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SMO1000E

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Overview of Sampling

To understand the oscilloscope's sampling and acquisition modes, it is helpful to
understand sampling theory, sample rate and oscilloscope bandwidth and sample rate.

Sampling Theory

The Nyquist sampling theorem states that for a limited bandwidth (band- limited) signal

with maximum frequency f

MAX

, the equally spaced sampling frequency f

S

must be

greater than twice the maximum frequency f

MAX

, in order to have the signal be uniquely

reconstructed without aliasing.

f

MAX

= f

S/2

= Nyquist frequency (f

N

) = folding frequency

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Содержание SMO1000E

Страница 1: ...Digital oscilloscope SMO1000E User Manual ...

Страница 2: ...ten consent Information in this manual supersedes 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 Ver_1 00 0917 Scientific Mes Technik Pvt Ltd B 14 Industrial Estate Pologround Indore 452015 India Tel 0731 2422330 31 32 33 Fax 0731 ...

Страница 3: ... Connect the Probe 20 Function Inspection 21 Probe Compensation 22 Front Panel Overview 23 Rear Panel Overview 24 Front Panel Function Overview 25 Horizontal 25 Vertical 26 Trigger 27 Run Control 28 Universal Knob 29 Menu 30 Help 31 User Interface 32 To Use the Security Lock 34 To Set the Vertical System 35 To Enable the Channel 36 To Adjust the Vertical Scale 37 To Adjust the Vertical Position 37...

Страница 4: ...sition Mode 54 Normal 55 Peak Detect 56 Average 57 High Resolution 58 Change the Horizontal Format 59 Use Sequence Mode 60 To Trigger the Oscilloscope 62 Trigger Source 64 Trigger Mode 65 Trigger Level 66 Trigger Coupling 67 Trigger Holdoff 68 Noise Rejection 69 Trigger Type 71 Edge Trigger 72 Slope Trigger 73 Pulse Trigger 75 Video Trigger 77 Window Trigger 80 Interval Trigger 83 DropOut Trigger ...

Страница 5: ...Waveform 124 To Adjust REF Waveform Display 125 To Clear REF Waveform Display 125 To Make Math Operation 126 Units for Math Waveforms 126 Math Operators 127 Addition or Subtraction 127 Multiplication and Division 128 FFT Operation 129 Math Function Operation 132 Differentiate 132 Integrate 133 Square Root 134 To Make Cursors Measurements 135 X Cursors 135 Y Cursors 135 To Make Cursor Measurements ...

Страница 6: ...em Function Setting 161 To View the System Status 162 To Do Self Calibration 163 To Enable or Disable the Sound 164 To Specify the Language 164 To Do Pass Fail Test 165 To Set and Perform Pass Fail Test 166 To Save and Recall Test Mask 167 IO Set 169 To Set the USB Device 169 To Set the LAN 170 To Set Aux Output 171 To Update Firmware and Configuration 172 Do Self Test 173 Screen Test 173 Keyboard...

Страница 7: ...ls Ratings To avoid fire or electric shock please look over all ratings and sign instruction of the instrument Before connecting the instrument please read the manual carefully to gain more information about the ratings Use Proper Overvoltage Protection Make sure that no overvoltage such as that caused by a thunderstorm can reach the product or else the operator might expose to danger of electrica...

Страница 8: ...nel Do Not Operate in Wet Conditions In order to avoid short circuiting to the interior of the device or electric shock please do not operate in a humid environment Do Not Operate in an Explosive Atmosphere In order to avoid damages to the device or personal injuries it is important to operate the device away from an explosive atmosphere Keep Product Surfaces Clean and Dry To avoid the influence o...

Страница 9: ...ices that could result in damage to this product or other property Terms on the product These terms may appear on the product DANGER Indicates direct injuries or hazards that may happen WARNING Indicates potential injuries or hazards that may happen CAUTION Indicates potential damages to the instrument or other property that may happen Symbols on the product These symbols may appear on the product...

Страница 10: ... to the user Measurement category II is for measurements performed on circuits directly connected to the low voltage installation Examples are measurements on household appliances portable tools and similar equipment Measurement category III is for measurements performed in the building installation Examples are measurements on distribution boards circuit breakers wiring including cables bus bars ...

Страница 11: ...category I refers to signal level which is applicable to equipment measurement terminals connected to the source circuit In these terminals precautions are done to limit the transient voltage to the corresponding low level Installation overvoltage category II refers to the local power distribution level which is applicable to equipment connected to the AC line AC power Ventilation Requirement This...

Страница 12: ...ularly according to its operating conditions 1 Disconnect the instrument from all power sources and then clean it with a soft wet cloth 2 Clean the loose dust on the outside of the instrument and probe with a soft cloth When cleaning the LCD take care to avoid scarifying it WARNING To avoid damages to the surface of the instrument and probe please do not use any corrosive liquid or chemical cleans...

Страница 13: ...xternal trigger and various trigger types of the oscilloscope Serial Trigger Introduce how to trigger the input signal To Save Reference Waveform Introduce how to save and display REF waveform To Make Math Operation Introduce the math operation function of the oscilloscope To Make Cursor Measurements Introduce how to use cursors to make measurements To Make Measurements Introduce how to use measur...

Страница 14: ...om Noise Average Mode 58 Figure 19 SEQUENCE Function Menu 60 Figure 20 HISTORY Function Menu 60 Figure 21 Turn off the Noise Reject 69 Figure 22 Turn on the Noise Reject 70 Figure 23 Edge Trigger 72 Figure 24 Slope Trigger 74 Figure 25 Pulse Trigger 76 Figure 26 Video Trigger 79 Figure 27 Absolute Window Trigger 81 Figure 28 Relative Window Trigger 82 Figure 29 Interval Trigger 84 Figure 30 Edge D...

Страница 15: ... Figure 55 All Parameters Measurement 144 Figure 56 Vectors Display 146 Figure 57 Dots Display 146 Figure 58 Color Temperature 147 Figure 59 Persist Set to Infinite 148 Figure 60 SAVE RECALL File System 155 Figure 61 Select Save Location 156 Figure 62 File Name Dialogue 156 Figure 63 Input Keyboard 159 Figure 64 System Status 162 Figure 65 Do Self Cal 163 Figure 66 Pass Fail Test 165 Figure 67 LAN...

Страница 16: ... the first time the front panel rear panel and user interface of the oscilloscope The contents of this chapter Appearance and Dimensions To Prepare the Oscilloscope for Use Front Panel Overview Rear Panel Overview Front Panel Function Overview Back Panel Function Overview User Interface To Use the Security Lock ...

Страница 17: ...Scientific SMO1000E 17 185 Appearance and Dimensions Figure 1 Front View Figure 2 Top View ...

Страница 18: ...ope for Use To Adjust the Supporting Legs Adjust the supporting legs properly to use them as stands to tilt the oscilloscope upwards for stable placement of the oscilloscope as well as better operation and observation Figure 3 Adjust the Supporting Legs ...

Страница 19: ... to Power Supply The power requirements of the oscilloscope are 100 240 V 50 60 440 Hz Please use the power cord supplied with the accessories to connect the oscilloscope to the power source Power socket Figure 4 To Connect to Power Supply ...

Страница 20: ...e self test is finished the welcome screen is displayed To Connect the Probe The manufacturer provides passive probes for the oscilloscope For detailed technical information of the probes please refer to the corresponding Probe User s Guide Connect the Probe 1 Connect the BNC terminal of the probe to a channel BNC connector of the oscilloscope at the front panel 2 Connect the probe tip to the circ...

Страница 21: ...gnal Output Terminal of the probe 4 Press the Auto Setup 5 Observe the waveform on the display In normal condition the display should be a square waveform as shown in the figure below Figure 5 Function Inspection 6 Use the same method to test the other channels If the square waveforms actually shown do not match that in the figure above please perform Probe Compensation in the next section WARNING...

Страница 22: ...e probe compensation procedures are as follows 1 Set the switch to 10X on the probe 2 Perform steps 1 2 3 and 4 of Function Inspection in the previous section 3 Check the waveforms displayed and compare them with the following Over Perfectly Under Compensated Compensated Compensated 4 Use a nonmetallic driver to adjust the low frequency compensation adjustment hole on the probe until the waveform ...

Страница 23: ...view NO Description NO Description 1 LCD Display 8 Vertical Control 2 Universal Knob 9 Probe Comp 3 Common Function Menus 10 Analog Channel and Ext Input 4 Run Stop 11 USB Host 5 Auto Setup 12 Menu Softkey 6 Trigger Control 13 Menu on off 7 Horizontal Control 14 Power Button ...

Страница 24: ...ety lock Hole You can lock the instrument to a fixed location using the security lock please buy it yourself via the lock hole 3 LAN The instrument can be connected to network via this interface to perform remote control 4 Pass Fail or Trigger Out The BNC port can output a signal that reflects the current waveform capture rate of the oscilloscope at each trigger or a pass fail test pulse 5 USB Dev...

Страница 25: ...left or right and the trigger position message at the upper right corner of the screen would change accordingly Press down this knob to quickly reset the trigger delay to Zero Horizontal Scale Knob adjust the horizontal time base Turn clockwise to reduce the time base and turn counterclockwise to increase the time base During the modification waveforms of all the channels will be displayed in expa...

Страница 26: ...een would change accordingly Press down this knob to quickly reset the vertical position to zero Vertical Variable Knob adjust the vertical scale of the current channel Turn clockwise to decrease the scale and turn counterclockwise to increase During the modification the amplitude of the waveform would enlarge or reduce and the scale information at the right side of the screen would change accordi...

Страница 27: ...mal press the button to set the trigger mode to Single Trigger Level Knob adjust the trigger level Turn clockwise to increase the level and turn counterclockwise to reduce the level During the modification the trigger level line would move up and down and the value in the trigger level message box at the up right corner of the screen would change accordingly Press down the knob to quickly reset th...

Страница 28: ...lloscope will automatically adjust the vertical scale horizontal time base and trigger mode according to the input signal to realize optimum waveform display press the button to set the acquisition state to Run or Stop In RUN state the key is illuminated in yellow In STOP state the key is illuminated in red ...

Страница 29: ...he menu and push down the knob to confirm the current submenu Turn clockwise to up the intensity and counterclockwise to down 3 Modify parameters After having chosen a parameter turn the Universal Knob to modify the value Turn clockwise to increase the intensity and counterclockwise to reduce In addition it can also be used to adjust scale and offset of MATH and REF 4 Choose file or directory or i...

Страница 30: ...button to enter the MEASURE function menu to set the measurement parameters all measurement statistics and set the gate Press the button to enter the ACQUIRE function menu to set the acquisition mode memory depth wave interpolation and so on Press the button to enter the SAVE RECALL function menu to save setups waveforms pictures or CSV files to internal memory or USB flash driver Press the button...

Страница 31: ...n on line help function that supplies multi language help information You can access the help function by pressing any button for 2 seconds and a help window will explain the function Also all of the submenus include help information Figure 8 Help Message ...

Страница 32: ...able trigger status includes Ready Auto Stop Arm Trig d 3 Horizontal Time Base Represent the time per grid on the horizontal axis on the screen Use the HORIZONTAL SCALE Knob to adjust the parameter The available range is from 1 0 ns to 100 s 4 Trigger Position Turn the Horizontal Position Knob to adjust the parameter Push the knob to set the value to 0 automatically 5 Trigger Delay Label Indicate ...

Страница 33: ...amplitude automatically 9 Channel Setup Probe attenuation factor display the current probe attenuation factor of the channel Available probe attenuation factors 0 1X 0 2X 0 5X 1X 2000X 5000X 10000X Input impedance display the current input impedance of the channel Input impedance that available 1MΩ Channel coupling display the current channel coupling of the channel Channel coupling that available...

Страница 34: ...lease buy it yourself to lock the oscilloscope to a fixed location The method is as follows align the lock with the lock hole and plug it into the lock hole vertically turn the key clockwise to lock the oscilloscope and then pull the key out Security lock hole Figure 10 To Use the Security Lock ...

Страница 35: ... oscilloscope The contents of this chapter To Enable the Channel To Adjust the Vertical Scale To Adjust the Vertical Position To Specify Channel Coupling To Specify Bandwidth Limit To Specify Probe Attenuation Factor To Specify channel Input Impedance To Specify Amplitude Unit To Specify Deskew To Invert a Waveform ...

Страница 36: ...and then press the CH1 button in the vertical control area VERTICAL at the front panel to enable CH1 The channel setting menu is displayed at the bottom of the screen and the channel label at the right side of the screen The information displayed in the channel label is related to the current channel setting After the channel is turned on modify the parameters such as the vertical scale the horizo...

Страница 37: ...nterclockwise to increase The scale information in the channel label at the right side of the screen will change accordingly during the adjustment The adjustable range of the vertical scale is related to the probe ratio currently set By default the probe attenuation factor is 1X and the adjustable range of the vertical scale is from 500uV div to 10 V div Note push the VERTICAL Variable Knob to qui...

Страница 38: ... coupling mode is displayed in the channel label at the right side of the screen You can also press the Coupling softkey continuously to switch the coupling mode To Specify Bandwidth Limit Set the bandwidth limit to reduce display noise For example the signal under test is a pulse with high frequency oscillation When the bandwidth limit set to Full the high frequency components of the signal under...

Страница 39: ...e attenuation factor The table shows the probe attenuation factor Menu Attenuation Factor 0 1X 0 1 1 0 2X 0 2 1 0 5X 0 5 1 1X 1 1 2X 2 1 5000X 5000 1 10000X 10000 1 To Specify channel Input Impedance The channel input impedance matching gives you the most accurate measurements because reflections are minimized along the signal path Impedance setting to 1MΩ is for use with many passive probes and f...

Страница 40: ...nnel the adjusting range of plus or minus 100 ns 1 Press CH1button on the front panel to enter the CH1 function menu 2 Press the Next Page softkey to enter the second page of the CH1 function menu 3 Press the Deskew softkey Then turn the Universal Knob to change deskew To Invert a Waveform When Invert is set to On the voltage values of the displayed waveform are inverted Invert affects how a chann...

Страница 41: ...185 Set the Horizontal System This chapter introduces how to set the horizontal system of the oscilloscope The contents of this chapter Adjust the Horizontal Scale Adjust the Trigger Delay Set Roll Mode Use the Zoom Function ...

Страница 42: ...time base information at the upper left corner of the screen will change accordingly during the adjustment The range of the horizontal scale is from 2ns div to 50s div The Horizontal Scale Knob works in the Normal time mode while acquisitions are running or when they are stopped When running adjusting the horizontal scale knob changes the sample rate When stopped adjusting the horizontal scale kno...

Страница 43: ...eference points are indicated along the top of the display grid All events displayed left of the trigger point happened before the trigger occurred These events are called pre trigger information and they show events that led up to the trigger point Everything to the right of the trigger point is called post trigger information The amount of delay range pre trigger and post trigger information ava...

Страница 44: ...o trigger The fixed reference point on the screen is the right edge of the screen and refers to the current moment in time Events that have occurred are scrolled to the left of the reference point Since there is no trigger no pre trigger information is available If you would like to stop the display in Roll mode press the Run Stop button To clear the display and restart an acquisition in Roll mode...

Страница 45: ...anded is outlined with a box and the rest of the normal display is ghosted The box shows the portion of the normal sweep that is expanded in the lower half To change the time base for the Zoom window turn the Horizontal Scale Knob The Horizontal Scale Knob controls the size of the box The Horizontal Position Knob sets the left to right position of the zoom window The delay value which is the time ...

Страница 46: ... System This chapter introduces how to use the run control and set the sampling system of the oscilloscope The contents of this chapter Run Control Overview of Sampling To Specify Memory Depth To Select Sampling Mode Waveform Interpolation Method ...

Страница 47: ...display a single acquisition whether the oscilloscope is running or stopped press Single The Single run control lets you view single shot events without subsequent waveform data overwriting the display Use Single when you want maximum memory depth for pan and zoom When you press Single the display is cleared the trigger mode is temporarily set to Normal to keep the oscilloscope from auto triggerin...

Страница 48: ...lloscope bandwidth and sample rate Sampling Theory The Nyquist sampling theorem states that for a limited bandwidth band limited signal with maximum frequency fMAX the equally spaced sampling frequency fS must be greater than twice the maximum frequency fMAX in order to have the signal be uniquely reconstructed without aliasing fMAX fS 2 Nyquist frequency fN folding frequency ...

Страница 49: ... too low 1 Waveform Distortion when the sample rate is too low some waveform details are lost and the waveform displayed is rather different from the actual signal 2 Waveform Confusion when the sample rate is lower than twice the actual signal frequency Nyquist Frequency the frequency of the waveform rebuilt from the sample data is lower than the actual signal frequency The most common aliasing is...

Страница 50: ... Frequency However digital signals have frequency components above the fundamental frequency square waves are made up of sine waves at the fundamental frequency and an infinite number of odd harmonics and typically for 500 MHz bandwidths and below oscilloscopes have a Gaussian frequency response 0dB 3dB Attenuation Aliased frequency compoments fS 4 fN fS Frequency Limiting oscilloscope bandwidth f...

Страница 51: ...iversal Knob to select the desired value and push down the knob to confirm Press the Mem Depth softkey continually can also select the desired value The actual memory depth is displayed in the information area at the upper right corner of the screen Memory depth that available 14K 140K 1 4M 14M Since the oscilloscope has two acquisition memories when only one channel is on the maximal memory depth...

Страница 52: ...e the oscilloscope samples and displays waveform within a trigger event The maximum real time sample rate is 1GSa s Press the RUN STOP button to stop the sample the oscilloscope will hold the last display At this point you can still use the vertical control and horizontal control to pan and zoom the waveform ...

Страница 53: ...oints The oscilloscope can use interpolation method for filling out the gaps between points to reconstruct an accurate waveform Press the Acquire button on the front panel to enter the ACQUIRE Function menu then press the Interpolation softkey to select Sinx x or X X In the adjacent sample points are directly connected on a straight line This method is only confined to rebuild on the edge of signa...

Страница 54: ...Scientific SMO1000E 54 185 Figure 12 x Interpolation Figure 13 Sinx x Interpolation ...

Страница 55: ...tton on the front panel to enter the ACQUIRE function menu 2 Press the Acquisition softkey then turn the Universal Knob to select the desired acquisition mode and push down the knob to confirm The default setup is Normal Normal In this mode the oscilloscope samples the signal at equal time interval to rebuild the waveform For most of the waveforms the best display effect can be obtained using this...

Страница 56: ...nvelope of the signal or the narrow pulse of the signal that might be lost In this mode signal confusion can be prevented but the noise displayed would be larger In this mode the oscilloscope can display all the pulses with pulse widths at least as wide as the sample period Figure 15 Pulse With 0 1 Duty Normal Mode Figure 16 Pulse With 0 1 Duty Peak Detect Mode ...

Страница 57: ...verages is the lower the noise will be and the higher the vertical resolution will be but the slower the response of the displayed waveform to the waveform changes will be The available range of averages is from 4 to 1024 and the default is 16 When Average mode is selected press Averages and turn the universal knob or press the softkey continually to set the desired average time Figure 17 With Ran...

Страница 58: ...screen This is generally used when the sample rate of the digital converter is higher than the storage rate of the acquisition memory High Resolution mode can be used on both single shot and repetitive signals and it does not slow waveform update This mode limits the oscilloscope s real time bandwidth because it effectively acts like a low pass filter Note Average and High Res modes use different ...

Страница 59: ...ressure volts versus current or voltage versus frequency The phase deviation between two signals with the same frequency can be easily measured via Lissajous method The figure below shows the measurement schematic diagram of the phase deviation According to sinθ A B or C D wherein θ is the phase deviation angle between the two channels and the definitions of A B C and D are as shown in the figure ...

Страница 60: ...pe continues to trigger until memory is filled and then display the waveforms on the screen To use the sequence mode the HORIZONTAL Format must be set to YT Do the following steps to use the sequence mode 1 Press the Acquire button on the front panel to enter the ACQUIRE function menu 2 Press the Sequence softkey to enter the SEQUENCE function menu Figure 19 SEQUENCE Function Menu 3 Press the Segm...

Страница 61: ...and shows the frame number that displaying on the screen 3 Press the Frame No softkey and then turn the Universal Knob to select the frame to display Press the softkey to replay the waveform from the current frame to 1 Press the softkey to stop replay 6 Press the softkey to replay the waveform from the current frame to the last frame ...

Страница 62: ...d overlap to display stable waveform The following is the schematic diagram of the acquisition memory As shown in the figure below the position of the trigger event is determined by the reference time point and the delay setting Trigger Event Pre trigger Buffer Post trigger Buffer Acquisition Memory Trigger setting should be based on the features of the input signal thus you need to have some know...

Страница 63: ...is chapter Trigger Source Trigger Mode Trigger Level Trigger Coupling Trigger Holdoff Noise Rejection Trigger Type Edge Trigger Slope Trigger Pulse Trigger Video Trigger Window Trigger Interval trigger DropOut Trigger Runt Trigger Pattern Trigger ...

Страница 64: ... be used to connect external trigger signal to the EXT TRIG channel when all of the four channels are sampling data The trigger signal such as external clock and signal of the circuit to be tested will be connected to EXT and EXT 5 trigger source via the EXT TRIG connector EXT 5 trigger source attenuates the signal by a factor of 5 It extends the trigger level You can set the trigger condition wit...

Страница 65: ...e the default setting if the specified trigger conditions are not found triggers are forced and acquisitions are made so hat signal activity is displayed on the oscilloscope The Auto trigger mode is appropriate when Checking DC signals or signals with unknown levels or activity When trigger conditions occur often enough that forced triggers are unnecessary In the Normal trigger mode triggers and a...

Страница 66: ...rigger Level Knob to set the level to the waveform s 50 value immediately If AC coupling is used pushing the Trigger Level knob sets the trigger level to about 0 V The position of the trigger level for the analog channel is indicated by the trigger level icon If the analog channel is on at the left side of the display The value of the analog channel trigger level is displayed in the upper right co...

Страница 67: ...nd attenuate signals lower than 5 8 Hz Use AC coupling to get a stable edge trigger when your waveform has a large DC offset LF Reject block the DC components and reject the low frequency components lower than 2 08MHz Low frequency reject removes any unwanted low frequency components from a trigger waveform such as power line frequencies etc that can interfere with proper triggering Use LF Reject ...

Страница 68: ...200 ns but 600 ns Holdoff 200ns 600ns Trigger Point The correct holdoff setting is typically slightly less than one repetition of the waveform Set the holdoff to this time to generate a unique trigger point for a repetitive waveform Only edge trigger and serial trigger have holdoff option The holdoff time of the oscilloscope is adjustable from 100ns to 1 5s 1 Press the Stop button and then use the...

Страница 69: ...possibility of triggering on noise However this also decreases the trigger sensitivity so that a slightly larger signal is required to trigger the oscilloscope Press the Setup button on the front panel and then press the Noise Reject softkey continually to set the option to On or Off to turn on or off the noise rejection function Figure 21 Turn off the Noise Reject ...

Страница 70: ...m First stabilize the displayed waveform by removing the noise from the trigger path Second reduce the noise on the displayed waveform 1 Connect a signal to the oscilloscope and obtain a stable display 2 Remove the noise from the trigger path by setting trigger coupling to LF Reject HF Reject or turning on Noise Reject 3 Set the Acquisition option to Average to reduce noise on the displayed wavefo...

Страница 71: ...Type The oscilloscope provides abundant advanced trigger functions including various serial bus triggers Edge trigger Slope trigger Pulse trigger Video trigger Window trigger Interval trigger DropOut trigger Runt trigger Pattern trigger ...

Страница 72: ... Edge and then push the knob to confirm 3 Press the Source softkey turn the Universal Knob to select CH1 CH2 EXT EXT 5 or AC Line as the trigger source 4 Press the Slope softkey turn the Universal Knob to select the desired trigger edge rising falling or rising falling and then press down the knob to confirm The current trigger slope is displayed at the upper right corner of the screen 5 Turn the ...

Страница 73: ...rn the Universal Knob to set select Slop and then push the knob to confirm 3 Press the Source softkey turn the Universal Knob to select CH1 or CH2 as the trigger source 4 Press the Slop softkey turn the Universal Knob to set select the desired trigger edge rising or falling and then push down the knob to confirm The current trigger slope is displayed at the upper right corner of the screen 5 Press...

Страница 74: ...a time value trigger when the positive or negative slope time of the input signal is greater than the specified time value within a range of time value trigger when the positive or negative slope time of the input signal is greater than the specified lower limit of time and lower than the specified upper limit of time value outside a range of time value trigger when the positive or negative slope ...

Страница 75: ...e 5 Press the Polarity softkey to select Positive or Negative pulse that to trigger on The current trigger polarity is displayed at the upper right corner of the screen 6 Press the Limit Range softkey turn the Universal Knob to select the desired condition less than a time value trigger when the positive or negative pulse time of the input signal is lower than the specified time value For example ...

Страница 76: ...wer than the specified upper limit of time value For example for a positive pulse if you set t pulse real width 100ns and t 300ns the waveform will trigger outside a range of time value trigger when the positive or negative pulse time of the input signal is greater than the specified upper limit of time and lower than the specified lower limit of time value Figure 25 Pulse Trigger ...

Страница 77: ...turn the Universal Knob to select CH1 or CH2 as the trigger source Turn the Trigger Level Knob does not change the trigger level because the trigger level is automatically set to the sync pulse 4 Press the Standard softkey to select the desired video standard The oscilloscope supports the following video standards Standard Type Sync Pulse NTSC Interlaced BI level PAL Interlaced BI level HDTV 720P ...

Страница 78: ...0i 60 1 to 562 1 to 563 The following are exercises to familiarize you with video triggering To trigger on a specific line of video To use Custom video trigger To Trigger on a Specific Line of Video Video triggering requires greater than 1 2 division of sync amplitude with any analog channel as the trigger source The example below set to trigger on field 2 line 124 using the NTSC video standard 1 ...

Страница 79: ...the trigger source and push down the knob to confirm 4 Press the Standard softkey turn the Universal Knob to select Custom and push down the knob to confirm 5 Press the Setting softkey to enter the custom setting function menu Press the Interlace softkey turn the Universal Knob to select the desired value 6 Press the Of Field softkey turn the Universal Knob to select the desired value 7 Press the ...

Страница 80: ...m amplitude range while the lower trigger level is out of the waveform amplitude range the oscilloscope will trigger on rising edge only If the lower trigger level is within the waveform amplitude range while the upper trigger level is out of the waveform amplitude range the oscilloscope will trigger on falling edge only To set window trigger via Absolute window type 1 Press the Setup button on th...

Страница 81: ... the Universal Knob to select CH1 or CH2 as the trigger source 4 Press the Window Type softkey to select Relative 5 Press the Center Delta softkey to select Center or Delta trigger level mode then turn the Trigger Level Knob to adjust the position The Center and Delta values are displayed at the upper right corner of the screen In the trigger state message box C means Center the center value of th...

Страница 82: ...Scientific SMO1000E 82 185 Figure 28 Relative Window Trigger ...

Страница 83: ...b to select desired condition less than a time value trigger when the positive or negative pulse time of the input signal is lower than the specified time value greater than a time value trigger when the positive or negative pulse time of the input signal is greater than the specified time value within a range of time value trigger when the positive or negative pulse time of the input signal is gr...

Страница 84: ...Scientific SMO1000E 84 185 Figure 29 Interval Trigger ...

Страница 85: ...ing edge passes through the trigger level is greater than the timeout time set as shown in the figure below Trigger Trigger To set edge DropOut trigger 1 Press the Setup button on the front panel to enter the TRIGGER system function menu 2 Press the Type softkey then use the Universal Knob to select DropOut and push down the knob to confirm 3 Press the Source softkey turn the Universal Knob to sel...

Страница 86: ...e softkey then turn the Universal Knob to select DropOut and push doown the knob to confirm 3 Press the Source softkey turn the Universal Knob to select CH1 or CH2 as the trigger source 4 Press the Slope softkey to select rising or falling edge 5 Press the OverTime Type softkey to select State 6 Press the Time softkey turn the Universal Knob to select the desired value ...

Страница 87: ...ut not an upper threshold A negative runt pulse across through an upper threshold but not a lower threshold To trigger on runt pulse 1 Press the Setup button on the front panel to enter the TRIGGER system function menu 2 Press the Type softkey then turn the Universal Knob to select DropOut and push down the knob to confirm 3 Press the Source softkey turn the Universal Knob to select CH1 or CH2 as ...

Страница 88: ...ess the Time Setting softkey and then turn the Universal Knob to select the desired value 7 Press the Next Page softkey to enter the second page of the TRIGGER system function menu Press the Lower Upper softkey to select Lower or Upper trigger level and the turn the Universal Knob to set the position Figure 32 Runt Trigger ...

Страница 89: ...onfirm 3 Press each channel softkey to select Invalid High or Low Low sets the pattern to low on the selected channel A low is a voltage level that is less than the channel s trigger level or threshold level High sets the pattern to high on the selected channel A high is a voltage level that is greater than the channel s trigger level or threshold level Invalid sets the pattern to don t care on th...

Страница 90: ...Scientific SMO1000E 90 185 Universal Knob to select the desired value Figure 33 Pattern Trigger ...

Страница 91: ...RS232 CAN and LIN serial trigger and decode This chapter introduces the method of triggering and decoding these serial signals in details The contents of this chapter I2C Trigger and Decoder SPI Trigger and Decoder UART RS232 Trigger and Decoder CAN Trigger and Decoder LIN Trigger and Decoder ...

Страница 92: ...ol softkey and then select I2C by turning Universal Knob 4 Press Signal softkey to enter the SIGNAL menu as Figure 35 shows Figure 35 I2C SINGAL Menu 5 Set SCL I2C s clock signal a Press SCL softkey to select the channel that is connected to the I2C clock signal b Press first Threshold softkey to set the I2C clock signal s threshold voltage level by Universal Knob The threshold voltage level is fo...

Страница 93: ...tage level when set the trigger type to serial Tips SDA should keep stable during the whole high clock cycle otherwise it will be interpreted as a start or stop condition data transitioning while the clock is high 7 Press softkey to return previous menu ...

Страница 94: ...he oscilloscope will be triggered when SDA transitions from low to high while the SCL is high Restart the oscilloscope will be triggered when another Start condition occurs before a Stop condition No Ack the oscilloscope will be triggered when SDA data is high during any SCL s ACK bit EEPROM the trigger searches for EEPROM control byte the value is 1010xxx on the SDA bus And there is a Read bit an...

Страница 95: ...e same as set value If you have set either Data1 s or Data2 s value and the signal has a data is the same as that value If you have set both Data1 s and Data2 s value the signal should has two consecutive data the first data s value is Data1 second data value is Data2 Note If the data s value is 0xXX any data value will be matched Figure 37 On the 17th Clock Edge Figure 38 On the 26th Clock Edge ...

Страница 96: ...Data2 s value the signal should has two consecutive data the first data s value is Data1 second data value is Data2 Note If the set value is 0xXX any data value will be matched Figure 39 Data Length When SDA data s length is equal to the value of Byte Length and address s length is the same as set value the oscilloscope will be triggered Byte length is in the range of 1 to 12 bits Operation steps ...

Страница 97: ...iversal Knob to select the 7 bit or 10 bit device address b Press the Data1 or Data2 softkey and set the value about them c Press The R W bit softkey and select write frame or read frame to trigger the oscilloscope Tips If device address is 7 bit the value of address is in range of 0x00 to 0x7F If device s address is 10 bit the value of address is in range of 0x00 to 0x3FF If you select the Data L...

Страница 98: ...Figure 35 I2C Decode Menu 2 Press Display and select On to display the result of decoding 3 Press List to enter the LIST function menu 4 Press Display and choose the same options as the first step 5 Press Lines and set the number of lines by Universal Knob The range of the lines is 1 to 7 6 Press Format to change the character encoding format of the decoding s result 7 Press Scroll and turn the Un...

Страница 99: ...ins W The address of read frame is a yellow string that contains R The data of frame are white strings The lists of decoding result NO the number of frames in screen TIME timestamp the horizontal displacement between current frame and trigger position ADDRESS the address of a frame R W the type of a frame write or read DATA the value of data ...

Страница 100: ... Press Protocol softkey and then select SPI by turning Universal Knob 4 Press Signal softkey to enter the SIGNAL menu as Figure 35 shows Figure 36 SINGAL Menu 5 Set CLK clock signal a Press the CLK softkey to enter CLK menu b Press the CLK softkey to select the channel that is connected to the SPI clock signal c Press the Threshold softkey to set the SPI clock signal s threshold voltage level by U...

Страница 101: ...revious menu Figure 38 MISO Menu 7 Set MOSI a Press the MOSI softkey to enter the MOSI menu b Press the MOSI softkey to select the channel that is connected to the SPI MOSI signal c Press the Threshold softkey to set the SPI MOSI signal s threshold voltage level by Universal Knob The threshold voltage level is for decoding and it will be regard as the trigger voltage level when set the trigger typ...

Страница 102: ...CS signal is available CS high voltage level of CS signal is available Cs Type If the time between two edges of clock signal is less than or CLK Timeout equal to the value of timeout the signal between the two edges is treat as a frame The range of clock timeout is 100ns 5ms 9 Press the Bit Order softkey to select the bit order LSB or MSB ...

Страница 103: ...Out Trigger Type MOSI Master Out Slave In 6 Press the Data Length softkey and turn the Universal Knob to set the length of a data The range of data length is 4 to 96 bits 7 Set the value of the trigger data Set the value of a bit a Press the Bit Roll softkey to select a bit in data b Press the Bit Value softkey to set the value of the selected bit Set the value of all bits a Press the All Same sof...

Страница 104: ... and Decode2 2 Press Display and select On to display the result of decoding 3 Press List to enter the LIST function menu 4 Press Display and choose the same options as the first step 5 Press Lines and set the number of lines by Universal Knob The range of the lines is 1 to 7 6 Press Format to change the character encoding format of the decoding s result 7 Press Scroll and turn the Universal Knob ...

Страница 105: ...Slave Out line MOSI the decoding result of Master Out Slave In line The lists of decoding result NO the number of frames in screen TIME timestamp the horizontal displacement between current frame and trigger position MISO the decoding result of Master In Slave Out line MOSI the decoding result of Master Out Slave In line ...

Страница 106: ...SIGNAL Menu 5 Set RX 1 Press RX to select the channel that is connected to the RX signal 2 Press first Threshold key to set the RX signal s threshold voltage level by Universal Knob The threshold voltage level is for decoding and it will be regard as the trigger voltage level when set the trigger type to serial 6 Set TX a Press TX to select the channel that is connected to the TX signal b Press fi...

Страница 107: ...and turn the Universal Knob to set the desired baud rate 10 Press Data Length softkey and set byte bits 5 8 by Universal Knob 11 Press Parity Check softkey to set the type of parity check Even Odd or None 12 Press Stop Bit softkey to set the length of stop bit 1 1 5 or 2 bits 13 Press Next Page softkey 14 Press the Bit Order softkey to select the bit order LSB or MSB 15 Press Idle Level softkey to...

Страница 108: ... trigger RX or TX 6 Press the Condition softkey and set up the desired trigger condition Start the oscilloscope will be triggered at the position of start bit Stop the oscilloscope will be triggered at the position of stop bits Data the oscilloscope will be triggered when found a byte which is equal to greater or less than the specified data a Press the Compare Type softkey and choose an equality ...

Страница 109: ...Scientific SMO1000E 109 185 Figure 53 UART Trigger ...

Страница 110: ...de2 2 Press Display and select On to display the result of decoding 3 Press List to enter the LIST function menu 4 Press Display and choose the same options as the first step 5 Press Lines and set the number of lines by Universal Knob The range of the lines is 1 to 7 6 Press Format to change the character encoding format of the decoding s result 7 Press Scroll and turn the Universal Knob to view a...

Страница 111: ...result of the data transmitted The lists of decoding result NO the number of frames in screen TIME timestamp the horizontal displacement between current frame and trigger position RX the receiving channel TX the transmitting channel RX ERR Parity error or unknown error in the data received TX ERR Parity error or unknown error in the data transmitted ...

Страница 112: ...eshold voltage level by Universal Knob The threshold voltage level is for decoding and it will be regard as the trigger voltage level when set the trigger type to serial 6 Set CAN L a Press CAN L to select the channel that is connected to the CAN L signal b Press second Threshold key to set the CAN L signal s threshold voltage level by Universal Knob The threshold voltage level is for decoding and...

Страница 113: ... SMO1000E 113 185 9 Press Decode Source to select the signal to be decoded CAN_H CAN_H signal will be decoded CAN_L CAN_L signal will be decoded CAN_H CAN_L CAN_H and CAN_L are both used as the source of decoding ...

Страница 114: ...tion steps 1 Press Setup to enter the TRIGGER function menu 2 Press Type and select Serial 3 Press Protocol and select CAN 4 Press Trigger Setting to enter the CAN TRIG SET menu 5 Press Condition and select the trigger condition by Universal Knob If you select the REMOTE and ID condition a Press ID Bits to set the length of ID 11bits or 29 bits b Press Curr ID Byte and use Universal Knob to select...

Страница 115: ...al Knob to select the byte that you want to modify c Press the ID softkey and set the ID s value by Universal Knob d Press Data1 softkey and set the value of the first byte by Universal Knob e Press Data2 softkey and set the value of the second byte by Universal Knob See as figure56 the trigger condition is ID ID s value is 0x013 Baud rate is 100kb s Figure 56 CAN Trigger ...

Страница 116: ... and Decode2 2 Press Display and select On to display the result of decoding 3 Press List to enter the LIST function menu 4 Press Display and choose the same options as the first step 5 Press Lines and set the number of lines by Universal Knob The range of the lines is 1 to 7 6 Press Format to change the character encoding format of the decoding s result 7 Press Scroll and turn the Universal Knob ...

Страница 117: ...g result NO the number of frames in screen TIME timestamp the horizontal displacement between current frame and trigger position TYPE the type of frames D represents data frame R represents remote frame ID the id of frames the oscilloscope can automatically detect the length of frame s id 11 bits or 27 bits LENGTH the length of data field DATA the value of data field CRC the value of CRC Cyclic Re...

Страница 118: ...l Knob 4 Press Signal softkey to enter the SIGNAL menu as Figure 58 shows Figure 58 LIN SIGNAL Menu 5 Press Source softkey to select the channel that is connected to the LIN signal 6 Press the Threshold softkey and set the LIN signal s threshold voltage level by Universal Knob The threshold voltage level is for decoding and it will be regard as the trigger voltage level when set the trigger type t...

Страница 119: ...the selected values is detected Use the Universal Knob to select the value for the ID Data1 and Data2 1 The ID s value is the same as set value 2 If you have set either Data1 s or Data2 s value and the signal has a data is the same as that value If you have set both Data1 s and Data2 s value the signal should has two consecutive data the first data s value is Data1 second data value is Data2 Note ...

Страница 120: ... Press ID softkey and set its value by turning the Universal Knob If you select ID DATA condition a Press ID softkey and set its value by turning the Universal Knob b Press DATA1 softkey and set its value by turning the Universal Knob c Press DATA2 softkey and set its value by turning the Universal Knob Figure 59 LIN Trigger ...

Страница 121: ...e2 2 Press Display and select On to display the result of decoding 3 Press List to enter the LIST function menu 4 Press Display and choose the same options as the first step 5 Press Lines and set the number of lines by Universal Knob The range of the lines is 1 to 7 6 Press Format to change the character encoding format of the decoding s result 7 Press Scroll and turn the Universal Knob to view al...

Страница 122: ...Checksum Field is displayed in frame The list of decoding result NO the number of frames in screen TIME timestamp the horizontal displacement between current frame and trigger position ID the value of frame s Protected Identifier Field DATA LENGTH the length of Data Field ID CHECK the two check bits of Protected Identifier Field DATA the value of Data Field DATA CHECK the value of Checksum Field ...

Страница 123: ...layed and compared against other waveforms Four reference waveforms can be displayed at a time Use the appointed Variable knob and the Position knob which on the right side of the front panel to adjust the vertical scale and the vertical position of REF waveform The contents of this chapter To Save REF Waveform to Internal Memory To Display REF Waveform To Adjust REF Waveform Display To Clear REF ...

Страница 124: ...ave softkey to save the channel or math waveform to the appointed location The vertical scale information and the vertical offset of the waveform will be saved at the same time It will pop out the message Store Data Success when the waveform has been saved successfully Note The REF waveforms are non volatile The REF waveform can still be saved after restarts or default operation To Display REF Wav...

Страница 125: ...he screen The initial values display at the middle of the screen is the setup that when the reference waveform been saved Figure 42 Reference Waveform Note The vertical Variable knob and the vertical Position knob are only works for the reference waveform and the math waveform Please make a difference with the channel vertical system To Clear REF Waveform Display The oscilloscope does not have the...

Страница 126: ...th Operators To Adjust the Math Waveform Scale and Offset Note if the analog channel or the math function is cut off waveforms do not display on the screen completely the resulting math will also be cut off Units for Math Waveforms Use the channel function menu to set the unit of each channel to V or A The oscilloscope math operation includes units as below Math Operation Unit Addition or subtract...

Страница 127: ... by point and the result is displayed 1 Press the Math button on the front panel to enter the MATH function menu 2 Press the Source A and Source B softkey respectively and then turn the Universal Knob to select the source to do math operation Analog channels CH1 and CH2 and reference waveforms REFA and REFB can be used as Source A or source B 3 Press the Operation softkey and then turn the univers...

Страница 128: ...the MATH function menu 2 Press the Source A and Source B softkey respectively and then turn the Universal Knob to select the source to do math operation Analog channels CH1 and CH2 and reference waveforms REFA REFB can be used as Source A or source B 3 Press the Operation softkey and then turn the universal to select or to make multiplication or division operation The resulting math waveform is di...

Страница 129: ...cy domain When the FFT function is selected the FFT spectrum is plotted on the oscilloscope display as magnitude in dBV versus frequency The readout for the horizontal axis changes from time to frequency Hertz and the vertical readout changes from volts to dB FFT operation can facilitate the following works Measure harmonic components and distortion in the system Measure the characteristics of the...

Страница 130: ...signal resolution the poorest levels before and after the amplitude resolution similar multiplication are the basically the to the situation when no same Sine waveform with the same window is multiplied amplitude and rather similar frequencies Wide band random noise with relatively slowly changing waveform spectrum Hanning Better frequency resolution Sine periodic and narrow band poorer amplitude ...

Страница 131: ...FT waveform components To reduce the DC components set the Channel Coupling to AC To reduce the random noise and aliasing frequency components of repetitive or single pulse set the Acquisition of the oscilloscope to Average To measure FFT waveform To make cursor measurements press the Cursors button and then press the Mode softkey to select On to turn the cursors Use the X1 and X2 cursors to measu...

Страница 132: ...eration menu shows the point to point time difference and it ranges from 0 02div to 0 40div div indicates the number of the pixel points that each division has The oscilloscope has 50 pixel points per division Take 0 2div as an example 0 2 50 10 It means to calculate the ten point s discrete time derivative of the selected source and the t is the ten point s point to point time difference Figure 4...

Страница 133: ... the Trapezoidal Rule The equation is n In c0 t yi i 0 Where I integrated waveform t point to point time difference y channel 1 2 or REFA REFB co arbitrary constant i data point index The integrate operator provides an Offset softkey that lets you enter a DC offset correction factor for the input signal Small DC offset in the integrate function input or even small oscilloscope calibration errors c...

Страница 134: ...Figure 46 Integral with Offset Square Root Square root calculates the square root of the selected source Where the transform is undefined for a particular input holes zero values appear in the function output Figure 47 Square Root ...

Страница 135: ...fference between X1 and X2 T and 1 T When set cursor type to X2 X1 use Universal Knob will move the X1 and X2 cursors together The value under the menu option is the difference between the X1 and X2 cursors Y Cursors Y cursors are horizontal dotted lines that adjust vertically and can be used to measure voltage V or current A When the cursors source is the math function the unit will match the mat...

Страница 136: ...al time use the Universal Knob to move the X1 and X2 cursors to desired place If necessary set the cursor type to X2 X1 move X1 and X2 cursors together To measure vertical voltage or current use the Universal Knob to move the Y1 and Y2 cursors to desired place If necessary set the cursor type to Y2 Y1 move Y1 and Y2 cursors together To adjust the transparence of the cursors message box press the D...

Страница 137: ...option The results of the last five selected measurements are displayed at the bottom of screen and above the menu Delay parameters are under the All Measure submenu Set the Delay option to On to display all the delay parameters The contents of this chapter Type of measurements Voltage Measurements Time Measurements Delay Measurements To make automatic measurement To clear measurements To make all...

Страница 138: ... 5 Top Value of most probable higher state in a bimodal waveform 6 Base Value of most probable lower state in a bimodal waveform 7 Cmean Average of data values in the first cycle 8 Mean Average of all data values 9 Stdev Standard deviation of all data values 10 Cstd Standard deviation of all data values in the first cycle 11 Rms Root mean square of all data values 12 Crms Root mean square of all d...

Страница 139: ...on that precedes a major edge transition expressed as a percentage of Amplitude The X cursors show which edge is being measured edge closest to the trigger reference point Figure 51 Preshoot 15 L X the voltage value between the trigger point and the vertical position of the channel ...

Страница 140: ...lope 4 Width Width measured at 50 level and negative slope 16 Rise Time Duration of rising edge from 10 90 5 Fall Time Duration of falling edge from 90 10 6 BWid Time from the first rising edge to the last falling edge or the first falling edge to the last rising edge at the 50 crossing 7 Duty Ratio of positive width to period 8 Duty Ratio of negative width to period 9 Delay Time from the trigger ...

Страница 141: ... edge of channel B 4 FFR Time from the first falling edge of channel A to the first rising edge of channel B 5 FFF Time from the first falling edge of channel A to the first falling edge of channel B 6 LRR Time from the first rising edge of channel A to the last rising edge of channel B 7 LRF Time from the first rising edge of channel A to the last falling edge of channel B 8 LFR Time from the fir...

Страница 142: ...displayed are available for measurements 3 To select and display measurement parameters Press the Type softkey and then turn the Universal Knob to select the desired measurement parameter 4 Press the Universal Knob to add the measurement parameter the parameters and value will be shown above the menu and the statistics status will update 5 To turn off the statistic function press the Statistics so...

Страница 143: ...Scientific SMO1000E 143 185 Figure 54 Added the Measurement Note if the parameter does not match the measure condition it will display as ...

Страница 144: ...all the voltage time and delay parameters of the current measurement source and display the results on the screen Figure 55 All Parameters Measurement Do the following steps to make all parameters measurement 1 Press the Measure button on the front panel to enter the MEASURE function menu 2 Press the All Measure softkey to select On 3 Press the Source softkey to select the measure source CH1 CH2 M...

Страница 145: ...grid type waveform intensity grid brightness and transparence The contents of this chapter To Set Display Type To Set Color Display To Set and Clear Persistence To Clear the Display To Select Grid Type To Adjust the Waveform Intensity To Adjust the Grid Brightness The Adjust the Transparence ...

Страница 146: ... the sample points are connected by lines and displayed Normally this mode can provide the most vivid waveform to view the steep edge of the waveform such as square waveform Dots display the sample points directly You can directly view each sample point and use the cursor to measure the X and Y values of the sample point Figure 56 Vectors Display Figure 57 Dots Display ...

Страница 147: ... updates the display with new acquisitions but does not immediately erase the results of previous acquisitions All previous acquisitions are displayed with reduced intensity New acquisitions are shown in their normal color with normal intensity Do the following steps to set and clear persistence 1 Press the Display Persist button on the front panel to enter the DISPLAY function menu 2 Press the Pe...

Страница 148: ... oscilloscope will start to accumulate acquisitions again 4 To return to the normal display mode turn off persist and the previous acquisitions will be clear at once To clear the display Press the Display button on the front panel to enter the DISPLAY function menu press the Clear Display softkey to clear all the waveforms displaying on the screen and acquire and display new waveforms ...

Страница 149: ...play without grid To Adjust Waveform Intensity Do the following steps to adjust waveform intensity 1 Press the Display Persist button on the front panel to enter the DISPLAY function menu 2 Press the Next Page softkey to go to the second page of the Display function menu 3 Press the Intensity softkey and then turn the Universal Knob to select the desired value The default value is 50 and the range...

Страница 150: ...sparence Transparence can be used to adjust the transparence of the message box of cursor measure Pass Fail and all pop up menus to an appropriate value to observe the date more conveniently Under Cursor or Measure or any other menu operation if want to change the transparence of the message box do the following steps 1 Press the Display button on the front panel to enter the DISPLAY function menu...

Страница 151: ...rnal oscilloscope memory or to a USB storage device The saved setups waveforms can be recalled later The oscilloscope provides an USB Host interface on the front panel to connect an USB device for external storage The contents of this chapter Save Type Internal Save and Recall External Save and Recall Disk Management ...

Страница 152: ... not supported 4 JPG The oscilloscope saves the screen image in external memory in jpg format You can specify the file name and saving directory under the same directory using the same file name The recall of image is not supported 5 PNG The oscilloscope saves the screen image in external memory in png format You can specify the file name and saving directory under the same directory using the sam...

Страница 153: ...emory in DAT format The data of all the channels turned on can be saved in the same file The recall of Matlab file is not supported 9 To Default Key The oscilloscope saves the factory config and user set config Then you can select the default function is the factory config or user set config ...

Страница 154: ...scope to the internal memory 5 Press the Setup softkey button and then turn the Universal Knob to select the location to save The internal memory can save as many as 20 setup files from No 1 No 20 6 Press the Save softkey to save the current setup to the appointed location After a few seconds it will pop out the message Store Data success Load the specified type of file in internal memory If want ...

Страница 155: ...pecified type of file in the external USB flash device 1 Press the Save Recall button on the front panel to enter the SAVE RECALL function menu 2 Press the Type softkey to select Reference or Setup 3 Press the Recall softkey to enter the SAVE RECALL file system Figure 60 SAVE RECALL File System 4 Use the Universal Knob to select the desired location File can be stored under the root directory or i...

Страница 156: ... selected press the New softkey to turn on the interface as shown in the figure below Refer to the descriptions in To Create a new file or fold to create a new file name Figure 62 File Name Dialogue 6 Press the Enter softkey to save the current waveform to the external USB storage device ...

Страница 157: ...ave Recall button on the front panel to enter the SAVE RECALL function menu 8 Press the Type softkey to select Waveforms or Setup 9 Press the Recall softkey to enter the SAVE RECALL file system 10 Turn the Universal Knob to select the file to be recalled press the Load softkey to recall the waveform or setup ...

Страница 158: ...after the oscilloscope is connected with a USB storage device Before using external disk make sure that the USB storage device is connected correctly Execute the following operations through the disk management menu To Create a New File or Folder To Delete a File or Folder To Rename a File or Folder ...

Страница 159: ...ll button on the front to enter the SAVE RECALL function menu 2 Press the Save softkey and then turn the Universal Knob to select one of the type if select Setups please set the Save To option to External 3 Press the Save softkey to enter the SAVE RECAL file system Press the New softkey to open the interface shown as the picture below It divides into two parts name input area and keyboard area Nam...

Страница 160: ...L function menu 2 Press the Save softkey and then turn the Universal Knob to select one of the type if select Setups please set the Save To option to External 3 Press the Save or Recall softkey to enter the SAVE RECAL file system 4 Turn the Universal Knob to select the file or folder to be deleted and then press the Delete softkey Then the file or folder will be deleted ...

Страница 161: ...r advanced setting such as do self cal update and remote interface configure The contents of this chapter To View the System Status To Do Self Calibration IO Set To Enable or Disable the Sound To Specify the Language To do Pass Fail Test To Use the History Function To Print the Screen Image To Update Firmware or configuration To Do self Test To Specify the Screen Saver Time ...

Страница 162: ...tup Times record the boot strap times of the oscilloscope Software Version list the current software version of the oscilloscope Fpga Version list the current fpga version of the oscilloscope Hardware Version list the current hardware version of the oscilloscope Product Type display the product type of the oscilloscope Serial NO list the serial number of the oscilloscope Scope ID display the scope...

Страница 163: ... before the self calibration Do the following steps to do self calibration 1 Disconnect all the input channels 2 Press the Utility button on the front panel and then press the Do Self Cal softkey and the oscilloscope will pop out the message box shown as below Figure 65 Do Self Cal 3 Press the Single button on the front panel to perform the self calibration program During the calibration most of t...

Страница 164: ... select or to turn on or off the sound To Specify the Language The oscilloscope supports multiple language menu Chinese English help and prompt messages 1 Press Utility button on the front panel to enter the UTILITY Function menu 2 Press the Language softkey and then turn the Universal Knob to select the desired language Then push down the knob to select the language The languages that currently a...

Страница 165: ...eform must remain in order to comply with chosen parameters Compliance to the mask is verified point by point across the display The test results can be displayed on the screen as well as be declared through the system sound or the pulse signal output from the TRIG OUT connector at the rear panel Pass Fail test operates on displayed analog channels it does not operate on channels that are not disp...

Страница 166: ...he mask Total the frame number of the channel waveform that have been acquired It is the total of Pass and Fail 11 Press the Next Page softkey to go to the second page of the PASS FAIL function menu 12 Press the Fail softkey to select On or Off to turn on or off the function On when failed waveforms are detected the oscilloscope will stop the test and enter the STOP state At this point the results...

Страница 167: ...elect the desired value 8 Press the Location softkey to select Internal 9 Press the Save softkey to save the mask to internal memory 10 A few second later it will pop out the message Store Data Success Note the internal memory can only save one test mask save a new test mask will cover the old one Recall Test Mask from Internal Memory 1 Press the Utility button on the front panel to enter the UTIL...

Страница 168: ... the Location softkey to select External 9 Press the Save softkey to enter the file SAVE RECALL system 10 Save the test mask file refer to the Save and Recall chapter Recall Test Mask from External Memory Do the following steps to save the test mask f external memory 1 Press the Utility button on the front panel to enter the UTILITY function menu 2 Press the Next Page softkey to go to the second p...

Страница 169: ...enter the UTILITY function menu 4 Press the IO Set softkey to enter the I O SET function menu 5 Press the USB Device softkey to select USBTMC 6 Use EasyScopeX or NI Vista to communicate with the oscilloscope Do the following steps to set the oscilloscope to print the screen image 1 Connect the oscilloscope with print using a standard USB cable 2 Press the Utility button on the front panel to enter...

Страница 170: ...ess the F1 softkey the first softkey below the screen continually to go to the DHCP line then turn the Universal Knob to select Enable or Disable Enable the DHCP server in the current network will assign the network parameters such as the IP address for the oscilloscope Disable you can set the IP address subnet mask gate way manually Turn the Universal Knob to select the desired value Push the Uni...

Страница 171: ... the oscilloscope outputs a signal that can reflect the current capture rate of the oscilloscope at each trigger The maximal capture rate is 110k wfs s Pass Fail if this type is selected the oscilloscope will output a pulse signal when failed waveforms are detected This signal can be connected to other control systems to conveniently view the test results ...

Страница 172: ...ot cut off the oscilloscope otherwise the oscilloscope will not restart again 9 After finish the update the screen will pop out the message Update success please restart the DSO and you will heard a sound of buzzer 10 Restart the oscilloscope to finish the firmware update Do the following steps to update the configuration 1 Insert the USB flash driver which with the firmware and the configure file...

Страница 173: ...e softkey to go to the third page of the UTILITY function menu 4 Press the Do Self Test softkey to enter the SELFTEST function menu 5 Press the Screen Test softkey to enter the screen test interface as the picture shown below the screen display pure red Figure 68 Screen Test 6 Press the Single button on the front panel continually as it says in the picture above The screen displays green blue and ...

Страница 174: ... function menu 4 Press the Do Self Test softkey to enter the SELFTEST function menu 5 Press the Keyboard Test softkey to enter the keyboard test interface as the picture shown below Figure 69 Keyboard Test 6 To perform the knobs and the buttons test Knobs test the default value is 0 Turn left to increase the value while turn right to decrease push the knob to set the value to 0 Test every knob ran...

Страница 175: ...enter the SELFTEST function menu 5 Press the LED Test softkey to enter the keyboard test interface as the picture shown below Figure 70 LED Test 6 According to the prompting information displaying on the screen press the Single button continually to light the button lights one by one The first time to press the Single button the Run Stop button displays red and the second press the Run Stop button...

Страница 176: ... menu 2 Press the Next Page softkey to go to the second page of the UTILITY function menu 3 Press the Next Page softkey to go to the third page of the UTILITY function menu 4 Press the Screen Saver softkey and then turn the Universal Knob to select the desired screen saver time The screen saver time can be set to 1min 5min 10min 30min and 1hour Also you can select Off to turn off the screen saver ...

Страница 177: ...en enable the History function the oscilloscope will keep the stop state Press History or Stop button to turn off History function 2 Press the List softkey to turn on or off the list display The list records the timestamp of every frame It is accurate to microseconds Figure 72 History 3 Press the Frame softkey then turn the Universal Knob to select the frame to display The format of the Frame is A...

Страница 178: ... 4M 18 28K 1993 3 5M 6 1GSa s 70K 798 7M 3 140K 398 14M 1 280K 198 3 5K 3779 700K 78 7K 1891 1 4M 38 14K 945 2 8M 18 17 5K 757 7M 7 35K 378 14M 3 70K 188 35 80000 140K 93 70 77026 250MSa s 175K 74 140 65667 700K 17 350 45526 1 4M 8 500MSa s 700 29140 1 8M 6 1 4K 16945 3 5M 3 3 5K 7510 7M 1 7K 3912 14M 1 14K 1958 4 Press the softkey to replay the waveform from the current frame to 1 5 Press the sof...

Страница 179: ...s press Save Recall function key then press Recall menu select Factory Default to recall The details show as below Horizontal T div 1µS div Delay 0 S Zoom Off Format Y T Vertical Channel on off CH1 V div 1 V div Offset 0 V Coupling DC BW Limit Full Adjust Coarse Probe 1X Impedance 1 MΩ Unit V Invert Off Acquire Acquisition Normal Sinx x Sinx Mem Depth 14 Mpts Trigger Type Edge Source CH1 Slope Ris...

Страница 180: ...f Type X1 Source CH1 X1 3 5µs X2 3 5µs Save Recall Type Setups Save To Internal Setup NO 1 Utility IO Set USB Device USBTMC Aux Output Trig Out Sound Sound On Pass Fail Enable Test Off Source CH1 Operate Off Mes Display Off X Mask 0 2 Y Mask 0 2 Location Internal Fail To Stop Off Output System Setup Quick Cal Off Screen Saver 30min ...

Страница 181: ... Off V div 1 00 V div offset 0 V Source A CH1 Source B CH1 Invert Off V div 1 00 V 2 div offset 0 V 2 Source A CH1 Source B CH1 Invert Off V div 1 0 div offset 0 FFT Source CH1 Window Hanning Horizontal 1X Vertical Scale 20 dBVrms Display Split Horizontal Scale 100MHz d dt Source CH1 Vertical Scale 1 00 MV S div Vertical Offset 0 dx 0 2 div ...

Страница 182: ...Scientific SMO1000E 182 185 dt Source CH1 Offset 0 Vertical Scale 1 00 µVS div Vertical Offset 0 Source CH1 Vertical Scale 1 00 V 1 2 div Vertical Offset 0 REF Source CH1 Location REF A Display Off ...

Страница 183: ...ested 4 Check whether there are signals generated from the item to be tested you can connect the probe compensation signal to the problematic channel to determine which has problem the channel or the item to be tested 5 Resample the signal 3 The tested voltage amplitude is greater or lower than the actual value note that this problem usually occurs when probe is used Check whether the attenuation ...

Страница 184: ...IO Setting in Utility to make sure whether the setting in USB Device matches the device currently connected If needed restart the oscilloscope 8 The USB storage device cannot be recognized 1 Check whether the USB storage device can work normally 2 Make sure whether the USB interface can work normally 3 Make sure that the USB storage device being used is flash storage type This oscilloscope does no...

Страница 185: ...iving full details of the fault noticed model number and serial number 2 After receipt of your letter our service department will advise you whether it is necessary to send the instrument back to us for repairs or the adjustment is possible in your premises 3 Dispatch the instrument to us only on the receipt of our advice at our factory address securely packed in original packing duly insured and ...

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