background image

 

 

o

 

Detecting a „forbidden area“, e.g. in digital technology 
(Single-Shot/Run-Operation) 

 

 
 

 

Edge, rising / Edge, falling 
If this mode is activated, an exceeding or not meeting the indi-
cated threshold is awaited (similar as in threshold-trigger). 
However, in the edge-mode the threshold must be crossed. A 
signal that is statically too high or too low does not activate 
the trigger. The edge-mode may be used for reiterating AC sig-
nals in order to create still images. 
 

o

 

Display of the rising edge (Run-Operation) 

 

 

o

 

Display of the falling edge (Run-Operation) 

 

 

 

Summary of Contents for MEphisto Scope

Page 1: ...Meilhaus Electronic Manual MEphisto Scope UM202 UM203 2 Channel USB Universal Measuring Box Instrument with MEphistoLab2 Software...

Page 2: ...The information contained in this manual has been reviewed with great care and is believed to be complete and accurate Meilhaus Electronic assumes no responsibility for its use any infringements of pa...

Page 3: ...t 14 1 4 5 Logic Analyzer 15 1 4 6 Digital Datalogger 16 1 4 7 Data Display 17 1 4 8 Set up Offline Mode 17 1 4 9 Script Editor Script Menu 18 1 5 System Requirements 19 1 5 1 Supported Hardware 19 1...

Page 4: ...2 3 11 Offset 36 2 2 3 12 Trigger 36 2 2 3 12 Values 37 37 2 2 3 13 Analog Meter 38 2 2 3 14 Panels 39 2 2 3 15 Digital I O 39 2 2 3 16 Script Editor 41 2 3 Programming interface 42 2 3 1 General 42...

Page 5: ...A Specifications 52 B Error messages 59 C Pinouts 61 D Accessories 62 E Technical Questions 63 E1 Hotline 63 F Index 64...

Page 6: ...Requirements MEphisto Scope is intended to be used by qualified profession als Use a power supply that conforms to the specifications of the MEphisto Scope Do not use the device without its housing o...

Page 7: ...sing the earthing connection on the back side The measuring of voltages higher than 42 V especially power sup ply voltages may only be performed by qualified professionals If do ing so use a high volt...

Page 8: ...to use the MEphisto Scope 26 pin D sub female socket USB connection cable type A type B UM203 additionally mains connector ATTENTION SD memory card not included in delivery Optional accessories ME pr...

Page 9: ...rogrammable for each line as in put output Model UM203 stand alone data logger Recording of analog and digital data onto SD card Up to 100 kS s depending on card Start measurement by plugging in the S...

Page 10: ...ee chapter 1 4 1 p 12 Volt meter 2 channels ACeff AC DC with up to 6 virtual pointer instruments see chapter 1 4 2 p 12 Analog data logger 2 analog channels max 100 kS s volt age range 10 V see chapte...

Page 11: ...ues accurately In such cases the oscilloscope ap proximates the setting to the desired value After that the MEphistoLab corrects the settings that consequently display the real value Please always fol...

Page 12: ...is 1 4 2 Voltmeter With the help of a virtual pointer element the total RMS value the DC or AC voltage component of the input signal may be displayed AC voltages may have very high peak voltages even...

Page 13: ...wo measurement channels They show signals with a signal frequency of up to 50 kHz Image frequencies measured above this limit do not exist in reality This should be kept in mind when defining a comple...

Page 14: ...1 4 4 Digital Input Output The MEphisto Scope has 24 Digital I Os Each channel may be con figured independently as input or output When you turn on the device all channels are configured as input...

Page 15: ...doubt an observation through the oscilloscope may shed light but only up to a frequency of 500 kHz All digital channels use a common time basis In the Logic Analyzer mode the channels D16 to D22 are r...

Page 16: ...n case of doubt an observation with the oscilloscope may shed light but only up to a frequency of 500 kHz All digital channels use a common time base In the Digital Data logger mode the channels D16 t...

Page 17: ...nto an SD card that has a capacity of up to 2 GB After applying the supply voltage the MEphisto Scope uses the settings that were last made online In serting the SD card starts the measurement process...

Page 18: ...set a valid sampling rate on the SD card If necessary the device will reduce the rate auto matically before starting the measurement Offline modes vary depending on the firmware version of the device...

Page 19: ...the model UM203 an external power supply with 5V 500 mA is required In this mode the device may also be supplied with a powered USB hub without connection to the PC 1 5 2 SD Cards 1 5 2 1 General Info...

Page 20: ...on certain conditions The MEphisto Scope does not support these conditions We recom mend to test the measuring condition Over speed may produce in correct values that occur separately or in blocks eve...

Page 21: ...uirements System Requirements for MEphisto Scope UM202 UM203 und MEphistoLab2 Windows 7 through Windows 10 as well as driver software ME iDS Please note the corresponding README files 1 7 Trigger Mode...

Page 22: ...mode a window is defined by means of an upper and a lower threshold The trigger event occurs as soon as the signal enters or leaves the window It is not important if the signal enters through the upp...

Page 23: ...i cated threshold is awaited similar as in threshold trigger However in the edge mode the threshold must be crossed A signal that is statically too high or too low does not activate the trigger The ed...

Page 24: ...dden rising indicates an error Secondly this mode is suitable to re alize a frequency detection The MEphisto Scope has a limited measurement range In order to prevent uncontrolled fluctuations in the...

Page 25: ...or fall ing edge is awaited However the decisive factor in this case is not one of the analog signals but the digital signal at I O port D23 pin 26 As with the analog edge trigger only a logical edge...

Page 26: ......

Page 27: ...n Automatically install software recommended Click on Continue Possible noti fications from Windows pointing out that the driver is not certified my Microsoft may be ignored The system driver is insta...

Page 28: ...may be integrated in most different programs No special programming skills are required to do this 2 2 1 Project Management The project management allows you to save or load current set tings All set...

Page 29: ...pe will be used Via FFT window the window method to be used in the calculation of the FFT analysis may be defined The window type Hanning is the standard type and should only be changed if you are kno...

Page 30: ...subfunctions may be selected via the Win dows menu 2 2 3 1 Logger The menu Logger displays the logger that records internal events The configuration in which messages are to be recorded takes place in...

Page 31: ...on how the signal is displayed 2 2 3 3 XY Display The XY menu displays the measured input signal as an XY dia gram Channel 1 is displayed on the X axis and channel 2 on the Y axis Both channels need...

Page 32: ...2 2 3 4 FFT Display The FFT menu opens the display of the frequency analysis The Context Menu allows you to make a wide range of changes on how the signals are displayed...

Page 33: ...r displays stored measurement curves The Con text Menu allows you to make a wide range of changes on how the signals are displayed 2 2 3 6 Device List The menu item Device List displays all connected...

Page 34: ...dicator signals an error in the communication to the hardware 2 2 3 8 Sampling The menu item Sampling opens a window for entering sampling parameters The item Channels allows you to select the channel...

Page 35: ...The selection values adapt to the set division factor of the probe The default value is 20 V 2 2 3 10 Probe The Probe menu opens a window for entering voltage dividers for signal conditioning If volta...

Page 36: ...for the measurement With the two values Upper and Lower trigger thresholds are set For most trigger modes only the Upper Threshold is required Only in the trigger mode window Windows an additional lo...

Page 37: ...Given a measurement period of 1 ms and a setting of 10 the trigger point is at 0 1 ms Thus it is mainly the behavior after the trigger event that is displayed If 99 is specified the history of the tri...

Page 38: ...13 Analog Meter Some selected measurements of the input signal may be displayed in the form of virtual pointer elements Via a context menu these pointer elements may be adapted to different measuring...

Page 39: ...nputs If required you can use channel D23 pin 26 as an external trigger input In this case the channel is always input and reserved for ex ternal trigger operation in conjunction with the Oscilloscope...

Page 40: ...established when connecting the digital inputs outputs directly Low UOL max 0 6 V Output level High UOH typ 5 V 10 USB supply voltage Sink current IOL max 9 mA UOL 0 6 V Source current IOH max 5 mA U...

Page 41: ...Editor With the help of the script engine the MEphisto Scope can auto matically perform measurements and calculate further measured values Scripts may be edited loaded and saved here as well as start...

Page 42: ...tible Windows program Programming within the script engine is done in C 2 3 2 Class name The MEphistoLab2 is called via the following COM DCOM class MEIDS MephistoScope1 Interface 2 3 3 Object name Th...

Page 43: ...nt IsRunning Flags indicating whether a measurement is ac tive IsAborted Flag Flags indicating whether a measurement has been aborted due to an error ActiveChannels Sets the active channels CH1 CH2 CH...

Page 44: ...last calculated FFT as a double array in volts RMS int channel Rms value value for channel 1 2 in volts AC int channel AC value for channel 1 2 in volts DC int channel DC value for channel 1 2 in vol...

Page 45: ...public override void Calc ref double channel1 ref double channel2 int index Example Below is a code example that includes all the above commands public override void Main while true Load a preset Sco...

Page 46: ...2 Scope DC 1 Debug Frequency Ch1 Scope Frequency 0 Debug Frequency Ch2 Scope Frequency 1 Debug THD all Ch1 Scope THDAll 0 Debug THD all Ch2 Scope THDAll 1 Debug THD even Ch1 Scope THDEven 0 Debug THD...

Page 47: ...0 5f Scope TriggerUpperLimit 0 5f Scope TriggerPoint 50 Scope TriggerChannel CH1 Amplitude Scope AmplitudeCh1 10 Scope AmplitudeCh2 10 Probe Scope ProbeCh1 1 Scope ProbeCh2 1 Offset Scope OffsetCh1 0...

Page 48: ...Scope Single Sleep 1000 Scope AutoScaleDisplay Sleep 3000 analog data logger Debug Analog data logger Scope ActiveChannels CH1 Scope SampleCount 100000 Scope SamplingDuration 10 0f Scope SamplingMode...

Page 49: ...p 3000 Scope Stop digital data logger Debug Digital data logger Scope ActiveChannels DIGITALIO Scope SampleCount 100000 Scope SamplingDuration 10 0f Scope SamplingMode DATALOGGER Scope Single Sleep 11...

Page 50: ...Voltmeter true RMS value Analog Oscilloscope Analog Oscilloscope self sufficient Analog Data Logger Analog Data Logger self sufficient Logic Analyzer Logic Analyzer self sufficient Digital Data Logger...

Page 51: ...3 2 Digital I O...

Page 52: ...outputs Configuration programmable as input or output bit by bit outputs can be read back Output current 25 C Sink current 10 mA Source current 5 mA Signal level 5 V CMOS General Information Supply 5...

Page 53: ...card UM203 only 2 BNC 1 SUB D 26 HD USB B DC plug 5 5 mm Push push socket Dimensions Housing WxHxD everything WxHxD 112 x 110 x 32 mm 138 x 110 x 35 mm Weight 430 g Operating temperature 0 70 C Stora...

Page 54: ...card into the slot To read the data from the SD card a commercially available SD card reader is needed Voltmeter Mode Analog Inputs 2 Resolution 16 bit Nonlinearity integral 2 LSB Sampling rate 2 x 1...

Page 55: ...Bandwidth 3 dB 500 kHz Automatic signal detection tension Frequency Pause ratio rectangle 100 Hz 100 mVss automatic signal recognition 500 mVSS 20 VSS 0 2 Hz 500 kHz 0 2 99 8 Time basis 1 s s to 10ms...

Page 56: ...ppm Logic level 5 V CMOS 1 8 V 3 3 V CMOS 12 V 24 V with optional converter Overload protection 5 5 VDC 0 5 VDC Input impedance 50 M 8 pF Trigger Modes 4 Pattern low high edge rising edge falling ign...

Page 57: ...w Flank dV dt Manually Extern Delay Digital Data Logger Mode Digital Inputs 16 Resolution 16 bit Simultaneous channels 8 8 Simultaneous Trigger channels 8 Sampling rate USB SD card 100 kS s 2 5 kS s D...

Page 58: ...attern low high edge rising edge falling ignore in any combination sim ultaneous for 8 bit Manually Extern Delay GPIO Mode not usable in Logic Analyzer mode Digital channels 24 Resolution 1 bit Data d...

Page 59: ...succession in different durations The assignment of the blink sequence to the detected error is listed in the table Nr 1 2 3 4 Error Description 1 GPIO error The module that processes digital signals...

Page 60: ...If this error occurs the SD card is not formatted or formatted with a wrong file system It might be a small card 8 32 MB with FAT12 Please reformat the card with the file system FAT16 For more inform...

Page 61: ...C Pinouts...

Page 62: ...mmend to use high quality connector cables with single shielded lines per channel For further accessories please refer to the current Meilhaus Elec tronic catalog and the internet www meilhaus de en p...

Page 63: ...ail support meilhaus de Download Server and Driver Update To download current driver versions for Meilhaus Electronic devices as well as manuals in PDF format please go to www meilhaus org driver Serv...

Page 64: ...ardware 50 Hotline 63 I Important Notes 6 Introduction 6 L Logger 30 Logic Analyzer 15 M Measured values 44 Models MEphisto Scope 8 O Offset 36 Oscilloscope 12 P Package Contents 8 Panels 39 Pinouts 6...

Page 65: ...Termination of measurement 21 Trigger 36 Trigger Modes 21 U User Interface 28 V Values 37 Viewer 33 Views 30 Voltmeter 12 W Warnings 7 X XY Display 31...

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