Tektronix THS710A Manuel d'utilisateur

Service ManualTHS710A, THS720A,THS730A & THS720PTekScope070-9752-01This document applies to to serial numberB010100 and above and firmware versio

General Safety Summary viTHS710A, THS720A, THS730A & THS720P Service ManualTerms in this Manual. These terms may appear in this manual:WARNING. Wa

Maintenance6–18THS710A, THS720A, THS730A & THS720P Service ManualContact side of cableFigure 6–9: Opening the display cable connectorInstallation.

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–19Route cablethrough channelsDisplay moduleRoute cableunder clipRoute cablethrough

Maintenance6–20THS710A, THS720A, THS730A & THS720P Service Manual4. Carefully lift the bottom of the chassis out of the back cover. As the chassis

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–21Install foam padsInstall foam padsInstall foam padInstall foam padInstall I/O por

Maintenance6–22THS710A, THS720A, THS730A & THS720P Service ManualDress wires from batterypack through slotsRetain connectorsbetween pinsLocate fer

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–23You will need a 1@8 inch flat-bladed screwdriver and needle-nose pliers to remove

Maintenance6–24THS710A, THS720A, THS730A & THS720P Service ManualLift hereUnplug connectorsDisplaymodule cableBattery cable123456Unplug connecto

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–25Installation. Use this procedure to reassemble the entire instrument.1. Check tha

Maintenance6–26THS710A, THS720A, THS730A & THS720P Service Manual5. To prepare the main board and switch flex circuit board for installation intot

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–27Insert circuit board tabsinto chassis holesRoute battery cable intoslot in chassi

THS710A, THS720A, THS730A & THS720P Service Manual viiService Safety SummaryOnly qualified personnel should perform service procedures. Read this

Maintenance6–28THS710A, THS720A, THS730A & THS720P Service ManualTroubleshootingThis section contains information and procedures to help you isola

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–29H Displayed information is interrupted by static horizontal or vertical linesor s

Maintenance6–30THS710A, THS720A, THS730A & THS720P Service Manual8. With the AC adapter still disconnected, use a DMM to measure the DCvoltage at

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–3112. Using a bent paper clip, momentarily short pins 15 and 17 of the connectorto

Maintenance6–32THS710A, THS720A, THS730A & THS720P Service ManualFollow these steps to troubleshoot a nonfunctional backlight.1. Remove the front

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–335. Hold the probe tip above the output connector of the inverter board. Do nottou

Maintenance6–34THS710A, THS720A, THS730A & THS720P Service ManualSignal at Loose End of Display Cable DescriptionPin 7 –10 VDC to –22 VDCPin 8 0 V

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–35Follow these steps to troubleshoot using diagnostics.1. To execute the internal d

Maintenance6–36THS710A, THS720A, THS730A & THS720P Service ManualFollow these steps to troubleshoot the input connections only if the followingcon

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–37Use these techniques to troubleshoot other parts of the instrument.Buttons. Press

Service Safety Summary viiiTHS710A, THS720A, THS730A & THS720P Service Manual

Maintenance6–38THS710A, THS720A, THS730A & THS720P Service ManualPROBE COMP Output. When the instrument is on, the PROBE COMP outputshould generat

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–39Battery and External Power. Verify the battery and external power with thefollowi

Maintenance6–40THS710A, THS720A, THS730A & THS720P Service ManualUnpacking and Repacking InstructionsThis section contains the information needed

THS710A, THS720A, THS730A & THS720P Service Manual7–1OptionsThe TekScope instrument options provide AC adapters, User Manuals, andReference Manual

Options7–2THS710A, THS720A, THS730A & THS720P Service Manual

THS710A, THS720A, THS730A & THS720P Service Manual8–1Electrical Parts ListRefer to the Mechanical Parts List chapter for a complete listing and de

Electrical Parts List8–2THS710A, THS720A, THS730A & THS720P Service Manual

THS710A, THS720A, THS730A & THS720P Service ManualixPrefaceThis is the Service Manual for the THS710A, THS720A, THS730A, andTHS720P TekScope instr

THS710A, THS720A, THS730A & THS720P Service Manual9–1DiagramsSee Figure 3–1 on page 3–2 for a block/interconnect diagram of the TekScopeinstrument

Diagrams9–2THS710A, THS720A, THS730A & THS720P Service Manual

THS710A, THS720A, THS730A & THS720P Service Manual10–1Mechanical Parts ListThis section contains a list of the replaceable modules for the TekScop

Mechanical Parts List10–2THS710A, THS720A, THS730A & THS720P Service ManualModules can be serviced by selecting one of the following three options

Mechanical Parts ListTHS710A, THS720A, THS730A & THS720P Service Manual10–3Manufacturers Cross Index Mfr.CodeManufacturer Address City, State, Zip

Mechanical Parts List10–4THS710A, THS720A, THS730A & THS720P Service ManualReplaceable Parts List Fig. &IndexNumberTektronix PartNumberSerial

Mechanical Parts ListTHS710A, THS720A, THS730A & THS720P Service Manual10–5112234567891011121314151617181920212299999Figure 10–1: Exploded diagram

Mechanical Parts List10–6THS710A, THS720A, THS730A & THS720P Service ManualTable 10–1 lists the replaceable standard accessories for the TekScope

Mechanical Parts ListTHS710A, THS720A, THS730A & THS720P Service Manual10–7Table 10–1: Replaceable standard accessories (Cont.)Tektronix Part Numb

PrefacexTHS710A, THS720A, THS730A & THS720P Service ManualConventionsIn the Performance Verification, Adjustments, and Maintenance chapters of thi

Mechanical Parts List10–8THS710A, THS720A, THS730A & THS720P Service Manual

THS710A, THS720A, THS730A & THS720P Service Manual1–1SpecificationsThis chapter contains the oscilloscope, DMM, and general specifications for the

Specifications1–2THS710A, THS720A, THS730A & THS720P Service ManualTable 1–1: Oscilloscope specifications (Cont.)InputsMaximum VoltageBetween Comm

SpecificationsTHS710A, THS720A, THS730A & THS720P Service Manual1–3Table 1–1: Oscilloscope specifications (Cont.)VerticalDC Gain Accuracy ±2% for

Specifications1–4THS710A, THS720A, THS730A & THS720P Service ManualTable 1–1: Oscilloscope specifications (Cont.)Internal TriggerTrigger Sensitivi

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

SpecificationsTHS710A, THS720A, THS730A & THS720P Service Manual1–5Table 1–1: Oscilloscope specifications (Cont.)MeasurementsCursors Voltage diffe

Specifications1–6THS710A, THS720A, THS730A & THS720P Service ManualTable 1–1: Oscilloscope specifications (Cont.)Power Measurements (THS720P)PF Me

SpecificationsTHS710A, THS720A, THS730A & THS720P Service Manual1–7Table 1–1: Oscilloscope specifications (Cont.)With P5102 ProbeAnalog Bandwidth,

Specifications1–8THS710A, THS720A, THS730A & THS720P Service ManualTable 1–2: DMM specifications GeneralResolution 33⁄4 digit, 4000 count full sca

SpecificationsTHS710A, THS720A, THS730A & THS720P Service Manual1–9Table 1–2: DMM specifications (Cont.)AC VoltageConversion Type AC conversions a

Specifications1–10THS710A, THS720A, THS730A & THS720P Service ManualTable 1–2: DMM specifications (Cont.)/ResistanceOpen Circuit Voltage,ypRange

SpecificationsTHS710A, THS720A, THS730A & THS720P Service Manual1–11Table 1–3: General specifications (Cont.)RS-232 InterfaceDevice Type DTE. at R

Specifications1–12THS710A, THS720A, THS730A & THS720P Service ManualTable 1–3: General specifications (Cont.)EnvironmentalTemperatureOperating –10

SpecificationsTHS710A, THS720A, THS730A & THS720P Service Manual1–13Table 1–3: General specifications (Cont.)Certifications and CompliancesCertifi

Specifications1–14THS710A, THS720A, THS730A & THS720P Service Manual

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

THS710A, THS720A, THS730A & THS720P Service Manual2–1Operating InformationThis chapter provides a quick overview of the following topics:H Interna

Operator Information2–2THS710A, THS720A, THS730A & THS720P Service ManualBattery packFigure 2–1: Removing and replacing the batteryFor benchtop op

Operator InformationTHS710A, THS720A, THS730A & THS720P Service Manual2–3CAUTION. To avoid overheating, do not connect external power while theins

Operator Information2–4THS710A, THS720A, THS730A & THS720P Service ManualPress the front-panel METER button to enter meter mode. Press one of the

Operator InformationTHS710A, THS720A, THS730A & THS720P Service Manual2–5To use the menu system, follow the steps below:1. Press a front-panel but

Operator Information2–6THS710A, THS720A, THS730A & THS720P Service Manual3. After choosing some menu items, you need to set a numerical parameter

Operator InformationTHS710A, THS720A, THS730A & THS720P Service Manual2–7You can use the dedicated buttons below to take direct actions. These but

Operator Information2–8THS710A, THS720A, THS730A & THS720P Service Manual14. CH 1, CH 2, MATH, REF A, REF B. Displays waveform and choosesselected

Operator InformationTHS710A, THS720A, THS730A & THS720P Service Manual2–9To maintain signal fidelity, you must compensate each voltage probe for t

Service AssuranceIf you have not already purchased Service Assurance for this product, you may do so at any time during the product’swarranty period.

Operator Information2–10THS710A, THS720A, THS730A & THS720P Service ManualIf you are using both of the oscilloscope channels, you must attach the

THS710A, THS720A, THS730A & THS720P Service Manual3–1Theory of OperationThis chapter describes the electrical operation of the TekScope instrument

Theory of Operation3–2THS710A, THS720A, THS730A & THS720P Service ManualDisplay ModuleThe display module consists of a liquid crystal display (LCD

THS710A, THS720A, THS730A & THS720P Service Manual4–1Performance VerificationThis chapter contains performance verification procedures for the spe

Performance Verification4–2THS710A, THS720A, THS730A & THS720P Service ManualTest RecordSerial NumberProcedure Performed by DateTest Passed Failed

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–3DMM Tests Low Limit Test Result High LimitDC Voltage Accuracy400 mV r

Performance Verification4–4THS710A, THS720A, THS730A & THS720P Service ManualPerformance Verification ProceduresIn these procedures, TekScope inst

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–5This procedure uses internal routines to verify that the TekScope ins

THS710A, THS720A, THS730A & THS720P Service ManualiTable of ContentsGeneral Safety Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification4–6THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the DC measurement accuracy of the oscilloscope.1. S

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–74. For each VOLTS/DIV setting listed below, perform the following ste

Performance Verification4–8THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the bandwidth of channel 1.1. Set up the TekScope in

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–93. Set the TekScope instrument VOLTS/DIV to 100 mV/div.4. Set the Tek

Performance Verification4–10THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the bandwidth of channel 2.1. First check the chann

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–113. Set the TekScope instrument VOLTS/DIV to 100 mV/div.4. Set the Te

Performance Verification4–12THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the oscilloscope time base accuracy.1. Set up the T

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–136. Press SET LEVEL TO 50%.7. Press MAG.8. Change the TekScope instru

Performance Verification4–14THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the edge trigger sensitivity for channel 1.1. Set u

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–153. Set the leveled sine wave generator frequency to 200 MHz if you a

Table of ContentsiiTHS710A, THS720A, THS730A & THS720P Service ManualOptionsOptions 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification4–16THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the edge trigger sensitivity for channel 2.1. First

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–173. Set the leveled sine wave generator frequency to 200 MHz if you a

Performance Verification4–18THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the meter DC voltage accuracy.1. Set the DC voltage

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–194. For each range, set the DC voltage source output to the level lis

Performance Verification4–20THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the meter AC voltage accuracy.1. Set the AC voltage

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–214. Set the AC voltage source output frequency to 500 Hz.5. For each

Performance Verification4–22THS710A, THS720A, THS730A & THS720P Service ManualThis test checks the meter resistance measurement accuracy.1. Set up

Performance VerificationTHS710A, THS720A, THS730A & THS720P Service Manual4–233. For each range, set the resistance standard to the resistance lis

Performance Verification4–24THS710A, THS720A, THS730A & THS720P Service Manual

Table of ContentsTHS710A, THS720A, THS730A & THS720P Service ManualiiiList of FiguresFigure 2–1: Removing and replacing the battery 2–2. . . . . .

THS710A, THS720A, THS730A & THS720P Service Manual5–1Adjustment ProceduresThis chapter contains adjustment procedures for the TekScope instrument.

Adjustment Procedures5–2THS710A, THS720A, THS730A & THS720P Service ManualDescription ExamplesMinimum RequirementsDual Banana to BNC Adapter Banan

Adjustment ProceduresTHS710A, THS720A, THS730A & THS720P Service Manual5–3Accessing the Adjustment-Lockout JumperBefore adjusting the instrument y

Adjustment Procedures5–4THS710A, THS720A, THS730A & THS720P Service ManualAdjustment-lockoutjumperFigure 5–1: Location of adjustment-lockout jumpe

Adjustment ProceduresTHS710A, THS720A, THS730A & THS720P Service Manual5–5c. When all four all screws are in, hold a corner of the case together f

Adjustment Procedures5–6THS710A, THS720A, THS730A & THS720P Service ManualFast rise squarewave generatorCh 2Output50  feedthroughterminator36 inc

Adjustment ProceduresTHS710A, THS720A, THS730A & THS720P Service Manual5–7After removing the adjustment-lockout jumper, use this procedure to adju

Adjustment Procedures5–8THS710A, THS720A, THS730A & THS720P Service ManualMeter AdjustmentThree equipment setups, shown in Figure 5–3, are require

Adjustment ProceduresTHS710A, THS720A, THS730A & THS720P Service Manual5–9+–DC voltagesourceBanana cablesAC voltagesourceBanana cablesResistancest

Adjustment Procedures5–10THS710A, THS720A, THS730A & THS720P Service ManualAfter removing the adjustment-lockout jumper, use this procedure to adj

Table of ContentsivTHS710A, THS720A, THS730A & THS720P Service ManualList of TablesTable 1–1: Oscilloscope specifications 1–1. . . . . . . . . .

Adjustment ProceduresTHS710A, THS720A, THS730A & THS720P Service Manual5–11Replacing the Adjustment-Lockout JumperAfter you complete the adjustmen

Adjustment Procedures5–12THS710A, THS720A, THS730A & THS720P Service Manual

THS710A, THS720A, THS730A & THS720P Service Manual6–1MaintenanceThis chapter contains the information needed to do periodic and correctivemaintena

Maintenance6–2THS710A, THS720A, THS730A & THS720P Service Manual3. Discharge the static voltage from your body by wearing a grounded antistaticwri

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–3Inspection — Exterior. Inspect the outside of the TekScope instrument fordamage, w

Maintenance6–4THS710A, THS720A, THS730A & THS720P Service ManualTable 6–1: Internal inspection check list (Cont.)Item Repair ActionInspect ForSold

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–5Removal and Installation ProceduresThis section describes how to remove and instal

Maintenance6–6THS710A, THS720A, THS730A & THS720P Service ManualTable 6–2 lists the removal and installation procedures in order of increasingcomp

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–7You will need the following tools to remove and replace all the modules in theTekS

THS710A, THS720A, THS730A & THS720P Service Manual vGeneral Safety SummaryReview the following safety precautions to avoid injury and prevent dama

Maintenance6–8THS710A, THS720A, THS730A & THS720P Service ManualYou will need a 1@4 inch flat-bladed screwdriver to remove the tilt stand.STOP. Yo

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–9Installation. Use this procedure to install a new tilt stand.1. Orient the tilt st

Maintenance6–10THS710A, THS720A, THS730A & THS720P Service ManualYou will need a sharp knife and needle-nose pliers to remove a defectivefront-pan

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–11You will need a torque-limiting Torx T-15 screwdriver, needle-nose pliers, andsh

Maintenance6–12THS710A, THS720A, THS730A & THS720P Service ManualFigure 6–4: Removing the battery doorNOTE. In most cases, the gasket does not hav

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–134. If you are installing a new front cover, follow these steps to assemble itbefo

Maintenance6–14THS710A, THS720A, THS730A & THS720P Service ManualFront coverGasket materialTrim tails to 1@8 inchOverlap gasket materialFigure 6–6

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–15Velcro stripFold end of handle overFigure 6–7: Installing the handle

Maintenance6–16THS710A, THS720A, THS730A & THS720P Service ManualCAUTION. To avoid cross-threading or cutting new threads with the screws,carefull

MaintenanceTHS710A, THS720A, THS730A & THS720P Service Manual6–17Display moduleSpringInverter boardDisplay cable connectorSwitch flex-circuit boar