Owon HDS20 Series Quick Manual

Handheld oscilloscope

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HDS20 Dual Channel Series

Handheld Oscilloscope Quick Guide

 HDS25（S）

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※：The illustrations, interface, icons and characters in the user manual may be slightly

different from the actual product. Please refer to the actual product.

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Summary of Contents for Owon HDS20 Series

Page 1 HDS20 Dual Channel Series Handheld Oscilloscope Quick Guide  HDS25（S） For product support, visit: www.owon.com.hk/download ※：The illustrations, interface, icons and characters in the user manual may be slightly different from the actual product. Please refer to the actual product.
Page 2 LILLIPUT Company. Fujian LILLIPUT Optoelectronics Technology Co., Ltd. No. 19, Heming Road Lantian Industrial Zone, Zhangzhou 363005 P.R. China Tel: +86-596-2130430 Fax: +86-596-2109272 Web: E-mail: www.owon.com info@owon.com.cn...
Page 3 General Warranty We warrants that the product will be free from defects in materials and workmanship for a period of 3 years from the date of purchase of the product by the original purchaser from the our Company. The warranty period for accessories such as probes, adapter is 12 months.
Page 4 Table of Contents 1. Safety Information ..................1 Safety Terms and Symbols ......................1 Safety Requirements ........................1 2. How to Implement the General Inspection ..........5 3. How to Use the Oscilloscope ..............6 The Structure of the Oscilloscope ..................6 Front Panel and Keys ......................6 Side Panel ..........................8 Introduction to the User Interface of the Oscilloscope ............
Page 5 1. Safety Information (Before using this product, please read the safety information in advance) Safety Terms and Symbols Terms in this manual The following terms may appear in this manual: Warning: Warning indicates conditions or practices that could result in injury or loss of life. Caution: Caution indicates the conditions or practices that could result in damage to this product or other property.
Page 6 Please read the following safety precautions to avoid personal injury and prevent damage to this product or any other products connected to it. In order to avoid possible hazards, this product can only be used within the specified range.  Only a qualified person should perform internal maintenance. ...
Page 7 oscilloscope probe. Schematic diagram of the internal ground wire connection of the oscilloscope: Schematic diagram of internal ground connection when oscilloscope is connected with computer through the port: When the oscilloscope is AC powered by adapter or connected with AC powered computer through the port, it is not allowed to measure the primary power supply of power grid.
Page 8 voltage difference of more than 400 V to the isolated input port.  Do not use an input voltage higher than the rated value of the instrument. Pay special attention when using 1:1 test wires, because the probe voltage will be directly transmitted to the oscilloscope. ...
Page 9 2. How to Implement the General Inspection After you get a new oscilloscope, it is recommended that you should make a check on the instrument according to the following steps: 1. Check whether there is any damage caused by transportation. If it is found that the packaging carton or the foamed plastic protection cushion has suffered serious damage, do not throw it away first till the complete device and its accessories succeed in the electrical and...
Page 10 3. How to Use the Oscilloscope The Structure of the Oscilloscope Front Panel and Keys The front panel and keys of the oscilloscope are shown in Figure 3- 1: Figure 3- 1:Front Panel of the Oscilloscope...
Page 11 Description: 1. CH1 and CH2 input connectors. 2. Waveform generator output connector (optional). 3. Display area. 4. The F1 - F4 keys are multi-function keys. In each menu mode, press the corresponding key to select the corresponding menu item. 5. After pressing the HOR key, through the key , you can change the horizontal time base setting, and observe the change of the state information caused by it;...
Page 12 15. Enter the system settings key. 16. Switch key for working state of oscilloscope and multimeter. 17. CH1 / CH2 - channel switch key. Side Panel Figure 3- 2: Side Panel of the Oscilloscope Description: 1. Probe compensation: 3.3V/1kHz square wave signal output. 2.
Page 13 Introduction to the User Interface of the Oscilloscope Figure 3- 3:Oscilloscope Interface Description: 1. The trigger status indicates the following information: Auto: Automatic mode. The waveform is being collected without triggering. Trig: A trigger has been detected and post trigger information is being collected.
Page 14 7. It indicates that there is a USB disk connecting. 8. Battery power and external power supply indication. 9. Channel 1 waveform. 10. The pointer indicates the trigger electrical level position of the channel. 11. Channel 2 waveform. 12. The icon indicates trigger-related information, including trigger channel, coupling mode, trigger type and trigger electrical level.
Page 15 2. The switch on the oscilloscope probe is set to 10X and connected with the CH1 channel. Align the slot on the probe with the plug on the bayonet nut connector (BNC) of the CH1 connector and insert it, then turn the probe to the right and tighten it.
Page 16 with CH1. If a hook probe is used, make sure it is in close contact with the probe. Connect the probe tip to the signal output connector of the probe compensator, and connect the reference wire clamp to the ground wire connector of the probe compensator, and then press the Auto key on the front panel.
Page 17 Note: The preset setting of the probe attenuation coefficient in the menu when the oscilloscope is delivered is 10X. Make sure that the attenuation switch setting value on the probe is the same as the probe attenuation coefficient option in the oscilloscope menu.
Page 18 4. How to Use the Multimeter About This Chapter This chapter introduces the multimeter function of the oscilloscope step by step, and provides some basic examples of basic operations and how to use the menu. Instrument Interface The multimeter uses four 4-mm safety banana plug input ends: A, mA, COM, Multimeter interface: Multimeter Interface Description:...
Page 19 Resist ------ Resistance measurement Diode ------ Diode measurement Cont ------ On/Off measurement ------ Capacitance measurement 2.Range indication: Manual means manual range; Auto means automatic range. 3. Current measurement range. 4. Indicating that there is a USB cable inserted. 5. Battery power indication. 6.
Page 20 5. How to Use the Waveform Generator（optional） The instrument can provide 4 basic waveforms, sine wave, square wave, ramp wave, pulse wave, and 8 arbitrary waveforms. Connect the output Press the Mode button to switch the instrument interface to the waveform generator function interface.
Page 21 6. Communication with PC The oscilloscope supports communications with a PC through USB. You can use the Oscilloscope communication software to store, analyze, display the data and remote control. To learn about how to operate the software. Please download the oscilloscope communication software on our official download website and view it.
Page 22 7. Troubleshooting 1. The oscilloscope cannot be turned on. It may be that the battery is completely exhausted. At this time, even if the oscilloscope is powered by the power adapter, the oscilloscope cannot be turned on. You need to charge the battery first, and do not turn on the oscilloscope.
Page 23 RUN/STOP. Check whether the trigger mode of the trigger mode menu is normal or single, and the trigger electrical level is out of the waveform range. If so, center the trigger electrical level or set the trigger mode to automatic. In addition, you can press Auto to automatically complete the above settings.
Page 24 8. Appendix Appendix A: List of Accessories  1 USB cable  1 passive probes  1 crocodile clip cable  1 set of multimeter probes (one red and one black)  1 user manual  1 probe correction adjustment knife Appendix B: Maintenance and Cleaning General maintenance Do not store or place the instrument in a place where the LCD screen will be...
Page 25 to avoid electrical short circuit or personal injury caused by moisture. Charging and Replacement of Battery During the long-term storage of the device, the battery may be too low due to the self-discharge of the lithium battery and the device cannot be turned on. This is a normal phenomenon.
Page 26 abnormal operation of the equipment). Note To avoid overheating of the battery during charging, the ambient temperature must not exceed the allowable value given in the technical specifications. Replacement of Lithium Battery Generally, the battery does not need to be replaced. However, when necessary, it can only be replaced by qualified personnel, and only lithium batteries of the same specification can be used.

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