Tektronix THS720A - Manual

Tektronix THS720A

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Table of Contents:

  • Page 3 – WARRANTY
  • Page 4 – Service Assurance; Service Assurance Advantages
  • Page 5 – Table of Contents
  • Page 6 – ii; Options; Electrical Parts List; Diagrams; Diagrams
  • Page 7 – iii; List of Figures
  • Page 8 – iv; List of Tables
  • Page 9 – General Safety Summary; Only qualified personnel should perform service procedures.; To Avoid Fire or
  • Page 10 – in injury or loss of life.; Terms on the Product.; Symbols and Terms
  • Page 11 – vii; Service Safety Summary; Do Not Service Alone.; Do not perform internal service or adjustments of this; Use Care When Servicing With Power On.; Dangerous voltages or currents may
  • Page 12 – viii
  • Page 13 – ix; Preface; Related Manuals; Language
  • Page 14 – Conventions
  • Page 16 – Specifications; symbol are checked in the chapter Performance Verification.; Table 1–1: Oscilloscope specifications; Acquisition; Inputs
  • Page 18 – Vertical; Horizontal
  • Page 19 – Internal Trigger; External Trigger
  • Page 20 – Measurements
  • Page 23 – Table 1–2: DMM specifications; General
  • Page 24 – AC Voltage
  • Page 25 – Continuity Check; Table 1–3: General specifications; Display
  • Page 26 – Probe Compensator Output
  • Page 27 – Environmental; Mechanical
  • Page 28 – Certifications and Compliances
  • Page 31 – Operating Information; This chapter provides a quick overview of the following topics:; Internal and External Power Sources; Configuration; To avoid shock hazard, the battery door must remain closed in wet or; Using the Battery Pack
  • Page 32 – Operator Information; Figure 2–1: Removing and replacing the battery; To avoid shock hazard, the DC input and I/O port hole plugs must; Figure 2–2: AC adapter attachment; Using External Power
  • Page 33 – Understanding the Front Panel; Using Scope Mode
  • Page 34 – Using Meter Mode
  • Page 35 – Press a front-panel button to display the menu you want to use.; Using the Menu System
  • Page 37 – Using the Dedicated
  • Page 38 – Connecting and Using the Probes; Figure 2–5: Connector locations
  • Page 39 – Connect the oscilloscope probe and then press AUTORANGE.; Compensating the
  • Page 40 – Attaching the Reference
  • Page 42 – Theory of Operation; Main Board; Oscilloscope Signal Path
  • Page 43 – Display Module
  • Page 45 – Performance Verification; is required to complete these procedures.; Description
  • Page 46 – Test Record
  • Page 47 – DMM Tests
  • Page 48 – Performance Verification Procedures; C, you must perform the; Execute the signal path compensation with the following steps:; resume operation of the TekScope instrument.; Signal Path Compensation
  • Page 49 – Execute Self Test
  • Page 50 – Set the DC voltage source output level to 0 V.; You may need to press Select Page to display this selection.
  • Page 51 – Accuracy Limits for V; Set DC voltage source output level to 0 V.
  • Page 52 – Set up the TekScope instrument using the following steps:; Check Oscilloscope
  • Page 53 – Set the TekScope instrument SEC/DIV to 10; or a; Proceed to the next test to check the channel 2 bandwidth.
  • Page 56 – Set the time mark generator period to 10 ms.
  • Page 57 – Change the TekScope instrument setup using the following steps:; graticule line within
  • Page 59 – Press SET LEVEL TO 50%. Adjust TRIGGER LEVEL as necessary and; Change the TekScope instrument setup using the following steps:; then check that triggering is stable.
  • Page 61 – Press SET LEVEL TO 50%. Adjust TRIGGER LEVEL as necessary and; Change the TekScope instrument setup using the following steps:
  • Page 62 – Check Meter DC Voltage
  • Page 63 – Set the DC voltage source output level to 0 V.
  • Page 64 – Set the AC voltage source output level to 0 V.; Check Meter AC Voltage
  • Page 65 – Set the AC voltage source output frequency to 500 Hz.; and then compare the meter reading to the accuracy limits.; Set the AC voltage source output level to 0 V.
  • Page 66 – Check Meter Resistance
  • Page 67 – This completes the performance verification procedure.
  • Page 70 – Adjustment Procedures; NOTE; Required Equipment
  • Page 71 – Overview of the Adjustment Process
  • Page 72 – Accessing the Adjustment-Lockout Jumper; Before doing this or any other procedure in this manual, read the
  • Page 73 – Figure 5–1: Location of adjustment-lockout jumper; To avoid cross-threading or cutting new threads with the screws,; a. Place the screws into their holes in the back cover.
  • Page 74 – Oscilloscope Adjustment; Table 5–1: Summary of oscilloscope adjustment steps; Step
  • Page 75 – Square wave generator setup; Figure 5–2: Oscilloscope adjustment setups
  • Page 77 – Meter Adjustment; Table 5–2: Summary of meter adjustment steps; W shunt
  • Page 78 – DC voltage setup; Figure 5–3: Meter adjustment setups
  • Page 79 – Set the DC voltage source amplitude to 400 mV.
  • Page 80 – Replacing the Adjustment-Lockout Jumper; Figure 5–4: Relocating the adjustment-lockout jumper; This completes the adjustment procedure.
  • Page 83 – Maintenance; Preparation; Static discharge can damage any semiconductor component in this
  • Page 84 – Inspection and Cleaning; To avoid damage to the TekScope instrument, do not expose it to any; General Care
  • Page 85 – any abrasive or chemical cleaning agents.; Inspection — Interior.; Item
  • Page 86 – Cleaning Procedure — Interior.; To clean the TekScope instrument interior,
  • Page 87 – Removal and Installation Procedures; Read the Summary of Procedures on page 6–6 to understand which
  • Page 88 – Table 6–2: Removal and installation procedures; Procedure; Summary of Procedures
  • Page 89 – Tools Required
  • Page 90 – STOP; Figure 6–1: Removing the tilt stand; Tilt Stand
  • Page 91 – Figure 6–2: Installing the tilt stand
  • Page 92 – Use the sharp knife to pry up a corner of the label.; or the existing front cover.; Peel the paper off the back side of the new label.; cover as shown in Figure 6–3.; Figure 6–3: Installing a new front-panel label
  • Page 93 – Front Cover
  • Page 94 – Figure 6–4: Removing the battery door
  • Page 95 – a. Install a new label using the procedure on page 6–10.; Figure 6–5: Assembling a new front cover
  • Page 96 – Figure 6–6: Installing the gasket
  • Page 97 – Figure 6–7: Installing the handle
  • Page 98 – To avoid scratching the surface of the display module, do not let it
  • Page 99 – Figure 6–8: Removing the display module; Using the
  • Page 100 – Figure 6–9: Opening the display cable connector; the cable in the channels as shown in Figure 6–10.
  • Page 101 – Figure 6–10: Routing cables to the inverter board; Back Cover
  • Page 102 – Figure 6–11: Lifting the chassis; inch flat-bladed screwdriver
  • Page 103 – Figure 6–12: Foam pad and hole plug locations on the back cover; clearance for the chassis.
  • Page 104 – Figure 6–13: Routing the battery wires
  • Page 105 – g. Complete the removal of the main board and switch flex-circuit; Complete Disassembly
  • Page 106 – To remove the inverter board cable from the main board, unplug it.
  • Page 107 – Figure 6–15: Foam pad locations on the chassis; facing up and away from you.
  • Page 108 – b. Dress the battery wires away from you.; under the main board.
  • Page 109 – Figure 6–16: Reassembling the chassis
  • Page 110 – Troubleshooting; Tools and Equipment; Display color is dark blue or violet when viewed straight on; Adjustment After Repair
  • Page 111 – Figure 6–17: Battery connector location
  • Page 112 – With the AC adapter still disconnected, use a DMM to measure the DC; Instructions; inch flat-bladed screwdriver to lift the lower edge of the chassis
  • Page 113 – Instrument Behavior; Figure 6–18: Bypassing the ON/STBY switch
  • Page 114 – Using a DMM, measure the DC voltage across pins 1 and 2 of the input; Backlight
  • Page 115 – Oscilloscope Display; Follow these steps to troubleshoot a nonfunctional display.; Connect the AC adapter to the instrument; flex-circuit assembly toward you to access display cable.; Signal at Loose End of Display Cable
  • Page 116 – instrument is on by probing the PROBE COMP output.
  • Page 117 – Executing Diagnostics
  • Page 118 – Check that the wire connections to the back side of the DMM and COM; Input Connections
  • Page 119 – Button; Other Troubleshooting
  • Page 121 – Battery and External Power.; Verify the battery and external power with the; AC Adapter Voltage Measurement
  • Page 122 – Unpacking and Repacking Instructions; Unpacking
  • Page 124 – Table 7–1: TekScope instrument options; Option
  • Page 133 – Part number (see Part Number Revision Level below); Part Number Revision
  • Page 134 – Using the Replaceable Parts List; Parts List Column Descriptions; Column; Module Servicing
  • Page 135 – Manufacturers Cross Index; Manufacturer
  • Page 136 – Replaceable Parts List
  • Page 137 – Figure 10–1: Exploded diagram
  • Page 138 – Table 10–1: Replaceable standard accessories; Description of Accessory
Loading the manual

Service Manual

THS710A, THS720A,
THS730A & THS720P
TekScope

070-9752-01

This document applies to to serial number
B010100 and above and firmware version 1.00
and above.

First printing: February 1998

Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.

"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.

Summary

Page 3 - WARRANTY

WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) yearsfrom the date of purchase from an authorized Tektronix distributor. If any such product proves defective during thiswarranty period, Tektronix, at its option, either wi...

Page 4 - Service Assurance; Service Assurance Advantages

Service Assurance If you have not already purchased Service Assurance for this product, you may do so at any time during the product’swarranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs. Repair Protection extends priority repair services beyond t...

Page 5 - Table of Contents

THS710A, THS720A, THS730A & THS720P Service Manual i Table of Contents General Safety Summary v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface ix . . . . . . . . ...

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