Tektronix TDS3000 Manual de usuario Pagina 1

Service ManualTDS3000 SeriesDigital Phosphor Oscilloscopes071-0382-01This document supports firmware version 2.00and above.WarningThe servicing instru

Table of ContentsviTDS3000 Series Service Manual

Maintenance6–24TDS3000 Series Service ManualNOTE. It is possible to remove the inverter board without removing the frontchassis or display module. If

MaintenanceTDS3000 Series Service Manual6–25Installation. Use this procedure to install the display module into the front chassisand install the front

Maintenance6–26TDS3000 Series Service Manual7. Insert the front chassis assembly into the oscilloscope. Insert the right end ofthe front chassis sligh

MaintenanceTDS3000 Series Service Manual6–273. Push the tab and lift the top end of the inverter board to clear the inverterchassis. See Figure 6–16A.

Maintenance6–28TDS3000 Series Service Manual6. Use your thumb to push the tab on the top right side of the display chassisuntil the tab clears the dis

MaintenanceTDS3000 Series Service Manual6–298. Use your thumb to push down the tab next to a back light tube, at the sametime pulling the back light t

Maintenance6–30TDS3000 Series Service ManualInstallation. Use this procedure to reassemble the display module.1. Insert backlight tubes into the displ

MaintenanceTDS3000 Series Service Manual6–316. Insert the inverter board assembly into the slots at the top and bottom of thedisplay chassis. The high

Maintenance6–32TDS3000 Series Service Manual3. Place the oscilloscope face down on a soft surface (such as an anti-staticmat), with the bottom facing

MaintenanceTDS3000 Series Service Manual6–336. Remove the front-panel and bezel button keypads by lifting them away fromthe front panel. Do not touch

TDS3000 Series Service Manual viiGeneral Safety SummaryReview the following safety precautions to avoid injury and prevent damage tothis product or an

Maintenance6–34TDS3000 Series Service ManualInstallation. Use this procedure to reinstall the front-panel board.1. Check that the front-panel lock nut

MaintenanceTDS3000 Series Service Manual6–35TroubleshootingThis section contains information and procedures to help you isolate a defectivemodule in a

Maintenance6–36TDS3000 Series Service ManualTroubleshooting ProcedureFigures 6–24 through 6–31 are troubleshooting procedure flowcharts. Use themto tr

MaintenanceTDS3000 Series Service Manual6–37Continued from Figure 6–24.Use DMM to measurevoltages on front-panel BNCconnector pads (see BNCconnector d

Maintenance6–38TDS3000 Series Service Manual Reconnect loose cables. Return to top of Figure 6–24.NoYesIs there+15 volts between pins 13 and 18? Measu

MaintenanceTDS3000 Series Service Manual6–39 Measure voltages ondisconnected cable as shown indiagram at right. Power off oscilloscope. Disconnect AC

Maintenance6–40TDS3000 Series Service Manual Power off oscilloscope. Disconnect AC power cord. Reconnect J700 cable to main board. Disconnect J950 cab

MaintenanceTDS3000 Series Service Manual6–41 Measure voltages onconnected J900 cable as shownin Figure 6–27 (page 6–39). Power off oscilloscope. Disc

Maintenance6–42TDS3000 Series Service ManualThis procedure assumes thatthe oscilloscope displayspower-up diagnosticsmessages. Push UTILITY. Push Syste

MaintenanceTDS3000 Series Service Manual6–43Unpacking and Repacking InstructionsThis section contains the information needed to unpack the oscilloscop

General Safety Summary viiiTDS3000 Series Service ManualAvoid Exposed Circuitry. Do not touch exposed connections and componentswhen power is present.

Maintenance6–44TDS3000 Series Service Manual

TDS3000 Series Service Manual7–1OptionsThe TDS3000 series options, listed in Table 7–1, provide power cords anddocumentation packages for internationa

Options7–2TDS3000 Series Service Manual

TDS3000 Series Service Manual8–1Electrical Parts ListRefer to the Mechanical Parts List chapter for a complete listing and descriptionof replaceable p

Electrical Parts List8–2TDS3000 Series Service Manual

TDS3000 Series Service Manual9–1DiagramsSee Figure 3–1 on page 3–1 for a block/interconnect diagram of the oscilloscope.There are no additional diagra

Diagrams9–2TDS3000 Series Service Manual

TDS3000 Series Service Manual10–1Mechanical Parts ListThis chapter contains a list of the replaceable modules for the TDS3000 seriesoscilloscope. Use

Mechanical Parts List10–2TDS3000 Series Service ManualModules can be serviced by selecting one of the following three options. Contactyour local Tektr

Mechanical Parts ListTDS3000 Series Service Manual10–3The table titled Manufacturers Cross Index shows codes, names, and addressesof manufacturers or

General Safety SummaryTDS3000 Series Service Manual ixCAUTION. Electrostatic discharge (ESD) can damage components in theoscilloscope and its accessor

Mechanical Parts List10–4TDS3000 Series Service Manual12345678910Figure 10–1: Exploded view, front case half

Mechanical Parts ListTDS3000 Series Service Manual10–5Replaceable parts list Fig. &indexnumberTektronixpart numberSerial no.effectiveSerial no.dis

Mechanical Parts List10–6TDS3000 Series Service Manual123456789101112Figure 10–2: Exploded view, LCD display

Mechanical Parts ListTDS3000 Series Service Manual10–7Replaceable parts list Fig. &indexnumberTektronixpart numberSerial no.effectiveSerial no.dis

Mechanical Parts List10–8TDS3000 Series Service Manual1234562Figure 10–3: Exploded view, main board and disk dive

Mechanical Parts ListTDS3000 Series Service Manual10–9Replaceable parts list Fig. &indexnumberTektronixpart numberSerial no.effectiveSerial no.dis

Mechanical Parts List10–10TDS3000 Series Service Manual12345678910111213143331516Figure 10–4: Exploded view, circuit board assembly and fan

Mechanical Parts ListTDS3000 Series Service Manual10–11Replaceable parts list Fig. &indexnumberTektronixpart numberSerial no.effectiveSerial no.di

Mechanical Parts List10–12TDS3000 Series Service Manual123456789Figure 10–5: Exploded view, rear case half

Mechanical Parts ListTDS3000 Series Service Manual10–13Replaceable parts list Fig. &indexnumberTektronixpart numberSerial no.effectiveSerial no.di

General Safety Summary xTDS3000 Series Service Manual

Mechanical Parts List10–14TDS3000 Series Service ManualAccessories list (cont.)Fig. &indexnumberMfr. part numberMfr. codeName & descriptionQty

TDS3000 Series Service Manual xiService Safety SummaryOnly qualified personnel should perform service procedures. Read this ServiceSafety Summary and

Service Safety Summary xiiTDS3000 Series Service Manual

TDS3000 Series Service ManualxiiiPrefaceThis is the Service Manual for the following TDS3000 Series Digital PhosphorOscilloscopes:TDS3012TDS3014TDS303

PrefacexivTDS3000 Series Service ManualService ProgramsTektronix offers calibration service and a program to extend repair coveragebeyond the warranty

TDS3000 Series Service Manual1–1SpecificationsThis appendix contains specifications for the TDS3000 series oscilloscopes. Allspecifications are guaran

Copyright Tektronix, Inc. All rights reserved.Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this pu

Specifications1–2TDS3000 Series Service ManualTable 1–1: Specifications (cont.)InputsInput coupling DC, AC, or GNDChannel input remains terminated whe

SpecificationsTDS3000 Series Service Manual1–3Table 1–1: Specifications (cont.)VerticalNumber of channelsTDS3012, TDS3032, TDS3052 TDS3014, TDS3034, T

Specifications1–4TDS3000 Series Service ManualTable 1–1: Specifications (cont.)VerticalPeak detect or Envelope pulseresp se pMinimum width of pulse wi

SpecificationsTDS3000 Series Service Manual1–5Table 1–1: Specifications (cont.)HorizontalAcquisition (horizon-tal) resolutionNormal Fast triggerRecord

Specifications1–6TDS3000 Series Service ManualTable 1–1: Specifications (cont.)TriggerEdge trigger se s pAny channel, NOISE REJ coupled 3.5 times the

SpecificationsTDS3000 Series Service Manual1–7Table 1–1: Specifications (cont.)DisplayDisplay screen 6.5 in (165 mm) diagonal color liquid crystalDisp

Specifications1–8TDS3000 Series Service ManualTable 1–1: Specifications (cont.)Power sourcesAC line power Operates the oscilloscope and charges the op

SpecificationsTDS3000 Series Service Manual1–9Table 1–1: Specifications (cont.)EnvironmentalAltitude Operating limit: 3000 mNonoperating limit: 15,000

Specifications1–10TDS3000 Series Service ManualTable 1–1: Specifications (cont.)EMC certifications and compliancesEMC Compliance:European UnionMeets i

SpecificationsTDS3000 Series Service Manual1–11Table 1–1: Specifications (cont.)Safety certifications and compliancesEC Declaration ofConformity – Low

WARRANTYTektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) yearsfrom the date of sh

Specifications1–12TDS3000 Series Service Manual

TDS3000 Series Service Manual2–1Operating InformationThis chapter provides an overview of the following topics:Transporting the oscilloscopeConnecting

Operating Information2–2TDS3000 Series Service ManualTransporting the OscilloscopeWhen transporting the oscilloscope, wrap the cord around the handle

Operating InformationTDS3000 Series Service Manual2–3Connecting PowerTo connect a power cord, do these steps:1. Open the strain relief and slip it ove

Operating Information2–4TDS3000 Series Service ManualWARNING. To avoid electric shock, always connect the rear-panel groundterminal to earth ground wh

Operating InformationTDS3000 Series Service Manual2–5To install the optional battery pack, do these steps:1. Open the battery compartment door on the

Operating Information2–6TDS3000 Series Service ManualThe battery charges automatically when the oscilloscope is connected to linepower. You can also c

Operating InformationTDS3000 Series Service Manual2–7Installing an Application ModuleCAUTION. To avoid damage to the oscilloscope or application modul

Operating Information2–8TDS3000 Series Service Manual6. If the application module came with one or more floppy disks, insert thefirmware upgrade flopp

Operating InformationTDS3000 Series Service Manual2–9Installing a Communication ModuleCAUTION. To avoid damage to the oscilloscope or communication mo

Operating Information2–10TDS3000 Series Service ManualFront-Panel Menus and ControlsThe front panel has buttons and controls for the functions you use

Operating InformationTDS3000 Series Service Manual2–113. Push a side screen button to choose a menu item. If the menu item containsmore than one choic

Operating Information2–12TDS3000 Series Service ManualYou can use the menu buttons to perform many functions in the oscilloscope.21 4365UTILITYDISPLAY

Operating InformationTDS3000 Series Service Manual2–13These dedicated buttons and controls generally control waveforms and cursorswithout the use of m

Operating Information2–14TDS3000 Series Service Manual12. WAVEFORM INTENSITY. Controls waveform intensity.13. B TRIG. Activates the B trigger. Changes

Operating InformationTDS3000 Series Service Manual2–15The following items may appear in the display; not all items are visible at anygiven time. Some

Operating Information2–16TDS3000 Series Service Manual14 1514. A triangle icon with the battery icon indicates that a battery is installed and battery

Operating InformationTDS3000 Series Service Manual2–171 25 43761. Edge Trigger controls. Push these screen buttons to set trigger parameters for edget

Operating Information2–18TDS3000 Series Service ManualFront-Panel Connectors 5V 12CH 4CH 3CH 2CH 11M , 13pF ≤300 VRMS CATlPROBE COMP3PROBE COMP 5

Operating InformationTDS3000 Series Service Manual2–19Rear-Panel Connectors15 42 31. Parallel printer port. Connect to a printer to make hard copies.2

TDS3000 Series Service ManualiTable of ContentsGeneral Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Serv

Operating Information2–20TDS3000 Series Service ManualProbe CompensationPerform this adjustment to match your probe to the input channel. This should

Operating InformationTDS3000 Series Service Manual2–21Self CalibrationThe self calibration routine lets you quickly optimize the oscilloscope signal p

Operating Information2–22TDS3000 Series Service Manual

TDS3000 Series Service Manual3–1Theory of OperationThis chapter describes the electrical operation of the oscilloscope to the modulelevel. Figure 3–1

Theory of Operation3–2TDS3000 Series Service ManualBattery BoardThe battery board provides the following functions:Interfaces to the optional battery

Theory of OperationTDS3000 Series Service Manual3–3The power converter receives 15 VDC (or battery voltage) from the battery boardand generates voltag

Theory of Operation3–4TDS3000 Series Service Manual

TDS3000 Series Service Manual4–1Performance VerificationThis chapter contains performance verification procedures for the specificationsmarked with th

Performance Verification4–2TDS3000 Series Service ManualTest RecordSerial numberProcedure performed by DateTest Passed FailedSelf TestPerformance chec

Performance VerificationTDS3000 Series Service Manual4–3Performance checks High limitTest resultLow limitChannel 3 DC me s reme1 mV/div 99.25 mV 100.8

Table of ContentsiiTDS3000 Series Service ManualMaintenancePreparation 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification4–4TDS3000 Series Service ManualPerformance Verification ProceduresBefore beginning these procedures, two conditions must firs

Performance VerificationTDS3000 Series Service Manual4–5This test checks the DC voltage measurement accuracy in the average acquisitionmode.1. Set the

Performance Verification4–6TDS3000 Series Service ManualVertical SCALE settingInvert settingBandwidth limitsettingOffsetInput voltageLow limitHigh lim

Performance VerificationTDS3000 Series Service Manual4–7This test checks the bandwidth for each channel.1. Connect the output of the leveled sine wave

Performance Verification4–8TDS3000 Series Service Manual18. Push the –more– screen button until you can select the Pk-Pk measure-ment.19. Set the vert

Performance VerificationTDS3000 Series Service Manual4–9This test checks the edge-trigger sensitivity for each channel.1. Connect the output of the le

Performance Verification4–10TDS3000 Series Service Manual19. Set the output frequency of the leveled sine wave generator to the frequencyshown in the

Performance VerificationTDS3000 Series Service Manual4–11This test checks the time base accuracy.1. Connect the output of the leveled sine wave genera

Performance Verification4–12TDS3000 Series Service Manual15. Turn the horizontal POSITION control counter-clockwise to set the delay toexactly 10 ms.1

TDS3000 Series Service Manual5–1Adjustment ProceduresThis chapter contains the factory adjustment procedures for the oscilloscope.Only qualified perso

Table of ContentsTDS3000 Series Service ManualiiiList of FiguresFigure 3–1: TDS3000 series block diagram 3–1. . . . . . . . . . . . . . . . . . . . .

Adjustment Procedures5–2TDS3000 Series Service ManualOverview of the Adjustment ProcessThe oscilloscope is protected from inadvertently changing facto

Adjustment ProceduresTDS3000 Series Service Manual5–3Signal ConnectionsThe adjustment procedure requires three types of equipment setups if you areadj

Adjustment Procedures5–4TDS3000 Series Service ManualNOTE. If the DC voltage source you are using has an output head, use afemale-to-female BNC adapte

Adjustment ProceduresTDS3000 Series Service Manual5–5During the procedure a fast rise step signal needs to be applied simultaneously toall channels. A

Adjustment Procedures5–6TDS3000 Series Service ManualFactory Adjustment ProcedureTo perform the factory adjustment procedure, do these steps:1. Locate

Adjustment ProceduresTDS3000 Series Service Manual5–711. Connect signals from the DC voltage source, leveled sine wave, or fast-risegenerator as instr

Adjustment Procedures5–8TDS3000 Series Service Manual

TDS3000 Series Service Manual6–1MaintenanceThis chapter contains the information needed to do periodic and correctivemaintenance on the oscilloscope.

Maintenance6–2TDS3000 Series Service Manual3. Discharge the static voltage from your body by wearing a grounded antistaticwrist strap while handling t

MaintenanceTDS3000 Series Service Manual6–3Inspection — Exterior. Inspect the outside of the oscilloscope for damage, wear,and missing parts. An oscil

Table of ContentsivTDS3000 Series Service ManualFigure 10–1: Exploded view, front case half 10–4. . . . . . . . . . . . . . . . . . . . . Figure 10–2:

Maintenance6–4TDS3000 Series Service ManualTable 6–1: Internal inspection check list (Cont.)Item Repair actionInspect forSolder connections Cold solde

MaintenanceTDS3000 Series Service Manual6–5Removal and Installation ProceduresThis section describes how to remove and install the major mechanical an

Maintenance6–6TDS3000 Series Service ManualTable 6–2 lists the removal and installation procedures in order of increasingcomplexity. Within each proce

MaintenanceTDS3000 Series Service Manual6–7You will need the following tools to remove and replace all the modules in theoscilloscope.Torque-limiting

Maintenance6–8TDS3000 Series Service ManualMetal pinHandleHubFigure 6–1: Pulling the hub pin5. Place the oscilloscope on its feet on soft surface (suc

MaintenanceTDS3000 Series Service Manual6–9Rotate the handleHubPull on the handleFigure 6–2: Releasing the hub assembly8. Locate the remaining hub on

Maintenance6–10TDS3000 Series Service Manual11. Raise the handle to its full upright position. The hub should rotate with thehandle.12. Pull outward o

MaintenanceTDS3000 Series Service Manual6–118. While pressing in on the hub assembly with your fingers, rotate the handle toits full upright position.

Maintenance6–12TDS3000 Series Service Manual6. Release the small communication module guide tab by lifting the chassis,and then remove the communicati

MaintenanceTDS3000 Series Service Manual6–13Pins are facedownDisk driveFigure 6–5: Flex cable to the disk driveInstallation. Use this procedure to ins

Table of ContentsTDS3000 Series Service ManualvList of TablesTable 1–1: Specifications 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance6–14TDS3000 Series Service ManualDisk driveBezelFigure 6–6: Removing the bezel from a new disk drive5. Carefully open the connector on the

MaintenanceTDS3000 Series Service Manual6–15You will need a Torx T-15 screwdriver to remove the rear chassis. You willneed a 316 inch nut driver to r

Maintenance6–16TDS3000 Series Service Manual3. Disconnect the external power cable from the battery board. See Figure 6–7.4. Remove the three screws t

MaintenanceTDS3000 Series Service Manual6–17Installation. Use this procedure to install the fan, line filter, parallel printer portcable, external pow

Maintenance6–18TDS3000 Series Service ManualGreen wire(groundconductor)Blue wireBlack wireLine powerconductorPower supply boardGreen wireLine filterFi

MaintenanceTDS3000 Series Service Manual6–198. Attach the DC power cable to the power supply.9. Connect the fan power cable to the battery board at J1

Maintenance6–20TDS3000 Series Service ManualYou will need a 18 inch flat-bladed screwdriver and a Torx T-15 screwdriver toremove the main board.Remov

MaintenanceTDS3000 Series Service Manual6–213. Grasp and pull up on the inverter board cable wires to disconnect the cablefrom J950 on the main board.

Maintenance6–22TDS3000 Series Service ManualInstallation. Use this procedure to install the main board and reconnect cables.1. Place the oscilloscope

MaintenanceTDS3000 Series Service Manual6–23You will need a Torx T-10 screwdriver to remove the front chassis.Removal. Use this procedure to remove t