USERS
MANUAL
DIGITAL MULTIMETER
Before
using
the
instrument,please
read
carefully.and save
ti well
fo~
future using.
....
Table
of
Contents
1. Overview
1.1 Safety information 1
1.1.1 Safety instructions
1
1.1.2 Safety
notices
1
1.1.3 Safety
symbols
4
1.1.4 Safety
maintenance
habits
4
1.2
Input
protection
measures
5
2. Instrument illustration
2.1
Instrument
illustration
6
2.2 Display
symbol
description
7
2.3 Function key description
10
2.4
Input
socket
description
.10
2.5
Attachments
11
3. Operation Guide
3.1 Regular
operation
11
· 3.1.1 Reading hold
mode
11
3.1.2 Backlight
and
lighting function
12
3.1.3
Automatic
shutdown
function
12
3.2 Measurin_g
guide
13
!I
-
-----
,'
. - . . . -
-.
'
,'
3.2.1 Measuring
AC
and
DC
voltage
3.2.2 Measuring resistance
3.2.3 Measuring
diode
3.2.4 Buzzer connection/continuity
test
3.2.5 Measuring capacitance
3.2.6 Measuring frequency
3.2.7 Measuring
current
3.2.8
NCV
test
4. Technical indicators
4.1 Comprehensive indicators
4.2 Precision indicators
4.2.1
DC
voltage
4.2.2
AC
voltage
4.2.3 Frequency
4.2.4 Resistance
4.2.5 Diode
4.2.6 Buzzer connection/disconnection
4.2.7 Capacitance
4.2.8
DC
current
4.2.9
AC
current
5. Instrument maintenance
5.1 General
maintenance
5.2 Replace
the
battery
13
14
15
16
18
19
19
21
21
23
23
23
24
24
25
26
26
27
27
29
30
I. Overview
The
digital multimeter
is
designed and produced according
to
safety requirements on electronic measuring instrument
and handheld digital multimeter
of
international electrician
safety standard
IEC
- 61010.
It
complies with
600V
CAT
Ill of
IEC61010. Ill
and pollution
level
2 requirements. Before using this instrument, please
read
the
user manual carefully and pay attention
to
rel
ated
works afety standards.
1.1 Safety Information
1.1.1 Safety instructions
• When using this instrument, the user must comply with
all
standard safety rules about the following two aspects:
A Safety rules about electric shock.
B Safety rules on prevention of error use of instrument.
•
In
order
to
guarantee your personal safety, please use the
test pens provided with
the
instrument. Before use, check
and guarantee they are
in
good conditions.
1.1.2 Safety notices
•
If
the
instrument
is
used near the equipment with larger
electromagnetic interference, the instrument reading
will
be unstable, and even large error may occur.
•.
- .
-~-~=~
--~---..-
----
. - -·-i
,--
-
-_
---
- -
--
-·
~c-
, 1
r-
--
---
;-
- -
--
._-::_-=.;=_ ~ -
-------
,,.
-I
• When instrument
or
pen
appearance is damaged,
do
not
use.
• When using the instrument incorrectly, safety function
provided by the instrument may validate.
• When working around exposed conductor
or
bus, be careful.
•
It
is
forbidden
to
use
the instrument near explosive
gas,
steam
or
dust.
e
lt
is
required
to
use
correct input end, function and range
for
measurement.
•
The
input value shall
not
exceed the input limit regulated by
each range,
to
avoid damaging the instrument.
• When the instrument
is
connected
to
the line being
measured,
do
not touch the
input
terminal not in
use
.
• When the meas~red voltage exceeds 60Vdc
or
30Vac
RMS,
operate carefully
to
prevent electric shock.
• When
use
test pens
for
measurement,
put
your fingers at the
back of the test pen protective ring.
• Before changing the range, make sure the test
pens
are
removed from the circuit being measured.
• For all
DC
functions, in order
to
avoid the risk
of
electric
shock due
to
possible incorrect readings, please
use
the
AC
function first
to
confirm the existence
of
any
AC
voltage.
Then, select a
DC
voltage range equal
to
or
greater than
AC
voltage.
• When conducting resistance, diode, capacitance
measurement
or
continuity test,
it
is
required
to
cut
off
the
power supply
of
the circuit being tested, and discharge all
high-voltage capacitors in the circuit being tested.
•
It
is
not allowed
to
conduct continuity test on electrified
circuit.
• Before conducting current measurement, first check the
insurance tube
of
the instrument. Before connecting the
instrument
to
the circuit being measured, first shut down
the power supply
of
the circuit being measured.
• When repairing
TV
set
or
measuring power conversion
circuit, be careful
of
high amplitude voltage pulse in the
circuit being measured,
to
avoid any damage
to
the
instrument.
•
The
instrument
uses 4 1.SV
AAA batteries, and all batteries
shall be installed in the battery box
of
the instrument
correctly.
• When undervoltage symbol
(A]
appears, change the
battery immediately. Insufficient battery may
cause
error
reading of the instrument, which may
cause
electric shock
or
personal injury.
• Measurement
CAT.
Ill
voltage shall
not
exceed 600V
_ - - -
-:-
- 2
--..
-i
3 _ - j
./
' (
..
••
-.....
y
~
- -
--
- .
during measurement;
• When the instrument shell (or part
of
the shell)
is
being
dismantled,
do
not
use
the instrument.
1.
1.3
Safety symbols:
Instrument body and symbols used
in
the user manual:
For warnings and important safety signs, refer
to
the user manual before using. Misuse may
cause
damages
to
equipment
or
its parts.
AC
DC
AC
or
DC
Ground
Double insulation protection
Fuse
Comply
with
European Union instructions
Category
m 600V over-voltage protection
1.1.4 Safety maintenance habits
• When opening instrument shell
or
dismantling battery cover,
plug
out
the test pens
first
I
• During maintenance
of
instrument,
use
specified
replacement parts.
• Before opening the instrument, cut
off
all
related power
supply, meanwhile guarantee you're
not
statically electrified
to
avoid damaging components
of
the instrument.
•
The
calibration and maintenance
of
instrument could only
be
done by special personnel.
• When opening the instrument, note some capacitance inside
the instrument may still have dangerous voltage even after
power-off.
•
If
any abnormality of the instrument
is
observed, stop the
instrument immediately and send
for
maintenance.
Guarantee
to
use
only after qualified by inspection.
• When
not
in
use
for
a long time, take down the batteries,
and avoid storing them in high temperature and high
humidity.
1.2
Input
protection
measures
• During voltage measurement, the withstand max.
input
voltage
is
DC
600V
or
AC
600V.
• During frequency, resistance,
on-off
and diode measurement,
AC
voltage
of
600V
or
voltage
of
equivalent
RMS
could
be
withstood.
• During measurement
of
µA
current and mA current, protect
./
. I - -
-.
-
__
-.
-
-~
- -
-~--·-
•
--·
via
protective tube (F600mN600V).
2. Instrument illustration
The
instrument
is
a handheld small volume measuring digital
multimeter with true
RMS.
It
has a LCD
digital display,
back
light and lighting, which
is
easy
for
users
to
read.
It
has
overload protection and battery under voltage indicator. No
matter for professional personnel, factories, schools, fans or
family
use,
it
is
an
ideal multi-function instrument.
~-
-
~-·
- - -
~
----
~~
~-
-
..
--
-
--,
Instrument
appearance
(1)
Non-contact voltage inducing
area
(2)
Non-contact voltage
indicator
(3)
LCD
display (4) Button (5) Rotary switch
(6)
Input
socket
2.2 Display symbol description
r
;r,cm,ifffj'
I
!
~a.a.a.a
l!lD
MkQHz%,imAVF
Fig
. 1 Display
Table
1 Display Symbol
Symbol
Description
CII
Battery
undervoltage indicator/battery low.
&.
In
order
to
avoid error reading:which may
cause electric shock or human
Injury,
when
low voltage symbol
of
the
battery appears,
replace the battery immediately.
Automatic shutdown function indicator
-
Negative input polarity indication
Table 1 Display Symbol (Continued)
~
AC
input indication
V.
mv
V:
V.
the
unit
of
voltage
.
mV:
mV.
lx10-
3
or
0.001
V.
DC
DC
input indication
=-:-:
01))
The instrument
is
in on-off
test
mode.
A:
A.
the
unit
of
current
A,mA,
11A
mA:
mA.
1x10·3 or
0.001
A.
*
The instrument
is
in
diode
test
mode
.
!IA:
).IA
, lxlO"'
or
0.000001
A.
-
Indicate automatic range
mode
..
Q:
Ohm,
the
unit
of
resistance.
-
The instrument
is
in
data hold mode.
n.lcn,Mn
kn:
kilo-ohm, 1000 ohms.
%
Duty ratio
NCV
The instrument
is
in
non-contact
AC
voltage detection
Mo:
Meg-ohm, 1000,000 ohms.
MkHz
HZ:
Hertz,theunitoffrequency.
KHZ:
Kilohertz, lx103 Hertz.
MHz;
Megahertz, lx106
or
1000
kilohertz.
F:
F,
the unit of capacitance.
mf:
mf, l.xlQ-Jor 0.001 F
mF,pF,
nF
!If:
pF ,
1x10-6
or
0.000001 F
.••
nF:
nF,
lx10"'or0.000000001
F.
~
- J
8 • 9
.I
..,;
--
2.3 Function key description
Key
E_ul!_~t
~ nTdesfr
iption
Function selection
key,
i.e.
SEL
Voltage
or
current:
ACV/DCV
ACA/DCA
......
,in
: Select diode or buzzer on-off
mode
or
resistance
HOLD
When this key
is
pressed,
the
instant measured
value
is
held. Press again to cancel this function.
When hold the
key
for above 2 seconds,
the
light will turn on; long press for more than 2
0/~cf.·
seconds, to
tum
off
the
light.
If
this key
is
not
pressed,
it
will turn off automatically after 15
seconds. Short
press, to
switch on/off
the
backlight.
AC
voltage or
AC
current: Under
the
AC
voltage
or
AC
current measurement state, press this
key
to select
ACV
/HZ/% or
ACA/HZ/%
measurement
HZ/%
mode.
Frequency
measurement: Select
HZ
or
%
measurement mode.
2.4
Input
socket
description
-=~,..,..
1J.'!e~t
socKet
_a
Description
'
r
I
I
L
All
measured
public input
terminals are
COM
connected
to
the
black
test
pen or public
output
plug of
the
special multi-function
test
socket.
........
Positive input terminal of capacitance, diode
ol))LlveQ
measurement, buzzer on-off test,
live
line
test
V Hz%pA I
voltage, resistance, frequency, duty ratio, µ A and
mA
mA
(connected
to
red
test
pen).
10A
Positive
)nput
terminal
of
current
10A
(connected to
red
test pen).
2.5
Attachments
(1) User manual
(2)
Test pens
1 manual
One pair
3.
Operation Guide
3.1 Regular operation
3.1.1 Reading hold mode
In
reading hold mode, the current reading could be held on
the
display. Change measuring function gear
or
press
HOLD
again
to
exit reading hold mode.
To
enter
or exit reading hold mode:
1.
Press
"HOLD"
key,
the
reading would be hold and
the·
la·
11
1
.
----
I
symbol would display on
the
LCD
display
at
the same time.
2. Press
"HOLD"
key
again
to
restore
the
instrument to normal
measurement state.
3
.1
.2 Backlight and lighting function
The instrument
is
configured with backlight and lighting
function,
so
that
users could read measurement results
accurately even
unde;
unsound lighting conditions. The
operation of turning on
or
off backlight
is
as follows:
1.
Long
press
the
a/·:/1
,
key
for above 2 seconds, to turn on the
light; short press the turn on
the
backlight.
2. Long press
the
0
/-:/f.
key
for above 2 seconds aga in, turn off
the
light manually, and short press
to
turn off
the
backligh
t;
or
the
backlight and light
will
turn off automatically after about
15 seconds.
3.1
.3 Automatic shutdown function
If
there's no operation within
about
15 minutes after startup,
the
instrument
will
make a
Di-Di
sound
to
prompt
the
automatic shutdown of power supply, and enter sleep state.
In
automatic shutdown mode, press
SEL
key to restart.
3.2 Measuring
guide
3.2.1 Measuring
AC
and
DC
voltage
_&
-
It
is
not allowed
to
measure any voltage higher than
600V
DC
or 600V
AC
rms,
to avoid electric shock
and/
or damaged instrument.
It
is
not allowed to apply a voltage over 600V
DC
Or
600V
AC
r~s
on common port and The ground, to
avoid electric shock andor damaged instrument.
The
DC
voltage range of
the
instrument is: 600.
0mV
, 6.
000V,
60.
00V
and 600.0V;
the
AC
voltage range is: 6.
000V,
60.
00V
and 600.0V.
Measure
AC
or
DC
voltage:
1.
Turn
the
rotary switch
to~
and press "
SEL" key
to
switch
DC
or
AC
voltage function.
2. Connect the black
test
pen and
the
red
test
pen to
COM
input socket and V input socket.
3.
Use
the
test pen
to
measure
the
voltage of
the
circuit
to
be tested .
(In
parallel connection with
the
circuit
to
be
tested)
4.
Read the measured voltage from
the
LCD
display. When
measuri
ng
DC
voltage,
the
display
will
display the voltage
polarity connected to
the
red pen.
12 l
13
-
-·
Note:
(1)
In
DC
600mV and
AC
6V
range, even
if
there' s no input
or
test pen connected, the instrument will have several
displays, in this
case,
short circuit the "V -
n"
and
"COM" ,
to
make the instrument display zeroing.
(2)
Under
AC
voltage function,
press
HZ/%
key
to
measure the
frequency
of
AC
voltage source (0HZ~ lOKHZ).
(3)
AC
voltage measured with this instrument
is
a true
RMS
(root mean square).
For
sine wave and other waveforms
(without
DC
offset),
such
as
square wave, triangle wave and
staircase wave, such measurements are accurate.
3.2.2 Measuring resistance
&.
In order to avoid any damage to instrument or
measured equipment, before measuring resistance, cut
off
all power supplies
of
the circuit being measured and fully
discharge all high-voltage capacitors.
The
unit
of
resistance
is
ohm (n).
The resistance ranges
of
the instrument
are
namely 600.00,
6.000kn, 60.00kn, 600.0kn, 6.000Mn, and 60.00Mn.
Measure resistance:
1.
Turn
the rotary switch
ton
gear.
2.
Connect the black test pen and the red test pen
to
COM
l
i
\
input socket and V
/n
input socket.
3.
Use·
the test pen
to
measure the resistance
of
the circuit
to
be
tested.
4.
Read
the measured resistance from the
LCD
display.
Note:
(1)
Resistance measured on .the circuit
is
usually different
from the rated value
of
resistance.
(2)
During measurement
of
low resistance, in order
to
guarantee accuracy, first short circuit
two
pens and read
the resistance
for
pen short circuit, and
it
is
required
to
reduce
such
resistance after measuring the resistance.
(3)
In 60Mn, reading could
be
stable only after several
seconds. This
is
normal
to
high resistance measurement.
(4) When the instrument
is
of
open circuit, the display will
indicator 'OL", indicating the measured value exceeds the
range.
3.2.3
Measuring
diode
&, In order to avoid any damage to instrument or
measured equipment, before measuring diode, cut
off
all power supplies of the circuit being measured and
fully discharge all high-voltage capacitors.
. . I
-_-:
--
- - -
~
Test a diode outside the circuit
1.
Turn
the rotary switch
to*
01
>)
n, and press "
SEL" key
to
switch
*•
•II)
or resistance function.
2.
Connect the black test pen and the
red
test pen to
COM
input socket and V
/n
input socket.
3. Connect the black test pen and the
red
test pen to the
cathode and anode
of
the diode being tested .
4.
The instrument
will
display the forward biased voltage
of
the_ diode being tested.
If
the polarity
of
the test pen
reversely connected, the instrument
wjll
display 'OL".
In
the circuit, normal diodes shall
still
produce a forward
voltage drop from
0S.V
to
0.
8V;
but the reading
of
backward
biased voltage would
be determined
by
the resistance change
of
other channels between two pens.
3.2.4 Buzzer connection/continuity
test
&.
In order
to
avoid any damage to instrument or
measured equipment, before buzzer
on-off
test, cut
off
all power supplies
of
the circuit being measured and
fully discharge all high-voltage capacitors.
On
-off test: ·
1.
Turn
the rotary switch
to*
•II)
n gear. Press·
SEL"
,into
buzzer connection/continuity test.
2. Connect the black test pen and
the
red
test pen to
COM
input socket and
V/n
input socket.
3.
Use
both ends of the test pen to measure the
resistance of
the
circuit being measured,
if
the
measured circuit resistance
is
no
greater than about
400, the sensing indicator (green light)
will
tum
on,
and the buzzer
will
make continuous sound.
If
the
measured resistance
is
greater than
400
and less than
600,
the
sensing
indicator
(red
light)
will
tum
on.
16
f
11
__
r
3.
2.5
Measuring
capacitance
&
In
order
to
avoid
any
damage
to
instrument
or
measured
equipment,
before
measuring
capacitance,
cut
off
all
power
supplies
of
the
circuit
being
measured
and
fully
discharge
all
high-voltage
capacitors.
Use
DC
voltage
to
confirm
the
capacitor
is
discharged.
The capacitance
ranges
of
the
instrument
are namely
10.000nF,
100
.00nF, 1000.
0nF,
10.000µF, 100.00µF
and
1000.
0µF,
lOmF,
lOOmF
.
Measure capacitance:
1. Turn
the
rotary switch to_
-I
I-gear
.
2.
Connect
the
black
test
pen
and
the
red
test
pen
to
COM
input
socket
and
-11-
input
socket
.
3. Use
both
ends
of
the
test
pen
to
measure
the
capacitance
of
the
capacitor
to
be
measured,
and
read
the
measured
value from
the
LCD
display.
Note:
(1) When measuring large capacitance, a period
time
is
required
to
achieve a stable reading.
(2)
When measuring capacitance with polarity,
note
the
corresponding
polarity,
to
avoid
any
damage
to
the
instrument.
3.2.6 Measuring frequency
&
It · is
not allowed to measure any voltage higher
than 250V
DC
or
AC
rms, to avoid electric shock
and/or
damaged instrument.
Measure frequency:
1.
Turn
the
rotary switch
to
HZ%,
and
press "Hz%" key
to
switch
between
HZ
and
% function.
2.
Connect
the
black
test
pen
and
the
red
test
pen
to
COM
input
socket
and
Hz
input
socket.
3. Use
both
ends
of
the
test
pen
to
measure
the
frequency
of
the
circuit
to
be
tested
.
4. Read
the
measured
frequency
from
the
LCD
display.
3.2.7 Mea~uring
current
& When the open-circuit voltage to the ground exceeds
250V, do not measure
the
current on the circuit.
If
the
fuse
is
burnt during measurement, you are likely
to
damage the instrument or hurt yourself.
In order to avoid any damage to the instrument
or the measured equipment, before measuring current,
please check the fuse
of
the instrument first. During
measurement,
use
correct input socket, function gear
and range. When the test pen
is
inserted onto the
current input socket, do not bridge the other end
of
the
test pen
to
any circuit in parallel.
-·-
--
- .
---
---
.
~
. .
~
-
18
--~--<·:-
- - -
--
-~
-
The
DC
current
ranges of
the
instrument
are namely 600µA,
6000µA, 60.00mA, 600.0mA, 6.000A
and 10.00A.
The
AC
current
ranges
are namely 600µA, 6000µA, 60 .00mA,
600.0mA, 6.000A
and
10.00A;
Measure current:
1. Turn
the
rotary switch
to a proper
gear,
and
press
the
"SEL"
key
to
switch
DC
or
AC
current
function .
2.
Connect
the
black
test
pen
to
the
COM
input
socket.
If
the
measured
current
is
less than 600mA,
connect
the
red
test
pen
to
the
µAmA
input
socket;
if
the
measured
current
ranges
from 6A
to
l0A,
connect
the
red
test
pen
to
the
l0A
input
socket.
3. Disconnect
the
circuit
to
be
mea
sured .
Connect
the
black
test
pen
to
one
end
of
the
disconnected
circuit (with
lower voltage) ,
and
connect
the
red
test
pen
to
one
end
of
the
disconnected
circuit (with
higher
voltage).
4.
Connect
the
power
supply
of
the
circuit,
and
then
read
out
the
reading from
the
display.
If
the
display only
shows
"OL
",
it
indicates
the
input
exce~ds
the
selected
range, and
the
rotary switch shall
be
placed in a higher
range
.
Note:
•Under
AC
voltage function, press HZ/% key
to
measure
the
frequ ency of
AC
current
(0HZ-l0KHZ).
3.2.8 NCV
test
(non-contact
voltage
detection)
Turn
the
rotary switch
to
the
NCV
gear,
and
close
the
instrument
top
to
the
conductor,
if
the
instrument
detects
AC
voltage, the
instrument
will
light
up
indicator
of
corresponding
signal
strength
(high, medium and low),
according
to
the
detected
signal
strength
, meanwhile
the
buzzer
will
make alarm
sounds
of
different frequencies.
Note:
1. Even
if
there
's
no
indication,
voltage
may still exist. Do
not
judge
whether
there's
voltage
in
lead
depending
on
~on -
contact
voltage
detector
. Detection
may
be
impacted
by
factors sucti as different socket designs,
and
insulation
thickness types
etc
.
2:
When
inputting
voltage
at instrument
input
terminal, for
the
existence
of
induced voltage,
the
voltage
sensing indicator
may also light
up
.
3: Interference
sources
from external environment (i.e. flash
light,
motor
etc.),
may tri
gger
non-contact
voltage
detection
by mistake.
4 Technical indicatQrs
4.1
Comprehensive
indicators
Use environmental conditions:
, .
20
21
'
- -
---
--~
--=-=--~-
•
t~
. -
-·
600V
CAT
Ill
pollution level.
Altitude < 2000m.
Working environment temperature and humidity:
0-40°(
( <80%
RH, < l0
°C
not
considered).
Storage environment temperature and humidity:
-10-60°(
( < 70%
RH,
battery taken off).
• Temperature coefficient:
0.1
x accuracy/°(
(<l8
°C
or
>28°().
• Measure the maximum allowable voltage between the
measurement end and the ground: 600V
DC
or
600V
AC
RMS
.
•
Fuse
protection:
mA
gear :
Tube
FF
600mN600V;
Gear A:
Fuse
FF
10A/600V
• Conversion rate: About 3 times/second
• Display: 6000 counts
LCD
display. Display unit symbols
automatically according
to
measurement function gear.
• Over range indication: The
LCD
displays
"01..'.
' .
• Battery low voltage indication: When battery voltage
is
lower
than normal operating voltage,
the"Cil"
will
display.
•
Input
polarity indication: It will display •-• automatically.
•
Poy.,er
supply: 4 x 1.
SV
AAA battery.
• Dimension: 150 mm(L)x75mm(W)x48mm(H).
• Weight: About 240g (including battery).
4.2 Precision indicators
Accuracy: ± ( %reading + characters), warranty
is
one year
since the date
of
delivery.
Basic
conditions: Ambient temperature
is
l8°C
to 28°C, and
relative humidity is no greater than 80%.
4.2.1
DC
voltage
Range
Resolution
Accuracy
600mV O.lmV
6V
lmV
±(0.
5%
reading + 3 characters)
60V
lOmV
600V lOOmV
Input
impedance:
lOMn.
Max. input voltage: 600Vdc
or
600Vac
RMS
.
4.2.2
AC
voltage
Range
Resolution
Accuracy
6V
lmV
±(0.8% reading
+ 3 characters)
60V
lOmV
(<SOOHz)
600V lOOmV
± (1.5% reading
+ 10 characters)
(>=SOOHz)
Input
impedance:
lOMn
Max. input voltage: 600Vdc
or
600Vac
RMS
.
Frequency response: OHz-lOKHz true
RMS
-~=--
-.~-----.
-
--
-~
.. -
~
23
-----
-
-----
-
------
~--
~--·-
. I - -
_-
.
-~~
4.2.3 Frequency
Range
Resolution
Accuracy
9.999Hz 0.
00lH
z
99.99Hz
0.0lHz
999.9Hz O.lHz
±(0.5% reading + 3
9.999KHz 0.001
KHz
99.99KHz 0.01
KHz
999.
9KHz
0.1
KHz
9.999MHz 0.001MHz
Input voltage range:200mV-10Vac
RMS
Overload protection: 600V
DC/AC
4.2.4 Resistance
Range
Resolution
6000
0.10
6kn
10
60kn
100
600kn
1000
6Mn
lkn
60MO
l0kn
Overload protection: 600V
DC/AC
Open
circuit voltage: 1 V
characters)
~ccuracy
±(0.8% reading + 3
characters)
4.2.5 Diode
Function Range Resolution Test
conditions
Diode
test
*
0-3V
0.001V
Overload protection: 600V
DC/AC
The display shows an
approximate value of
forward voltage
drop
of
the
diode.
- J -.
-~
. 24
-----
_ _ 25 _
--
_
~-
~
..
- -
-----
- -
..
-
-~---~
-
~
~
...
--
- J
-~--------~-~----
- -
~
~
4.2.6 Buzzer connection/disconnection
. Test
Function
Range
Resolution Description
conditions
01)) .
6000
0.10
When
the
built-in
buzzer
sounds,
and
the
green
indicator
lights
up,
the
measured
resistance
is
no
greater
than
about
300.
At
about
400
-600
,
the
red
indicator lights up.
Greater than
6000
and
disolay
OL
Open
circuit
voltage
: About
lV
Overload protection: 600V
DC/AC
4.2.7 Capacitance
Range
Resolution
Accuracy
lOnF
O.
OOlnF
±(4.0% reading + 10
characters)
lOOnF
O.OlnF
lOOOnF
O.lnF
lOµF
lnF
±(4.0% reading + 3 characters)
lOOµF
lOnF
lOOOµF
lOOnF
lOmF
luF
lOOmF
O.OlmF
±(5.0% readin
g
+ 3 characters
Overload protection: 600V
DC/AC
4.2.8
DC
current
R~nge
Resolution
600µA
0.lµA
6000µA
lµA
60mA O.OlmA
600mA 0.
lmA
6.000A
lmA
10.00A
lOmA
Accuracy
±(0.8% readin~ + 3
characters
:1:(1.2%
reading + 3
characters)
Overload protection :
mA
range
fuse (FF600mA/600V);
lOA range fuse (FF10N600V).
Max.
input current:
mA
gear: 600mA
DC
or
AC
RMS;
lOA gear: lOA
DC
or
AC
RMS
When
the
measured current
is
greater
than
SA,
the
continuous
measuring
time
cannot
exceed lO;econds,
and
it
is
required
to
stop
the
current
measurement
for 1 minute
after
measuring.
4.2.9
AC
current
Range
Resolution
Accuracy
600µA O.lµA
6000uA
luA
±(1.0% reading + 3
60mA
O.OlmA
characters)
600mA O.lmA
GA
lmA
±(1.5% reading + 3
lOA
lOmA
characters)
~
~--
- -
A-
• y .
-~-
1 -
--.
• --
--•-
·-••~-----·--
--~-:
~
~
_ - - · • -26: • 27 . '
- . -
,:;;
·-
...
• -' - . .
..
~
. . . -
~
. -
Overload protection; mA range fuse (FF600mA/600V); lOA
range fuse (FF10A/600V).
·
Max
. input current: mA gear: 600mA
DC
or
AC
RMS
;
l0A
gear:
l0A
DC
or
AC
RMS
When the measured current
is
greater than
SA,
the continuous
measuring time cannot exceed 10 seconds, and
it
is required
to
stop the current measurement for 1 minute after
measuring.
Frequency response; 0Hz-lOKHz, true
RMS
5. Instrument
maintenance
Basic
maintenance information provided in this section,
includes instructions on the replacement
of
protective tube
and the replacement
of
battery.
Unless otherwise you are
an
experienced maintenance person
and possess related calibration, performance test and
maintenance information,
do
not
try
to
repair this instrument.
5.1 General maintenance
&
In
order
to
avoid electric shock or damage
to
instrument,
do
not
wet
the inside
of
the instrument. Before opening the
shell or
the
battery cover,
be
sure
to
dismantle the
connecting wire between the test pen and the input signal.
Use
wet cloth and a small amount
of
detergent
to
clean the
instrument shell, and
do
not
use
any abrasive
or
chemical
solvent.
If
the
input
socket
is
polluted
or
wet,
it
may affect the reading.
Be
sure
to
clean
the
input socket:
(1)
Turn
off
the instrument, and pull
out
all test pens from the
in
put
socket.
(2)
Remove all pollutants on the socket.
(
3)
Use
a new cotton ball to soak with detergent
or
lubricant,
~~-~
- -
---
- -
----e--....
••
- .
..,-
--
--~-=-
-
.--
---
-~
----
--
,....,
~-
___
.:.- - -
28
-
~-
-~
·:1
--
- ~ 9 -
·__
- - !
to clean each sock.et, while
the
lubricant could prevent sock.et
pollution related
to
moisture.
Lr:.
In
order
to
avoid electric shock
or
personal injury
caused by error reading, replace the battery immediately
when the "
Ci)
" symbol appears on the instrument
display.
Only specified fuse (600mA/600V, 10A/600V
quick-acting fuse) could
be
used.
In
order
to
avoid electric shock or personal
injury,
before opening the battery cover and replacing the
battery, it is required
to
shut down and check whether
the test pens have been disconnected from the measured
circuit.
5.2 Replace battery and fuse
Please replace battery according
to
the following steps:
1. Disconnect
the
power supply of the instrument.
2.
Pull
out
all
test
pens from the input sock.et.
3.
Use
a screwdriver to unfasten screws fixing battery cover.
4.
Remove
the
battery cover.
5. Remove
the
old battery
or
damaged
fuse.
6. Replace with a new 4 x
1.SV
AAA
battery or
ne~
fuse.
7. Place the battery cover and fasten
the
bolts.
_-
-:.-
--...
•
30
...
~ - -
C
EEMC&LVD
~
- !
YOl--0'!--0l&G
AO
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