AS Series Oscilloscopes User Manual www.owon.com.
July 2019 edition V1.0.1 Copyright © LILLIPUT Company. All rights reserved. The LILLIPUT's products are under the protection of the patent rights, including ones which have already obtained the patent rights and those which are applied for. The information in this manual will replace all materials published. The information in this manual was correct at the time of printing. However, LILLIPUT will continue to improve products and reserves the rights to change specification at any time without notice.
General Warranty OWON 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 OWON Company. The warranty period for accessories such as probes is 12 months. This warranty only applies to the original purchaser and is not transferable to a third party.
Table of Contents 1. General Safety Requirements ......................................................................... 1 2. Safety Terms and Symbols ............................................................................. 2 3. User Guidebook ............................................................................................... 4 Structure of the Oscilloscope .................................................................................... 4 Front Panel ..................................
1.General Safety Requirements 1. General Safety Requirements Before use, please read the following safety precautions to avoid any possible bodily injury and to prevent this product or any other connected products from damage. In order to avoid any contingent danger, ensure this product is only used within the range specified. Only the qualified technicians can implement the maintenance. To avoid Fire or Personal Injury: Connect the probe correctly.
2.Safety Terms and Symbols 2. Safety Terms and Symbols Safety Terms Terms in this manual. The following terms may appear in this manual: Warning: Warning indicates the 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. Terms on the product. The following terms may appear on this product: Danger: It indicates an injury or hazard may immediately happen.
2.Safety Terms and Symbols To avoid body damage and prevent product and connected equipment damage, carefully read the following safety information before using the test tool. This product can only be used in the specified applications. Warning: In X-Y mode, the X Input and Y Input of the oscilloscope are not electrically isolated. The channels should adopt a common ground during measuring. To prevent short circuits, the 2 probe grounds must not be connected to 2 different non-isolated DC levels.
3.User Guidebook 3. User Guidebook Structure of the Oscilloscope This chapter makes a simple description of the operation and function of the front panel of the oscilloscope, enabling you to be familiar with the use of the oscilloscope in the shortest time. Front Panel 1 19 18 2 3 17 4 5 6 7 8 9 16 15 14 13 12 11 10 Figure 3-1 Front panel No. Name Description 1 Display screen Display the trace. 2 Run/Stop Enable or disable sampling on input signals.
3.User Guidebook 5 Level Control signal trigger to sweep at certain level. Towards "-": The triggering level moves downward on the display waveform. Towards "+": The triggering level moves upward on the display waveform. 6 Time/DIV Select the sweep rate. Lock When the Lock button is pressed down, the triggering level is automatically maintained at optimum value irrespective of the signal amplitude, requiring no manual adjustment of triggering level. Norm/Auto/TV Select the desired trigger mode.
3.User Guidebook 15 +/-/XY +: Trigger on rising slope. Triggering occurs when the triggering signal crosses the triggering level in positive-going direction. -: Trigger on falling slope. Triggering occurs when the triggering signal crosses the triggering level in negative-going direction. XY: This position is used when using the instrument as an X-Y oscilloscope. 16 Volts/DIV Adjusting sensitivity of vertical system. 17 △ ▽Position Control vertical position of trace on the screen.
3.User Guidebook 20 AC Power input Connect the supplied AC power cord to this connector connector. 21 Fuse holder Fuse rating is 1A, T class, 250 V. 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.
3.User Guidebook AC/DC/⊥ Lock 13 7 ⊥ Pressed down 2. Connect the power cord to the AC line outlet. Press the power switch ○ — on the front panel to power on, the screen will light up. A few seconds later, a trace will appear on the screen. 3. Align the trace with the horizontal center line of the graticule by adjusting the △ ▽ Position knob. A E E A 4. Connect the probe to the Y Input terminal and apply the 0.5 Vpp CALIBRATOR signal to be probe tip. 5. Set the AC/DC/⊥ switch to the AC state.
3.User Guidebook Compensated correctly Overcompensated Under compensated Figure 3-3 Displayed Waveforms of the Probe Compensation Figure 3-4 Adjust Probe Set the Probe Attenuation Coefficient The probe has several attenuation coefficients, which will influence the vertical scale factor of the oscilloscope. The set values of the probe switch are 1X and 10X (see Figure 3-5).
3.User Guidebook Figure 3-6 Finger Guard Warning: To avoid electric shock, always keep your finger behind the safety guard ring of the probe during the operation. To protect you from suffering from the electric shock, do not touch any metal part of the probe tip when it is connected to the power supply. Before making any measurements, always connect the probe to the instrument and connect the ground terminal to the earth.
3.User Guidebook The signal must be centered and kept in the horizontal direction. Figure 3-7 Lissajous Graph Based on the expression sin (q) =A/B or C/D, thereinto, q is the phase difference angle, and the definitions of A, B, C, and D are shown as the graph above. As a result, the phase difference angle can be obtained, namely, q =± arcsin (A/B) or ± arcsin (C/D).
4.Troubleshooting 4. Troubleshooting 1. Oscilloscope is powered on but no Display. Check whether the power connection is connected properly. Check whether the fuse which is beside the AC power input jack is blew (the cover can be pried open with a straight screwdriver). Restart the instrument after completing the checks above. If the problem persists, please contact OWON and we will be under your service. 2. After acquiring the signal, the waveform of the signal is not displayed in the screen.
5.Technical Specifications 5. Technical Specifications Unless otherwise specified, the technical specifications applied are for single-channel series only, and Probes attenuation set as 10X. Only if the oscilloscope fulfills the following condition at first, these specification standards can be reached. This instrument should run for at least 30 minutes continuously under the specified operating temperature. All specification standards can be fulfilled, except one(s) marked with the word "Typical".
5.Technical Specifications Trigger Lock Edge Trigger supported Slope rising, falling supported standard: NTSC, PAL and Video Trigger Modulation SECAM broadcast systems Ext. Trigger Input Impedance 1 MΩ ± 2%, in parallel with 20 pF±5 pF Ext. Trigger Max. Input Voltage 400 Vpp Trigger Source Int, Line, Ext Trigger Mode Norm, Auto, and TV Output of the Probe Compensator Output Voltage (typical) square, 0.
6.Appendix 6. Appendix Appendix A: Enclosure (The accessories subject to final delivery.) Standard Accessories: Power Cord Quick Guide Probe Spare Fuse Probe Adjust Appendix B: General Care and Cleaning General Care Do not store or leave the instrument where the display will be exposed to direct sunlight for long periods of time. Caution: To avoid any damage to the instrument or probe, do not exposed it to any sprays, liquids, or solvents.
