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User Manual

Oscilloscope Bandwidth and Sample Rate

An oscilloscope's bandwidth is typically described as the lowest frequency at which input

signal sine waves are attenuated by 3 dB (- 30% amplitude error).

At the oscilloscope bandwidth, sampling theory says the required sample rate is f

= 2f

However, the theory assumes there are no frequency components above f

MAX

in this

case) and it requires a system with an ideal brick- wall frequency response.

0dB

-3dB

Attenuation

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.

/4 f

Frequency

Limiting oscilloscope bandwidth (f

) to 1/4 the sample rate (f

/4)

reduces frequency components above the Nyquist frequency (f

So, in practice, an oscilloscope's sample rate should be four or more times its bandwidth:

= 4fBW. This way, there is less aliasing, and aliased frequency components have a

greater amount of attenuation.

Aliased frequency

compoments

Attenuation

0dB

-3dB

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Содержание GPS-1000X Series

Страница 3: ...e 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 electrical shock Electrostatic P...

Страница 4: ...itions 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 of dust and or moisture in air ...

Страница 5: ...oduct 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 Hazardous protective Earth Warning Test Po...

Страница 6: ...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 junction boxes switches socket outlets in th...

Страница 7: ...e sure that no overvoltage such as that caused by thunderbolt can reach the product or else the operator might expose to danger of electric shock Installation overvoltage Category Definitions Installation overvoltage 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...

Страница 8: ...ope in a bench top or rack setting provide at least 10 cm clearance beside above and behind the instrument for adequate ventilation WARNING Inadequate ventilation may cause temperature increase which would damage the instrument So please keep the instrument well ventilated during operation and inspect the intake and fan regularly All Rights Reserved General Polytronic Systems Ltd London www gpslim...

Страница 9: ... 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 cleanser WARNING Make sure that the instrument is ...

Страница 10: ...he 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 measure function to measure the waveform parameters Display Setting Introduce how to set the display of the o...

Страница 11: ...w 10 Rear Panel Overview 11 Front Panel Function Overview 12 Horizontal 12 Vertical 13 Trigger 14 Run Control 15 Universal Knob 16 Menu 17 Help 18 User Interface 19 To Use the Security Lock 21 To Set the Vertical System 22 To Enable the Channel 23 To Adjust the Vertical Scale 24 To Adjust the Vertical Position 24 To Specify Channel Coupling 25 To Specify Bandwidth Limit 25 To Specify Probe Attenua...

Страница 12: ... 49 Trigger Source 51 Trigger Mode 52 Trigger Level 53 Trigger Coupling 54 Trigger Holdoff 55 Noise Rejection 56 Trigger Type 58 Edge Trigger 59 Slope Trigger 60 Pulse Trigger 62 Video Trigger 64 Window Trigger 67 Interval Trigger 70 DropOut Trigger 72 Runt Trigger 74 Pattern Trigger 76 Serial trigger and decode 78 IIC Trigger and Serial Decode 79 Setup for IIC Signals 79 IIC Triggering 80 IIC Ser...

Страница 13: ...asurements 124 X Cursors 124 Y Cursors 124 To Make Cursor Measurements 125 To Make Measurements 126 Type of Measurement 127 Voltage Measurements 127 Time Measurements 129 Delay Measurements 130 To Make Automatic Measurement 131 To Clear Measurement Parameters 133 To Make All Measurement 133 Display Setting 134 To Set Display Type 135 To Set Color Display 136 To Set and Clear Persistence 136 To cle...

Страница 14: ... Self Test 163 Screen Test 163 Keyboard Test 164 LED Test 165 To specify Screen Saver Time 166 Option Management 167 To Use the History Function 169 Arbitrary Waveform Generator 171 To Set Wave Type and Parameters 172 To Output Arbitrary Waveform 174 To Set Output Load 175 Recover the Default Values of Wave Gen 175 AWG Self Cal 176 Default Setup 177 Troubleshooting 183 Content of Figure Figure 1 F...

Страница 15: ...gure 27 Absolute Window Trigger 68 Figure 28 Relative Window Trigger 69 Figure 29 Interval Trigger 71 Figure 30 Edge DropOut Trigger 73 Figure 31 State DropOut Trigger 73 Figure 32 Runt Trigger 75 Figure 33 Pattern Trigger 77 Figure 34 IIC SINGAL Menu 79 Figure 35 IIC TRIGGER Menu 80 Figure 36 IIC Decode Menu 83 Figure 37 IIC Decode Result 83 Figure 38 SPI SINGAL Menu 85 Figure 39 SPI Clock Menu 8...

Страница 16: ...70 Persist Set to Infinite 137 Figure 71 Intensity Set to 100 139 Figure 72 Intensity Set to 10 139 Figure 73 SAVE RECALL File System 144 Figure 74 Select Save Location 145 Figure 75 File Name Dialogue 145 Figure 76 Input Keyboard 148 Figure 77 System Status 151 Figure 78 Do Self Cal 152 Figure 79 Pass Fail Test 154 Figure 80 LAN Setting Interface 159 Figure 81 Screen Test 163 Figure 82 Keyboard T...

Страница 17: ...terface of the oscilloscope The contents of this chapter General Inspection 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 18: ...e liable for the damage to instrument resulting from shipment The manufacturer would not be responsible for free maintenance rework or replacement of the unit 2 Inspect the instrument In case of any damage or defect or failure notify your sales representative 3 Check the Accessories Please check the accessories according to the packing lists If the accessories are incomplete or damaged please cont...

Страница 20: ...ust 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 21: ...e 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 Figure 4 To Connect to Power Supply Power socket All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 22: ...ner of the front panel to start the oscilloscope During the start up process the oscilloscope performs a series of self tests and you can hear the sound of relay switching After the self test is finished the welcome screen is displayed All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 23: ...rresponding 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 circuit point to be tested and connect the ground alligator clip of the probe to the circuit ground terminal All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 24: ...o Setup softkey 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 To avoid electric shock during the use o...

Страница 25: ...s 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 displayed is as the Perfectly compensated in ...

Страница 26: ...rol 2 Universal Knob 10 Vertical Control 3 Common Function Menus 11 Probe Comp 4 Wave Gen 12 Analog Channel Input 5 Decode Control 13 One Button shortcut for Save 6 Run Stop 14 Menu Softkey 7 Auto Setup 15 USB Host 8 Trigger Control 16 Power Button All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 27: ...rrent waveform capture rate of the oscilloscope at each trigger or a pass fail test pulse 5 AWG Output terminal Some models provide built in signal generator function The max output frequency is 25MHz 6 Safety lock Hole You can lock the instrument to a fixed location using the security lock please buy it yourself via the lock hole 7 AC Power Socket AC power input terminal The power requirements of...

Страница 28: ...e 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 expanded or compressed mode and the time base mes...

Страница 29: ... 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 accordingly Press down this knob to quickly switch ...

Страница 30: ...de 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 the trigger level to center of the waveform ...

Страница 31: ...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 press the button to enter the DECODE function menu The oscilloscope supports IIC SPI UART RS232 CAN and LIN serial bus decode press the button to enable the Wave Gen function and open the waveform function menu All Rights Reserved General Po...

Страница 32: ... turn the Universal Knob to select the desired submenu under the 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 sc...

Страница 33: ...s the button to enter the history mode In history mode it can record most 80000 frames waveforms If sequence function is enabled it only record the frames which you set the most you can set is 1024 Press the 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 acquisiti...

Страница 34: ...ormation and you can recall then to help you operate the oscilloscope when you need Press the any buttons for 2 seconds to enter the on line help All submenus of every main menu have their help information Figure 8 Help Message All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 35: ...ncludes Ready Auto Stop Arm Trig d 4 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 2 0 ns to 50 s 5 Trigger Position Turn the Horizontal Position Knob to adjust the parameter Push the knob to set the value to 0 automatically 6 Trigger Delay Label Indicate the trigger delay on t...

Страница 36: ...0 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 or 50Ω Channel coupling display the current channel coupling of the channel Channel coupling that available DC AC and GND Ve...

Страница 37: ...scilloscope 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 Figure 10 To Use the Security Lock All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 38: ...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 Invert a Waveform All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 39: ... 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 horizontal time base and the trigger mode according...

Страница 40: ...on 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 quickly switch between Coarse and Fine adjustmen...

Страница 41: ...bel 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 test can pass the channel When the bandwidth...

Страница 42: ... 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 for general purpose measurements The higher impedance minimizes the loading effect of the oscilloscope on th...

Страница 43: ... desired unit V or A The default setup is V To Invert a Waveform When Invert is set to On the voltage values of the displayed waveform are inverted Invert affects how a channel is displayed and it keeps the trigger settings Inverting a channel also changes the result of any math function selected and measure function 1 Press CH1button on the front panel to enter the CH1 function menu 2 Press the N...

Страница 44: ...ntroduces 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 45: ...r 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 knob lets you zoom into acquired data All Rights...

Страница 46: ...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 available depends on the time div selected and ...

Страница 47: ...creen 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 press the Run Stop button again Use Roll mo...

Страница 48: ... 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 displayed relative to the trigger point is m...

Страница 49: ...e 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 50: ...illoscope 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 triggering immediately the trigger circuitry is armed...

Страница 51: ...heory 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 All Rights Reserved General Polytronic Systems Ltd London www gpsl...

Страница 52: ...e 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 the jitter on fast edge 3 Waveform Leakage w...

Страница 53: ...ency 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 fS 4 fN fS Frequency Limiting oscilloscope bandwidth fBW to 1 4 the sample rate fS 4 reduces frequency components above the Nyquist frequency fN So ...

Страница 54: ... 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 is up to 14 Mpts The relation of memory dep...

Страница 55: ...orm 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 56: ...lation 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 Sinx X softkey to select Sinx 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 signals such as square wave Sinx Connecting the samp...

Страница 58: ... 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 mode It is the default acquisition mode Fig...

Страница 59: ... 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 60: ...he 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 Random Noise Normal Mode All Rights Reserved Ge...

Страница 61: ... 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 averaging methods The former uses Waveform Av...

Страница 62: ...s 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 above the phase deviation angle is obtained t...

Страница 63: ...NTAL 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 Segments Set softkey and then turn the Universal Knob to select the desired value The Segments Set display format is A B A is the f...

Страница 64: ...he screen 3 Press the Frame No softkey and then turn the Universal Knob to select the frame to display 4 Press the softkey to replay the waveform from the current frame to 1 5 Press the softkey to stop replay 6 Press the softkey to replay the waveform from the current frame to the last frame All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 65: ...lowing 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 knowledge of the signal under test to quickly ca...

Страница 66: ...er 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 67: ...trigger input External trigger source can 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 le...

Страница 68: ...er 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 acquisitions only occur when the specified tr...

Страница 69: ...evel 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 corner of ...

Страница 70: ...ll the DC components and 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 tri...

Страница 71: ...shown below set the holdoff time to be 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...

Страница 72: ...is 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 73: ...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 waveform All Rights Reserved General Polytronic Sy...

Страница 74: ...nced 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 75: ...tkey turn the Universal Knob to set select 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 up...

Страница 76: ...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 Lower Upper softkey to select the Lower or U...

Страница 77: ...gative 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 time of the input signal is greater than the...

Страница 78: ...tive 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 for a positive pulse if you set t pulse real ...

Страница 79: ...lue 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 All Rights Reserved General Polytronic Systems Ltd London www...

Страница 80: ... 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 50 Progressive Tri level HDTV 720P 60 Progre...

Страница 81: ...ercises 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 Press the Setup button on the front panel to...

Страница 82: ...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 Sync softkey to enter the TRIG ON menu to set...

Страница 83: ...el 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 the front panel to enter the TRIGGER function m...

Страница 84: ...he 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 the lower and upper trigger levels D means Delt...

Страница 86: ...e 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 greater than the specified lower limit of time ...

Страница 88: ...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 select CH1 or CH2 as the trigger source The curr...

Страница 89: ...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 Figure 31 State DropOut Trigger All Rights Reserved General Polytronic Systems Ltd London...

Страница 90: ...niversal 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 the trigger source 4 Press the Polarity softkey to select Positive or Negative pulse to trigger 5 Press the Limit Range softkey turn the Universal Knob to select the desired condition or 6 Press the Time Setting softkey and then turn the Universal Knob to sel...

Страница 92: ...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 the selected channel Any channel set to d...

Страница 93: ...t for a time within a range of values Out of Range when the pattern is present for a time outside of range of values 7 Press the Holdoff Close softkey to turn on the Holdoff function then turn the Universal Knob to select the desired value Figure 33 Pattern Trigger All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 94: ...ode This chapter introduces how to set every kind of serial trigger and decode in details The contents of this chapter IIC Trigger and Decoder SPI Trigger and Decoder UART RS232 Trigger and Decoder CAN Trigger and Decoder LIN Trigger and Decoder All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 95: ... with the Universal Knob and then push down the Universal Knob to confirm Figure 34 IIC SINGAL Menu 4 Press Signal softkey to enter the IIC SIGNAL menu 5 For both the SCL serial clock and SDA serial data signals a Connect an oscilloscope channel to the signal in the device under test b Press the SCL or SDA softkey then turn the Universal Knob to select the channel for the signal c Press the corres...

Страница 96: ...hile the SCL clock is high For triggering purposes including frame triggers a restart is treated as a start condition Stop Condition The oscilloscope triggers when data SDA transitions from low to high while the clock SCL is high Restart The oscilloscope triggers when another start condition occurs before a stop condition Missing Acknowledge The oscilloscope triggers when SDA data is high during a...

Страница 97: ...me is in the format Frame Start Address byte 1 Write Address byte 2 Ack Data The oscilloscope triggers on a read or write frame in 10 bit addressing mode on the 26th clock edge if all bits in the pattern match Data 2 shows oxXX For triggering purposes a restart is treated as a start condition Frame Start Address byte 1 Write Address byte 2 Ack Data Ack Data The oscilloscope triggers on a read or w...

Страница 98: ...ring on a read write frame the oscilloscope will trigger after the start address read write acknowledge and data events occur If don t care is selected 0xXX or 0xXXX for the address the address will be ignored The trigger will always occur on the 17th clock for 7 bit addressing or 26th clock for 10 bit addressing b Press the Data1 or Data2 softkey and turn the Universal Knob to select the 8 bit da...

Страница 99: ...splay the decode line on the display 4 Press the List softkey to enter the LIST function menu 5 Press the Display softkey and choose On to display the decode list on the display 6 Press the Scroll softkey and the Lines softkey to set the position of the cursor and the line number of the list with the Universal Knob The range of the Lines is 1 to 7 Figure 37 IIC Decode Result All Rights Reserved Ge...

Страница 100: ... the associated frame when there is insufficient space within frame boundaries Blue vertical bars indicate you need to expand the horizontal scale and run again to see decode Red dots in the decode line indicate that more data can be displayed Scroll or expand the horizontal scale to view the data Interpreting IIC Lister Data In addition to the standard Time column the IIC Lister contains these co...

Страница 101: ...l 2 could not be set to SPI at the same time And the default setup of Serial 2 is SPI 4 Press the Signal softkey to enter the SPI SIGNAL menu Figure 38 SPI SINGAL Menu 5 Press the CLK softkey to enter SPI CLK menu Figure 39 SPI Clock Menu In the SPI Clock Menu a Press the CLK softkey then turn the Universal Knob to select the channel connected to the SPI serial clock line b Press the Threshold sof...

Страница 102: ...key to open the SPI CS menu Figure 42 SPI CS Menu In the SPI CS menu a Press the Cs Type softkey to select a framing signal that the oscilloscope will use for determining which clock edge is the first clock edge in the serial stream You can set the oscilloscope to trigger during a high chip select CS a low chip select CS or after a Timeout period during which the clock signal has been idle If the ...

Страница 103: ... the chip select signal threshold voltage level The threshold voltage level is used in decoding and it will become the trigger level when the trigger type is set to the selected serial decode slot 12 Press the Idle Level softkey to set idle level to High or Low according to the input signal 13 Press the Bit Order softkey to set the bit order to LSB or MSB according to the input signal All Rights R...

Страница 104: ...softkey and turn the Universal Knob to set the number of bits in the serial data string The number of bits in the string can be set anywhere from 4 bits to 96 bits The data values for the serial string are displayed in the MISO MOSI data string in the waveform area 6 For each bit in the MISO MOSI data string a Press the Bit Roll softkey then turn the Universal Knob to select the bit location As yo...

Страница 106: ... softkey and choose On to display the decode line on the display 4 Press the List softkey to enter the LIST function menu 5 Press the Display softkey and choose On to display the decode list on the display 6 Press the Scroll softkey and the Lines softkey to set the position of the cursor and the line number of the list with the Universal Knob The range of the Lines is 1 to 7 Figure 46 SPI Decode A...

Страница 107: ...u need to expand the horizontal scale and run again to see decode Red dots in the decode line indicate that there is data that is not being displayed Scroll or expand the horizontal scale to view the information Aliased bus values undersampled or indeterminate are drawn in pink Unknown bus values undefined or error conditions are drawn in red Interpreting SPI Lister Data In addition to the standar...

Страница 108: ...ect the signal threshold voltage level The threshold voltage level is used in decoding and it will become the trigger level when the trigger type is set to the selected serial decode slot 6 Press the UP softkey to return to the DECODE menu 7 Press the Configure softkey to open the UART RS232 BUS CONFIG menu Set the following parameters Figure 48 BUS CONFIG Menu Baud Press the Baud softkey then pre...

Страница 109: ...Press the Source Type softkey to select TXDATA or RX DATA 5 Press the Trigger softkey and set up the desired trigger condition Start The oscilloscope triggers when a start bit occurs Stop Triggers when a stop bit occurs on Rx vice under test uses 1 1 5 Data Triggers on a data byte that you specify For use when the device under test data words are from 5 to 8 bits in length a Press the Compare Type...

Страница 110: ...ay the decode line on the display 3 Press the List softkey to enter the LIST function menu 4 Press the Display softkey and choose On to display the decode list on the display 5 Press the Scroll softkey and the Lines softkey to set the position of the cursor and the line number of the list with the Universal Knob The range of the Lines is 1 to 7 Figure 52 UART Decode All Rights Reserved General Pol...

Страница 111: ... again to see decode When the horizontal scale setting does not permit the display of all available decoded data red dots will appear in the decoded bus to mark the location of hidden data Expand the horizontal scale to allow the data to display An unknown undefined bus is shown in red Interpreting UART RS232 Lister Data In addition to the standard Time column the UART RS232 Lister contains these ...

Страница 112: ...s used in decoding and it will become the trigger level when the trigger type is set to the selected serial decode slot 7 Press the Back key to return to the DECODE menu 8 Press the Configure softkey to enter the BUS CONFIG menu 9 Press the Baud softkey then turn the Universal Knob to select the baud rate that matches your CAN bus signal The CAN baud rate can be set to predefined baud rates from 5...

Страница 113: ...n remote or data frames matching the specified ID a Press the ID Bits softkey to select the ID number 11bits or 29 bits b Press the Curr ID Byte softkey and turn the universal to select the byte to be set c Press the ID softkey and then turn the universal to set the ID ID DATA The oscilloscope will trigger on data frames matching the specified ID and data a Press the ID Bits softkey to select the ...

Страница 115: ...er the LIST function menu 4 Press the Display softkey and choose On to display the decode list on the display 5 Press the Scroll softkey and the Lines softkey to set the position of the cursor and the line number of the list with the Universal Knob The range of the Lines is 1 to 7 The picture below triggers on ID the ID is 0x013 Figure 55 CAN Decode All Rights Reserved General Polytronic Systems L...

Страница 116: ... vertical bars indicate you need to expand the horizontal scale and run again to see decode Red dots in the decode line indicate that there is data that is not being displayed Scroll or expand the horizontal scale to view the information Aliased bus values under sampled or indeterminate are drawn in pink Interpreting CAN Lister Data In addition to the standard Time column the CAN Lister contains t...

Страница 117: ...GNAL menu Figure 56 LIN SIGNAL Menu 5 Press Sources softkey then select the channel for the LIN signal 6 Press the Threshold softkey then turn the Universal Knob to select the LIN signal threshold voltage level The threshold voltage level is used in decoding and it will become the trigger level when the trigger type is set to the selected serial decode slot 7 Press the UP key to return to the DECO...

Страница 118: ...IG SET menu 4 Press the Trigger Setting softkey then turn the Universal Knob to select the trigger condition Start The oscilloscope triggers when a start bit occurs ID Frame ID The oscilloscope triggers when a frame with an ID equal to the selected value is detected Use the Universal Knob to select the value for the Frame ID ID Data Frame ID and Data The oscilloscope triggers when a frame with an ...

Страница 119: ...code line on the display 3 Press the List softkey to enter the LIST function menu 4 Press the Display softkey and choose On to display the decode list on the display 5 Press the Scroll softkey and the Lines softkey to set the position of the cursor and the line number of the list with the Universal Knob The range of the Lines is 1 to 7 Figure 59 LIN Decode All Rights Reserved General Polytronic Sy...

Страница 120: ...t space within frame boundaries Pink vertical bars indicate you need to expand the horizontal scale and run again to see decode Red dots in the decode line indicate that there is data that is not being displayed Scroll or expand the horizontal scale to view the information Unknown bus values undefined or error conditions are drawn in red Interpreting LIN Lister Data In addition to the standard Tim...

Страница 121: ...g items To Connect the Digital Probes to the Device under Test Acquiring Waveform Using the Digital Channels To Change the Display Type of the Digital Channels To Switch a Single Channel On or Off To Switch All Digital Channels On or Off To Change the Logic Threshold for Digital Channels To Reposition a Digital Channel To Display Digital Channels as a Bus All Rights Reserved General Polytronic Sys...

Страница 122: ...yed so you can connect it only one way You do not need to power off the oscilloscope The two ports of the digital probe cable are the same that you can connect them using the way you like 3 Connect a fly line to one of the digital probe ground pin connect a grabber to the fly line and then connect the grabber to ground in the device under test The ground lead improves signal fidelity to the oscill...

Страница 123: ...is above the threshold the oscilloscope stores a 1 in the sample memory otherwise it stores a 0 To Change the Display Type of the Digital Channels 1 Press the Digital button on the front panel to open the DIGITAL function menu Figure 61 Digital Function Menu 2 Press the Channel High softkey to select Low or Middle or High display type If eight channel and low eight channels was opened Low cannot b...

Страница 124: ... Type Figure 64 High Display Type The display type control lets you spread out or compress the digital traces vertically on the display for more convenient viewing All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 125: ...hen press the Channel Group softkey to select or to switch all digital channels on or off Also under the DIGITAL function menu press the Digital button on the front panel will switch all digital channels off To Reposition a Digital Channel 1 Press the Digital button on the front panel to open the DIGITAL function menu and display the digital channel waveforms 2 Press the fourth softkey to select S...

Страница 126: ...n the set threshold are high 1 and values less than the set threshold are low 0 If the D0 D7 softkey is set to Custom press the Custom softkey then turn the Universal Knob to select the desired value and push down the knob to confirm To Display Digital Channels as a Bus Digital channels may be grouped and displayed as a bus with each value displayed at the bottom of the display in hex or binary Yo...

Страница 127: ... Universal Knob to select such as D0 D7 and then press the Channel Group softkey to select On or Off to include or exclude all digital channels Under the DIGITAL function menu an status indicator is displayed in the status line at the bottom of the display Light blue shows the digital channel is included in the bus while black shows it is excluded in the bus Under the DIGITAL function menu press t...

Страница 128: ...our 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 Waveform Display All Rights Reserved General...

Страница 129: ...The source includes analog channel and math waveforms 4 Press the Save 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 To Display REF Waveform To the following steps to display REF w...

Страница 130: ...ob to adjust the vertical scale and position of the reference waveform The vertical scale and position information display at the middle of the screen The initial values display at the middle of the screen is the setup that when the reference waveform been saved Figure 68 Reference Waveform To Clear REF Waveform Display The oscilloscope does not have the Clear option under the REF WAVE function me...

Страница 131: ...eled with M You can use cursors to measure it The contents of this chapter Units for Math Waveforms Math Operators To Adjust the Math Waveform Scale and Offset 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 subtraction V A multiplication V 2 A 2 or W Volt Amp di...

Страница 132: ...s 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 universal to select or to make addition or subtract...

Страница 133: ...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 displayed in white and labeled with M 4 If you...

Страница 134: ...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 noise in DC power Analyze vibration All Rig...

Страница 135: ...e basically the same Sine waveform with the same amplitude and rather similar frequencies Wide band random noise with relatively slowly changing waveform spectrum Hanning Better frequency resolution poorer amplitude resolution Sine periodic and narrow band random noise Hamming A litter bit better frequency resolution than Hanning Transient or short pulse the signal levels before and after the mult...

Страница 136: ...splayed in the same window to view the frequency spectrum more clearly and to perform more precise measurement Figure 69 FFT Waveform In Split Mode 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 measure frequency values and the difference between two frequency values ΔX Use t...

Страница 137: ...ction operation 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 Δ t is the ten point s point to point time differenc...

Страница 138: ...oint 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 can cause the integrate function output to ramp up or down This DC offset correction lets you le...

Страница 139: ...uare 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 73 Square Root All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 140: ... cursor type to X1 X2 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 math function Y1 cursor is the top default posit...

Страница 141: ...1 and X2 cursors to desired place If necessary set the cursor type to X1 X2 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 Y1 Y2 move Y1 and Y2 cursors together To adjust the transparence of the cursors message box press the Display Persist button and go to the second p...

Страница 142: ... 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 parameters measurement All Rights Reserved ...

Страница 143: ... 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 data values in the first cycle 13 Overshoot Ov...

Страница 144: ...essed as a percentage of Amplitude The X cursors show which edge is being measured edge closest to the trigger reference point Figure 77 Preshoot 15 L X the voltage value between the trigger point and the vercital position of the channel All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 145: ...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 to the first transition at the 50 crossing 1...

Страница 146: ... 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 first falling edge of channel A to the last ris...

Страница 147: ...o 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 softkey to select Off The measurement display ...

Страница 148: ...132 User Manual Note if the parameter does not match the measure condition it will display as Figure 80 Added the Measurement All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 149: ... the current measurement source and display the results on the screen Figure 81 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 MATH REFA REFB All Rights Reserved General Po...

Страница 150: ... 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 151: ...d 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 82 Vectors Display Figure 83 Dots Display All Rights Reserved General Polytronic Systems Ltd London www gpslimited...

Страница 152: ...t 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 Persist softkey then turn the Universal Knob to...

Страница 153: ...itions 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 All Rights Reserved General Polytronic Systems Ltd London...

Страница 154: ...play 2X2 grid type Display 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 val...

Страница 155: ...ustment affects analog channel waveforms only not math waveforms reference waveforms digital waveforms etc Figure 86 Intensity Set to 100 Figure 87 Intensity Set to 10 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 156: ...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 2 Press the Next Page softkey to go to the ...

Страница 157: ... 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 158: ... same file At recall the data will be displayed on the screen directly 3 Picture The oscilloscope saves the screen image in external memory in bmp 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 4 CSV The oscilloscope saves the waveform data in external memory in CSV format The stored files contain the...

Страница 159: ...oftkey to select Internal to save the current setup of the oscilloscope 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 s...

Страница 160: ...ash 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 Waveforms or Setup 3 Press the Recall softkey to enter the SAVE RECALL file system Figure 88 SAVE RECALL File System 4 Use the Universal Knob to select the desired location File can be stored under the root directory or in a certain folder under the root directory ...

Страница 161: ...he 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 90 File Name Dialogue 6 Press the Enter softkey to save the current waveform to the external USB storage device All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 162: ...r 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 163: ...B 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 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 164: ...lower case Name Input Area Keyboard Area Upper lower Case Switch Figure 91 Input Keyboard 4 To delete the name in the name input area press the Delete softkey continuously to delete the character one by one 5 To input a new name press the Switch To softkey to switch to the keyboard area The default input method is lower case 6 Press the or the softkey or turn the Universal Knob to select aA and th...

Страница 165: ...the file or folder will be deleted To rename a file or a folder This operation is only valid in external storage 1 Press the Save Recall button on the front to open the SAVE RECALL function menu 2 Press the Type 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 USB storage de...

Страница 166: ...he 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 Enable Quick Cal To Update Firmware or configuration To Do self Test To Specify the Screen Saver Time Option Management To Set and Display Data Time All Rights Reserved General Polytr...

Страница 167: ... 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 identification of the oscilloscope Figure 9...

Страница 168: ... 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 93 Do Self Cal 3 Press the Single button on the front panel to perform the self calibration program During the calibration most of the keys are disabled 4 When the self calibrat...

Страница 169: ...ecify 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 available are Simplified Chinese Traditional ...

Страница 170: ...sen 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 displayed Figure 94 Pass Fail Test All Rights Res...

Страница 171: ...orm that matches the 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...

Страница 172: ... Y Mask softkey and then turn the Universal Knob to select 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 Recall Test Mask from Internal Memory 1 Press the Utility button on the front panel to enter the UTILITY function menu 2 Press the Next Page soft...

Страница 173: ...ress 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 page of the UTILITY function menu 3 Press the...

Страница 174: ...O 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 the UTILITY function menu 3 Press the IO Set...

Страница 175: ...e 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 Universal Knob to change item horizontally Press...

Страница 176: ...g Out or Pass Fail The default setup is Trig Out Trig Out if this type is selected 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 system...

Страница 177: ...Press the Quick Cal to select On If the Quick Cal has been set to On before powering on and the current vertical scale is 2mV or 5mV of any channel the oscilloscope will perform the quick calibration procedure when it powers on During the calibration most of the buttons are disabled Also when the Quick Cal is On and the current vertical scale is 2mV or 5mV of any channel the oscilloscope will perf...

Страница 178: ...cilloscope 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 files inside into the USB host interface on the ...

Страница 179: ...ITY 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 96 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 red again It is easy to check chromatic aberr...

Страница 180: ...key to enter the SELFTEST function menu 5 Press the Keyboard Test softkey to enter the keyboard test interface as the picture shown below Figure 97 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 randomly Keys test the first time to press the ...

Страница 181: ...LED Test softkey to enter the keyboard test interface as the picture shown below Figure 98 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 displays green Then the other button lights ...

Страница 182: ...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 function Figure 99 Screen Saver Interface 5 P...

Страница 183: ...he Next Page softkey to go to the third page of the UTILITY function menu 4 Press the Options softkey to enter the OPTION function menu Figure 100 OPTION Function Menu 5 Press the Type softkey then turn the Universal Knob to select the module to be installed and push down the knob to confirm 6 Press the License softkey to enter the LABEL function menu to input the license Figure 101 LABEL Function...

Страница 184: ... to confirm the characters and the oscilloscope will activate the corresponding option using the license key currently input Press the Delete softkey to delete the incorrect character 7 Press the Information softkey to view the option information Figure 102 Option Information All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 185: ...ry and 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 103 History 3 Press the Frame softkey then turn the Universal Knob to select the frame to display The format of the Frame is A B A is the frames number that displaying on the screen and B is the maximal frame...

Страница 186: ...79 700K 78 7K 1891 1 4M 38 14K 945 2 8M 18 17 5K 757 7M 7 35K 378 14M 3 70K 188 500MSa s 35 80000 140K 93 70 77026 175K 74 140 65667 700K 17 350 45526 1 4M 8 700 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 softkey to stop replay 6 Press the softkey to replay the waveform from the current fra...

Страница 187: ...sine square ramp pulse DC noise cardiac Gauss pulse exp rise exp fall and Arbitrary waveforms The contents of this chapter To Set Wave Type and Parameters To Output Arbitrary Waveform To Set Output Load To Recover Default Setup To Do AWG Self Cal All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 188: ...e other parameters Wave Type Character Frequency Range Amplitude High Z Offset High Z Sine Use the Universal Knob to adjust the Frequency Frequency Fine Period Period Fine Amplitude Amplitude Fine High Level High Level Fine Offset Offset Fine Low Level Low Level Fine value 1uHz 25MHz 4mV 6V 3 0V Square Use the Universal Knob to adjust the Frequency Frequency Fine Period Period Fine Amplitude Ampli...

Страница 189: ...d Fine Amplitude Amplitude Fine High Level High Level Fine Offset Offset Fine Low Level Low Level Fine value 1uHz 5MHz 4mV 6V 3 0V Exp Rise Use the Universal Knob to adjust the Frequency Frequency Fine Period Period Fine Amplitude Amplitude Fine High Level High Level Fine Offset Offset Fine Low Level Low Level Fine value 1uHz 5MHz 4mV 6V 3 0V Exp Fai Use the Universal Knob to adjust the Frequency ...

Страница 190: ...Send Wave Dialogue 5 Click the Store location area and select the location to keep the arbitrary waveform 6 Click the Send option then the oscilloscope will pop out the message Dealing with waveform data please wait 7 A few seconds later the oscilloscope will prompt Succeed to save waveform and it will enter the WAVEFORM function menu the Wave Type sets to ArbX the location chose above Figure 105 ...

Страница 191: ...he output load of the Wave Gen must match with the oscilloscope or the amplitude of the signal will be incorrect Recover the Default Values of Wave Gen 1 Press the Wave Gen button on the front panel to enter the WAVEFORM function menu 2 Press the Setting softkey to enter the SETTING function menu 3 Press the Default softkey to recover the default values of Wave Gen Sine 1 000 KHz 4 000Vpp 0 0mVdc ...

Страница 192: ...l to enter the WAVEFORM function menu 2 Press the Setting softkey to enter the SETTING function menu 3 Press the AWG Self Cal softkey to perform AWG self calibration program Figure 107 AWG Self Cal 4 When the self calibration program is finish press the Run Stop button on the front panel to exit the interface according to the information on the screen All Rights Reserved General Polytronic Systems...

Страница 193: ... 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 Rising Holdoff Off Coupling DC Noise Rejest Off Mode Auto Display Type Vectors Color Off All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 194: ... 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 Math All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 195: ... 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 dt Source CH1 Offset 0 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 196: ...l 1 Serial I2C Display Off List Off Serial 2 Serial SPI Display Off List Off I2C SCK CH1 Threshold 1 60V SDK CH2 Threshold 1 60V Address 7 位 SPI CLK CH1 Threshold 1 60V Edge Select Rising MISO CH2 Threshold 1 60V MOSI CH1 Threshold 1 60V CS Type CS CS CH2 Idle Level Low Bit Order LSB Data Length 8 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 197: ...old 1 60V Bound 100kb S Decode Source CAN_H LIN Source CH1 Threshold 1 60V Baud 2400 Wave Gen Function Off Wave Type Sine Output Load High Z Sine Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc Square Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc Duty 50 Ramp Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc Symmetry 50 All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 198: ...448 mV Mean 0 mV Cardiac Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc Gaus Pulse Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc Exp Rise Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc Exp Fall Frequency 1 KHz Amplitude 4 Vpp Offset 0 Vdc All Rights Reserved General Polytronic Systems Ltd London www gpslimited com ...

Страница 199: ...ated 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 coefficient of the channel complies with the ...

Страница 200: ...he 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 not support hardware storage type 4 Make sure whether the system of the USB stor...

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