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4.Advanced User Guidebook

25

below.

Zoom the Waveform

Push the

Horizontal

HOR

button to enter wave zoom mode. The top half of

the display shows the Main window and the bottom half displays the Zoom
window. The Zoom window is a magnified portion of the Main window.

Time base of

Zoom window

Selected portion

Main Window

Horizontal position of
Zoom window

Zoom Window

In normal mode, the

Horizontal Position

and

Horizontal Scale

knobs are

used to adjust the horizontal position and time base of the Main window.
In wave zoom mode, the

Horizontal Position

and

Horizontal Scale

knobs are

used to adjust the horizontal position and time base of the Zoom window.

How to Set the Trigger System

Trigger  determines  when  DSO  starts  to  acquire  data  and  display  waveform.
Once trigger is set correctly, it can convert the unstable display to meaningful
waveform.
When DSO starts to acquire data, it will collect enough data to draw waveform
on left of trigger point. DSO continues to acquire data while waiting for trigger
condition  to  occur.  Once  it  detects  a  trigger  it  will  acquire  enough  data
continuously to draw the waveform on right of trigger point.
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.

Force:

Force to create a trigger signal and the function is mainly used in

"Normal" and "Single" mode.

Trigger Menu:

The button that activates the trigger control menu.

Trigger Control

The oscilloscope provides two trigger types: single trigger, alternate trigger.
Each type of trigger has different sub menus.

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Содержание DSO-2104

Страница 1: ...DSO 2104 Digital Storage Oscilloscope User Manual ...

Страница 2: ...service centre a copy of the customer s proof of purchase is also required This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care We shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than our company representatives to install repair or service the ...

Страница 3: ...to the Horizontal System 14 Introduction to the Trigger System 15 4 Advanced User Guidebook 17 How to Set the Vertical System 18 Use Mathematical Manipulation Function 19 The Waveform Calculation 20 Using FFT function 20 Use Vertical Position and Scale Knobs 24 How to Set the Horizontal System 24 Zoom the Waveform 25 How to Set the Trigger System 25 Single Trigger 26 How to Operate the Function Me...

Страница 4: ...apturing a Single Signal 52 Example 4 Analyze the Details of a Signal 53 Example 5 Application of X Y Function 55 Example 6 Video Signal Trigger 56 7 Troubleshooting 58 8 Technical Specifications 58 General Technical Specifications 61 9 Appendix 62 Appendix A Enclosure 62 Appendix B General Care and Cleaning 62 ...

Страница 5: ...tion with its input or output terminals When the instrument is powered by AC do not measure AC power sources directly otherwise it will cause a short circuit This is because the testing ground and power cord ground conductor are connected Check all Terminal Ratings To avoid fire or shock hazard check all ratings and markings on this product Refer to the user manual for more information about ratin...

Страница 6: ...ces that could result in damage to this product or other property Terms on the product The following terms may appear on this product Danger Indicates an immediate hazard or injury possibility Warning Indicates a possible hazard or injury Caution Indicates potential damage to the instrument or other property Safety Symbols Symbols on the product The following symbol may appear on the product Hazar...

Страница 7: ...re AC power when the AC powered oscilloscope is connected to the AC powered PC through the ports 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 ...

Страница 8: ...gh which you can set the different options for the current menu The other buttons are function buttons through which you can enter different function menus or obtain a specific function application directly 3 5 6 1 2 7 4 Figure 3 1 Front panel 1 Display area 2 Menu selection buttons Select the right menu item 3 Control button and knob area 4 Probe Compensation Measurement signal 5V 1kHz output 5 S...

Страница 9: ...ts 3 AC power input jack 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 ...

Страница 10: ... adjust trigger voltage Other 2 buttons refer to trigger system setting 4 Copy button This button is the shortcut for Save function in the Utility function menu 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 5 Vertical control area with 5 buttons and 2 knobs CH1 CH4 buttons ...

Страница 11: ...trigger including Auto Automatic mode and acquire waveform without triggering Trig Trigger detected and acquire waveform Ready Pre triggered data captured and ready for a trigger Scan Capture and display the waveform continuously Stop Data acquisition stopped 4 The two blue dotted lines indicates the vertical position of cursor measurement 5 The T pointer indicates the horizontal position for the ...

Страница 12: ...RF FFR the FFR FFF the FFF LRR the LRF the LRF LFR the LFR LFF the LFF PD the Delay A B value ND the Delay A B value TR the Cycle RMS CR the Cursor RMS WP the Screen Duty RP the Phase A B FP the Phase A B PC the Pulse count PC the Pulse count E the Rise edge count E the Fall edge count AR the Area CA the Cycle area 17 The readings show the record length 18 The frequency of the trigger signal 19 Th...

Страница 13: ...ucceed in the electrical and mechanical property tests 2 Check the Accessories The supplied accessories have been already described in the Appendix A Enclosure 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 our distributor responsible for this service or our...

Страница 14: ...3 Push the Autoset Button on the front panel The square wave of 1 KHz frequency and 5V peak peak value will be displayed in several seconds see Figure 3 5 Figure 3 5 Auto set Check CH2 CH3 and CH4 by repeating Step 2 and Step 3 How to Implement the Probe Compensation When connect the probe with any input channel for the first time make this adjustment to match the probe with the input channel The ...

Страница 15: ...mpensated correctly Under compensated Figure 3 6 Displayed Waveforms of the Probe Compensation 3 Repeat the steps mentioned if needed Figure 3 7 Adjust Probe How to Set the Probe Attenuation Coefficient The probe has several attenuation coefficients which will influence the vertical scale factor of the oscilloscope To change or check the probe attenuation coefficient in the menu of oscilloscope 1 ...

Страница 16: ...h of the oscilloscope in 5MHz To use the full bandwidth of the oscilloscope the switch must be set to 10X How to Use the Probe Safely The safety guard ring around the probe body protects your finger against any electric shock shown as Figure 3 9 Figure 3 9 Finger Guard Warning To avoid electric shock always keep your finger behind the safety guard ring of the probe during the operation To protect ...

Страница 17: ...tons and knobs in Vertical Controls The 4 channels are marked by different colors which are also used to mark both the corresponding waveforms on the screen and the channel input connectors Press one of the channel buttons to open the corresponding channel menu and press again to turn off the channel Press the Math button to display the math menu in the bottom The pink M waveform appears on the sc...

Страница 18: ...gher sensitivity Vertical offset back to 0 shortcut key Turn the Vertical Position knob to change the vertical display position of the selected channel and push the position knob to set the vertical display position back to 0 as a shortcut key this is especially helpful when the trace position is far out of the screen and want it to get back to the screen center immediately 3 Change the Vertical S...

Страница 19: ... Horizontal Position knob to change the horizontal position of channel and push the Horizontal Position knob to set the triggering displacement back to 0 as a shortcut key 3 Push the Horizontal HOR button to switch between the normal mode and the wave zoom mode Introduction to the Trigger System As shown in Figure 3 12 there are one knob and three buttons make up Trigger Controls The following pra...

Страница 20: ...change trigger level value and it is also the hotkey to set trigger level as the vertical mid point values of the amplitude of the trigger signal 3 Push the Force button to force a trigger signal which is mainly applied to the Normal and Single trigger modes ...

Страница 21: ...tem How to Set the Sampling Display How to Save and Recall Waveform How to Implement the Auxiliary System Function Setting How to Update your Instrument Firmware 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 oscillosco...

Страница 22: ...escription of the Channel Menu is shown as the following list Function Menu Setting Description Coupling DC AC Ground Pass both AC and DC components of the input signal Block the DC component of the input signal Disconnect the input signal Inverted ON OFF Display inverted waveform Display original waveform Probe 1X 10X 100X 1000X Match this to the probe attenuation factor to have an accurate readi...

Страница 23: ...at is on the probe see How to Set the Probe Attenuation Coefficient on P11 If the attenuation coefficient of the probe is 1 1 the menu setting of the input channel should be set to1X Take the Channel 1 as an example the attenuation coefficient of the probe is 10 1 the operation steps are shown as follows 1 Push the CH1 button to show the CH1 SETUP menu 2 In the right menu select Probe In the left ...

Страница 24: ...voltage division of the Math waveform Prev Page Enter previous page Taking the additive operation between Channel 1 and Channels 2 for example the operation steps are as follows 1 Press the Math button to display the math menu in the right The pink M waveform appears on the screen 2 In the right menu select Type as Math 3 In the right menu select Factor1 as CH1 4 In the right menu select Sign as 5...

Страница 25: ...T source Window Hamming Rectangle Blackman Hanning Kaiser Bartlett Select window for FFT Format Vrms dB Select Vrms for Format Select dB for Format Next Page Enter next page Hori Hz frequency frequency di v Switch to select the horizontal position or time base of the FFT waveform turn the M knob to adjust it Vertical div V or dBVrms Switch to select the vertical position or voltage division of the...

Страница 26: ... determine which window to use Use the following guidelines to select the best window Type Characteristics Window Hamming Better solution for magnitude than Rectangle and good for frequency as well It has slightly better frequency resolution than Hanning Recommend to use for Sine periodic and narrow band random noise Transients or bursts where the signal levels before and after the event are signi...

Страница 27: ... to the traditional Gaussian RBW This window is also good for random signals Bartlett The Bartlett window is a slightly narrower variant of the triangular window with zero weight at both ends Notes for using FFT Use the default dB scale for details of multiple frequencies even if they have very different amplitudes Use the Vrms scale to compare frequencies DC component or offset can cause incorrec...

Страница 28: ...played at the left bottom corner of the screen see Figure 4 1 Figure 4 1 Information about Vertical Position How to Set the Horizontal System The HORIZONTAL CONTROLS includes the Horizontal HOR button and such knobs as Horizontal Position and Horizontal Scale 1 Horizontal Position knob this knob is used to adjust the horizontal positions of all channels include those obtained from the mathematical...

Страница 29: ... data and display waveform Once trigger is set correctly it can convert the unstable display to meaningful waveform When DSO starts to acquire data it will collect enough data to draw waveform on left of trigger point DSO continues to acquire data while waiting for trigger condition to occur Once it detects a trigger it will acquire enough data continuously to draw the waveform on right of trigger...

Страница 30: ...r mode to trigger on rising edge or falling edge Push the Trigger Menu button to display the Trigger menu on the right Select Type as Single in the right menu Select Single as Edge in the right menu In Edge Trigger mode the trigger setting information is displayed on bottom right of the screen for example indicates that trigger type is edge trigger source is CH1 coupling is DC and trigger level is...

Страница 31: ...er menu on the right Select Type as Single in the right menu Select Single as Video in the right menu In Video Trigger mode the trigger setting information is displayed on bottom right of the screen for example indicates that trigger type is Video trigger source is CH1 and Sync type is Even Video Trigger menu list MENU SETTING INSTRUCTION Single Video Set vertical channel single trigger type as vi...

Страница 32: ...Acquire button Function Menu Setting Description Acqu Mode Sample Peak Detect Average Normal sampling mode Use to capture maximal and minimal samples Finding highest and lowest points over adjacent intervals It is used for the detection of the jamming burr and the possibility of reducing the confusion It is used to reduce the random and don t care noises with the optional number of averages Turn t...

Страница 33: ...ion knobs are used to set the horizontal scale and position The Vertical Scale and the Vertical Position knobs are used to set the vertical scale and position continuously The following functions can not work in the XY Format Reference or digital wave form Cursor Trigger control FFT Operation steps 1 Push the Acquire button to show the right menu 2 Select XY Mode as ON or OFF in the right menu Cou...

Страница 34: ...left menu turn the M knob to choose the object which the waveform is saved to or recall from Recall or close the waveform stored in the current object address When the show is ON if the current object address has been used the stored waveform will be shown the address number and relevant information will be displayed at the top left of the screen if the address is empty it will prompt None is save...

Страница 35: ...st The file name is editable 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 In order to save the waveform of CH1 CH2 CH3 CH4 and Math into the object Wave0 the operation steps should be followed 1 Turn on CH1 CH2 CH3 CH4 and Mat...

Страница 36: ...e supplied CD Shortcut for Save function The Copy button on the bottom right of the front panel is the shortcut for Save function in the Utility function menu 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 Save the current screen image The screen image can only be stored in ...

Страница 37: ...is through formatting software to format Use system provided function to format the USB disk 1 Connect the USB disk to the computer 2 Right click Computer Manage to enter Computer Management interface 3 Click Disk Management menu and information about the USB disk will display on the right side with red mark 1 and 2 Figure 4 2 Disk Management of computer 4 Right click 1 or 2 red mark area choose F...

Страница 38: ... FAT32 with allocation unit size 4096 after formatting Use Minitool Partition Wizard to format Download URL http www partitionwizard com free partition manager html Tip There are many tools for the USB disk formatting on the market just take Minitool Partition Wizard for example here 1 Connect the USB disk to the computer 2 Open the software Minitool Partition Wizard ...

Страница 39: ...about the USB disk will display on the right side with red mark 1 and 2 Figure 4 6 Reload Disk 4 Right click 1 or 2 red mark area choose Format Figure 4 7 Choose format 5 Set File System FAT32 Cluster size 4096 Click OK Figure 4 8 Format setting 6 Click Apply at the top left of the menu Then click Yes on the pop up warning ...

Страница 40: ...re 4 10 Format process 8 Format the USB disk successfully Figure 4 11 Format successfully How to Implement the Auxiliary System Function Setting Config Push the Utility button select Function in the right menu select Configure in the left menu The description of Configure Menu is shown as the follows ...

Страница 41: ...ocedure should be executed to obtain the highest level of accuracy Before executing the self calibration procedure disconnect all probes or wires Function Menu Setting Description Function Configure Show the configure menu KeyLock Lock all keys Unlock method push Trigger Menu button in trigger control area then push Force button repeat 3 times About Show the version and serial number Function Menu...

Страница 42: ... a Waveform on page 30 Update Use the front panel USB port to update your instrument firmware using a USB memory device Refer to How to Update your Instrument Firmware on page 38 How to Update your Instrument Firmware Use the front panel USB port to update your instrument firmware using a USB memory device USB memory device requirements Insert a USB memory device into the USB port on the front pan...

Страница 43: ... take up to three minutes After completion the instrument will be shut down automatically 7 Press the button to power on the instrument How to Measure Automatically Push the Measure button to display the menu for the settings of the Automatic Measurements At most 8 types of measurements could be displayed on the bottom left of the screen The oscilloscopes provide 39 parameters for auto measurement...

Страница 44: ...ress Remove again to remove the selected measure type Remove All Remove all the measures Prev Page Enter previous page Measure Only if the waveform channel is in the ON state the measurement can be performed The automatic measurement can not be performed in the following situation 1 On the saved waveform 2 On the Dual Wfm Math waveform 3 On the Video trigger mode On the Scan format period and freq...

Страница 45: ...t Cycle RMS and Cursor RMS Figure 4 13 below shows a pulse with some of the voltage measurement points Figure 4 13 Mean The arithmetic mean over the entire waveform PK PK Peak to Peak Voltage RMS The true Root Mean Square voltage over the entire waveform Max The maximum amplitude The most positive peak voltage measured over the entire waveform Min The minimum amplitude The most negative peak volta...

Страница 46: ...ents include Period Frequency Rise Time Fall Time D width D width Duty Duty Delay A B Delay A B and Duty cycle Figure 4 14 shows a pulse with some of the time measurement points Figure 4 14 Rise Time Time that the leading edge of the first pulse in the waveform takes to rise from 10 to 90 of its amplitude Fall Time Time that the falling edge of the first pulse in the waveform takes to fall from 90...

Страница 47: ...ount 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 RiseEdgeCnt The number of positive transitions from the low reference value to the high reference value in the waveform FallEdgeCnt The number of negative transitions from the high reference value to the lo...

Страница 48: ...Turn the M knob to move line a Turn the M knob to move line b Two cursors are linked Turn the M knob to move the pair of cursors Source CH1 CH2 CH3 CH4 Display the channel to which the cursor measurement will be applied Perform the following operation steps for the time and voltage cursor measurement of the channel CH1 1 Push Cursor to display the cursor menu 2 In the right menu select Source as C...

Страница 49: ...enu select Window as Main or Extension to make the cursors shown in the main window or zoom window Figure 4 15 Time Voltage Cursor Measurement Auto Cursor For the AutoCursr type the horizontal cursors are set as the intersections of the vertical cursors and the waveform Auto Cursor The Cursor Measurement for FFT mode In FFT mode push the Cursor button to turn cursors on and display the cursor menu...

Страница 50: ...ps for the amplitude and frequency cursor measurement of math FFT 1 Press the Math button to display the right menu Select Type as FFT 2 Push Cursor to display the cursor menu 3 In the right menu select Window as Extension 4 Press the first menu item in the right menu select Freq Vamp for Type two blue dotted lines displayed along the horizontal direction of the screen two blue dotted lines displa...

Страница 51: ...ger Source CH1 or CH2 or CH3 or CH3 Trigger Coupling DC Trigger Slope Current Trigger Level 3 5 of the waveform Trigger Mode Auto Display Format YT Force Stop Inverted Off Zoom Mode Exit 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...

Страница 52: ...vision and the horizontal time base of the waveform still 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 is 50ms the horizontal time base can be expanded for 4 divisions downwards Copy button This button is the shortcut for Save function in the Utility function menu Pressing this button is equal...

Страница 53: ...ed CD 2 Connection Use a USB data cable to connect the USB Device port in the right panel of the Oscilloscope to the USB port of a PC 3 Install the driver Run the Oscilloscope communication software on PC push F1 to open the help document Follow the steps of title I Device connection in the document to install the driver 4 Port setting of the software Run the Oscilloscope software click Communicat...

Страница 54: ...will implement the Autoset to make the waveform optimized based on which you can further regulate the vertical and horizontal divisions till the waveform meets your requirement 2 Perform Automatic Measurement The oscilloscope can measure most of the displayed signals automatically To measure the period the frequency of the CH1 following the steps below 1 Push the Measure button to show the right m...

Страница 55: ...scope CH1 channel with the circuit signal input end and the CH2 channel to the output end Operation Steps 1 Push the Autoset button and the oscilloscope will automatically adjust the waveforms of the two channels into the proper display state 2 Push the Measure button to show the right menu 3 Select CH1 in the right menu 4 In the left Type menu turn the M knob to select PK PK 5 In the right menu s...

Страница 56: ...irst to run your test using auto trigger to find out the closest trigger level and trigger type this helps user to make few small adjustments to achieve a proper trigger level and mode Here is how we achieve this The operation steps are as follows 1 Set the probe menu attenuation coefficient to 10X and that of the switch in the probe to 10X see How to Set the Probe Attenuation Coefficient on P11 2...

Страница 57: ...signal level push the Run Stop button and wait a trigger Once there is a burr occurring the instrument will trigger automatically and record the waveform during the period around the trigger time 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 wavefor...

Страница 58: ... to reduce the noise level as lower as possible this would enable user to have more details about the signal The Average function offered by our Oscilloscope can help you to achieve this Here are the steps for how to enable Average function 1 Push the Acquire button to display the right menu 2 In the right menu select Acqu Mode as Average 3 Turn the M knob and observe the waveform obtained from av...

Страница 59: ...put of the circuit in the form of X Y coordinate graph please operate according to the following steps 1 Set the probe menu attenuation coefficient for 10X and that of the switch in the probe for 10X see How to Set the Probe Attenuation Coefficient on P11 2 Connect the probe of channel 1 to the input of the network and that of Channel 2 to the output of the network 3 Push the Autoset button with t...

Страница 60: ...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 Example 6 Video Signal Trigger Observe the vi...

Страница 61: ...u select Single as Video 4 In the right menu select Source as CH1 5 In the right menu select Modu as NTSC 6 In the right menu press Next Page select Sync as Field 7 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 ...

Страница 62: ...n of the probe to make sure they are match see How to Set the Probe Attenuation Coefficient on P11 4 There is a waveform 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 Check on the trigger Type item The common signal chooses the Edge trigger mode for Type and the video signal the Video On...

Страница 63: ...me 1 GS s Input Input coupling DC AC Ground Input impedance 1 MΩ 2 in parallel with 15 pF 5 pF Input coupling 1X 10X 100X 1000X Max input voltage 400V DC AC PK PK Channel channel isolation 50Hz 100 1 10MHz 40 1 Time delay between channel typical 150ps Bandwidth limit 20 MHz full bandwidth Horizontal System Sampling rate range 0 5 S s 1 GS s Interpolation Sinx x Max Record length 80K Scanning speed...

Страница 64: ...ll Time Pulse Width Pulse Width FRR FRF FFR FFF LRR LRF LFR LFF Duty Cycle Duty Cycle Delay A B Delay A B Cycle RMS Cursor RMS Screen Duty Phase A B Phase A B Pulse Count Pulse Count Rise Edge Count Fall Edge Count Area and Cycle Area Waveform Math FFT Waveform storage 16 waveforms Lissajous figure Bandwidth Full bandwidth Phase difference 3 degrees Communication port USB 2 0 USB storage Counter S...

Страница 65: ...ixels Display Colors 65536 colors TFT screen Output of the Probe Compensator Output Voltage Typical About 5 V with the Peak to Peak voltage 1 MΩ Frequency Typical Square wave of 1 KHz Power Mains Voltage 100 240 VACRMS 50 60 Hz CAT Ⅱ Power Consumption 15 W Fuse 2 A T class 250 V Environment Temperature Working temperature 0 40 Storage temperature 20 60 Relative Humidity 90 Height Operating 3 000 m...

Страница 66: ...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 scrub with...

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