Tektronix DMM4020 DATASHEET

Digital Multimeters

Tektronix DMM4020 Data Sheet

Available Functions and Features

Volts, Ohms, and Amps Measure m ents

Diode and Continuity Testing

DMM4020

Features & Benefits

Key Performance Specifications

5.5 Digit Resolution

Basic VDC Accuracy of up to 0.015% (1 yr.)

200 mV to 1000 V Voltage Range, with up to 1 μV Resolution

200 μA to 10 A Current Range, with up to 1 nA Resolution

200 Ω to 100 MΩ Range, with up to 1 mΩ Resolution

CAT I 1000 V, CAT II 600 V

Frequency Me

2×4 Ohms 4-wire Measurement Technique

Dedicated DC Leakage Current M easurements

Six Dedicated Buttons for Fast Access to Instrument Setups

Limit Compare Mode for Pass/Fail Testing

Connectivi

Front 2×4 Measurement Inputs

RS-232 on Rear Panel for Quick PC Connectivity

Includes USB to RS-232 Interface Adapter Cable

Includes National Instrument’s LabVIEW SignalExpress™ TE Limited
Edition for Connecting Your Bench

3-year Warranty

asurements

ty

Data Sheet

Measurements with the Push of a Button

As the circuits in embedded system designs become more sophisticated,
you must measure a multitude of different parameters to validate your
design. The Tektronix DMM4020 5.5 digit bench multimeter offers a broad
range of functions in one easy-to-use instrument.

Typical multimeter measurements – volts, ohms, and amps – are made with
a basic VDC accuracy of up to 0.015%, ensuring you have the performance
you need for your design. You can also use the DMM4 020 to measure
frequency, and to perform continuity and diode tests. This allows you
to replace yo
instrument, saving bench space and cost.

Measure Nano

Measuring standby current in today’s energy-efficient designs requires
looking at very low currents, often in t he microamp or nanoamp range.
Using a traditional multimeter for this measurement can lead to inaccurate
results since they typically e mploy the shunt resistance technique for
measuring current.

The DMM4020 offers an improved method for measuring low currents. By
using a cur
current measurements with 1 nA of resolution and with minimal loading
affect on the circuit under test, giving results that reflect real-world operation
of the d evice.

ur counter, continuity tester, and DMM with one versatile

ampere Signals

rent-to-voltage op amp technique, the DMM4020 can make

Designed to Ma ke Your Work Easier

The DMM4020 multimeter is designed with the ease o f use and familiar
operation you expect from Tektronix.

Limit compare mode on the DMM4020.

Setup Buttons for Your Common Measurements

With six setup buttons on the front panel, you can s ave the settings for your
most common measurements. Simply set up the meter fo r a measurement,
then press sh
settings. Now each time you perform that measurement, you simply press
the appropriate setup key.

ift followed b y a setup button to save the measurement

Dual Display

With the unique dual display, you can measure two different parameters of
the same signal from one test connection .

Limit Compare

The limit compare mode provides pass/fail indicators to quickly show if a
test passes or fails to help eliminate mistakes, especially for results that
areclosetothelimit.

Simple and Accurate 4-wire Measurements

Patented split terminal jacks for the 2×4 ohms function allow you to perform
4-wire measurements using only two leads instead of four. Spe cial test lead
accessories are available to enable you to establish the connection. You get
excellent resolution and accuracy plus the convenience and ease of using a
single pa

ir of leads.

Intuitive Operation

Dedicated front-panel buttons provide fast access to frequently used

ns and parameters, reducing setup time. You no longer need to

functio
search through software menus to find the function you need.

Easy Conn

The RS-232 port on the back panel can be used to conn ect to your PC.
AUSBtoRS
DMM4020 for connecting to your P C’s USB port.

ectivity to Your PC

-232 interface adapter cable is included standard with the

2 www.tektronix.com/dmm

Digital Multimeters — Tektronix DMM4020

SignalExpress acquiring data from Tektronix DMM4020 and DPO3052.

Connect Your Bench for Intelligent Debug

Easily capture, save, and analyze mea surement results from your
multimeter with the special Tektronix Edition of National Instrument’s
LabVIEW SignalExpress™ software. Every DMM4020 multimeter ships
with a free copy of the Limited E dition version of SignalExpress for basic
instrument control, data logging, and analysis. The optional Professional
Edition offers over 200 built-in functions that provide additional signal
processing, advanced analysis, sweep ing, limit testing, and user-defined
step capabilities.

SignalExpress supports the range of Tektronix bench instruments*
enabling you to connect your entire test bench. You can then access the

1

,

press used to export DMM4020 data into Excel.

SignalEx

feature-rich tools packed into each instrument from one intuitive software
interface. This allows you to automate complex measurements requiring
multiple instruments, log data for an extended period of time, time correlate
data from multiple instruments, and easily capture and analyze your results,

your PC. Only Tektronix offers a connected test bench of intelligent

all from
instruments to simplify and speed debug of your complex design.

Performance You Can Count On

In addition to industry-leading service and support, every DMM4020
multimeter comes backed with a three-year standard warranty.

*1NI LabVIEW SignalExpress supports the following Tektronix instruments: MSO/DPO4000/3000/2000

Series oscilloscopes, TDS3000C/2000B/1000B Series oscilloscopes, AFG3000 Series arbitrary/function
generators, DMM4050/4040/4020 Series digital multimeters.

www.tektronix.com/dmm 3

Data Sheet

Characteristics

General Specifications

Vol t a g e

Characteristic

100V Setting
120V Setting
220V Setting
240V Setting
Frequency 47 Hz to 440 Hz
Power Consumption 15 VA peak (10 W average)

Dimensions

Dimension

Height 88 3.46
Width 217 8.56
Depth 297 11.7

Weight kg lb.

Net 2.1 4.6

Display

Vacuum Fluorescent Display, segment

Environment

Characteristic

Temperature

Operating 0 °C to 50 °C
Storage –40 °C to 70 °C
Warm Up

Relative Humidity (noncondensing)

Operating Uncontrolled (<10 °C)

Storage <95% (–40 °C to 70 °C)

Altitude

Operating

Storage
Vibration
Safety Complies with IEC 61010-1:2001, ANSI/ISA 61010-1

EMC Des

Description

90 V to 110 V
108 V to 132 V
198 V to 242 V
216Vto264V

mm

Description

½ hour to full uncertainty specifications

<90%(10°Cto28°C)
<75%(28°Cto40°C)
<45%(40°Cto50°C)

2,000 meters
12,000 meters
Complies with MIL-PRF-28800F Class 3

(S82.02.01):2004, UL 61010-1:2004, CAN/CSA C22.2
No. 61010.1:2004, CAT I 1000V / CAT II 600 V

ignedtocomplywithIEC

26-1:1997+A1:1998+A2:2000

613

in.

Trigg eri ng

Characteristic

Trigger Delay 400 ms
External Trigger Delay <2 ms
External Trigger Jitter <1 ms
Trigger Input TTL Levels
Trigger Output

Math Functio

Min/Max, relative, hold, compare, and dB functions

Description

5Vmax

ns

Electrical

Characteristic

Input Protection 1000 V all ranges
Overrange 10% on the largest ranges of all functions except

Description

continuity and diode test

Remote Interfaces

RS-232C (RS-232 to USB Adapter cable included)

Warrant

Three years

y

4 www.tektronix.com/dmm

Electrical Specifications

DC Voltage Specifications

Specifications are valid for 5½ digit mode and after at least a half-hour warm up.

Digital Multimeters — Tektronix DMM4020

Characteristic

Description

Maximum Input 1000 V on any range
Common Mode

120 dB at 50 or 60 Hz 0.1% (1 kΩ unbalance)

Rejection
Normal Mode Rejection

80 dB at Slow Rate
A/D Nonlinearity 15 ppm of range
Input Bias Current <30 pA at 25 °C
Settling Considerations Measurement settling times are affected by source

impedance, cable dielectric characteristics, and input

signal changes

Input Cha

200 mV 199.999 mV 1 μV10μV10μV
2 V 1.99999 V 10 μV100μV100μV
20 V 19.9999 V 100 μV1000μV 1000 μV
200 V 199.999 V 1 mV 10 mV 10 mV
1000 V 1000.00 V 10 mV 100 mV 100 mV

*2At som

racteristics

Full Scale

(5½ Digits)

e dual-display measurements, the input impedance of 200 mV and 2 V ranges may be changed to 10 MΩ.

Slow

ResolutionRange

Medium Fast

Input Impedance

>10 GΩ*

>10 GΩ*
10 MΩ ±1%
10 MΩ ±1%
10 MΩ ±1%

Accuracy

Range

Uncertainty*

90 d ays 1 year

23 °C ±5 °C 23 °C ±5 °C

3

Temperature Coefficient/°C

Outside18-28°C

200 mV 0.01 + 0.003 0.015 + 0.004 0.0015 + 0.0005
2 V 0.01 + 0.002 0.015 + 0.003 0.001 + 0.0005
20 V 0.01 + 0.003 0.015 + 0.004 0.0020 + 0.0005
200 V 0.01 + 0.002 0.015 + 0.003 0.0015 + 0.0005
1000 V 0.01 + 0.002 0.015 + 0.003 0.0015 + 0.0005

*3Uncertainty given as ±(% of reading + % of range).

2

2

www.tektronix.com/dmm 5

Data Sheet

AC Voltage Specifications

AC Voltage sp ec
1% to 5% of range and <50 kHz, add an additional error of 0.1% of range, and for
50 kHz to 100 kHz, add 0.13% of range.

ifications are for AC sinewave signals >5% of range. For inputs from

Characteristic

Maximum Input 750 V
Measurement Method

Description

or 1000 V peak or 8 × 107Volts-Hertz product

RMS

AC-coupled true RMS. Measures the AC component of

input with up to 1000 VDC bias on any range
AC Filter Bandwidth
Common Mode

20 Hz - 100 kHz

60 dB at 50 Hz or 60 Hz (1 kΩ unbalance)
Rejection

Maximum Crest Factor 3:1 at Full Scale
Additional Crest Factor

Errors (<100 Hz)

Crest Factor 1-2, 0.05% of full scale

CrestFactor2-3,0.2%offullscale

Only applies for non-sinusoid signals

Input Characteristics

Full Sca

(5½ Digi

le

ts)

Slow

ResolutionRange

Medium Fast

200 mV 199.999 mV 1 μV10μV10μV
2 V 1.99999 V 10 μV100μV100μV
20 V 19.9999 V 100 μV1000μV 1000 μV
200 V 199.999 V 1 mV 10 mV 10 mV
750 V 750.00 V 10 mV 100 mV 100 mV

Accuracy

Range Frequ

200 mV

20 Hz -

45 Hz -

20 kH

z-100kHz

50 kH

2V

20 Hz

45 Hz

20 kH

Hz - 100 kHz

50 k

20 V

V

200

0V

75

*3Uncertainty given as ±(% of reading + % of range).

20 H

z-20kHz

45 H

Hz - 50 kHz

20 k

Hz - 100 kHz

50 k

20 H

Hz - 20 kHz

45

kHz - 50 kHz

20

kHz - 100 kHz

50

Hz - 45 Hz

20

Hz - 20 kHz

45

0kHz-50kHz

2

0kHz-100kHz

5

ency

45 Hz

20 kHz

z-50kHz

-45Hz

-20kHz

z-50kHz

z-45Hz

z-45Hz

Uncertainty*

s

90 day

23 °C ±5 °C 23 °C ±5 °C

.05

0.8 + 0

0.05

0.15 +

0.05

0.3 +

0.05

0.8 +

0.05

0.8 +
+0.05

0.15

0.05

0.3 +

+0.05

0.8

+0.05

0.8

5 + 0.05

0.1
+0.05

0.3
+0.05

0.8
+0.05

0.8

15 + 0.05

0.
3 + 0.05

0.
8 + 0.05

0.
8 + 0.05

0.

15 + 0.05

0.
.3 + 0.05

0

.8 + 0.05

0

3

1 year

0.9 + 0

0.2 + 0
+0.05

0.35

0.9 +

0.9 +

0.2 +
+0.05

0.35
+0.05

0.9
+0.05

0.9
+0.05

0.2

5 + 0.05

0.3
+0.05

0.9
+0.05

0.9

2 + 0.05

0.

35 + 0.05

0.
9 + 0.05

0.
9 + 0.05

0.
2 + 0.05

0.

.35 + 0.05

0

.9 + 0.05

0

.05
.05

0.05

0.05

0.05

Input Impedance

1MΩ ±2% shunted by

<100 pf

Temperature Coefficient/°C

Outside 18 - 28 °C

0.005

0.01 +

0.005

0.01 +
+ 0.005

0.01

+0.01

0.05
+ 0.005

0.01
+ 0.005

0.01
+ 0.005

0.01

5+0.01

0.0
1 + 0.005

0.0
1 + 0.005

0.0
1 + 0.005

0.0

5+0.01

0.0
1 + 0.005

0.0
01 + 0.005

0.
01 + 0.005

0.

05 + 0.01

0.
01 + 0.005

0.
01 + 0.005

0.

.01 + 0.005

0

.05 + 0.01

0

6 www.tektronix.com/dmm

Resistance

Specifications
REL is not used, add 0.2 Ω for 2-wire resistance plus lead resistance.

are for 4-wire resistance function, or 2-wire resistance with REL. If

Digital Multimeters — Tektronix DMM4020

Characteristic

Measurement Method
Max Lead Resistance

(4-wire ohms)

Description

Current source referenced to LO input
10% of range per lead for 200 Ω,2kΩ ranges. 1 kΩ

per lead on all other ranges

Input Protection 1000 V on all ranges

Input Characteristics

Full Scale

(5½ Digits)

Slow

200 Ω 199.999 Ω 0.001 Ω 0.01 Ω 0.01 Ω
2kΩ 1.99999 kΩ 0.01 Ω 0.1 Ω 0.1 Ω
20 kΩ 19.9999 kΩ 0.1 Ω 1 Ω 1 Ω
200 kΩ 199.999 kΩ 1 Ω 10 Ω 10 Ω
2MΩ 1.99999 MΩ 10 Ω 100 Ω 100 Ω
20 MΩ 19.9999 MΩ 100 Ω 1kΩ 1kΩ

ResolutionRange

Medium Fast

Current Source

0.8 mA

0.8 mA

0.08 mA

0.008 mA

0.9 μA

0.16 μA

100 MΩ 100.000 MΩ 1kΩ 10 kΩ 10 kΩ 0.16 μA||10MΩ

Accuracy

Range

200 Ω
2kΩ
20 kΩ
200 kΩ
2MΩ
20 MΩ
100 MΩ

*3Uncertainty given as ±(% of reading + % of range).

Uncertai

90 d ays 1 year

23 °C ±5 °

C

0.02 + 0.004 0.03 + 0.004 0.003 + 0.0006

0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005

0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005

0.015 + 0.002 0.02 + 0.003 0.003 + 0.0005

0.03 + 0.003 0.04 + 0.004 0.004 + 0.0005

0.2 + 0.003 0.25 + 0.003 0.01 + 0.0005

1.5 + 0.004 1.75 + 0.004 0.2 + 0.0005

nty*

3

23 °C ±5 °

Temperat

C

ure Coefficient/°C

Outside 1

8-28°C

www.tektronix.com/dmm 7

Data Sheet

DC Current

Characteristic

Input Protection

Description

Tool-accessible 11 A / 1000 V and 440 mA / 1000 V
fuses

Shunt Resist

ance

0.01 Ω for 2 A a
1 Ω for 20 mA an
Burden volta

nd 10 A ranges

d200mA

ge <5 mV for 200 μA and 2 mA range

Input Characteristics

Full Scale

(5½ Digits)

Slow

ResolutionRange

Medium Fast

Burden Voltage

200 μA 199.999 μA0.001μA0.01μA0.01μA<5mV
2 mA 1999.99 μA0.01μA0.1μA0.1μA<5mV
20 mA 19.9999 mA 0.1 μA1μA1μA <0.05 V
200 mA 19.9999 mA 1 μA10μA10μA<0.5V
2 A 1.99999 A 10 μA100μA100μA<0.1V
10 A 10.0000 A 100 μA1mA 1mA <0.5V

Accuracy

Range

Uncertainty*

90 d ays 1 year

23 °C ±5 °C 23 °C ±5 °C

3

Temperature Coefficient/°C

Outside18-28°C

200 μA 0.02 + 0.005 0.03 + 0.005 0.003 + 0.001
2 mA 0.015 + 0.005 0.02 + 0.005 0.002 + 0.001
20 mA 0.03 + 0.02 0.04 + 0.02 0.005 + 0.001
200 mA 0.02 + 0.005 0.03 + 0.008 0.005 + 0.001
2 A 0.05 + 0.02 0.08 + 0.02 0.008 + 0.001
10 A 0.18 + 0.01 0.2 + 0.01 0.008 + 0.001

*3Uncertainty given as ±(% of reading + % of range).

8 www.tektronix.com/dmm

AC Current

The following A
greater than 5% of range. For inputs from 1% to 5% of range, add an additional
error of 0.1% of range.

C current specifications are for sinusoidal signals with amplitudes

Digital Multimeters — Tektronix DMM4020

Characteristic

Input Protection

Description

Tool-accessible 11 A / 1000 V and 440 mA / 1000 V
fuses

Measurement Method

AC-coupled true RMS

Shunt Resistance 0.01 Ω for 2 A and 10 A ranges

1 Ω for 20 mA and 200 mA

AC Filter Bandwidth

20 Hz - 100 kHz
Maximum Crest Factor 3:1 at Full Scale
Additional Crest Factor

Errors (<100 Hz)

Crest Factor 1-2, 0.05% of full scale

CrestFactor2-3,0.2%offullscale

Only applies to non-sinusoid signals

Input Characteristics

Full Scale

(5½ Digits)

Slow

ResolutionRange

Medium Fast

Burden Voltage

20 mA 19.9999 mA 0.1 μA1μA1μA <0.05 V
200 mA 199.999 mA 1 μA10μA10μA<0.5V
2 A 1.99999 A 10 μA100μA100μA<0.1V
10 A 10.0000 A 100 μA1mA 1mA <0.5V

Accuracy

Range Frequency

Uncertainty*

90 days 1 year

23 °C ±5 °C 23 °C ±5 °C

3

Temperature Coefficient/°C

Outside 18 - 28 °C

20 Hz - 45 Hz 1 + 0.05 1.25 + 0.06 0.015 + 0.00520 mA
45 Hz - 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
20 Hz - 45 Hz 0.8 + 0.05 1 + 0.06 0.015 + 0.005200 mA
45 Hz - 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
20 Hz - 45 Hz 1 + 0.05 1.25 + 0.06 0.015 + 0.0052A
45 Hz - 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
20 Hz - 45 Hz 1 + 0.1 1.25 + 0.12 0.015 + 0.00510 A
45 Hz - 2 kHz 1 + 0.1 0.5 + 0.12 0.015 + 0.005

*3Uncertainty given as ±(% of reading + % of range).

www.tektronix.com/dmm 9

Data Sheet

Frequency

Characteristic Description

Gate Time

Measurement
Method

Settling
Considerations

Measurement
Considerations

Input Characteristics

Range Frequency

100mVto750V*

*4Input >100 mV.

5

Limitedto8×107VHz.

*

131 ms

AC-coupled input using the AC voltage
measurement function

When measuring frequency after a DC offset
voltage change, errors may occur. For the most
accurate measurement, wait up to 1 second to allow
input-blocking RC time constant to settle

To minimize measurement errors, shield inputs
from external noise when measuring low-voltage,
low-frequency signals

4, 5

20 Hz - 2 kHz 0.01 + 0.002 0.01 + 0.003 0.002 + 0.001

2 kHz - 20 kHz 0.01 + 0.002 0.01 + 0.003 0.002 + 0.001

20 kHz - 200 kHz 0.01 + 0.002 0.01 + 0.003 0.002 + 0.001

200 kHz - 1 MHz 0.01 + 0.004 0.01 + 0.006 0.002 + 0.002

Uncertainty

90 days 1 year

23 °C ±5 °C 23 °C ±5 °C

Temperature Coefficient/°C

Outside 18 - 28 °C

Continuity

Characteristic

Continuity Threshold 20 Ω
Test Current
Response Time
Rate Fast
Maximum Reading
Resolution

Description

1mA

100 S/s with audible tone

199.99 Ω

0.01 Ω

Diode Test

Characteristic

Response Time
Rate Fast
Maximum Reading 1.9999 V
Resolution 0.1 mV

Description

100 S/s with audible tone

10 www.tektronix.com/dmm

Digital Multimeters — Tektronix DMM4020

Ordering Information

Models

Model Description

DMM4020 5.5 Digit Multimeter

DMM4020 Includes: Meter, TL710 test leads, line cord, spare line fuse, statement
of cal practices, Warranty statement, Safety and Installation Guide, Connectivity
Installation Manual, CD-ROM with user manual (English, French, Italian, German,
Spanish, Simplified Chinese, Traditional Chinese, Korean, Russian, Japanese),
RS-232 to USB Adapter Cable, National Instruments LabVIEW SignalExpress™
Tektronix Edition, Limited Edition Software.

Please specify power plug when ordering.

Instrument

Power Plug Options

Option

Opt. A0
Opt. A1
Opt. A2
Opt. A3
Opt. A5 Switzerland
Opt. A6
Opt. A10 China
Opt. A11
Opt. E1

Options

Description

North America

Universal Euro

United Kingdom

Australia

Japan

India

Euro and UK power cords

Service Options*

Option

6

Description

Opt. CA1 Provides a single calibration event or coverage for the

designated calibration interval, whichever comes first
Opt. C3 Calibration Service 3 Years
Opt. C5 Calibration Service 5 Years
Opt. D1 Calibration Data Report
Opt. R5 Repair Service 5 Years (including warranty)

*6Test Leads and accessories are not covered by the DMM warranty and Service Offerings. Refer to the

datasheet of each Test Lead and accessory model for its unique warranty and calibration terms.

Recommended Accessories and Software

Accessory Description

Calibration Manual
196-3520-xx
TL705
TL725

077-0365-xx

Premium Test Leads (replacement/spare for TL710)

2×4 Wire Ohm 1000 V Precision Test Lead

2×4 Wire Ohm SMD Test Tweezers
AC4000 Soft Transit Case
HCTEK4321 Hard Carrying Case
Y8846S Single Rackmount Kit
Y8846D Dual Rackmount Kit
013-0369-xx

Calibration Fixture 4-terminal short
SIGEXPTE NI LabVIEW SignalExpress Tektronix Edition Software –

Full Version

Product(s) are manufactured in ISO registered facilities.

Product(s) complies with IEEE Standard488.1-1987 and RS-232C.

www.tektronix.com/dmm 11

Data Sheet

Contact Tektronix:

ASEAN / Australa

Balkans, Israel, South Africa and other ISE Countries [phone]

Central East Eu

Mexico, Central/South America & Caribbean 52 (55) 54247900

rope, Ukraine, and the Baltics [phone]

Central Europe & Greece [phone]

Luxembourg [phone]

Middle East,

For other areas contact Tektronix, Inc at: 1 [phone]

Asia, and North Africa [phone]

The N etherlands 090 02 021797

People’s Rep

United Kingdom & Ireland [phone]

ublic of China 86 (10) 6235 1230

Republic of

sia (65) 6356 3900

Austria [phone]

Belgium 07 81 601

Brazil [phone]

Canada 1 [phone]

Denmark [phone]

Finland +41526

France [phone]

Germany [phone]

Hong Kong (852

India (91) 80-42922600

Italy [phone]

Japan 81 (3) 67

Poland [phone]

Portugal 80 08 12370

Korea 82 (2) 6917-5000

Russia & CIS [phone]

South Africa [phone]

Spain (+34)

Sweden 020 08 80371

Switzerland [phone]

Tai wa n 886 (

USA 1 [phone]

75 3777

) 2585-6688

14-3010

Norway 800 16098

901 988 054

2) 2722-9622

Updated 5 August 2009

66

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For Further Information. Tektronix maintains a comprehensive, constantly expanding
collection of application notes, technical briefs and other resources to help engineers working
on the cutting edge of technology. Please visit www.tektronix.com

t © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents,

Copyrigh

d pending. Information in this publication supersedes that in all previously published material.

issued an

tion and price change privileges reserved. TEKTRONIX and TEK are registered trademarks of

Specifica

x, Inc. All other trade names referenced are the service marks, trademarks, or registered trademarks

Tek t ro n i

espective companies.

of their r

16 Oct 2009 3MW-24431-1