Tektronix TDS 310, TDS 320, TDS 350 User Manual

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.

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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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1:3
Performance Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1:3
Typical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1:7
Nominal Traits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1:11

Operating Information

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2:1
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2:9
Menu Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2:11

Theory of Operation

Logic Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3:1
Module Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3:1
A1 Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3:4
A2/A3 Option Board (Option 14 Instruments Only) . . . . . . . . . .	3:9
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

Table of Contents

Performance Verification

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=1
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=3
Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=3
Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=5
Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=7
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5=1
Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5=1
The System Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5=2
Attenuator Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5=4
Monitor Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5=6

Maintenance

Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6=1
Preventing ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6=1
General Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6=2
Inspection and Cleaning Procedures . . . . . . . . . . . . . . . . . . . . . .	6=2
Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6=7
Preparation > Please Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6=7
Line Fuse and Line Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6=9
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

Section Name (Nm:Sect)

	Table of Contents
Enabling Calibration Menus . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . 6435
Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 6436
Repackaging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 6449

Options

Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	741
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	741
Standard Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	743
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	743
Accessory Probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	744
Accessory Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	744

Electrical Parts List

Replaceable Electrical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

841

Diagrams

Diagrams and Circuit Board Illustrations . . . . . . . . . . . . . . . . . . . . . .	941
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	941
Component Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	941
Graphic Items and Special Symbols Used in This Manual . . .	941
Component Locator Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . .	942

Mechanical Parts List

Replaceable Mechanical Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1041

TDS 310, TDS 320 & TDS 350 Service Manual

Table of Contents

v	Section Name (Nm:Sect)

List of Figures

Figure 1?1:>TDS 310 TDS 320 and TDS 3 0 Dimensions		1?1
Figure 2?1:>The TDS 320 Oscilloscope Front Panel		2?1
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 3 0 SN B029999 and Below		3?2
Figure 3?2:>TDS 300 Block Diagram TDS 310 TDS 320 and
TDS 3 0 SN B030100 and Above		3?3
Figure 3?3:>Acquisition System Block Diagram		3?
Figure 4?1:>Menu Locations		4?2
Figure 4?2:>Verifying Adjustments and Signal Path Compensation		4?6
Figure 4?3:>Hookup for Functional Test		4?8
Figure 4?4:>Hookup for DC Voltage Measurement Accuracy Check		4?12
Figure 4? :>Hookup for Analog Bandwidth Check		4?14
Figure 4?6:>Measuring Analog Bandwidth		4?1
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 ?1:>The System Calibration Menu		?2
Figure ?2:>Timing Compensation Waveform		?4
Figure ?3:>Attenuator Adjustment Setup and Locations		?
Figure ?4:>Monitor Adjustments		?6
Figure 6?1:>Oscilloscope Orientation		6?8
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? :>Rear Cover Cabinet and Cabinet Handle and
Feet Removal		6?14
Figure 6?6:>Trim Ring Menu Elastomer and Menu Buttons
Removal		6?1
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?2
Figure 6?13:>Low Voltage Power Supply Removal		6?27
Figure 6?14:>Option 14 Disassembly		6?29
Figure 6?1 :>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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9=2
Figure 9=2:<Component Locator Diagram Key . . . . . . . . . . . . . . . . . . . .	9=2
Figure 9=3:<A1 Main Board TDS 310 TDS 320 and TDS 350
SN B040100 and Above Section A B . . . . . . . . . . . . . . . . . . . . . .	9=3
Figure 9=4:<A1 Main Board TDS 310 TDS 320 and TDS 350
SN B040100 and Above Section C D . . . . . . . . . . . . . . . . . . . . . .	9=4
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9=7
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9=8
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

v	Section Name (Nm:Sect)

List of Tables

T"#l&;1=1:<W"rr"nt&% C)"r"$t&r*st*$s > S*(n"l A$qu*s*t*on Syst&m .	1=3
T"#l&;1=2:<W"rr"nt&% C)"r"$t&r*st*$s > T*m& B"s& Syst&m . . . . . . .	1=4
T"#l&;1=3:<W"rr"nt&% C)"r"$t&r*st*$s > Tr*((&r*n( Syst&m . . . . . . . .	1=5
T"#l&;1=4:<Pow&r R&qu*r&m&nts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1=6
T"#l&;1=5:<W"rr"nt&% C)"r"$t&r*st*$s > Env*ronm&nt"l, S"'&ty,
"n% R&l*"#*l*ty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1=6
T"#l&;1=6:<Typ*$"l C)"r"$t&r*st*$s > S*(n"l A$qu*s*t*on Syst&m . . . .	1=
T"#l&;1= :<Typ*$"l C)"r"$t&r*st*$s > Tr*((&r*n( Syst&m . . . . . . . . . . .	1=8
T"#l&;1=8:<Typ*$"l C)"r"$t&r*st*$s > Pro#& Comp&ns"tor Output . . .	1=8
T"#l&;1=9:<Typ*$"l C)"r"$t&r*st*$s > D"t" H"n%l*n( . . . . . . . . . . . . . .	1=9
T"#l&;1=10:<Nom*n"l Tr"*ts > S*(n"l A$qu*s*t*on Syst&m . . . . . . . . . .	1=11
T"#l&;1=11:<Nom*n"l Tr"*ts > T*m& B"s& Syst&m . . . . . . . . . . . . . . . .	1=12
T"#l&;1=12:<Nom*n"l Tr"*ts > Tr*((&r*n( Syst&m . . . . . . . . . . . . . . .	1=12
T"#l&;1=13:<Nom*n"l Tr"*ts > D*spl"y Syst&m . . . . . . . . . . . . . . . . . . .	1=12
T"#l&;1=14:<Nom*n"l Tr"*ts > I/O Int&r'"$& Opt*on . . . . . . . . . . . . . . .	1=13
T"#l&;1=15:<Nom*n"l Tr"*ts > Pow&r D*str*#ut*on Syst&m . . . . . . . . . .	1=13
T"#l&;1=16:<Nom*n"l Tr"*ts > S"'&ty C)"r"$t&r*st*$s . . . . . . . . . . . . . .	1=13
T"#l&;1=1 :<Nom*n"l Tr"*ts > M&$)"n*$"l C)"r"$t&r*st*$s . . . . . . . .	1=14
T"#l&;4=1:<T&st Equ*pm&nt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=3
T"#l&;4=2:<DC A$$ur"$y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4=12
T"#l&;5=1:<A%justm&nt Equ*pm&nt . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5=1
T"#l&;6=1:<Ext&rn"l Insp&$t*on C)&$k L*st . . . . . . . . . . . . . . . . . . . . . . .	6=3
T"#l&;6=2:<Int&rn"l Insp&$t*on C)&$k L*st . . . . . . . . . . . . . . . . . . . . . . . .	6=4
T"#l&;6=3:<Tools R&qu*r&% 'or Mo%ul& R&mov"l . . . . . . . . . . . . . . . . . .	6=8
T"#l&;6=4:<Pow&r Supply S&$on%"ry olt"(&s . . . . . . . . . . . . . . . . . . .	6=44
T"#l&; =1:< GA Output Conn&$tor P*ns . . . . . . . . . . . . . . . . . . . . . . . . .	=1
T"#l&; =2:<Int&rn"t*on"l Pow&r Cor%s . . . . . . . . . . . . . . . . . . . . . . . . . . .	=1
T"#l&; =3:<St"n%"r% A$$&ssor*&s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	=3
T"#l&; =4:<Opt*on"l A$$&ssor*&s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	=3
T"#l&; =6:<A$$&ssory C"#l&s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	=4

TDS 310, TDS 320 & TDS 350 Service Manual

v

List of Tables

v	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:

HT indicates a personal injury hazard not immediately accessible as one reads the marking or a hazard to property including the equipment itself

HR 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

x

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

x

Safety Summary

x	Section Name (Nm:Sect)

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

1 1

Specifications

1 2	Specifications

Warranted Characteristics

Warranted characteristics are described in terms of quantifiable performance limits that are warranted. This subsection lists only warranted characteristics.

NOTE

Performance

Conditions

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.

The electrical characteristics found in these tables of warranted characteristics apply when the oscilloscope has been adjusted at an ambient temperature between +20_4C and +30_4C, has had a warm5up period of at least 20 minutes, and is operating at an ambient temperature between -10_4C and +55_4C (unless otherwise noted).

Table.101:/Warranted Characteristics 1 Signal Acquisition System

Name	Description
Accuracy, DC Voltage Measurement,	Measurement Type	DC Accuracy
Average Acquisition Mode	Average of ≥ 16 waveforms	±(2.0% |(reading -
		Net Offset)| + Offset
		Accuracy + 0.1 div)
	Delta volts between any two av5	±(2.0% |reading| + 0.15 div
	erages of ≥ 16 waveforms ac5	+ 0.3 mV)
	quired under the same setup
	and ambient conditions
Accuracy, DC Gain, Sample or	±2%
Average Acquisition Modes
Pulse Response, Peak Detect and	Sec/Div Setting	Minimum Pulse Width
Envelope Mode	5 s/div - 25 s/div	10 ns

TDS 310:410 s/div - 10 ns/div TDS 320:410 s/div - 5 ns/div TDS 350:410 s/div - 2.5 ns/div

The greater of 10 ns or

.02 sec/div setting

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Warranted Characteristics

Table5171:6Warranted Characteristics 8 Signal Acquisition System (Cont.)

Name	Description
Accuracy, Offset	Volts/Div Setting	Offset Accuracy
	2 mV/div - 99.5 mV/div	±(0.4% |Net Offset1|
		+ 3 mV + 0.1 div V/div setC
		ting)
	100 mV/div - 995 mV/div	±(0.4% |Net Offset1|
		+ 30 mV + 0.1 div V/div setC
		ting)
	1 V/div - 10 V/div	±(0.4% |Net Offset1|
		+ 300 mV + 0.1 div V/div setC
		ting)
Analog Bandwidth, DC Coupled	TDS 310:ADC - ≥ 50 MHz
	TDS 320:ADC - ≥ 100 MHz
	TDS 350:ADC - ≥ 200 MHz; DC - ≥ 180 MHz for 2 mV/div
Cross Talk (Channel Isolation)	≥ 100:1 at 50 MHz with equal Volts/Div settings on each channel
Input Impedance, DCCCoupled	1 MW ±1% in parallel with 20 pF ±2.0 pF
Input Voltage, Maximum	±400 V (DC + peak AC); derate at 20 dB/decade above 100 kHz to
	13 V peak AC at 3 MHz and above
Lower Frequency Limit, AC Coupled2	≤10 Hz

1Net Offset = Offset - (Position × Volts/Div). Net offset is the voltage level at the center of the A7D converter dynamic range. Offset Accuracy is the accuracy of this voltage level.

2The AC Coupled Lower Frequency Limits are reduced by a factor of 10 when 10X, passive probes are used.

Table5172:6Warranted Characteristics 8 Time Base System

Name	Description
Accuracy, Long Term Sample Rate	±100 ppm over any ≥ 1 ms interval
and Delay Time
Accuracy, Delta Time Measure7	For singleCshot acquisitions using sample acquisition mode and a
ments1, 2	bandwidth limit setting of FULL:
	BB±(1 WI + 100 ppm |Reading| + 0.6 ns)
	For repetitive acquisitions using average acquisition mode with
	≥ 16 averages and a bandwidth limit setting of FULL:
	BB±(1 WI + 100 ppm |Reading| + 0.4 ns)

1For input signals ≥ 5 divisions in amplitude and a slew rate of ≥ 2.0 divisions/ns at the delta time measurement points. Signal must be acquired at a volts/division setting ≥ 5 mV/division.

2The WI (waveform interval) is the time between the samples in the waveform record. Also, see the footnotes for Sample Rate Range and Equivalent Time or Interpolated Waveform Rates in Table 1711 on page 1712.

1 4	Specifications

		Warranted Characteristics
Table1133:2Warranted Characteristics 4 Triggering System
Name	Description
Accuracy, Trigger Level, DC Coupled	Trigger Source	Sensitivity
	CH1 or CH2	±(3% of |Setting - Net Offset1|
		+ 0.2 div volts/div setting +
		Offset Accuracy)
	External	±(6% of |Setting| + 20 m		)
	External/10	±(6% of |Setting| 200 m		)
Sensitivity, Edge3Type Trigger, DC	Trigger Source	Sensitivity
Coupled	CH1 or CH2	TDS 310: 0.35 division from DC
		to 20 MHz, increasing to 1 div at
		50 MHz
		TDS 320: 0.35 division from DC
		to 50 MHz, increasing to 1 div at
		100 MHz
		TDS 350: 0.35 division from DC
		to 50 MHz, increasing to 1 div at
		200 MHz
	External	TDS 310: 50 m from DC to
		20 MHz, increasing to 150 m			at
		50 MHz
		TDS 320: 50 m from DC to
		50 MHz, increasing to 150 m			at
		100 MHz
		TDS 350: 50 m from DC to
		50 MHz, increasing to 150 m			at
		200 MHz
	External/10	TDS 310: 500 m from DC to
		20 MHz, increasing to 1.5		at
		50 MHz
		TDS 320: 500 m from DC to 50
		MHz, increasing to 1.5	at 100
		MHz
		TDS 350: 500 m from DC to 50
		MHz, increasing to 1.5	at
		200 MHz
Input Impedance, External Trigger	1 MW ±2% in parallel with 20 pF ±2 pF
Maximum Input oltage,	±400 (DC + peak AC); derate at 20 dB/decade above 100 kHz to
External Trigger	13 peak AC at 3 MHz and above

1Net Offset = Offset - (Position Volts/Div). Net Offset is the voltage level at the center of the A3D converter dynamic range. Offset Accuracy is the accuracy of this voltage level.

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Warranted Characteristics

	Table5174:6Power Requirements
Name	Description
Source Voltage and Frequency	90 to 132 VACRMS, continuous range, for 47 Hz through 440 Hz
	132 to 250 VACRMS, continuous range, for 47 Hz through 63 Hz
Power Consumption	≤65 Watts (120 VA)
Table5175:6Warranted Characteristics 8 Environmental, Safety, and Reliability
Name	Description
Atmospherics	Temperature:
	-10_ C to +55_ C, operating;
	-51_ C to +71_ C, non@operating
	Relative humidity:
	to 95%, at or below +40_ C; to 75%, +41_ C to +55_ C
	Altitude:
	To 15,000 ft (4570 m), operating;
	to 40,000 ft (12190 m), non@operating
Dynamics	Random vibration:
	0.31 g RMS, from 5 to 500 Hz, 10 minutes each axis, operating;
	2.46 g RMS, from 5 to 500 Hz, 10 minutes each axis,
	non@operating
Emissions1	Meets or exceeds the requirements of the following standards:
	EN 50081-1 European Community Requirements
	EN 55022 radiated emissions
	EN 55022 Class B conducted emissions
	EN 60555-2 power harmonics
	VFG 0243
	FCC Rules and Regulations, 47 CFR, Part 15, Subpart B, Class A
Susceptibility2	TDS 310 and TDS 320: ≤±0.2 division waveform displacement, or
	≤0.4 division increase in p@p noise.

TDS 350: ≤±0.2 division waveform displacement, or ≤0.4 division increase in p@p noise below 200 MHz. ≤±0.3 division waveform dis@ placement, or ≤±0.6 division increase in p@p noise from 200 MHz to 500 MHz.

The instruments are subjected to the EMI specified in the following standards:

EN 50082-1 European Community Requirements

IEC 801-3 radiated susceptibility

IEC 801-4 fast transients

IEC 801-5 AC surge

1To maintain emission requirements when connecting to the I/O interface of this oscilloscope, use only a high7quality, double7shielded (braid and foil) cable. The cable shield must have low impedance connections to both connector housings. The VGA cable must also have ferrite cores at either end. Acceptable cables are listed in Table 776 on page 774.

2Susceptibility test run with both channel inputs terminated with grounding caps, both channels set to 2 mV/Div, DC Coupling, the trigger source set to Line, the Acquisition Mode set to Peak Detect, and the time base set to 25 s/Div.

1 6	Specifications

Typical Characteristics

Typical characteristics are described in terms of typical or average
performance. Typical characteristics are not warranted.
Table5176:6Typical Characteristics 8 Signal Acquisition System
Name	Description
Accuracy, DC Gain, Envelope	±3% for sec/div settings from 5 Sec/Div to 25 sec/div;
Acquisition Mode	TDS 310:?±2% for sec/div settings from 10 s/div to 10 ns/div;
	TDS 320:?±2% for sec/div settings from 10 s/div to 5 ns/div;
	TDS 350:?±2% for sec/div settings from 10 s/div to 2.5 ns/div
Accuracy, DC Voltage Measurement,	Measurement Type		DC Accuracy
Sample Acquisition Mode	Any Sample		±(2.0% (|reading - Net
			@Offset1|) + Offset Accuracy
			@+ 0.13 div + 0.6 mV)
	Delta Volts between any two samA		±(2.0% |reading| + 0.26 div
	ples2 acquired under the same setA		@+ 1.2 mV)
	up and ambient conditions
Frequency Limit, Upper, 20 MHz	20 MHz
Bandwidth Limited
Step Response Settling Error	Volts/Div Setting	Step	Settling Error (%)3
		Amplitude
			100 ns	20 ms
	2 mV/div - 99.5 mV/div	≤2 V	≤1.0	≤0.1
	100?mV/div> -	≤20 V	≤1.5	≤0.2
	995 mV/div
	1 V/div - 10 V/div	≤200 V	≤2.5	≤0.2
Common Mode Rejection Ratio	100:1 at 60 Hz, reducing to 20:1 at 50 MHz, with equal Volts/Div and
(CMRR)	Coupling settings on each channel.

1Net Offset = Offset - (Position × Volts/Div). Net Offset is the voltage level at the center of the A7D converter dynamic range. Offset Accuracy is the accuracy of this voltage level.

2The samples must be acquired under the same setup and ambient conditions.

3The values given are the maximum absolute difference between the value at the end of a specified time interval after the mid7level crossing of the step, and the value one second after the mid7level crossing of the step, expressed as a percentage of the step amplitude.

TDS 310, TDS 320 & TDS 350 Service Manual

1 7

Typical Characteristics

Table:1<7:;Typical Characteristics = Triggering System

Name	Description
Error, Trigger Position, Edge Triggering	Acquire Mode	Trigger<Position Error1,2
	Sample, Average	±(1 WI + 2 ns)
	Peak Detect, Envelope	±(2 WI + 2 ns)
Sensitivity, Video@Type Trigger	Source	Typical Sensitivity
	CH1 or CH2	0.6 division of video sync signal
	External	75 mV of video sync signal
	External/10	750 mV of video sync signal
Lowest Frequency for Successful Op@	50 Hz
eration of •Set Level to 50%" Function
Sensitivity, Edge Type Trigger, Not DC	Trigger Coupling	Typical Signal Level for Stable Trig<
Coupled3		gering
	AC	Same as DC@coupled limits4 for frequen@
		cies above 60 Hz. Attenuates signals
		below 60 Hz.
	Noise Reject	Three and one half times the DC@
		coupled limits.4
	High Frequency Reject	One and one half times times the DC@
		coupled limits4 from DC to 30 kHz. At@
		tenuates signals above 30 kHz.
	Low Frequency Reject	One and one half times the DC@coupled
		limits4 for frequencies above 80 kHz.
		Attenuates signals below 80?kHz.

1The trigger position errors are typically less than the values given here. These values are for triggering signals having a slew rate at the trigger point of ±0.5 division/ns.

2The waveform interval (WI) is the time between the samples in the waveform record. Also, see the footnote for the characteristics

Sample Rate Range and Equivalent Time or Interpolated Waveform Rates in Table 1<11 on page 1<12.

3The minimum sensitivity for obtaining a stable trigger. A stable trigger results in a uniform, regular display triggered on the selected slope. The trigger point must not switch between opposite slopes on the waveform, and the display must not •roll" across the screen on successive acquisitions. The TRIG'D LED stays constantly lighted when the SEC/DIV setting is 2 ms or faster but may flash when the SEC/DIV setting is 10 ms or slower.

4See the characteristic Sensitivity, Edge Type Trigger, DC Coupled in Table 1<3, which begins on page 1<5.

Table:1<8:;Typical Characteristics = Probe Compensator Output

Name	Description
Output Voltage and Frequency,	Characteristic
Probe Compensator	Voltage	5.0 V (low@high) into a 1?MW load
	Frequency	1 kHz

1 8	Specifications

Typical Characteristics

Table(1*9:)Typical Characteristics + Data Handling

Name	Description
Time, Data Retention, Nonvolatile	≥ 5 Years
Memory1,2

1The time that reference waveforms, stored setups, and calibration constants are retained when there is no power to the oscilloscope.

2Data is maintained by a lithium poly*carbon monofluoride battery.

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1 9

Typic l Ch r ct ristics

1 10	Sp cific tions

Nominal Traits

N/-*.", 42"*43 "2& %&3$2*#&% 53*.( 3*-0,& 34"4&-&.43 /' '"$4 35$) "3 •T7/, *%&.4*$"," '/2 4)& 42"*4 •I.054 C)"..&,3, N5-#&2 /'," 2"4)&2 4)". *. 4&2-3 /' ,*-*43 4)"4 "2& 0&2'/2-".$& 2&15*2&-&.43

Table91;10::Nominal Traits < Signal Acquisition System

Name	Description
B".%7*%4) S&,&$4*/.3	2 MHz ".% FULL
D*(*4*z&23, N5-#&2 /'	T7/, *%&.4*$",, %*(*4*z&% 3*-5,4".&/53,y
D*(*4*z&% B*43, N5-#&2 /'	8 #*431
I.054 C)"..&,3, N5-#&2 /'	T7/, *%&.4*$",, $",,&% CH ".% CH 2
I.054 C/50,*.(	DC, AC, /2 GND
R".(&3, O''3&4, A,, C)"..&,3	Volts/Div Setting	Offset Range
	2 -V %*6 - 99 -V %*6	± V
	-V %*6 - 99 -V %*6	± V
	V %*6 - V %*6	± V
R".(&, P/3*4*/.	± %*6*3*/.3
R".(&, S&.3*4*6*4y2	2 -V %*6 4/ V %*6
R*3& T*-&	TDS 3 : .3
	TDS 32 : 3 .3
	TDS 3 : .3
T&+P2/#& I.4&2'"$&	L&6&, /.& 02/#& $/%*.(

1Displayed vertically with 25 digitization levels (DLs) per division and 10.24 divisions dynamic range with zoom off. A DL is the smallest voltage level change that the 8;bit A;D Converter can resolve, with the input scaled to the volts/division setting of the channel used. Expressed as a voltage, a DL is equal to 1/25 of a division times the volts/division setting.

2The sensitivity ranges from 2 mV/div to 10 V/div in a 1-2-5 sequence of coarse settings. Between consecutive coarse settings, the sensitivity can be finely adjusted with a resolution of 1% of the more sensitive setting. For example, between 50 mV/div and 1009mV/div, the volts/division can be set with 0.5 mV resolution.

TDS 310, TDS 320 & TDS 350 Service Manual

1 11

Nominal Traits

Table,1.11:-Nominal Traits / Time Base System
Name	Description
Range, Sample9Rate1,2	TDS 310: 10 Samples/s to 200 MSamples/s in a 1-2-5 sequence
	TDS 320: 10 Samples/s to 500 MSamples/s in a 1-2-5 sequence
	TDS 350: 10 Samples/s to 1 GSamples/s in a 1-2-5 sequence
Range, Seconds/Division	TDS 310: 10 ns/div to 5 s/div in a 1-2.5-5 sequence
	TDS 320: 5 ns/div to 5 s/div in a 1-2.5-5 sequence
	TDS 350: 2.5 ns/div to 5 s/div in a 1-2.5-5 sequence
Range, Time Base Delay Time	16.5 ns to 50 seconds
Record Length	1,000 samples

1The range of real.time rates, expressed in 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

2The Waveform Rate (WR) is the equivalent sample rate of a waveform record. For a waveform record acquired by real.time sampling of a single acquisition, the waveform rate is the same as the real.time sample rate; for a waveform created by interpolation of real.time samples from a single acquisition or by equivalent.time sampling of multiple acquisitions, the waveform rate is faster than the real time sample rate. For all three cases, the waveform rate is 1/(Waveform Interval) for the waveform record, where the waveform interval (WI) is the time between the samples in the waveform record.

Table,1.12:-Nominal Traits / Triggering System

Name	Description
Range, Hold Off	500 ns minimum to 10 seconds maximum
Ranges, Trigger Level	Source	Range
	Any Channel	±12 divisions from center of screen
	External	±1.5 Volts
	External /10	±15 Volts
	Line	±300 Volts
Formats and Field Rates, Video Trigger	Triggers from sync9negative composite video, 525 to 625 lines,
	50 Hz to 60 Hz, interlaced or noninterlaced systems with scan rates
	from 15 kHz to 65 kHz - such as NTSC, PAL, or SECAM
TekProbe Interface, External Trigger	Level one probe coding

1 12	Specifications

		Nominal Traits
	Table&1(13:'Nominal Traits ) Display System
	Name	Description
	CRT Type	7Binch 17.95 cm diagonal magnetic deflection; horizontal rasterB
		scan; P31 green phosphor
	Video Display Resolution	640 pixels horizontally by 480 pixels vertically
		Display area is 5.04 inch 12.92 cm horizontally by 3.78 inch
		9.69 cm vertically
	Waveform Display Graticule	A single graticule 401 501 pixels 8 10 divisions with divisions
		that are approximately 1 cm by 1 cm
	Intensity Levels	Dim and Bright with adjustable Overall Intensity and Contrast
	Table&1(14:'Nominal Traits ) I/O Interface Option
	Name	Description
	GPIB	Part of Option 14 I/O interface or TD3F14A I/O interface field upB
		grade kit; complies with IEEE Std 488-1987
	RSB232	Part of Option 14 I/O interface or TD3F14A I/O interface field upB
		grade kit; a 9Bpin male DTE RSB232 interface that complies with
		EIA/TIA 574-90
	Centronics	Part of Option 14 I/O interface or TD3F14A I/O interface field upB
		grade kit; a 25Bpin IBM PCBtype parallel printer interface that comB
		plies electrically with Centronics C332-44 Rev A
	Video Signal Output	DBB9 rear panel Video connector; nonBinterlaced with levels that
	Option 14 Only TDS310 and	comply with ANSI RS343A
	TDS 350 B020100 and above;	VGA compatible at a 30.6 kHz sync rate
	TDS 320 B030100 and above
	Power Supply Printer	Power supply connector to supply power to the Option 3P Printer
	Option 14 Only TDS310 and	Pack
	TDS 350 B020100 and above;
	TDS 320 B030100 and above
	Table&1(15:'Nominal Traits ) Power Distribution System
	Name	Description
	Fuse Rating	5 mm × 20 mm UL 198 G : 3 A Slow 250 V IEC 127 : 3.15 A T
		250AV

TDS 310, TDS 320 & TDS 350 Service Manual

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