The instrument is a stable digital multimeter driven by battery. It comes with
28mm high LCD to make reading more clear. Backlight display and overload
protection make it convenient to use .This instrument features multi functions
for measuring DCV, ACV, DCA,ACA, resistance, capacitance, inductance,
diode, transistor, continuity , temperature and frequency. The instrument
utilizes a dual-integral A/D converter as a key feature and is an excellent tool.
It is portable and ideal for lab, factory and field use.
FETY NOTE
SA
The meter meets the standards of IEC1010.
Please read the operation manual carefully before operation.
1. Do not input anything over a range limit.
2. Voltage below 36V is safe. To avoid electric shock, check whether the
test leads are connected correctly, whether the insulation is good when
measuring over 36DCV or 25ACV.
3. Remove the test leads when changing function and range.
4. To select correct function and range, make sure the range limit setting
is correct. Start with higher limits and work down to correct level if
uncertain.
5. Do not operate the meter if battery case and back cover is not properly
fixed.
6. Do not input voltage when measuring resistance.
7. Remove test leads from test point and turn off the power before
1.5 Over range indication: the MSD displays “OL” or “-OL”.
1.6 Low battery indication: “
1.7 Operation environment: (0~40)℃,R.H.<80% .
1.8 Power:One
1.9 Size: 189×97.5×35mm
1.10 Weight: approx. 390g(not includes battery).
1.11 Accessories: operation manual, holster, test leads (20A),
”DANGEROUS VOLTAGE EXISTS,
” GND,“ ”DUAL INSULATION
”THE OPERATOR MUST REFER TO THE MANUAL ,
”LOW BATTERY
” appears.
9V 6F22 battery
Thermocouple (Banana type), transistor test socket.
1
2 TECHNICAL
CHARACTERISTIC
2.1 Accuracy:±(a%× rdg+d) at (23±5)℃,R.H.<75%,one year guaranteed
from the production date.
2.2 TECHNICAL DATA
2.2.1 DCV
RANGE ACCURACY RESOLUTION
200mV 100uV
2V 1mV
20V 10mV
200V
±(0.5%+3)
100mV
1000V ±(1.0%+5)1V
Input resistance: All ranges: 10 MΩ
Overload protection: 250V DV or AC peak value at 200mV
range.1000V DC or AC peak value at other ranges.
2.2.2 ACV
Range AccuracyResolution
200mV ±(1.2%+3) 100uV
2V 1mV
20V 10mV
200V
±(0.8%+5)
100mV
750V ±(1.2%+5)1V
Input impedance:All ranges 10MΩ
Overload protection:250V DC or AC peak value at 200mV ,
750V DC or AC peak value at other ranges.
Frequency response: (40-400) Hz for range 200V;
(40-100) Hz for range 750V;
Display: Sine wave RMS (AVG value response).
2.2.3 DCA
RANGE ACCURACY RESOLUTION
2mA 1uA
20mA
±(0.8%+3)
10uA
200mA ±(1.2%+4) 100uA
20A ±(2.0%+5) 10mA
Max. Input volt drop: 200mV;
Max. input current: 20A(the test time should be within 10
seconds)
Overload protection: 0.2A/250V fast-blow fuse, 20A/250V
quick-action fuse for range 20A.
2
2.2.4 ACA
Max measuring voltage drop:200mV.
Max Input current: 20A (less than 10 seconds).
Overload protection:0.2A/250V fast-blow fuse, 20A/250V
quick-action fuse for range 20A.
Frequency response: 40Hz-200Hz.
Display: Sine wave RMS (AVG value response).
2.2.5 RESISTANCE(Ω)
RANGE ACCURACY RESOLUTION
200Ω ±(0.8%+5) 0.1Ω
2KΩ 1Ω
20kΩ 10Ω
200kΩ 100Ω
2MΩ
20MΩ ±(1.0%+15) 10kΩ
2000MΩ
Open voltage: less than 3V.
Overload protection: 250V DC or AC peak value.
NOTE:
1. At 200Ω range, the test leads should be short-circuited, and
measure the lead to lead resistance, then, subtract from the
real measurement.
2. It is normal to display 10MΩ when the test leads shorted in
range 2000MΩ, it will not effect the accuracy and shall be
subtracted from the value measured. For example: The object
resistance is 1000MΩ, the reading value is 1010MΩ, then the
correct value shall be 1010-10=1000MΩ
3. Lagged display of value is normal when measuring
resistance higher than 1MΩ. Please wait until the display is
stable.
RANGE
2mA 1uA
20mA
200mA ±(2.0%+5) 100uA
20A ±(3.0%+10)10mA
ACCURACY RESOLUTION
±(1.0%+5)
±(0.8%+3)
±(5.0%(reading-
10)+20)
10uA
1KΩ
1MΩ
3
2.2.6 CAPA
CITANCE (C)
RANGE ACCURACY RESOLUTION
20nF 10pF
200nF 100pF
2uF 1nF
20uF
±(2.5%+20)
10nF
200uF ±(5.0%+5) 100nF
Testing frequency: 100Hz
Overload protection: 36V DC or AC peak value
NDUCTANCE (L)
2.2.7 I
RANGE ACCURACY RESOLUTION
2mH 1uH
20mH 10uH
200mH 100uH
±(2.5%+20)
2H 1mH
20H
Testing frequency: 100Hz
Overload protection: 36V DC or AC peak value
2.2.8 TEMPERAT
URE (T)
10mH
RANGE ACCURACY RESOLUTION
(-20~1000)℃ ±(1.0%+4)<400℃
±(1.5%+15)≧400℃
Banana type Thermocouple.
2.2.9 FREQUENCY
(F)
RANGE ACCURACYRESOLUTION
2KHz 1Hz
20KHz 10Hz
200kHz 100Hz
2000kHz 1KHz
10MHz
Input senility: higher than 3.5VPp-p
Overload protection: 250V DC or AC peak value(less than 10
seconds)
2.2.10
DIODE AND CONTINUITY TEST
±(1.0%+10)
10KHz
Range Displaying value Test condition
The positive DC
Positive voltage
drop of diode
Buzzer sounds ,
the resistance is
less than(70±20)Ω
current is approx.
1mA,negative voltage
is approx. 3V
open voltage is
approx. 3V
4
1℃
Overload protec
Warning: DO NOT input any voltage at this range for safety!
2.2.11 TRANSIST
tion: 250V DC or AC peak value
OR hFE data TEST
Range Displaying valueTest condition
hFE
NPN or PNP
0~1000
The base electrode
current is approx
10uA, and Vce is
approx 3V
3 OPERA
TION
3.1 Front panel description
3.1.1 LCD: display the measured
value.
3.1.2 Powe
3.1.3 HOLD: Pressing this key for hold
3.1.4 B/L key: turn on/off hold
3.1.5 DC/AC: select DC/ AC mode
3.1.6 Range knob: selecting
3.1.7 GND. ground, “+” input jack of
3.1.8 “+” pole jack for current lower than 200mA; “-“cathode input for
3.1.9 20A current test jack.
3.1.10 “+” pole jack of voltage, resistance and frequency.
3.2 VOLT
3.2.1 Insert the black test lead to “COM” jack, the red one to V/Ω/Hz
3.2.2 Set the range knob to “V” range, If the measured voltage is
3.2.3 Press DC/AC key to select DC or AC measuring mode.
3.2.4 Apply the test leads to the test point the LCD displays the
NOTE:
a.If LCD displays “OL”, it means over range, set the range knob to
r key: turn on/off the power.
maximum measuring result. LCD
show "PH” icon. Press again this
key turn off data hold and “PH”
icon disappear.
backlight.
measuring function and range.
capacitance (Cx), inductance
(Lx), transistor and temperature.
capacitance (Cx), inductance(Lx), transistor and temperature.
AGE MEASUREMENT
jack.
unsure beforehand, set the range knob to the highest range,
then reduce it gradually until get the highest resolutions
readings.
measured voltage value.
a higher range.
b.Do not input a voltage over 1000V DCA or 750V ACV, the test
5
c. Do not touc
h a high voltage circuit when measuring high voltage.
3.3 CURRENT
MEASUREMENT
3.3.1 Insert the black test lead into “COM” jack, the red one to “mA”
or “20A” jack.
3.3.2 Set the range knob to “A: range, If the measured current is
unsure beforehand, set the range knob to the highest range,
then reduce it gradually until get the highest resolution
readings.
3.3.3 Press DC/AC key to select DC or AC testing mode.
3.3.4 Connect the test leads to the circuit under test, the LCD
displays the measured voltage value.
NOTE:
a.If LCD displays “OL”, it means over range, set the range knob to
a higher range.
b.When measuring current, mA socket should not exceed 200mA,
20A jack should not exceed 20A (test time should be less than
10 sec.), the test leads should be off the test point when
switching the function and range.
3.4 RESISTANCE MEASUREMENT
3.4.1 Insert the black test lead to “COM” jack and the red one to
“V/Ω/Hz” jack.
3.4.2 Set the range knob to a proper resistance range; connect the
test leads across to the resistance being measured.
NOTE:
a.If the resistance value being measured exceeds the max value
of the range selected, LCD displays "OL", set the range knob to
a higher range. When the resistance is over 1MΩ, the meter
may take a few seconds to stabilize. This is normal for high
resistance readings.
b. When input terminal is in open circuit, overload displays.
c. When measuring in-line resistance, be sure that power is off and
all capacitors are discharged completely.
d. Do not input any voltage at this range.
3.5 CAP
ACITANCE MEASUREMENT
3.5.1 Set the range knob to a proper capacitance range and insert
the red test lead to “mA” jack and the black one to “COM” jack
3.5.2 connect the test leads to the capacitor being measured(note:
the polarity of red test lead is “-”).
NOTE:
6
a. If the cap
b.Before measuring, LCD display might not be zero; the residual
c.When measuring large capacitance, LCD may display an
d.Discharge all capacitors completely before capacitance
e.Do not input any volt at this range.
3.6
INDUCTANCE MEASUREMENT
3.6.1 Set the range knob to a proper inductance range and insert the
3.6.2 Connect the test leads to the inductor being measured.
NOTE:
a.If the inductance value being measured exceeds the max value
b.It will get different measuring result when measure inductors are
c.If set the range to 2mH, short test leads to get the inductance
d.Don’t set the range knob to higher range when measuring lower
acitance value being measured exceeds the max value
of the range selected, LCD displays "OL". set the range knob to
the highest range, then reduce it gradually until get the highest
resolutions readings
reading will decrease gradually and should be disregarded.
unstable value due to creep age or breaking.
measurement to avoid damage.
red test lead to “mA” jack and the black one to “COM” jack
of the range selected, LCD displays "OL". set the range knob to
the highest range, then reduce it gradually until get the highest
resolutions readings
different resistance.
then measure and subtract the value from measuring result.
inductor that will cause unstable measuring result.
3.7 TEMPERATURE MEASUREMENT
a. Set range knob “℃”. and insert the thermal couple black test lead to
“mA” jack and the red one to “COM” jack
b. Connect the leads to work-point where wanted to take temperature.
The value will be displayed on LCD (℃).
NOTE:
a. If the temperature being measured exceeds the max value of the
range selected, LCD displays "OL".
b.Don’t change the thermal couple from the other source except
Pro’skit that will affect accuracy.
c.Don’t input voltage form thermal couple when measure
temperature.
3.8 FREQUENCY MEASUREMENT
3.8.1 Apply the test lead or shield to cable to “COM” or ““V/Ω/Hz”
jack.
3.8.2 Switch the knob to frequency range, and connect the test leads
across the signal source or the measured load.
7
NOTE:
a.W
hen input is 10Vrms or less, a reading is possible but maybe
over-range.
b.Shielded cable is recommended when measuring small signals
under noisy conditions.
c.Be careful when measuring high volt circuit.
d.Do not input a voltage over DC 250V or AC peak factor to avoid
damage to the meter.
3.9 Transistor hFE
3.9.1 Turn the range switch to “hFE” position;
3.9.2 Insert test leads into “mA” and “com” jack. Please pay attention
to the polarity, as the “com” for positive and “mA” for negative.
3.9.3 To determine the transistor’s type,NPN or PNP,insert the
emitting, base and collector electrode into the corresponding
jacks in testing accessory
3.10
DIODE AND CONTINUITY TEST
3.10.1 Insert the black test lead to “COM” jack and the red one to
“V/Ω/Hz” jack (Note: the polarity of red test lead is“+”).
3.10.2 Set the range knob to“
diode being measured, reading is the approximation of the
diode positive volt drop.
3.10.3 Connect the test leads to two points of the measured circuit, if
buzzer sounds, the resistance is lower than approx.(70±20)Ω.
3.11 MAX V
ALUE TEST
Press the “PK HOLD”, LCD displays “PH”, the Max. value on testing is
”range, connect the test leads to the
held on LCD, press it again, the function is cancelled.
O POWER OFF
3.12 AUT
After about (20±10)minutes meter not being used ,it will be power off
automatically and enter into dormant status, and press “POWER”
again for two times to turn on power
3.13 POWER ON/OFF
Press “POWER APO” key for 2 seconds to turn on the power and the
meter is in working mode, Press “POWER APO” key again to turn it
off.
3.14 BACKLIGHT
Press “B/L” key to turn on the backlight. After 10 seconds, the
backlight will be turn down automatically
INDICATION
8
4 MAINTENA
DO NOT tamper with the circuit it’s a precision meter and should only be
serviced by factory personnel.
4.1 Do not operate or store the instrument in high temperature or high
4.2 Use the damp cloth and soft solvent to clean the meter; do not use
4.3 If not operated for a long time, take out the battery.
NCE
humidity place and do not work closed to flammability substance or
explosive or strong magnetic field.
abrasive and alcohol.
4.3.1 When LCD displays “
below:
4.3.1.1 Take out of the holster and drop out the battery case.
4.3.1.2 Take out the battery and replace a new one. It’s better
to use alkaline battery for long time use.
4.3.1.3 Fix the battery case and replace the holster.
4.3.2 Replacing fuse
Please use the same type and specification fuse as
replacement.
” symbol, replace the battery as
5 TROUBLE SHOOTING
If the meter does not work properly, check the meter as follows:
CONDITIONS WAY TO SOLVE
NO DISPLAYING
●Power is off
●Replace battery
symbol displays ●Replace battery
NO CURRENT INPUT ●Replace fuse
BIG ERROR ●Replace battery