OWON B35(T) User Manual
Digital Multimeter
User Manual
B35(T)
D35(T)
ote: "T" indicates true RMS (optional)
N
WWW.OWON.COM
Mar.2015 edition V1.1
Copyright © Lilliput Company. All rights reserved.
The Lilliput's products are under the protection of the patent rights, including ones which have already
obtained the patent rights and those which are applying for. The information in this manual will
replace all that in the materials published originally.
The information in this manual was correct at the time of printing. However,
to improve products and reserves the rights to change specification at any time without notice.
is the registered trademark of the Lilliput Company.
will continue
Fujian Lilliput Optoelectronics Technology Co.,Ltd.: The Mansion of Optoelectronics, No.19, Heming
Road, Lantian Industrial Zone, Zhangzhou, Fujian, China
Te l :+86-596-2130430 Fax:+86-596-2109272
Web:
www.owon.com Mail: service@owon.com.cn
General Warranty
Lilliput warrants that the product will be free from defects in materials and workmanship
for a period of 1 year from the date of purchase of the product by the original purchaser
from the Lilliput Company. This warranty only applies to the original purchaser and is not
transferable to the third party, and does not apply to fuses, disposable batteries or to any
product which has been misused, altered, neglected or damaged by accident or
abnormal conditions of operation or handling.
If the product proves defective during the warranty period, Lilliput either will repair the
defective product without charge for parts and labor, or will provide a replacement in
exchange for the defective product. Parts, modules and replacement products used by
Lilliput for warranty work may be new or reconditioned to like new performance. All
replaced parts, modules and products become the property of Lilliput.
In order to obtain service under this warranty, Customer must notify Lilliput of the defect
before the expiration of the warranty period. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Lilliput,
and with a copy of customer proof of purchase.
This warranty shall not apply to any defect, failure or damage caused by improper use or
improper or inadequate maintenance and care. Lilliput shall not be obligated to furnish
service under this warranty a) to repair damage resulting from attempts by personnel
other than Lilliput 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-Lilliput 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.
Please contact the nearest Lilliput's Sales and Service Offices for services or a complete
copy of the warranty statement.
For better after-sales service, please visit www.owon.com and register the purchased
product online.
Excepting the after-sales services provided in this summary or the applicable warranty statements,
Lilliput will not offer any guarantee for maintenance definitely declared or hinted, including but not
limited to the implied guarantee for marketability and special-purpose acceptability. Lilliput should
not take any responsibilities for any indirect, special or consequent damages.
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Table of Contents
1.Saf e ty Information .................................................................................................... 1
Safety Considerations ............................................................................................................... 1
Measurement Category ............................................................................................................ 3
Safety Terms and Symbols ........................................................................................................ 4
2.General Characteristics ............................................................................................. 5
3.Quick Start ................................................................................................................ 6
General Inspection ................................................................................................................... 6
Install the Batteries .................................................................................................................. 6
Adjusting the Tilt Stand ............................................................................................................ 7
Power On.................................................................................................................................. 7
Sleep Mode .............................................................................................................................. 7
Backlight Control ...................................................................................................................... 7
Selecting the Range .................................................................................................................. 8
Multimeter in Brief ................................................................................................................... 8
Front panel ............................................................................................................................................... 8
Rotary switch ............................................................................................................................................ 9
Keypad ...................................................................................................................................................... 9
Display screen......................................................................................................................................... 10
Input terminals ....................................................................................................................................... 12
4.Making Measurements ............................................................................................ 13
Measuring AC or DC Voltage................................................................................................... 13
Measuring Resistance ............................................................................................................. 13
Testing Diodes ........................................................................................................................ 14
Testing for Continuity ............................................................................................................. 14
Measuring Capacitance .......................................................................................................... 14
Measuring Frequency ............................................................................................................. 15
Measuring Transistor .............................................................................................................. 15
Measuring Temperature ......................................................................................................... 15
Measuring DC or AC Current ................................................................................................... 16
5.Multime ter Features ................................................................................................ 17
Data Hold Mode ..................................................................................................................... 17
ii
Capturing Max. and Min. Values ............................................................................................ 17
Making Relative Measurements ............................................................................................. 17
Buzzer Feature ........................................................................................................................ 18
6.Bluetooth Functio n – B35(T) only ............................................................................ 19
How to Connect ...................................................................................................................... 19
User Interface ......................................................................................................................... 21
Operations .............................................................................................................................. 22
7.Te c hnica l Spe c ifica tio ns .......................................................................................... 24
8.Appendix ................................................................................................................. 26
Appendix A: Enclosure ............................................................................................................ 26
Appendix B: General Care and Cleaning ................................................................................. 26
Appendix C: Fuse Replacement .............................................................................................. 27
1.Safety Information
1
1. Safety Information
Safety Considerations
Before any operations, please read the following safety precautions to avoid any
possible bodily injury and prevent damage to this product or any other products
connected. To avoid any contingent danger, use this product only as specified.
Limit operation to the specified measurement category, voltage, or amperage ratings.
Do not use the multimeter if it is damaged. Before you use the multimeter, inspect
the case. Look for cracks or missing plastic. Pay particular attention to the insulation
surrounding the connectors.
Do not use the test leads provided for other products. Use only the certified test
leads specified for this product.
Inspect the test leads for damaged insulation or exposed metal.
Before use, verify the multimeter's operation by measuring a known voltage.
Only the qualified technicians can implement the maintenance.
Always use the specified battery type. The power for the multimeter is supplied with
two standard AA 1.5 V batteries. Observe the correct polarity markings before you
insert the batteries to ensure proper insertion of the batteries in the multimeter.
Check all Terminal Ratings. To avoid fire or shock hazard, check all ratings and
markers of this product. Refer to the user's manual for more information about
ratings before connecting to the multimeter.
Do not operate the multimeter with the cover or portions of the cover removed or
loosened.
Use Proper Fuse. Use only the specified type and rating fuse for the multimeter.
Do not operate if in any doubt. If you suspect damage occurs to the multimeter,
have it inspected by qualified service personnel before further operations.
To avoid electric shock, do not operate this product in wet or damp conditions.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Do not apply more than the rated voltage (as marked on the multimeter) between
terminals, or between terminal and earth ground.
When measuring current, turn off the circuit power before connecting the
multimeter in the circuit. Remember to place the multimeter in series with the
circuit.
When servicing the multimeter, use only the specified replacement parts.
Use caution when working above 60 V DC, 30 V AC RMS, or 42.4 V peak. Such
voltages pose a shock hazard.
1.Safety Information
2
When using the test leads, keep your fingers behind the finger guards on the test
leads.
Remove the test leads from the multimeter before you open the battery cover.
To avoid false readings, which may lead to possible electric shock or personal injury,
replace the battery as soon as the low battery indicator
Disconnect circuit power and discharge all high-voltage capacitors before testing
appears and flashes.
resistance, continuity, diodes, or capacitance.
Use the proper terminals, function, and range for your measurements. When the
range of the value to be measured is unknown, set the rotary switch position as the
highest range, choose the auto ranging mode. To avoid damages to the multimeter,
do not exceed the maximum limits of the input values shown in the technical
specification tables.
Connect the common test lead before you connect the live test lead. When you
disconnect the leads, disconnect the live test lead first.
Before changing functions, disconnect the test leads from the circuit under test.
1.Safety Information
3
Measurement Category
The multimeter has a safety rating of 1000 V, CAT III.
Measurement category definition
Measurement CAT I applies to measurements performed on circuits not directly
connected to the AC mains. Examples are measurements on circuits not derived from the
AC mains and specially protected (internal) mains- derived circuits.
Measurement CAT II applies to protect against transients from energy-consuming
equipment supplied from the fixed installation, such as TVs, PCs, portable tools, and
other household circuits.
Measurement CAT III applies to protect against transients in equipment in fixed
equipment installations, such as distribution panels, feeders and short branch circuits,
and lighting systems in large buildings.
Measurement CAT IV applies to measurements performed at the source of the lowvoltage installation. Examples are electricity meters and measurements on primary over
current protection devices and ripple control units.
1.Safety Information
4
Safety Terms and Symbols
Safety Terms
Terms in this Manual. The following terms may appear in this manual:
Warning: Warning indicates the conditions or practices that could result in
personal injury or death.
Caution: Caution indicates the conditions or practices that could result in
damage to this product or other property.
Terms on the Product. The following terms may appear on this product:
Danger: It indicates an injury or hazard may immediately happen.
Warning: It indicates an injury or hazard may be accessible potentially.
Caution: It indicates a potential damage to the instrument or other property might occur.
Safety Symbols
Symbols on the Product. The following symbol may appear on the product:
Direct current (DC)
Alternating current (AC)
Both direct and alternating
current
Ground terminal
Conforms to European Union
directives
Fuse
Caution, risk of danger (refer to this
manual for specific Warning or
Caution inf ormation)
Category II overvoltage protection
Category III overvoltage protection
Category IV overvoltage protection
Equipment protected throug hout
by double i nsulati on or
reinforced insulation
2.General Characteristics
5
5
3
6
1
3
2
3
3
4
2. General Characteristics
Features and benefits:
Data transferring via Bluetooth, interacting with mobile device to read
measurements, analyze via special chart mode, remote control, voice-out feature;
voice warning supported, which enhances measurement safety (B35(T) only);
Larger display, easier data-reading; analog bar graph is displayed synchronously;
Multi-connection (more than one device) supported via mobile APP;
Temperature measuring function;
Backlit-powered screen, more suitable for dark measurement environment;
Smart power-off function, extending battery life;
Thin-tipped test lead (optional) to measure the pins of small package device;
True RMS value available (only in B35T and D35T).
digit reading, achieving higher measurement accuracy than
counterparts;
or
digit
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