Syntagon Instruments DT830L Digital Small Multimeter with Luminous with Beep How to use

DT-830L series is a small handheld 31 2-digit digital multimeter with stable performance, high reliability and anti-drop performance

1. Measurement of DC voltage.

When using, put the range switch on the corresponding range of the "DCV" gear, connect the black pen to the "COM" jack, and the red pen to the "V" jack, turn the power switch to "ON", and connect the meter pen to the circuit under test.

2. Measurement of AC voltage.

Dial the range switch to the corresponding range of the "ACV" block, and the meter pen is connected by the measurement jacks "V" and "COM", and the measurement method is the same as that of measuring DC voltage.

3. Measurement of DC current.

When the measured current is less than 200 mA, the red pen should be connected to the "MA" socket, and the black pen should be connected to the "COM" jack, and the power supply in the meter can be turned on to display the reading.

4. Measurement of alternating current.

Dial the range switch to the corresponding range of the "ACA" gear, and connect the instrument in series in the circuit under test. The red pen is connected to the "com" jack, and the red pen is connected to the "ma" or "10 A" socket according to the range, and the measurement method is the same as that of DC current.

It is basically the same as other digital multimeters: 1. The black meter pen is plugged into the COM port, the resistance measurement and voltage red meter pen is plugged into the V port, the small current red pen is plugged into the MA port, and the high-current red pen is plugged into the A port. 2. Press power to power on.

3. Dial the dial to the corresponding range, DC voltage v-, AC voltage v, AC current a, DC current a-, resistance gear, from a large range to a small range to the appropriate amount. When measuring the capacitance, dial the dial to the F gear, and insert the two pins of the measured capacitor into the CX hole and two holes respectively, and the range is also dialed from large to small to the appropriate range.

The beep level of the multimeter will be used, but do you know how it works?

The digital multimeter beep file is generally used to quickly judge the on-off and off-circuit circuit, and the buzzer will beep when the measurement is on. The resistance to beep is generally less than 30 50 ohms, and the minimum resistance of various brands of digital multimeters to make a noise varies.

It is generally used to detect the state of the diode, and the red pen output + voltage is often used to detect whether the circuit is on, because it is more convenient for the buzzer to make a sound below 50 ohms.

There is a measuring voltage at the measuring end, and when the measured resistance is low (generally below 30+ -20 ohms), the measuring voltage at the end will drop. There is a comparator inside, which inverts the comparator when the measurement end is lowered and drives the buzzer to work.

Therefore, in the buzzer mode, whether it is measuring a low resistance value of resistance, or inputting a small voltage (such as a negative voltage), the internal buzzer can be sounded.

A transformer: the transformer output has two heads, and the plug is plugged in (connected to the power supply) without knowing whether it is AC or DC output, or the output voltage

Put the multimeter in the AC 750V gear, the red and black pens are in contact with the two ends of the transformer respectively, look at the displayed value, if the displayed value is very small, disconnect the meter pen, dial the multimeter in the 200V gear test, if the display is 12, it is 12V. If you know that it is AC and DC, you probably know the output voltage, so you can turn the gear switch on the corresponding gear to measure.

In the case of power on, there is no indication of the measured voltage, and what transformer is broken.

Second, the test line.

Dial the multimeter to the resistance gear RX2000 or RX20K, the red and black pen touch both ends of the wire, see if the multimeter has any indication, if the indicator 1 means that the wire is broken, if the indication is 0, it means that the wire is not broken.

First, how to use:

Put the ON OFF switch to the ON position, check the 9V battery, if the battery voltage is insufficient, it will be displayed on the display, then the battery needs to be replaced. If your display doesn't show up, follow these steps.

The symbol next to the test pen jack indicates that the input voltage or current should not exceed the indicated value, which is to protect the internal wiring from damage.

Before the test. The function switch should be set to your desired range.

Second, a brief introduction to the digital multimeter:

A digital multimeter, a multi-purpose electronic measuring instrument, generally contains functions such as ampere meter, voltmeter, ohmmeter, etc., and is sometimes called a multimeter, multimeter, multimeter, or triple meter. DMMs are available as portable devices for basic fault diagnosis as well as devices placed on a bench, some with achievable resolutions.

Seventh, eighth. A digital multimeter (DMM) is an electronic instrument used in electrical measurements. It can have many special functions, but the main function is to measure voltage, resistance and current, digital multimeter, as a modern multi-purpose electronic measuring instrument, mainly used in physical, electrical, electronic and other measurement fields.

1》Test the power output of the router skewer (direct current): press the button to go to the (V-) file of the multimeter, which is the current position in the figure, the black table pen is in the (com) hole, and the red table pen is in the (V mA) hole. The second meter pen measures the inner and outer metal bodies of the power supply output skewer (direct current) to display the DC voltage.

2》The gear of the multimeter is pressed to the 200 places of the button to ( ), the two ends of the ** are measured with a two-meter pen, and the resistance is very small that is the path, if the multimeter shows 1 on the left and keeps flashing, it means that the wire is broken.

What is the use of a digital multimeter.

Please point my finger to test the output voltage of the charger, how to operate, please.

1. Look at the universal surface plate first.

2. Resistor, red pen and V socket plugged in, black pen and plugged into COM port. Measure both ends of a circuit or device. It can't be charged, otherwise the multimeter will burn out.

3. The DC voltage range is the same as the resistance range.

4. AC voltage, the same as resistance.

5. In AC current mode, the red watch pen is inserted into the MA or 10A jack, and the black watch pen is inserted into the COM jack. A multimeter is stringed into the circuit for measurement.

6. DC current gear, the red watch pen is inserted into the MA or 10A jack, and the black watch pen is inserted into the COM jack. A multimeter is stringed into the circuit for measurement.

Here's how to use the multimeter:

1. Look at the universal surface plate first.

2. Resistor, red pen and V socket plugged in, black pen and plugged into COM port. Measure both ends of a circuit or device. It can't be charged, otherwise the multimeter will burn out.

3. The DC voltage range is the same as the resistance range.

4. AC voltage, the same as resistance.

5. For AC current files, the red watch pen is inserted into the MA or 10A jack, and the black watch pen is inserted into the COM jack. A multimeter is stringed into the circuit for measurement.

6. For DC current files, the red watch pen is inserted into the MA or 10A jack, and the black watch pen is inserted into the COM jack. A multimeter is stringed into the circuit for measurement.

1. Look at the universal surface plate first.

2. Resistance gear, the red pen is plugged into the V socket, and the black watch pen is plugged in the COM socket. Measure both ends of a circuit or device. (It cannot be electrified, otherwise the multimeter will be burned out.) )

3. DC voltage level, the same resistance level measurement method.

4. AC voltage range, the same resistance level measurement method.

5. AC current gear, the red pen is inserted in the MA or 10A socket, and the black pen is inserted in the COM socket. String a multimeter into the circuit for measurement.

6. DC current gear, the red watch pen is plugged into the MA or 10A socket, and the black watch pen is plugged into the COM socket. String a multimeter into the circuit for measurement.

1. There are four jacks of the universal meter, namely: V hole, COM hole, MA hole, 10A hole or 20A hole.

Specific transfer switches: V- or DCV is the meaning of DC voltage block, V or ACV AC voltage block, A- or DCA DC current block, A or ACA is the meaning of AC current block, is the meaning of electric resistance, draw a diode symbol that is the diode file is also called the buzzer file, F represents the capacitance block, H represents the inductance block HFE represents the transistor current amplification coefficient test block.

2. Measure AC and DC voltage.

Rotate the button to V gear, insert the two watch pens into the corresponding jacks, insert the red watch pen into the "V Hz", and insert the black watch pen into the "COM" jack; Adjust the knob to the appropriate range; Connect the circuit, the red pen receives the measuring point, and the black pen connects to the negative pole.

3. Measure AC and DC current.

Rotate the button to the A gear, the black pen is inserted into the "com" jack, and the red pen is inserted into the appropriate jack according to the range of the current and the size of the measured current, and the two pen pens are connected in series to the circuit under test.

4. Measure the resistance.

Insert the red pen into the "V Hz", insert the black pen into the "com" jack, rotate the button to the gear, select the appropriate range, and the red and black pen will touch both ends of the resistance respectively, and the value can be read.

5. Measure the capacitance.

Rotate the button to -|Select the appropriate range, use one meter pen to contact the two poles of the capacitor, short circuit the two poles of the capacitor, and then touch the two meter pens to the two poles of the capacitor respectively to observe the reading.

There are 4 digital multimeter and pen jacks, how to choose the jack correctly? The old electrician taught you.

+ Insert red pen com * Insert black pen.

Place one transfer switch of the universal meter in the AC and DC voltage block, and the other transfer switch in the appropriate range of the AC voltage, and the two meter pens of the universal meter can be connected in parallel with the circuit or load under test.

One of the most critical steps in using a multimeter is to turn the dial and select the appropriate range. The dial of a multimeter is generally divided into two circles, the inner ring is marked with the exact range, and the outer ring is marked with the measurement gear. When turning the dial, you need to select the measuring gear first.

Here's how to use the universal meter correctly:1. According to the measured item, adjust the multimeter to the appropriate gear, such as gear, A gear, and V gear.

2. Roughly estimate the value of the measured item and adjust the range of the multimeter.

3. Connect the multimeter to both ends of the measured item, and the red pen and black pen are connected accurately, and the corresponding value will be displayed on the multimeter.