Tektronix TX3, TX1 Service Manual

Service Manual

TX1 and TX3

True RMS Digital Multimeter

070-9893-01

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.

Copyright Tektronix, Inc. All rights reserved.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved.

Printed in the U.S.A.

Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070±1000

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY

Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment. If a 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; c) to repair any damage or malfunction caused by the use of non-Tektronix supplies; or d) 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 IN LIEU OF ANY OTHER WARRANTIES, EXPRESS 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.

Service Assurance

If you have not already purchased Service Assurance for this product, you may do so at any time during the product's warranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs.

Repair Protection extends priority repair services beyond the product's warranty period; you may purchase up to three years of Repair Protection.

Calibration Services provide annual calibration of your product, standards compliance and required audit documentation, recall assurance, and reminder notification of scheduled calibration. Coverage begins upon registration; you may purchase up to five years of Calibration Services.

Service Assurance Advantages

Priced well below the cost of a single repair or calibration

Avoid delays for service by eliminating the need for separate purchase authorizations from your company

Eliminates unexpected service expenses

For Information and Ordering

For more information or to order Service Assurance, contact your Tektronix representative and provide the information below. Service Assurance may not be available in locations outside the United States of America.

Name	VISA or Master Card number and expiration
Company	date or purchase order number
Address	Repair Protection (1,2, or 3 years)
City, State, Postal code	Calibration Services (1,2,3,4, or 5 years)
Country	Instrument model and serial number
Phone	Instrument purchase date

Table of Contents

General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	v
Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	vii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	ix
Manual Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	ix
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	x
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	x
Contacting Tektronix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	x
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xi
Service Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xi
Service Offerings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xi
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	xii
Specifications
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1±1
Operating Information
Operating Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±1
Front and Rear Panel Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±1
Display Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±3
Measurement Function Knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±4
Input Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±5
Button and Softkey Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±5
Softkeys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±8
Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±8
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±10
Theory of Operation
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3±1
Performance Verification
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±1
Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±2
Set Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±3
Verification Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±4
TX1 Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±11
TX3 Test Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±17
Adjustment Procedure
Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5±1
Options
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6±1

TX1 and TX3 True RMS Digital Multimeter Service Manual

i

Table of Contents

Maintenance

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±1
Related Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±1
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±2
Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±3
Disassembly and Assembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±18
Repackaging Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±22
Replaceable Parts

Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±1
Parts Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±1
Using the Replaceable Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±2

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Table of Contents

List of Figures

Figure 2±1: Front panel overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±1
Figure 2±2: Rear panel overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±2
Figure 2±3: Display indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±3
Figure 2±4: Measurement function knob . . . . . . . . . . . . . . . . . . . . . . .	2±4
Figure 2±5: Input connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±5
Figure 2±6: Battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	2±10
Figure 3±1: Simple block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	3±2
Figure 7±1: Opening and closing the case . . . . . . . . . . . . . . . . . . . . . . .	7±6
Figure 7±2: Internal assembly removal and installation . . . . . . . . . . .	7±8
Figure 7±3: Battery holder removal and installation . . . . . . . . . . . . . .	7±9
Figure 7±4: LCD bezel removal and installation . . . . . . . . . . . . . . . . .	7±10
Figure 7±5: LCD removal and installation . . . . . . . . . . . . . . . . . . . . . .	7±11
Figure 7±6: Circuit board tabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±12
Figure 7±7: Circuit board removal and installation . . . . . . . . . . . . . .	7±13
Figure 7±8: Light diffuser removal and installation . . . . . . . . . . . . . .	7±14
Figure 7±9: Function knob removal . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±16
Figure 7±10: Function knob and switch keypad installation . . . . . . .	7±17
Figure 7±11: Troubleshooting start . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±19
Figure 7±12: Troubleshooting two . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±20
Figure 7±13: Troubleshooting three . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±21
Figure 8±1: Exploded view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±5

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iii

Table of Contents

List of Tables

Table 1±1: General characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1±1
Table 1±2: DC voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . .	1±2
Table 1±3: DC voltage range, resolution, and accuracy . . . . . . . . . . .	1±2
Table 1±4: AC voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . .	1±2
Table 1±5: AC voltage range, resolution, and accuracy . . . . . . . . . . .	1±3
Table 1±6: DC current characteristics . . . . . . . . . . . . . . . . . . . . . . . . .	1±4
Table 1±7: DC current range, resolution, and accuracy . . . . . . . . . . .	1±4
Table 1±8: AC current characteristics . . . . . . . . . . . . . . . . . . . . . . . . .	1±4
Table 1±9: AC current range, resolution, and accuracy . . . . . . . . . . .	1±5
Table 1±10: Resistance ( ) characteristics . . . . . . . . . . . . . . . . . . . . . .	1±5
Table 1±11: Resistance range, resolution, and accuracy . . . . . . . . . . .	1±6
Table 1±12: Continuity characteristics . . . . . . . . . . . . . . . . . . . . . . . . .	1±6
Table 1±13: Diode test characteristics . . . . . . . . . . . . . . . . . . . . . . . . .	1±7
Table 1±14: Capacitance range, resolution, and accuracy
(5,000 counts only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	1±7
Table 1±15: Frequency characteristics, resolution, and accuracy . . .	1±7
Table 1±16: Frequency voltage range . . . . . . . . . . . . . . . . . . . . . . . . . .	1±8
Table 1±17: Duty factor characteristics . . . . . . . . . . . . . . . . . . . . . . . .	1±8
Table 1±18: Temperature characteristics . . . . . . . . . . . . . . . . . . . . . . .	1±8
Table 1±19: 1ms peak hold characteristics . . . . . . . . . . . . . . . . . . . . . .	1±8
Table 1±20: Physical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .	1±9
Table 1±21: Environmental characteristics . . . . . . . . . . . . . . . . . . . . .	1±9
Table 1±22: Certifications and compliances . . . . . . . . . . . . . . . . . . . . .	1±9
Table 2±1: Setup prompts, definitions, and default values . . . . . . . . .	2±9
Table 4±1: Performance verification checks . . . . . . . . . . . . . . . . . . . .	4±1
Table 4±2: Test equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±2
Table 4±3: TX1 test record results . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±11
Table 4±4: TX3 test record results . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4±15
Table 7±1: Relative susceptibility to static-discharge damage . . . . . .	7±3
Table 7±2: List of tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7±5
Table 8±1: Parts list column descriptions . . . . . . . . . . . . . . . . . . . . . . .	8±2
Table 8±2: Manufacturers cross index . . . . . . . . . . . . . . . . . . . . . . . . .	8±3
Table 8±3: Replaceable parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±4
Table 8±4: Standard accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±6
Table 8±5: Optional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8±6

iv	TX1 and TX3 True RMS Digital Multimeter Service Manual

General Safety Summary

	Review the following safety precautions to avoid injury and prevent damage to
	this product or any products connected to it. To avoid potential hazards, use this
	product only as specified.
	Only qualified personnel should perform service procedures.
To Avoid Fire or	Connect and Disconnect Properly. Do not connect or disconnect probes or test
Personal Injury	leads while they are connected to a voltage source.
	Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
	and markings on the product. Consult the product manual for further ratings
	information before making connections to the product.
	Do not apply a potential to any terminal, including the common terminal, that
	exceeds the maximum rating of that terminal.
	Replace Batteries Properly. Replace batteries only with the proper type and rating
	specified.
	Do Not Operate Without Covers. Do not operate this product with covers or panels
	removed.
	Use Proper Fuse. Use only the fuse type and rating specified for this product.
	Avoid Exposed Circuitry. Do not touch exposed connections and components
	when power is present.
	Do Not Operate With Suspected Failures. If you suspect there is damage to this
	product, have it inspected by qualified service personnel.
	Do Not Operate in Wet/Damp Conditions.
	Do Not Operate in an Explosive Atmosphere.
	Keep Product Surfaces Clean and Dry.
Symbols and Terms	Terms in this Manual. These terms may appear in this manual:
	WARNING. Warning statements identify conditions or practices that could result
	in injury or loss of life.
	CAUTION. Caution statements identify conditions or practices that could result in
	damage to this product or other property.

TX1 and TX3 True RMS Digital Multimeter Service Manual

v

General Safety Summary

Terms on the Product. These terms may appear on the product:

DANGER indicates an injury hazard immediately accessible as you read the marking.

WARNING indicates an injury hazard not immediately accessible as you read the marking.

CAUTION indicates a hazard to property including the product.

Symbols on the Product. The following symbols may appear on the product:

CAUTION	WARNING	Double
Refer to Manual	High Voltage	Insulated

vi	TX1 and TX3 True RMS Digital Multimeter Service Manual

Service Safety Summary

Only qualified personnel should perform service procedures. Read this Service

Safety Summary and the General Safety Summary before performing any service procedures.

Do Not Service Alone. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present.

Use Care When Servicing With Power On. Dangerous voltages or currents may exist in this product. Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components.

To avoid electric shock, do not touch exposed connections.

TX1 and TX3 True RMS Digital Multimeter Service Manual

vii

Service Safety Summary

viii	TX1 and TX3 True RMS Digital Multimeter Service Manual

Preface

This section contains information needed to properly use this manual to service the TX1 and TX3 True RMS Digital Multimeters as well as general information critical to safe and effective servicing of multimeters.

Manual Structure

This manual is divided into chapters, such as Specifications and Theory of Operation. Further, it is divided into subsections, such as Product Description and Disassembly and Assembly Procedures.

Sections containing procedures also contain introductions to those procedures. Be sure to read these introductions because they provide information needed to do the service correctly and efficiently. The following is a brief description of each manual chapter.

Specifications contains a product description and tables of the characteristics and descriptions that apply to it.

Operating Information includes general information and operating instructions at the level needed to safely service the multimeters. A statement of the service strategy is in this section.

Theory of Operation contains circuit descriptions down to the module level.

Performance Verification contains a collection of procedures for confirming that the multimeters function properly and meet warranted limits.

Adjustment Procedure informs you how to obtain calibration services.

Options lists the available options for the TX1 and TX3 meters.

Maintenance contains information and procedures for doing preventive and corrective maintenance. This includes cleaning instructions and disassembly and assembly instructions.

Replaceable Parts includes a table of all replaceable parts, their descriptions, and their Tektronix part numbers.

TX1 and TX3 True RMS Digital Multimeter Service Manual

ix

Preface

Manual Conventions

This manual uses certain conventions which you should become familiar with before doing service.

Safety Symbols and terms related to safety appear in the Safety Summary found at the beginning of this manual.

Symbols Refer to the Safety section in this manual to learn about the symbols used in this manual.

Related Manuals

The TX1 and TX3 digital multimeters are shipped with a user manual. Refer to the user manual for detailed operating instructions.

Contacting Tektronix

Product	For application-oriented questions about a Tektronix measure-
Support	ment product, call toll free in North America:
	1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
	6:00 a.m. ± 5:00 p.m. Pacific time
	Or, contact us by e-mail:
	[e-mail]
	For product support outside of North America, contact your
	local Tektronix distributor or sales office.
Service	Contact your local Tektronix distributor or sales office. Or, visit
Support	our web site for a listing of worldwide service locations.
	http://www.tektronix.com
For other	In North America:
information	1-800-TEK-WIDE (1-800-835-9433)
	An operator will direct your call.
To write us	Tektronix, Inc.
	P.O. Box 1000
	Wilsonville, OR 97070-1000

x	TX1 and TX3 True RMS Digital Multimeter Service Manual

Introduction

Service Strategy

This manual contains all the information needed for periodic maintenance of the

TX1 and TX3 True RMS Digital Multimeters.

All replaceable parts are listed in Table 8±3 Replaceable parts list. To remove and replace any parts, follow the instructions in Dissasembly and Assembly Procedures found in Chapter 7.

Service Offerings

Tektronix provides service to cover repair under warranty as well as other services that may provide a cost-effective answer to your service needs.

Whether providing warranty repair service or any of the other services listed below, Tektronix service technicians, trained on Tektronix products, are best equipped to service your TX1 and TX3 True RMS Digital Multimeters.

Tektronix technicians are apprised of the latest information on improvements to the product as well as the latest options to the product.

Warranty Repair Service Tektronix warrants this product for three years from date of purchase. (The warranty appears after the title page and copyright page in this manual.) Tektronix technicians provide warranty service at most Tektronix service locations worldwide. Your Tektronix product catalog lists all service locations worldwide.

Repair or Calibration Service

The following services may be purchased to tailor repair and/or calibration of your TX1 and TX3 True RMS Digital Multimeters to fit your requirements.

At-Depot Service. Tektronix offers several standard-priced adjustment (calibration) and repair services:

A single repair and/or adjustment.

Calibrations using equipment and procedures that meet the traceability standards specific to the local area.

Annual maintenance agreements that provide for either calibration and repair or calibration only.

TX1 and TX3 True RMS Digital Multimeter Service Manual

xi

Introduction

Of these services, the annual maintenance agreement offers a particularly cost-effective approach to service for many owners. Such agreements can be purchased to span several years.

Self Service Tektronix supports self service repair by providing replaceable parts. See the Replaceable Parts chapter for a list of all replaceable parts.

Before You Begin

This manual is for servicing the TX1 and TX3 True RMS Digital Multimeters. To prevent injury to yourself or damage to the meter, do the following tasks before you attempt service:

Read the Safety Summary found at the beginning of this manual.

Read Service Strategy in this section.

When using this manual for servicing, be sure to read and follow all warnings, cautions, and notes.

xii	TX1 and TX3 True RMS Digital Multimeter Service Manual

Specifications

Specifications

All specifications are warranted, unless noted as typical, for the rated temperature range of 23_ C ± 5_ C at less than 80% relative humidity.

Table 1±1: General characteristics

Characteristics	Description
LCD display digits	3$5 (default) or 4$5
Display counts	5,000 (default) or 50,000
Bargraph	20 segment, updated 20 times per second
Memory locations	TX1: 10, TX3: 30
Out of range indicator	OL: overrange
	Ur: underrange
Low voltage indicator	Battery symbol shows on LCD at 2.0 V.
	Meter powers down at 1.5 V.
Battery life	100 hours continuous use with backlight off (typical)
Auto-off	Adjustable, 30 minute default
Power source	Two AA 1.5 V alkaline batteries (IEC LRG or ANSI/NEDA
	15A)
Maximum input voltage be-	1000 VRMS Installation Category III (CAT III) 1
tween terminals and between
terminals and earth
Maximum open circuit voltage	600 VRMS CAT III
when utilizing the A terminal
Overload protection, V terminal	1000 VRMS (1500 Vpk) for all functions
F1 fuse protection	15 A (1000 V) fast
Backlight	Green LEDs

1 If meter is exposed to water, have it inspected by qualified service personnel.

TX1 and TX3 True RMS Digital Multimeter Service Manual

1±1

Specifications

Table 1±2: DC voltage characteristics

Characteristic		Description
Settling time		3 readings (typical)
Reading rate		5,000 ct.: 4 readings per second
		50,000 ct.: 1 reading per second
Rejection ratio
	Common mode	120 dB at DC or 50 Hz or 60 Hz
	Normal mode	60 dB at 50 Hz or 60 Hz
Input impedance		10 M (typical)

Table 1±3: DC voltage range, resolution, and accuracy

		Resolution		Accuracy 1
	Range	5,000 counts	50,000 counts	TX1	TX3
	0.5 V	100 V	10 V	± (0.07% + 1	± (0.05% + 1
				count)	count)
	5 V	1 mV	100 V
	50 V	10 mV	1 mV
	500 V	100 mV	10 mV
	1000 V	1 V	100 mV
	Temperature coefficient			Add (0.005% + 0.1 ct.)/°C to accuracy
				beyond rated temperature range.
	1 Accuracy in 50,000-count mode is % + 10 counts.

Table 1±4: AC voltage characteristics

Characteristic	Description
Input impedance	10 M in parallel with <100 pF (typical)
Settling time	4 readings (typical)
Reading rate	5,000 ct.: 4 readings per second
	50,000 ct.: 1 reading per second
Common mode	60 dB at DC to 60 Hz
rejection ratio
Crest factor, maximum	Full scale: 3
	Half scale: 6
AC+DC 1 total RMS volts	AC (RMS) accuracy + 0.1% + 1 count
accuracy

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Specifications

Table 1±4: AC voltage characteristics (cont.)

Characteristic		Description
AC DC 1 dual display accuracy		DC Accuracy + 0.05% + 1 count
		AC RMS Accuracy + 0.1% + 1 count
Upper display frequency
(5,000 counts)
	Accuracy	±(0.002% + 1 count) for 20 Hz to 20 kHz
	Sensitivity	10% of selected voltage range
dB reference 2		1 VRMS (adjustable)
dBm reference 2		775 mV across 600 (1 mW)

15,000-count mode only.

2dB readout = 20 log (main display readout/ref), where ref = 1 V is the default. dBm readout = 10 log (main display readout2/R), where R=600 .

Table 1±5: AC voltage range, resolution, and accuracy

		Resolution		Accuracy 1
	Range	5,000 counts	50,000 counts	TX1	TX3
	0.5 V	100 V	10 V	40 Hz ± 20 kHz:	40 Hz ± 20 kHz:
				± (0.6% + 2	± (0.4% + 2
	5 V	1 mV	100 V
				counts)	counts)
	50 V	10 mV	1 mV
	500 V 2	100 mV	10 mV
	1000 V 2	1 V	100 mV	40 Hz ± 10 kHz:	40 Hz ± 10 kHz:
				± (0.6% + 2	± (0.4% + 2
				counts)	counts)
	Temperature coefficient			AC: Add (0.03% + 0.1 ct.)/°C beyond
				rated temperature range.
				AC+DC: Add (0.06% + 0.1 ct.)/°C
				beyond rated temperature range.

1Accuracy in 50,000-count mode is % + 20 counts.

2For voltages 100 V, the maximum volts±Hz product is 10 MVHz.

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Table 1±6: DC current characteristics

Characteristics	Description
Burden voltage	5 mA to 5 A: 0.3 V max.
	10 A: 0.5 V max.
Percent 4-20 mA (calculated in	4 mA = 0%
50 mA range)	20 mA = 100%
Settling time	4 readings (typical)
Reading rate	5,000 ct.: 4 readings per second
	50,000 ct.: 1 reading per second

Table 1±7: DC current range, resolution, and accuracy

	Resolution		Accuracy
Range
	5,000 counts	50,000 counts	TX1		TX3
500 mA	100 nA	10 nA	± (0.2% + 4 counts) 1
5 mA	1 mA	100 nA	± (0.2% + 2 counts) 2
50 mA	10 mA	1 mA
500 mA	100 mA	10 mA
5 A	1 mA	100 mA	± (0.4% + 2 counts) 2
10 A	10 mA	1 mA	± (0.8% + 2 counts) 2
(15 A for
3 minutes)
Temperature coefficient			Add (0.05% + 0.1 ct.)/°C beyond rated
			temperature range.

1Accuracy in 50,000-count mode is % + 40 counts.

2Accuracy in 50,000-count mode is % + 20 counts.

Table 1±8: AC current characteristics

Characteristics		Description
Burden voltage		0.5 mA to 5 A: 0.9 V max.
		10 A: 1.0 V max.
AC+DC 1 Accuracy		AC RMS amps accuracy + DC amps accuracy
Upper display frequency
	Accuracy	±(0.002% + 1 count) for 20 Hz to 5 kHz
	Sensitivity	10% of range

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Specifications

Table 1±8: AC current characteristics (cont.)

Characteristics		Description
Settling time		4 readings (typical)
Reading rate		5,000 ct.: 4 readings per second
		50,000 ct.: 1 reading per second
1	5,000-count mode only.

Table 1±9: AC current range, resolution, and accuracy

	Resolution		Accuracy 1,2
Range	5,000 counts	50,000 counts	TX1	TX3
0.5 mA	100 nA	10 nA	40 Hz ± 1 kHz: ± (0.6% + 2 counts)
			>1 kHz ± 3 kHz: ± (1.0% + 2 counts)
5 mA	1 A	100 nA
			>3 kHz ± 5 kHz: ± (2.0% + 2 counts)
50 mA	10 A	1 A
500 mA	100 A	10 A
5 A	1 mA	100 A
10 A	10 mA	1 mA
(15 A for
3 minutes)
Temperature coefficient			Add (0.05% + 0.1 ct.)/°C beyond rated
			temperature range.

1Accuracy in 50,000-count mode is % + 20 counts.

2u5% of range.

Table 1±10: Resistance ( ) characteristics

Characteristics	Description
Update rate	5,000 ct.: 2 readings per second
	50,000 ct.: 1 reading per second
	50	M : 1 reading per second
Settling time	50	to 5 M range: 3 readings (typical)
	50	M range: 4 readings (typical)
Compliance voltages (typical)	0.6 V (50 and 500 range is 1.3 V)
Common mode rejection ratio	60 dB at DC, 50 Hz, or 60 Hz
Normal mode rejection ratio	20 dB at w50 Hz

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Specifications

Table 1±11: Resistance range, resolution, and accuracy

	Resolution		Accuracy
Range
	5,000 counts	50,000 counts	TX1		TX3
50	0.01 1	±±	± (0.1% + 10 counts)
500	0.1	0.01	± (0.1% + 4 counts) 2
5 k	1	0.1	± (0.1% + 2 counts) 3
50 k	10	1
500 k	100	10
5 M	1 k	100	± (0.4% + 4 counts) 2
50 M	10 k 1	±±	± (1.0% + 4 counts) 2
Temperature coefficient			50 to 500 k : Add (0.03% + 0.1
			ct.)/°C beyond rated temperature range.
			5 M to 50 M : Add (0.2% + 0.1 ct.)/°C
			beyond rated temperature range.

15,000 count mode only.

2Accuracy in 50,000-count mode is % + 40 counts.

3Accuracy in 50,000-count mode is % + 20 counts.

Table 1±12: Continuity characteristics

Characteristics	Description
Continuity threshold	Beeper sounds when resistance is 100 or less (typical)
Response time	t1 ms

Table 1±13: Diode test characteristics

Characteristics	Description
Test current (typical)	0.35 mA
Test voltage	2.8 V maximum, open circuit
Accuracy	± 1.0%

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Specifications

Table 1±14: Capacitance range, resolution, and accuracy (5,000 counts only)

		Accuracy 2
Range	Resolution 1	TX1		TX3
5 nF	1 pF	± (1.0% + 5 counts)		(using D mode)
50 nF	10 pF	± (1.0%	+ 3 counts) (using D mode)
500 nF	100 pF	± (1.0%	+ 3 counts)
5 mF	1 nF
50 mF	10 nF	± (3.0%	+ 3 counts)
500 mF	100 nF
5 mF	1 mF
50 mF	10 mF
Temperature coefficient		Add (0.05% + 0.1 ct.)/°C beyond rated
		temperature range.

15,000 count mode only.

2u1% of range.

Table 1±15: Frequency characteristics, resolution, and accuracy

Characteristics	Description
Signal coupling	AC
Minimum frequency	0.5 Hz
Maximum frequency	1 MHz
Accuracy	±(0.002%) + 1 count
Best resolution	10,000 count: 0.01 Hz
	100,000 count: 0.001 Hz
Temperature coefficient	Add 0.00004%/(°C)2 beyond rated temperature range.

Table 1±16: Frequency voltage range

Range	Sensitivity, 10 Hz - 100 kHz	Sensitivity, 1 MHz 1
500 mV	100 mV	±±
5 V	500 mV	2 V
50 V	5 V	20 V

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Table 1±16: Frequency voltage range (Cont.)

Range	Sensitivity, 10 Hz - 100 kHz	Sensitivity, 1 MHz 1
500 V	50 V	±±

1 For voltages u100 V, the maximum volts±Hz product is t10 MVHz.

Table 1±17: Duty factor characteristics

Characteristics	Description
Range	1 Hz to 100 kHz
Accuracy	±(0.1% + 0.05% per kHz) for 5 V input (logic signals only)
Signal coupling	DC
Resolution	0.1%
Sensitivity	30% of range

Table 1±18: Temperature characteristics

Characteristics		Description
Main display
	Range	±50_ C to +980_ C
	Accuracy	±3_C 1 (typical)
	Thermocouple type	K
Upper display
	Accuracy	± 3_C of ambient temperature (typical)

1 Use the water and ice offset calibration method on page 2±9 for accuracy to ±1.0 °C.

Table 1±19: 1ms peak hold characteristics

Characteristics		Description
Accuracy 1		Specified voltage or current measurement ±30 counts of the
		peak value of a single 1ms pulse.
1	5,000-count mode only.

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Specifications

Table 1±20: Physical characteristics

Characteristic		Description
Dimensions (H W D)		38 mm 88 mm 183 mm
		(without holster)
Weight (with batteries)		383 g (13.5 oz)
	With holster	539 g (1 lb 3 oz)

Table 1±21: Environmental characteristics

Characteristic		Description
Temperature
	Operating	±10 to +50_ C
	Non-operating (storage)	±40 to +60_ C
Humidity		±40 to +35_ C: t80%
		+35 to +40_ C: t70%
		+40 to +60_ C: t55%
Altitude
	Operating	2,000m (6,562 ft)
		For altitudes from 2,000 m up to 5,000 m (16,404 ft) derate
		voltage input to 600 VAC CAT III.
	Non-operating (storage)	12,300 m (40,354 ft)
Vibration
	Operating	2.66 gRMS, 5 to 500 Hz, 3 axes (10 minutes each)
	Non-operating	3.48 gRMS, 5 to 500 Hz, 3 axes (10 minutes each)

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Table 1±22: Certifications and compliances

Category	Standards or description
EC Declaration of Conformity	Meets intent of Directive 89/336/EEC for Electromagnetic
± EMC	Compatibility. Compliance was demonstrated to the following
	specifications as listed in the Official Journal of the European
	Union:
	EN 55011		Class A Radiated Emissions
	EN 50082-1 Immunity:
		IEC 801-2	Electrostatic Discharge Immunity
		IEC 801-3	RF Electromagnetic Field
			Immunity 1,2
	1	Add 25 counts (250 counts in 50,000 count mode) to
		the accuracy specifications when in the presence of
		an RF field as defined in IEC801±3.
	2	Amps DC: Add 60 counts (600 counts in 50,000 count
		mode) to the amps accuracy specifications when in
		the presence of an RF field as defined in IEC801±3.
Australia/New Zealand Decla-	Complies with EMC provision of Radiocommunications Act
ration of Conformity ± EMC	per the following standard(s):
	AS/NZS 2064.1/2 Industrial, Scientific, and Medical
	Equipment: 1992
EC Declaration of Conformity	Compliance was demonstrated to the following specification
± Low Voltage	as listed in the Official Journal of the European Union:
	Low Voltage Directive 73/23/EEC, amended by 93/69/EEC
	EN 61010-1/A2:1995
		Safety requirements for electrical equipment for
		measuring control, and laboratory use.
U.S. Nationally Recognized	UL3111-1 ± Standard for electrical measuring and test
Testing Laboratory Listing	equipment.
Canadian Certification	CAN/CSA C22.2 No. 1010.1
		Safety requirements for electrical equipment for
		measurement, control, and laboratory use.
Additional Compliance	IEC61010-1/A2:1995
		Safety requirements for electrical equipment for
		measurement, control, and laboratory use.

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