VOLTCRAFT VC-655 BT User manual

VC-655 BT
Digital Multimeter
Quick Guide

General Warranty
We warrant that the product will be free from defects in materials and workmanship
for a period of 3 years (1 year for accessories) from the date of purchase of the
product by the original purchaser from our company. This warranty only applies to
the original purchaser and is not transferable to a third party.
If the product proves defective during the warranty period, we will either repair the
defective product without charge for parts and labour, or will provide a replacement
in exchange for the defective product. Parts, modules, and replacement products
used by our company for warranty work may be new or reconditioned like new. All
replaced parts, modules and products become the property of our company.
In order to obtain service under this warranty, the customer must notify our
company of the defect before the expiration of the warranty period. Customer shall
be responsible for packaging and shipping the defective product to the designated
service centre, a copy of the customers proof of purchase is also required.
This warranty shall not apply to any defect, failure or damage caused by improper
use or improper or inadequate maintenance and care. We shall not be obligated to
furnish service under this warranty a) to repair damage resulting from attempts by
personnel other than our company 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 not our 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 Sales and Service Offices for services.
Excepting the after-sales services provided in this summary or the applicable
warranty statements, we will not offer any guarantee for maintenance declared or
hinted, including but not limited to the implied guarantee for marketability and
special-purpose acceptability. We should not take any responsibilities for any
indirect, special, or consequent damages.

i
Table of Contents
1.Safety Information.............................................................................................................1
Safety Terms and Symbols.............................................................................................................1
General Safety Requirements........................................................................................................2
Measurement Limits...................................................................................................................... 3
Main Input Terminals Measurement Limits.............................................................................................. 3
Current Input Terminal Measurement Limits............................................................................................3
Measurement Category................................................................................................................. 3
2.Quick Start......................................................................................................................... 5
General Inspection.........................................................................................................................5
Dimensions.....................................................................................................................................5
Foot Stool Adjustment...................................................................................................................6
Front Panel Overview.................................................................................................................... 6
Rear Panel Overview......................................................................................................................8
User Interface.................................................................................................................................8
Power On........................................................................................................................................9
Measurement Connections......................................................................................................... 10
Data Record Function.................................................................................................................. 12
Manual Record.........................................................................................................................................12
Auto Record............................................................................................................................................. 12
3.Troubleshooting...............................................................................................................14
4.Appendix.......................................................................................................................... 15
Appendix A: Enclosure.................................................................................................................15
Appendix B: General Care and Cleaning..................................................................................... 15
Appendix C: Line Fuse Replacement........................................................................................... 16

1.Safety Information
1
1. Safety Information
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
injury or loss of life.
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)
Warning, risk of electric shock
Alternating current (AC)
Caution, risk of danger (refer to this
manual for specific Warning or
Caution information)
Both direct and
alternating current
Conforms to European Union
directives
Ground terminal
Chassis Ground
IEC Measurement Category I. The maximum measurable voltage
is 1000 Vpk in the HI -LO terminal.
IEC Measurement Category II. Inputs may be connected to AC
mains power (up to 600 VAC) under Category II overvoltage
conditions.
This product complies with the WEEE Directive (2012/19/EC)
marking equipment. The affixed product label indicates that you
must not discard this electrical/electronic product in
domestic household waste.

1.Safety Information
2
General Safety Requirements
Before any operations, please read the following safety precautions to avoid any
possible bodily injury and prevent this product or any other products connected from
damage. In order to avoid any contingent danger, this product is only used within the
range specified.
Use Proper Power Cord. Use only the power cord supplied with the product and
certified to use in your country.
Product Grounded. This instrument is grounded through the power cord grounding
conductor. To avoid electric shock, the grounding conductor must be grounded. The
product must be grounded properly before any connection with its input or output
terminal.
Limit operation to the specified measurement category, voltage, or amperage
ratings.
Check all Terminal Ratings. To avoid instrument damage and the risk of electric shock,
check all the Measurement Limits and markers of this product. Refer to the user's
manual for the Measurement Limits before connecting to the instrument. Do not
exceed any of the Measurement Limits defined in the following section.
Do not operate without covers. Do not operate the instrument with covers or panels
removed.
Use Proper Fuse. Use only the specified type and rating fuse for this instrument.
Avoid exposed circuit. Do not touch exposed junctions and components when the
instrument is powered.
Do not operate if in any doubt. If you suspect damage occurs to the instrument,
have it inspected by qualified service personnel before further operations.
Use your instrument in a well-ventilated area. Inadequate ventilation may cause
increasing of temperature or damages to the device. Please keep well ventilated and
inspect the intake regularly.
Do not operate in wet conditions. In order to avoid short circuiting to the interior of
the device or electric shock, please do not operate in a humid environment.
Do not operate in an explosive atmosphere.
Keep product surfaces clean and dry.
Only the qualified technicians can implement the maintenance.

1.Safety Information
3
Measurement Limits
The protection circuitry of the multimeter can prevent damage to the instrument and
protect against the danger of electric shock, when the Measurement Limits are not
exceeded. To ensure safe operation of the instrument, do not exceed the Measurement
Limits shown on the front panel, it is defined as follows:
Main Input Terminals Measurement Limits
The Input and COM Input terminals are used for voltage, resistance,
continuity, frequency (period), capacitance, diode, and temperature test measurements.
The Measurement Limit is defined for these terminals:
Input to COM Input Measurement Limit
The measurement limit from Input to COM Input is 1000 VDC or 750
VAC, which is also the maximum voltage measurement. This limit can also be
expressed as 1000 Vpk maximum.
Current Input Terminal Measurement Limits
The measurement limit from 10A input terminal to COM Input terminal is 10 A (DC or
AC).
The measurement limit from μA mAinput terminal to COM Input terminal is 600 mA
(DC or AC).
Note that the current input terminals will always be at approximately the same voltage as
the COM Input terminal.
Measurement Category
The safety rating of the multimeter:
1000 V, CAT I
IEC Measurement Category I. The maximum measurable voltage is 1000 Vpk in the HI -LO
terminal.
600 V, CAT II
IEC Measurement Category II. Inputs may be connected to AC mains power (up to 600
VAC) under Category II overvoltage conditions.
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.

1.Safety Information
4
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 low-
voltage installation. Examples are electricity meters and measurements on primary over
current protection devices and ripple control units.

2.Quick Start
5
2. Quick Start
General Inspection
After you get a new multimeter, it is recommended that you should make a check on the
instrument according to the following steps:
1. Check whether there is any damage caused by transportation.
If it is found that the packaging carton or the foamed plastic protection cushion has
suffered serious damage, do not throw it away first till the complete device and its
accessories succeed in the electrical and mechanical property tests.
2. Check the Accessories
The supplied accessories have been already described in the Appendix A: Enclosure
of this Manual. You can check whether there is any loss of accessories with reference
to this description. If it is found that there is any accessory lost or damaged, please
get in touch with our distributor responsible for this service or our local offices.
3. Check the Complete Instrument
If it is found that there is damage to the appearance of the instrument, or the
instrument cannot work normally, or fails in the performance test, please get in
touch with our distributor responsible for this business or our local offices. If there is
damage to the instrument caused by the transportation, please keep the package.
With the transportation department or our distributor responsible for this business
informed about it, a repairing or replacement of the instrument will be arranged by
us.
Dimensions

2.Quick Start
6
Foot Stool Adjustment
Unfold the foot stool on the bottom of the multimeter.
Front Panel Overview
Figure 2- 1 Front panel overview
Item
Name
Description
1
LCD
Display the user interface
2
Menu selection
Keys
Activate the corresponding menu

2.Quick Start
7
3
Measurement
Function Keys
DC or AC voltage measurements
DC or AC current measurements
Resistance, continuity, and diode measurements
Capacitance measurements
Frequency/Period measurements
Temperature measurements
4
Power button
Turn on/off the multimeter.
5
Range/Direction Keys
When the Range softkey is shown on the right menu, you
can press the key to switch between auto and
manual range. Press or keys to enable manual
range, and increase or decrease the measurement range.
When setting a parameter, press to move the
cursor, press or keys to increase or decrease
the value.
6
Operation Keys
Run/Stop
Start or stop auto trigger. When the trigger is stopped, the
displayed data will be held.
Record
Access menus of manual record and auto record.
See page 12, Data Record Function.
Utility
Set the auxiliary system function, including Language,
Backlight, Clock, Default, and Serial port.
Math
Perform math operations (Max/Min, dB/dBm) on the
measurement results.
Dual
Press this key to display the function list on the right menu,
select a function, if the function is supported, the reading
will be displayed in the Vice Display.
7
Input Terminals
Signal input terminals, used for AC/DC current, voltage,
resistance, continuity, frequency (period), capacitance,
diode, and temperature test measurements.