Mastech MS8910 User manual

Smart SMD Tester
USER’S MANUAL
MODEL: MS8910
Table of Contents
1. Introduction
2. Safety note
3. Explanation of Controls and Indicators
3-1. Product Illustration
3-2. Push Buttons
3-3. LCD display
4. Specification
4-1. General Feature
4-2. Electrical Specification
5. Testing Operation
5-1. Scanning Mode
5-2. Resistance Measurement
5-3. Capacitance Measurement
5-4. Diode Check
5-5. Continuity Check
6. Maintenance
6-1. Replacing The Battery
6-2. Cleaning

1. Introduction
The Tester is a handheld and battery operated very convenient small
Tool that is specially used to measuring SMD （Surface Mounting
Device), there are Chip type resistor, Chip type capacitor and diode, for
example.
Moreover, the Tester have the continuity checking function
The Tester is automatically identified the passive
Component as has been indicated above. Therefore,
the measurement are allowed by fully automatic detection.
The Tester is designed to meet IEC1010-1 standard and
Stipulation of 2-Poulation Grade.
The Tester conform to the European Union’s following
Requirement: CE regulation 89/336 (EMC Electromagnetic
Compatibility）。
The entire outer surface of the Tester case has been with
thermo plastic elastomer, and the two testing pins has been gold-plated, so that
it is reduce pin contact resistance and prevent to get rusty.
This operating instruction covers information on safety and caution,
so please read relevant information carefully and observe all the warming and
note strictly.
2. Safety Note
The following safety notes should be observed prior to using
This Tester and any associated accessory. Although the Tester do not used to
measuring DC/AC Voltage or Current, but there are situations where
hazardous condition may be present.
●Inspect the Tester case before using. Do not use damaged device.
●Inspect the Pin Holder and Pin gold-plated state.
●Do not attempt use the Tester as tweezers to prevent the pin tip
from damage.
●Do not apply external voltage between the two pins.
●Do not used in the environment with explosive gas, vapor, or dust.
Caution
Never use the Tester on alive circuits.

3. Explanation of Control and Indicators
3.1 Product Illustration
①LCD
②“HOLD”Push Button
③“FUNC”Push Button
④Pin Holder
⑤Test Pin (Gold-plated)（‘ INPUT’Terminal）
⑥Test Pin (Gold-plated)（‘ COM’Terminal）
⑦Battery cover
3.2. Push Buttons
[1] “FUNC“：it is the function select key that acts trigger.
Use the Push Button as switch of Resistanc/Capacitance/Diode/Continuity.
The Tester is have not Power Key. When install the 3V Lithium Battery,
the Tester immediately power ON.
Once powered on, the Tester will perform the Scanning Mode and then
the ‘SCAN’and ‘- - - - ’sign is displayed on the LCD. This is indicate the
Tester is inter to the auto scanning mode and will be automatically identify
the resistor, capacitor, diode and continuity measurement mode.
The ‘FUNC’Button is used to selecting some one measurement
mode manually.
[2] “HOLD”: Press “HOLD”Button to enter or exit the hold mode
In any measurement mode. This key is act with trigger.
In the data hold mode, the Tester stop updating LCD, stored
current measuring data and displayed the measured data, and then
holding the data until press the “HOLD”key once again.
Note: after auto power-OFF is active, pushing any of the push
button can turn on the Tester again.

3-3. LCD Display
No.
Indicator
Meaning
1
SCAN
Auto Scanning Mode
2
AUTO
Auto Ranging
3
Data Hold
4
Diode checking Mode
5
`
Continuity Checking Mode
6
numF
Capacitance Units(nF, uF, mF)
7
MKΩ
Resistance Units(Ω, KΩ, MΩ)
8
Low Battery Indicator
4. Specification
4-1. General Feature
●3000 count LCD display.
●Full automatic measurement:
Auto scanning the Resistance/Capacitance/Diode.
●Function selection by one “FUNC”Push Button
●Data Hold function
●Continuity Checking function
●Over Load Indication ( ‘OL’)
●Low Battery Indication
●Power Supply: 3V Lithium Battery (CR2032) , 1pc
●Test Pins is Gold-Plated.
●Auto Power OFF. If the Tester is idle for more than 10 minutes,
The Tester automatically turns the power off.
●Operating temperature & Humidity: 0 ~ 40℃(32 ~104 ℉) & < 80%
RH
●Storage temperature & Humidity: -10 ~ 50℃(14 ~ 122 ℉) &
<70%RH
●Safety Class: IEC1010-1, CAT II
●EMC：According to CE regulation 89/336.
●Dimension (L x W x H) & Weight: 170 x 31 x 17mm, Approx. 48.6 g
●Environmental condition: （1）Indoor use；
（2）Altitude up to 2000meter.

4-2. Electrical Specification
Function
Range
Best
Resolution
Accuracy
Resistance
300Ω/3KΩ/
30KΩ/300K/3MΩ
30MΩ
0.1Ω
±(1%rdg+ 2dgt)
±(1.2%rdg+ 3dgt)
Capacitance
3nF/30nF/300nF/
3uF/30uF/
300uF/3mF/30mF
1pF
±(2%rdg+ 3dgt)
±(3%rdg+ 3dgt)
Diode Check
Open Voltage : 2.8V
Testing Current : 2mA
Continuity
Check
When the resistance is less than 30Ω, the Buzzer is sounded.
Accessory:
1. Spare Test Pin: 2 pcs
5. Testing Operation
5-1, Scanning Mode
When install the 3V Lithium Battery, the Tester immediately power ON.
In this case, the ‘SCAN’and ‘- - - - ’sign is displayed on the LCD. This
is indicate the Tester is inter to the auto scanning mode and automatically
identified the resistor, capacitor, diode and continuity ，and then enter to
the corresponding measurement mode.
In the Scanning Mode, when two pins are in touch with the object being
measured, the measured value will be displayed on the LCD.
Caution
When measuring SMD device on the PCB, You must be
Disconnect power and discharge all high- voltage
Capacitors.
5-2. Resistance Measurement
[1] Auto scanning Mode &Auto range:
300.0Ω—3.000MΩ
[2] Selected Resistance measurement Mode by the‘FUNC“key:
The range is extended to 30 MΩ, i.e.300.0Ω—30.00MΩ
When over load, the ‘OL’symbol will be displayed on the LCD.
5-3. Capacitance Measurement
[1] Auto scanning &Auto range: 3.000nF —300.0uF。
[2] Selected Capacitance Mode by the ‘FUNC’key:
The range is extended to 30.00mF, i.e. 3.000nF—30.00mF.

Caution
To avoid damage to the Meter or to the equipment under test,
disconnect power and discharge all high-voltage capacitors
before measurement capacitance.
5-4 Diode Check
You can selecting the Scanning Mode or the Diode Mode by
The ‘FUNC’push button.
①Use the diode test mode to check diodes, transistors and other
semiconductor device. In the diode test mode sends a current through
the semiconductor junction, and the measure the voltage drop across
the junction.A good silicon junction drop between 0.5V —0.8V.
②For forward voltage drop reading on any semiconductor component,
the test pin(connected to the ‘INPUT’terminal) is in touch with the
component anode and the another test pin is in touch with on the
component cathode. The measured value show on the LCD.
③Reverse the test pin and measure the voltage across the diode again.
If diode is good, the display shows “OL”.
If diode is shorted, the display shows 0 (zero) in both direction.
If display shows “OL”in both direction, the diode is open.
5-5. Continuity Check
May selecting Scanning Mode or Continuity Mode by ’FUNC’push
button.
When the resistance reading is less than 30Ω, the buzzer
generates 2KHz beep to indicate continuity.
6. Maintenance
6-1. Replacing The Battery
When meter display , the battery must be replace to maintain
normal operation.
①Open the battery cover on the bottom case by
screwdriver.
②Remove old battery and snap new one into battery
holder
Note:
Lithium Battery type: 3V CR2032
6-2. Cleaning
The meter can be cleaned with soft clean cloth to remove any oil, grease or
grim.
Do not use liquid solvent or detergent.
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