99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
User Manual
Model 381395
5MHz Dual Channel
True RMS Oscilloscope Datalogger
Visit us at www.TestEquipmentDepot.com
Back to the Extech 381395 Product Page
FUNC
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
i
Table of Contents
1. GENERAL INFORMATION 1-1
1.1. FEATURE OVERVIEW 1-1
1.1.1. Universal SCOPE Mode 1-1
1.1.2. DATA Logger 1-1
1.1.3. Digital Multi-Meter 1-2
1.1.4. Frequency Counter 1-2
1.1.5. General 1-2
1.2. WARRANTY INFORMATION 1-3
1.3. PRECAUTIONS 1-3
1.4. MAINTENANCE 1-3
1.5. SAFETY INFORMATION: READ FIRST 1-4
1.6. SYMBOLS AND TERMS 1-4
1.7. UNPACKING THE INSTRUMENT 1-5
1.7.1. Standard 1-5
1.7.2. Options 1-5
2. PRODUCT DESCRIPTION 2-1
2.1. THE INPUT TERMINAL AREA 2-2
2.1.1. Caution (
2.1.2. Warnin g (
2.1.3. 600V MAX
2.1.4. The METER provides 4 input jacks 2-2
2.2. THE KEYS AREA 2-3
2.2.1. Turning power on and off (
2.2.2. AUTO key (
2.2.3. TRIGger key (
2.2.4. Function key (
2.2.5. Command menu keys (
2.2.6. Four arrow keys (
2.2.7. Display back light (
2.2.8. Hold key (
2.3. THE DISPLAY AREA 2-7
2.3.1. Special in di cator 2-7
2.3.2. DISPLAY depends on selected function 2-8
2.3.3. The Command Menu 2-15
) 2-2
) 2-2
2-2
) 2-3
) 2-3
) 2-3
) 2-4
) 2-4
) 2-5
) 2-6
) 2-6
ii
THE USB INTERFACE AND POWER INPUT TERMINAL 2-16
2.4.
2.4.1. USB INTERFACE 2-16
2.4.2. Power Adaptor Input Terminal 2-16
3. USING THE SCOPE 3-1
3.1. POWERING THE METER 3-1
3.2. DISPLAY BACKLIGHT 3-1
3.3. SELECTING “GENERAL SCOPE” IN THE MENU 3-1
3.4. SELECTING ITEMS IN SCOPE SETUP MENU 3-2
3.4.1. Set Frequency measurement for CHA 3-2
3.5. CHANGING THE GRAPHIC REPRESENTATION 3-3
3.5.1. Changing the vertical division 3-3
3.5.2. Changing the Horizontal division (Time Base) 3-3
3.5.3. Positioning the Waveform of CH A on the Screen 3-4
3.5.4. Positioning the Waveform of CH B on the Screen 3-4
3.5.5. Positioning the Trigger Point Indicator on the Screen 3-4
3.6. ACQUIRING THE WAVEFOR M 3-5
3.6.1. Recording slow signals over a Long Period of Time. 3-5
3.6.2. Selecting AC-Coupling for INPUT A 3-5
3.7. TRIGGERING ON A WAVEFORM 3-6
3.7.1. Setting Trigger mode (Tmode) 3-6
3.7.2. Setting AUTO Trigger Level 3-7
3.7.3. Setting Normal Trigger mode 3-8
3.7.4. Setting Trigger Slope 3-8
3.7.5. Changing the Trigger level Indicator 3-8
3.7.6. Making a single acquisition 3-9
3.8. STORING AND RECALLING SCREENS 3-9
3.8.1. Storing Screen 3-9
3.8.2. Recalling Screen 3-10
4. USING THE DATA LOGGER 4-1
4.1. SELECTING ITEMS IN DATA LOGGER SETUP MENU 4-1
4.1.1. Changing the Sampling Type 4-1
4.1.2. Changing the Sampling interval Time 4-2
4.1.3. Changing the Start/Stop Address 4-2
4.2. DATA LOGGER 4-3
4.2.1. Changing the Measurement Function & Range 4-4
4.3. RECALL DATA 4-4
5. USING THE DIGITAL MULTIMETER 5-1
5.1. THE DIGITAL MULTIMETER DISPLAY MODE 5-1
iii
5.1.1. RECORD MODE 5-1
5.1.2. RELATIVE MODE 5-1
5.1.3. COMPARE MODE 5-2
5.1.4. TREND PLOT 5-2
5.2. MEASUREMENT PROCEDURES 5-3
5.2.1. DC V 5-3
5.2.2. AC V 5-4
5.2.3. Resistance 5-5
5.2.4. Continuity 5-5
5.2.5. Frequency 5-6
5.2.6. RPM 5-6
5.2.7. Pulse Width 5-7
5.2.8. Duty 5-7
6. SYSTEM SETUP 6-1
6.1. CONFIGURE THE AUDIBLE BEEPER 6-1
6.2. AUTO POWER OFF 6-1
6.3. SET THE BAUD RATE (BPS) 6-1
6.4. CHANGE THE CURRENT DATE AND TIME 6-2
6.4.1. Setting the time 6-2
6.4.2. Setting the date Error!
Bookmark not defined.
7. SPECIFICATIONS 7-1
7.1. GENERAL SPECIFICATIONS 7-1
7.2. TECHNICAL SPECIFICATIONS 7-2
7.2.1. General Oscilloscope Function Specs. 7-2
7.2.2. Data Logger Function Specs. 7-3
7.2.3. Digital Multimeter Function Specs. 7-3
8. REMOTE PC INTERFACE 8-1
8.1. USB HID DEVICE INSTALLATION 8-1
8.1.1. System Requirements 8-1
8.1.2. Operating System 8-1
8.2. PC USB PORT CONNECTION 8-1
8.2.1. HID Device 8-1
8.3. INSTALLING WINDOWS APPLICATION SOFTWARE 8-2
8.4. RUNNING THE APPLICATION SOFTWARE 8-3
8.4.1. Oscilloscope Mode 8-3
8.4.2. DMM & Data Logger Mode 8-4
8.4.3. Display Mode for DMM & Data Logger Mode 8-5
iv
9. MAINTAINING THE METER 9-1
9.1. SECTION OVERVIEW
ERROR! BOOKMARK NOT DEFINED.
9.2. STATIC SAFE HANDLING 9-1
9.3. CLEANING THE METER 9-1
9.4. STORING THE METER 9-2
9.5. CALIBRATION 9-2
9.6. REPLACING AND DISPOSING OF THE LI-ION BATTERY 9-2
9.6.1. Replacing the battery pack 9-3
10. APPENDICES 10-1
10.1. TROUBLESHOOTING GUIDE 10-1
10.2. LCD STATUS INDICATION BY FUNCTION 10-2
10.2.1. Function Menu & General Scope Mode 10-2
10.2.2. Data Logger Mode 10-2
10.2.3. Multimeter / Record Mode 10-2
10.2.4. Multimeter / Relative Mode 10-3
10.2.5. Multimeter / Compare Mode 10-3
10.2.6. Multimeter / Trend Plot Mode 10-3
10.2.7. System Setup Mode 10-4
10.2.8. Trigger Setup Mode 10-4
v
1. General Information
1. General Information
This section contains general Meter information. The bulleted list below outlines the section.
z Feature Overview
z Warranty Information
z Safety Information
z Symbols and Terms
z Specifications
z Unpacking the Test Tool Kit
1.1. Feature Overview
The Model 381395 is a handheld, battery-operated Oscilloscope, True RMS Data Logger
and Digital Multimeter designed and tested according to IEC Publication 1010-1 (EN 61010-
1:1993, Over voltage Category II)
This instrument features:
1.1.1. Universal SCOPE Mode
z Dual Channel with Auto Calibration
z Sampling Time
Single CH mode: 50 MS/s, Dual CH mode: 25 MS/s
z DC to 5MHz Oscilloscope bandwidth
z 16 shot waveform and setup memories
z Automatic Triggering
z Automatic setting for horizontal and vertical divisions
z Roll and Single shot modes
z Excellent internal noise reduction
z Real time Updates
1.1.2. DATA Logger
z Logger Memory: 17,000 Data Points
z Logs the following signal types: DCV, ACV, OHM, BZ, Hz, RPM, P/width, Duty
z Prints programmed intervals in Hours/Minutes/Seconds
z Appends incoming data to existing data
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Model 381395 Version 1.0 January 2008
1. General Information
z Sampling Rate: 0.25S/s
z Sampling intervals from 1 second to 9,999 seconds
z Sampling Mode: Peak and Sampling Time
z Built-in Real Time Clock (RTC)
z Start / Stop address setting
z Data is retained when battery is low or has been removed
1.1.3. Digital Multi-Meter
z Large 10,000 count LCD and fast 101 segment analog Bar Graph display
z Programmable Function mode: Multi display measurements
Record (Max, Min, Avg), Relative (Ref, Err), Compare (GO-NOGO) mode and Trend plot
z Real Time for MAX or MIN, elapsed time for AVG
z Meter automatically selects best range instantly (Fast Auto range)
z Data hold and run mode
z RPM, Duty cycle and Pulse width measurement
z True RMS digital Multi-meter
z Max. Voltage between Input and Ground: DC or AC 600Vrms
z 600V Overload Protection
1.1.4. Frequency Counter
z Frequency Range: 0 to 10MHz
z Accuracy: ±(0.05%+5)
1.1.5. General
z Easy to Operate
z Backlit display with Low battery indication
z USB PC interface for viewing and saving measurements and waveform data
z Auto power off (can be disabled)
z Display resolution: 132 x 128 pixels
z Designed to comply with safety standards: UL3111 and CSA C22.2 No.1010-1
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Model 381395 Version 1.0 January 2008
1. General Information
1.2. Warranty Information
EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and
workmanship for one year from date of shi pment (a six mo nth limite d warranty app lies 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
(RA) number must be issued before any product is ret urned to Extech. The sender is responsible fo r
shipping charges, freight, ins ur anc e and p ro per packagi ng t o pr event da mag e in transit. This warranty
does not apply to defects resulting fr om action of th e user such as misuse, imp roper wiri ng, operat ion
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, indi rect, incidental or consequential damages. Extech's total liability is
limited to repair or replacement of the pr oduct. The warranty set fort h above is inclusive and no other
warranty, whether w r i tten or ora l, is expr es sed or impl i ed.
for contact information. A Return Authorization
1.3. Precautions
z Carefully read the manual before operating this device
z The contents of this manual may be amended by the manufacturer without notice
z Never dismantle the instrument
z The equipment has been tested and calibrated before delivery
z This product should be stored in a secured area
z The rear protective terminal must be connected to actual earth ground otherwise electric
shock may occur.
1.4. Equipment Maintenance
z Although the equipment is durable and weather resistant, care should be taken not to
expose it to severe impact or pressure
z Keep the equipment clear of water and damp environments
z Calibration should performed once per year
z Do not operate this instrument if it appears damaged or if it functions abnormally
z Do not use the Meter near explosive gas or vapors
z To clean, wipe the surface of the equipment with a dry and clean cloth
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Model 381395 Version 1.0 January 2008
1. General Information
1.5. Safety Information: Read First
Warning!
Please read the following safety information before using the product. To avoid possible
electric shock or personal injury, please read and follow these guidelines carefully:
z Follow the guidelines in this manual and DO NOT use the Meter if the case is damaged
z Do not apply excessive voltage to the Multimeter. Apply voltage within the rated range
only
z Use caution when measuring voltages above 30V RMS, 42V peak, or 60V DC. These
voltages pose an electric shock hazard
z When using the probes always keep fingers behind the finger guards
z Always connect the common test leads (black) before connecting the live test leads (red),
and disconnect the live test leads (red) before disconnecting the common test leads
(black)
z Disconnect circuit power and discharge all high-voltage capacitors before testing
resistance and continuity
z Only qualified personnel should open the meter case
z When replacing fuses, use only the specified type and rating
z Do not try to operate the Meter if it is damaged. Disconnect the power from the equipment
and connect the point of purchase for return and repair information
1.6. Symbols and Terms
See explanation in manual before using this Meter. This symbol indicates hazards that
may cause damage to the instrument or may result in personal injury
This symbol indicates high voltage may be present. Use extra caution
Double Insulation (Protection Class II)
Recycling information
Equal potential inputs
High BNC Input
Earth (ground) terminal.
AC or DC
DC – Direct Current
AC – Alternating Current
Fuse
This product complies with the essential requirements or the applicable European laws
or directives with respect to safety, health, environment and consumer protections
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Model 381395 Version 1.0 January 2008
1.7. Unpacking the Test Tool Kit
The product package is supplied with the following items:
1.7.1. Standard
z One Meter
z Two Test leads
z One Lithuim-ION Battery (installed)
z One AC Power & Rechargeable Adaptor
z One CD (PC software)
z Meter to PC USB interface cable
z One Carrying case
1. General Information
1.7.2. Options
z Rubber Holster
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Model 381395 Version 1.0 January 2008
2. Product Description
2. Product Description
A brief introduction to the basic operation of the meter is provided below. There are four
major parts of the METER. Each will be addressed in the following sections.
4
1. The input Terminal area
3
2
2. The Keys area
3. The Display area
4. The USB Interface and
Power input terminal
FUNC
1
2-1
Model 381395 Version 1.0 January 2008
2.1. The input Terminal area
2. Product Description
3
4
2
1
2.1.1. Caution ( )
Refer to the User Manual before using this Meter.
2.1.2. Warning ( )
Be extremely careful when making high-voltage measurements; DO NOT TOUCH THE
TERMINALS OR THE ENDS OF TEST LEAD PROBES
2.1.3. 600V MAX
To avoid electrical shock or instrument damage, do not connect the COM input terminal to
any source of more 600V with respect to earth/ground.
2.1.4. The METER provides 4 input jacks (see above)
1) Channel A
Use Channel A for all single input measurements.
2) Common
Use Common (Black) as single ground for low frequency measurements and for ACV, DCV,
Ohm, Continuity, Hz, RPM, P/W and DTY measurements.
3) Channel B
For measurements on two signals use Channel B in combination with Channel A.
4) External trigger
The EXT.TRIG input accepts external trigger signals.
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Model 381395 Version 1.0 January 2008
2.2. The Keys area
2. Product Description
5
3
8
4
2
7
1
F1
TRIG
FUNC
6
2.2.1. Powering ON and OFF ( )
Pressing and holding this key for 2-3 seconds will turn the unit on.
Pressing this key again will turn the power off.
2.2.2. AUTO key ( )
1) In General Scope Mode, pressing this key will change the Vertical and Horizontal
divisions from Manual to Auto-setting (
2) In Data Logger and Digital Multimeter modes, pressing this key will switch the Range
mode to Auto-range mode (AT).
).
2.2.3. TRIGger key ( )
Triggering informs the Meter when to begin displaying a waveform.
This key is available for use in General Scope Mode only.
c Trigger Source: Ch A or B
1 2
4
5
6 7
3
8
2-3
d Slope: Rising or Falling
e Trigger setting mode (Auto or
Normal)
f Trigger Level indicator
g Trigger point indicator
h Command Menu: Trigger level
i Command Menu: Single shot
j Command Menu: Trigger mode
(Setup)
Model 381395 Version 1.0 January 2008
2. Product Description
2.2.4. Function key ( )
Press key to display the default menu and submenus as shown below.
c
: Use the arrow keys to highlight an item.
d
e To enter the Setup mode for a particular Function, press
: Select the item
key.
1
2
3
4
5
c RECORD MODE d RELATIVE MODE e COMPARE MODE
f TREND PLOT g SYSTEM SETUP
GENERAL SCOPE DATA LOGGER
2.2.5. Command menu keys ( )
F1 through F4 are command menu soft-keys. These keys have a corresponding menu item
displayed on the LCD. Press a soft-key to select the command term shown above the key.
2-4
Model 381395 Version 1.0 January 2008
2. Product Description
2.2.6. Four arrow keys ( )
These keys serve as the primary means of navigating the instrument’s menus and operating
displays.
1) In the Ge neral Scope Mode
(1) When command menu is in Div mode. (
Æ Vertical (Volt) Division changes.
: Press to select a higher division value.
•
[Ex-1] 50mÆ0.1Æ0.2Æ0.5Æ1Æ2Æ…Æ50Æ100Æ200V
•
Or
[Ex-2] 200Æ100Æ50Æ…Æ2Æ1Æ0.5Æ0.2Æ0.1Æ50mV
(2) When command menu is in Pos mode. (
Æ The Waveform for Channel A or B can be moved.
•
•
(1) When command menu is in Div mode. (
Æ Horizontal (Time) Division changes can be made.
•
: Press to change to a smaller division.
: Press to move the waveforms upward.
: Press to move the waveforms downward.
: Press to select a higher value (in seconds).
)
)
)
[Ex-1] 1uSÆ2uSÆ5uSÆ10uSÆ…Æ1SÆ2SÆ5S
•
Or
: Press to select a lower value (in seconds).
[Ex-2] 5SÆ2SÆ1SÆ…Æ10uSÆ5uSÆ2uSÆ1uS
(2) When the command menu is in the Pos mode.
(
Æ The Trigger point indicator (
: Press to move the Trigger point indicator leftward.
•
: Press to move the Trigger point indicator rightward.
•
)
) can be move.
2-5
Model 381395 Version 1.0 January 2008
2. Product Description
2) In the Data Logger and Multimeter Modes
To make Measurement Range changes:
• Press
Or
Or
[Ex-1] 000.1mVÆ0.001VÆ00.01VÆ000.1V
• Press
[Ex-2] 000.1VÆ00.01VÆ0.001VÆ000.1mV
To change the Measurement Function, use the left or right arrow key:
• Use the
[Ex-3] DTYÆP/WÆRPMÆFRQÆBZÆOHMÆACVÆ DCV
• Use the
[Ex-4] DCVÆACVÆOHMÆBZÆFRQÆRPMÆP/WÆDTY
key to select a higher range.
key to select a lower range.
key:
key:
3) In the S ystem Set u p mo de
, , , : Use the arrow keys to move the cursor and to increase / decrease the
value of a selection.
2.2.7. Display back light ( )
Press this key to turn on the backlight.
To turn the back light off, press this key again.
2.2.8. Hold key ( )
1) In the Ge neral Scope Mode
The meter can store setups and waveforms in its internal memory for later recall. Sixteen (0-
15) setup and waveform memories are available.
Memory mode. (
2) In Data Logger and Multimeter Mode
All readings and waveforms can be held (frozen on the display) at any time in this mode.
)
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Model 381395 Version 1.0 January 2008
2. Product Description
2.3. The Display area
The screen is divided into three areas: INDICATORS, DISPLAY area, and COMMAND
MENU. Refer to the Figure below.
1
2
3
2.3.1. Special indicators
▪ HOLD: Freezes the LCD display reading
▪ REMOTE: Indicates that the meter is communicating with a PC (USB Interface)
▪ BACK LIGHT (
▪ Charging LINE (
▪ BATTERY (
▪ BUZZER (
): Back light indicator
): Charging Battery indicator
): Low battery indicator
): Buzzer indicator
2-7
Model 381395 Version 1.0 January 2008
2. Product Description
2.3.2. Function-Dependent DISPLAYS
1) Display Functions in the Menu mode
Configure the General Scope, Data Logger, Multimeter and System settings
c Press to open Function Menu
PATH:
d Press
to open Setup
2) General Scope mode Dis plays
The screen is divided into four areas: Set point area, Live Scope display area, Division
setting area and Command Menu area. Refer to Figure below.
1
2
5
3
4
c ÆGENERAL SCOPEÆ d Press to open Setup
PATH: Æ ÆSelects “GENERAL SCOPE”Æ
(2-1) (Refer to diagram above) The settings are shown in this area.
c-1.
A readings will display, for example.
c-2.
c-3.
c-4.
c-5.
Æ
Æ
: Trigger selection: Channel A, B and External
: Rising or falling edge
: Trigger mode: Normal or AUTO
: Channel mode status
: Displays the numerical readings. If only input A is used, only input
: Vertical mode: CHA, CHB or A&B
: Horizontal mode: Normal, Roll
c-6.
the top-right corner of the display area.
: When pressing key in Scope mode only, the Memory Address appears at
2-8
Model 381395 Version 1.0 January 2008
(2-2) Live Scope display area
d-1
: Trigger level indicator
2. Product Description
d-2
d-3 Live Scope Display (Channel A): Displays real time waveforms and freezes captures.
d-4 Live Scope Display (Channel B)
(2-3) The Division value will be shown in this area.
e-1
e-2
e-3
Pressing
(
(2-4) Command Menu Field
f-1 Default command Menu:
If the
Toggle the command Menu items Div and Pos using the
(2-5) The Setup mode for the Scope
g-1
g-2
g-3
g-4
ROLL MODE operates when the horizontal division is between 1s and 5s
g-5
: Trigger point indicator
: Vertical Division of Channel A
: Vertical Division of Channel B
: Horizontal Divisions (Time base)
key changes Vertical division or horizontal division from MANUAL to AUTO
).
key is pressed, the command menu changes to
f-2 Press
key to display the TRIGGER command menu.
AC/DC Coupling for Channel A
AC/DC Coupling for Channel B
key.
Set CHA, CHB or CHA & CHB for Vertical mode
Set NORMal or ROLL for Horizontal mode
Set the Measurement Function for Channel A
3) Data Logger mode Displays
1
2
5
3
4
c Æ DATA LOGGER Æ
PATH: Æ ÆSelects “DATA LOGGER”Æ
d Press to open Setup
2-9
e Press to change Edit
mode
Model 381395 Version 1.0 January 2008
2. Product Description
(3-1) Display the Date and Time. (Data Logger and DMM Function)
c-1.
c-2.
(3-2) Primary Numerical Field (Data Logger and DMM Function)
d-1.
d-2.
: Display of the current Function value
: Display numerical readings. The display updates four times per second
d-3.
measurement similar to a traditional analog meter needle
d-4.
d-5.
: AUTO range. The default for “RANGE” is auto-range
: Display of the current Function indicator
(3-3) Display of Datalogger info (number of readings, time, and measurement data)
e-1.
e-2.
e-3.
: Logged data Record Number
: Time of logged data
e-4.
e-5.
e-6.
: Current: dd-mm-yyyy
: Current Time: hh:mm:ss
: The analog bar-graph provides a visual indication of
: Displayed or for the sampling type
: Numerical reading
: Logged data.
: (End of Data) shown when last data point has been reached
(3-4) The Data Logger Command Menu
f-1.
f-2.
f-3.
f-4.
: Open the Data Logger Setup mode
: Erase the displayed logged data
: Displays stored readings and buffer statistics
: Start the Data Logger
(3-5) The Setup mode for Data Logger.
g-1.
g-2.
▪
▪
: Sample (interval) Mode
: Peak Detect Mode. The displayed value updates only when a new peak value is
: Set the Measurement Function
: Set the Sampling type, or
detected.
g-3.
: Set the Sampling interval time, 1Sec to 9,999Sec
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Model 381395 Version 1.0 January 2008
g-4. : Set the Start Address for the Data logger
g-5.
: Set the Stop Address for the Data logger
4) DMM mode Displays
(4-1) RECORD MODE
1
2
5
3
2. Product Description
4
c ÆRECORD MODEÆ
PATH: Æ ÆSelects “RECORD MODE”Æ
(1) Date and Time (Data Logger and DMM Function)
c Refer to Data Logger section.
(2) Primary Numerical Field (Data Logger and DMM Function)
d Refer to Data Logger section.
(3) Number of records and the time stamp.
e-1.
maximum value is detected.
e-2.
value is detected.
e-3.
minimum value is detected.
e-4.
e-5.
d Press to open Setup
: The displayed value updates only when a new
: The displayed value updates only when a new average
: The displayed value updates only when a new
: Total number of data.
: Total elapsed time.
(4) The Command Menu for Record mode
f-1.
f-2.
f-3.
(5) The Setup mode for the Record mode
g-1.
: Opens Setup mode for the Record mode
: All data are set to zero.
: Freezes the displayed value.
: Set the Measurement Function
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Model 381395 Version 1.0 January 2008
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