Understanding and Using Digital Storage Oscilloscope
Contents
1. oo amani mnanaa 21 Setting the Probe Attenuation Coefficient aaa 22 Probe Safety Henna NA a A tati 23 A ad eae AAA 24 Vertical System lattes teste roaches ade ca a da 25 Horizontal NM ae 26 Bea Silea A E 27 UA NB ri 28 Vertical SYM 29 MATH Foro ais 35 Application of VERTICAL POSITION and VOLTS DIV Controls 36 Horizontal System ida ia 37 Nam Time Base nadaa 38 AS A 39 Window Expansion noni awa 40 MS ia 41 KN Per Control ta ess A A ee 42 WAA UT nacen id 42 Video TTS Ger atta staan tl en LA at ili 45 Function Menia dia 48 Sampling Setup ra Ai a sea SANDAKAN A 48 Display YM ds 51 A A A A I ONTO AN A SA E 54 6 16 6 17 6 18 6 19 6 20 6 21 6 22 6 23 6 24 6 25 6 26 6 27 10 XY Formato dienes EEE E anna MAANA Mee 54 How to Save and Recall a Wave Form iii 56 Save and Recall the Wave Form ii 57 How to Carry on the Auxiliary System Function Setting 58 Do Self Cal Self Calibration aaa 59 SYS STAT System State KA AE NN NN 59 How to Conduct the Automatic Measurement ooooooo 61 MEA BEN SEN SIA MAE NAKAKAN 61 How to Carry on the Cursor Measurement in 63 Cursor Measurement i 64 Execution Controls tt sedis eee iain Gite india sede ti a ae eee een 66 AUTOSE lora LA RR 66 Maintenance Cleaning and Repairing ooooooooooooooo2. HASSAN Mr Nagaraj M L Aplab Ltd Room No 2 C S M Building 2nd Cross Behind Mathrushree Hospital Salegame Road Hassan 573 201 Mobile No 99456 50564 77
3. Press the F2 menu selection button and select Rising for Slope Press the F4 menu selection button and choose Auto for Mode 2 3 4 Press the F3 menu selection button and choose CHI for Source 5 6 Press the F5 menu selection button and choose AC for Coupling The display in the screen is as Fig 28 7 Press the F2 menu selection button again and choose Falling for Slope For the screen display see Fig 29 43 trig d M Pos 0 000ns TRIG MODE Type Edge 7 Source iD Aree Gee Scere A PAIS PA Se od ero E SL TAC A Na WA 4 CH1 Mode Auto Coupling DC CHI 10v CH2 50 0mu M 500us CH1 0 00 divs 0 0mv Fig 28 Wave Form Triggered on the Rising Edge Iig d M Pos 0 000ns TRIG MODE Type Edge Slone me Source CH1 Mode Autol Coupling AC N CHI 400mu CH1 10u CH2 50 0Omu M 500us Fig 29 Wave Form Triggered on the Falling Edge 44 6 11 Video Trigger After choosing Video Trigger a trigger is possible in field or line of NTSC PAL or SECAM standard video signal The operation menu of Video Trigger is shown as Fig 30 TRIG MODI Fig 30 Video Trigger Menu The description of the Video Trigger menu is shown the following table Function Menu Setting Description Polarity Normal Applicable to the video signal of low black level Inverted Applicable to the video signal of high black level Source CHI Set Channel 1 as the trigger signa
4. The Warranty described above is Buyer s sole and exclusive remedy and no other warranty whether written or oral is expressed or implied Aplab specifically desclaims the implied warranties of merchantability and fitness for a particular purpose No statement representation agreement or understanding oral or written made by an agent distributor representative or employee of Aplab which is not contained in the foregoing Warranty will be binding upon Aplab unless made in writing and executed by an authorized Aplab employee Under no circumstances shall Aplab be liable for any direct indirect special incidental or consequential damages expenses losses or delays including loss of profits based on contract tort or any legal theory 5 1 5 2 5 3 5 4 HI 5 6 5 7 5 8 5 9 5 10 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 6 11 6 12 6 13 6 14 6 15 Table of Contents General Safety Reguirements ooooocooooooooooooooooooooooooooooooo 6 Safety Terms and Symbols ooooooooooo ooooooooooooooooooooooooooooooooooooooooo 7 General Features of the 36025D Color Digital Storage Oscilloscope 8 Technical Specifications iscecssccssesssssoosseasessecssosavenscoseossvssssasorsoeasesscsssdesveseueavecssass 9 Getting Started A A ria 13 User Interface Front Panel Controls and Functions 14 General Inspection air DR Aia 18 Function Inspection it A esis a aan Aa 19 Probe Compensation
5. Before making any measurements please connect the probe to the instrument and connect the ground terminal to the earth 23 5 7 Auto calibration The auto calibration application can make the oscilloscope reach the optimum condition rapidly to obtain the most accurate measurement value You can carry out this application program at any time but when the range of variation of the ambient temperature is up to or over 5 degree C this program must be executed For the performing of the self calibration all probes or wires should be disconnected with the input connector first Then press the UTILITY button to call out the FUNCTION menu push down the F3 menu selection button to choose the option Do Self Cal finally run the program after confirming that everything is ready now 24 5 8 Vertical System Please refer to Fig 11 there are a series of buttons and knobs in VERTICAL CONTROLS The following practices will gradually direct you to get familiar with the using of the vertical setting Fig 11 Vertical Control Zone 1 Use the button VERTICAL POSITION knob to show the signal in the center of the waveform window The VERTICAL POSITION knob function is to adjust 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 wave form Measurement If the channel is un
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7. Press the CH1 MENU button and call out the CH1 SETUP menu 2 Press the F1 menu selection button and select the Coupling item as AC to set the channel coupling in AC mode under which the direct current component in the signal will be blocked Then press the F1 menu selection button again and select the Coupling item as DC setting the channel coupling in de mode under which both dc and ac components in the signal will be unblocked The wave forms are shown as Fig 15 and Fig 16 30 vig d M Pos 0 000ns CH1 SETUP Coupling Channel ON Probe 1 YI Lnverted OFF CHI 2 00y7 CH2 50 0mu M 500us CH1 2 48u Fig 15 An AC Coupled Oscillogram Trig d M Pos 0 000ns CH1 SETUP 7 Coupling bg Channel ON Probe 1 XI Lnverted OFF CH1 2 00u CH2 50 0mu M 500us CH1 2 48u Fig 16 DC Coupled Oscillogram 31 2 Setting the Channel ON OFF Taking the Channel 1 for example the operation steps are shown as below 1 Press the CH1 MENU button and call out the CH1 SETUP menu 2 Press the F2 menu selection button and select the Channel as OFF with Channel switched off 3 Press F2 menu selection button again select the channel as ON with Channel 1 is switched on Adjusting the Attenuation Ratio of the Probe In order to match the attenuation coefficient of the probe it is required to adjust the attenuation ratio coefficient of the probe throu
8. 1 e CD 1 for linstruction Manual and S W for PC communication e Power line one up to the standards of the country in which it is used User s Manual One Options e RS232 data line or USB data line cabels Optional O Battery 5 Getting Started This chapter deals with the following topics mainly Introduction to the front panel user interface controls of the Oscilloscope The general inspection The functional inspection Probe Compensation Setting the probe attenuation coefficient The probe safety Auto calibration The vertical system The horizontal system The trigger system 5 1 Use Interface Front Panel Controls and Functions Whenever you get a new type oscilloscope you should first get acquainted with its front panel and the 36000D series digital storage oscilloscope is no exception This chapter describes the operations and functions of the front panel controls of the Oscilloscope enabling you to be familiar with the use of the Oscilloscope in the shortest time The Oscilloscope offers a simple front panel controls with distinct functions to users for their completing some basic operations in which the knobs and function pushbuttons are included The knobs have the functions similar to other Oscilloscopes The 5 buttons in the column on the right side of the display screen are menu selection buttons defined as F1 to FS from top to bottom respectively through which you can set the
9. ACQUIRE UTILITY CURSOR DISPLAY AUTOSET RUN STOP and HARDCOPY 6 13 Sampling Setup Press the ACQUIRE button and the menu is displayed in the screen shown as Fig 33 ACQU MODI Fig 33 ACQU MODE Menu The description of the Sampling Setup Menu is shown as follows Function Menu Setting Description Sampling General sampling mode Peak Detection It is used for the detection of the jamming burr and the possibility of reducing the confusion Average value It is used to reduce the random and don t care noises with the optional number of averages Averages 4 16 64 Choose the number of averages 128 48 Change the ACQU Mode settings and observe the consequent variation of the wave form displayed M Pos 280 0us ACC Ji J MODI Fig 34 Peak Detect mode under which the burrs on the falling edge of the square wave can be detected and the noise is heavy 49 Trig d M Pos 280 0us ACQU MODE nn HB Peak Detect Average Averages 16 CH1 500mu CH2 20v M 500us CH1 1 34u Fig 35 Common ACQU Mode display in which no burr can be detected Trig d M Pos 280 0us ACQU MODE Sample Peak Detect Averages ro CHI 500mu CH2 Z0u M 500us CH1 1 34v Fig 36 The displayed wave form after the noise is removed under the Average Mode in which the average number of 64 is set 50 6 14 Display System Push down the DISPLAY button and th
10. DIV knob is used to regulate the vertical resolution of the wave forms of all channels including those obtained from the mathematical manipulation which can determine the sensitivity of the vertical division with the sequence of 1 2 5 The vertical sensitivity goes up when the knob is rotated clockwise and goes down when the knob is rotated anticlockwise When the vertical position of the channel wave form is adjusted the screen shows the information concerning the vertical position at the lower left corner see Fig 21 M Pos 0 000ns MEASURI 11 1 00 divs 20 00v Fig 21 Information about Vertical Position 36 6 4 Horizontal System The HORIZONTAL CONTROLS includes the HORIZONTAL NENU button and such knobs as HORIZONTAL POSITION and SEC DIV 1 HORIZONTAL POSITION knob this knob is used to adjust the horizontal positions of all channels include those obtained from the mathematical manipulation the analytic resolution of which changes with the time base 2 SEC DIV knob it is used to set the horizontal scale factor for setting the main time base or the window 3 HORIZONTAL NENU button with this button pushed down the screen shows the operating menu see Fig 22 Fig 22 Time Base Mode Menu The description of the Horizontal Menu is as follows Function Menu Setting Description Main Time Base The setting of the horizontal main time base is used to display the wave form Window Setup A w
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13. be chosen 1sec 2sec 5sec Infinite and Closed When the Infinite option is set for Persist time the measuring points will be stored till the controlling value is changed see Fig 40 M Pos 0 000ns Fig 40 Infinite Persistence Display 6 16 XY Format This format is only applicable to Channel 1 and Channel 2 After the XY display format is selected Channel 1 is displayed in the horizontal axis and Channel 2 in the vertical axis the oscilloscope is set in the untriggered sample mode the data are displayed as bright spots and the sampling rate is 1MS s and can not be changed The operations of all control knobs are as follows E The Vertical VOLTS DIV and the Vertical POSITION knobs of Channel lare used to set the horizontal scale and position EH The Vertical VOLTS DIV and the Vertical POSITION knobs of Channel 2 are used to set the vertical scale and position continuously 54 The following functions can not work in the XY Format Reference or digital wave form Cursor Auto Set Time base control Trigger control Operation steps 1 Press the DISPLAY button and call out the Display Set Menu 2 Press the F3 menu selection button and choose the form as XY The display format is changed to be XY mode see Fig 41 M Pos 0 000ns Fig 41 XY Display Mode 55 6 17 How to Save and Recall a Wave Form Press the SAVE REL button you can save and call out the wave forms in the instrument The menu disp
14. in the screen changes 3 Press the button SET TO 50 to set the trigger level as the vertical mid point values of the amplitude of the trigger signal 4 Press the FORCE TRIG button to force a trigger signal which is mainly applied to the Normal and Single trigger modes 5 The TRIG VIEW SET TO ZERO button is used to reset the trigger horizontal position 27 6 Operation Now that you have already become familiar with the initial operations of VERTICAL CONTROLS HORIZONTAL CONTROLS and TRIGGER CONTROLS and the functions of the function areas buttons and knobs in the front panel of the Oscilloscope Based on familiarisation of the previous Chapter the user should have now intimate knowledge of the determination of the change of the oscilloscope setting through observing the status bar If you have not been familiar with the above mentioned operations and methods yet we advise you to read the section of First time operation again This chapter will deal with the following topics mainly How to Set the Vertical System How to Set the Horizontal System How to Set the Trigger System How to Carry on the Sampling Setup How to Set the Display System How to carry out the Store and Recall Operations How to Carry on the Auxiliary Function Setting How to Carry on the Automatic Measurement How to Carry on the Cursor Measurement How to Use Executive Buttons It is recommended that
15. namely the channel connector Check whether the probe is properly connected with the object to be measured O 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 O Make the signal acquisition operation again 3 The measured voltage amplitude value is 10 times greater or smaller than the actual value Check whether the channel attenuation coefficient conforms with the attenuation ration of the probe used in practical application 4 There is wave form displayed but it is not stable Check whether the Source item in the TRIG MODE menu is in conformity with the signal channel used in the practical application O Check on the trigger Type item The common signal chooses the Edge trigger mode for Type and the video signal the Video Only if a proper trigger mode is applied the wave form can be displayed steadily Try to change the trigger coupling into the high frequency suppress and the low frequency suppress to smooth the high frequency or low frequency noise triggered by the interference No Display Responses to the Push down of RUN STOP Check whether Normal or Signal is chosen for Polarity in the TRIG MODE menu and the trigger level exceeds the wave form range If it is make the trigger level is centered in the screen or set the trigger mode as Auto In addition with the AUTO
16. the input signal edge When the Edge Trigger is selected a trigger will occur in the rising or falling edge of the input signal The Edge Trigger Menu is shown as Fig 27 TRIG MODI Fig 27 Edge Trigger Menu 42 The Edge Trigger Menu is described as below Function Menu Setting Description Slope Rising Set a trigger on the rising edge of the signal Falling Set a trigger on the falling edge of the signal Source CHI Set Channel 1 as the trigger signal of the source CH2 Set Channel 2 as the trigger signal of the source EXT Set the external trigger channel as the trigger signal of the source EXT 5 Divide the External Trigger Source by 5 to expand the external trigger level range Mode Auto Collect the wave form even if there is not trigger condition is detected Normal Collect the wave form only when the trigger condition is fulfilled Single Collect a wave form when a trigger is detected then stop sampling Coupling DC Block the direct current component AC Unblock all components HF Rjc Block the high frequency signal and only unblock the high frequency component LF Rjc Block the low frequency signal and only unblock the low frequency component Make such settings in Channel 1 as Rising for Slop Auto for Mode and DC for Coupling The operation steps are as follows 1 Press the TRIG MENU button and call out the trigger menu Press the F1 menu selection button and select Edge for Type
17. the channel Trigger Show the parameters of the trigger system Misc Adjust the Date and Time After entering into the SYS STAT menu choose the corresponding function with the corresponding parameters shown in the screen If press the F1 menu selection button and choose the function item Horizontal the Horizontal System State will be displayed in the screen Press any other function button and exit from the SYS STAT menu see Fig 47 M Pos 0 000ns HORIZONTAL SYSTEM STATUS TIME BASE MAIN TIME BASE MAIN SCALE 500us WINDOW SCALE 25 us MAIN POSITION 0 000ns WINDOW POSITION Os DISPLAY FORMAT YT ACQUIRE MODE SAMPLE CH1 0 00mu Fig 47 Horizontal System State 60 6 22 How to Conduct the Automatic Measurement With the Measure button pressed down an automatic measurement can be implemented There are 5 types of measurements and 4 measurement results can be displayed simultaneously Press the F1 menu selection button to choose Source or Type menu You can choose the channel to be measured from the Source menu and choose the measurement Type Freq Cycle Mean PK PK RMS and None The menu is displayed as Fig 48 MEASURI Fig 48 Measure Menu 6 23 Measure Four automatic measured values can be shown one time at maximum for the wave form of each channel Only if the wave form channel is in the ON state can the measurement be carried out No automatic measurement can be made for the saved or the mathe
18. which equals 0 in the screen center 5 This reading shows the time deviation between the horizontal trigger position and the window centre line which is regarded as 0 in the window center 6 It indicates the current function menu 7 It indicates the operation options for the current function menu which changes with the function menus 8 The purple pointer shows the trigger level position 9 The reading shows the trigger level value 10 The reading shows the trigger source 11 It shows the selected trigger type Rising edge triggering AY Falling edge triggering ae Video line synchronous triggering wi Video field synchronous triggering 12 The reading shows the window time base set value 13 The reading shows the main time base set value 14 The two yellow dotted lines indicate the size of the viewing expanded window 15 The icon shows the coupling mode of the CH2 channel 16 LA 18 19 20 21 22 23 indicates the direct current coupling e indicates the AC coupling The reading shows the vertical scale factor the Voltage Division of the CH2 channel The icon indicates the coupling mode of the CH1 channel The icon indicates the direct current coupling The icon indicates the AC coupling The reading indicates the vertical scale factor the Voltage Division of the CHI channel The information shows the zero point positions of CHI or CH2 channel The yel
19. you read this chapter carefully to get acquainted the various measurement functions and other operation methods of the Oscilloscope 28 6 1 Vertical System The VERTICAL CONTROLS includes three menu buttons such as CH1 MENU CH2 MENU and MATH MENU and four knobs such as VERTICAL POSITION VOLTS DIV one control group for each of the two channels Setting of CH1 and CH2 Every channel has an independent vertical menu and each item is set respectively based on the channel With the CH1 MENU or CH2 MENU menu button pushed down the system shows the operation menu of the corresponding channel see Fig 14 Fig 14 Channel Setting Menu 29 The description of the Channel Menu is shown as the following list following form Function Menu Setting Description Coupling AC Blocks the DC and allows AC components in the input signal DC Allows the AC DC component in the input signal Channel OFF Closes the perticular measurement channel ON Opens the particular measuring channel Probe 1X Chooses one according to the probe attenuation factor to make the vertical scale 10X reading accurate 100X 1000X Inverted OFF The wave form is displayed normally ON Initiate the wave form inverted function 1 Setting Channel Coupling Taking the Channel 1 for example the measured signal is a square wave signal containing the direct current bias The operation steps are shown as below 1
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21. C PAL and SECAM broadcast system of any field frequency of line frequency Measurement Cursor Measurement Voltage difference V and time difference T between cursors Automatic Peak to Peak Value Average RMS Frequency and Measurement Cycle Probe 1X Position 10X Position Bandwidth DC up to 4 MHz DC up to full bandwidth Attenuation Ratio 1 1 10 1 Compensation Range 10pf 35pf Input Resistance IMQ 2 1OMQ 2 Input Electric Capacity 85pf 115pf 14 5pf 17 5pf Input Voltage 150 V DC 300 V DC General Technical Specifications Display Display Type 7 8 Color LCD Liquid Crystal Display Display Resolution 640 Horizontal x 480 Vertical Pixels Display Colors 256 Colors Output for Probe Compensation Output Voltage About 5V with the Peak to Peak value equal to or greater Typical than IMQ of load Frequency Typical Square wave of 1KHz Power Mains Voltage 100 240 VAC RMS 50Hz CAT II Power Consumption lt 15W Fuse 1A T grade 250V Environment Temperature Working temperature 0 40 Storage temperature 20 60 Relative Humidity lt 90 Height Operating 3 000 m Non operating 15 000 m Cooling Method Natural convection Mechanical Specifications Dimension Weight 350mm 157mmx 120mm 1 4 kilogram Standard Accessories Passive probe 2 1 2 m 1 1 10
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23. SET button pressed the setting above can be completed automatically After the AVERAGE value sampling is set in the ACQU MODE or the a longer duration is set in the DISP MODE the display rate is slowed down It is anormal phenomenon 68 9 Battery Using Guide Battery electric quantity indicating symbols including MA ana fl Charging the oscilloscope Batteries The lithium battery maybe not be charged when delivery Please charge the battery for 12 hours to make sure to connect the power to supply the oscilloscope should be turned on during charging to oscilloscope The battery can supply power for 4 hours after being charged completely There will have battery power indication show on the top of panel when oscilloscope power supplied by the battery A E a and O imply for different power consumption and when i shows it means the power can only supply for 5 minutes maximum Note To avoid overheat of battery during charging the environment temperature is not allowed to exceed the permissible value given in technical specification Replacing the Lithium Battery Unit It is usually not required to replace the battery unit But when it is required to replace it only qualified personnel can carry out this operation and only use the same specification lithium battery 69 10 APLAB SALES amp SERVICE CENTRES WESTERN REGION MUMBAI A B BHANAGE Mobile 9821038368 Deodhar Centre 424 Marol Maroshi Road Andheri East
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25. T Button The square wave of 1 KHz frequency and 5V peak peak value will be displayed in several seconds see Fig 6 M Pos 0 000ns TRIG MODI Fig 6 Autoset Check CH2 by repeating Step 2 and Step 3 20 5 4 Probe Compensation Whenever you connect the probe with any input channel for the first time make this adjustment to match the probe with the input channel The probe which is not compensated adjusted will result in the measuring error or mistake For adjusting the probe compensation please carry out the following steps 1 Set the attenuation coefficient of the probe in the menu as 10X and that of the switch in the probe as 10X and connect the oscilloscope probe with the CHI 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 and connect the reference wire clamp with the ground wire connector of the probe connector and then press the button AUTOSET see Fig 5 2 Check the displayed wave forms and adjust by plastic screw driver provided with the probe till a correct compensation is achieved see Fig 7 and Fig 8 Overcompensated Compensated correctly Under compensated Fig 7 Displayed Wave Forms of the Probe Compensation 3 Repeat the steps mentioned if necessary Fig 8 Adjust Probe 21 5 5 Setting the Probe Attenuation Coefficient The probe has several attenuation coefficients which wil
26. User Manual Portable Colour Digital Storage Oscilloscope 36025D www aplab com Portable Colour Digital Storage Oscilloscope Model 36025D WARRANTY Aplab warrants that all products manufactured by Aplab conform to published Aplab specifications and are free from defects in materials and workmanship for a period of one year from the date of despatch when used under normal operating conditions and within the service conditions for which they were furnished The obligation of Aplab arising from a Warranty claim shall be limited to repairing or at its option replacing without charge any product which in Aplab s sole opinion proves to be defective within the scope of the Warranty Aplab must be notified in writing of the defect or nonconformity within the Warranty period and the affected product returned to Aplab s factory or to an authorized service center within 30 days after discovery of such defect or nonconformity For products warranties requiring return to Aplab products must be returned to a service facility designated by Aplab Aplab shall have no responsibility hereunder for any defect or damage caused by improper storage improper installation unauthorized modification neglect inadequate maintenance accident or for any product which has been repaired or altered by anyone other than Aplab or its authorized representative and not in accordance with instructions furnished by Aplab EXCLUSION OF OTHER WARRANTIES
27. der the DC coupling mode you can rapidly measure the DC component of the signal through the observation of the difference between the wave form and the signal ground If the channel is under the AC mode the DC component will be removed by filtration This mode helps you display the AC component of the signal with a higher sensitivity 2 Change the vertical setting and observe the consequent state information change With the information displayed in the status bar at the bottom of the waveform window you can determine any changes in the channel vertical scale factor O Rotate the vertical VOLTS DIV knob and change the Vertical Scale Factor Voltage Division it can be found that the scale factor of the channel corresponding to the status bar has been changed accordingly O Press buttons of CH1 MENU CH2 MENU and MATH MENU the operation menu symbols wave forms and scale factor status information of the corresponding channel will be displayed in the screen 25 5 9 Horizontal System Please refer to Fig 12 there are a button and two knobs in the HORIZONTAL CONTROLS The following practices will gradually direct you to get familiar with the setting of horizontal time base POSITION Fig 12 Horizontal Control Zone 1 Use the horizontal SEC DIV knob to change the horizontal time base setting and observe the consequent status information change Rotate the horizontal SEC DIV knob
28. different options for the current menu The other pushbuttons are function buttons through which you can enter different function menus or obtain a specific function application directly Fig 1 The Front Panel of a Digital Storage Oscilloscope Function Buttons 14 di SW NREL O UTILITY O qb Oi 5 5 db Oi 5 GIO 4 00000 0 O O o 8 8 a Pp azz gt D i ul 20 Fig 3 Illustrative Drawing of Display Interfaces 1 The Trigger State indicates the following information Auto The oscilloscope is under the Automatic mode and is collecting the waveform under the non trigger state Trig d The oscilloscope has already detected a trigger signal and is collecting the after triggering information Ready All pre triggered data have been captured and the oscilloscope has been already ready for accepting a trigger Scan The oscilloscope captures and displays the waveform data continuously in the scan mode Stop The oscilloscope has already stopped the waveform data acquisition 2 Waveform Viewing Area 3 The purple pointer indicates the horizontal trigger position which can be adjusted by the horizontal position control knob 4 The reading shows the time deviation between the horizontal trigger position and the screen centre line
29. e 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 Clean the instrument with a wet soft cloth not dripping water during the period of which please pay attention to the disconnection of power It is recommended to scrub with soft detergent or fresh water Please don t apply any corrosive chemical cleaning agent to prevent the instrument or probe from damage YA ca Before power on again for operation it is required to confirm that the instrument has already been dried completely avoiding any electrical short circuit or bodily injury resulting form the moisture 67 8 Fault Diagnosis 1 In the case of that the oscilloscope is still in the black screen state without any display after the power is switch on implement the following fault treatment procedure Check whether the power connection is connected properly Check whether the power switch is pushed down to the designated position O Restart the instrument after complete the checks above e If this product still can not work normally please get in touch with Aplab and we will be under your service After acquiring the signal carry out the following operations if the wave form of the signal is not displayed in the screen Check whether the probe is properly connected to the signal connecting wire O Check whether the signal connecting wire is correctly connected to the BNC
30. e menu displayed in the screen is shown as Fig 37 Fig 37 Display Set Menu The description of the Display Set Menu is shown as follows Function Menu Setting Description Type Vectors The space between the adjacent sampling points in the display is filled with the vector form Dots Only the sampling points are displayed Persist OFF Set the persistence time for each sampling point 1sec 2sec Ssec Infinite Format YT Show the relative relation between the vertical voltage and the horizontal time XY Channel 1 is displayed on the horizontal axis and Channel 2 on the vertical axis Carry Bitmap The data transmitted in communication are in the bitmap form Vectors The data transmitted in communication are in the vector form 51 Display Type With the F1 menu selection button pushed down you can shift between Vectors and Dots types The differences between the two display types can be observed through the comparison between Fig 38 and Fig 39 0 000ns DISP SET NX CH1 640mu Fig 38 Display in the Vector Form 52 M Pos 0 000ns IS p S 1 N CHI 640mu Fig 39 Display in Dots form 53 6 15 Persistence 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 With the F2 menu selection button different persistence time can
31. function items of AUTOSET are shown as the following table Function Items Setting Acquisition Mode Current Vertical Coupling DC Vertical Scale Adjust to the proper division Bandwidth Full Horizontal Level Middle Horizontal Sale Adjust to the proper division Trigger Type Current Trigger Source Show the minimum number of channels Trigger Coupling Current Trigger Slope Current Trigger Level Mid point Setting Trigger Mode Auto Display Format YT RUN STOP Enable or disable the waveform sampling Notice Under the Stop state the vertical division and the horizontal time base of the wave form can be adjusted within a certain range in other words the signal can be expanded in the horizontal or vertical direction When the horizontal time base equal to or is less than 50ms the horizontal time base can be expanded for 4 divisions downwards 66 7 Maintenance Cleaning and Repairing General Maintenance Please don t store or put the instrument in the place where the liquid crystal display will be directly exposed to the sunlight for a long time Caution The instrument or probe should not be stained with the spraying agent liquid and solvent to avoid any damage to it Cleaning Check the probe and instrument regularly according to their operating state Clean the external surface of the instrument following the steps shown as below 1 Please wipe the dust from th
32. gh the operating menu of the Channel accordingly If the attenuation coefficient of the probe is 1 1 that of the oscilloscope input channel should also be set to 1X to avoid any errors presented in the displayed scale factor information and the measured data Take the Channel as an example the attenuation coefficient of the probe is 1 1 the operation steps is shown as follows 1 Press the CH1 MENU button access CHI SETUP menu 2 Press the F3 menu selection button and select 1X for the probe The Figure 17 illustrates the setting and the vertical scale factor when the probe of the attenuation coefficient of 1 1 is used s 0 000ns Fig 17 Adjusting the Attenuation Ratio of the Probe 32 A List of the Attenuation Coefficients of Probes and the Corresponding Menu Settings Attenuation Coefficient of the Probe Corresponding Menu Setting 1 1 1X 10 1 10X 100 1 100X 1000 1 1000X 5 Setting of Inverted Wave Form In the wave form inverted the displayed signal is turned 180 degrees against the phase of the earth potential Taking the Channel for example the operation steps are shown as follows 1 Press the CH1 MENU button and get access to the CH1 SETUP menu 2 Press the F4 menu selection button and select ON in the Lnverted The wave form inverted function is initiated 3 Press the F4 menu selection button again and select OFF for Lnverted item The function of wave form inver
33. in touch with the APLAB s distributor responsible for this business or the APLAB s local offices If there is damage to the instrument caused by the transportation please keep the package intact for retransport Please inform to the Service logistics department or the APLAB s distributor region responsible for this business A repairing or replacement of the instrument will be arranged by the APLAB 5 3 Function Inspection Make a fast function check to verify the normal operation of the instrument as per following steps 1 Connect the Instrument to the Power and Push down the Power Switch Button The instrument carries out all self check items and shows the prompt Press any Key to Enter the Operating Mode Press the UTILITY button to get access to the FUNCTION menu and push down F2 the menu selection button to call out the function Recall Factory The default attenuation coefficient set value of the probe in the menu is 10X shown as Fig 4 Fig 4 Power on the Instrument 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 then tighten the probe with rotating it to the right side Connect the probe tip and the ground clamp to the connector of the probe compensator shown as Fig 5 Probe comp CHI Fig 5 Connection of the Probe 3 Press the AUTOSE
34. indow area is defined by two cursors Window The defined window area for display is Expansion expanded to the full screen 6 5 Main Time Base Press the F1 menu selection button and choose the Main Time Base In this case the HORIZONTAL POSITION and SEC DIV knobs are used to adjust the main window The display in the screen is shown as Fig 23 M Pos 0 000ns TIME MODI 1 400mu Fig 23 Main Time Base 38 6 6 Window Setting Press the F2 menu selection button and choose Set Window The screen will show a window area defined by two cursors In this case the HORIZONTAL POSITION and SEC DIV knobs can be used to adjust the horizontal position and size of this window area see Fig 24 M Pos 0 000ns U 0 000ns TIME MODI Fig 24 Window Setting 39 6 7 Window Expansion Press the F3 menu selection button and choose Zone Window As a result the window area defined by two cursors will be expanded to the full screen size see Fig 25 M Pos 0 000ns U 0 000ns TIME MODI 400mu Fig 25 Zone Window 40 6 8 Trigger System When the oscilloscope begins to collect the data and display the wave form depends on a trigger Once it is set correctly the trigger can transfer the unstable display into a meaningful wave form When beginning to collect data the oscilloscope will collect adequate data to draw the wave form at the left side of the trigger point at first It will continuously perform the data acquisiti
35. l influence the vertical scale factor of the oscilloscope If it is required to change check the set value of the probe attenuation coefficient press the function menu button of the channels used then push down the selection button corresponding to the probe till the correct set value is shown This setting will be valid all the time before it is changed again N Note The attenuation coefficient of the probe in the menu is preset to 10X when the oscilloscope is delivered from the factory Make sure that the set value of the attenuation switch in the T5100 probe is the same as the menu selection of the probe in the oscilloscope The set values of the probe switch are 1X and 10X see Fig 9 Fig 9 Attenuation Switch A Note When the attenuation switch is set to 1X the T5100 probe will limit the bandwidth of the oscilloscope up to SMHz If it is needed to use the whole bandwidth of the oscilloscope the switch must be set to 10X 22 5 6 Probe Safety The safety guard ring around the probe body protects your finger against the electric shock shown as Fig 10 Fig 10 Finger Guard Za Warning In order to avoid suffering from the electric shock please keep your finger behind the safety guard ring of the probe body during the operation In order to protect you from suffering from the electric shock during your using the probe do not touch the metal part of the probe tip when the probe is connected to the power supply
36. l of the source CH2 Set Channel 2 as the trigger signal of the source EXT Set the external input channel as the trigger signal of the source EXT 5 Divide the external trigger source by 5 and expand the external trigger level range Sync Line Set a trigger synchronization in the vide line Field Set a trigger synchronization in the video field 45 The operation steps for setting Channel in Video Trigger Mode are as below Ts 2 3 4 5 Press the TRIG MENU button and get access to the trigger menu Press the F1 menu selection button and choose Video for Type Press the F2 menu selection button and choose Normal for Polarity Press the F3 menu selection button and choose CHI1 for Source Press the F4 menu selection button and choose Field for Sync The screen display is shown as Fig 31 Press the F4 menu selection button again and choose Line for Slope The screen display is shown as Fig 32 46 Trig d M Pos 280 0us TRIG MODE Type Video Polarity Normal Source CH1 Sync CH1 5v CH2 20v M Z00us wg CH1 All CH1 0 72divs 3 60v Fig 31 Wave Form Triggered in the Video Field ig d M Pos 0 000ns TRIG MODE Type Video Polarity Normal Source CH1 Sync CHI 5u CH2 20u M 20 us ESTOS Fig 32 Wave Form Triggered in the Video Line 47 6 12 Function Menu The function menu control zone includes 6 function menu buttons and 3 immediate execution buttons SAVE REL MEASURE
37. layed in the Cursor2 window see Fig 51 CH1 400mu Fig 51 Wave Form of Voltage Cursor Measurement 64 Carry out the following operation steps for the time cursor measurement of the channel CHI 1 Press CURSOR and recall the CURS MEAS menu 2 Press the F1 menu selection button and choose Time for Type with two purple dotted lines displayed along the vertical direction of the screen which indicating Cursor 1 and Cursor 2 3 Press the F2 menu selection button and choose CHI for Source 4 Adjust the positions of CURSORI and CURSOR2 according to the measured wave form with the cycle and frequency of Cursorl and Cursor 2 displayed in the increment window The current position of Cursorl is displayed in the Cursor window and that of Cursor2 is displayed in the Cursor2 window see Fig 52 Trig d M Pos 0 000ns CURS MEAS A Type Source CH1 Delta 1 163KHZ 0 860ms pte Fe ARA AA AA CROACIA CA TAC Cursor 1 0 000ns nh hn Dn 00 0 860ms CHI 10v CH2 50 0mu M 500us CH1 400mu Fig 52 Wave Form of Cursor Measurement 65 6 26 Execution Controls The execution buttons include AUTOSET RUN STOP and HARDCOPY 6 27 AUTOSET This button is used for the automatic setting of all control values of the instrument to generate the wave form suitable for observation Press the AUTOSET button and the oscilloscope will perform the fast automatic measurement of the signal The
38. layed in the screen is shown as Fig 42 Fig 42 Wave Form Save Menu The description of the Wave Form Save Menu is shown as the following table Function Menu Setting Description Source CHI Choose the wave form to be saved CH2 MATH WAVE A B Choose the address in or from which the C D waveform is saved or can be get access to Save Save the wave form of the source in the selected address CHA OFF Switch on or off the display of the stored ON wave form 56 6 18 Save and Recall the Wave Form The Oscilloscope can store four wave forms which can be displayed with the current wave form at the same time The stored wave form called out can not be adjusted In order to save the wave form of the channel CHI into the address A the operation steps should be followed 1 Press the F1 menu selection button and choose CH1 for Source 2 Press the F2 menu selection button and choose A for Wave 3 Press the F3 menu selection button and save the wave form 4 Press the F4 menu selection button and choose ON for CHA The stored wave form A will be displayed in the screen The voltage level and time base level will also be shown at the upper left corner of the display area at the same time see Fig 43 0 000n CH1 0 00mu 1 1 60 divsi 32 00v Fig 43 Wave Saving 57 6 19 How to Carry on the Auxiliary System Function Setting Press the UNTILITY button and the menu is displayed in the sc
39. low pointer shows the grounding datum point zero point position of the waveform of the CH2 channel If the pointer is not displayed it shows that this channel is not opened The red pointer indicates the grounding datum point zero point position of the waveform of the CHI channel If the pointer is not displayed it shows that the channel is not opened The positions of two purple dotted line cursors measurements 5 2 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 complete tests on the unit for the electrical and mechanical properties and its accessories 2 Check the Accessories The supplied accessories have been already described in the Appendix B Accessories of this Manual You can check whether there is any loss of accessories 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 APLAB responsible for this service or the APLAB s 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
40. matically manipulated wave form or in the XY or Scan format Measure the frequency the peak to peak value of the Channel CH1 and the mean the RMS of the Channel CH2 according the following steps 61 1 Press the F1 menu selection button and choose Source Press the F2 menu selection button and choose CHI Press the F3 menu selection button and choose CHI Press the F4 menu selection button and choose CH2 Press the F5 menu selection button and choose CH2 2 3 4 5 6 Press the F1 menu selection button and choose Type 7 Press the F2 menu selection button and choose Freq 8 Press the F3 menu selection button and choose Pk Pk 9 Press the F4 menu selection button and choose Mean 10 Press the F5 menu selection button and choose Cyc RMS The measured value will be displayed in the reading window automatically see Fig 49 MEASURI Fig 49 Automatic Measurement 62 6 24 How to Carry on the Cursor Measurement Press the CURSOR button to display the cursor measurement function menu CURS MEAS in the screen which Measurement shown as Fig 50 CURS MEAS includes Voltage Measurement and Time Fig 50 CURS MEAS Menu The description of the cursor measurement menu is shown as the following table Function Menu Setting Description Type OFF Voltage Time Switch off the cursor measurement Display the voltage measurement cursor and menu Show time measures the cursor and me
41. note statement indicates the conditions and actions which may cause Terms on the product The following terms may appear on this product Danger It indicates that there may be an immediate injury to you when you encounter this mark Warning It indicates that there may not be an immediate injury to you when you encounter this mark Note It indicates that there may be damage to this product or other property Symbols on the products The following symbol may appear on the products A A mm High Voltage Please refer the Manual Protective Ground End Grounding End for Measurement Earth End on the Shell 3 General Features of the 36025D Color Digital Storage Oscilloscope The bandwidth of 25MHz for each Channel Record length of 6 000 points for each channel Sampling rates of 100MS s for each channel Read out with the cursors Five automatic measurement functions Color liquid crystal display LCD of high resolution and high contrast with adjustable back light Storage and Recall of waveforms Automatic setting function capable of fast setting MATH function for multiple waveform calculation Detection of the average and peak values of the waveform Digital real time Sampling oscilloscope Edge and video triggering function Built in RS232 and USB communication ports User friendly with English language Built in Li ion rechargeable battery charger Battery Operation 4 Technical Specifications Only if the oscillosc
42. nu Source CHI CH2 Choose the channel generating the wave form to which the cursor measurement will be applied Delta Read the difference between cursors Cursor Read the position of Cursor the Time is read with reference to the horizontal trigger position and the Voltage is to the ground point Cursor 2 Read the position of Cursor the Time is read with reference to the horizontal trigger position and the Voltage is to the ground point 63 6 25 Cursor Measurement When carrying out the cursor measurement the position of Cursor can be adjusted with the CURSOR1 VERTICAL POSITION knob of Channel 1 and that of Cursor 2 can be adjusted with the CURSOR2 VERTICAL POSITION knob of Channel 2 Perform the following operation steps for the voltage cursor measurement of the channel CHI 1 Press CURSOR and recall the Curs Meas menu 2 Press the F1 menu selection button to choose Voltage for Type with two purple dotted lines displayed along the horizontal direction of the screen which indicating CURSOR1 and CURSOR2 3 Press the F2 menu selection button and choose CHI for Source 4 Adjust the positions of CURSOR1 and CURSOR2 according to the measured wave form with the absolute value of the voltage amplitude difference between Cursor and Cursor 2 displayed in the increment window The current position of Cursor is displayed in the Cursor window and that of Cursor2 is disp
43. ock risks please pay attention to all the limiting values and marks of this product Before any connections for this product please read the user s manual of this product to understand the information about the rated values Do not make any operations without the instrument cover installed If the cover or panel has already been removed please don t operate this product Use the proper fuse Only the fuse complying with the specified type and nominal value for this product can be used Avoid touching any exposed circuit When the product is on power please don t touch the uncovered contacts and parts Please don t make any operations when you have observed an uncertain fault In case of any damage to this product observed please contact the qualified maintenance personnel for check up Operate in a good ventilated atmospheric condition Please read carefully the detailed installation instructions in the user s manual so that this product can be used correctly Always operate it in a good ventilated atmosphere Please do not make any operations in a moist environment Please do not make any operations in an explosive environment Keep the products surface clean and dry 2 Safety Terms and Symbols Terms in this manual The following terms may appear in this manual A Warning A warning statement indicates the conditions and actions which may endanger the life safety A damage to this product or other property Note A
44. on SmV div 5V div at the input BNC Range V div Displacement Range 10div SmV SV Simulative Bandwidth 25M Single Bandwidth Full Bandwidth Low frequency respond AC SHz at BNC Coupling 3dB Rising Time Typical at lt 17 5ns BNC DC Gain Accuracy 5 The voltage difference V between any two DC Measuring Accuracy Average for ACQU MODE points on the wave form after averaging the captured wave forms of more than 16 5 Reading 0 05 divisions Trigger Trigger Sensitivity DC Coupling Channel 1 and Channel 2 Idiv DC Edge Trigger Full Bandwidth EXT 100mV DC Full Bandwidth EXT 5 500mV DC Full Bandwidth AC Coupling It is the same as the DC coupling in case of 50Hz or more Trigger Level Range Internal 6 divisions from the screen center EXT 600mV EXT S 3V Trigger Level Inside 0 3 div Ao pl inet 40mV 6 of Set Value is applicable to the signal with the rising EXT S 200mV 6 of Set Value and falling time gt 20ns Trigger Displacement Preliminary Trigger 655 divisions Late Trigger 4 divisions Set Level to 50 Operation under the condition of input signal frequency gt Typical 50Hz Trigger Sensitivity Internal Peak to peak value of 2 divisions Video trigger typical EXT 400mV EXT S 2V Signal System and Line Field Frequency Video Trigger Type Supporting the NTS
45. on while waiting for the trigger condition After a trigger is detected the oscilloscope will continuously collect data enough to draw the wave form at the right side of the trigger point One knob and four function menu buttons are included in the trigger control zone LEVEL Trigger the level control knob and set the signal voltage corresponding to the trigger point SET TO 50 Set the trigger level as the vertical mid point value of the amplitude of the trigger signal FORCE TRIG It is a force trigger button for the generation of a trigger signal which is mainly used in the Normal and Single triggering modes TRIG VIEW Trigger the resetting of the horizontal position TRIG MENU It is a trigger menu button When it is pressed an operation menu will be presented in the screen shown as Fig 26 TRIG MODI Fig 26 Trigger Mode Menu 41 6 9 Trigger Control There are two trigger modes Edge Trigger and Video Trigger Each trigger mode uses different function menu The switching between two modes can be implemented by pressing the F1 menu selection button Edge Trigger It happens when the trigger input passes through a given level along the set direction Video Trigger Carry out the field or line video trigger of the standard video signal The Edge and Video Trigger menus are described respectively as below 6 10 Edge Trigger Under the Edge Trigger mode a trigger happens in the trigger threshold value of
46. ooooooooooooooo 67 EME 68 Battery Using Guide ooooooo AN a eissoes okos 69 Aplab Sales amp Service Centres ooooooo oooo ooooo ooooooooooooo 70 1 General Safety Requirements amp precautions Before Connecting to the Power Mains please read following safety precautions to avoid any possible body injury and to prevent this product or any other products connected from damage In order to avoid any contingent danger this product is only used within the range specified Only the qualified technicians can carry out the servicing and the maintenance Prevent the Fire or Body Injury Use the proper power line Only use the power cord specially provided for this product or that has been approved to be used Connect or Disconnect Correctly When the probe or testing wire is connected to the power lead please do not connect and disconnect the probe or testing wire freely Product Grounding This product is grounded through the power lead grounding conductor In order to prevent any electric shocking the grounding conductor must be connected to the ground Please ensure that this product has been already grounded correctly before any connection with its input or output terminal Connect the probe correctly The grounding end of the probe corresponds to the grounding phase Please don t connect the grounding end to the positive phase Pay attention to the limiting values of all terminals In order to prevent any fire or electric sh
47. ope fulfill the following two conditions at first can these specification standards be reached E This instrument should run for more than 30 minutes continuously under the specified operating temperature EH Ifthe change range of the operating temperature is up to or exceeds 5 open the system function menu and execute the Auto calibration procedure All specification standards can be fulfilled except one s marked with the word Typical Sampling ACQU Mode Sample Peak Detection Average Sampling Rate 100 MS s Input Input Coupling DC AC Input Impedance 1MQ 2 connected with 20pF 3pF in parallel Probe attenuation coefficient 1X 10X 100X 1000X Max Input Voltage 300V Peak Value Level Sampling Rate Range 10S s 100MS s Waveform interpolation sinx x Record Length 5000 sampling points per channel Scanning Speed Range Sns div 5s div according to the stepping mode of S div 1 2 5 5 Accuracy of Sampling Rate 100ppm for any time interval equal to or greater and Delay Time than 1ms Measuring Accuracy of Time Single One Sampling Interval Time 100ppm x Interval T Full Reading 0 6ns Bandwidth gt Averages of 16 One Sampling Interval Time 100ppmx Reading 0 4ns Vertical A D Converter Resolution of 8 bits with the sampling carried out in two channels at the same time Sensitivity Volt divisi
48. reen as Fig 45 FUNCTION Fig 45 Function Menu The description of the Auxiliary Function Menu is shown as the following table Function Menu Setting Description System Status Display the system function menu Recall Factory Call out the factory settings Do Self Cal Carry out the self calibration procedure Language Chinese Choose the display language of the ENGLISH operating system 58 6 20 Do Self Cal Self Calibration The self calibration procedure can improve the accuracy of the oscilloscope under the ambient temperature to the greatest extent If the change of the ambient temperature is up to or exceeds 5 the self calibration procedure should be executed to obtain the highest level of accuracy Before executing the self calibration procedure disconnect the probe or wire and the input connector Then press the F3 menu selection button and choose Do Self Cal After confirming it is all set push down F3 button and choose Do Self Cal entering the self calibration procedure of the instrument 6 21 SYS STAT System State Press the F1 menu selection button and choose SYS STAT item The menu pops up in the screen as Fig 46 Fig 46 SYS STAT Menu 59 The SYS STAT menu is described as the following table Function Menu Setting Description Horizontal Show the horizontal parameter of the channel Vertical Show the vertical parameter of
49. ted is closed off For the screen display see Fig 18 and Fig 19 M Pos 0 000ns Fig 18 Wave Form not Inverted 33 M Pos 0 000ns Fig 19 Wave Form Inverted 34 6 2 MATH Function The Math function is used to show the results of the addition and subtraction operations between Channel 1 and Channel 2 Taking the additive operation between Channel 1 and Channels 2 for example the operation steps are as follows 1 Press the MATH MENU button and call out the WAVE MATH menu 2 Press the F3 menu selection button and choose CH1 CH2 The green calculated wave form M is displayed in the screen press the F3 menu selection button again the wave form M is closed off see Fig 20 CH1 80 0mu Fig 20 Wave Form resulted from CH1 CH2 Mathematical Manipulation The corresponding FCL Functional Capabilities List of the Wave Form Calculation Setting Description CH1 CH2 Subtract the Channel 2 wave form from the Channel 1 wave form CH2 CH1 Subtract the Channel 1 wave form from the Channel 2 wave form CH1 CH2 Add the Channel 1 wave form to the Channel 2 35 6 3 Application of VERTICAL POSITION and VOLTS DIV Controls Cl The VERTICAL POSITION knob is used to adjust the vertical positions of the wave forms of all Channels including those resulted from the mathematical operation The analytic resolution of this control knob changes with the vertical division The VOLTS
50. to change the horizontal time base and it can be found that the Horizontal Time Base display in the status bar changes accordingly The horizontal scanning speed steps from Sns up to 5s in the sequence of 1 2 5 5 2 Use the HORIZONTAL POSITION knob to adjust the horizontal position of the signal in the waveform window The HORIZONTAL POSITION knob is used to control the triggering displacement of the signal or for other special applications If it is applied to triggering the displacement it can be observed that the wave form moves horizontally with the knob when you rotate the Horizontal Position knob 3 With the HORIZONTAL MENU button pushed down you can set and initiate the Window Expansion 26 5 10 Trigger System Please refer to Fig 13 there are a knob and four buttons in the TRIGGER CONTROLS The following practices will direct you to get familiar with the setting of the trigger system gradually Fig 13 Trigger Control Zone 1 Press the TRIG MENU button and call out the trigger menu With the operations of the 5 menu selection buttons the trigger setting can be changed 2 Use the LEVEL knob to change the trigger level setting With the rotation of the LEVEL knob it can found that the trigger indicator in the screen will move up and down with the rotation of the knob With the movement of the trigger indicator it can be observed that the trigger level value displayed
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