DDSG2A User Manual - USB Function Generator/Oscilloscope
Contents
1. Select Sweep Sine generator in Mode Selection 2 Enter start freguency stop freguency number of steps and step time in sweep generator frame 3 Select amplitude and dc offset following steps described in generating single sine 4 Click RUN or REFRESH Generating Square Wave Wave can operate in two different modes In Square Wave mode DDS uses RAM and arbitrary voltage feature to generate square wave Amplitude resolution in this mode is 14 bit and frequency resolution error is maximum 50 kHz Bias and amplitude range is same as in single tone sine In Square Wave2 mode DDS generate sine eave first then use comparator then a programmable attenuator before final amplifier Amplitude resolution is 8 bit and output range is 1 5 Vpp Frequency resolution s 0 1 Hz There is no bias control Amplitude in this mode is sensitive on temperature change since it uses active attenuator for amplitude control This mode is mainly provided to be used for logical gates driving and to be used with under sampling DDSG2A scope function to measure propagation delay since frequency and phase can be controlled allowing DDSG2A scope to display signal with bandwidth of 100MHz See calibration section for amplitude calibration in Square Wave2 mode Frequency Sweep with RF Monitor The DDS AND DSO functionality of DDSG2A have been combined to allow integrated frequency amplitude sweep generation and response monitor2. Real time Horizontal div 100n 200n 500n lu 2u Su 10u 20u 50us 100u 200u 500 1m 2m 5m 10m 20m 50m 100m 500m 1s Interleaved under sampling mode Horizontal div In 2n 5n 10n 20 50n 100n 200n 500n frequency range Oscilloscope Interleaved 1Mhz 100Mhz Works only if signal under sampling mode originated from same bandwidth generator or is synchronized from same generator and frequency is allowed to shift up to 1kHz Freguency counter 1Hz 1GHz Prescaler used is rated 2GHz but device is tested with 1Ghz 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 14 of 19 Freguency counter max 5Vpp This can be extended with input voltage scope probes for freguencies 1Hz 20MHz Using Real Time Oscilloscope Real item oscilloscope can work as one channel 500Ks s 12 bit or two channels with maximum speed of 40 Ms s simultaneously ob both channels Fastest time division in 12 bit mode is 200us and 100ns in 40Ms s mode It is recommended to stop display before changing any settings or moving channels trigger and cursor position If stop button is not used then process will be too slow For best results use standard oscilloscope passive probes with division ratio of 10 and bandwidth of 100 MHz or higher and calibrate probes input capacitance for best results Generator in Square Wave mode with 1kHz output can be used
3. 0 00465Hz with Frequency resolution 20Mhz clock Sine wave and square 0 093 with wave mode 400Mhz clock 5Vpp EDC See page 2 for available power Amplitude range 10mVpp High Z 40Mhz High Z into 50 Ohm over freguency 5Mv 500hm 2 5Vpp 500hm range No load or hi Impedance DC Offset 1V 4V load divide by 2 for 500hm load Output impedance 50 Ohm Pulse width 10ns 2s Rump and Triangle 0 1 Hz 100KHz Frequency range Arbitrary points 2 1024 Arbitrary points 250 Hz 100Mhz sampling frequency DDS Clock Range 1 MHz 400 MHz 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 6 of 19 Parameter Min Max Typical Description Comments DDS DAC Voltage Derived From DDS Resolution 14 bit IC AD9954 Data Sheet DDS Phase Control ES Derived From DDS IC Data 1t Resolution Sheet DDS Frequency Derived From DDS IC Data resolution 32 bit Sheet DDS Amplitude Derived From DDS IC Data scale Control 14 bit Sheet Resolution Derived From DDS IC Data DDS Phase Noise 105 dBc Hz Sheet Rise Fall time square Sns wave and pulse Using Generator Power and USB cables have to be connected before DDSG2A application is open Two separate windows should appear after DDSG2A is open One window is called Function GeneratorDDSG2A and second one is DDSG Monitor Generator window contains controls for signal generated only and monitor contains controls for Oscillosc
4. lus 1ns The DSO is configured and its result displayed via the DDSG2A Monitor Window which is part of DDSG2A Application DDSG Monitor Provides an easy to use graphical interface for oscilloscope frequency and amplitude sweep functions and the frequency counter Graphical results for DSO and sweep functions are displayed at resolution of 640x512 pixels 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 13 of 19 In oscilloscope mode the display provides a view of the most recently acguired samples mapped onto 640 pixels In addition the monitor applications records 2048 mapped samples so that scope display window can be moved back in time to view previously captured signals just over 3 windows Cursor measurements functions are provided for both horizontal and vertical guantities Trigger amplitude and CH1 CH2 zero levels are displayed visibly in monitor window and can be controlled by user DSO Specifications Parameter Min Max Typical Description Comments Real Time Scope sampling 64 S s 2x40MS s 8bit speed 1x500kS s2 bit Real Time Scope DC 10Mhz Vertical amplifier Bandwidth bandwidth is 100 MHz but sampling speed limits usable bandwidth to 10Mhz Scope Record length 640 2048 Scope Input Impedance 1Mohm 20pF Scope Display Size 640 X 512 Scope Vertical display 10mV 20mV 50mV 100mV 200mV 0 5V 1V 10mV works only in 12 bit divisions mode
5. one to adjust amplitude since modulation signal use scope channel 1 amplifier e Select modulation type External AM or External FM e If FM is selected then maximum frequency deviation will be about 100 KHz for 4Vpp Input signal use arbitrary frequency mode for greater deviation e Select additional AM modulation gain 0 5 1 2 or 4 Volt of input voltage to make 100 AM 12 Click RUN or REFRESH Output signal should be present at OUT If all entries are within device operating range If entered amplitude is higher then available power at given frequency then message box saying that amplitude is to hi for frequency entered and device will generate maximum available power after clicking ok on message box Read calibration section if output amplitude offset or frequencies errors are in not acceptable range 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 8 of 19 D9 I OD P B 10 11 12 Generating Pulse Connect Generators OUT to circuit under test Open Function Generator window Select Pulse Generator in Mode Selection combo box Select Pulse and Pause duration unit ns us or ms Enter Pulse and Pause duration value Select Single or Continues in Mode selection box Select amplitude unit in combo box Enter Amplitude value Select DC Offset mode Manual VPP 2 or 0 00 if manual mode is selected then
6. 0 2V div and 0 1V div is calibrated by fine tuning cal data line 25 Oscilloscope CH2 Gain for 50mV div and 20mV div is calibrated by fine tuning cal data line 38 Scope offset cal data 1s used only at device application start up before Cal Offse Button 1s activated Call Offset button is used to set dc offset to zero when scope probes are open or connected short to ground Oscilloscope CH1 Offset for 1V div 0 5V div 0 2V div 0 1V div is calibrated by tuning cal data line 21 Increasing values of cal data will decrease scope voltage gain Oscilloscope CH1 Offset for 50mV div and 20mV div is calibrated by tuning cal data line 34 Oscilloscope CH2 Offset for 1V div 0 5V div 0 2V div 0 1V div is calibrated by tuning cal data line 26 Oscilloscope CH2 Offset for 50mV div and 20mV div is calibrated by fine tuning cal data line 37 7 23 2008 fastsampling com
7. USB Function Generator 2 Channel Oscilloscope Freguency Counter a o Oo c a 2 7 A DDSG 2A SN 0208103 DDSG2A User Manual fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 2 of 19 Contents reeL EE 3 Arbitrary Function Generator with Direct Digital Synthesizer DDS 3 E Ee Ne EE 5 Using Generator zy EE 6 Generating Single tone sine and Modulated Sine 7 Generating Pulse bio oa aa aa eens oe anne Malone o Generating Arbitrary aer Eet 8 Generating Arbitrary Freen NEESS eege dad aakava va 9 Generating Arbitrary Phase sili o 9 reegen on 10 GeneTain Square WAVE stava se 10 Frequency Sweep with RF MOMitot c scscscsscccsssncccssvsnsccsvesscncsevsnescsconesens 10 Amplitude Sweep with RF Montor 12 Digital Sampling Oscilloscope DSO ccccccssecccsonssesovsnsceserscacccesenceeesnsnsssenenss 12 Using Real Fime Oscilloscope ass Zl aka 14 Using FFT Spectrum Analy EE 16 Using Interleaved Under Sampling Oscilloscope eee 16 Using E IR ee EE 17 CA DEATOM koz ase osten a o EE e ae es 17 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 3 of 19 Introduction The DDSG 2A 1s a multi function electronics test and measurement device comprising a Direct Digital Synthesizing DDS Function Generator a 2 channel Real Time Storage oscilloscope DSO Demodulating Logarithmic Amplifier log amp and a Freguency Count
8. e 7 Generator Sguare Wave2 amplitude is calibrated by fine tuning calibration data in line 28 for 1Vpp Increasing values in cal data will decrease amplitude 1Vpp line 28 2Vpp line 29 3Vpp line 30 4Vpp line 31 5Vpp line 32 Generator DC Offset for sine waves and sguare wave is calibrated by fine tuning calibration data in line 3 of cal data file Increasing values of cal data will increase offset voltage Generator Arbitrary Voltage DC offset is calibrated by fine tuning calibration data in line 11 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 19 of 19 Increasing values of cal data will increase offset voltage Generator Ramp DC offset is calibrated by fine tuning calibration data in line 13 Increasing values of cal data will increase offset voltage RF Voltage detector log amp Offset intercept is calibrated by fine tuning calibration data in line 15 Increasing values of cal data will increase RF detector offset Oscilloscope CH1 Gain for 1V div and 0 5V div is calibrated by fine tuning cal data line 19 Increasing values of cal data will decrease scope voltage gain Oscilloscope CH1 Gain for 0 2V div and 0 1V div is calibrated by fine tuning cal data line 18 Oscilloscope CH1 Gain for 50mV div and 20mV div is calibrated by fine tuning cal data line 35 Oscilloscope CH2 Gain for 1V div and 0 5V div is calibrated by fine tuning cal data line 24 Oscilloscope CH2 Gain for
9. e Selection combo box Select Voltage in Arbitrary combo box Enter minimum time step Min t ns range is 10 66ns Enter multiplier value for profilel and profile 2 if profile2 is used one arbitrary point period Min t ns multiplier Enter profiles start and stop point number Load arbitrary file using browser button and Load profile from file button Click REFRESH or RUN Button Example of arbitrary file with 2 profiles One profile have multiplier of 50 and second of 10 which with minimum time step of 10ns and start point 1 Final point 5 generates form shown on picture below Arbitrary voltage file contains Arb Pt 10 2 1000 3 1500 4 2000 5 2500 Voltage mV Generating Arbitrary Freguency Follow same steps as described in generating arbitrary voltage section except that arbitrary file will contain freguency values in hertz and arbitrary selection will be freguency See Frequency text file found in DDSG2A installation folder for reference Generating Arbitrary Phase Follow same steps as described in generating arbitrary voltage section except that arbitrary file will contain Phase values in degrees 0 00 360 00 and arbitrary selection will be Phase 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 10 of 19 See Phasel text file found in DDSG2A installation folder for reference Generating Sweep Sine
10. er In addition the DDS Log Amplifier and DSO functionality is combined to allow integrated freguency amplitude sweep generation and response monitoring for easy characterization of freguency response of circuit under test The small portable hardware package connects to your PC via an optically isolated full speed USB interface for PC protection and eliminates effects of noise from USB bus and PC ground AI device control and monitoring 1s managed via an intuitive graphical PC software interface The use of small package fine pitch components allows high number of functions to be integrated in a small and economical instrument This low cost easy to use device is a perfect solution for engineers and hobbyists alike who need to generate and analyze signals from DC to 100 MHz Unit is capable to generate signals to 200 MHz but with increased distortion caused by DDS maximum clock is limited to 400 MS s Light weight plastic enclosure contains one layer of aluminum folium from inside to improve device immunity to EMC and minimizes interference with other electronics device PCB assembly is done using automated pick and place machine with vision system Re flow profile is computer controlled and after testing board is coated with urethane Arbitrary Function Generator with Direct Digital Synthesizer DDS The Direct Digital Synthesis Function Generator provides an array of standard signal waveforms including Sine Square Ramp Triangle a
11. evice Calibration is done after device is produced and user can calibrate it using previously calibrated instruments like oscilloscopes millimeters freguency counters etc CaldataXXXXXXX text files contains calibration data loaded at software start up and if manually loaded thru Calibration File load Button XXXXXXX Portion of calibration data file name represent device serial number found on device label and stored in device USB chip This allows multiple DDSG2A devices to be used with same PC with multiple application open 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 18 of 19 Changing Cal Data values will affect generator freguency DC offset Amplitude oscilloscopes voltage accuracy etc Generator Freguency is calibrated by fine tuning calibration data in line 2 of cal data file This line is initially 1 since TCXO have 2 5ppm accuracy which is best we have available Increasing values will increase freguency Generator Sine Wave Amplitude in freguency range Increasing values of cal data will increase amplitude DC 1Mhz is done with adjusting line 4 10 MHz adjust cal data line 5 20 MHz adjust cal data line 41 30 MHz adjust cal data line 42 40 MHz adjust cal data line 43 50 MHz adjust cal data line 6 60 MHz adjust cal data line 44 70 MHz adjust cal data line 45 80 MHz adjust cal data line 46 90 MHz adjust cal data line 47 100 MHz adjust cal data lin
12. for passive probes input adjustment 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 15 of 19 im DDSG Monitor Select Scope CHI Scope CH2 or Scope Selected cursor will become CH1 CH2 solid line and unselected one will be doted line Amplitude Sweep Start fo Stop b eme Sweep Monitor Freg 0 Hz Maan Jo myrms Input CH2 IN Select Real Time Frequency Counter 0 Hz iHz 20Mhz v CH2 IN Sampling mode Select 12 bit 300Ks if one 2048 points box will transfer Use slider to adjust channel position channel is set and time division 2048 adc values during each Reset DDSG2A4 trigger position horizontal position is greater then 200us frame refresh This will slow refresh rate but it will allow viewing Trigger Source 2048 points by using slider Trigger Edge and Hor Position tab Trigger Mode Sampling Mode Reset DSG2A will reset generator User tab strip to enable vertical cursors for Use tab strip for channels position trigger delta voltage measurements or horizontal cpu and synchronize adc cloks position horizontal display position and cursor for delta time measurements or disable Use this button if if unexpected cursors horizontal or
13. ing for easy characterization of the 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 11 of 19 frequency amp amplitude response of system under test The measurement and display functions of the monitor are closely coordinated with selected sweep signals and sweep signal control and monitoring is also combined in DDSG2A Monitor for user convenience The display can be configured for a variety of vertical measurements units mVrms dBmV dBMm The example below illustrates the freguency sweep function used for characterization of a 10 7 MHz band pass filter Monitor sweep specifications This test shows band pass filter freguency response Voltage detector amplitude range TI ODby Detector freguency range 200khz 200Mhz Input impedance 50 ohm Monitor amplitude measurements 100mVrms div 250mVrms div 5dBmV div 10dBV 10dBm 15dBm Select frequency sweep mode in DDSG Monitor Window Shown on picture right Enter start and stop frequency select amplitude unit and enter amplitude Select RF detector display unit left lower corner of window 100mVrms div 250mVrms div 10dBrm etc Connect DDSG2A device OUT to the input of circuit under test connect ddsg2a CH1 IN to circuit under test output Click START DDSG 2A Start freguency 1s set to 9 7 MHz and stop freguency to 11 7Mhz Generator output amplitude i
14. mp Pulse Additionally more complex waveform are provided such as Swept Freguency Sine Modulated Sine Wave AM FM and Arbitrary Waveform Generation Voltage Freguency Phase Finally Swept Sine Freguency or amplitude modes are provided integrated with the DSO monitor for analysis of freguency and amplitude response characteristics of system under test TXCO Freguency stability is 2 Sppm Generator Operating Modes Single Tone Sine Sguare Ramp Triangle Pulse user specified mark space Swept sine Freg start stop and step period control AM FM modulated Sine external Modulation Arbitrary Voltage Freguency Phase 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 4 of 19 The Function generator 1s controlled through the easy to use PC based Graphical interface shown right Mode Selection activates all the appropriate control panels for clarity and also conveniently displays signals limits of selected mode in same window As well as the generator modes controlled by this application the monitored freguency and amplitude sweep functions are controlled in the DDSG Monitor window shown below Maximum available power into 50 ohm load from 1 to 100 MHz 7 23 2008 Frequency and amplitude sweep with monitor mVrms dBmV or dBm alo x File Help Mode Selection Single Tone Sine Limitations Frequency Range 3dB 0 01 Hz 100MHz Maxim
15. offset unit have to selected and offset value have to be entered If Vpp 2 is selected then device will generate offset equal Vpp 2 so that output voltage is always positive only swinging from 0 to Vpp Check 50 Ohm box if circuit under test have input impedance of 50 ohm Check 20dB attenuator for low amplitude low noise signals 0 SOOMv or 0 250 Mv 50ohm Click RUN or REFRESH If Single mode is selected then single pulse will be triggered with click on RUN Software will use best hardware ability to generated pulse as close as possible to value entered Pause duration will have greater error since pause time is made using smaller time segments which duration will depend from pulse length Use invert check box for negative pulse polarity Generating Arbitrary Voltage See Voltagel text file found in DDSG2A installation folder for reference 7 23 2008 Make tab separated arbitrary points text file like one with first five points in example file supplied Voltagel txt with DDSG2A software First two lines will be ignore by application and can contain anything Third line contains first arbitrary point Voltage value must be in second column and range is from 0 to 5000Mv 2 Connect Generators OUT to circuit under test fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 9 of 19 z EN Eh PR B 8 9 10 Open Function Generator window Select Arbitrary in Mod
16. ope Frequency Counter and also controls generator in Frequency Sweep mode If DDSG2A device is used only as generator then monitor window can be closed or downsized but monitor window can not work alone with generator window closed 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 7 of 19 Generating Single tone sine and Modulated sine 1 Connect Generators OUT to circuit under test 2 Open Function Generator DDSG2A window W Select Single Tone Sine or Sine Modulated if modulation needed in Mode Selection combo box Select frequency unit Hz kHz or MHz in combo box right from frequency entry text box Enter frequency value in frequency text box Select amplitude unit in combo box Enter Amplitude value Select DC Offset mode Manual Vpp 2 or 0 00 if manual mode is selected then offset unit 0 A have to selected and offset value have to be entered If Vpp 2 is selected then device will generate offset equal Vpp 2 so that output voltage is always positive only swinging from 0 to Vpp Use Vpp 2 to drive TTL or CMOS digital circuit 9 Check 50 Ohm box if circuit under test have input impedance of 50 ohm 10 Check 20dB attenuator for low amplitude low noise signals 0 500mV or 0 250 mV 50ohm 11 If Sine Modulated mode is selected then perform following four steps e Connect modulation signal to CH1 input of Function Generator and use volt div channel
17. s OdBm 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 12 of 19 Amplitude Sweep with RF Monitor Amplitude sweep will generate single tone sine wave with constant freguency and phase and linear amplitude increase starting from start amplitude and ending at stop amplitude RF monitor with input at CH1 will measure RF level and display magnitude One example application would be amplifier linearity gain input and output amplitude range Select Amplitude Sweep in Mode combo box Enter frequency Enter start and stop amplitude Click RUN or REFRESH Es une Digital Sampling Oscilloscope DSO The Digital Sampling Oscilloscope provides two high speed channels with an analog bandwidth of 10 MHz for any signal source and 100 MHz for signals synchronized from same device generator Two different kinds of ADC converters are provided One 2 channel ADC with maximum 40Ms s and with 8 bit resolution and second one with one channel 480Ks s 12 bit resolution allowing higher dynamic range for low frequency signal such as audio Two sampling modes are available real time and interleaved under sampling Real time sampling is provided for signals up to 10MHz and time base 1s 100ns For signal sourced from the DDSG2A Function Generator and with allowable frequency shift of 1 kHz interleaved under sampling mode extends the signal measurement capability to up to 100 MHz time base
18. tor or is synchronized with it as shown on diagram below Circuitry Under Test DDSG 2A 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 17 of 19 Picture shows propagation delay test of logic Emme ix NOR gate 74AC00 with generator with bg Square Wave2 mode 30mhz 3 3v output i amplitude connected with short not terminated coax 50 cable to input gate and passive probes Amplitude Sweep Start o 200mhz bandwidth x10 converted at gate m input CHI and output CH2 a Magn 46 4 dBm CH1 IN Frequency Counter Stopped 0 4 84 Reset DDSG2A DISPLAY Scope H oj iwem a RER o an CH1 Position CH2 Posiion Trig Postion y Cursor TigEdge Poste 7 SEN e BEET Hor Postion C1 cz TrigMode Freeunning x Cursor Ch CHT Se 2 1 in ADC Mode Samping Mode Time Base sep Display 10dBm Div Cursor OFF B bit40Ms Undersampling DURENAN 2048 samples Using Freguency Counter Freguency counter have 3 freguency ranges Range 1 Hz 20 MHz uses scope channel one CH1 IN input amplifier to allow dc coupling for low freguency counting and amplitude adjustment Range 10 300 MHz and range 200 2000 MHz uses presales and are ac coupled with input impedance of 50 ohm And it reguires 50 ohm coax cable connection Calibration Device is calibrated by adjusting calibration data in calibration file which is unigue for each d
19. um Frequency 200MHz EA 7 Amplitude Range 10mV 5000m zi Multiplier Sampl t ns Start point Final point Profile t ns Mi gei fo Profile 1 100 0 1 0 o Profile2 10 0 1 0 Abita voltage E Load Profile from file fc Program Files DDSG2A Voltage1 tx Dee E Enable Profile 2 Modulation Output Source Type BREESE 10 us E ven Pause 15 us Z Update CalData InputVfortoo AM dv Mode CLK 400MHz Sweep Generator I Frequency i khz Start Fr 0 Hz a ue k f I 20 dB Atten saam DO Hz A Amplitude 1 Vpp Z M 50ohmterm Offset 0 V Manual Steps 1000 Step time 600 us g he RUN P Refresh STOP Single sweep DISPLAY 1 CHT Postion CH2 Posiion Trig Postion Vase Hor Position CI C2 GE Sweep Display 10dBm Div Cursor OFF zl xi Mode Frequency Sweep x Fequency Sweep Stat 1 Sweep Monitor Freq 99 845 632 He dBm CH2 IN Running EET Reset DDSG2A Cal Offset CusorCh CH E e 117717057 fastsampling com DDSG2A Arbitrary Function Generator User Manual Generator Specification Page 5 of 19 Parameter Min Max Typical Description Comments Time Base Accuracy Derived From TCXO Data 2 5ppm Sheet Increase distortion and No amplitude calibration for Freguency range 0 01 Hz 100 MHz freguencies 100 200Mhz due to Sine Wave max DDS DAC sample clock of 400MS S
20. vertical both noise exit in hi speed adc mode 7 23 2008 fastsampling com DDSG2A Arbitrary Function Generator User Manual Page 16 of 19 Using FFT Spectrum Analyzer FFT spectrum analyzer can be used in CH1 only HB 0 Scope CH1 or CH2 only mode 2048 samples box have to be checked before scope start Select time base so that freguency of interest 1s covered with at least 10 or more periods Select volt dive so that amplitude covers between half and of vertical display Use 12 bit ADC if frequency is low like in audio range for greater dynamic range Click RUN to display waveform as scope and M 6 375 Hz DISPLAY Scope D d froum z 0 FFT Dipsy ars fill buffer CHT Postion CH2 Postion Trio Postion vz E Positive zl Em oset Click STOP and then FFT button A A v eps IT al Display 100mVrms Div x Cursor OFF 12 bit480Ks sel Realtime el MEET 7 V 2048 samples Picture on right shows 1 kHz 5Vpp sine wave generated with same device generator using 12 bit ADC Moving mouse over display will update freguency and magnitude information found at the bottom of screen Using Interleaved Under Sampling Oscilloscope Interleaved sampling mode allows hi resolution timing measurements by using synchronizing signal source generator with scope and by controlling sampling phase This mode can not work properly if signal did not originate from same genera
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