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DSO-111 Oscilloscope
Quick Guide
Page 1: ...i DSO 111 Oscilloscope Quick Guide ...
Page 2: ...ok 4 Structure of the Oscilloscope 4 Front Panel 4 Rear Panel 6 General Inspection 7 Basic Operation 7 Probe Compensation 8 Set the Probe Attenuation Coefficient 9 Use the Probe Safely 9 X Y Mode 10 4 Troubleshooting 12 5 Appendix 13 Appendix A Enclosure 13 Appendix B General Care and Cleaning 13 ...
Page 3: ...grounded The product must be grounded properly before any connection with its input or output terminal When powered by AC power it is not allowed to measure AC power source directly because the testing ground and power cord ground conductor are connected together otherwise it will cause short circuit Check all Terminal Ratings To avoid fire or shock hazard check all ratings and markers of this pro...
Page 4: ... 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 Warning It indicates an injury or hazard may be accessible potentially Caution It indicates a potential damage to the instrument or other property might occur Safety Symbols Symbols on the product The following symbol may ap...
Page 5: ... oscilloscope ground wire connection Warning To avoid fire or electrical shock when the oscilloscope input signal connected is more than 42V peak 30Vrms or on circuits of more than 4800VA please take note of below items Only use accessory insulated voltage probes and test lead Check the accessories such as probe before use and replace it if there are any damages Remove probes test leads and other ...
Page 6: ...r with the use of the oscilloscope in the shortest time Front Panel 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 Var right side Provides continuously variable sweep rate Turn clockwise until the waveform does not change is the calibration position 4 Position Horizontal positioning control of trace on the scre...
Page 7: ...y generated when adequate trigger signal is present TV Used to show TV signals 9 X Input When switching to XY mode it s X input terminal When switching the trigger source to Ext it s external trigger input terminal 10 Int Line Ext Switch to select the Trigger Source Int Select internal signal as trigger source signal Line Select AC power line as trigger signal Ext The external signal applied throu...
Page 8: ...g 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 18 Var left side Continuously adjusting the sensitivity of vertical system Turn clockwise until the waveform does not change is the calibration position 19 Power switch Main p...
Page 9: ...ccessories with reference to this description If it is found that there is any accessory lost or damaged please get in touch with the distributor of our responsible for this service or our local offices 3 Check the Complete Instrument If it is found that there is damage to the appearance of the instrument or the instrument can not work normally or fails in the performance test please get in touch ...
Page 10: ...s so that the displayed waveform is aligned with the graticule and voltage and period can be read conveniently Probe Compensation When connect the probe with the input channel for the first time make this adjustment to match the probe with the input channel The probe which is not compensated or presents a compensation deviation will result in the measuring error or mistake For adjusting the probe ...
Page 11: ... vertical scale factor of the oscilloscope The set values of the probe switch are 1X and 10X see Figure 3 5 Figure 3 5 Attenuation Switch Caution When the attenuation switch is set to 1X the probe will limit the bandwidth of the oscilloscope in 5MHz or 6MHz To use the full bandwidth of the oscilloscope the switch must be set to 10X Use the Probe Safely The safety guard ring around the probe body p...
Page 12: ...when examining the Phase difference of two signals 1 Set the XY control on the front panel to the XY position 2 Set the switch in the probe to 1X or 10X depend on your need see Set the Probe Attenuation Coefficient on P9 3 Connect the probe of Y Input to the Y axis signal vertical axis signal Connect the probe of X Input to the X axis signal horizontal axis signal 4 Turn the Volts DIV knob to set ...
Page 13: ...y q arcsin A B or arcsin C D If the principal axis of the ellipse is in the I and III quadrants the determined phase difference angel should be in the I and IV quadrants that is in the range of 0 π 2 or 3π 2 2π If the principal axis of the ellipse is in the II and IV quadrants the determined phase difference angle is in the II and III quadrants that is within the range of π 2 π or π 3π 2 The signa...
Page 14: ...ly the channel connector Check whether the probe is properly connected with the object to be measured Check whether there is any signal generated from the object to be measured the trouble can be shot by the connection of the channel from which there is a signal generated with the channel in fault Make the signal acquisition operation again 3 The measured voltage amplitude value is 10 times or 1 1...
Page 15: ...often as operating conditions require To clean the instrument exterior perform the following steps 1 Wipe the dust from the instrument and probe surface with a soft cloth Do not make any scuffing on the transparent LCD protection screen when clean the LCD screen 2 Disconnect power before cleaning your Oscilloscope Clean the instrument with a wet soft cloth not dripping water It is recommended to s...
