ຄູ່ມືຜູ້ໃຊ້ເຄື່ອງວັດໄຟຟ້າດິຈິຕອລ Cyelves VC830L

1. ບົດແນະນຳ

The Cyeelves Digital Multimeter VC830L is a compact, portable, and versatile instrument designed for accurate electrical measurements. It is suitable for both household and industrial applications, allowing users to measure AC/DC Voltage, AC/DC Current, Resistance, and perform Continuity and Diode tests. Its large backlit LCD display ensures clear readings even in low-light conditions, and the durable construction provides reliable performance.

2. ຂໍ້ມູນຄວາມປອດໄພ

Always observe basic safety precautions when using this multimeter to prevent personal injury or damage to the meter. Read and understand all instructions before use.

• ຢ່າໃຊ້ຄ່າປ້ອນຂໍ້ມູນສູງສຸດສຳລັບຊ່ວງໃດໆ.
• Ensure the test leads are properly connected and the function switch is set to the correct range before making any measurement.
• ໃຊ້ຄວາມລະມັດລະວັງທີ່ສຸດໃນເວລາທີ່ເຮັດວຽກກັບ voltages above 36V DC or 25V AC RMS, as these can pose a shock hazard.
• ໃຫ້ຖອດສາຍທົດສອບອອກຈາກວົງຈອນສະເໝີກ່ອນທີ່ຈະປ່ຽນຟັງຊັນ ຫຼື ຊ່ວງຄວາມຖີ່.
• ຢ່າໃຊ້ມິເຕີຖ້າມັນເບິ່ງຄືວ່າເສຍຫາຍ ຫຼື ຖ້າຊັ້ນກັນຄວາມຮ້ອນຂອງສາຍທົດສອບຖືກທຳລາຍ.
• ປ່ຽນແບັດເຕີລີ ເມື່ອຕົວຊີ້ບອກແບັດເຕີຣີຕ່ຳປະກົດຂຶ້ນ ເພື່ອຮັບປະກັນການອ່ານທີ່ຖືກຕ້ອງ.

3. ຜະລິດຕະພັນເກີນview

Familiarize yourself with the components of your Cyeelves Digital Multimeter VC830L.

Figure 3.1: Complete Multimeter Kit

This image displays the Cyeelves Digital Multimeter VC830L, its red and black test leads, and the included 9V battery, providing a full view ຂອງຜະລິດຕະພັນ ແລະ ອຸປະກອນເສີມຂອງມັນ.

ຮູບທີ 3.2: ການຈັດວາງແຜງດ້ານໜ້າ

This image highlights key features of the multimeter's front panel, including the LCD display, the LED button for backlight, the central rotary switch for function selection, and the 10A, COM, and VΩmA input jacks.

Figure 3.3: Physical Features and Dimensions

This image illustrates the compact dimensions of the multimeter, its non-slip grip for secure handling, and the integrated folding support stand for convenient hands-free operation.

3.1. ສ່ວນປະກອບ

• ຈໍ LCD: ສະແດງການອ່ານຄ່າວັດແທກ ແລະ ຕົວຊີ້ວັດຕ່າງໆ.
• ປຸ່ມ LED: ເປີດໃຊ້ງານໄຟ backlight ຂອງຈໍສະແດງຜົນ.
• ສະວິດ Rotary: ເລືອກຟັງຊັນການວັດແທກທີ່ຕ້ອງການ ແລະໄລຍະ.
• Input Jacks:
• Jack 10A: For measuring currents up to 10 Ampເອີ.
• COM Jack: ການປ້ອນຂໍ້ມູນທົ່ວໄປ (ລົບ) ສຳລັບການວັດແທກທັງໝົດ.
• ຊ່ອງສຽບ VΩmA: For measuring Voltage, Resistance, and milliampປະຈຸບັນ.
• ການທົດສອບນໍາພາ: Red (positive) and Black (negative) leads for connecting to circuits.
• Folding Support: Integrated stand on the back for upright positioning.

4. ຕັ້ງຄ່າ

4.1. ການຕິດຕັ້ງຫມໍ້ໄຟ

The Cyeelves Digital Multimeter VC830L requires a 9V battery (included). To install or replace the battery:

1. ກວດໃຫ້ແນ່ໃຈວ່າມັລຕິມິເຕີຖືກປິດໄວ້.
2. ຊອກຫາຝາປິດຊ່ອງໃສ່ຫມໍ້ໄຟຢູ່ດ້ານຫຼັງຂອງເຄື່ອງວັດແທກ.
3. ໃຊ້ screwdriver ເພື່ອຖອດ screw ຍຶດຝາປິດ.
4. Carefully remove the cover and insert the 9V battery, observing the correct polarity (+/-).
5. ປ່ຽນຝາປິດຫມໍ້ໄຟແລະຍຶດມັນດ້ວຍສະກູ.

4.2. ການເຊື່ອມຕໍ່ນໍາການທົດສອບ

ການເຊື່ອມຕໍ່ສາຍທົດສອບທີ່ເໝາະສົມແມ່ນສິ່ງຈຳເປັນສຳລັບການວັດແທກທີ່ຖືກຕ້ອງ ແລະ ປອດໄພ.

1. ໃສ່ຫົວການທົດສອບສີດໍາເຂົ້າໄປໃນ COM (ທົ່ວໄປ) ແຈັກ.
2. ສຳລັບການວັດແທກສ່ວນໃຫຍ່ (Voltage, Resistance, Diode, Continuity, small Current), insert the red test lead into the VΩmA jack.
3. For measuring high currents (up to 10A), insert the red test lead into the 10A jack. Always ensure the correct jack is used to prevent damage to the meter or circuit.

5. ຄໍາແນະນໍາການດໍາເນີນງານ

This section details how to use the Cyeelves Digital Multimeter VC830L for various electrical measurements.

5.1. ການວັດແທກແຮງດັນໄຟຟ້າ DCtagອີ (ວີ–)

ການ​ວັດ​ແທກ DC voltage, such as from batteries or DC power supplies:

1. ຕັ້ງສະວິດ rotary ເປັນ DC Vol ທີ່ຕ້ອງການtage (V–) range (e.g., 20V, 200V, 600V). Choose a range higher than the expected voltage.
2. ເຊື່ອມຕໍ່ຜູ້ ນຳ ທີ່ ດຳ ເນີນການທົດສອບ ດຳ COM jack ແລະ ສາຍທົດສອບສີແດງໄປຫາ VΩmA jack.
3. Connect the test leads in parallel across the component or circuit to be measured. The red lead connects to the positive side, and the black lead to the negative side.
4. ອ່ານ voltage value on the LCD display. If a negative sign appears, the polarity of the test leads is reversed.

ຮູບທີ 5.1.1: DC Voltage ການວັດແທກ

This image shows the multimeter actively measuring DC voltage from a battery, with the display showing a reading of 0.98V. The test leads are correctly connected to the battery terminals.

5.2. ການ​ວັດ​ແທກ AC Voltagອີ (ວີ∼)

ການ​ວັດ​ແທກ AC voltage, such as from wall outlets:

1. ຕັ້ງຄ່າສະຫຼັບ rotary ກັບ AC Vol ທີ່ຕ້ອງການtage (V∼) range (e.g., 200V, 600V). Choose a range higher than the expected voltage.
2. ເຊື່ອມຕໍ່ຜູ້ ນຳ ທີ່ ດຳ ເນີນການທົດສອບ ດຳ COM jack ແລະ ສາຍທົດສອບສີແດງໄປຫາ VΩmA jack.
3. Connect the test leads in parallel across the AC source.
4. ອ່ານ voltage ມູນຄ່າຢູ່ໃນຈໍສະແດງຜົນ LCD.

ຮູບທີ 5.2.1: AC Voltage ການວັດແທກ

This image demonstrates the multimeter measuring AC voltage from a standard wall outlet, displaying a reading of 128.1V. The test leads are inserted into the outlet's receptacles.

5.3. Measuring DC Current (A–)

To measure DC current, the multimeter must be connected in series with the circuit. Caution: Never connect the multimeter in parallel when measuring current, as this can damage the meter and the circuit.

1. ປິດໄຟກັບວົງຈອນ.
2. Set the rotary switch to the appropriate DC Current (A–) range (e.g., 200mA, 10A). If measuring current above 200mA, ensure the red test lead is in the 10A jack.
3. Break the circuit and connect the multimeter in series. The current will flow through the meter.
4. ນຳໃຊ້ພະລັງງານໃສ່ວົງຈອນ ແລະ ອ່ານຄ່າກະແສໄຟຟ້າຢູ່ໜ້າຈໍ LCD.

5.4. ການວັດແທກຄວາມຕ້ານທານ (Ω)

To measure resistance of a component:

1. Ensure the circuit is de-energized and the component is isolated from power.
2. ຕັ້ງສະວິດໝຸນໄປທີ່ລະດັບຄວາມຕ້ານທານ (Ω) ທີ່ຕ້ອງການ.
3. ເຊື່ອມຕໍ່ຜູ້ ນຳ ທີ່ ດຳ ເນີນການທົດສອບ ດຳ COM jack ແລະ ສາຍທົດສອບສີແດງໄປຫາ VΩmA jack.
4. ເຊື່ອມຕໍ່ສາຍທົດສອບຜ່ານອົງປະກອບທີ່ທ່ານຕ້ອງການວັດແທກຄວາມຕ້ານທານ.
5. ອ່ານຄ່າຄວາມຕ້ານທານໃນຈໍສະແດງຜົນ LCD.

5.5. ການທົດສອບຄວາມຕໍ່ເນື່ອງ

The continuity test checks for an unbroken path in a circuit and typically provides an audible buzzer sound if continuity exists.

1. ໃຫ້ແນ່ໃຈວ່າວົງຈອນຖືກ de-energized.
2. Set the rotary switch to the Continuity (☊) position.
3. ເຊື່ອມຕໍ່ຜູ້ ນຳ ທີ່ ດຳ ເນີນການທົດສອບ ດຳ COM jack ແລະ ສາຍທົດສອບສີແດງໄປຫາ VΩmA jack.
4. Touch the test leads across the points you want to check for continuity.
5. ຖ້າມີຄວາມຕໍ່ເນື່ອງ (ຄວາມຕ້ານທານຕໍ່າ), ແມັດຈະສົ່ງສຽງດັງ.

5.6. ການທົດສອບ Diode

ການທົດສອບ diode ວັດແທກການສົ່ງຕໍ່ voltage ການຫຼຸດລົງຂອງ diode ໄດ້.

1. ໃຫ້ແນ່ໃຈວ່າໄດໂອດຖືກແຍກອອກຈາກວົງຈອນ.
2. Set the rotary switch to the Diode (→|–) position.
3. ເຊື່ອມຕໍ່ຜູ້ ນຳ ທີ່ ດຳ ເນີນການທົດສອບ ດຳ COM jack ແລະ ສາຍທົດສອບສີແດງໄປຫາ VΩmA jack.
4. ເຊື່ອມຕໍ່ສາຍທົດສອບສີແດງເຂົ້າກັບຂົ້ວບວກຂອງໄດໂອດ ແລະ ສາຍທົດສອບສີດຳເຂົ້າກັບຂົ້ວລົບ.
5. ອ່ານຕໍ່ voltage drop on the LCD display. Reverse the leads to check for reverse bias (should show OL or infinite resistance).

5.7. hFE Measurement (Transistor Test)

The hFE function allows for testing the DC current gain of NPN and PNP transistors.

1. ຕັ້ງຄ່າຫມຸນຫມຸນໄປ hFE ຕໍາ​ແຫນ່ງ​.
2. Identify the type (NPN or PNP) and pin configuration (Emitter, Base, Collector) of the transistor.
3. Insert the transistor leads into the corresponding sockets on the multimeter's hFE test socket.
4. Read the hFE value on the LCD display.

5.8. ຟັງຊັນການຖືຂໍ້ມູນ

ກົດ ຖື button (often integrated with the LED button or a separate button) to freeze the current reading on the display. Press it again to release the hold and resume live measurements.

5.9. ການເຮັດວຽກຂອງໄຟພື້ນຫຼັງ

ກົດ LED button to turn on the display backlight for improved visibility in dim environments. Press it again to turn off the backlight.

Figure 5.9.1: Backlight in Use

This image demonstrates the multimeter's LCD display with its backlight activated, making the readings clearly visible even in a poorly lit environment, enhancing usability.

6. ບໍາລຸງຮັກສາ

ການບຳລຸງຮັກສາທີ່ເໝາະສົມຮັບປະກັນອາຍຸການໃຊ້ງານ ແລະ ຄວາມແມ່ນຍຳຂອງເຄື່ອງວັດໄຟຟ້າຂອງທ່ານ.

• ທໍາຄວາມສະອາດ: ເຊັດແມັດດ້ວຍການໂຄສະນາamp ຜ້າແລະເຄື່ອງຊັກຜ້າອ່ອນ mild. ຢ່າໃຊ້ສານຂັດຫຼືສານລະລາຍ.
• ການປ່ຽນແບັດເຕີຣີ: Replace the 9V battery as described in Section 4.1 when the low battery indicator appears on the display.
• ການເກັບຮັກສາ: If the meter is not used for a long period, remove the battery to prevent leakage. Store in a cool, dry place away from direct sunlight.
• ຟິວ: The multimeter has built-in fuses for overload protection. If the current measurement function stops working, the fuse may need replacement. This should only be performed by qualified personnel.

7. ການແກ້ໄຂບັນຫາ

ຖ້າທ່ານພົບບັນຫາກັບເຄື່ອງວັດມັລຕິມີເຕີຂອງທ່ານ, ໃຫ້ອ້າງອີງເຖິງບັນຫາ ແລະ ວິທີແກ້ໄຂທົ່ວໄປຕໍ່ໄປນີ້:

8. ຂໍ້ມູນຈໍາເພາະ

9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ

Cyeelves is committed to providing quality products and customer satisfaction. If you have any questions regarding the operation, maintenance, or performance of your Digital Multimeter VC830L, please contact Cyeelves customer support. We aim to respond to inquiries within 24 hours and offer replacements within 30 days for product-related issues.

For support, please refer to the contact information provided with your product packaging or visit the official Cyeelves brand store online.