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Service Manual
TDS 310, TDS 320 & TDS 350
Two Channel Oscilloscopes
070-8570-05
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.
This document applies for TDS 310, TDS 320,
and TDS 350 Oscilloscopes with serial numbers
B040100 and above.
Instrument Serial Numbers
Each instrument manufactured by Tektronix has a serial number on a panel insert or tag, or stamped on the
chassis. The first letter in the serial number designates the country of manufacture. The last five digits of the
serial number are assigned sequentially and are unique to each instrument. Those manufactured in the
United States have six unique digits. The country of manufacture is identified as follows:
B010000 Tektronix, Inc., Beaverton, Oregon, USA
E200000 Tektronix United Kingdom, Ltd., London
J300000 Sony/Tektronix, Japan
H700000 Tektronix Holland, NV, Heerenveen, The Netherlands
Instruments manufactured for Tektronix by external vendors outside the United States are assigned a two digit
alpha code to identify the country of manufacture (e.g., JP for Japan, HK for Hong Kong, IL for Israel, etc.).
Tektronix, Inc., P Box 500, Beaverton, OR 97077
.O.
Printed in U.S.A.
Copyright E Tektronix, Inc., 1993. All rights reserved. Tektronix products are covered by U.S. and foreign
patents, issued and pending. The following are registered trademarks: TEKTRONIX, TEK, TEK SECURE,
TEKPROBE, and SCOPE MOBILE.
WARRANTY
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years 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 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 POSSIBILITY OF SUCH DAMAGES.
Table of Contents
Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Specifications
Warranted Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Performance Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Typical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Nominal Traits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 11
Operating Information
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Display and Power Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2
Vertical Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3
Horizontal Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4
Trigger Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5
Miscellaneous Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6
Display Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 7
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Menu Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 11
Theory of Operation
Logic Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Module Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
A1 Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A2/A3 Option Board (Option 14 Instruments Only) . . . . . . . . . . 39
A4 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 10
A20 Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 11
A26 Monitor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 11
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 12
TDS 310, TDS 320 & TDS 350 Service Manual i
Table of Contents
Performance Verification
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Performance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 11
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 11
Signal Acquisition System Checks . . . . . . . . . . . . . . . . . . . . . . . . 4 11
Time Base System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 15
Trigger System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 17
Adjustment Procedures
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1
The System Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2
Attenuator Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4
Monitor Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6
Maintenance
Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Preventing ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
General Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Inspection and Cleaning Procedures . . . . . . . . . . . . . . . . . . . . . . 62
Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Preparation Please Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Line Fuse and Line Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Front Panel Knobs and Shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 11
Rear Cover, Cabinet, and Cabinet Handle . . . . . . . . . . . . . . . . . . 6 13
Trim Ring, Menu Elastomer, Menu Buttons, and Front
EMI Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 15
Front Panel Assembly and Menu Flex Circuit . . . . . . . . . . . . . . . 6 17
Main Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 20
Monitor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 23
Power Supply Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 26
Option 14 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 28
Fan and Fan Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 30
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 33
Onboard Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 33
ii Section Name (Nm:Sect)
Table of Contents
Enabling Calibration Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 35
Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 36
Repackaging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 49
Options
Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1
Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3
Accessory Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
Accessory Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
Electrical Parts List
Replaceable Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Diagrams
Diagrams and Circuit Board Illustrations . . . . . . . . . . . . . . . . . . . . . . 91
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1
Component Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 1
Graphic Items and Special Symbols Used in This Manual . . . 9 1
Component Locator Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2
Mechanical Parts List
Replaceable Mechanical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1
TDS 310, TDS 320 & TDS 350 Service Manual iii
Table of Contents
iv Section Name (Nm:Sect)
List of Figures
Figure 1 1: TDS 310, TDS 320, and TDS 350 Dimensions . . . . . . . . . 1 15
Figure 2 1: The TDS 320 Oscilloscope Front Panel . . . . . . . . . . . . . . . 21
Figure 2 2: Primary Functions Menu Map . . . . . . . . . . . . . . . . . . . . . . . 2 12
Figure 2 3: Secondary Functions Menu Map . . . . . . . . . . . . . . . . . . . . 2 13
Figure 3 1: Block Diagram (TDS 310, TDS 320, and
TDS 350 SN B029999 and Below) . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 3 2: TDS 300 Block Diagram (TDS 310, TDS 320, and
TDS 350 SN B030100 and Above) . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 3 3: Acquisition System Block Diagram . . . . . . . . . . . . . . . . . . . 35
Figure 4 1: Menu Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 4 2: Verifying Adjustments and Signal Path Compensation . . 46
Figure 4 3: Hookup for Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 4 4: Hookup for DC Voltage Measurement Accuracy Check . 4 12
Figure 4 5: Hookup for Analog Bandwidth Check . . . . . . . . . . . . . . . . 4 14
Figure 4 6: Measuring Analog Bandwidth . . . . . . . . . . . . . . . . . . . . . . . 4 15
Figure 4 7: Hookup for Sample Rate Check . . . . . . . . . . . . . . . . . . . . . 4 16
Figure 4 8: Hookup for Trigger Sensitivity Check . . . . . . . . . . . . . . . . . 4 18
Figure 4 9: Measuring Trigger Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . 4 19
Figure 5 1: The System Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . 5 2
Figure 5 2: Timing Compensation Waveform . . . . . . . . . . . . . . . . . . . . 5 4
Figure 5 3: Attenuator Adjustment Setup and Locations . . . . . . . . . . . 5 5
Figure 5 4: Monitor Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6
Figure 6 1: Oscilloscope Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Figure 6 2: Line Cord Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 10
Figure 6 3: Line Fuse Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 11
Figure 6 4: Knob and Shaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 12
Figure 6 5: Rear Cover, Cabinet, and Cabinet Handle and
Feet Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 14
Figure 6 6: Trim Ring, Menu Elastomer, and Menu Buttons
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 15
Figure 6 7: EMI Gasket Removal and Installation . . . . . . . . . . . . . . . . . 6 16
Figure 6 8: Front Panel Assembly and Menu Flex Circuit Removal . . 6 17
Figure 6 9: Disassembly of Front Panel Assembly . . . . . . . . . . . . . . . . 6 19
Figure 6 10: Main Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 21
Figure 6 11: BNC and Hybrid Removal . . . . . . . . . . . . . . . . . . . . . . . . . 6 22
Figure 6 12: Monitor Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 6 25
Figure 6 13: Low Voltage Power Supply Removal . . . . . . . . . . . . . . . . 6 27
Figure 6 14: Option 14 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 29
Figure 6 15: Option 14 Assembly Removal . . . . . . . . . . . . . . . . . . . . . . 6 30
TDS 310, TDS 320 & TDS 350 Service Manual v
List of Figures
Figure 6 16: Fan and Fan Mount Removal . . . . . . . . . . . . . . . . . . . . . . . 6 31
Figure 6 17: The Diagnostics Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 34
Figure 6 18: The Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 35
Figure 6 19: Main Board Cal Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 36
Figure 6 20: Primary Troubleshooting Procedure . . . . . . . . . . . . . . . . . 6 37
Figure 6 21: Module Isolation Troubleshooting Procedure . . . . . . . . . 6 38
Figure 6 22: Front Panel/Processor Troubleshooting Procedure . . . . 6 39
Figure 6 23: Monitor Troubleshooting Procedure . . . . . . . . . . . . . . . . . 6 40
Figure 6 24: J901 Pin 7 Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 41
Figure 6 25: J901 Pin 2 Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 41
Figure 6 26: J901 Pin 5 Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 42
Figure 6 27: Power Supply Troubleshooting Procedure . . . . . . . . . . . 6 43
Figure 6 28: Power Supply Connector Locations . . . . . . . . . . . . . . . . . 6 45
Figure 6 29: Supply Overload Troubleshooting Procedure . . . . . . . . . 6 46
Figure 6 30: I/O Interfaces Option Troubleshooting Procedure . . . . . 6 47
Figure 9 1: Graphic Items and Special Symbols Used in
This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 9 2: Component Locator Diagram Key . . . . . . . . . . . . . . . . . . . . 92
Figure 9 3: A1 Main Board (TDS 310, TDS 320, and TDS 350
SN B040100 and Above, Section A, B) . . . . . . . . . . . . . . . . . . . . . . 93
Figure 9 4: A1 Main Board (TDS 310, TDS 320, and TDS 350
SN B040100 and Above, Section C, D) . . . . . . . . . . . . . . . . . . . . . . 94
Figure 9 5: A1 Main Board (TDS 310 and TDS 350 SN B039999
and Below, and TDS 320 SN B021868 Through B039999,
Section A, B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Figure 9 6: A1 Main Board (TDS 310 and TDS 350 SN B039999
and Below, and TDS 320 SN B021868 Through B039999,
Section C, D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Figure 9 7: A1 Main Board (TDS 320 SN B021867 and Below,
Section A, B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 11
Figure 9 8: A1 Main Board (TDS 320 SN B021867 and Below,
Section C, D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 12
Figure 9 9: A2 Option Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 15
Figure 9 10: A3 Option 14 Printer Power . . . . . . . . . . . . . . . . . . . . . . . . 9 16
Figure 9 11: A4 Front Panel Board (Front) . . . . . . . . . . . . . . . . . . . . . . . 9 18
Figure 9 12: A4 Front Panel Board (Back) . . . . . . . . . . . . . . . . . . . . . . . 9 19
Figure 9 13: A26 Monitor Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 21
Figure 10 1: Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5
Figure 10 2: Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7
Figure 10 3: CRT, Power Supply, and Circuit Boards . . . . . . . . . . . . . . 10 9
Figure 10 4: Accessories-Cable Options . . . . . . . . . . . . . . . . . . . . . . . 10 10
vi Section Name (Nm:Sect)
List of Tables
Table 1 1: Warranted Characteristics Signal Acquisition System . 1 3
Table 1 2: Warranted Characteristics Time Base System . . . . . . . 1 4
Table 1 3: Warranted Characteristics Triggering System . . . . . . . . 1 5
Table 1 4: Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 6
Table 1 5: Warranted Characteristics Environmental, Safety,
and Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table 1 6: Typical Characteristics Signal Acquisition System . . . . 17
Table 1 7: Typical Characteristics Triggering System . . . . . . . . . . . 18
Table 1 8: Typical Characteristics Probe Compensator Output . . . 18
Table 1 9: Typical Characteristics Data Handling . . . . . . . . . . . . . . 19
Table 1 10: Nominal Traits Signal Acquisition System . . . . . . . . . . 1 11
Table 1 11: Nominal Traits Time Base System . . . . . . . . . . . . . . . . 1 12
Table 1 12: Nominal Traits Triggering System ............... 1 12
Table 1 13: Nominal Traits Display System . . . . . . . . . . . . . . . . . . . 1 12
Table 1 14: Nominal Traits I/O Interface Option . . . . . . . . . . . . . . . 1 13
Table 1 15: Nominal Traits Power Distribution System . . . . . . . . . . 1 13
Table 1 16: Nominal Traits Safety Characteristics . . . . . . . . . . . . . . 1 13
Table 1 17: Nominal Traits Mechanical Characteristics . . . . . . . . 1 14
Table 4 1: Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 4 2: DC Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 12
Table 5 1: Adjustment Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table 6 1: External Inspection Check List . . . . . . . . . . . . . . . . . . . . . . . 63
Table 6 2: Internal Inspection Check List . . . . . . . . . . . . . . . . . . . . . . . . 64
Table 6 3: Tools Required for Module Removal . . . . . . . . . . . . . . . . . . 68
Table 6 4: Power Supply Secondary Voltages . . . . . . . . . . . . . . . . . . . 6 44
Table 7 1: VGA Output Connector Pins . . . . . . . . . . . . . . . . . . . . . . . . . 7 1
Table 7 2: International Power Cords . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1
Table 7 3: Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3
Table 7 4: Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3
Table 7 6: Accessory Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4
TDS 310, TDS 320 & TDS 350 Service Manual vii
List of Tables
viii Section Name (Nm:Sect)
Safety Summary
Please take a moment to review these safety precautions. We provide them
for your protection and to prevent damage to the oscilloscope. This safety
information applies to all operators and service personnel.
Symbols and Terms These two terms appear in manuals:
H statements identify conditions or practices that could result in
damage to the equipment or other property.
H statements identify conditions or practices that could result in
personal injury or loss of life.
These two terms appear on equipment:
H CAUTION indicates a personal injury hazard not immediately accessible
as one reads the marking, or a hazard to property including the
equipment itself.
H DANGER indicates a personal injury hazard immediately accessible as
one reads the marking.
This symbol appears in manuals:
Static Sensitive Devices
These symbols appear on equipment:
DANGER Protective ATTENTION
High Voltage ground (earth) Refer to
terminal manual
TDS 310, TDS 320 & TDS 350 Service Manual ix
Safety Summary
Specific Precautions Observe all the following precautions to ensure your personal safety and to
prevent damage to either the oscilloscope or equipment connected to it.
Do Not Perform Service While Alone
Do not perform internal service or adjustment of this product unless another
person capable of rendering first aid and resuscitation is present.
Use Care When Servicing With Power On
Dangerous voltages exist at several points in this product. To avoid personal
injury, do not touch exposed connections or components while power is on.
Disconnect power before removing protective panels, soldering, or replacing
components.
Power Source
The TDS 310, TDS 320, and TDS 350 operate from a power source that does
not apply more than 250 VRMS between the supply conductors or between
either supply conductor and ground. A protective ground connection,
through the grounding conductor in the power cord, is essential for safe
system operation.
Grounding the Oscilloscope
The oscilloscope is grounded through the power cord. To avoid electric
shock, plug the power cord into a properly wired receptacle with an earth
ground connection. Do this before making connections to the input or output
terminals of the oscilloscope.
Without the protective ground connection, all parts of the oscilloscope are
potential shock hazards. This includes knobs and controls that may appear
to be insulators.
Use the Proper Power Cord
Use only the power cord and connector specified for your product. Use only
a power cord that is in good condition.
Use the Proper Fuse
To avoid fire hazard, use only a fuse that meets all type, voltage, and current
specifications on page 1 13.
Do Not Remove Covers or Panels
To avoid personal injury, do not operate the oscilloscope without the panels
or covers.
x Section Name (Nm:Sect)
Safety Summary
Do Not Operate in Explosive Atmospheres
The oscilloscope provides no explosion protection from static discharges or
arcing components. Do not operate the oscilloscope in an atmosphere of
explosive gasses.
Electric Overload
Never apply a voltage to a connector on the oscilloscope that is outside the
range specified for that connector.
TDS 310, TDS 320 & TDS 350 Service Manual xi
Safety Summary
xii Section Name (Nm:Sect)
Specifications
Specifications
This section contains complete specifications for the TDS 310, TDS 320, and
TDS 350. The specifications are divided into three subsections, one for each
of three classes of traits: warranted characteristics, typical characteristics,
and nominal traits.
TDS 310, TDS 320 & TDS 350 Service Manual 11
Specifications
12 Specifications
Warranted Characteristics
Warranted characteristics are described in terms of quantifiable performance
limits that are warranted. This subsection lists only warranted
characteristics.
NOTE
In these tables, those warranted characteristics that are checked in
the Performance Tests, starting on page 4 11, appear in boldface
type under the column Name.
Performance The electrical characteristics found in these tables of warranted
characteristics apply when the oscilloscope has been adjusted at an
Conditions ambient temperature between +20_ C and +30_ C, has had a warm up
period of at least 20 minutes, and is operating at an ambient temperature
between -10_ C and +55_ C (unless otherwise noted).
Table 1 1: Warranted Characteristics Signal Acquisition System
Name Description
Accuracy, DC Voltage Measurement, Measurement Type DC Accuracy
Average Acquisition Mode Average of 16 waveforms