Multimeter dt830b instructions for use. How to take measurements with an electronic tester (multimeter) DC voltage measurement mode

The DT-830B multimeter is a Chinese-made device that is used by many. Those who constantly deal with electronics cannot do without such equipment. This article describes what the DT-830B multimeter is. The instructions with a detailed description of the device allow even beginners to use it.

There are many models available that differ in quality, accuracy and functionality.

The device is designed for the following basic measurements:

• electric current values;
• voltage between 2 points in an electrical circuit;
• resistance.

In addition, the DT-830B multimeter and other related models can perform many additional operations:

• ring the circuit when the resistance is below 50 Ohms with an audible alarm;
• test the semiconductor diode for integrity and determine its forward voltage;
• check the semiconductor transistor;
• measure electrical capacitance and inductance;
• using a thermocouple;
• determine the frequency of the harmonic signal.

How does a multimeter work?

1. The dial shows the measured values ​​as numbers on a plastic or glass display.
2. The switch allows you to change the functions of the device, as well as switch ranges. When not in use, it is set to the "Off" position.
3. Sockets (connectors) in the housing for installing probes. The main thing, with the inscription COM and negative polarity, has a general purpose. A probe with a black wire is inserted into it. The next one, marked VΩmA, has positive polarity with a red probe.
4. Test flexible wires red and black with clamps.
5. Panel for monitoring transistors.

Multimeter DT-830B: instructions with a detailed description of measurement modes

Not everyone understands how to measure the necessary parameters with a device. When using the DT-830B multimeter, the operating instructions must be followed exactly. Otherwise, the device may burn out.

1. Resistance measurement

The function is necessary when you need to carry out electrical wiring in an apartment or find a break in the home network. Not everyone knows how to use a multimeter in this case, but you just need to set the switch in the resistance measurement sector to the appropriate measurement range. The device has an audible alarm indicating that the circuit is closed. If there is no signal, this means that there is a break somewhere or the circuit resistance value is higher than 50 ohms.

The range of minimum resistance (up to 200 Ohms) is called a short circuit. If you connect the red and black probes, the device should show a value close to zero.

The Chinese-made DT-830B multimeter has the following features when measuring electrical resistance:

1. High reading error.
2. When measuring small resistances, the value obtained at the contact of the probes should be subtracted from the readings. To do this, they are pre-closed. On other ranges of the sector the error decreases.

2. How to measure DC voltage

The device switches to the DCV sector, divided into 5 ranges. The switch is set to a obviously larger range of values. When measuring voltage powered by a 3 V or 12 V battery, you can set the sector to position “20”. You should not set it to a higher value, since the reading error will increase, and if it is lower, the device may burn out. For rough measurements, if you need accuracy of only up to 1 V, the multimeter can be immediately set to the “500” position. The same is done when the measured voltage is unknown in magnitude. Afterwards, you can gradually switch the range to lower values. The highest measurement level is indicated by the "HV" warning, which lights up in the upper left corner. Large voltage values ​​require caution when working with the device, although as a voltmeter from the DT-830B multimeter it is more reliable than an ammeter or ohmmeter.

It is not necessary to maintain the polarity of the probes for a digital device. If it does not match, this will not affect the value of the readings, and the “-” sign lights up on the left side of the screen.

3. How to measure AC voltage

Installation in the ACV sector is carried out in the same way as in the DCV. 220-380 V can lead to failure of the device if connected incorrectly.

4. Direct current measurement

Small currents for electronic circuits are measured in the DCA sector. Voltage measurement is not permitted in these switch positions. In this case, a short circuit will occur.

To measure current values ​​up to 10 A, there is a third socket into which the red probe should be moved. Readings can be taken in just a few seconds. Typically, an ammeter is used to measure the current of electrical appliances. In this case, the device should be used carefully and when measurements are really necessary.

5. Monitoring the health of diodes

In the reverse direction, the diode should show infinity (one on the left). In the forward direction, the voltage at the junction is 400-700 mV.

In this sector you can also check the serviceability of the transistor. If you imagine it as two back-to-back diodes, you need to check each transition for breakdown. To do this, find out where the base is located. For the pnp type, you need to use a positive probe to find such a pin (base) so that the minus probe shows infinity on the other two (emitter and collector). If the transistor is of the npn type, the base is located with the negative probe. To find the emitter, you need to measure the resistance of its junction, which is always greater than the collector. For a working element it should be in the range of 500-1200 Ohms.

By testing the transitions with a multimeter in the forward and reverse directions, you can determine whether the transistor is working or not.

6. hFE sector

The device can determine the current gain of the h21 transistor. To do this, just insert its 3 pins into the corresponding sockets of the socket. The display will immediately show the value "h21". To obtain correct results, it is necessary to distinguish between pnp (right side of the socket) and npn (left side) types.

7. Possibilities for improving the device

The instructions for the DT-830B multimeter provide a certain number of functions. The models differ slightly from each other, and if desired, you can improve any of them, for example, add measurement of capacitance of the capacitor, temperature and all the other additional functions listed earlier.

The basis of a multimeter is

Multimeter DT-830B: circuit and repair

For an inexpensive small-sized device, the ICL7106 chip is most often used.

When measuring voltage, the signal comes from the switch through resistor R17 to input 31 of the microcircuit. When an alternating voltage is measured, it is rectified through diode D1, after which the signal also passes through the chain to pin 32 of the microcircuit.

The measured direct current is created across the resistors, after which the signal is also supplied to input 32. The microcircuit is protected by a 0.2 A fuse installed at the input.

The device often fails when contacts are lost or turned on incorrectly. First of all, check and change the fuse.

The device works reliably when measuring voltage, since it is well protected at the input from overloads. Failures may occur when measuring resistance or current.

Burnt resistors can be identified visually, and diodes and transistors can be checked using the methods given earlier. A check is made for the absence of breaks and reliability of contacts.

When repairing the device, the power supply is first checked. Then the serviceability of the microcircuit is checked. It should be operational if the voltage at pin 30 is 3 V, and there is no breakdown between the power supply and the common pin of the microcircuit.

When disassembling, do not lose the switch balls, without which it will not be securely fixed.

When to change the battery?

The power supply of the device changes in cases where the numbers on the display disappear and the measurement results deviate from the approximate known values. A battery image appears on the screen. To replace it, you need to remove the back cover, remove the old one and install a new element.

Using the DT-830B multimeter is very convenient: the battery is changed easily and very rarely. You just need to work with it very carefully. The device can easily be burned if used incorrectly.

A multimeter is one of the inexpensive measuring instruments that is used by both professionals and amateurs who repair home wiring and electrical appliances. Without it, any electrician feels like he has no hands. Previously, three different instruments were required to measure voltage, current, and resistance. Now all this can be measured using one universal device. Using a digital multimeter is very easy.

The main two rules to remember:

• ⚡ where to connect the measuring probes correctly
• ⚡ in what position should the switch be set to measure different quantities?

Multimeter appearance and connectors

On the front of the tester, all the inscriptions are made in English, and even using abbreviations.

What do these inscriptions mean:

• OFF - the device is turned off (to prevent the device batteries from running out, set the switch to this position after measurements)
• ACV - measurement of variable U
• DCV - constant U measurement
• DCA - DC current measurement
• Ω - resistance measurement
• hFE - measurement of transistor characteristics
• diode icon - continuity test or diode test

Switching modes occurs using the central rotary switch. When you first start using your digital multimeter, it is recommended that you immediately mark the pointer mark on the switch with contrasting paint. For example like this:

Most device failures are due to the incorrect choice of switch position.

Power is supplied from a Krona battery. By the way, by looking at the connector for connecting the crown, you can indirectly judge whether the tester was assembled in a factory or somewhere in Chinese “cooperatives”. With high-quality assembly, connection occurs through special connectors designed for the crown. Lesser quality options use regular springs.

The multimeter has several connectors for connecting probes and only two probes. Therefore, it is important to correctly connect the probes to measure certain quantities, otherwise you can easily burn the device.

The probes are usually of different colors - red and black. The black probe is connected to the connector labeled COM (translated as “common”). Red probe into the other two connectors. The 10ADC connector is used when it is necessary to measure current from 200mA to 10A. The VΩmA connector is used for all other measurements - voltage, current up to 200mA, resistance, continuity.

The main criticism is caused by the factory probes that come with the device. Almost every second owner of a multimeter recommends replacing them with better ones. However, their cost can be comparable to the cost of the tester itself. As a last resort, they can be improved by strengthening the bends of the wires and insulating the tips of the probes.

If you want high-quality silicone probes with a bunch of tips, then you can order them with free shipping on AliExpress.

Previously, pointer testers were also widely used. Some electricians even prefer them, considering them more reliable. However, due to the large error of the measurement scale, it is less convenient for ordinary consumers to use them. In addition, when working with a dial multimeter, it is imperative to guess the polarity of the contacts. For digital ones, if they are connected to the poles incorrectly, the readings will simply be displayed with a minus sign. This is normal operation and will not damage the multimeter.

Basic Multimeter Operations

Voltage measurement

How to use a digital multimeter to measure voltage? To do this, set the switch on the multimeter to the appropriate position. If this is the voltage in the outlet at home (alternating voltage), then flip the switch to the ACV position. Insert the probes into the COM and VΩmA connectors.

First of all, check that the connectors are connected correctly. If one of them is mistakenly installed in contact 10ADC, a short circuit will occur when measuring voltage.

Start measuring from the maximum value on the device - 750V. The polarity of the probes does not play any role at all. It is not necessary to touch the zero with a black probe, and the phase with a red one. If a much lower value is displayed on the screen, and the number “0” appears in front of it, this means that for a more accurate measurement, you can switch to another mode, with a smaller voltage level scale that your multimeter allows you to measure.

When measuring DC voltage (for example, electrical wiring in a car), switch to DCV mode.

And you also start measuring from the largest scale, gradually lowering the measurement levels. To measure voltage, you need to connect the probes in parallel to the circuit being measured, while using your fingers to hold only the insulated part of the probe so as not to get under voltage yourself. If the display shows a voltage value with a minus sign, this means that you have reversed the polarity.

ATTENTION: when measuring voltage, be sure to check that the multimeter scale is set correctly. If you start measuring voltage with the DCA switch in the on position, i.e., measuring current, you can easily create a short circuit right in your own hands!

Some experienced electricians recommend holding both probes in one hand when measuring the voltage in an outlet. If the probes are poorly insulated and breakdown, this will allow you to protect yourself to some extent from electric shock.

The multimeter operates on a battery (a 9-volt crown is used). If the battery starts to run low, the multimeter starts to lie shamelessly. In the outlet, instead of 220V, it may seem like 300 or 100 Volts. Therefore, if the device readings begin to surprise you, first check the power supply. An indirect sign of battery discharge can be chaotic changes in the readings on the display, even when the probes are not connected to the object being measured.

Current measurement

The device can only measure direct current. The switch must be in the – DCA position.

Be careful! When measuring current, if you do not know approximately what limits the current will be, it is better to start measuring by inserting the probe into the 10ADC connector, otherwise measuring a current of more than 200mA at the VΩmA connector can easily blow the internal fuse.

Here, probes, unlike voltage measurements, must be connected in series with the object being measured. That is, you will have to break the circuit and then connect the probes into the resulting gap. This can be done in any convenient place (at the beginning, middle, end of the chain).

In order not to constantly hold the probes with your hands, you can use alligator clips for connection.

Know that if, when measuring current, you mistakenly set the switch to ACV mode (voltage measurement), then most likely nothing bad will happen to the device. But if it’s the other way around, the multimeter will fail.

Resistance measurement

To measure resistance, set the switch to position - Ω.

Choose the desired resistance value or start again with the largest one. If you are measuring resistance on some operating device or wire, it is recommended to turn off the power from it (even from the battery). This way the measurement data will be more accurate. If during measurement the value “1, OL” appears on the display, this means that the device is signaling an overload and the switch needs to be set to a larger measurement range. If “0” is displayed, then on the contrary, reduce the measurement scale.

Most often, a multimeter in resistance mode is used during repair work, to check the functionality of household appliances, the serviceability of the windings, and the absence of a short circuit in the circuit.

When measuring resistance, do not touch the bare parts of the probes with your fingers - this will affect the accuracy of the measurements.

Calling

Another operating mode of the tester that is often used is dialing.

What is it for? For example, in order to find an open circuit, or vice versa - to make sure that the circuit is not damaged (checking the integrity of the fuse). The level of resistance is no longer important here; it is important to understand what is wrong with the circuit itself - whether it is intact or not.

It should be noted that there is no sound signal on the DT830B.

For other brands, as a rule, the signal is heard at a circuit resistance of no more than 80 Ohms. The dialing mode itself occurs when the pointer is positioned - checking the diodes.

It is also useful to check the integrity of the probes themselves by testing them by connecting them to each other. Since with frequent use they may be damaged, especially at the point where the wire enters the probe tube. Before each measurement, be sure to make sure that there is no voltage in the area where you will connect the test leads, otherwise you may burn the device or create a short circuit.

Safety precautions when working with a multimeter

• ⚡ do not take measurements in a damp room
• ⚡ do not switch measurement limits during the measurements themselves
• ⚡ do not measure voltage and current if their values ​​are greater than those for which the multimeter is designed
• ⚡ use probes with good insulation

I hope this material helped you become familiar with the basic operating parameters of a multimeter. And you can safely and productively use it during repair work.

This digital multimeter is not the first in my household. There were already two similar ones. But the trouble is, the Chinese digital multimeter does not last very long. Either the wires are falling off or the screen is. This time I decided to choose a multimeter in which the wires are located in the case, since storing the wires separately is not always convenient, especially in a car. After all, I use it mainly as a car multimeter, since sometimes it is useful to check the battery with a multimeter. or the “charging” will disappear, you will have to check the generator, diodes, take measurements with a multimeter in different circuits of the car. The only drawback that this digital multimeter has, which upset me a little, is the lack of a sound signal in the “dialing” mode. But since there were no other such mobile multimeters to choose from, I had to buy this particular multimeter, and the price, although higher than the cheapest Chinese one, was still not so high. And I don’t use a digital multimeter as a tester very often, so the lack of a sound signal is not such a drawback. I didn't have the multimeter for very long, no more than a year. But in the harsh winter, I recklessly decided to use it in severe frost. So the wires simply broke like matches. In general, non-replaceable wires are sometimes a minus in the properties of the machine.

Digital Multimeter DT 831 * Digital Multimeter

Low battery indicator
Overload protection
Digital LCD display
Battery used: 9V, crown, 6F22
Weight: 145 grams.

A multimeter is a universal portable device designed to measure various electrical (electronic) quantities. The multimeter can replace several devices, because It can be used to measure voltage, current, resistance, etc.

For example, the functionality of some multimeters additionally allows you to measure temperature, test transistors, semiconductors, etc. Many models of multimeters have a function that automatically turns off the display when the device is not active, and also has a backlight function.

Multimeters have long been used as portable measuring instruments both in production and at home.

Modern multimeters come in two types: analog and digital. When using an analog multimeter, the measured value is determined by the position of the arrow on the instrument scale. With digital multimeters, the measured value is displayed on a liquid crystal display in the form of numbers.

Digital multimeters are used in practice more often than analog ones. The main reason is the high accuracy of measurements and convenience in displaying the measured value. But analog devices also have their advantages.

To use a multimeter correctly, you need to know its basic structure and basic operating modes. Multimeters of different models may differ in size, appearance and number of measured quantities, but the basic functionality is the same for all.

The simplicity of the device, basic functionality and additional modes is demonstrated by the DT-831 digital multimeter.

Design and equipment of the DT-831 multimeter

At the top of the front panel there is a digital display, in the center there is a multi-position switch for measurement modes, and at the bottom there are three sockets for measuring probes.

When purchasing a multimeter, it is a good idea to know what is included in the package. Each product, including the DT-831, is supplied with two test leads, one 9V Krona battery, one user manual and a packaging box.

Multimeter functionality

Regardless of the type and type, any multimeter allows you to measure basic electrical quantities. This also applies to the DT-831 model.

• Alternating current voltage is measured in ACV (alternating current voltage) mode.
• DC voltage measurement is performed in DCV (direct current voltage) mode.
• Direct current measurements are performed in DCA (direct current amps) mode.
• Electrical resistance is measured in Ω mode.

For measurements, in addition to the main modes, additional modes are also used. For example, the semiconductor image is a diode test mode. Sound image – the mode of continuity of circuits with a buzzer.

The device is turned off by setting the multi-position switch to OFF mode.

Before measurements, the black probe is connected to a common socket marked COM (common), and the red measuring probe is connected to the VΩmA socket. Sometimes it is necessary to measure direct current with a value of more than 200mA. In this case, the red test probe must be connected to the “10A” socket.

How to use the DT-831 multimeter for dummies - Video

AC voltage measurement

In domestic conditions, voltage is most often measured in sockets, in adapter boxes, in distribution panels, in metering panels. The standard value of this voltage is about 220V. In production, alternating voltage is measured in switchgears, power cabinets, protection devices, etc. If in a household network the voltage is usually single-phase, then in production there is both single-phase voltage 220V and three-phase 380V.

The first measurement is made as follows. The multi-position switch is set to the maximum limit. For the DT-831 multimeter it is 750V. After this, the actual measurement is performed by connecting the multimeter in parallel to the element or section of the circuit being measured. For example, the phase voltage is measured relative to zero (phase voltage), or between two phases of a three-phase network (line voltage).

If the voltage value (and other values ​​in a different measurement mode) is significantly less than the maximum limit (for example, 150V), then for greater accuracy the multi-position switch switches to a lower limit. In ACV mode this will be a 200V limit.

DC voltage measurement

In home living conditions, measuring DC voltage comes down to measuring the voltage of ordinary batteries, car batteries, and power supplies from household appliances. In production, DC voltage sources are rectifiers, DC generators, etc.

Measuring DC voltage is not much different from measuring AC voltage. The only difference is that the measurement in DCV mode is performed between plus and minus. In addition to directly measuring voltage, the DCV mode allows you to determine the polarity in DC circuits.

If the voltage value is known in advance before measurement (for example, a 1.5V AA battery), then the multi-position switch can be immediately set to the nearest limit (20V).

DC current measurement

This measurement is performed in DCA mode. A multimeter, like an ammeter, is connected in series to an open circuit. It is advisable to know the current value in advance in order to set the appropriate measurement limit.

How to measure resistance with a multimeter

Any multimeter model has a resistance measurement function. In Ω mode, you can measure the resistance of resistors, the value of electrical insulation resistance of wires, etc. Often in Ω mode they perform continuity testing of electrical circuits.

The DT-831 multimeter has five resistance measurement limits, ranging from 200 Ohms to 2000 kOhms (2MOhms). Resistance is measured by first selecting one of five limits.

If the measured value is greater than the set limit, “1” will be displayed on the multimeter display. In this case, it is enough to set the switch to a higher limit. If the display shows all zeros, then the actual resistance value is significantly less than the set limit and therefore the limit must be reduced.

Resistance measurements are only allowed when the voltage is turned off to avoid damaging the multimeter.

New models have replaced old measuring instruments for electrical circuits. Now, when measuring voltage or current, resistance, or circuit continuity, dial ammeters, voltmeters, ohmmeters or massive combined instruments, which were called testers from the word “test,” are not required. New devices, including the dt 830b multimeter, are small in size and perform all the listed functions in the body of one device.

Information about measurement results is displayed digitally as a four-digit number. To effectively use these devices, you need to understand what functions the device is capable of performing, how controls are installed when testing parameters within certain measurement limits.

Purpose and scope

Measuring instruments are in great demand, such as the digital multimeter dt 830b - among electricians for work in domestic conditions and in production. Compact dimensions, universal capabilities for measuring a large number of parameters of electrical circuits, the ability to test circuit integrity and check the serviceability of semiconductor circuit elements have made the device popular.

There are many modifications of the 830 series: analog with dial indication and digital, where the readings are displayed on a liquid crystal display, one of them is the multimeter model dt 830b. In a certain mode and measurement range, analog and digital instruments are inferior to each other; each type has its own disadvantages and advantages. In this case, we are considering the digital model dt830b.

Main technical characteristics

The digital multimeter is capable of testing the following electrical parameters.

Table of technical characteristics of the dt 830b multimeter

Measured electrical parameters	Current – ​​I A; Voltage of both types ~/–UV; Resistance R
Gain for transistors h21	+
Checking the chain for continuity	+
Diode check	+
Four digits on the display	1999
Measurement speed	3 measurements in 1 second
Error, in%	1
Measurement limits for various parameters:
U constant MAX	up to 1000V
U constant MIN	from 0.2 V
Measurement error – U	0.5% upward +2V
U~max	750V
U~ min	200V
Error when measuring U~	1.2% upward +10V
I max DC	10A
I min DC	0.0002A
error	2% upward +2A
Rmax	2 mOm
Rmin	200 Ohm
Capacity C max	20 mkF
Cmin	200 pF

Measuring ranges are set manually using switches on the front control panel. The dimensions of the device make it easy to carry in pockets or bags: 70 x 126 x 28 mm, weighing only 137 grams. When purchasing a dt 830b device, instructions are included with a description of the characteristics and main operating modes. The instructions for use discuss the design features of the devices, taking into account possible changes in the latest modifications. These devices are manufactured by Chinese factories, but the instructions (operating manual) have a Russian translation.

Multimeter controls

The main controls are a dial switch and terminals for probes, located on the front panel. Around the switch on the body there are zones for measuring parameters and markings of measurement limits; on top there is a liquid crystal display for displaying measurement results.

Important! During operation, the switch position is set to the sector of the measured parameter, to the corresponding limit of values. The probes are installed in the appropriate sockets; if the controls are installed incorrectly, the measurements will not be entirely accurate or may not correspond to reality at all. After use, be sure to set the switch to the Off position, in the upper vertical position, so as not to discharge the battery.

The procedure for measuring the main parameters

Electricians have to check the integrity of the wires in the circuit, the presence of contact on switches and relays, electronics specialists measure resistor values ​​by resistance, currents from the smallest limits of mA to tens of amperes, check semiconductor elements on printed circuit boards, capacitors, transistors, diodes and other radio components .

Continuity of chain sections

• The mode switch is placed on the diode mark, sometimes this mode is marked with a buzzer sign, thereby indicating that the device has a sound indication;
• Red probe into the connector with the sign – VΩ mA;
• Black probe into the connector - COM with a grounding sign;
• When you touch the opposite ends of the stripped wire with the probes and there is no break, the display will show 0000 or a value close to zero, this depends on the distance and material of the conductor;
• If the circuit is broken, the display will show 1.

Testing ~U values

• The measuring probes are in the same place, the switch is installed in the AC voltage measurement sector (the right side of the front panel at 13);
• The measurement limit is selected up to 200V or up to 750V; when measuring alternating U in the circuit of an outlet group, the limit of 750V is selected;

• Insert the probes into the sockets of the socket (the polarity does not matter), if there is voltage, the display will display 220, 230, maybe 210 V. Voltage fluctuations in the network are not uncommon, the main thing is that they are within the limits when the equipment is able to function. Consumer electronics stop working when they drop below 180V. In a normal network there should be 220-240V.

DC voltage measurement mode

Important! The operating instructions determine that the probes are always installed in the sockets (VΩ mA; and COM), the only exception is the measurement limit of 10A.

Knowing this feature, it is easier to navigate how to use a multimeter:

• Set the switch to the DCV measurement mode - U (this is the sector for testing DC voltage values) in the upper left corner of the panel;

• The measuring probes are connected to the contacts of the battery, in the case in the picture it is a 9V Krona battery. Polarities are observed: red wire to +, black to minus;
• The display shows the charge voltage; if the polarity is changed, there will be no disaster; the device shows a negative charge value, a minus sign, in front of the numbers.

Measuring DC current with a dt 830b multimeter (in mode up to 200 mA)

• We place the mode switch in the right sector of DCA;

Important! The current is measured only with the presence of a load in the circuit; the device is connected in series with the load. Directly connecting to a power source, as in the case of measuring voltages, is prohibited; the battery will lose discharge, and at high currents, the input circuits of the device may burn out.

• The measurement limit is selected at 200 mA, power supply in the circuit is 12V from the battery, a resistance of 200 Ohms is used as a load;
• The display shows a value of 57.3 mA.

DC current measurement up to 10A

Attention! In this measurement mode, we move the red probe into the “10A” socket, the lower right corner of the control panel.

• Mode switch in the same sector at 10A;

• Further measurements are carried out using the same methodology as in the mode up to 200 mA;
• Comparing the measurement readings at different limits of the same value, it is clear that there is a significant error: 57.3 and 50 mA. Therefore, it is recommended to measure quantities within their range.

Resistance measurement

The resistance measurement sector on the control panel is divided into five limits:

• Two in Ohm: 0 – 200; 0 – 2000;
• Two in kOhm: 0 – 20; 0 – 200;
• One in Mom: 0 – 2.

Depending on the value of the measured resistance, an appropriate limit is set. If you do not know the value of the parameter being measured, set the smallest limit, up to 200 Ohms, when the resistance is greater than this limit the display shows 1. Simply increase the measurement limit until correct readings appear.

Note! Resistance is measured with the contacts disconnected from other circuit elements. Soldered resistance in a printed circuit board cannot be measured.

Here we consider the most popular modes used in production and in domestic conditions. Semiconductor testing requires a more detailed review in a separate article. The multimeter is easy to use, has an affordable price and a large number of options.

Important! The device operates stably on a 9V Krona battery; when discharged to 6V, the errors become very large. Therefore, it is necessary to check the condition of the power source. This can be done with another device or replace the battery with a known good one with sufficient charge.

Video