OWON HDS242S User Manual

1. Introduction

The OWON HDS242S is a highly integrated, multi-functional handheld device combining a digital oscilloscope, a waveform generator, and a multimeter. Designed for portability and ease of use, it is an ideal tool for field maintenance, rapid on-site measurements, and various electronic testing applications.

Figure 1.1: The OWON HDS242S handheld device shown with its complete set of accessories, including probes, cables, power adapter, and carrying case.

Figure 1.2: The HDS242S connected with multimeter probes, illustrating its readiness for electrical measurements. Various power plug types (EU, UK, US) are also displayed, indicating global compatibility.

2. Setup

2.1 Unboxing and Initial Inspection

Upon receiving your OWON HDS242S, carefully open the packaging and inspect all contents against the packing list. Ensure there are no visible signs of damage from shipping. The standard package includes the main unit, oscilloscope probes, multimeter leads, USB Type-C cable, power adapter, and a carrying bag.

Figure 2.1: The HDS242S and its accessories are designed to fit compactly within the included carrying case for convenient storage and transport.

2.2 Charging the Device

The HDS242S is powered by two 2200mAh lithium batteries, providing approximately 6 hours of continuous operation on a single full charge. Before first use, it is recommended to fully charge the device.

• Connect the provided USB Type-C cable to the device's USB port.
• Connect the other end of the USB cable to the power adapter and plug it into a wall outlet, or connect it to a power bank for portable charging.
• The charging indicator on the device will show the charging status.

Figure 2.2: The USB Type-C interface supports both charging via an adapter or power bank and communication with a host computer for data transfer and software updates.

Figure 2.3: A detailed view of the side panel, highlighting the USB-C charging and communication interface, along with the 1KHz calibration signal output.

2.3 Connecting Probes

Depending on the mode of operation (oscilloscope or multimeter), connect the appropriate probes to the designated input jacks on the device. Ensure connections are secure.

Figure 2.4: The HDS242S with oscilloscope probes connected to the BNC input channels (CH1 and CH2) located at the top of the device.

3. Operating Instructions

3.1 General Interface Overview

The HDS242S features a 3.5-inch high-resolution, high-contrast color LCD display for clear waveform and measurement data visualization. Navigation is intuitive with a simple button panel.

Figure 3.1: A detailed view of the HDS242S display and control panel, highlighting the 3.5-inch LCD and various function buttons for easy operation.

3.2 Oscilloscope Mode

In oscilloscope mode, the HDS242S offers dual-channel input with a 40MHz bandwidth and a waveform refresh rate of up to 10,000wfms/s. It supports various acquisition modes, cursor measurements, and automatic measurement functions.

• Bandwidth: 40MHz
• Channels: 2-Channel
• Sample Rate: 250MSa/s
• Waveform Refresh Rate: 10,000wfms/s
• Acquisition Modes: Normal, Peak Detect, Average
• Auto Measurement: Supports 7 types including Frequency, Period, Amplitude, Max, Min, Mean, and PK-PK.
• Save Function: Ability to save 4 settings, 4 reference waveforms, 4 waveform images, and 4 CSV waveform files.

Figure 3.2: Overview of the handheld oscilloscope's capabilities, including a model comparison table and examples of its application in sensor analysis, electrical engineering, electronic circuit analysis, and automobile electronic circuits.

Figure 3.3: The oscilloscope display demonstrating the automatic measurement of various waveform parameters such as Frequency, Period, Amplitude, Max, Min, Mean, and Peak-to-Peak values.

Figure 3.4: The save function interface, allowing users to store instrument settings, reference waveforms, waveform images, and CSV data for later analysis.

3.3 Multimeter Mode

The integrated multimeter function provides accurate measurements for various electrical parameters with 20,000 counts and True RMS capability.

• Measurements: Voltage (AC/DC), Current (AC/DC), Resistance, Diode, Capacitance, Continuity Test.
• Display Counts: 20,000 counts.
• True RMS: Ensures accurate readings for non-sinusoidal waveforms.

Figure 3.5: The multimeter display demonstrating its 20,000 count resolution and True RMS measurement capability for precise voltage readings.

3.4 Waveform Generator Mode

The built-in waveform generator can output various standard and special waveforms with frequencies up to 25MHz.

• Waveform Types: Sine, Square, Ramp, Pulse, and built-in special waveforms.
• Frequency Range: Up to 25MHz.

Figure 3.6: The waveform generator interface, illustrating settings for sine wave output, including frequency, amplitude, and offset adjustments.

4. Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. For stubborn dirt, a slightly damp cloth with mild detergent can be used. Avoid abrasive cleaners or solvents.
• Storage: When not in use for extended periods, store the device in its carrying case in a cool, dry place, away from direct sunlight and extreme temperatures.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. If storing for a long time, charge the battery to about 50% capacity every few months.
• Probe Care: Keep probes clean and free from dust or debris. Inspect cables for any signs of wear or damage before each use.

5. Troubleshooting

This section addresses common issues you might encounter with your OWON HDS242S.

6. Specifications

Detailed technical specifications for the OWON HDS242S.

7. Warranty and Support

OWON products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the official OWON website or contact their customer service department. Keep your purchase receipt as proof of purchase for warranty claims.

For further assistance, visit the OWON Store on Amazon.