SDM Series
Digital Multimeter

Quick Start GuideEN04A

Copyright Information⚫

SIGLENT TECHNOLOGIES CO., LTD. All rights reserved.

⚫

The information provided in this manual replaces all information printed before.

⚫

SIGLENT Company has the rights to change the specification and the price.

⚫

Contents in this manual are not allowed to be copied, extracted and translated without
permission by the company.

SDM Series QuickStartI

General Safety Summary
Read the following safety precautions carefully to avoid any personal injuries or damages to theinstrument and any products connected to it. To avoid potential hazards, please use theinstrument as specified.
Use proper power line.
It’s only allowed to use the special power line which is approved by local state.
Ground the instrument.
The instrument is grounded through the protective terra conductor of the power line. The ground
conductor must be connected to the earth to avoid electric shock. Make sure the instrument isgrounded correctly before connecting its input or output terminals.
Connect the signal wire correctly
The potential of the signal wire is equal to the earth, so do not connect the signal wire to a highvoltage.
Observe all terminal ratings
Please observe all ratings and sign instructions on the instrument to avoid fire or electric shock.
Before connecting the instrument, please read the manual carefully to gain more information
about the ratings.
Do not operate with suspected failures
If you suspect that the product is damaged, please contact SIGLENT’s qualified service
personnel to inspect it. Any repair and adjustment to the product or replacing a component should
be done by qualified personnel only.
Avoid circuit or wire exposure
Don’t touch exposed contacts or components when the power is on.
Don’t operate without covers.
Don’t operate the instrument with covers or panels removed.
Use proper fuse.
It’s only allowed to use the specified fuse for the instrument.
Use proper overvoltage protection.
Make sure there is no overvoltage (like voltage caused by thunder and lightning) reaching to theinstrument, otherwise the operator may suffer an electric shock.

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Antistatic protection.
Static electricity will cause damages to the instrument, so test in antistatic areas as far as
possible. Ground its inner and outer conductors to release the static electricity temporarily before
connecting the cable to the instrument.
Keep good ventilation.
Improper ventilation will cause the rise of the instrument’s temperature. Keep good ventilationand check the vent and fan regularly when using it.
Keep the surface of the instrument clean and dry.
Do not operate in wet or damp conditions.
Do not operate in flammable or explosive environment.
The disturbance test of all the models meets the limit values of A in the standard of EN
61326-1:2020.

SDM Series QuickStartIIIInput terminal protection limitation
Protection limitation is defined for the input terminal:
1.

Main input (HI and LO) terminal

HI and LO terminals are used for Voltage, Resistance, Capacitance, Continuity, Frequency, Diodeand temperature measurement. Two protection limitations are defined:⚫

HI-LO protection limitation: 1000VDC or 750AVC. It’s the maximum measurable
voltage. The limitation can be expressed as 1000Vpk.

⚫

LO-ground protection limitation: LO terminal can “float” 500Vpk relative to the groundsafely. The maximum protection limitation of HI terminal relative to the ground is1000Vpk. Therefore, the sum of the “float” voltage and the measured voltage can’t
exceed 1000Vpk.

2.

Sampling (HI Sense and LO Sense) terminal

HI Sense and LO Sense are used for 4-wire Resistance measurement. Two protection limitations
are defined:

3.

⚫

HI Sense – LO Sense protection limitation: 200Vpk.

⚫

LO – LO Sense protection limitation: 2Vpk.

Current input (I) terminal

I and LO terminals are used for current measurement. The maximum current which go throughthe I terminal is limited to 10A by the fuse on the back panel.

NOTE:
Voltage on the current input terminal corresponds to voltage on LO terminal. To keep goodprotection, only use the fuse of specified type and level to replace this fuse.

IVSDM Series QuickStart

IEC Measurement Category II Overvoltage Protection
SDM Series Digital Multimeter provides overvoltage protection for line-voltage mains connections
meeting both of the following conditions to avoid the danger of electric shock:1.

The HI and LO input terminals are connected to the mains under Measurement Category IIconditions as following.

2.

The maximum line voltage of the mains is 300VAC.

WARNING:IEC Measurement Category II includes electrical devices connected to mains at an outlet on abranch circuit, such as most small appliances, test equipments, and other devices that plug into a
branch outlet or socket
SDM series is capable of making measurements with the HI and LO inputs connected to mains insuch devices (up to 300VAC) or the branch outlet itself. However, the HI and LO terminals of theMultimeter can’t be connected to mains in permanently installed electrical devices such as themain circuit-breaker panels, sub-panel disconnected boxes and permanently wired motors. Suchdevices and circuits are prone to exceed the protection limits of SDM series.
NOTE:Voltages above 300VAC only can be measured in circuits that are isolated from mains. However,there may be transient overvoltage in circuits that are isolated from mains. SDM series is able towithstand occasional transient overvoltage up to 2500Vpk. Please don’t use this instrument tomeasure circuits that transient overvoltage may exceed this level

SDM Series QuickStartVSafety Terms and SymbolsTerms in this manual. Terms may appear in this manual:
WARNING

Warning statements indicate the conditions and behaviors that could
result in injury or loss of life.

CAUTION

Caution statements indicate the conditions and behaviors that could
result in damage to this product or other properties.

CAT I (1000V)

IEC Measurement Category I. The highest measurable voltage is1000Vpk in the HI-LO terminal.

CAT II (300V)

IEC Measurement Category II. Inputs may be connected to mains (up to300VAC) under Category II overvoltage conditions.

Terms used on the instrument. Terms may appear on the instrument:
DANGER

Indicates an injury or hazard that may immediately happen.

WARNING

Indicates an injury or hazard that may not immediately happen.

CAUTION

Indicates that a potential damage to the instrument or other property
might occur.

Symbols used on the instrument. Symbols may appear on the instrument:

VI

Hazardous

Protective

Voltage

Earth Ground

Warning

Test Ground

ChassisGroundSDM Series QuickStart

Daily Maintenance and Cleaning
Maintenance
When storing or placing the instrument, please avoid the liquid crystal display from direct sunlightfor a long time.
NOTE:⚫

To avoid damages to the instrument or test leads, please don’t place them in mist, liquid orsolvent.

Cleaning
Please often clean the instrument and test leads according to the use of them.
⚫

Wipe the external ash of the instrument and test leads by a soft rag. Be careful not to scratch
the transparent plastic protective screen when cleaning the liquid crystal screen.

⚫

Use a soft rag that has been soaked by water to clean the instrument after cutting off thepower. Or use 75% isopropyl alcohol of water solvent to get a more thorough cleaning.

NOTE:
⚫

To prevent the surface of the instrument or test leads from damages, please don’t use any
corrosive or chemical cleaning reagents.

⚫

Please make sure the instrument is already dry before restarting it to avoid short circuits or
personal injuries caused by water.

SDM Series QuickStartVII

Content
Copyright Information ........................................................................................................................ IGeneral Safety Summary ................................................................................................................. II
Safety Terms and Symbols.............................................................................................................. VI
Daily Maintenance and Cleaning ................................................................................................... VII
General Inspection ........................................................................................................................... 1Appearance and Size ....................................................................................................................... 2
To adjust the Handle......................................................................................................................... 3
Front Panel ....................................................................................................................................... 4
Rear Panel ........................................................................................................................................ 5
Connect Power Cord ........................................................................................................................ 6
Power Selection................................................................................................................................ 7
Change the Power Fuse................................................................................................................... 7
Connect Test Leads .......................................................................................................................... 8Connect USB and LAN Ports ......................................................................................................... 14
Use Safety Lock ............................................................................................................................. 15
Troubleshooting .............................................................................................................................. 16
Contact SIGLENT ........................................................................................................................... 17

VIII

SDM Series QuickStart

General Inspection
1.

Inspect the shipping container.
Please keep the damaged container or cushioning material until the contents of the shipment
have been checked completely and the instrument has passed the electrical and mechanicaltest.
Damages of the instrument caused by the shipment will be compensated by the shipper orcarrier. SIGLENT will not be responsible for the free repair or replacement.

2.

Inspect the instrument.
If there exit any mechanical damages or lacking of components, or the instrument fails theelectrical and mechanical test, please contact your SIGLENT sales.

3.

Check the accessories.
Check the accessories according to the packing list carefully. If there exit any accessories
damaged or missing, please contact your SIGLENT sales.

SDM Series QuickStart

1

Appearance and Size
SDM3065X

345.45mm
260 .29mm

107.21 mm

SDM3045X、SDM3055X

2SDM Series QuickStart

To adjust the Handle
Please grip the handle by the two sides and pull it outward to adjust the handle position of theMultimeter. Then rotate the handle to the appropriate position. Please operate as the following
figure:Handle Adjustment

Horizontal Position

SDM Series QuickStart

Carrying Position

3

Front PanelLCD Display

Measurement and Assistant Function KeysUSB HostRange and Direction Keys

Power Key

Signal input terminals

Menu Operation Keys

4SDM Series QuickStart

Rear Panel

Power SocketLANPower FuseVMC Output

AC Voltage SelectorExt trigger

Inspection card (option)

Current Input Fuse

USB Device

SDM Series QuickStart

5Connect Power Cord
Before connect the instrument to a power source, please select the AC voltage selector on therear panel of your multimeter according to the power supply. Then connect the power cord asshown in the following figure.

Connect Power Cord

Press the Power key on the front panel to start up the multimeter.
If unable to start up the multimeter, take the follow steps:
1.

Check the power cord connection.

2.

After the inspection, if the power key is not lit, please take out the fuse and check, change
the fuse if needed.

3.

6

After the above inspections, the power key is still not lit, please contact SIGLENT for help.

SDM Series QuickStartPower Selection
The Multimeter is able to operate on multiple power distribution standards and must be set up
according to the supply voltage. If the selected supply voltage doesn’t match the working voltage
while using, the setting of the Multimeter’s supply voltage must be changed. The power selector
is located under the power fuse on the rear panel.

Change the Power Fuse
The power fuse is located in the fuse block on the back panel. The Multimeter has installed apower fuse before leaving the factory. It’s a kind of fast-melt, no-burst, F300mA, 5×20mm one.

Change the fuse

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7

Connect Test Leads
1.

DC Voltage Measurement
Connect the test leads and tested circuit as the following figure, red test lead to the HI
Terminal and black lead to the LO Terminal.

2.

AC Voltage Measurement
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

8SDM Series QuickStart

3.

DC Current Measurement
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

4.

AC Current Measurement
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

SDM Series QuickStart

95.

2-Wire Resistance Measurement
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

6.

4-Wire Resistance Measurement
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and HI Sense and black lead to the LO Terminal and LO Sense.

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7.

Capacitance Measurement
Connect the test leads and tested capacitor as the following diagram, red test lead to thepositive pole of the capacitor and black lead to the negative pole.

8.

Continuity Testing
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

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9.

Diode Testing
Connect the test leads and tested diode as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

10. Frequency/Period Measurement
Connect the test leads as the following diagram, red test lead to the HI Terminal and black
lead to the LO Terminal.

12

SDM Series QuickStart

11. Temperture Measurement
Connect the test leads and tested circuit as the following diagram, red test lead to the HI
Terminal and black lead to the LO Terminal.

TC and RTD Sensor

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13

Connect USB and LAN Ports
SDM3055 Series Digital Multimeter has plenty of I/O ports. To use any of the ports, follow thenext instruction:

Connect USB HostConnect USB Device

Connect LAN

14

SDM Series QuickStart

Use Safety Lock
You can use the safety lock to lock the multimeter in a fixed place if necessary. The methods areas the following:1.

Align the key into the keyhole in the vertical direction of the back panel.

2.

Then rotate clockwise to lock the multimeter.

3.

Remove the key at last.

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15

Troubleshooting
The general failures and consequential solutions are listed below. When you find them, pleasedeal with them in the following corresponding ways. If the problem proves to be unsolvable byyourself, please contact SIGLENT for help.
1.

2.

3.

4.

If the screen is still dark with nothing displayed after pressing the power key:
1)

Check if the power is correctly connected.

2)

Check if the power fuse has blown. Replace it if necessary.

3)

If the instrument still can’t start up properly, please contact SIGLENT.

The reading doesn’t change when connecting an AC current signal:
1)

Check if the test lead is correctly connected to the current jack or LO jack.

2)

Check if the fuse in the current location on the back panel has blown.

3)

Check if the measure location has switched to the DCI or ACI place correctly.

4)

Check if the input is ACI but the measure location is in DCI place.

The reading doesn’t change when connecting a DC current signal:
1)

Check if the test lead is correctly connected to the current jack or LO jack.

2)

Check if the fuse in the current location on the back panel has blown.

3)

Check if the measure location has switched to the DCI or ACI place correctly.

4)

Check if the input is DCI but the measure location is in ACI place.

USB storage can’t be recognized:
1)

Check if the USB can work normally.

2)

Make sure that the USB storage being used is of flash type, the instrument does notsupport USB of hardware type.

3)

Make sure that the capacity of the USB storage is not too large. It is suggested that thecapacity of the USB matches to the multimeter is no larger than 4G.

164)

Restart the instrument and then insert the USB to check it.

5)

If it is still in abnormal use, please contact SIGLENT.

SDM Series QuickStart

Contact SIGLENTSIGLENT TECHNOLOGIES CO.,LTD
Address: 3/F, building NO.4, Antongda Industrial Zone, 3rd
Liuxian Road, Bao’an District, Shenzhen, P.R.China
Tel: 0086-755-3661 5186
E-mail: sales@siglent.com
Http://www.siglent.com

SDM Series QuickStart

17

About SIGLENTSIGLENT is an international high-tech company, concentrating on R&D, sales,
production and services of electronic test & measurement instruments.

SIGLENT first began developing digital oscilloscopes independently in 2002.

After more than a decade of continuous development, SIGLENT has extended
its product line to include digital oscilloscopes, isolated handheld
oscilloscopes,

function/arbitrary

waveform

generators,

RF/MWsignalgenerators, spectrum analyzers, vector network analyzers, digital multimeters,
DC power supplies, electronic loads and other general purpose test
instrumentation. Since its first oscilloscope was launched in 2005, SIGLENT
has become the fastest growing manufacturer of digital oscilloscopes. We
firmly believe that today SIGLENT is the best value in electronic test &measurement.

Headquarters:
SIGLENT Technologies Co., Ltd
Add: Bldg No.4 & No.5, Antongda Industrial
Zone, 3rd Liuxian Road, Bao'an District,
Shenzhen, 518101, China
Tel: + 86 755 3688 7876
Fax: + 86 755 3359 1582
Email: sales@siglent.com
Website: int.siglent.com

North America:
SIGLENT Technologies America, Inc

6557 Cochran Rd Solon, Ohio 44139
Tel: 440-398-5800
Toll Free: 877-515-5551
Fax: 440-399-1211
Email: info@siglentna.com
Website: www.siglentna.com

Europe:SIGLENT Technologies Germany GmbH
Add: Staetzlinger Str. 7086165 Augsburg, Germany

Follow us on
Facebook: SiglentTech

Tel: +49(0)-821-666 0 111 0
Fax: +49(0)-821-666 0 111 22
Email: info-eu@siglent.com
Website: www.siglenteu.com

18SDM Series QuickStart