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Scientific SMO502ED User Manual

Digital storage oscilloscope
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Digital Storage Oscilloscope
SMO502ED, SMO1002ED
User Manual

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  • Page 1 Digital Storage Oscilloscope SMO502ED, SMO1002ED User Manual...
  • Page 2 Information in this manual supersede all corresponding previous released material. Scientific continues to improve products and reserves rights to amend part or all of the specifications, procedures, equipment at any time without notice. Ver1.0/0822 Scientific Mes-Technik Pvt.

  • Page 3: Table Of Contents

    Chapter 6 Demonstration ..............57 Example 1: Measurement a Simple Signal .......57 Example 2: Gain of a Amplifier in a Metering Circuit ....58 Example 3: Capturing a Single Signal ........59 Example 4: Analyze the Details of a Signal ......61 SMO502ED,SMO1002ED Manual 3/69...
  • Page 4 Scientific Example 5: Application of X-Y Function ........63 Example 6: Video Signal Trigger..........65 Chapter 7 Troubleshooting ..............66 Chapter 8 Maintenance and Service ............68 Chapter 9 E-Waste Management & Warranty ...........69 SMO502ED,SMO1002ED Manual 4/69...

  • Page 5: Chapter 1 General Safety Requirements

    Use your Oscilloscope in a well-ventilated area. Make sure the instrument • installed with proper ventilation. Do not operate in damp conditions. • Do not operate in an explosive atmosphere. • Keep product surfaces clean and dry. • SMO502ED,SMO1002ED Manual 5/69...

  • Page 6: Chapter 2 Safety Terms And Symbols

    Protective Earth Terminal Chassis Ground Test Ground 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. SMO502ED,SMO1002ED Manual 6/69...
  • Page 7 Use with caution when the probe is set as 1:1. Do not use exposed metal BNC or banana plug connectors. • Do not insert metal objects into connectors. • SMO502ED,SMO1002ED Manual 7/69...

  • Page 8: Chapter 3 Quick Start

    The other buttons are function buttons, through which, you can enter different function menus or obtain a specific function application directly. Figure 3-1 Front panel SMO502ED,SMO1002ED Manual 8/69...

  • Page 9: Rear Panel

    4. Foot stool: Adjust the tilt angle of the oscilloscope. 5. USB Device port: It is used to transfer data when external USB equipment connects to the oscilloscope regarded as "slave device". For example: to use this port when connect PC to the oscilloscope by USB. SMO502ED,SMO1002ED Manual 9/69...

  • Page 10: Control Area

    The waveform, configure or the display screen could be saved according to the chosen type in the Save menu. 5. Vertical control area with 3 buttons and 4 knobs. "CH1" and "CH2 " correspond to setting menu in CH1 and CH2, "Math" SMO502ED,SMO1002ED Manual 10/69...

  • Page 11: Display Interface

    Display Interface Figure 3-3 Display Interface 1. Waveform Display Area. 2. Run/Stop 3. The state of trigger, including: Auto: Automatic mode and acquire waveform without triggering. Trig: Trigger detected and acquire waveform. SMO502ED,SMO1002ED Manual 11/69...
  • Page 12 "PW" the +width value, "NW" the -Width value, "+D" the +Duty value, "-D" the -Duty value, "PD" the Delay A->B value, "ND" the Delay A->B value, "TR" the Cycle RMS, "CR" the Cursor RMS, "WP" the Screen SMO502ED,SMO1002ED Manual 12/69...

  • Page 13: General Inspection

    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 SMO502ED,SMO1002ED Manual 13/69...

  • Page 14: Function Inspection

    10X. 2. Set the Switch in the Oscilloscope Probe as 10X and Connect the Oscilloscope with CH1 Channel. Align the slot in the probe with the plug in the CH1 connector BNC, and SMO502ED,SMO1002ED Manual 14/69...

  • Page 15: Probe Compensation

    Coefficient" on P16) and connect the probe with the CH1 channel. If a probe hook tip is used, ensure that it keeps in close touch with the probe. Connect the probe tip with the signal connector of the probe compensator SMO502ED,SMO1002ED Manual 15/69...

  • Page 16: Probe Attenuation Coefficient

    2. Select Probe in the right menu; turn the M knob to select the proper value in the left menu corresponding to the probe. This setting will be valid all the time before it is changed again. Caution: SMO502ED,SMO1002ED Manual 16/69...

  • Page 17: To Use Probe Safely

    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. SMO502ED,SMO1002ED Manual 17/69...

  • Page 18: Self-Calibration

    The Vertical Position knob functions the regulating of the vertical display position of the signal. Thus, when the Vertical Position knob is rotated, the pointer of the earth datum point of the channel is directed to move up and down following the waveform. SMO502ED,SMO1002ED Manual 18/69...

  • Page 19: Introduction To Horizontal System

    3.10 Introduction to Horizontal System Shown as Figure 3-11, there are a button and two knobs in the Horizontal Controls. The following practices will gradually direct you to be familiar with the setting of horizontal time base SMO502ED,SMO1002ED Manual 19/69...

  • Page 20: Introduction To Trigger System

    3.11 Introduction to Trigger System As shown in Figure 3-12, there are one knob and three buttons make up Trigger Controls. The following practices will direct you to be familiar with the setting of the trigger system gradually. SMO502ED,SMO1002ED Manual 20/69...
  • Page 21 3. Push the Force button to force a trigger signal, which is mainly applied to the "Normal" and "Single" trigger modes. SMO502ED,SMO1002ED Manual 21/69...

  • Page 22: Chapter 4 Advanced User Guidebook

    How to Measure Automatically • How to Measure with Cursors • How to Use Executive Buttons It is recommended that you read this chapter carefully to get acquainted the various measurement functions and other operation methods of the oscilloscope. SMO502ED,SMO1002ED Manual 22/69...

  • Page 23: How To Set The Vertical System

    Yes. Turn the M knob to set the Amps/Volts ratio. The range is 100 mA/V - 1 KA/V. or mA/V or mV/A Amps/Volts ratio = 1/Resistor value Volts/Amp ratio is automatically calculated. SMO502ED,SMO1002ED Manual 23/69...
  • Page 24 Take the Channel 1 as an example, the attenuation coefficient of the probe is 10:1, the operation steps are shown as follows: Push the CH1 button to show the CH1 SETUP menu. SMO502ED,SMO1002ED Manual 24/69...

  • Page 25: How To Use Mathematical Function

    Enter next page Vertical Turn the M knob to adjust the vertical (div) position of the Math waveform. Vertical Turn the M knob to adjust the voltage (V/div) division of the Math waveform. Prev Page Enter previous page SMO502ED,SMO1002ED Manual 25/69...

  • Page 26: Fft Function

    0Hz to Nyquist frequency. Press the Math button to display the menu on the right, select Type as FFT. Function Menu Setting Description Type Display the FFT menu Select CH1 as FFT source. Source Select CH2 as FFT source. SMO502ED,SMO1002ED Manual 26/69...
  • Page 27 M knob to adjust the time base of FFT waveform. Select Vertical in the right menu; do the same operations as above to set the vertical position and voltage division. SMO502ED,SMO1002ED Manual 27/69...
  • Page 28 Good for magnitude, but poorer frequency resolution than Hamming. Recommend to use for: Sine, periodic and narrow band random Hanning noise. Transients or bursts where the signal levels before and after the event are significantly different. SMO502ED,SMO1002ED Manual 28/69...

  • Page 29: Use Vertical Position And Scale Knobs

    Frequencies above the Nyquist frequency will be under sampled, which causes aliasing. So pay more attention to the relation between the frequency being sampled and measured. Use Vertical Position and Scale Knobs The Vertical Position knob is used to adjust the vertical positions of the waveforms. SMO502ED,SMO1002ED Manual 29/69...

  • Page 30: How To Set The Horizontal System

    Horizontal Scale knob: it is used to set the horizontal scale factor for setting the main time base or the window. Horizontal HOR button: push it to switch between the normal mode and the wave zoom mode. For more detailed operations, see the introductions below. SMO502ED,SMO1002ED Manual 30/69...

  • Page 31: Zoom The Waveform

    Trigger control area consists of 1 knob and 2 menu buttons. Trigger Level: The knob that set the trigger level; push the knob and the level will be set as the vertical mid point values of the amplitude of the trigger signal. SMO502ED,SMO1002ED Manual 31/69...

  • Page 32: Single Trigger

    CH1, coupling is DC, and trigger level is 0.00mV. Edge menu list: Menu Settings Instruction Type Single Set vertical channel trigger type as single trigger. Single Edge Set vertical channel single trigger type as edge trigger. SMO502ED,SMO1002ED Manual 32/69...
  • Page 33 MENU SETTING INSTRUCTION Type Single Set vertical channel trigger type as single trigger. Single Video Set vertical channel single trigger type as video trigger. Select CH1 as the trigger source Source Select CH2 as the trigger source SMO502ED,SMO1002ED Manual 33/69...

  • Page 34: Alternate Trigger

    Set Holdoff time as default value (100 ns). Reset Prev Page Enter previous page How to Operate the Function Menu The function menu control zone includes 4 function menu buttons: Utility, Measure, Acquire, Cursor, and 2 immediate-execution buttons: Autoset, SMO502ED,SMO1002ED Manual 34/69...

  • Page 35: How To Set The Sampling/Display

    When the Persist function is used, the persistence display effect of the picture tube oscilloscope can be simulated. The reserved original data is displayed in fade color and the new data is in bright color. Push the Acquire button. SMO502ED,SMO1002ED Manual 35/69...
  • Page 36 The frequency range is from 2Hz to the full bandwidth. Only if the measured channel is in Edge mode of Single trigger type, the counter can be enabled. The counter is displayed at the bottom of the screen. SMO502ED,SMO1002ED Manual 36/69...

  • Page 37: How To Save And Recall A Waveform

    "None is saved". Next Page Enter next page Close all the waveforms stored in the Close All object address. SMO502ED,SMO1002ED Manual 37/69...
  • Page 38 The file is stored in BMP format. Save and Recall the Waveform The oscilloscope can store 16 waveforms, which can be displayed with the current waveform at the same time. The stored waveform called out can not be adjusted. SMO502ED,SMO1002ED Manual 38/69...
  • Page 39 M knob to choose the keys; press the M knob to input the chosen key. The length of file name is up to 25 characters. Select the key in the keyboard to confirm. Recalling: The BIN waveform file could be open by waveform analysis software (supplied on the CD). SMO502ED,SMO1002ED Manual 39/69...
  • Page 40 USB disk, first by using computer system to format, the other one is through formatting software to format. (8G or above USB disk can only use the second method to format, that is through formatting software to format.) SMO502ED,SMO1002ED Manual 40/69...

  • Page 41: How To Implement The Auxiliary System Function Setting

    OFF, 5S – 30S Turn the M knob to set the disappear time of menu Adjust Push the Utility button, select Function in the right menu, select Adjust in the left menu. The description of Adjust Menu is shown as the follows: SMO502ED,SMO1002ED Manual 41/69...
  • Page 42 Select ProbeCh. again to begin probe checking and the checking result will occur after 3s; push any other key to quit. Save You can save the waveforms, configures or screen images. Refer to "How to Save and Recall a Waveform" on page 37. SMO502ED,SMO1002ED Manual 42/69...

  • Page 43: How To Update Your Instrument Firmware

    Insert the USB memory device into the front-panel USB port on your instrument. Push the Utility button, select Function in the right menu, select Update in the left menu. In the right menu, select Start, the messages below will be shown. SMO502ED,SMO1002ED Manual 43/69...

  • Page 44: How To Measure Automatically

    The oscilloscopes provide 30 parameters for auto measurement, including Period, Frequency, Mean, PK-PK, RMS, Max, Min, Top, Base, Amplitude, Overshoot, Preshoot, Rise Time, Fall Time, +PulseWidth, -PulseWidth, +Duty Cycle, -Duty Cycle, Delay A , Delay A , Cycle RMS, → → SMO502ED,SMO1002ED Manual 44/69...
  • Page 45 In the left Type menu, turn the M knob to select Period. In the right menu, select AddCH1. The period type is added. In the left Type menu, turn the M knob to select Frequency. In the right menu, select AddCH1. The frequency type is added. SMO502ED,SMO1002ED Manual 45/69...
  • Page 46 The oscilloscopes provide automatic voltage measurements including Mean, PK-PK, RMS, Max, Min, Vtop, Vbase, Vamp, OverShoot, PreShoot, Cycle RMS, and Cursor RMS. Figure 4-13 below shows a pulse with some of the voltage measurement points. Figure 4-13 SMO502ED,SMO1002ED Manual 46/69...
  • Page 47 The oscilloscopes provide time parameters auto-measurements include Period, Frequency, Rise Time, Fall Time, +D width, -D width, +Duty, -Duty, Delay A → , Delay A and Duty cycle. → Figure 4-14 shows a pulse with some of the time measurement points. SMO502ED,SMO1002ED Manual 47/69...
  • Page 48 Other measurements +PulseCount : The number of positive pulses that rise above the mid reference crossing in the waveform. -PulseCount : The number of negative pulses that fall below the mid reference crossing in the waveform. SMO502ED,SMO1002ED Manual 48/69...

  • Page 49: How To Measure With Cursors

    Display the time and voltage measurement cursor Type and menu. AutoCursr The horizontal cursors are set as the intersections of the vertical cursors and the waveform Line Type Time Makes the vertical cursors active. (Time&Vol Makes the horizontal cursors active. tage type) Voltage SMO502ED,SMO1002ED Manual 49/69...
  • Page 50 6. Push the horizontal HOR button to enter wave zoom mode. Push Cursor to show the right menu, select Window as Main or Extension to make the cursors shown in the main window or zoom window. SMO502ED,SMO1002ED Manual 50/69...
  • Page 51 The Cursor Measurement for FFT mode In FFT mode, push the Cursor button to turn cursors on and display the cursor menu. The description of the cursor menu in FFT mode is shown as the SMO502ED,SMO1002ED Manual 51/69...
  • Page 52 If the Line in the right menu is select as a, turn the M knob to move line a to the right or left. If b is selected, turn the M knob to move line b. 6. In the right menu, select Line Type as Vamp to make the horizontal SMO502ED,SMO1002ED Manual 52/69...

  • Page 53: How To Use Executive Buttons

    Judge waveform type by Autoset Five kinds of types: Sine, Square, video signal, DC level, Unknown signal. Menu as follow: Waveform Menu Sine Multi-period, Single-period, FFT, Cancel Autoset Square Multi-period, Single-period, Rising Edge, Falling Edge, Cancel Autoset SMO502ED,SMO1002ED Manual 53/69...
  • Page 54 Pressing this button is equal to the Save option in the Save menu. The waveform, configure or the display screen could be saved according to the chosen type in the Save menu. For more details, please see "How to Save and Recall a Waveform" on P37. SMO502ED,SMO1002ED Manual 54/69...

  • Page 55: Chapter 5 Communication With Pc

    Port setting of the software: Run the Oscilloscope software; click "Communications" in the menu bar, choose "Ports-Settings", in the setting dialog, choose "Connect using" as "USB". After connect successfully, the connection information in the bottom right corner of the software will turn green. SMO502ED,SMO1002ED Manual 55/69...
  • Page 56 Scientific Figure 5-1 Connect with PC through USB port SMO502ED,SMO1002ED Manual 56/69...

  • Page 57: Chapter 6 Demonstration

    In the left Type menu, turn the M knob to select Frequency. In the right menu, select AddCH1. The frequency type is added. The measured value will be displayed at the bottom left of the screen automatically (see Figure 6-1). SMO502ED,SMO1002ED Manual 57/69...

  • Page 58: Example 2: Gain Of A Amplifier In A Metering Circuit

    Push the Measure button to show the right menu. Select AddCH1 in the right menu. In the left Type menu, turn the M knob to select PK-PK. In the right menu, select AddCH1. The peak-to-peak type of CH1 is added. SMO502ED,SMO1002ED Manual 58/69...

  • Page 59: Example 3: Capturing A Single Signal

    Here is how we achieve this. SMO502ED,SMO1002ED Manual 59/69...
  • Page 60 By turning the Horizontal Position knob in the horizontal control area in the panel, you can change the horizontal triggering position to obtain the negative delay, making an easy observation of the waveform before the burr occurs (see Figure 6-3). SMO502ED,SMO1002ED Manual 60/69...

  • Page 61: Example 4: Analyze The Details Of A Signal

    The signal displayed on the screen containing some noise, by turning on Peak Detect function and changing time base to slow down the incoming signal, any peaks or burr would be detected by the function (see Figure 6-4). SMO502ED,SMO1002ED Manual 61/69...
  • Page 62 User would see a much reduced random noise level and make it easy to see more details of the signal itself. After applying Average, user can easily identify the burrs on the rising and falling edges of some part of the signal (see Figure 6-5). SMO502ED,SMO1002ED Manual 62/69...

  • Page 63: Example 5: Application Of X-Y Function

    Connect the probe of channel 1 to the input of the network and that of Channel 2 to the output of the network. Push the Autoset button, with the oscilloscope turning on the signals of the two channels and displaying them in the screen. SMO502ED,SMO1002ED Manual 63/69...
  • Page 64 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). SMO502ED,SMO1002ED Manual 64/69...

  • Page 65: Example 6: Video Signal Trigger

    In the right menu, press Next Page, select Sync as Field. Turn the Vertical Scale, Vertical Position and Horizontal Scale knobs to obtain a proper waveform display (see Figure 6-7). Figure 6-7 Waveform Captured from Video Field Trigger SMO502ED,SMO1002ED Manual 65/69...

  • Page 66: Chapter 7 Troubleshooting

    Check on the trigger Type item: The common signal chooses the • Edge trigger mode for Type and the video signal the Video. If Alternate trigger is selected, both of the channel 1 and channel 2 SMO502ED,SMO1002ED Manual 66/69...
  • Page 67 AVERAGE value in Acqu Mode (see "How to Set the Sampling/Display" on P35 ) or a longer duration is set in the Persist in Display (see "Persist" on P35). It's normal as the Oscilloscope is working hard on many more data points. SMO502ED,SMO1002ED Manual 67/69...

  • Page 68: Chapter 8 Maintenance And Service

    2. Dispatch the instrument (only on the receipt of our advice) securely packed in original packing duly insured and freight paid along with accessories and a copy of the faults details noticed at our Service Center listed on last page of this manual, nearest to you. SMO502ED,SMO1002ED Manual 68/69...

  • Page 69: Chapter 9 E-Waste Management & Warranty

    Warranty Scientific warrants the instrument to be free from defects in material and workmanship when used under normal operating conditions in accordance with the instructions given in the manual for a period of 12 (Twelve) months from date of purchase from Scientific or its authorized dealers.

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