1. Sarrera
The OWON CMS101 is a versatile 3-in-1 AC/DC clamp meter designed for comprehensive electrical measurements. It integrates the functionalities of a clamp meter, an oscilloscope, and a data recorder into a single, portable device. With 20,000 counts True RMS, it provides accurate and reliable measurements for a wide range of applications. Its Bluetooth connectivity allows for remote control, data recording, and analysis via a smartphone application.
Ezaugarri nagusiak:
- Multifunctional 3-in-1 Tool: AC/DC cl konbinatzen dituamp meter, oscilloscope, and recorder functions.
- Zehaztasun handia: 20,000 counts True RMS for precise measurements.
- Simultaneous Waveform Analysis: Oscilloscope function measures current and voltage waveforms concurrently.
- Bluetooth Data Recording: Connects to smartphones (Android/iOS) via the i-meter app for recording, viewing, comparing, analyzing, and saving measurement data.
- Remote Control & Safety Alerts: Remote operation and customizable alarm thresholds for safety.
- Erabiltzaileentzako diseinua: 2.8-inch IPS LCD with wide viewing angle, dual-theme display, and 38mm narrow-edge jaw for tight spaces.
- Durable & Convenient: Powered by a 18650 lithium battery for long-term use, tactile button operation, and Non-Contact Voltage (NCV) detekzioa.

Figure 1: The OWON CMS101 highlighting its three core functions: AC/DC Clamp Meter, Recorder, and Oscilloscope.
2. Segurtasun informazioa
Please read all safety information carefully before using the OWON CMS101. Failure to follow these instructions may result in electric shock, fire, or personal injury.
- Always inspect the device and test leads for damage before use. Do not use if damaged.
- Ziurtatu bateriaren konpartimentua ondo itxita dagoela erabili aurretik.
- Ez aplikatu voltage or current that exceeds the maximum rated values specified in the technical specifications.
- Kontuz ibili voltag30V AC RMS, 42V peak edo 60V DC-tik gorakoak. Bolumen hauektagshock arriskua dakar.
- Always disconnect power to the circuit under test before making connections or breaking connections.
- Ez erabili gailua leherketa-arriskuetan edo gas edo hauts sukoien aurrean.
- Ensure your hands are dry and wear appropriate personal protective equipment (PPE) when performing electrical measurements.
- Ez saiatu gailua konpontzen edo aldatzen. Mantendu mantentze-lan guztiak langile kualifikatuen esku.
- Jarraitu tokiko eta nazioko segurtasun-kode guztiak.
- Always verify readings with a known good source or secondary method, especially for safety-critical applications.
3. Produktua amaitu daview
The OWON CMS101 is designed for ease of use and durability. Familiarize yourself with its components and controls.

Figure 2: Product structure diagram with key components and button functions labeled.
Funtsezko osagaiak:
- Clamp Baraila: For non-contact AC/DC current measurement. Features a 38mm narrow-edge design for accessibility.
- LCD IPS Display: 2.8-inch screen with wide viewing angle and dual-theme display for clear readability in various lighting conditions.
- Funtzio botoiak (F1-F4): Context-sensitive buttons for menu navigation and mode-specific operations.
- Nabigazio botoiak: Up/Down/Left/Right for menu and setting adjustments.
- Pizteko botoia: Short press to power on, long press to power off. Short press after power-on to switch between Oscilloscope and Multimeter modes.
- DMM/OSC Switch: Dedicated button to toggle between Digital Multimeter and Oscilloscope modes.
- Sarrerako terminalak: Bolumenaren proba-kableak konektatzekotage, resistance, continuity, diode, and other measurements.
- NCV sentsorea: Kontaktu gabeko boltage detekzio eremua.
- Bateriaren konpartimendua: Houses the 18650 lithium battery.

Figure 3: The 2.8-inch IPS LCD display, demonstrating clear value and waveform visualization with dual theme options.

Figure 4: Details of the OWON CMS101, including the 18650 lithium battery power, full silicone button membrane, and durable ABS rubber-coated design.
4. Konfigurazioa
4.1 Bateriaren instalazioa
- Bilatu bateriaren konpartimentuaren estalkia gailuaren atzealdean.
- Open the cover and insert the provided 18650 lithium battery, ensuring correct polarity.
- Itxi bateriaren konpartimenduaren estalkia ondo.
4.2 Piztu/Itzaltzea
- Pizteko: Sakatu BOTEREA botoia labur.
- Itzaltzeko: Eduki sakatuta BOTEREA botoia pantaila itzali arte.
4.3 Bluetooth Connection and App Installation
- Download the "i-meter" application from your smartphone's app store (available for Android and iOS).
- Ensure Bluetooth is enabled on your smartphone and on the CMS101 device.
- Open the i-meter app and follow the on-screen instructions to pair with your CMS101 device.
- Once connected, you can remotely control the device and access data recording features.
5. Funtzionamendua
5.1 Switching Modes (Multimeter / Oscilloscope)
After powering on, briefly press the BOTEREA botoia Multimetro Digitalaren (DMM) moduaren eta Osziloskopioaren (OSC) moduaren artean txandakatzeko.
5.2 clamp Meter (AC/DC Current Measurement)
Clamp meter function allows for non-contact measurement of AC and DC current up to 1000A.
- Ensure the device is in DMM mode.
- Press the jaw release trigger to open the clamp masailezurra.
- Jarri clamp jaw around a single conductor (not a bundle of wires) through which the current flows. Ensure the jaw is fully closed.
- Irakurri LCD pantailan bistaratzen den uneko balioa.
- Use the function buttons (F1-F4) to select AC or DC current measurement if not auto-ranging.

Figure 5: The OWON CMS101 in use, measuring current by clamping around a conductor.
5.3 Osziloskopioaren funtzioa
In Oscilloscope mode, the CMS101 can display and analyze current and voltage waveforms simultaneously.
- Switch the device to OSC mode.
- Connect the test leads to the appropriate input terminals for voltage measurement, or use the clamp for current waveform.
- The display will show the waveform. Use the navigation buttons and function buttons (F1-F4) to adjust settings such as time base, voltage range, and trigger.
- The oscilloscope provides measurement values including maximum, minimum, peak-to-peak, and average values.

Figure 6: The device capable of measuring current and voltage waveforms for comprehensive analysis.
5.4 Recorder Function (Data Logging)
The recorder function allows you to log measurement data over time and analyze it using the i-meter smartphone app.
- Ensure the CMS101 is connected to your smartphone via Bluetooth.
- Open the i-meter app and navigate to the recording section.
- Start the recording function. The app will automatically log measured values and display trends graphically.
- Recorded data (in CSV format) can be shared and analyzed on a computer.

Figure 7: The i-meter app displaying recorded data in graphical and tabular formats, with options for file kudeaketa.
5.5 Other Measurement Functions
The CMS101 supports various other measurement capabilities:
- liburukiatage (V): AC eta DC boltage neurketa.
- Erresistentzia (Ω): Erresistentzia elektrikoa neurtzen du.
- Jarraipena: Audible alert for continuous circuits.
- Diodo proba: Checks diode functionality.
- Maiztasuna (Hz): Measures signal frequency.
- Kontaktu gabeko boltage (NCV): AC vol. detektatzen dutage kontaktu fisikorik gabe.
- Datuen atxikipena (HOLD): Uneko irakurketa pantailan izozten du.
- Auto Ranging (AUTO): Neurketa-tarte egokia automatikoki hautatzen du.
- Itzaltze automatikoa (APO): Bateriaren iraupena aurrezten du automatikoki itzaliz, jarduerarik gabe egon ondoren.
- MAX / MIN: Neurketa-saio batean gehienezko eta gutxieneko balioak erregistratzen ditu.
- Egiazko RMS: Uhin-forma ez-sinusoidalen irakurketa zehatzak ematen ditu.

Figure 8: Icons representing the various measurement functions available on the OWON CMS101.
6. Mantentzea
6.1 Garbiketa
To clean the device, wipe the case with a damp oihal eta detergente leun batekin. Ez erabili urratzailerik edo disolbatzailerik. Ziurtatu gailua itzalita eta zirkuituetatik deskonektatuta dagoela garbitu aurretik.
6.2 Bateria zaintzea
- Recharge the 18650 lithium battery when the low battery indicator appears.
- Gailua denbora luzez erabiliko ez bada, kendu bateria isuriak saihesteko.
- Bota bateriak tokiko araudiaren arabera.
6.3 Biltegiratzea
Gorde gailua leku fresko eta lehor batean, eguzki-argitik eta muturreko tenperaturetatik babestuta. Mantendu haurren eskura ez dagoen leku batean.
7. Arazoak
If you encounter issues with your OWON CMS101, refer to the following common problems and solutions:
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Gailua ez da pizten. | Low or depleted battery. Incorrect battery installation. | Charge or replace the 18650 lithium battery. Ensure battery is inserted with correct polarity. |
| Inaccurate readings (e.g., non-zero reading with no input, or 0V with mains voltageta). | Sensor offset or calibration issue. Environmental interference. Device malfunction. | Perform a zero-adjustment if available in the menu. Ensure no strong magnetic fields are nearby. If problem persists, contact customer support for calibration or service. |
| Bluetooth konexioak huts egin du. | Bluetooth not enabled on device/phone. App not installed or outdated. Device too far from phone. | Ensure Bluetooth is active on both devices. Reinstall or update the i-meter app. Keep devices within Bluetooth range. |
| Pantaila ilun dago edo irakurgaitza da. | Low battery. Backlight setting. | Charge the battery. Adjust backlight brightness via menu settings. |
| No reading when clamping. | Clamp jaw not fully closed. Clamping around multiple conductors. Incorrect mode selected. | Ensure jaw is fully closed around a single conductor. Verify correct AC/DC current mode is selected. |
8. Zehaztapenak
Below are the technical specifications for the OWON CMS101:
| Ezaugarri | Xehetasuna |
|---|---|
| Modelo zenbakia | OWON-CMS101 |
| Produktuaren neurriak | 24.8 x 9.4 x 3.8 cm |
| Pisua | 820 g |
| Energia iturria | 18650 litiozko bateria |
| Bistaratzea | 2.8 hazbeteko IPS LCD |
| Baraila irekitzea | 38 mm |
| Kontuak | 20,000 counts True RMS |
| Konektibitatea | Bluetooth (Android/iOS app) |
| Ziurtagiriak | CE Certified, RoHS Compliant |
| Funtzioak | AC / DC Clamp Meter, Oscilloscope, Data Recorder, NCV, True RMS, Max/Min, Hold, Auto Ranging, Auto Power Off, Frequency, Resistance, Continuity, Diode Test |
9. Bermea eta laguntza
9.1 Bermearen informazioa
OWON products are covered by a limited warranty against defects in materials and workmanship. The specific warranty period may vary by region and product. Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, refer to the official OWON webwebgunean edo jarri harremanetan bezeroarentzako laguntzarekin.
9.2 Bezeroarentzako laguntza
If you have any questions, require technical assistance, or need to report a problem with your OWON CMS101, please contact OWON customer support. You can typically find contact information on the official OWON webgunea edo zure dendariaren bidez.
- Lineako laguntza: Visit the official OWON website for FAQs, software downloads, and support resources.
- Posta elektronikoko laguntza: Refer to your product packaging or the OWON webwebgunean laguntza-helbide elektroniko egokia lortzeko.
- Telefono-laguntza: Contact numbers may be available on the OWON webzure eskualderako gunea.
When contacting support, please have your product model (CMS101) and purchase details ready.