Extech Instruments MS400 Manuel utilisateur

User Manual

Handheld Digital Storage

Oscilloscope & Multimeter

Model MS400

Figure 1 – Meter Faceplate

MS400 Version 2.0 – December 2007

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of

defects in parts and workmanship for one year from date of shipment (a six month

limited warranty applies to sensors and cables). If it should become necessary to return

the instrument for service during or beyond the warranty period, contact the Customer

Service Department at (781) 890-7440 ext. 210 for authorization or visit our website

www.extech.com for contact information. A Return Authorization (RA) number must be

issued before any product is returned to Extech. The sender is responsible for shipping

charges, freight, insurance and proper packaging to prevent damage in transit. This

warranty does not apply to defects resulting from action of the user such as misuse,

improper wiring, operation outside of specification, improper maintenance or repair, or

unauthorized modification. Extech specifically disclaims any implied warranties or

merchantability or fitness for a specific purpose and will not be liable for any direct,

indirect, incidental or consequential damages. Extech's total liability is limited to repair

or replacement of the product. The warranty set forth above is inclusive and no other

warranty, whether written or oral, is expressed or implied.

Calibration and Repair Services

Extech offers repair and calibration services for the products we sell. Extech also

provides NIST certification for most products. Call the Customer Care Department for

information on calibration services available for this product. Extech recommends that

annual calibrations be performed to verify meter performance and accuracy.



Support line (781) 890-7440

Technical Support: Extension 200; E-mail: [email protected]

Repair & Returns: Extension 210; E-mail: rep[email protected]

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Cor

oration

285 Bear Hill Rd.

Waltham

MA 02451

MS400 Version 2.0 – December 2007

Table of Contents

Chapter Page

Safety Information 5

Safety Terms and Symbols 5

Specific Warning and Caution Terms 5

Terms Used With This Product 5

Symbols Used With This Product 5

General Safety Information 5

General Inspection 7

Performing a General Inspection 7

Checking for Shipping Damage 7

Checking Accessories 7

Complete Instrument Check 7

Contents of the Meter Kit 7

Input Connections 8

Description of the Front Panel and Keys 8

Using the Scope 11

About this Chapter 11

Powering-Up the Oscilloscope 11

Oscilloscope Operation Window 11

Navigating a Menu 13

Manually Setting the Vertical System, Horizontal System and Trigger Position 14

Resetting the Oscilloscope 17

Input Connections 17

Displaying an Unknown Signal with Auto Set 18

Automatic Zero-ing of Trigger Horizontal Position and Trigger Level Position 18

Automatic Measurements 18

Freezing the Screen 19

Using Average for Smoothing Waveforms 19

Using ‘Persistence’ to Display Waveforms 20

Using Peak Detection to Display Glitches 20

Selecting AC-coupling 21

Reversing the Polarity of the Displayed Waveform 22

Using Waveform Math Functions 23

Using the Multimeter 24

About this Chapter 24

Meter Connections 24

Multimeter Operation Window 24

Multimeter Measurements 26

Measuring Resistance Values 26

Diode Measurement 26

Continuity Tests 26

Capacitance Measurement 27

DC Voltage Measurement 27

AC Voltage Measurement 27

DC Current Measurement 28

AC Current Measurement 28

Freezing the Readings 29

Taking a Relative Measurement 29

Selecting Automatic/Manual Range Adjustment 30

MS400 Version 2.0 – December 2007

Advanced Oscilloscope FUNCTIONS 31

About this Chapter 31

Setting the Vertical CH1 and CH2 31

Setting the Channel Coupling 32

Enabling the Scope Channels 33

Adjusting the Probe Scale 33

Inverting a Waveform 33

Math Function Menu Settings 33

Setting the Trigger System 34

Triggering Control 35

Edge Triggering 35

Video Triggering 36

‘Acquire Mode’ Setting 37

Display Settings 37

Display Style 38

Persistence Mode 38

XY Mode 39

Saving Waveforms 39

Function Setting Menu 40

Automatic Measurements 40

Cursor Measurements 41

System State Menu 43

Setting Time Base Mode 44

Data Transmission – PC Interface 45

Trouble Shooting 46

Appendix 47

Appendix and Specifications 47

Oscilloscope 47

Meter 49

General Specifications 50

Appendix B: Maintenance and Cleaning 51

Common Maintenance 51

Storage of Oscilloscope 51

Replacing the Lithium Battery Unit 51

MS400 Version 2.0 – December 2007

Safety Information

Note: Please read this user manual prior to operating the unit.

Safety Terms and Symbols

Specific Warning and Caution terms that appear throughout the manual

Warning: “Warning” identifies conditions and actions that pose hazards to users.

Caution: “Caution” identifies conditions and actions that may damage the product.

Terms printed on the meter and contained in this manual

The following terms may appear on the product or anywhere throughout the associated

manuals:

Danger: The term “Danger” is used in this manual to indicate that serious injury or

death may result if the safety instructions are not followed.

Warning: The term “Warning” is used in this manual to indicate that personal injury may

result if instructions are not followed.

Notice: The term “Notice” is used in this manual to indicate that damages to product,

other properties, or accessories may result if instructions are not followed.

Symbols Used on this Product and in the documentation

The following symbols may be found on the meter and in associated documentation:

General Safety Information

Carefully read the following safety information in order to avoid any personal injury and

damage to this product or to any products associated with its use. In order to lessen the

chances of any possible dangers that may occur in connection with the use of this

product, the product should only be used in the specified applications the product was

designed and intended for.

Warning:

To avoid fire or electrical shock please use the proper power adapter. Use only

the power adapter recommended by the manufacturer.

Warning:

If test tool inputs are connected to more than 42V peak (30Vrms) or used in

circuits of more than 4800VA, adhere to the following guidelines in order to

avoid fire or electrical shock:

● Use only insulated voltage probes, test leads and the adapter supplied with

the test tool, or indicated by Extech as suitable for the Oscilloscope &

Multimeter.

● Before use inspect voltage probes, test leads and accessories for

mechanical damage and replace when required.

● Remove all probes, test leads and accessories that are not in use.

High Voltage Refer to

User Manual

Protective

Ground

Measurement

Ground

Casing

Ground

MS400 Version 2.0 – December 2007

● Always connect the power adapter first to the AC outlet before connecting

it to the Oscilloscope & Multimeter.

● Do not apply voltages that differ more than 400V from earth ground to any

input when measuring in a CAT III environment.

● Do not apply voltages that differ more than 400V from earth ground to any

input when measuring in a CAT II environment.

● Do not apply voltages that differ more than 400V from each other to the

isolated input when measuring in a CAT III environment.

● Do not apply voltages that differ more than 400V from each other to the

isolated inputs when measuring in a CAT II environment.

● Do not apply input voltages above the rating of the instrument. Use caution

when using 1:1 test leads because the probe tip voltage will be directly

transmitted to the Oscilloscope & Multimeter.

● Do not use exposed metal BNC or banana plug connectors. Do not insert

metal objects into connectors.

● Always use the Oscilloscope & Multimeter only in the manner specified.

● Voltage ratings that are mentioned in the warning are provided as limits for

“working voltage”. The representative Vac rms (50-60Hz) indicates AC sine

wave applications and as Vdc for DC applications. Overvoltage Category III

refers to distribution level and fixed installation circuits inside a building.

Overvoltage Category II refers to local levels, which are applicable for

appliances and portable equipment.

Only qualified technical personnel should perform maintenance.

Pay attention to the nominal values of all terminals: To avoid fire or electric

shock, please keep a watchful eye on all nominal values and marks specified on

this product. Before any connections are made, carefully read the user’s manual

of the product for further information of nominal values.

DO NOT operate this product without the instrument cover plate in place: If the

cover plate or panel has been removed, do not perform any operations with this

product.

DO NOT come into contact with bare conductors: When the product is powered

on, do not touch any bare joints or parts of the meter.

DO NOT operate this product in case of any undetermined failure: When in

doubt of the cause of any damage to this product, consult qualified technical

personnel.

Keep the product well ventilated: Refer to the user manual for detailed installation

instructions. Make sure the product is operated in a well ventilated area.

DO NOT operate this product in humid conditions.

DO NOT operate this product where explosives are handled or used.

Keep the product surface clean and dry.

MS400 Version 2.0 – December 2007

General Inspection

After purchasing a new MS400 oscilloscope, it is suggested that a general inspection of

the instrument be performed according to the following steps:

Check whether there is any damage to the product caused by shipping

If the packing material, boxes or foam cushions are found in a damaged condition, keep

them in a proper place until the complete instrument and accessories have passed

electrical and mechanical tests.

Check the Accessories

Double check the accessory list and pictures of the parts and accessories included with

your instrument. Check whether there is any accessory loss by referencing the Appendix.

In case of any accessory loss, damage or variation in specifications, contact the

organization where the product was purchased.

Check the Instrument

If the instrument is apparently damaged, fails in normal operation or in a performance

test, consult the place of purchase.

If the instrument is damaged due to shipping, keep the packing material in a proper place

and contact the place of purchase.

Contents of the meter kit

Description Standard Optional

Meter ●

Adapter ●

Two (2) Oscilloscope Probes (grey) ●

Pair of Test Leads for Multimeter (black and red) ●

Measuring Extension Module for Low Current ●

Measuring Module for low range Capacitance ●

Adjustment Probe Tool ●

One (1) USB Data Transmission cable ●

User Manual ●

One (1) disk that includes the PC interface

software

●

Carrying Case ●

MS400 Version 2.0 – December 2007

Input Connections

Figure 2

Description:

1. AC power adapter for AC power supply and battery recharging

2. Multimeter test leads

3. Multimeter input jacks, including three circular banana jacks and two square jacks.

The three circular jacks are used for voltage, current and resistance inputs, while the

two square jacks are used for capacitance inputs

4. Oscilloscope probes

5. Oscilloscope channel inputs: The upper one is for Channel 1 (CH1) while the lower

one is for Channel 2 (CH2)

MS400 Version 2.0 – December 2007

Description of the Front Panel and the Keypad

132

11 14 12 15

Figure 3

Description:

1. Power adapter jack

2. Serial port

3. USB jack

4. Backlight switch

5. POWER: Power switch

6. A: Multimeter current measurement key

7. V: Multimeter voltage measurement key

8. R: Multimeter resistance, diode, On/Off and capacitance measurement key

9. OSC LEFT: Oscilloscope left-direction adjustment key

10. OSC RIGHT: Oscilloscope right-direction adjustment key

11. OSC OPTION: Oscilloscope setting key

MS400 Version 2.0 – December 2007

Using the four keys OSC LEFT, OSC RIGHT, OSC UP and OSC DOWN, users

can make the following settings by pressing OSC OPTION. The settings include:

Voltage Unit Scale for Channel 1 (CH1 VOL); Voltage Unit Scale for Channel 2

(CH2 VOL); Primary Time base (TIME BASE), zero point position for Channel 1

(CH1 ZERO), zero point position for Channel 2 (CH2 ZERO), trigger horizontal

position (TIME) and trigger level position (TRIG).

When performing Waveform Calculations, users can also adjust and calculate the

Display Multiplying Factor of a Waveform (CHM VOL) and the vertical display

position (CHM ZERO).

In cursor measurement mode, users can adjust the positions of Cursor 1 (V1 or

T1) and Cursor 2 (V2 or T2).

12. OSC DOWN: Oscilloscope display downward adjustment key.

13. OSC UP: Oscilloscope display upward adjustment key.

14. OSC/DMM: Press to switch between oscilloscope and multimeter.

15. AUTO SET:

In the Multimeter Mode, when performing a current or voltage measurement, the

user can switch between AC and DC with this key; when performing a resistance

measurement, the user can select resistance, diode, On/Off or a capacitance

measurement with this key.

This key is used for auto setting in the oscilloscope operation mode.

16. RUN/STOP: key for starting or stopping an operation.

17. MENU DOWN: Move down the menu list.

18. MENU: Show / Hide the menu.

19. MENU UP: Move up the menu list.

20. F1～F5: Switch or Adjustment options for each menu

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