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VT DSO-2810R Manual Rev. 1.2

Virtins Technology

VT DSO-2810R Manual

This product is designed to be used by those who have some basic electronics and electrical
knowledge. It is absolutely dangerous to connect an unknown external voltage to the VT
DSO unit. Be sure that the voltage to be measured is less than the maximum allowed input
voltage.

Note: VIRTINS TECHNOLOGY reserves the right to make modifications to this manual at any time without
notice. This manual may contain typographical errors.

www.virtins.com 1 Copyright © 2017 Virtins Technology

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Summary of Contents for DSO-2820

Page 1: ... is absolutely dangerous to connect an unknown external voltage to the VT DSO unit Be sure that the voltage to be measured is less than the maximum allowed input voltage Note VIRTINS TECHNOLOGY reserves the right to make modifications to this manual at any time without notice This manual may contain typographical errors www virtins com 1 Copyright 2017 Virtins Technology ...

Page 2: ... 8 Signal Generator DDS Interpolation Not Applicable Here 21 1 8 9 Simultaneous Data Acquisition and Data Output Not Applicable Here 21 1 8 10 Calibration and Re Calibration Not Applicable Here 21 1 8 11 Upgradable software firmware and hardware based DSP algorithm 22 1 9 NON ROUTINE APPLICATIONS 23 1 9 1 Frequency Response Measurement 23 1 9 2 Distortion Noise Level and Crosstalk Measurements 26 ...

Page 3: ...i Instrument software the USB DSO converts any desktop laptop or tablet PC into a powerful oscilloscope spectrum analyzer multimeter data logger signal generator and so forth all of which work simultaneously 1 1 Package Contents A standard VT DSO 2810R Package contains the following items 1 VT DSO unit with a hardware bundled Multi Instrument Standard software license 2 2 60 MHz Oscilloscope Probe...

Page 4: ...type connector should be connected to a USB port of your computer while the B type connector should be connected to the DSO Starting from Multi Instrument 3 6 the VT DSO hardware driver will be installed automatically during software installation even without the connection of the DSO Therefore the following driver installation procedures are more for manual installation and troubleshooting purpos...

Page 5: ...ver in these locations and Browse and then locate the driver The driver can be found at Multi Instrument s installation directory Drivers VTUSB3 32bit or 64bit Choose 32 bit or 64 driver according to your Windows version After that press Next 4 The following dialog box will pop up Click Continue Anyway www virtins com 5 Copyright 2017 Virtins Technology ...

Page 6: ...VT DSO 2810R Manual Rev 1 2 Virtins Technology 5 Click Finish 6 Select No not this time and click Next www virtins com 6 Copyright 2017 Virtins Technology ...

Page 7: ...Choose Search for the best driver in these locations and Browse and then locate the driver The driver can be found at Multi Instrument s installation directory Drivers VTUSB3 32bit or 64bit Choose 32 bit or 64 driver according to your Windows version After that press Next www virtins com 7 Copyright 2017 Virtins Technology ...

Page 8: ...VT DSO 2810R Manual Rev 1 2 Virtins Technology 9 The following dialog box will pop up Click Continue Anyway 10 Click Finish www virtins com 8 Copyright 2017 Virtins Technology ...

Page 9: ...DSO driver has to be installed manually via Device Manager under Windows Control Panel The Device Manager can be accessed from Windows 8 Metro Start Screen via Charm Bar Settings Control Panel Hardware and Sound Device Manager In the Device Manager window there will be an Unknown device under Other Device with a yellow warning symbol to indicate that the driver for the device has not been installe...

Page 10: ...h for driver software in this location and Browse and then locate the driver The driver can be found at Multi Instrument s installation directory Drivers VTUSB3 32bit or 64bit Choose 32 bit or 64 driver according to your Windows version After that press Next www virtins com 10 Copyright 2017 Virtins Technology ...

Page 11: ... DSO 2810R Manual Rev 1 2 Virtins Technology 5 Choose Install to start the driver installation 6 Press Close after the installation has been completed www virtins com 11 Copyright 2017 Virtins Technology ...

Page 12: ...ixed USB port of your computer for the VT DSO unit 1 3 2 Installation Verification If the hardware driver has already been installed the LED on the DSO s front panel will blink red once whenever you attach the DSO to the computer You can follow the steps in the next section to start the Multi Instrument software If the software starts in licensed mode do not plug out the DSO that means that the dr...

Page 13: ...f not you should click 和 in the toolbar and choose Yes to compensate the ground levels of both channels to zero You may need to do this every time after you change the sampling parameters If No is chosen instead the software DC compensation will have no effect For VT DSOs that support hardware offset adjustment it is recommended to use that function for zeroing instead described in the following s...

Page 14: ...enerator is not running You can also generate it using the signal generator The probe calibration output can be configured via Setting DAC Device see figure below You can choose to output either Rectangle or MLS signal When MLS is selected the frequency value here refers to the clock frequency of the MLS generator rather than the output signal frequency By default the Probe CAL signal output is en...

Page 15: ...reased effective bit resolution as the sampling frequency defined here as its sample output rate goes down Theoretically additional bit of resolution could be gained through some algorithm whenever the sampling frequency decreases by a factor of 2 Therefore an 8 bit ADC device could output samples with a 16 bit effective bit resolution if the sampling frequency is 1 216 of its maximum sampling fre...

Page 16: ...l be widened and flattened vertical edges will become straight line slopes etc No Yes Reduces the number of independent samples per frame by a factor equal to the number of taps used in the moving average as the adjacent samples are correlated after moving average No Yes Non uniform behavior at the starting and or the ending parts of the data frame due to the fact that it is not possible to apply ...

Page 17: ... is the most commonly used oscilloscope mode Each data frame is triggered and acquired individually There may be discontinuity between two adjacent data frames The length of the data frame is limited by the DSO hardware buffer size One major advantage of this mode is that it supports the highest sampling frequency of the ADC device 1 8 2 2 Record Mode Record Mode can be activated using either of t...

Page 18: ...ints When the recording process is stopped the recorded file will be opened automatically If it is too big it will be opened frame by frame In this case the Long Wave File Navigation Toolbar as shown below will pop up to allow you to navigate through the file 1 8 2 3 Roll Mode Roll Mode is activated by ticking the above Roll button in the Sampling Parameter Toolbar Under this mode the oscilloscope...

Page 19: ...ection can be used to filter out noises from the trigger signal to prevent false triggering The available options are NIL All Pass HFR High Frequency Rejection NR0 NR4 Noise Rejection HN0 HNX High Frequency Rejection Noise Rejection There are different levels of noise rejection For Levels 0 4 the hysteresis values are fixed while for Level X it is user configurable via Setting ADC Device Trigger F...

Page 20: ...ary by the Multi Instrument software in the computer and then streamed continuously to the DAC device for output One advantage of using streaming mode is that you can fully utilize the power of the Multi Instrument software to generate very complicated signal at minimum hardware cost However limited by the software computing and the streaming speed this mode is not able to provide high frequency o...

Page 21: ...es sensible as the output signal frequency goes down DDS interpolation can be used to fix or alleviate this problem Instead of using the value stored in the lookup table directly it dynamically computes the output value through linear interpolation between two successive lookup table values This effectively enlarges many times the DDS lookup table To enable the DDS interpolation go to Setting DAC ...

Page 22: ...al 6 Adjust the Gain or Gain dB spin box in the Advanced Calibration dialog such that the maximum minimum value when the test signal is AC or mean value when the test signal is DC of Channel A is equal to the amplitude of the test signal 7 Click the Write button in the Advanced Calibration dialog to save the changed settings into the DSO hardware Note that if you click the Read button before you c...

Page 23: ...ysis The stimulus can be a white noise or MLS Maximum Length Sequence signal No synchronization between the signal generator and oscilloscope is required Just start the signal generator first and then start the oscilloscope Inter frame averaging should be used to get better results You can set the number of frames to be averaged by right clicking anywhere within the spectrum analyzer window select...

Page 24: ... first via Setting DAC Device Probe CAL to avoid false trigger The record length of the oscilloscope should be equal to the frequency sweep duration of the signal generator This is to ensure that an oscilloscope frame captures exactly the entire frequency sweep process from start to end The oscilloscope should be set to single trigger mode and inter frame averaging is not required Rectangle Window...

Page 25: ...n from 0 Hz to of the sampling frequency of the signal generator The frequency range of the stimulus should be equal to or a bit wider than the frequency range of interest of the measurement If the frequency range of the stimulus is too wide then the excitation energy in the frequency range of interest will be reduced resulting in reduced signal to noise ratio in the measurement Thus select a samp...

Page 26: ...e a substantially inferior performance in the respective aspects to the setup itself Please refer to the hardware specifications of the VT DSO for information 2 The distortion noise level and crosstalk of the setup itself can be measured by looping the output of the signal generator back to the input of the oscilloscope You may need to adjust the amplitude of the test tone voltage range of the osc...

Page 27: ...e DUT Device Under Test while the input of Channel B is connected to Ground The response of the DUT will be captured and analyzed by the oscilloscope and spectrum analyzer All the above parameters of the DUT will be measured and displayed 9 IMDsmp IMD SMPTE 60 Hz 7 kHz 4 1 Avg 10 A 60 Hz and a 7 kHz sine waves mixed at an amplitude ratio of 4 1 will be generated by pressing the start button of the...

Page 28: ...ggered just upon the start of the sweep 15 FRswLog Magnitude Frequency Response Frequency Sweep Log A 0 4 second 10Hz to 24kHz logarithmic frequency swept sine wave will be generated once by pressing the start button of the signal generator The signal will be injected into the DUT Device Under Test and the response of the DUT will be captured by the oscilloscope and spectrum analyzer The curve in ...

Page 29: ...al Channels 20000 samples channel 8 bits Non ALT mode 10000 samples channel 16 bits Non ALT mode 40000 samples channel 8 bits ALT mode 20000 samples channel 16 bits ALT mode Record Mode Streaming Mode Limited only by hard disk space available and maximum file size allowed by the operating system Maximum sampling frequency for continuous streaming is computer speed and software setting dependent an...

Page 30: ...ltage 100 V DC AC peak derated above 100kHz DC Accuracy 1 Coupling Type AC DC Input Isolation No Isolation can be achieved through a USB isolator Terminal Type Referenced Single Ended BNC Input Impedance 1 MΩ 15 pF Zero Calibration Through software Individually done at factory Gain Calibration Through software Individually done at factory Oscilloscope Trigger Trigger Detection Method Digital Trigg...

Page 31: ...ancement 52 dB 16 bits 57 dB IMD 19 kHz 20 kHz 1 1 fs 100 kHz 2nd order only full scale input 8 bits without bit resolution enhancement 65 dB 8 bits with bit resolution enhancement 65 dB 16 bits 78 dB SFDR fs 100 kHz f 1 kHz full scale input 8 bits without bit resolution enhancement 61 dB 8 bits with bit resolution enhancement 61 dB 16 bits 62 dB Crosstalk 45 dB at the same voltage measuring range...

Page 32: ...tion Ratio 1 10 Bandwidth DC 60 MHz 10 DC 6 MHz 1 Input Impedance 1 MΩ 1 with VT DSO connected 10 MΩ 10 with VT DSO connected Input Capacitance 14 pF 18 pF 10 70 pF 120 pF 1 Input Capacitance Compensation Range 15 45 pF Length 1 2 m Accessories include a 12 cm snap on rotating ground lead a sprung hook two marker rings a probe compensation adjustment tool two probe tip caps 2 3 Multi Instrument So...

Page 33: ...AV File Frame by Frame fore Long WAV File Combine WAV Files Extract Data and save them into a new WAV File File Operation Save Load Panel Setting Copy Text to Clipboard Copy BMP to Clipboard Print Preview Print Export as TXT File Data Export Export as BMP File Trigger Mode Trigger Source Trigger Edge Trigger Level Trigger Delay High Frequency Rejection Trigger Settings Noise Rejection Sampling Rat...

Page 34: ... GUIs Show Hide Toolbar Lock Unlock Panel Setting Hot Panel Setting Toolbar Others ActiveX Automation Server Oscilloscope Individual Waveform offline Waveform Addition offline Waveform Subtraction offline Waveform Multiplication offline Type Lissajous Pattern offline Linear Average Inter Frame Processing Exponential Average AM FM Demodulation Intra Frame PM Remove DC Rectification FFT Low Pass FFT...

Page 35: ...ude Spectrum Phase Spectrum Auto correlation Cross correlation Coherence Transfer Function Type Impulse Response Frequency Compensation Frequency Weighting Remove DC Intra Frame Processing Smoothing via Moving Average Peak Hold Linear Average Inter Frame Processing Exponential Average THD THD N SNR SINAD Noise Level ENOB IMD Bandwidth Crosstalk Harmonics Phase Energy in User Defined Frequency Band...

Page 36: ... X and Y Signal Generator Sine Rectangle Triangle Saw Tooth White Noise Pink Noise MultiTones Arbitrary Waveform MLS DTMF Musical Scale Wave File Play Waveform in Oscilloscope Waveform Cyclic Play Waveform in Oscilloscope Frequency Sweep Linear Log Sweep Amplitude Sweep Linear Log Normal Burst Mask Phase Locked Fade In Fade Fade Out AM FM Modulation PM Software Loopback all channels Software Loopb...

Page 37: ...Display Precision Define UDDP Alarm Sound Function Alarm Acknowledge Legend Blank Function available if purchased Shaded Blank Function NOT available for that version Sound Card Oscilloscope Sound Card Spectrum Analyzer Sound Card Signal Generator Multi Instrument Lite Multi Instrument Multi Instrument Pro Spectrum 3D Plot Waterfall Plot Type Spectrogram Spectrogram Color Palette Waterfall Color P...

Page 38: ...conversion among acceleration velocity and displacement in Oscilloscope SI English units 2 4 Software Development Interface Specifications Multi Instrument provides the following secondary development features 1 Multi Instrument can work as an ActiveX automation server so that an external program can access the data and functions that Multi Instrument exposes You can integrate Multi Instrument int...

Page 39: ...APIs directory of the software 3 Virtins Technology s Signal Processing and Analysis vtSPA Application Programming Interfaces APIs provides a suite of generic APIs for data processing and analysis It contains some unique features algorithms originated and only available from Virtins Technology Please refer to Signal Processing and Analysis vtSPA Interfaces Download link http www virtins com Signal...

Page 40: ...key USB dongle which are NOT included in the standard VT DSO package and should be purchased separately as a brand new license if needed In other words the VT DSO hardware should always be connected to the computer in order for the Multi Instrument software to work under the licensed mode even though you might just want to use your computer sound card for ADC and DAC 3 2 License Upgrade from one l...

Page 41: ...DC device via Setting ADC Device Device Model For example you can also use your computer s sound card as the ADC device If the VT DSO unit does not contain a built in DAC then no signal generator function is available within the hardware unit except the digital signal output for probe calibration However you can choose other DAC device via Setting DAC Device Device Model For example you can use yo...

Page 42: ...layer The following figure shows the measurement of a 500Hz sine wave and a 1kHz square wave under ALT trigger mode The trigger level for both channels can be adjusted independently under this mode The trigger level for Channel B can be adjusted by dragging the arrow on B axis in the oscilloscope window www virtins com 42 Copyright 2017 Virtins Technology ...

Page 43: ...VT DSO 2810R Manual Rev 1 2 Virtins Technology www virtins com 43 Copyright 2017 Virtins Technology ...

Page 44: ...is period of warranty a replacement of the faulty part will be shipped to the buyer s address free of charge upon receiving and verifying the returned faulty part The Warranty is only applicable to the original buyer and shall not be transferable The warranty shall exclude malfunctions or damages resulting from acts of God fire civil unrest and or accidents and defects from using wrong electrical ...

Page 45: ...1 2 Virtins Technology components in life support services or systems Virtins Technology should be informed of any such intended use to determine suitability of the products www virtins com 45 Copyright 2017 Virtins Technology ...

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