Hang Zhou Tronstol technology Co., Ltd.
Hang Zhou Tronstol technology Co., Ltd.

The multimeter is often used in the inspection and maintenance of the SMT machines. As its name states, it is a meter capable of measuring multiple things related to electricity, namely: Voltage, Current and Resistance.



Continuity

Continuity is quite possibly the single most important function for troubleshooting and debugging circuits. This feature allows us to test for conductivity of materials and to trace where electrical connections have been made or not made. Set the multimeter to “Continuity”mode. It may vary among DMMs, but look for a diode symbol with propagation waves around it (like sound coming from a speaker).

Touch the two probe ends together. Do you hear the tone? Checking for continuity is sometimes also called "ringing out" a  circuit. You can use this to test which holes on a breadboard are connected and which ones aren’t. You can also use this to trace out a circuit. Because you often can't see where all of the wires go, this is a quick way to test to see if two points are connected electrically.


Measuring Resistance

Similar to testing for continuity is measuring resistance. The continuity setting simply rings a tone when the resistance is low (on the order of a few ohms). But, if you want to know an actual value for the resistance, this is the setting you want. Turn the knob to one of the resistance settings. These are marked by the Omega symbol(Ω). This represents the unit ohms which is used to measure resistance.

There are several settings possible. These are ranges and represent the maximum range that you can measure. If you want to measure a small resistor to a high accuracy, you might set the multimeter to the 200Ω setting. Notice that there are no zeros displayed. This means that the meter senses the resistance to be greater than the range. Try moving the range up a notch and measuring it again.

Because the display has no units on it, it is assumed that the number displayed matches the same units as the setting. If you have the range set to 200Ω, then the display will be in Ω. If you have the range set to 2kΩ, 20kΩ, or 200kΩ, then the value displayed will be in units of kΩ.


Measuring Voltage

Voltage is a measurement of electrical potential between two points. It is sometimes also called the potential difference. Similar to the settings when measuring resistance, the various settings for measuring voltage specify the maximum range.

You will notice that there are two different ranges when measuring voltage. The one on the top has two straight lines and the one below has a squiggly line. The two straight lines indicate direct current(DC) measurements. This is what is most common in electronics. The other one is alternating current(AC),and this is the type of electricity that is found in the walls of your house. Be sure that you have the knob turned to the right setting. The 20V setting is probably the most typical for our applications.

Now, lets measure the voltage on an Arduino board. Plug your Arduino board into your computer using the USB cable for power. To measure voltage, connect the black probe to GND or ground. Now, use the red probe to test the voltage at various points (with respect to GND).


Measuring Current

Current is the rate of moving charges in a circuit. We now know that this is the movement of electrons, but by convention, we still look at current as the movement of charges from positive(+)to negative (-). In order to capture the rate of moving charges, you need to break the circuit and put the meter in-line where you want to measure current. Move the knob to the appropriate current range at you expect to measure. If you are measuring anything above 200 MA, you need to also move the red probe to the 10A port.

To measure the current going through a simple LED and resistor circuit, for example, you would have to first splice into the circuit somewhere. Here, we spliced into the circuit just after the LED. The current path must go through the meter. Because this is a series circuit, you can measure the current anywhere along this path.

When you are measuring current, be very careful not to exceed the limits. When you go beyond the current limits, you run the risk of also blowing a fuse on the multimeter. The standard MAvΩ port can handle up to 200 MA. If you think you'll be measuring more than this, move the red probe to the 10A port and change knob to the 10A setting.

Relate News
CONTACT US
jemma.zhang@tronstol.com
86-571-26265158
4th Floor, Building 5, No. 2, Huayi Road, Yuhang Street, Yuhang District, Hangzhou
Have a question ?
Get in touch
Whether you have a question about product features, shipping, site policies or anything else, we're here to help and ready to answer your questions.
Contact info
86-571-26265158
jemma.zhang@tronstol.com
4th Floor, Building 5, No. 2, Huayi Road, Yuhang Street, Yuhang District, Hangzhou
Offline Software - The User Manual Of CSV Change To XML Discussion About The SMT Solder Paste Knowledge The Advantage of Tronstol A1 mounter machine-(1) The Advantage of Tronstol A1 mounter machine-(2) Common Sense Of Tronstol A1 PNP Machine Maintain How to Use a Multimeter The Reasons and Solutions of PNP Drop Component What's the Grating Ruler What to Consider When Buying Pick and Place Machine What is SMT technology? Home Pick and Place Machine Pick and Place Machine TronStol A1 Reflow Oven D5 (Desktop) Semi-automatic Solder Printer YS350 Conveyor C08 Electric Feeder After-Sale Service Automotive ELEXCON 2020 Brochure About Trosntol ​Tronstol A1 Pick and Place Machine Line1 Tronstol 3V (Standard) Pick and Place Machine Line1 Auto Loader+Tronstol A1 Pick and Place Machine*2 Line1 How To Mount 0201 With Tronstol 3v P&p Machine Tutorial IC Placement Pick and Place machine Tronstol 3V General Questions of TronStol Products Soldering Robot Machine SMT Assembly Pick and Place Machine TronStol 3V Advanced Reflow Oven L5 Semi-automatic Solder Printer YS600 Conveyor C10 Vibration Feeder Our History Videos Communication Equipment Tutorial Feeder Installation Guide for Tronstol A1 2020 Electronica China Tronstol A1 Pick and Place Machine Line2 Tronstol 3V (Advanced) Pick and Place Machine Line2 Auto Loader+Tronstol A1 Pick and Place Machine*3 Line2 Solder Printer User Manual Adjustment Method of the Direction and Position of Components for LED Pick and Place Machine How Does the SMT Mounter Machine Production Line Work Processing Flow and Precautions of SMT Production Appearance Introduction Of Tronstol 3v Pick and Place machine Tronstol A1 FAQs of Pick and Place Machine TronStol A1 SMT Assembly Line Pick and Place Machine TronStol 3V Standard Reflow Oven D8 (Desktop) Semi-automatic Solder Printer YS1200 Conveyor C12 Label Feeder Factory Show Document Download IOT Tronstol A1 Pick and Place Machine Line3 Tronstol 3V (Standard) Pick and Place Machine Line3 Auto Loader+Tronstol A1 Pick and Place Machine*2 Line3 The User Manual Of Solder Paste Mixer Resolution and Accuracy of SMT Mounter Component Loader FAQs of Pick and Place Machine TronStol 3V Reflow Oven L8 Full-automatic Solder Printer PM400A Conveyor C15 IC Camera Honor Certificates & Patent Prototype SMT Line Application Consumer Electronics Tutorial-Machines Parts Introduction Tronstol A1 Pick and Place Machine Line4 Tronstol 3V (Advanced) Pick and Place Machine Line4 Auto Loader+Tronstol A1 Pick and Place Machine*3 Line4 Technique Support Selection and Function of Pick and Place Nozzle How To Mount Led With Tronstol 3v P&p Machine FAQs of SMT Accessories Brochure of Tronstol E1 Pick and Place Machine About TronStol Reflow Oven L12 Auto Loader SL400 Nozzle Quality Control Grating Ruler Sensors Makes PNP More Precisely Small Production SMD Line Medical Tronstol A1 Pick and Place Machine Line5 Tronstol 3V (Advanced) Pick and Place Machine Line5 Auto Loader+Tronstol A1 Pick and Place Machine*3 Line5 What Should Be Paid Attention to When Choosing SMT Equipment How To Use Vibration Feeder To Mount Sop16 Tronstol 3v P&p Machine SMT Label Feeder from Tronstol FAQs of SMT Assembly Line High Precise Screen Printing Table TP3040 Brochure of SR5331R Services & Resources Auto UnLoader XL400 Shipping Info Mass Production SMT Line Tutorial The calibration of Dcam Team Tronstol A1 Pick and Place Machine Line6 Tronstol 3V (Standard) Pick and Place Machine Line6 Tronstol A1 Pick and Place Machine*2 Line6 SMT Technological Process LED What Is the Difference between a Placement Machine and a Labeling Machine? Tutorial How To Install Tape&reel,tube ,tray In Tronstol 3v Mounter Machine FAQs of Other SMT Line Machines Blog FAQ Company News Tutorial-How to import a coordinate file Tronstol A1 Pick and Place Machine Line7 Tronstol 3V (Advanced) Pick and Place Machine Line7 Tronstol A1 Pick and Place Machine*2 Line7 The Details Process Of Reflow Soldering How to Deal with Problems in the Use of Mounter Machine? Contact Us Research & Development Tronstol A1 Pick and Place Machine Line8 Tronstol 3V (Standard) Pick and Place Machine Line8 Tronstol A1 Pick and Place Machine*2 Line8 The Different Between Manual Welding And Fully Automatic Welding Other SMT Line Machines The annual mobilization meeting in 2021 Tutorial Install Feeder Extension Board Search Result Reflow Oven Tronstol A1 Pick and Place Machine Line9 Tronstol 3V (Standard) Pick and Place Machine Line9 Tronstol A1 Pick and Place Machine*2 Line9 The Temperature Setting Method Of Reflow Soldering Several Common Ways to Assemble SMD Tutorial How To Update X And Y Drive Sitemap Stencil Printer Tutorial Appearance Introduction for Tronstol A1 Tronstol A1 Pick and Place Machine Line10 Tronstol 3V (Advanced) Pick and Place Machine Line10 Tronstol A1 Pick and Place Machine*2 Line10 Several Commonly Used Test Methods for PCB 404 Conveyor Tutorial How to make AD export CSV for Tronstol A1 Tronstol 3V (Standard) Pick and Place Machine Line11 Tronstol A1 Pick and Place Machine*2 Line11 What is the Assembly Process of Circuit Board? Privacy Policy Loader and Unloader Tutorial-12MM, 16MM, 24MM Reel tape installation for Tronstol A1 Tronstol 3V (Advanced) Pick and Place Machine Line12 Auto Loader+Tronstol A1 Pick and Place Machine*3 Line12 Several Factors Affecting the Solder Paste Printing Process Submission Successful! Tutorial How To Install And Use Vibration Feeder On Tronstol A1 Pick And Place Machine Introduction of the Types of Smt Mounter Machine Mount Head Soldering Machine Taggg Solder Paste Mixer What Indicators Need to Be Tested Before the SMT Production? What should Be Considered when Starting SMT Mounter Machine? How to Optimize Smt Mounter Machine Equipment? Solder printer Tronstol TP3040 Selection of Suction Nozzle of Pick and Place Machine Accessories Performance Evaluation Method of Pick and Place Machine Notes for the Use of the Pick & Place Machine The Functions of Suction Nozzle of Pick and Place Machine Who Is Tronstol Tp3040(high Precise Screen Printing Table) How to adjust the temperature curve of solder paste What is PCB? New innovation for stencil printer- Tronstol TP3040 Tronstol 3V desktop PNP Machine Precautions for using PNP machine How to Improve the Efficiency of Pick and Place Machine Footprint and Packing of SMT Components SMT Mounter Machine Industrial Computer and Information Processing Technology SMT Mounter Machine Mechanical Movement Technology SMT Mounter Machine Vision Inspection and Sensor Technology Automatic Control Technology of SMT Mounter Machine The Solution to the Error of the Rotary Motor of the LED Pick and Place Machine How to Improve the Placement Speed of the Pick and Place Machine? The Three Major Development Trends of the Pick and Place Machine in the Future The Influence of the Suction Nozzle of the Small Pick and Place Machine on the Placement Rate Four Forms of Common Feeder Some knowledge about SMT What is BGA Why choose Tronstol MR30 drawer reflow oven Detailed Introduction of the Workflow of SMT Mounter Automatic Patch Machine Can Meet Your Needs! How to Solve the Problems of Abnormalities in the LED Placement Machine Pickup? Notes on SMT Mounters Processing and the Advantages Characteristics and Applications of the Tabletop Pick and Place Machine Reasons Why the Feeder Affect the Pick and Place Efficiency of the SMT Pick and Place Machine The Difference Between Multi-function Pick and Place Machine and High-speed Pick and Place Machine How to Deal with the Alarm of SMT Pick and Place Machine?