KKmoon KKM828
KKmoon KKM828 2-in-1 Digital Multimeter with Oscilloscope User Manual
Model: KKM828
1. Bubuka
The KKmoon KKM828 is a versatile 2-in-1 device combining the functionalities of a digital multimeter and an oscilloscope. Designed for efficiency and accuracy, it features a 2.4-inch color display, a 1MHz bandwidth for AC voltage, and a 2.5Msps real-time sampling rate. This manual provides essential information for safe and effective operation of your KKM828 device.
2. Émbaran Kasalametan
Please read and understand all safety instructions before using the device. Failure to follow these instructions may result in electric shock, fire, or damage to the device or other equipment.
- Always ensure the device is in good working condition and free from damage before use.
- Ulah nerapkeun voltage or current that exceeds the maximum limits specified in the technical specifications.
- Paké caution nalika gawé bareng voltages above 24V, as they pose a shock hazard. The device will emit an audible warning if the input voltage ngaleuwihan 24V.
- Pastikeun fungsi sareng rentang anu leres dipilih sateuacan ngukur.
- Ganti batré gancang-gancang nalika indikator batré lemah nembongan pikeun mastikeun bacaan akurat.
- The device is equipped with double fuses (500mA/250V and 10A/250V) for protection. Do not bypass or use incorrect fuse types.
- Do not operate the device in wet environments or explosive atmospheres.
- Refer to the "Maintenance" section for proper cleaning and storage procedures.
3. Produk Langkungview
The KKmoon KKM828 integrates a digital multimeter and an oscilloscope into a compact, handheld unit. Key components and features are detailed below.
3.1 Fitur konci
- Fungsi 2-in-1: Combines a digital multimeter and an oscilloscope.
- tampilan: 2.4-inch 320x240 LCM color screen for clear readings and waveform display.
- Oscilloscope Performance: 1MHz ACV bandwidth, 2.5Msps real-time samplaju ling.
- Fungsi Multimeter: Ukur AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, diode, and continuity.
- Panyimpenan Data: Stores up to 100 sets of data and 10 waveforms.
- Panganteur pamaké: Silicone buttons and a pressure-sensitive dial for precise function selection.
- Ergonomis: Integrated back bracket for a 60° viewsudut ing.
- Kasalametan: Double fuse protection (500mA/250V, 10A/250V) and input voltage peringatan.
3.2 Komponén Alat
Refer to the image below for an overview of the device's main components.

Figure 1: KKM828 Product Details. This image highlights the device's HD color screen (01), the function dial for accurate gear changes (02), and the back bracket (03) for easy viewing.
- Layar HD: 2.4-inch color screen for clear display of measurements and waveforms.
- Dial fungsi: Rotary switch for selecting measurement functions (voltage, current, resistance, etc.) and oscilloscope mode.
- Buttons (F1-F4, R, S): Used for navigating menus, selecting ranges, holding data, and other specific functions.
- Input Jacks: Terminals for connecting test leads for various measurements (e.g., VΩHz, mA, 10A, COM).
- Bracket tukang: Foldable stand for propping up the device at a 60° angle for convenient viewing.
4. Setélan
4.1 Pamasangan batré
The KKM828 requires three AA batteries for operation. Ensure the device is powered off before installing or replacing batteries.
- Teang tempat panutup kompartemen batre dina tonggong alat.
- Open the battery compartment cover by sliding or unscrewing it (if applicable).
- Insert three AA batteries, observing the correct polarity (+ and -) as indicated inside the compartment.
- Tutup panutup kompartemen batré aman.
4.2 Powering on / Pareum
To power on the device, rotate the function dial from the "OFF" position to any desired measurement function. To power off, rotate the dial back to the "OFF" position.
5. Parentah Operasi
5.1 Fungsi Multimeter
The KKM828 offers a comprehensive range of multimeter measurement capabilities. Always connect test leads correctly to the appropriate input jacks (e.g., COM, VΩHz, mA, 10A) for the selected function.
- AC / DC Voltage Pangukuran: Rotate the dial to the 'V~' or 'V=' position. Connect test leads in parallel with the circuit.
- Pangukuran Arus AC/DC: Rotate the dial to the 'mA~', 'mA=', '10A~', or '10A=' position. Connect test leads in series with the circuit.
- Ukur résistansi: Rotate the dial to the 'Ω' position. Ensure the circuit is de-energized before measuring resistance.
- Pangukuran Kapasitansi: Rotate the dial to the 'mF' position. Discharge capacitors before measurement.
- Pangukuran Frékuénsi sareng Siklus Tugas: Rotate the dial to the 'Hz%' position.
- Tés Diode: Rotate the dial to the 'Diode' position. Connect leads across the diode to check forward voltage teundeun.
- Uji kontinuitas: Rotate the dial to the 'Continuity' position. The device will beep if resistance is below approximately 50Ω.

Figure 2: Multimeter Measurement Examples. This image illustrates the display during Frequency, Duty Cycle, Diode Test, and Continuity measurements, demonstrating the device's various multimeter functions.
5.2 Fungsi Osiloskop
The KKM828 features a convenient one-button oscilloscope for waveform analysis.
- Rotate the function dial to the 'Graphical' (oscilloscope) mode.
- Connect the test leads to the circuit where you wish to observe the waveform.
- The device will automatically display the waveform. Use the secondary display at the bottom to view parameters such as Peak-to-Peak voltage (VP-P), average value, RMS value, frequency, time base, and amplituit.
- Measurement modes include 'Normal' and 'Automatic'. The device can quickly and accurately measure and display waveforms.

Figure 3: Oscilloscope Waveform Display. Gambar ieu nunjukkeun mantanamples of different electrical waveforms (sine, square, pulse, complex) as displayed on the KKM828's oscilloscope screen, along with key measurement parameters.
5.3 Panyimpenan sareng Pangélingan Data
The KKM828 can store up to 100 sets of measurement data and 10 waveforms for later review.
- Specific instructions for saving and recalling data are typically accessed via the function buttons (e.g., 'S' for Save, 'R' for Recall) in relevant measurement modes. Refer to the on-screen prompts for detailed operation.
- The device allows for simultaneous display of historical records and real-time data for easy comparison and analysis.
6. Pangropéa
6.1 beberesih
Pikeun ngabersihan alat, usap casing jeung iklanamp cloth and a mild detergent. Do not use abrasive cleaners or solvents. Ensure the device is powered off and disconnected from any circuits before cleaning. Do not allow moisture to enter the device.
6.2 Ngagantian batré
When the low battery indicator appears on the display, replace the three AA batteries as described in the "Battery Installation" section (4.1). Always use fresh batteries of the same type.
6.3 Panyimpenan
When not in use for extended periods, remove the batteries to prevent leakage. Store the device in a cool, dry place within the specified storage environment: -10°C to 60°C, with relative humidity less than 90% RH.
7. Cara ngungkulan
This section addresses common issues you might encounter with your KKM828 device.
| Masalah | Mungkin Cukang lantaranana | Solusi |
|---|---|---|
| Alat teu hurung. | Batré paéh atawa salah dipasang. | Pariksa polaritasna batré sareng ganti ku batré AA seger. |
| Teu aya bacaan atanapi "OL" (Overload) ditampilkeun. | Incorrect range selected, open circuit, or input exceeds maximum limit. | Select appropriate range, check test lead connections, ensure circuit is closed. Verify input does not exceed specifications. |
| Pangukuran anu teu akurat. | Low battery, incorrect connection, or environmental factors. | Replace batteries, re-check test lead connections, ensure operating environment is within specified range. |
| Oscilloscope waveform is unstable or absent. | Poor connection, signal too weak/strong, or incorrect mode. | Ensure secure test lead connection. Adjust amplitude or time base if available (though KKM828 is mostly auto-ranging). Verify signal source. |
| Device beeps continuously. | Masukan voltage exceeds 24V (safety warning). | Immediately disconnect the device from the circuit and verify the voltage level. Do not proceed if voltage luhur teuing. |
8. Spésifikasi
The following table details the technical specifications of the KKmoon KKM828.
| Parameter | Nilai |
|---|---|
| Modél | KKM828 |
| tampilan | 2.4-inch 320 x 240 LCM Color Screen |
| Résistansi Input | 10 MΩ |
| Jenis Batré | 3 x batré AA (teu kaasup) |
| Konsumsi Daya | Kira-kira. 80 mA |
| Operating Time (low brightness) | Kira-kira. 5 jam |
| Panyimpenan Data | 100 data sets / 10 waveforms |
| Lingkungan Operasi | 0 ~ 40 °C, <75% RH |
| Lingkungan Panyimpenan | -10 ~ 60 °C, <90% RH |
| Bandwidth (ACV) | 1 MHz |
| Bandwidth (ACA) | 5 KHz |
| Max. Real-time Sampling Laju | 2.5 ms |
| Multimeter Range (DC Voltage) | 400mV / 4V / 40V / 400V / 1000V (Accuracy: 0.75% rdg + 10dgt) |
| Multimeter Range (AC Voltage) | 400mV / 4V / 40V / 400V / 750V (Accuracy: 1.0% rdg + 10dgt) |
| Multimeter Range (DC Current) | 40mA / 400mA / 4A / 10A (Accuracy: 1.2% rdg + 10dgt) |
| Multimeter Range (AC Current) | 40mA / 400mA / 4A / 10A (Accuracy: 1.5% rdg + 10dgt) |
| Multimeter Range (Resistance) | 400.0 Ω ~ 40.00 MΩ (Accuracy: 1.0% rdg + 5dgt) |
| Multimeter Range (Capacitance) | 0.1nF ~ 100, 10.00mF (Accuracy: 2.0% rdg + 10dgt) |
| Multimeter Range (Frequency) | 5Hz ~ 10MHz (Accuracy: 1.0% rdg + 5dgt) |
| Multimeter Range (Duty Cycle) | 0.1 % ~ 99.9 % (Accuracy: 1.0% rdg + 5dgt) |
| Diode Tés | Voltage approx. 5V, Test current approx. 1.5mA |
| Uji Kontinuitas | Buzzer sounds if resistance < 50Ω |
| Spésifikasi sekering | 500mA / 250V, 10A / 250V |
| Diménsi | 160 x 83 x 32 mm |
| Beurat | 195 g |
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