1. Pengenalan dan Maklumat Keselamatan
This manual provides essential instructions for the safe and effective operation, maintenance, and troubleshooting of your VOLTCRAFT VC851 Digital Multimeter. Please read this manual thoroughly before using the device and keep it for future reference.
1.1 Amaran Keselamatan Am
Always adhere to the following safety precautions to prevent electric shock, injury, or damage to the meter or equipment under test:
- The VOLTCRAFT VC851 is rated for CAT III 1000 V and CAT IV 600 V. Ensure you understand these categories and their implications for safe measurement.
- Jangan gunakan lebih daripada vol yang dinilaitage, seperti yang ditanda pada meter, antara terminal atau antara mana-mana terminal dan tanah.
- Berhati-hati apabila bekerja dengan voltagmelebihi 30 V AC RMS, puncak 42 V atau 60 V DC. Voltan initagia menimbulkan bahaya kejutan.
- Before each use, inspect the test leads for damaged insulation or exposed metal. Replace damaged leads immediately.
- Pastikan suis putar berada di kedudukan yang betul untuk ukuran yang dikehendaki sebelum menyambungkan wayar ujian ke litar.
- Never use the meter if it appears damaged or if the case is open.
- Jangan kendalikan meter dalam persekitaran gas meletup, wap atau habuk.
- Sentiasa putuskan sambungan petunjuk ujian daripada litar sebelum menukar fungsi atau julat.
- Gantikan bateri sebaik sahaja penunjuk bateri lemah muncul untuk memastikan bacaan yang tepat.
2. Produk Lebihview
The VOLTCRAFT VC851 is a versatile digital multimeter designed for precise electrical measurements. It features a 6000-count display, auto-ranging capabilities, and integrated flashlight and screen illumination for use in various environments.

Rajah 2.1: Depan view of the VOLTCRAFT VC851 Digital Multimeter with connected test leads. This image shows the display, rotary dial, function buttons, and input jacks.

Rajah 2.2: Belakang view of the VOLTCRAFT VC851 Digital Multimeter, illustrating the integrated test lead storage and kickstand.
3. Persediaan dan Operasi Awal
3.1 Pemasangan Bateri
The VOLTCRAFT VC851 is powered by batteries. To install or replace batteries:
- Pastikan multimeter dimatikan dan putuskan sambungan semua petunjuk ujian.
- Cari penutup petak bateri di bahagian belakang peranti.
- Gunakan pemutar skru untuk membuka petak bateri.
- Insert new batteries, observing the correct polarity (+/-).
- Tutup penutup petak bateri dengan selamat.

Rajah 3.1: Belakang view of the multimeter, highlighting the battery compartment for installation or replacement.
3.2 Menghubungkan Petunjuk Ujian
Untuk persediaan bagi pengukuran:
- Masukkan petunjuk ujian hitam ke dalam bicu input "COM" (biasa).
- Insert the red test lead into the appropriate input jack for your measurement:
- "VΩHz" for voltage, resistance, frequency, capacitance, and diode tests.
- "mAµA" for milliampere dan mikroampsebelum pengukuran semasa.
- "10A" for high current (up to 10A) measurements.

Figure 3.2: The multimeter with test leads properly connected to the input jacks, ready for use.
4. Arahan Operasi
The VOLTCRAFT VC851 features a rotary dial for selecting primary measurement functions and buttons for secondary functions and settings.
4.1 Pemilihan Fungsi
Turn the central rotary dial to select the desired measurement function (e.g., V for voltage, A for current, Ω for resistance). The meter will automatically select the appropriate range (Auto-Range) for most measurements.
4.2 Mod Pengukuran
- Voltage (V~ / V-): Ukur volum AC atau DCtage. Select the appropriate voltage range using the rotary dial.
- Semasa (A~ / A-): Measure AC or DC current. Ensure test leads are connected to the correct current input jacks (mAµA or 10A) and the rotary dial is set to the corresponding current range.
- Rintangan (Ω): Measure resistance in ohms.
- Kesinambungan: Test for continuity with an audible buzzer.
- Ujian Diod: Test diodes for proper function.
- Kapasitansi (F): Measure capacitance in farads.
- Kekerapan (Hz): Measure frequency in hertz.
- Suhu (°C/°F): Measure temperature using the included temperature probe.
4.3 Ciri Istimewa
- Lampu suluh: Press the dedicated flashlight button to illuminate the work area.
- Pencahayaan Skrin: The display features backlighting for improved visibility in low-light conditions.
- Pegangan Data: Tekan butang "HOLD" untuk membekukan bacaan semasa pada paparan.
- Min/Maks: Use the "MIN/MAX" function to record the minimum and maximum values during a measurement session.

Figure 4.1: The multimeter in use, demonstrating its application in an electrical panel for voltage or current checks.

Figure 4.2: The multimeter being used for precise measurements on a circuit board, showcasing its versatility for electronics work.
5. Penyelenggaraan
Proper maintenance ensures the longevity and accuracy of your VOLTCRAFT VC851 Digital Multimeter.
5.1 Pembersihan
- Always turn off the meter and disconnect test leads before cleaning.
- Lap kes dengan iklanamp kain dan bahan pencuci ringan. Jangan gunakan pelelas atau pelarut.
- Ensure no moisture enters the case.
5.2 Penggantian Bateri
Refer to Section 3.1 for detailed instructions on battery replacement. Replace batteries promptly when the low battery indicator appears to maintain measurement accuracy.
5.3 Penggantian Fius
If the current measurement function stops working, the fuse may need replacement. Fuses are critical safety components. Always replace with a fuse of the specified type and rating.
- Pastikan multimeter dimatikan dan putuskan sambungan semua petunjuk ujian.
- Open the battery compartment cover (refer to Section 3.1).
- Keluarkan fius lama dengan berhati-hati.
- Install a new fuse of the exact same type and rating. Refer to the specifications section for fuse details.
- Tutup penutup petak bateri dengan selamat.
6. Penyelesaian masalah
If you encounter issues with your VOLTCRAFT VC851, consult the following table for common problems and solutions.
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Tiada paparan atau paparan samar | Bateri rendah atau mati | Gantikan bateri (lihat Bahagian 3.1). |
| Bacaan yang salah | Incorrect function/range selected; Damaged test leads; External interference | Verify rotary switch position; Inspect and replace test leads if damaged; Move away from strong electromagnetic fields. |
| Pengukuran arus tidak berfungsi | Blown fuse; Incorrect lead connection | Replace fuse (see Section 5.3); Ensure leads are in the correct current input jacks. |
| "OL" (Lebihan) dipaparkan | Pengukuran melebihi julat yang dipilih atau kapasiti maksimum meter | Switch to a higher range if available, or ensure the measured value is within the meter's specifications. |
7. Spesifikasi Teknikal
| Ciri | Spesifikasi |
|---|---|
| Nombor Model | VC-12884325 |
| Penilaian Keselamatan | CAT III 1000V, CAT IV 600V |
| Kiraan Paparan | 6000 kiraan |
| Bermula | Julat Auto |
| Fungsi | AC / DC Voltage, AC/DC Current, Resistance, Continuity, Diode, Capacitance, Frequency, Temperature |
| Ciri Khas | Flashlight, Screen Illumination, Data Hold, Min/Max |
| Dimensi (L x W x H) | 4.3 x 9.1 x 20 cm (1.7 x 3.6 x 7.9 inci) |
| Berat badan | 430 Gram (0.95 lbs) |
| Sumber Kuasa | Dikuasakan bateri |
| Ketersediaan Alat Ganti | 1 Tahun |
8. Waranti dan Sokongan
VOLTCRAFT products are designed for reliability and performance. This product comes with a standard warranty. For specific warranty terms and conditions, please refer to the documentation included with your purchase or visit the official VOLTCRAFT webtapak.
Spare parts are available for 1 year from the date of purchase. For technical support, service, or inquiries regarding spare parts, please contact VOLTCRAFT customer service through their official channels.
Sila simpan bukti pembelian anda untuk tuntutan waranti.