V&A VA41 User manual

Contents
TITLE PAGE
1. GENERAL INSTRUCTIONS ………………………………………………… 1
1.1 Precaution safety measures ………………………………………………… 1
1.1.1 Preliminary ………………………………………………… 1
1.1.2 During use ………………………………………………… 3
1.2 Symbols ………………………………………………… 4
1.3 Instructions ………………………………………………… 4
2. DESCRIPTION ………………………………………………… 6
2.1 Instrument Familiarization ………………………………………………… 6
2.2 LCD Display ………………………………………………… 7
2.3 Key pad ………………………………………………… 9
3. FUNCTION DESCRIPTION ………………………………………………… 10
3.1 General Functions ………………………………………………… 10
3.1.1 Auto scan mode ………………………………………………… 10
3.1.2 DATA HOLD mode ………………………………………………… 11
3.1.3 Manual ranging and Auto range mode ………………………………………………… 11
3.1.4 True RMS measurement ………………………………………………… 12
3.1.5 Auto power off setting ………………………………………………… 12
3.2 Measurement Functions ………………………………………………… 13
3.2.1 AC and DC Voltage measurement ………………………………………………… 13
3.2.2 Non-contact electric field detector (EF mode) ………………………………………………… 14
3.2.3 Resistance measurement ………………………………………………… 15

TITLE PAGE
3.2.4 Continuity Check ………………………………………………… 16
3.2.5 Diode Test ………………………………………………… 17
3.2.6 Capacitance measurement ………………………………………………… 18
3.2.7 Current measurement ………………………………………………… 19
4. TECHNICAL SPECIFICATIONS ………………………………………………… 20
4.1 General specifications.. ………………………………………………… 20
4.2 Measurement specifications ………………………………………………… 20
4.2.1 AC Voltage ………………………………………………… 21
4.2.2 DC Voltage ………………………………………………… 21
4.2.3 Resistance ………………………………………………… 22
4.2.4 Continuity Check ………………………………………………… 22
4.2.5 Diode Test ………………………………………………… 22
4.2.6 Capacitance ………………………………………………… 22
4.2.7 Current ………………………………………………… 23
4.2.8 Linear frequency ………………………………………………… 23
5. MAINTENANCE ………………………………………………… 24
5.1 General maintenance ………………………………………………… 24
5.2 Fuse replacement ………………………………………………… 24
5.3 Battery replacement ………………………………………………… 25
6. ACCESSORIES ………………………………………………… 25

6000 COUNTS DIGITAL MULTIMETER
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1. GENERAL INSTRUCTIONS
This instrument complies with IEC 61010-1：2001, CAT  1000V and CAT Ⅵ600V overvoltage standards. See
Specifications.
To get the best service from this instrument, read carefully this user's manual and respect the detailed safety
precautions.
International symbols used on the Meter and in this manual are explained in chapter 1.2.
1.1 Precautions safety measures
1.1.1 Preliminary
*As the possibilities of high transient overvoltages occurred in today’s power systems increase, more stringent
safety standards are set for the electrical test equipment. Transients on electrical systems(power grid, feeder or
branch circuits) will trigger a series of incidents that may result in serious personal injury. To protect you against
transients, safty must be built into the test equipment.

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Overvoltage
cate
g
or
y
In brief Examples
CATⅠElectronic
• Protected electronic equipment.
• Equipment connected to (source) circuits in which measures are taken to
limit transient overvoltages to an appropriately low level.
• Any high-voltage, low-energy source derived from a highwinding
resistance transformer, such as the high-voltage section of a copier.
CATⅡ
Single-phase
receptacle
connected loads
• Appliance, portable tools, and other household and similar loads.
• Outlet and long branch circuits.
• Outlets at more than 10 meters (30 feet) from CAT III source.
• Outlets at more that 20 meters (60 feet) from CAT IV source.
CAT Ⅲ
Three-phase
distribution,
including
single-phase
commercial lighting
• Equipment in fixed installations, such as switchgear and polyphase
motors.
• Bus and feeder in industrial plants.
• Feeders and short branch circuits, distribution panel devices.
• Lighting systems in larger buildings.
• Appliance outlets with short connections to service entrance.
CAT Ⅵ
Three-phase at
utility connection,
any outdoor
conductors
• Refers to the “origin of installation”; i.e., where low-voltage connection is
made to utility power.
• Electricity meters, primary overcurrent protection equipment.
• Outside and service entrance, service drop from pole to building, run
between meter and panel.
• Overhead line to detached building, underground line to well pump.
*When using this Multimeter, the user must observe all normal safety rules concerning:
―protection against the dangers of electric current.
―protection of the Multimeter against misuse.
*For your own safety, only use the test probes supplied with the instrument. Before use, check that they are in good
condition.

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1.1.2 During use
*If the meter is used near noise generating equipment, be aware that display may become unstable or indicate large
errors.
*Do not use the meter or test leads if they look damaged.
*Use the meter only as specified in this manual; otherwise, the protection provided by the meter may be impaired.
*Use extreme caution when working around bare conductors or bus bars.
*Do not operate the meter around explosive gas, vapor, or dust.
*Verify a Meter's operation by measuring a known voltage. Do not use the Meter if it operates abnormally. Protection
may be impaired. When in doubt, have the Meter serviced.
*Uses the proper terminals, function, and range for your measurements.
*When the range of the value to be measured is unknown, check that the range initially set on the multimeter is the
highest possible or, wherever possible, choose the autoranging mode.
*To avoid damages to the instrument, do not exceed the maximum limits of the input values shown in the technical
specification tables.
*When the multimeter is linked to measurement circuits, do not touch unused terminals.
*Caution when working with voltages above 60Vdc or 30Vac rms. Such voltages pose a shock hazard.
*When using the probes, keep your fingers behind the finger guards.
*When making connections, connect the common test lead before connecting the live test lead; when disconnecting,
disconnect the live test lead before disconnecting the common test lead.
*Before changing functions, disconnect the test leads from the circuit under test.
*For all dc functions, including manual or auto-ranging, to avoid the risk of shock due to possible improper reading,
verify the presence of any ac voltages by first using the ac function. Then select a dc voltage range equal to or
greater than the ac range.
*Disconnect circuits power and discharge all high-voltage capacitors before testing resistance, continuity, diodes, or
capacitance.
*Never perform resistance or continuity measurements on live circuits.
*Before measuring current, check the meter's fuse and turn off power to the circuit before connecting the meter to
the circuit.

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*In TV repair work, or when carrying out measurements on power switching circuits, remember that high amplitude
voltage pulses at the test points can damage the multimeter. Use of a TV filter will attenuate any such pulses.
*Use just one 6F22 battery, properly installed in the Meter's battery case, to power the Meter.
*Replace the battery as soon as the battery indicator ( ) appears. With a low battery, the Meter might produce false
readings that can lead to electric shock and personal injury.
*Do not measure voltages above 1000V in Category III, or 600V in Category Ⅳinstallations.
*Do not operate the Meter with the case (or part of the case) removed.
1.2 Symbols:
Symbols used in this manual and on the instrument:
Caution:refer to the instruction manual. Incorrect use may result in damage to the
device or its components.
~ AC (Alternating Current)
DC (Direct Current)
AC or DC
Earth ground
Double insulated
Fuse
Conforms to European Union directives
1.3 Instructions
*Remove test leads from the Meter before opening the Meter case or battery cover.
*When servicing the Meter, use only specified replacement parts.
*Before opening up the instrument, always disconnect from all sources of electric current and make sure you are not
charged with static electricity, which may destroy internal components.

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*Any adjustment, maintenance or repair work carried out on the meter while it is live should be carried out only by
appropriately qualified personnel, after having taken into account the instructions in this present manual.
*A "qualified person" is someone who is familiar with the installation, construction and operation of the equipment
and the hazards involved. He is trained and authorized to energize and de-energize circuits and equipment in
accordance with established practices.
*When the instrument is opened up, remember that some internal capacitors can retain a dangerous potential even
after the instrument is switched off.
*If any faults or abnormalities are observed, take the instrument out of service and ensure that it cannot be used
until it has been checked out.
*If the meter is not going to be used for a long time, take out the battery and do not store the meter in high
temperature or high humidity environment.

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2. DESCRIPTION
2.1 Instrument Familiarization
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
1
2
3
4
5
67
8
Figure 2-1
The front panel is shown as in Figure 2-1,
explanation being as follows:
○,1 LCD display
Used for displaying the measuring results and various
symbols.
○,2 Keypad
Measurement function keys.
○,3 Rotary switch
Used for selecting measurement functions.
○,4 VΩ
Terminal receiving the red test lead for voltage,
resistance, capacitance, diode and continuity
measurements.
○,5 uA/mA
Terminal receiving the red test lead for μA, mA
measurements.
○,6 A
Terminal receiving the red test lead for 6A,10A
measurements.
○,7 COM
Terminal receiving the black test lead as a common
reference.
○,8 EF-detection area.

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2.2 LCD Display
Figure 2-2
1
2
3
5
4
678910 11
12
13
14
15
17
16

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LCD screen is shown as in Figure 2-2, with its every symbol’s meaning shown as in the Table 1:
No. Symbol Meaning
1 Indicator for auto power off
2 Indicates negative readings
3 Indicator for AC voltage or current
4 Indicator for DC voltage or current
5 Unsafe voltage. voltage≥30V, or voltage overload(OL)
6 SCAN When auto scan mode is selected
7 AUTO The meter is in the Autorange mode in which the meter automatically selects the
range with the best resolution.
8 MANU The meter is in the Manual Range mode in which the user selects the range.
9 HOLD When HOLD function is enabled. When delay-hold is selected, the HOLD symbol
will be blinking for 6 seconds.
10 MAX Display maximum data
11 MIN Display minimum data
12 Low battery indication (Note: When this symbol appears, it means that the battery
needs to be replaced.
)
13 The meter is in Diode Test mode.
14 The meter is in Continuity Check mode.
15 μmVA,nμmF,KMΩHz Measurement units
16 This symbol means that the input is too large for the selected range.
17 EF The meter is in non-contact electric field detector mode.

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2.3 Keypad
2.3.1 SELECT
（1） When the meter is turned off and the rotary switch is not in position of OFF, press SELECT key for 2 seconds
to turn on the meter and press the key once more >2sec. to turn the power OFF.
（2） At EF/VOLT position
Switches between Auto scan mode, AC and DC voltage, Non-contact electric field detector (EF mode).
（3） At Ωposition
Switches between Auto scan mode, Resistance measurement, Continuity check, Diode Test and Capacitance
measurement.
（4） At A mA μAposition
Switches between Auto scan mode, DC and AC current.
（5） Power-up Option
Disables automatic power-off feature.
2.3.2 RANGE
At ACV, DCV, Ω,, A, mA and μA
1. Press RANGE to enter the manual ranging mode.
2. Press RANGE to step through the ranges available for the selected function.
3. Press and hold RANGE for 2 seconds to return to autoranging.
2.3.3 HOLD
Press it to enter the Data Hold mode. Used to maintain the measurement data unchanging, by pressing the key
again it will exit the Data Hold mode.
Pressing this key and last for 2 seconds,the meter will delay for 6 seconds,than enters HOLD mode.
2.3.4 ~Hz
During the voltage or current measurements, by pressing ~Hz key the meter will enter the linear frequency
measurement state. At this time what being measured is the frequency of voltage or current. By pressing this key

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again it will return the voltage or current measurement state
2.3.5 MAX/MIN
This key is for measuring maximum value and minimum value.
1. Press it to enter Max/Min mode and simultaneously display the maximum value.
2. Press it again; the LCD will display the Minimum Value.
3. Press it again; the LCD will display the current Value.
4. Press and hold it for two seconds, the meter will return to normal measurement state.
2.3.6
Press the this key, backlight on; press it again, backlight off.
3. FUNCTION DESCRIPTION
3.1 General Functions
3.1.1 Auto scan mode
When the meter is turned on, it will be power-on reset to auto scan mode. The meter automatically selects the
appropriate measurement mode and range according to the measured object. In Auto Scan mode, press RANGE,
HOLD, MAX MIN keys are valid, press SELECT key to exit Auto Scan mode. In automatic scan mode, full automatic
measurement shown as in the Table 2:
Measurement Auto ranging
DCV 1.0mV~1000V
ACV 300.0mV~1000V (60Hz)
Resistance 0
Ω
~6.000M
Ω
Capacitance 1.000nF~600.0uF
DCμA 0.1uA~6000uA
ACμA 30.0uA~6000uA (60Hz)
DCmA 0.01mA~600.0mA

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ACmA 3.00mA~600.0mA (60Hz)
DCA 0.01A~10A
ACA 3.00A~10A (60Hz)
3.1.2 DATA HOLD mode
Data Hold mode makes the meter stop updating the display. Enabling Data Hold function in autorange mode makes
the meter switch to Manual ranging mode, but the full-scale range remains the same. Data Hold function can be
cancelled by changing the measurement mode, pressing RANGE key, or push HOLD key again.
To enter and exit the Data Hold mode:
1. Press HOLD key (short press). Fixes the display on the current value, HOLD is displayed.
2. A second short press returns the meter to normal mode.
3. Pressing HOLD key and last for 2 seconds, the HOLD symbol in LCD will be blinking and the meter will delay for 6
seconds, than enters HOLD mode.
3.1.3 Manual ranging and Auto range mode
The Meter has both manual ranging and auto range options.
* In the auto range mode, the Meter selects the best range for the input detected. This allows you to switch test points
without having to reset the range.
* In the manual ranging mode, you select the range. This allows you to override auto range and lock the meter in a
specific range.
* The Meter defaults to the auto range mode in measurement functions that have more than one range. When the
Meter is in the auto range mode, AUTO is displayed.
To enter and exit the manual range mode:
1. Press RANGE key. The Meter enters the manual ranging mode. AUTO turns off. Each presses of RANGE key
increments the range. When the highest range is reached, the Meter wraps to the lowest range.
NOTE: If you manually change the measurement range after entering the Data Hold modes, the Meter exits this
mode.
2. To exit the manual ranging mode, press and hold down RANGE key for two seconds. The Meter returns to the
auto range mode and AUTO is displayed.

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3.1.4 TRUE RMS measurement
All the measurement values of the true RMS meter on the AC voltage and AC current are true root-mean-square
values. The basic meter can only measure the AC average value.
3.1.5 Auto power off setting
When the meter is powered on, it is under auto power off mode. The meter will power itself off after 10 minutes if
there is not any operation. Press SELECT for 2 seconds to wake the meter up. You can also rotate the rotary switch
to the position of OFF and then restart the meter.
To disable the auto power off function, hold down the SELECT key while turning the meter on. Then the icon will
disappear.

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3.2 Measurement Functions
3.2.1 AC and DC Voltage measurement V
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
AC Voltage
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
DC Voltage
Figure 3-1 Measuring AC and DC Voltage
To avoid electrical shock and/or damage to the
instrument, do not attempt to take any voltage
measurement that might exceeds 1000Vdc or
1000Vac rms.
To avoid electrical shock and/or damage to the
instrument, do not apply more than 1000Vdc or
1000Vac rms between the common terminal and the
earth
g
round.
Voltage is the difference in electrical potential between two
points.
The polarity of ac (alternating current) voltage varies over
time; the polarity of dc (direct current) voltage is constant.
To measure ac or dc voltage (set up and connect the Meter
as shown in Figure 3-1):
1 Set the rotary switch to the position of EF/VOLT.
2 Select auto scan mode or press SELECT key to select
between AC and DC voltage mode.
3 Connect the black and red test leads to the COM and V
terminals respectively.
4 Connect the test leads to the circuit being measured
5 Read the displayed value.
NOTE:
In case of probe hanging in the air, the voltage inducted by
the test leads may cause unstable readings on the display
screen, but that will not affect the accuracy of measurement.

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3.2.2 Non-contact electric field detector (EF mode)
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
Figure 3-2 Non-contact electric field detector
It should be a long
-
distance in measuring
high-voltage. Pay attention to safety
.
Electric field is a special substance exist in the charge
and the variable ambient magnetic field.
To detector Non-contact electric field (set up and connect
the Meter as shown in Figure 3-2):
1 Set the rotary switch to the position of EF/VOLT.
2 Press SELECT key to select non-contact electric field
detector mode. When no or less electric field is detected, the
LCD shows “EF”.
3 Make the detector in the top of the meter approach to the
wire.If the detector senses electric field, the strength will be
showed on LCD by “-“ not digits type. And the buzzer will
sound. Level 1(weak) is “-“ and the level 4(strong) is “----“.
The buzzer frequency depends on the strength of electric
field also. The Faster beeper means the stronger electric
field (ac voltage) is sensed.
NOTE:
Detection Sensibility：>36V ac rms.
Detection distance：<10cm,It’s related to the source value。

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3.2.3 Resistance measurement
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
Figure3-3 Measuring Resistance
To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and discharge
all high-voltage capacitors before measuring
resistance.
Resistance is an opposition to current flow.
The unit of resistance is the ohm (Ω). The Meter measures
resistance by sending a small current through the circuit.
Because this current flows through all possible paths between
the probes, an in-circuit resistance reading represents the total
resistance of all paths between the probes.
To measure resistance (set up the Meter as shown in figure
3-3):
1. Set the rotary switch to Ωrange.
2. Select auto scan mode or press SELECT key to select
resistance measuring mode.
3. Connect the black and red test leads to the COM and VΩ
terminals respectively.
4. Connect the test leads to the circuit being measured.
5. Read the displayed value.
NOTE:
In case of performing resistance test on circuit board, it is
necessary firstly to turn off the power of the circuit board and
then perform the measurement. As there may be other parallel
circuits, so the displayed value of test is not surely the actual
value of the resistor.

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3.2.4 Continuit
y
Check
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
Figure 3-4 Checking the Continuity
To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and discharge
all high-voltage capacitors before testing for
Continuity.
Continuity is a complete path for current flow.
The beeper sounds if a circuit is complete. These brief contacts
cause the Meter to emit a short beep.
To test for continuity (set up the Meter as shown in Figure 3-4):
1. Set the rotary switch to Ωrange.
2. Select auto scan mode or press the SELECT key to activate
Continuity Check.
3. Connect the black and red test leads to the COM and Ω
terminals respectively.
4. Connect the test leads to the resistance in the circuit being
measured.
5. When the test lead to the circuit is below 30Ω, a continuous
beeping will indicate it.

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3.2.5 Diode Test
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
Figure 3-5 Testing a Diode
To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and discharge
all high-voltage capacitors before testing diodes.
Use the diode test to check diodes, transistors, and other
semiconductor devices. The diode test sends a current through
the semiconductor junction, then measures the voltage drop
across the junction, A good silicon junction drops between 0.5V
and 0.8V.
To test a diode out of a circuit (set up the Meter as shown in
Figure 3-5):
1. Set the rotary switch to Ωmode.
2. Select the auto scan mode or press the SELECT key to
activate Diode Test.
3. Connect the black and red test leads to the COM and VΩ
terminals respectively.
4. For forward-bias readings on any semiconductor
component, place the red test lead on the component's anode
and place the black test lead on the component's cathode.
5. The meter will show the approx. forward voltage of the
diode.
In a circuit, a good diode (Si) should still produce a forward
bias reading of 0.5V to 0.8V; however, the reverse-bias reading
can vary depending on the resistance of other pathways
between the probe tips.

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3.2.6 Capacitance measurement
COM
A
V
mA
uA
A
mA
uA
OFF
EF
VOLT
A
U
T
O
S
C
A
N
Figure 3-6 Measuring Capacitance
To avoid electrical shock and/or damage to the
instrument, disconnect circuit power and discharge
all high-voltage capacitors before measuring
capacitance. Use the dc voltage function to confirm
that the capacitor is discharged.
Capacitance is the ability of a component to store an electrical
charge.
The unit of capacitance is the farad (F). Most capacitors are in
the nanofarad to microfarad range. The Meter measures
capacitance by charging the capacitor with a known current for
a known period of time, measuring the resulting voltage, then
calculating the capacitance. The measurement takes about 1
second per range.
To measure capacitance (set up the Meter as shown in Figure
3-6):
1. Set the rotary switch to Ωrange.
2. Select the auto scan mode or press the SELECT key to
activate capacitance measuring mode.
3. Connect the black and red test leads to the COM and
terminals respectively.
4. Connect the test leads to the capacitor being measured and
read the displayed value.
NOTE:
The meter may take a few seconds to stabilize reading when
measurement on 600uF~60mF. To improve the accuracy of
measurements less than 600nF, subtract the residual
ca
p
acitance of the Meter and leads.