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Applying a window to the YT waveform changes the waveform so that the start and stop values are close to each
other, which reduces the discontinuities.

The Math FFT function has three FFT Window options. There is a trade-off between frequency resolution and
amplitude accuracy for each type of window. You shall determine which one to choose according to the object you
want to measure and the source signal characteristics.

Window

Measurement

Characteristics

Hanning

Periodic Waveform

Better frequency, poorer amplitude accuracy than Flattop

Flattop

Periodic Waveform

Better amplitude, poorer frequency accuracy than Hanning

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Summary of Contents for DSO2000

Page 1: ...DSO2000 Digital Storage Oscilloscope User Manual Saluki Technology Inc...

Page 2: ...g models DSO2072 Digital Storage Oscilloscope DSO2102 Digital Storage Oscilloscope DSO2202 Digital Storage Oscilloscope DSO2062A Digital Storage Oscilloscope DSO2102A Digital Storage Oscilloscope DSO2...

Page 3: ...t which should not be modified or tampered by any organization or individual or reproduced or transmitted for the purpose of making profit without its prior permission otherwise Saluki will reserve th...

Page 4: ...886 2 2175 2930 Email sales salukitec com www salukitec com 4 Contacts Service Tel 886 2 2175 2930 Website www salukitec com Email info salukitec com Address No 367 Fuxing N Road Taipei 105 Taiwan R...

Page 5: ...up 15 4 2 Trigger 15 4 3 Data Acquisition 16 4 4 Waveform Scaling and Positioning 17 4 5 Waveform Measurement 18 5 Basic Operation 19 5 1 User Interface 19 5 2 Horizontal System 21 5 3 Vertical Contro...

Page 6: ...Overtime Trigger to Measure Long Pulse Signal 63 6 10 Example 10 Using Math Functions to Analyze Waveforms 64 6 11 Example 11 Measuring Data Propagation Delay 65 6 12 Example 12 Play Video 66 7 Troub...

Page 7: ...lectric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Connect t...

Page 8: ...this mark personal injury may be caused to immediately Waning The term Warning is used in the manual to indicate that when you read this mark personal injury may not be caused to you immediately but...

Page 9: ...methods the oscilloscope provides context sensitive hyperlinks and an index you may master all operations on the device in quite a short time so as to greatly improve your efficiency in production and...

Page 10: ...as Autoset They are links to other topics Turn the HELP SCROLL knob to move the highlight from one link to another Push the Show Topic option button to display the topic corresponding to the highligh...

Page 11: ...below to perform a quick functional check to your oscilloscope 3 2 1 Power on the oscilloscope Plug in the oscilloscope and press the ON OFF button Then push the DEFAULT SETUP button The default Probe...

Page 12: ...electric shock Do not touch metallic portions of the probe head while it is connected to a voltage source Connect the probe to the oscilloscope and connect the ground terminal to ground before you sta...

Page 13: ...pe of the displayed waveform 3 If necessary use a nonmetallic screwdriver to adjust the variable capacity of your probe until the shape of the waveform turns to be the same as the above figure Repeat...

Page 14: ...utine at any time but should always run it if the ambient temperature changes by 5 or more For a more accurate calibration please power on the oscilloscope and wait for 20 minutes until it has adequat...

Page 15: ...d setups and the default factory setup Default Setup The oscilloscope is preset for normal operations when it is shipped from the factory This is the default setup You may recall this setup at any tim...

Page 16: ...ly view the effectively triggered waveforms In this mode the oscilloscope displays waveforms only after the first trigger To perform a single sequence acquisition push the SINGLE SEQ button Trigger Co...

Page 17: ...lloscope digitizes waveforms by acquiring the value of an input signal at discrete points The time base helps to control how often the values are digitized Use the SEC DIV knob to adjust the time base...

Page 18: ...nd maximum values of a waveform and knew you had a scale factor of 50mV division you could easily calculate your peak to peak voltage as follows 6 divisions x 50mV division 300mV Cursor This method al...

Page 19: ...nal areas In this chapter we will give a quick overview of all control buttons and knobs on the front panel as well as the displayed information on the screen and relative testing operations The figur...

Page 20: ...p it means the keyboard of the oscilloscope is locked by the host computer via USB control If this icon lights up it means the USB disk has been connected This icon lights up only when the USB slave i...

Page 21: ...o perform this operation stop the acquisition and change the display format to XY The table below shows how to operate some controls in XY format Controls Usable or not in XY format CH1 VOLTS DIV and...

Page 22: ...ks by right and left arrows Then it positions the window to this mark for further observation Holdoff None Select this menu and turn the multi functional knob to adjust the trigger holdoff time within...

Page 23: ...ly If the waveform acquisition is stopped by using the RUN STOP or SINGLE SEQ button the SEC DIV control will expand or compress the waveform In dual window mode push this knob to select major or mino...

Page 24: ...om left to right without any trigger or horizontal position control 5 3 Vertical Controls Vertical controls can be used to display and remove waveforms adjust vertical scale and position set input par...

Page 25: ...volt waveform Internally the channel input is connected with a zero volt reference level Fine Resolution In the fine resolution setting the vertical scale readout displays the actual VOLTS DIV setting...

Page 26: ...to convert a time domain YT signal into its frequency components spectrum and to observe the following types of signals Analyze harmonics in power cords Measure harmonic content and distortion in syst...

Page 27: ...can also generate a useful FFT spectrum despite the YT waveform not being triggered This is especially true if the signal is periodic or random such as noise Note You should trigger and position trans...

Page 28: ...n 5 3 1 6 Vertical Base Vrms dBrms Set the Vertical Base in a mode 1 Frequency at the center graticule line 2 Vertical scale in dB per division 0dB 1VRMS 3 Horizontal scale in frequency per division 4...

Page 29: ...three FFT Window options There is a trade off between frequency resolution and amplitude accuracy for each type of window You shall determine which one to choose according to the object you want to me...

Page 30: ...there is no need to observe the frequency components above 20MHz set the Bandwidth Limit option to Limited Filter the signal input from outside and limit the bandwidth of the source waveform to lower...

Page 31: ...ed to 0db that equals 1VRMS here You may use cursors to measure at any zoom factor Push the CURSOR button choose the Source option and then select Math Press the Type option button to select between A...

Page 32: ...lows a trigger level range of 1 6V to 1 6V EXT 5 Same as EXT option but attenuates the signal by a factor of 5 and allows a trigger level range of 8V to 8V AC Line Uses a signal derived from the power...

Page 33: ...ggers on the positive edge of the sync pulse Sync All Lines Line Number Odd Field Even Field All Fields Choose a proper video sync When selecting Line Number for the Sync option you may use the User S...

Page 34: ...Coupling AC DC HF Reject LF Reject Select the components of the trigger signal applied to the trigger circuit Pulse Width Set the Pulse Width Trigger When The pulse width of the source must be 5ns so...

Page 35: ...by setting two trigger levels Select this option and press F3 to choose V1 or V2 When Select the trigger condition Time 20ns to 10 0sec With this option highlighted by pressing F4 turn the multi func...

Page 36: ...e Rising Falling Coupling AC DC HF Reject LF Reject Push F3 or F4 to select the components of the trigger signal applied to the trigger circuitry Type Video Polarity Normal Inverted Standard NTSC PAL...

Page 37: ...on Time 20ns to 10 0sec Press F4 to select this option Turn the multi functional knob to set the time span 9 Overtime Trigger In Pulse Width trigger you may sometimes be puzzled with the long time for...

Page 38: ...ff time can be adjusted to let the oscilloscope trigger only on the first pulse in the train 5 5 Menu and Option Buttons As shown below these six buttons at the top of the front panel are used mainly...

Page 39: ...y 0 to 9 Specify the memory location in which to store the current waveform settings or from which to recall the waveform settings Use the V0 knob to select Operation Save Complete the saving operatio...

Page 40: ...0 of the first rising edge of the waveform 10 Falling Measure the time between 90 and 10 of the first falling edge of the waveform 11 Width Measure the time between the first rising edge and the next...

Page 41: ...e first rising edge of source 1 and the last rising edge of source 2 31 FFR The time between the first falling edge of source 1 and the first rising edge of source 2 32 FRF The time between the first...

Page 42: ...ossibility of aliasing This mode is valid at the SEC DIV setting of 4 s div or slower Once you set the SEC DIV setting to 4 s div or faster the acquisition mode will change to Normal because the sampl...

Page 43: ...left corner is highlighted Click on this icon and you can see the waveform pause for a while being saved You can find the saved waveform data under the pic_x folder in the USB disk Here X represents...

Page 44: ...Type Off Voltage Time Track Select a measurement cursor and display it Voltage measures amplitude while Time measures time and frequency Source CH1 CH2 MATH REFA REFB Select a waveform to take the cur...

Page 45: ...time horizontal scale XY format displays a dot between CH1 and CH2 each time when a sample is acquired where the voltage or current of CH1 determines the X coordinate of the dot horizontal and the vo...

Page 46: ...can accurately display the waveform of the input signal Functions Settings Acquire Mode Adjusted to Normal or Peak Detect Cursor Off Display Format Set to YT Display Type Set to Vectors for an FFT spe...

Page 47: ...5 3 1 Math FFT for more information Undo Setup Let the oscilloscope recall the previous setup Square Wave or Pulse When you use the Autoset function and the oscilloscope determines that the signal is...

Page 48: ...litude 3 2div Vertical time 4div Display Type Vectors Persist Off Format YT Horizontal Window Mode Single window Trigger Knob Level Position 0 00s SEC DIV 200 s Math Operation Source CH1 CH2 Position...

Page 49: ...s Polarity Positive Mode Auto Coupling DC Trigger Slope Slope Rising Mode Auto Coupling DC When Trigger Alter CH1 Type Edge Slope Rising Mode Auto Coupling DC Level 0 00v CH2 Type Edge Slope Rising Mo...

Page 50: ...rtime trigger and slope trigger select menu options and so on Easy to operate F7 Push this button in single window mode to switch between dotted line display and cross display Push it in dual window m...

Page 51: ...ct and input the signal to be measured 2 EXT TRIG Input connector for an external trigger source though with to connect and input the external trigger signal 3 Probe Compensation Voltage probe compens...

Page 52: ...Y mode 6 Triggering on a pulse width 7 Triggering on a video signal Observing triggers on video fields and video lines 8 Using Slope Trigger to capture a particular slope signal 9 Using Overtime Trig...

Page 53: ...the MEASURE button to see the Measure menu 2 Turn the knob V0 to select the first unspecified option marked by red arrow press V0 or F6 to enter the submenu 3 Select CH1 for the Source option Then re...

Page 54: ...he Source option button and select CH1 4 Push F4 to select a cursor If S is selected turn V0 to move Cursor S on the screen if E is selected turn V0 to move Cursor E if both are selected turn V0 to mo...

Page 55: ...F3 the Source option button and select CH1 4 Push F4 to select a cursor If S is selected turn V0 to move Cursor S on the screen if E is selected turn V0 to move Cursor E if both are selected turn V0 t...

Page 56: ...sh the CH1 MENU button 4 Push the VOLTS DIV option button and select Fine Turn the VERTICAL POSITION knob to accurately separate the waveform into 5 divisions 5 Turn the VERTICAL POSITION knob to cent...

Page 57: ...to analyze this signal Observing Noisy Signal 1 Press the ACQUIRE button to see the Acquire menu 2 Push the Type option button and select Real Time 3 Push the Peak Detect option button 4 If necessary...

Page 58: ...c signals like pulses and glitches To set for a single shot acquisition follow the steps below 1 First set up the oscilloscope probe and the attenuation factor of CH1 2 Turn the vertical VOLTS DIV and...

Page 59: ...ISPLAY button to see the Display menu 7 Push the Format option button and select XY 8 Now the oscilloscope displays a Lissajous pattern to characterize the input and output of the circuit 9 Turn the V...

Page 60: ...Push F1 to select Pulse for the Type option push F2 to select CH1 for the Source option turn the TRIGGER LEVEL knob to set the trigger level at the bottom of the signal 6 Push F6 to enter the next pa...

Page 61: ...eo Fields To trigger on the video fields follow the steps below 1 Push the TRIG MENU button to see the Trigger menu 2 Push F1 to select Video for the Type option 3 Push the Source option button to sel...

Page 62: ...to select Line Number 4 Turn the Trigger Level knob to adjust the trigger level and stabilize video signals 5 Turn V0 to adjust the line number NTSC 0 525 lines 6 Turn the horizontal SEC DIV and the v...

Page 63: ...See the figure below 6 9 Example 9 Using Overtime Trigger to Measure Long Pulse Signal It is not easy to observe some part of a long pulse signal by using the edge or pulse width trigger In such case...

Page 64: ...forms By using the math function of the oscilloscope you can get a better representation of the waveform on the screen To observe this signal follow the steps below 1 Set the Probe option attenuation...

Page 65: ...bilities in a serial data propagation control circuit you can set the oscilloscope to measure the propagation delay between the enable signal and the transfer data To set the propagation delay measure...

Page 66: ...put transition See the figure below 10 Read the data propagation delay in the Delta readout 6 12 Example 12 Play Video The video playing function supports playing mpg avi flv mp3 vob wmv swf mp4 ect f...

Page 67: ...cilloscope inner storage card files 3 Press the key F5 to select the U disk or the oscilloscope inner storage card file when the SD is red the oscilloscope inner storage card is selected When the USB...

Page 68: ...C signals with large magnitude 6 In addition you may press the Auto Measure button to perform an automatic detection of signals at first Contact our Technical Support department in time if there is st...

Page 69: ...mine the oscilloscope and probes as often as operating conditions require To clean the exterior surface perform the following steps 1 Use a lint free cloth to remove floating dust on the outside of th...

Page 70: ...Fastener and Installed Hardware X 0 X X 0 0 Other Accessories including probes X 0 0 X 0 0 Others 0 0 0 0 0 0 X means that at least the content of this poisonous and harmful substance in a homogeneous...

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