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Making measurements from the trace

VI - 30

Virtual digital oscilloscopes, 60 MHz

Making measurements from the trace (continued)

1. Manual

measurements

using the cursors

These measurements are made on the 2500 points used for the display.

If the Zoom is active the cursors are available on the zoomed graph.

a) Snap to Point

measurements

In this mode the cursors are attached to the trace for the channel defined

as the measurement reference: the user can only move them on the

horizontal axis.
A click on the

button of the tool bar or on the 'Measure’ menu function

activates/deactivates the cursors:

The 'Snap to Point measurements’ are driven from the "Oscilloscope

Trace" window which becomes:

Origin of the time

base

Cursor 1

Cursor 2

Cursor 1 & 2

abscissa

Channel to which

the cursors are

attached

The values of the

CH1 signal at the

X1 & X2 abscissa

Variation of

abscissa dX = X 2

- X1

Difference in

values

dY = Y2 - Y1

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GlobalTestSupply

.com

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[email protected]

Содержание 685338240214

Страница 1: ...62UEW MTX 162UEW 2 2 c ch ha an nn ne el l 6 60 0 M MH Hz z F FF FT T U US SB B E Et th he er rn ne et t W Wi iF Fi i O O Op p pe e er r ra a at t ti i in n ng g g I I In n ns s st t tr r ru u uc c ct...

Страница 2: ...rting a new oscilloscope 11 Our recommendations 11 Changing the IP address 12 Programming the WiFi connection 13 Starting a WiFi connection 15 Returning to USB cable connection 17 Returning to an ETHE...

Страница 3: ...tarting an FFT calculation 39 FFT settings 40 Interpreting the FFT 41 Graphic representation 43 Exiting the FFT calculation 44 Obtaining an XY representation 45 Starting the XY representation 45 Using...

Страница 4: ...pter XI Technical specifications 62 Chapter XII General mechanical specifications 68 Chapter XIII Supplies Accessories 69 shipped 69 as options 69 Index Attention Before printing this notice think of...

Страница 5: ...surements are those carried out on circuits directly connected to the low voltage installation Example supply of household appliances and portable electric tools Preparing for use before use Respect t...

Страница 6: ...or crossed for local use or wireless using WiFi MTX 162UEW only Powering up Before powering up your oscilloscope and its connection to the Host PC insert the supplied CD ROM and install the SCOPEin B...

Страница 7: ...to create and launch the instrument In our example we are starting up the MTX 162UEW oscilloscope for the first time By default the instrument s IP address is 192 168 0 100 with the 255 255 255 0 net...

Страница 8: ...s conflicts on the network you are using consult your administrator in order to select an available address that is compatible with the network In our example the network mask used is 255 255 0 0 we p...

Страница 9: ...ch 40 point interval in the acquisition memory when FFT is active the points that are sent are also used in the Fourier transformation and the use of the couples min max would lead to an erroneous fre...

Страница 10: ...READY pretrig loaded waiting for trigger POST TRIG currently loading post trig STOP acquisition stopped Grid if activated Indication of the vertical scale and the channel coupling if the function is...

Страница 11: ...p Our recommendations If a communications mode is not operational Make sure that the instrument is connected disconnect the cables USB and Ethernet and reconnect them For driving using Ethernet check...

Страница 12: ...and open cmd If an instrument responds change the IP address If the problem persists close the SCOPEin BOX_LE application disconnect it then reconnect the power supply on the MTX 162 to reinitialise i...

Страница 13: ...ongly recommended that you protect your network using a data encryption and authentication mechanism the MTX 162UEW manages the WEP 64 and 128 bits WPA and WPA2 security modes The latter two are to be...

Страница 14: ...ccess point documentation and copy its programming on the MTX 162UEW The password cannot be re read it is only reprogrammed if the ASCII Key Hex Key or Phrase fields are changed used to test the recep...

Страница 15: ...de when it was powered off the oscilloscope will restart by attempting to establish the previous WiFi connection if not if no cables USB or Ethernet are connected to the instrument a search for a WiFi...

Страница 16: ...he READY LED is permanently lit before the 10 rapid blinks the connection is established otherwise the search for an Ethernet cable connection is activated If successful the WiFi LED in the Start of a...

Страница 17: ...ng to an USB cable communication Two methods are possible Connect the USB cable between the device and the PC then to keep the WiFi connection Select the USB and open the new connection to abandon the...

Страница 18: ...Returning to a USB cable communication continued Select the USB and open the new connection Returning to an ETHERNET cable connection Connect the Ethernet cable then Select Ethernet and open the new c...

Страница 19: ...assess the reception level and if needed move your MTX 162UEW oscilloscope closer to your access point in order to check whether you have a range problem Make sure especially when switching from Ad Ho...

Страница 20: ...our technical support web site at the following address http www chauvin arnoux com SUNSUPPORT SUPPORT page pageSupportLog asp We recommend that you place this file in the application s work directory...

Страница 21: ...close the SCOPEin BOX_LE application and re initialise the MTX 162 by disconnecting it from the power supply The update is secure and cannot cause the destruction of the onboard MTX 162 firmware In th...

Страница 22: ...ists in linking each pair of samples by a segment The Envelope traces the envelope of Min Max samples keeping for each abscissa the minimums and maximums displayed since the last time acquisition was...

Страница 23: ...eous representations and erroneous automatic measurements Trig for triggered in this mode each detection of a trigger event ascending or descending wave on the signal selected as the source causes a t...

Страница 24: ...onent of the signal is removed on the CHx channel and on the trigger source CHx the AC or DC filtering of the trigger gives the same result Source 3 trigger sources are available CH1 CH2 and LINE LINE...

Страница 25: ...this signal By default the time base is calculated in order to view at least 3 signal periods If the FFT is activated the time base is calculated so that the fundamental of the frequency representatio...

Страница 26: ...tered otherwise Select the AUTO trigger mode Validate the channel corresponding to the signal connection Choose the corresponding trigger source Select Coupling Trigger AC Level Trigger at 0 V Sensiti...

Страница 27: ...ble to move the zoomed zone using the mouse by moving the black frame to the left or to the right keep the mouse clicked while moving the frame or by using the buttons shown opposite Zoom increase Zoo...

Страница 28: ...MHz Using the double time base Zoom continued If the trigger is no longer in the zoomed zone its representation on the zoomed graph becomes The trigger is to the right of the zoomed zone www GlobalTes...

Страница 29: ...rements on the signal Two categories of measurements can be made using the MTX 162 1 manual measurement using the cursors 2 automatic measurements Selecting the reference channel In both cases the mea...

Страница 30: ...annel defined as the measurement reference the user can only move them on the horizontal axis A click on the button of the tool bar or on the Measure menu function activates deactivates the cursors Th...

Страница 31: ...aph The position of each cursor is given following the vertical scale of the different traces These measurements were selected from the Measure menu The Oscilloscope Trace window becomes Cursor 2 Curs...

Страница 32: ...determine its period for the phase calculation this period corresponds to 360 The black cursor is then placed on the other signal if cursor 1 is placed on an ascending wave with coordinates X1 Y1 the...

Страница 33: ...ge peak to peak voltage established low voltage established high voltage amplitude operating voltage average voltage positive offset ascending time descending time width of positive pulse at 50 Vamp w...

Страница 34: ...the measurements are made using all the samples acquired in the interval determined by cursors 1 2 A message Measurements between cursors appears in the window For a greater precision in the displayed...

Страница 35: ...it determines the de phasing of the CH1 or CH2 signal compared to the reference channel see above As with the manual phase measurement 3 cursors are used but they are placed automatically This measur...

Страница 36: ...is activated from the Horizontal menu 2 Averaging the trace To reduce the random noise observed on the signals it is possible to average the acquired samples The calculation is made using the followin...

Страница 37: ...unctions are not calculated using the physical size of the signals but using their base sample values converted into divisions on the screen This is why the vertical sensitivity of the MATH channel is...

Страница 38: ...rocesses VII 38 Virtual digital oscilloscopes 60 MHz Carrying out specific processes continued 3 MATH trace continued Offsetting the result www GlobalTestSupply com Find Quality Products Online at sal...

Страница 39: ...he Fourier signal transformation calculation is activated in 2 ways by clicking on the button in the tool bar by clicking on the button in the Control panel In both cases a new FFT Trace window opens...

Страница 40: ...window Windowing makes it possible to limit to discontinuous effects related to the time signal observation window see Interpreting the FFT Five windows are available Rectangular Hamming Hanning Blac...

Страница 41: ...500 points obtained by selected one point every 20 in the acquisition memory These same points are used for the non zoomed time representation in the Oscilloscope Trace window The finite duration of t...

Страница 42: ...soidal poor good the best 93 dB The following table gives the maximum theoretical error on the amplitude for each type of window Window Max theoretical error in dB Rectangular 3 92 Hamming 1 75 Hannin...

Страница 43: ...ons are possible When the zoom is activated only the zoomed zone is displayed The displacement of the zoomed zone is done using the mouse by moving the scroll bar or the scroll buttons Origin of the f...

Страница 44: ...signal eases the surveillance of the changes in signal amplitude Effects of under sampling on the frequency representation If the sampling frequency is not adapted less than double the maximum frequen...

Страница 45: ...n be used to view the XY representation of channels 1 and 2 in real time with X CH1 and Y CH2 a Starting the XY representation The XY representation is activated either by clicking on the button in th...

Страница 46: ...of the window by clicking on the button of the tool bar The measurements using cursors are available for the XY representation and are used in the same way as in the Oscilloscope trace window see Chap...

Страница 47: ...an XY representation continued c Cancelling the XY representation There are three ways to exit the XY representation by clicking on the button in the tool bar by clicking on the button in the Control...

Страница 48: ...it in real time in the Oscilloscope Trace window During capture the acquisition is stopped while the points are transferred a Starting the capture The capture is started using the key in the Oscillos...

Страница 49: ...le in capture Selection of the channel display Offset 1 div zoomed to the left Offset 8 div zoomed to the left Marking of the zoomed zone Horizontal trigger position Zoom increase Zoom decrease Exit z...

Страница 50: ...Capture Oscilloscope Control panel The button on the tool bar of the Oscilloscope Control window or the File Print menu do not allow the printing of captures d Exporting the capture to EXCEL Current...

Страница 51: ...the Capture windows or The closure of the Capture windows leads to the permanent loss of the traces If you wish to keep the captured traces to work on them further stop acquisition make a backup of th...

Страница 52: ...g the button again erases the current frozen traces The frozen trace is not lost if you exit and open new work session using the same instrument configuration file De selecting a channel permanently d...

Страница 53: ...quired samples that form the trace as well as the data relating to the acquisition and making it possible to interpret the data are transferred to the PC are backed up a TRC saving This is the only fo...

Страница 54: ...saving This format is used to export data to another application spreadsheet editor However the generated file cannot be used by SCOPEin BOX_LE It is a test file ASCII with the TXT extension that can...

Страница 55: ...MEMx and the settings for the vertical block for the channel in question are updated using the values contained in the file The acquisition time base of the recalled trace and the file name are displa...

Страница 56: ...data first install indicator language used software work directory nameInstrument INI where nameInstrument is the name given to the instrument when a session is created The INI file is the PC configu...

Страница 57: ...file with a CFG extension which it is recommended to place in a specific directory in order to differentiate it from general configurations in the example below we have created a CFG directory The ac...

Страница 58: ...continued 2 Recalling the configuration Only configurations made using the SCOPEin BOX_LE application can be recalled configurations for oscilloscopes other than MTX 162 are not compatible Example Rec...

Страница 59: ...from the oscilloscope this is why the Capture windows open if they are not already open The samples can be transferred to EXCEL in three ways by clicking on the button in the tool bar from the Tools...

Страница 60: ...he trace to EXCEL X 60 Virtual digital oscilloscopes 60 MHz Exporting the trace to EXCEL continued The following window appears www GlobalTestSupply com Find Quality Products Online at sales GlobalTes...

Страница 61: ...the trace to EXCEL continued The export of data to Excel can take several minutes This export can be done manually using the trace saving TXT which is opened directly using EXCEL see Using Save TXT ww...

Страница 62: ...DC at 50 MHz 40 dB same sensitivity on both channels Tolerance ESD 2 kV Response to rectangular 1 kHz and 1 MHz signals Overshoot 3 Aberrations 3 Positive or negative overshoot Accuracy of vertical r...

Страница 63: ...1000 points on the screen Horizontal expansion Simultaneous display of the 50 kpts on 2500 points and the 2500 points for the zoomed zone Possibility of offsetting the zoomed zone within the memory M...

Страница 64: ...tive signals Transitory capture Minimum width for detectable glitches 20 ns Glitch capture can be activated for all the time base ranges Depth of acquisition memory 50 kpoints PRETRIG Function Positio...

Страница 65: ...uired trace Indicate that averaging is activated on the trace window Graticle Complete Axes Borders Indications in the Oscilloscope Trace window triggering Position of the T level trace color on the l...

Страница 66: ...ace of the oscilloscope Interface USB to RS232 the serial connection configuration is automatic at 921 600 bauds HARD protocol 8 bits 1 stop bit no parity Driver The USB to RS232 interface driver load...

Страница 67: ...sages Autotest Error n 0001 Microprocessor or FLASH pr oblem Autotest Error n 0002 RAM problem Autotest Error n 0004 FPGA problem Autotest Error n 0008 SSRAM problem Autotest Error n 0010 SCALING 1 pr...

Страница 68: ...Power supply surge category CAT II 240 V Measurement entry power supply surge category CAT II 300 V CEM This appliance was designed in compliance with the current CEM standards and was tested in compl...

Страница 69: ...f 3 HA2005 Safety adapter BNC male 4 mm cartridge CAT III 500 V pack of 3 HA2002 Safety adapter BNC male 4 mm cartridge CAT III 500 V pack of 2 HA2053 Voltage sensors 1 1 1 10 200 MHz 300 V HX0220 Vol...

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