Kethvoz 2C23T Portable 3-in-1 Digital Oscilloscope User Manual

1. Product Overview

The Kethvoz 2C23T is a versatile 3-in-1 device combining a dual-channel digital oscilloscope, a true RMS digital multimeter, and a DDS signal generator. Designed for professionals in repair and research, this compact and portable instrument offers comprehensive testing capabilities for various electrical and electronic applications.

Key features include a 50MS/s sampling rate, 10MHz analog bandwidth, 32kb storage depth, and support for 3 trigger modes (auto, normal, single). The integrated multimeter provides 9999 counts for AC/DC voltage and current, resistance, capacitance, diode, and continuity tests. The DDS signal generator can produce seven types of waveforms up to 2MHz.

Image 1.1: The Kethvoz 2C23T displaying its three core functions: Oscilloscope, Multimeter, and Signal Generator.

2. Setup and Initial Use

2.1 Unpacking and Contents

Carefully unpack the device and verify all components are present. The standard package includes:

• 1 x Kethvoz 2C23T Digital Oscilloscope
• 1 x 10x Oscilloscope Probe
• 1 x Crocodile Clip Probe
• 1 x Multimeter Test Leads
• 1 x USB Type-C Charging Cable
• 1 x User Manual
• 1 x Packaging Box

Image 2.1: All items included in the Kethvoz 2C23T product package.

2.2 Device Layout

Familiarize yourself with the device's interfaces and controls:

• Oscilloscope Dual Channel Interface: BNC connectors for CH1 and CH2.
• Function Signal Generator Output Port: BNC connector for DDS output.
• Multimeter Interface: Input jacks for 10A, mA, COM, and VΩ.
• Charging Interface: USB Type-C port.
• Charging Indicator Light: Indicates charging status.
• Reset Button: For device reset.
• Control Buttons: AUTO, MOVE, CURSOR, TRIGGER, SAVE, MENU, and directional buttons for navigation.

Image 2.2: Front and side view of the Kethvoz 2C23T highlighting its various interfaces and controls.

2.3 Initial Charging

Before first use, fully charge the device using the provided USB Type-C cable and a compatible USB power adapter (not included). The charging indicator light will show the charging status.

3. Operating Instructions

3.1 Power On/Off

Press and hold the power button (usually labeled with a circle and vertical line) to turn the device on or off. The device features an automatic shutdown function to conserve battery life.

3.2 Oscilloscope Mode

The 2C23T functions as a dual-channel digital oscilloscope with a 10MHz analog bandwidth and 50MS/s real-time sampling rate. It supports 3 trigger modes: Auto, Normal, and Single.

1. Connecting Probes: Connect the oscilloscope probes to the CH1 and/or CH2 BNC interfaces. Ensure the probes are correctly calibrated (e.g., 1x or 10x attenuation).
2. Automatic Adjustment: Press the 'AUTO' button for automatic waveform adjustment, which optimizes vertical scale, horizontal scale, and trigger level for a stable display.
3. Manual Adjustments: Use the directional buttons and dedicated function buttons (MOVE, CURSOR, TRIGGER) to manually adjust parameters such as vertical sensitivity (V/div), time base (s/div), and trigger settings.
4. Waveform Saving and Export: Press the 'SAVE' button to capture and save waveform screenshots. These can be viewed directly on the device or exported to a computer via USB for further analysis.

Image 3.1: The dual-channel input and DDS output ports of the Kethvoz 2C23T.

Image 3.2: Waveform saving and data export functionality of the Kethvoz 2C23T.

3.3 Multimeter Mode

The integrated 9999-count true RMS multimeter supports a wide range of measurements:

1. Connecting Test Leads: Insert the multimeter test leads into the appropriate input jacks (10A, mA, COM, VΩ) based on the desired measurement.
2. Selecting Measurement Function: Use the mode selection button (often labeled 'PRM' or similar) to cycle through functions like AC/DC voltage, AC/DC current, resistance, capacitance, diode test, and continuity test.
3. Performing Measurements: Apply the test leads to the circuit or component under test. The measurement will be displayed on the screen.

3.4 Signal Generator Mode

The DDS function generator can output seven types of waveforms with adjustable frequency, amplitude, and duty cycle.

1. Connecting Output: Connect the crocodile clip probe or a BNC cable to the DDS output port.
2. Selecting Waveform Type: Navigate through the menu to select the desired waveform (Sine, Square, Triangle, Full Wave, Half Wave, Noise Wave, DC).
3. Adjusting Parameters: Use the control buttons to set the frequency (up to 2MHz with 1Hz increments), amplitude (0.1-3.3V), and duty cycle (0-100%) as required for your application.

4. Maintenance

4.1 Battery Charging and Life

The device is equipped with a 3000mAh rechargeable lithium battery, providing up to 6 hours of continuous operation and 8 hours of standby time. Recharge via the USB Type-C port. For optimal battery life, avoid fully discharging the battery frequently and store the device with a partial charge if not used for extended periods.

Image 4.1: Internal battery, charging port, and construction materials of the Kethvoz 2C23T.

4.2 Cleaning and Storage

Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures. The device features a durable ABS silicone jacket for protection against drops and impacts.

4.3 Safety Features

The 2C23T includes intelligent anti-burning and overload protection, featuring a built-in double ceramic fuse for secure power measurement. Always adhere to safety guidelines and maximum input ratings to prevent damage to the device and ensure user safety.

Image 4.2: The Kethvoz 2C23T's intelligent anti-burning and overload protection in action.

5. Troubleshooting

If you encounter issues with your Kethvoz 2C23T, please refer to the following common troubleshooting steps:

• Device not powering on: Ensure the battery is sufficiently charged. Connect the device to a power source using the USB Type-C cable and allow it to charge for at least 30 minutes before attempting to power it on again.
• Inaccurate readings: Verify that probes and test leads are correctly connected and not damaged. Ensure the correct measurement mode is selected for the task. For oscilloscope measurements, perform an 'AUTO' adjustment.
• No waveform display: Check probe connections. Ensure the trigger settings are appropriate for the signal being measured. Adjust vertical and horizontal scales.
• Signal generator not outputting: Confirm the output cable is securely connected. Verify the waveform type, frequency, amplitude, and duty cycle settings are correctly configured.
• Device unresponsive: If the device becomes unresponsive, press the reset button located on the side of the unit.

If problems persist after attempting these steps, please contact customer support.

6. Specifications

6.1 General Specifications

• Model Number: KE-T7-2C23T
• Dimensions (L x W x H): 16.7 x 8.9 x 3.5 cm (6.57 x 3.5 x 1.38 inches)
• Weight: 660 grams (1.46 lbs)
• Display: 2.8-inch Color LCD, 320x240 resolution
• Power Source: 3000mAh Rechargeable Lithium Battery
• Charging Port: USB Type-C
• Material: ABS with Silicone Jacket
• Safety Compliance: CE

6.2 Oscilloscope Parameters

Image 6.1: Detailed specifications for the oscilloscope function.

6.3 Multimeter Parameters

Image 6.2: Detailed specifications for the multimeter function.

6.4 Signal Generator Parameters

Image 6.3: Detailed specifications for the signal generator function.

7. Warranty and Support

7.1 Product Warranty

The Kethvoz 2C23T comes with a 365-day quality guarantee. Spare parts availability is ensured for 1 year from the date of purchase.

7.2 Customer Support

For technical assistance, troubleshooting, or warranty claims, please contact Kethvoz customer support through the retailer's platform or the official Kethvoz website. Please have your purchase details and model number (KE-T7-2C23T) ready when contacting support.