation Replace defective module Accessories Missing items or parts of items bent pins broken or frayed cables and damaged connectors Replace damaged or missing items frayed cables and defective modules Cleaning Procedure Exterior A Inspection Interior Clean the outside of the logic scope as needed using the following procedure CAUTION To prevent getting moisture inside the logic scope during external cleaning use only enou

Service Manual TLS 216 Logic Scope 070-8831-02

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