Digital Storage Oscilloscope GDS-3000 Series USER MANUAL GW INSTEK PART NO.
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TABLE OF CONTENTS Table of Contents SAFETY INSTRUCTIONS ................................................... 5 GETTING STARTED ......................................................... 10 GDS-3000 Series Overview ................... 11 Appearance .......................................... 17 Set Up .................................................. 28 QUICK REFERENCE ......................................................... 36 Menu Tree / Operation Shortcuts ........ 38 Default Settings ....................
GDS-3000 Series User Manual Create/Edit file labels ......................... 151 Save ................................................... 153 Recall ................................................. 160 Reference Waveforms ......................... 165 FILE UTILITIES ............................................................... 167 PRINT OUT .................................................................... 174 REMOTE CONTROL CONFIG .........................................
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS This chapter contains important safety instructions that you must follow during operation and storage. Read the following before any operation to insure your safety and to keep the instrument in the best possible condition. Safety Symbols These safety symbols may appear in this manual or on the GDS3000. WARNING Warning: Identifies conditions or practices that could result in injury or loss of life.
GDS-3000 Series User Manual Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Safety Guidelines General Guideline CAUTION Make sure the BNC input voltage does not exceed 300Vrms. Never connect a hazardous live voltage to the ground side of the BNC connectors. It might lead to fire and electric shock. Do not place any heavy object on the GDS-3000.
SAFETY INSTRUCTIONS Power Supply WARNING Cleaning the GDS-3000 Operation Environment AC Input voltage: 100 ~ 240V AC, 48 ~ 63Hz, auto selection. Power consumption: 96VA. Connect the protective grounding conductor of the AC power cord to an earth ground, to avoid electrical shock. Disconnect the power cord before cleaning. Use a soft cloth dampened in a solution of mild detergent and water. Do not spray any liquid.
GDS-3000 Series User Manual Disposal 8 Do not dispose this instrument as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Please make sure discarded electrical waste is properly recycled to reduce environmental impact.
SAFETY INSTRUCTIONS Power cord for the United Kingdom When using the oscilloscope in the United Kingdom, make sure the power cord meets the following safety instructions.
GDS-3000 Series User Manual GETTING STARTED This chapter describes the GDS-3000 in a nutshell, including its main features and front / rear panel introduction. After going through the overview, follow the Set Up section to properly set up the oscilloscope for first-time use. The Set Up section also includes a starter on how to use this manual effectively. GDS-3000 Series Overview .............................................. 11 Series lineup ..............................................................
GETTING STARTED GDS-3000 Series Overview Series lineup The GDS-3000 series consists of 8 models, divided into 2-channel and 4-channel versions. Model name Frequency bandwidth Input channels Real-time Sampling Rate GDS-3152 150MHz 2 2.5GSa/s GDS-3252 250MHz 2 2.
GDS-3000 Series User Manual The 2 channel and 4 channel models differ in the position of the horizontal controls, the math, reference and bus keys as well as the position of the EXT trigger.
GETTING STARTED Interface Three standard input impedances (50Ω/75Ω/1MΩ) Optional power measurement functions are available for fast analysis of power quality tests Optional analysis software for I2C, SPI and UART serial signal triggering and decoding 2 and 4 channel models available up to 500 MHz Large 8” color TFT LCD, supporting a large 8 x 10 graticule On-screen Help 64 MB internal flash memory.
GDS-3000 Series User Manual GPIB to USB adapter Optional Accessories 14 GPIB Interface Part number Description GTC-001 Instrument cart, 470(W)x430(D)mm (U.S. type input socket) GTC-002 Instrument cart, 330(W)x430(D)mm (U.S. type input socket) GTL-110 test lead, BNC to BNC heads GTL-232 RS-232C cable, 9-pin Female to 9-pin female, Null modem for computer GTL-246 USB cable, USB2.
GETTING STARTED GTP-351R Passive probe; 350 MHz, 10X with readout GTP-501R Passive probe, 500MHz, 10X with readout Drivers USB driver LabVIEW driver 15
GDS-3000 Series User Manual Package Contents Check the contents before using the GDS-3000. Opening the Box Contents Main unit Probe set GTP-151R for GDS-3152 / GDS-3154 GTP-251R for GDS-3252 / GDS-3254 GTP-351R for GDS-3352 / GDS-3354 GTP-501R for GDS-3502 / GDS-3504 Note 16 Power cord User manual (this document) For detailed probe specifications, see page 202. The programming manual, PC software, and USB driver are downloadable from the GW Instek website. Visit www.gwinstek.
GETTING STARTED Appearance GDS-3504/3354/3254/3154 Front Panel Function Split window Horizontal cluster keys controls Variable knob and select key LCD GDS-3354 VARIABLE Digital Storage Oscilloscope 350 MHz 5 GS/s Visual Persistence Oscilloscope HORIZONTAL TRIGGER POSITION LEVEL Trigger controls Autoset Print Run/Stop Print/Save key Bottom menu keys Save Zoom Split Window Select Menu Single TIME/DIV Side menu keys Measure Cursor Test Acquire 50 % Default Setup Display Help Save/R
GDS-3000 Series User Manual LCD Display Menu Key Side Menu Keys Bottom Menu Keys 8” SVGA TFT color LCD. 800 x 600 resolution, wide angle view display. Use the Menu Off key to hide the onscreen menu system. The Side menu and Bottom menu keys are used to make selections from the soft-menus on the LCD user interface. To choose menu items, use the 7 Bottom menu keys located on the bottom of the display panel. To select a variable or option from a menu, use the Side menu keys on the side of the panel.
GETTING STARTED Split Window Cluster Horizontal Controls Use the Split Window key to cycle between single and split screen mode. For more details on windowing, see page 66. The horizontal controls are used to change the position of the cursor, set the time base settings, and to zoom into the waveforms. Horizontal Position The Position knob is used to position the waveforms horizontally on the display screen. Zoom Press Zoom in combination with the horizontal POSITION knob.
GDS-3000 Series User Manual Autoset Press the Autoset key to automatically set the trigger, horizontal scale and vertical scale. Run/Stop Key Press to freeze (Stop) or continue (Run) signal acquisition (page59). Single Sets the acquisition mode to single triggering mode. Default Setup Resets the oscilloscope to default settings. Auto-Range Sets the oscilloscope range automatically. Vertical POSITION Sets the vertical position of the waveform.
GETTING STARTED Reference Key BUS Keys Function Keys Press the Reference key to set or remove reference waveforms. R B1 B2 The Serial bus decode keys are used for UART, I2C and SPI serial bus interface decoding. The serial bus decode function is an optional extra. See page 95 for details. The Function Keys are used to enter and configure different functions on the GDS-3000. Measure Configures and runs automatic measurements. Cursor Configures and runs cursor measurements.
GDS-3000 Series User Manual USB Host Port TypeA, 1.1/2.0 compatible. Used for data transfer. Ground Terminal Accepts the DUT ground lead for common ground. Probe Compensation Output Outputs 2Vp-p, square wave signal for probe compensation (page 191). External Trigger Input Accepts external trigger signals (page 125). Input impedance: 1MΩ±3%, Voltage input: ±15V(peak), EXT trigger capacitance:~16pF. Power Switch Used to turn the power on/off.
GETTING STARTED Rear Panel Trigger output Go/No Go output Video Out RS232C Output Line out LAN Port Ground strap connector Calibration output USB Device/ Host port Key lock Fan Power input Rear socket stand Calibration Output Outputs the signal for vertical scale accuracy calibration (page 187). Trigger Output Outputs the trigger timing. Go-No Go Output Outputs Go-No Go test results (page 87) as 500us pulse signal. Video Out Outputs SVGA resolution to an external display.
GDS-3000 Series User Manual LAN Port Ethernet port. Ground Strap Connector For use with a grounding strap. USB Device Port The USB device port is used for remote control and for the FreeWave remote control software. USB 1.1/2.0 high speed compatible. USB Host The USB host port supports USB flash drives for external memory. USB 1.1/2.0 high speed compatible. Security Slot Kensington security slot compatible. Power Input Socket Power cord socket accepts AC mains, 100 ~ 240V, 50/60Hz.
GETTING STARTED Display Acquistion mode Memory bar Trigger status Trigger position Horizontal status Channel status Automatic measurements Waveforms Trigger level Waveform Channel indicator Date and time Signal frequency Trigger configuration Shows input signal waveforms. Channel 1: Yellow Channel 2: Blue Channel 3: Pink Channel 4: Green Channel Indicator The channel indicator shows the zero volt level of the signal waveform for each activated channel.
GDS-3000 Series User Manual Date and Time Current date and time (page 144). Memory Bar The ratio and the position of the displayed waveform compared with the internal memory (page 112). Trigger Status Triggered. Not triggered, display not updated. Trigger stopped. Also appears in Run/Stop (page59). Roll mode. Auto trigger mode. For trigger details, see page 125. Acquisition Mode Normal mode Peak detect mode Hi Resolution Average mode For acquisition details, see page 100.
GETTING STARTED Trigger Configuration Trigger source, slope, voltage, coupling. Trigger source, trigger (video), field, line, coupling. For trigger details, see page 125. Channel Status Channel 1, inverted, AC coupling, 1V/Div Channel 1, GND coupling, 1V/Div For channel details, see page 117.
GDS-3000 Series User Manual Set Up Tilt Stand Upright Turn the legs under the casing as shown below to have the instrument sit upright. Tilt To tilt, tilt the legs back behind the casing, as shown below.
GETTING STARTED Power Up Step 1. Connect the power cord to the rear panel socket. AC 2. Press the POWER key. The display becomes active in ~ 30 seconds. : ON : OFF Note The GDS-3000 recovers the state right before the power is turned OFF. The default settings can be recovered by pressing the Default key on the front panel. For details, see page 160.
GDS-3000 Series User Manual First Time Use Background This section describes how to connect a signal, adjust the scale, and compensate the probe. Before operating the GDS-3000 in a new environment, run these steps to make sure the instrument performs at its full potential. 1. Power On Follow the procedures on the previous page. 2. Set the Date and Time Set the date and time. 3. Reset System Reset the system by recalling the factory settings. Press the Default Setup key on the front panel.
GETTING STARTED 6. Capture Signal Press the Autoset key. A square (Autoset) waveform appears on the center of the screen. For Autoset details, see page 58. Autoset 7. Select Vector Waveform Press the Display key, and set the display to Vector on the bottom menu. 8. Compensate Probe Turn the adjustment point on the probe to make the square waveform edge flat.
GDS-3000 Series User Manual 9. Start Operation Continue with the other operations. Measurement: page 55 Configuration: page 87 Save/Recall page 146 File Utilities page 166 Print Out 174 Remote Control page 177 How to Use This Manual Background This section describes the conventions used in this manual to operate the GDS-3000. Throughout the manual any reference to pressing a menu key refers to the keys directly below or beside any menu icons or parameters.
GETTING STARTED Selecting a Menu When the user manual says to “select” a value Item or Parameter from one of the side menu parameters, first press the corresponding menu key and use the variable knob to either scroll through a parameter list or to increase or decrease a variable. 3 2 1 Example 1. Press a bottom menu key to access the side menu. 2. Press a side menu key to either set a parameter or to access a sub menu. 3.
GDS-3000 Series User Manual Toggling a Menu Parameter 1 1. Press the bottom menu key to toggle the parameter.
GETTING STARTED 1. Press the relevant function key again to reduce the bottom menu. For example: press the trigger menu key to reduce the trigger menu.
GDS-3000 Series User Manual QUICK REFERENCE This chapter describes the GDS-3000 menu tree, shortcuts to major operations, built-in Help access, and default factory settings. Use them as a handy reference to get a quick access to the functionality. Menu Tree / Operation Shortcuts .................................... 38 Convention ........................................................................... 38 Acquire Key ..........................................................................
QUICK REFERENCE Default Settings .............................................................. 52 Built-in Help ...................................................................
GDS-3000 Series User Manual Menu Tree / Operation Shortcuts Convention For all menu trees, bottom menu keys are shown as grey icons and side menu keys are shown in white. All menu tree operations are shown in order from top to bottom. Below is an example of the menu tree operation for the trigger source menu and a comparison to the operation on the DSO screen.
QUICK REFERENCE Acquire Key Sets the acquisition mode. Acquire Mode Reset H Position to 0s Sample Peak Detect Hi Resolution Average 2,4,8,16,32,64, 128,256 XY ET OFF'YT( ET Sin(x)/x Sample rate XXXMSPS Triggered XY Autoset Key Automatically finds the signal and sets the horizontal and vertical scale.
GDS-3000 Series User Manual Auto-Range Constantly adjusts the vertical and or horizontal scale. Auto-Range Autoranging Vertical Only Vertical And Horizontal Horizontal Only Mode ON OFF Undo Autoranging Fit Screen AC Priority CH1 ~ 4 Key Set the channel input parameters.
QUICK REFERENCE Cursor Key Set cursor positions. Cursor H Cursor V Cursor Display Key Set the display properties. Display Dot Vector Persistence Intensity Waveform Graticule Dot Vector Time Auto 100ms~10s Infinite VPO Off Clear Persistence Waveform Intensity Gray Color Full Grid Cross Hair Frame 0%~100% Graticule Intensity 10%~100% Help Key Turn help mode On/Off.
GDS-3000 Series User Manual Math Key Standard math and FFT functions.
QUICK REFERENCE Measure Key Display automatic measurements either individually or as voltage/current, time or delay measurement groups.
GDS-3000 Series User Manual Print/Save Key Print or save screen images.
QUICK REFERENCE Save/Recall Key Save and recall images, waveforms and panel setups. Edit labels for reference and setup files. Save/Recall Save Image Save Waveform File Format Png Bmp Ink Saver On Off From CH1~CH4 Math Ref1~4 All Displayed To Ref 1 ~ Ref4 Wave1~20 To File Filename.LSF Filename.CSV Save Now File Utilites Recall Waveform Save Setup To Set1~Set20 To File Filename.set From Wave1~20 From File Filename.LSF To Ref1~Ref4 From Set1~Set20 From File Filename.
GDS-3000 Series User Manual Test Key Use the Go-NoGo application as well as additional optional software such as the Power Analysis software. Test APP.
QUICK REFERENCE Trigger Type Menu Menu Type Edge Delay Pulse Width Video Others Pulse Runt Rise & Fall Bus Trigger Edge Menu Type Edge Source Coupling CH1~ CH4 EXT AC Line EXT Probe Volt Current Alternate On Off Attenuation 1mX ~ 1kX DC AC Reject Off HF LF Noise Reject On Off Slope Level Mode Holdoff -XX~XXV Auto Normal 10.0ns~ 10.0s Set to Minimum Delay Mode / Holdof Set to TTL 1.4V Set to ECL -1.
GDS-3000 Series User Manual Trigger Pulse Width Menu Type Pulse Width Source Polarity CH1~ CH4 EXT AC Line EXT Probe Volt Current Alternate On Off Attenuation 1mX ~ 1kX When > < = ≠ > 4.00ns~10.0S Threshold Mode Holdof -XX~XXV Auto Normal 10.0ns ~ 10.0s Set to TTL 1.4V Set to ECL -1.
QUICK REFERENCE Trigger Pulse Runt Menu Type Pulse Runt Source Polarity When > < = ≠ Input CH1 CH2 CH3 CH4 EXT Probe Volt Current Alternate On Off > 4.00ns~10.0s Threshold Mode Holdof -XX~XXV Auto Normal 10.0ns~10.0s Set to Minimum -XX~XXV Set to TTL 1.4V Set to ECL -1.3V Trigger Rise & Fall Menu Type Rise & Fall Source Input CH1 CH2 CH3 CH4 EXT Probe Volt Current Alternate On Off Slope When Threshold Mode Holdof > < = ≠ High -XX~XXV Low -XX~XXV Set to TTL 1.4V Set to ECL -1.
GDS-3000 Series User Manual Utility Key Utility Language System English Trad. Chinese Simp. Chinese Korean Japanese etc.
QUICK REFERENCE Utility Key – File Utilities File Utilities Create Folder Rename Keypad Keypad Delete Copy To USB Enter Character Enter Character Back Space Back Space Editing Completed Editing Completed Cancel Cancel Zoom Key Zoom Fine Coarse Reset Zoom Reset H Position Position to 0s to 0s Fine Coarse 51
GDS-3000 Series User Manual Default Settings The default factory installed settings can be recalled at any time by pressing the Default Setup key.
QUICK REFERENCE Slope: positive Level: 0.00V Mode: Auto Holdoff: 10.
GDS-3000 Series User Manual Built-in Help The Help key accesses a context sensitive help menu. The help menu contains information on how to use the front panel keys. Panel Operation 1. Press the Help key. The display changes to Help mode. Help 2. Use the Variable knob to scroll up and down through the Help contents. Press Select to view the help on the selected item. Home Key Press the Home key to return to the main help screen. Go Back Press the Back key to go to the previous menu page.
MEASUREMENT MEASUREMENT Basic Measurement ......................................................... 57 Channel Activation .............................................................. 57 Autoset .................................................................................. 58 Auto-Range ........................................................................... 60 Run/Stop .............................................................................. 62 Horizontal Position/Scale......................
GDS-3000 Series User Manual Serial Bus Overview .............................................................
MEASUREMENT Basic Measurement This section describes the basic operations required in capturing and viewing the input signal. For more detailed operations, see the following chapters. Cursor Measurement → from page 76 Configuration → from page 87 Before operating the oscilloscope, please see the Getting Started chapter, page 10. Channel Activation Activate Channel To activate an input channel, press a channel key. CH1 à CH1 When activated, the channel key will light up.
GDS-3000 Series User Manual Default Setup To activate the default state, press Default Setup. Autoset The Autoset key (page 58) does NOT automatically activate the channels to which input signals are connected. Default Setup Autoset Background The Autoset function automatically configures the panel settings to position the input signal to the best viewing condition. The GDS-3000 automatically configures the following parameters.
MEASUREMENT Before After 3. To undo Autoset, press Undo Autoset from the bottom menu. To remove the Undo Autoset softkey, press any other key. Change modes 1. Choose between Fit Screen Mode and AC Priority Mode from the bottom menu. 2. Press the Autoset key again to use Autoset in the new mode. Fit Screen Mode Limitation Autoset AC Priority Autoset does not work in the following situations.
GDS-3000 Series User Manual Auto-Range Background The Auto-Range function works similarly to the Autoset function, except the Auto-Range function works continuously when it is on. The Auto-Range function will continuously monitor the input signal and adjust the horizontal and vertical scale of a displayed signal so that waveform(s) are displayed at the best possible scale. In addition, the Auto-Range function can also be configured to only adjust the vertical or horizontal scale.
MEASUREMENT 3. To undo Auto-Range, press Undo Autoranging from the bottom menu. Disable AutoRange Press Autoranging from the bottom menu to turn Auto-Range On/Off. Configure AutoRange Press Vertical Only for vertical autoranging only. Press Horizontal Only for horizontal autoranging only. Press Horizontal and Vertical for autoranging on both axes. Change modes 1. Choose between Fit Screen Mode and AC Priority Mode from the bottom menu. 2. Press the Auto-Range key twice to reset the Auto-Range function.
GDS-3000 Series User Manual Run/Stop Background By default, the waveform on the display is constantly updated (Run mode). Freezing the waveform by stopping signal acquisition (Stop mode) allows flexible observation and analysis. To enter Stop mode, two methods are available: pressing the Run/Stop key or using the Single Trigger mode. Stop mode icon When in Stop mode, the Stop icon appears at the top of the display. Triggered icon Freeze Waveform Press the Run/Stop key once.
MEASUREMENT Horizontal Position/Scale For more detailed configuration, see page 112. Set Horizontal Position The horizontal position knob moves the waveform left and right. As the waveform moves, the memory bar on the top of the display indicates the portion of the waveform currently shown on the display and the position of the horizontal marker on the waveform. Position Indicator The horizontal position is shown at the bottom of the display grid to the right of H icon.
GDS-3000 Series User Manual The Time/Division rate is displayed to the left of the H icon at the bottom of the screen. Memory bar The size of the memory bar changes to reflect the timebase and the section of the waveform that is displayed on screen. Fast Medium Slow The Sample rate changes according to the time/division. For example the sample rate of the GDS-3304 at different time bases is shown below.
MEASUREMENT Vertical Position/Scale For more detailed configuration, see page117. Set Vertical Position To move the waveform up or down, turn the vertical position knob for each channel. Up POSITION Down As the waveform moves, the vertical position of the cursor appears on the display. Run/Stop mode Select Vertical Scale The waveform can be moved vertically in both Run and Stop mode. To change the vertical scale, turn the VOLTS/DIV knob; left (down) or right (up).
GDS-3000 Series User Manual Split Window Mode The split window mode is able to display and trigger each active channel independently. The split window mode is especially useful for signal comparisons. Reference waveforms can also be used in this mode. Most functions and features can be used with split screen mode except for the Math, XY display and Zoom mode. Enter Split Screen 1. Activate each channel that is CH1 à CH1 Mode to be used in the split screen page 57 mode. 2.
MEASUREMENT Select Active Channel To select the active channel, press the corresponding split window key: 4 Window split screen: Reference Waveforms 2 window split screen: Window 1 Window 2 Window 1 Window 1 Window 3 Window 4 Window 2 Window 2 Reference waveforms can also be used in this mode. Each reference waveform will be recalled to the corresponding split window number. I.e., Ref1 will be recalled to the first split window, Ref2 to the second window and so on.
GDS-3000 Series User Manual Automatic Measurement The automatic measurement function measures and updates major items for Voltage/Current, Time, and Delay type measurements. Measurement Items V/I Measurements Time Meas. Overview Delay Meas.
MEASUREMENT Time Measurement High Global high voltage Low Global low voltage Average Averaged voltage of the first cycle RMS RMS (root mean square) voltage ROVShoot Rise overshoot voltage FOVShoot Fall overshoot voltage RPREShoot Rise preshoot voltage FPREShoot Fall preshoot voltage Frequency Frequency of the waveform Period Waveform cycle time (=1/Freq) RiseTime Rising time of the pulse (~90%) FallTime Falling time of the pulse (~10%) +Width Positive pulse width –Width Negative
GDS-3000 Series User Manual Delay Measurement 70 FRR Time between: Source 1 first rising edge and Source 2 first rising edge FRF Time between: Source 1 first rising edge and Source 2 first falling edge FFR Time between: Source 1 first falling edge and Source 2 first rising edge FFF Time between: Source 1 first falling edge and Source 2 first falling edge LRR Time between: Source 1 first rising edge and Source 2 last rising edge LRF Time between: Source 1 first rising edge and Source 2 last fall
MEASUREMENT Individual Mode Individual mode shows up to eight selected measurement items on bottom of the screen from any channel source. Add Measurement Item 1. Press the Measure key. Measure 2. Press Add Measurement from the bottom menu. 3. Choose either a V/I, Time or Delay measurement from the side menu.
GDS-3000 Series User Manual Choose a Source The channel source for measurement items can be set either before or when selecting a measurement item. 1. To set the source, press either the Source1 or Source2 key from the side menu and choose the source. Source 2 is only for delay measurements. Range Split Window Mode CH1, CH2, CH3, CH4 Individual mode can be used with the split window mode. Each individual measurement will be displayed in the split window that houses the source of the measurement.
MEASUREMENT Remove All Items Press Remove All to remove all the measurement items in full screen mode, or to remove all the measurement items for the active window in split screen mode. Gated mode Some automatic measurements can be limited to a “gated” area between cursors. Gating is useful for measuring a magnified waveform or when using a fast time base. The Gated mode has three possible configurations: Off (Full Record), Screen and Between Cursors. Set Gating Mode 1. Press the Measure key. Measure 2.
GDS-3000 Series User Manual Display All mode Display All mode shows and updates all items from Voltage and Time type measurements. View Measurement Results 1. Press the Measure key. Measure 2. Press Display All from the bottom menu. 3. Choose a channel (CH1, CH2, CH3, CH4) from the side menu to display auto measurement items. Note: only the channels that are activated are available. 4. The results of Voltage and Time type measurements appear on the display.
MEASUREMENT Delay Measurements Delay type measurement is not available in this mode as only one channel is used as the source. Use the Individual measurement mode (page 71) instead.
GDS-3000 Series User Manual Cursor Measurement Horizontal or vertical cursors are used to show the position and values of waveform measurements and math operation results. These results cover voltage, time, frequency and other math operations. When the cursors (horizontal, vertical or both) are activated, they will be shown on the main display unless turned off. (page 111). Use Horizontal Cursors Panel Operation/ 1. Press the Cursor key once. Range Cursor 2. Press H Cursor from the bottom menu. 3.
MEASUREMENT 5. Use the Variable knob to move the movable cursor(s) left or right. Left Right VARIABLE Example Horizontal cursors FFT Math FFT Math has different content. For FFT math details, see page 85.
GDS-3000 Series User Manual XY Mode XY mode cursors measure a number of X by Y measurements. Cursor Cursor Example 78 Time, rectangular, polar co-ordinates, product, ratio. Time, rectangular, polar co-ordinates, product, ratio.
MEASUREMENT Use Vertical Cursors Panel Operation/ 1. Press the Cursor key twice. Range Cursor 2. Press V Cursor from the bottom menu. 3. Press V Cursor repeatedly to toggle the cursor type. Range Upper cursor movable, lower cursor position fixed Lower cursor movable, upper cursor position fixed Upper and lower cursor movable together 4. The cursor position information appears on the top left hand side of the screen.
GDS-3000 Series User Manual Example Horizontal cursors Vertical cursors FFT Math The FFT Math has different content. For FFT math details, see page 85.
MEASUREMENT XY Mode XY mode cursors measure a number of X by Y measurements. Cursor Cursor Rectangular, polar co-ordinates, product, ratio. Rectangular, polar co-ordinates, product, ratio.
GDS-3000 Series User Manual Math Operation Overview Background Math operation runs addition, subtraction, multiplication, division or FFT using the input signals or reference waveforms (Ref1~4) and shows the result on the display. The resulted waveform characteristics can be measured using the cursors. Addition (+) Adds the amplitude of two signals. Source Subtraction (–) CH1~4, Ref1~4 Extracts the amplitude difference between two signals.
MEASUREMENT Hamming FFT Window Frequency resolution Good Amplitude resolution Not good Suitable for.... Rectangular FFT Window Frequency resolution Very good Amplitude resolution Bad Suitable for.... Blackman FFT Window Frequency measurement on periodic waveforms Single-shot phenomenon (this mode is the same as having no window at all) Frequency resolution Bad Amplitude resolution Very good Suitable for....
GDS-3000 Series User Manual 5. Select Source 2 from the side menu. CH1~4, Ref~4 Range 6. The math measurement result appears on the display. The vertical scale of the math waveform appears at the bottom of the screen. From left: Math function, source1, operator, source2, Unit/div Example Source 1 Source 2 Math Position and Unit To move the math waveform vertically, press the Position key from the side menu and use the variable knob to set the position.
MEASUREMENT FFT Panel Operation 1. Press the Math key. M 2. Press FFT from the bottom menu. 3. Select the Source from the side menu. Range CH1~4, Ref~4 4. Press the Vertical Units key from the side menu to select the vertical units used. Range Linear RMS, dBV RMS 5. Press the Window key from the side menu and select the window type. Range Hanning, Hamming, Rectangular, and Blackman. 6. The FFT result appears.
GDS-3000 Series User Manual Source Math Position and Unit To move the FFT waveform vertically, press Position and use the variable knob. Range –12.00 Div ~ +12.00 Div To select the vertical scale of FFT waveform, press Unit/div and use the variable knob. Range Clear FFT 86 2mV~1kV RMS, 1~20 dB To clear the FFT result from the display, press the Math key again.
MEASUREMENT Applications Overview Background The APP. function allows different applications to be run. Applications can be downloaded from the GW Instek website. Included Applications GO-NOGO The GO_NOGO application can be used to set threshold boundaries for input signals. GO-NOGO checks if a waveform fits inside a user-specified maximum and minimum amplitude boundary (template). Running Applications Background The APP.
GDS-3000 Series User Manual 3. Scroll through each Application using the Variable knob. 4. Select an application by pressing the Select key twice. Select ×2 Uninstalling Applications Background Any APP. function can be easily uninstalled using the Uninstall function. Panel Operation 1. Press the Test key. 2. Press APP. from the bottom menu.
MEASUREMENT 3. Scroll through each Application using the Variable knob. 4. When the desired application is highlighted, press Uninstall to begin the uninstallation. Press again to confirm.
GDS-3000 Series User Manual Using Go_NoGo Background The Go-NoGo test checks if a waveform fits inside a user-specified maximum and minimum boundary (boundary template). Boundary templates are automatically created from a source channel. Boundary tolerance and violation conditions can be set. Choose the Go_NoGo application from the APP. menu. See page 87. Go-NoGo Conditions Select the Go-NoGo conditions (When) and actions when a Go-NoGo condition has been met (Violating). 1.
MEASUREMENT Enters: Sets the NoGo condition to when the input signal stays within the limit boundary. 2. Press When again to change the menu to Violating. Use the Variable knob to choose the action for when a violation occurs. Violating Stop: The waveform will be frozen. Stop_Beep: The waveform will be frozen and a beep will be output. Continue: Ignore the violation. Continue_Beep: Output a beep, but continue to monitor the signal. Source 1.
GDS-3000 Series User Manual Maximum and Minimum 1. To set a maximum and minimum boundary, press Minimum Position from the bottom menu and use the Variable knob to select the absolute minimum position. Position Voltage division range 2. Press Minimum Position again to toggle the menu to Maximum Position. Choose the maximum position. Save Boundary Limits Position Voltage division range Note If a maximum and minimum boundary is set, the tolerance will be disabled. 1.
MEASUREMENT Start Go-NoGo Press Enable to start the Go-NoGo test. The Enable button will change to Disable. Pressing Disable will stop the Go-NoGo test and toggle the button back to Enable. Exit the Application To exit the application, press Break. Using the GoNoGo Output To output the Go-NoGo results to an external device, the Go-NoGo rear panel terminal (open collector) can be used. The Go-NoGo terminal will output a positive pulse each time a NoGo violation has occurred for a minimum of 10us.
GDS-3000 Series User Manual Circuit Diagram 220Ω B+ CMOS (Max 16V) Or TTL (Max 5V) Go-NoGo signal Go-NoGo BNC 94
MEASUREMENT Power Analysis Power analysis provides automatic measurement for a number of advanced measurement types such as power quality, harmonics, ripple and inrush current. The Power analysis software is an optional software module, for details please see page 192. Please see the Power Analysis manual for more details on using the power analysis software. Power Analysis Overview Power Quality Power quality measures the power of a signal using the measured voltage and current of a signal.
GDS-3000 Series User Manual Serial Bus The serial bus trigger and decode software includes support for 3 common serial interfaces, SPI (4 channel models only), UART and I2C. Each interface is fully configurable to accommodate a wide range of protocol variation. Each input can be displayed as binary or hexadecimal. An event table can also be created to aid in debugging. Note that the Serial bus trigger and decode software is an optional extra.
MEASUREMENT Threshold SCLK, SDA Configuration Addressing mode, Read/Write in address Trigger On SPI Start, Repeat Start, Stop, Missing Ack, Address, Data, Address/Data The SPI (Serial Interface Peripheral) bus is fully configurable to accommodate the wide variety of SPI interfaces. This bus is only available on 4 channel models.
GDS-3000 Series User Manual CONFIGURATION Acquisition ..................................................................... 100 Select Acquisition Mode.................................................... 100 Show Waveform in XY Mode.......................................... 102 Set the Sampling Mode...................................................... 104 Real time vs Equivalent Time Sampling Mode .............. 105 Display ...........................................................................
CONFIGURATION Trigger ........................................................................... 125 Trigger Type Overview ..................................................... 125 Trigger Parameter Overview ............................................ 127 Setup Holdoff Level .......................................................... 131 Setup Trigger Mode ........................................................... 132 Using the Edge Trigger .....................................................
GDS-3000 Series User Manual Acquisition The Acquisition process samples the analog input signals and converts them into digital format for internal processing. Select Acquisition Mode Background The acquisition mode determines how the samples are used to reconstruct a waveform. Sample This is the default acquisition mode. Every sample from each acquisition is used. Peak detect Only the minimum and maximum value pairs for each acquisition interval (bucket) are used.
CONFIGURATION 2. To set the Acquisition mode, press Mode on the bottom menu. 3. Select an acquisition mode from the side menu.
GDS-3000 Series User Manual Show Waveform in XY Mode Background The XY mode maps the voltage of channel 1 to the voltage of channel 2. In 4 channel models, the voltage of channel 3 is mapped to the voltage of channel 4. This mode is useful for observing the phase relationship between waveforms. Reference waveforms can also be used in XY mode. Ref1 is mapped to Ref2 and Ref3 is mapped to Ref4. Using the reference waveforms is the same as using the channel input waveforms. Connection 1.
CONFIGURATION X-Y mode is split into two windows. The top window shows the signals over the full time range. The bottom window shows XY mode. Up To move the X Y waveform position, use the vertical position knob: Channel 1 knob moves the X Y waveform horizontally, Channel 2 knob moves the X Y waveform vertically. Similarly, the X2 and Y2 axis can be positioned using the channel 3 and channel 4 vertical position knobs.
GDS-3000 Series User Manual Set the Sampling Mode Background The GDS-3000 has two types of sampling modes: ET (Equivalent Time) and Sin(x)/x interpolation. Equivalent time sampling is able to achieve a sample rate of 100GSa/s when sampling periodic waveforms. Sin(x)/x interpolation uses a sinc interpolation formula to reconstruct a continuous signal between sampled points. Panel Operation 1. Press the Acquire key. Acquire 2.
CONFIGURATION Real Time vs Equivalent Time Sampling Mode Background The sampling mode on the GDS-3000 can be switched between two sampling modes: Real-time and Equivalent-time. The number of active channels in operation will determine the sampling rate of the DSO. The sampling rate and mode depends on the number of active channels and whether the oscilloscope model has 2 or 4 channels. Parameter Real-time sampling One sample of data is used to reconstruct a single waveform.
GDS-3000 Series User Manual Display The Display menu defines how the waveforms and parameters appear on the main LCD display. Display Waveform as Dots or Vectors Background When the waveform is displayed on screen, it can be displayed as dots or vectors. Panel Operation 1. Press the Display menu key. Display 2. Press Dot Vector to toggle between Dot and Vector mode. Range Example: 106 Dots Only the sampled dots are displayed. Vectors Both the sampled dots and the connecting line are displayed.
CONFIGURATION Set the Level of Persistence Background The persistence function allows the GDS-3000 to mimic the trace of a traditional analog oscilloscope. A waveform trace can be configured to “persist” for designated amount of time. Panel Operation 1. Press the Display menu key. Display 2. To set the persistence time, press the Persistence menu button on the bottom bezel. 3. Use the variable knob to select a persistence time.
GDS-3000 Series User Manual Waveform Intensity 3. To set the waveform intensity, press Waveform Intensity and edit the intensity. Range Graticule Intensity 4. To set the graticule intensity, press Graticule Intensity from the side menu and edit the intensity value.
CONFIGURATION Set the Waveform Intensity Type Background The intensity gradient of a signal can be set to grayscale or color. If intensity is set to color, the intensity gradient is analogous to a thermal color gradient where high intensity areas are colored red and low intensity areas are colored blue. Panel Operation 1. Press the Display menu key. Display 2. Press Waveform from the bottom menu to toggle the intensity type.
GDS-3000 Series User Manual Select Display Graticule Panel Operation 1. Press the Display menu key. Display 2. Press Graticule from the bottom menu. 3. From the side menu choose the graticule display type. Full: Shows the full grid; X and Y axis for each division. Grid: Show the full grid without the X and Y axis. Cross Hair: Shows only the center X and Y frame. Frame: Shows only the outer frame.
CONFIGURATION Freeze the Waveform (Run/Stop) For more details about Run/Stop mode, see page 59. Panel Operation 1. Press the Run/Stop key. To unfreeze the waveform, press the Run/Stop key again. Run/Stop 2. The waveform and the trigger freezes. The trigger indicator on the top right of the display shows Stop. Turn Off Menu Panel Operation 1. Press the Menu Off key below the side menu keys to reduce a menu. The menu key needs to be pressed each time to reduce one menu. See page 32 for more information.
GDS-3000 Series User Manual Horizontal View This section describes how to set the horizontal scale, position, and waveform display mode. Move Waveform Position Horizontally Panel Operation The horizontal position knob moves the waveform left/right. As the waveform moves, a position indicator on the on the top of the display indicates the horizontal position of the waveform in memory. Reset Horizontal 1.
CONFIGURATION Select Horizontal Scale TIME/DIV Select Horizontal To select the timebase (scale), turn the Scale TIME/DIV knob; left (slow) or right (fast). Down Up Range 1ns/div ~ 100s/div, 1-2-5 increment (1-2.5-5 for GDS-350X) The timebase indicator updates as the TIME/DIV is adjusted. Horizontal position Time base Run Mode In Run mode, the memory bar and waveform size keep their proportion. When the time base becomes slower, roll mode is activated (if trigger is set to Auto).
GDS-3000 Series User Manual Select Waveform Update Mode Background Normal Roll Mode The display update mode is switched automatically or manually according to the timebase and trigger. Updates the whole displayed waveform at once. Automatically selected when the timebase (sampling rate) is fast. Timebase ≤50ms/div (≥50kSa/s) Trigger all modes Updates and moves the waveform gradually from the right side of the display to the left. Automatically selected when the timebase (sampling rate) is slow.
CONFIGURATION Zoom Waveform Horizontally Background When in Zoom mode the screen is split into 2 sections. The top of the display shows the full record length, with the bottom of the screen showing the normal view. Panel Operation 1. Press the Zoom key. Zoom 2. The Zoom mode screen appears. Zoom window Zoom time base Horizontal Navigation Horizontal position To scroll the waveform left or right, use the Horizontal Position knob.
GDS-3000 Series User Manual The zoom time base (Z) at the bottom of the screen will change accordingly. Move the Zoom Window Use the Variable knob to pan the zoom window horizontally. Left Right VARIABLE To reset the Zoom position, press Reset Zoom Position to 0s. Scroll Sensitivity To alter the scrolling sensitivity of the Zoom Window, press the key to toggle the scrolling sensitivity. Sensitivity Fine, Coarse Exit 116 To go back to the original view, press the Zoom key again.
CONFIGURATION Vertical View (Channel) This section describes how to set the vertical scale, position, and coupling mode. Move Waveform Position Vertically Up Panel Operation 1. To move the waveform up or down, turn the vertical position knob for each channel. POSITION Down 2. As the waveform moves, the vertical position of the cursor appears at the bottom half of the display. View or Reset Vertical Position 1. Press a channel key. The vertical position is shown in the Position / Set to 0 soft key.
GDS-3000 Series User Manual The vertical scale indicator on the bottom left of the display changes accordingly for the specific channel. Range Stop Mode 2mV/div ~ 1V/div (50Ω/75Ω), 2mV/div ~ 5V/div (1MΩ). 1-2-5 increments In Stop mode, the vertical scale setting can be changed. Select Coupling Mode Panel Operation 1. Press a channel key. CH1 2. Press Coupling repeatedly to toggle the coupling mode for the chosen channel. Range DC coupling mode.
CONFIGURATION Example Observing the AC portion of the waveform using AC coupling DC coupling AC coupling Set the Impedance Panel Operation 1. Press the Channel key. CH1 2. Press Impedance repeatedly to toggle between the impedance settings. Impedance 1MΩ, 75Ω, 50Ω Invert Waveform Vertically Panel Operation 1. Press the Channel key. CH1 2. Repeatedly press Invert to toggle Invert On or Off.
GDS-3000 Series User Manual Limit Bandwidth Background Bandwidth limitation puts the input signal into a selected bandwidth filter. This function is useful for cutting out high frequency noise to see a clear waveform shape. The bandwidth filters available are dependent on the bandwidth of the oscilloscope model. Panel Operation 1. Press the Channel key. CH1 2. Press Bandwidth from the bottom menu. 3. Choose a bandwidth* from the side menu (depending on the bandwidth of the oscilloscope).
CONFIGURATION Example BW Full BW Limit 20MHz Expand by Ground/Center Background When the voltage scale is changed, the Expand function designates whether the signal expands from the center of the signal or from the signal ground level. Expand by center can be used to easily see if a signal has a voltage bias. Expand by ground is the default setting. Panel Operation 1. Press a channel key. CH1 2. Press Expand repeatedly to toggle between expand By Ground and Center.
GDS-3000 Series User Manual Example If the vertical scale is changed when the Expand function is set to ground, the signal will expand from the ground level*. The ground level does not change when the vertical scale is changed. If the vertical scale is changed when the Expand function is set to center, the signal will expand from the center of the signal. The ground level will suit to match the signal position. *Or from the upper or lower edge of the screen if the ground level is off screen.
CONFIGURATION Select Probe Attenuation Level Background A signal probe has an attenuation switch to lower the original DUT signal level to the oscilloscope input range, if necessary. The probe attenuation selection adjusts the vertical scale so that the voltage level on the display reflects the real value on a DUT. Panel Operation 1. Press the Channel key. CH1 2. Press Probe from the bottom menu. 3. Press Attenuation on the side menu and use the variable knob to set the attenuation.
GDS-3000 Series User Manual Set the Deskew Background The deskew function is used to compensate for the propagation delay between the oscilloscope and the probe. Panel Operation 1. Press one of the Channel keys. CH1 2. Press Probe from the bottom menu. 3. Press Deskew on the side menu and use the variable knob to set the deskew time. Alternatively, press Set to 0s to reset the deskew time. Range -50ns~50ns, 10ps increments 4. Repeat the procedure for another channel if necessary.
CONFIGURATION Trigger The trigger configures the conditions for when the GDS-3000 captures a waveform. Trigger Type Overview Edge The edge trigger is the simplest trigger type. An edge trigger triggers when the signal crosses an amplitude threshold with either a positive or negative slope. Rising edge trigger Falling edge trigger Delay The Delay trigger works in tandem with the edge trigger, by waiting for a specified time or number of events before the edge trigger starts.
GDS-3000 Series User Manual Delay trigger example (by time) A C D B Pulse Width A Ext. trigger input B Source C Delay time length D First triggering point Triggers when the pulse width of the signal is less than, equal, not equal or greater than a specified pulse width. Pulse width Video Extracts a sync pulse from a video format signal, and triggers on a specific line or field. Pulse and Runt Triggers on a “runt”.
CONFIGURATION Trigger Parameter Overview All the following parameters are common for all the trigger types unless stated otherwise. Trigger Source Trigger Mode CH1 ~ 4 Channel 1 ~ 4 input signals EXT External trigger input signal AC Line AC mains signal Alternate Alternate between channel sources for the trigger source. EXT Probe Probe trigger source. Set the probe as either current or voltage.
GDS-3000 Series User Manual Coupling (Edge, Delay) DC DC coupling. AC AC coupling. Blocks DC components from the trigger circuits. HF reject High frequency filter above 50kHz LF reject Low frequency filter below 50kHz Reject noise DC coupling with low sensitivity to reject noise. Trigger on a rising edge. Slope (Edge, Delay, Rise & Fall) Trigger on a falling edge. Don’t care.
CONFIGURATION Delay (Delay) When (Pulse Width) Threshold (Pulse Width) Time Sets the delay time (10ns ~ 10s) between the trigger event and the real trigger timing. Event Sets the number of events (1 ~ 65535) passed after the trigger event, until the real trigger timing. Set to Minimum Sets the source trigger to the minimum time. Sets the pulse width (4ns ~ 10s) and the triggering condition.
GDS-3000 Series User Manual Trigger On (Video) Selects the trigger point in the video signal. Field 1 or 2 or all. Line 1~263 for NTSC, 1~313 for PAL/SECAM, 1~ 525/625 for EDTV, 1~562/750/1125 for HDTV or all. Sets the upper threshold limit. Threshold (Pulse Runt) Sets the lower threshold limit. Set to TTL 1.4V Set to ECL -1.3V Sets the High threshold. Threshold (Rise & Fall) 130 Sets the Low threshold. Set to TTL 1.4V Set to ECL -1.
CONFIGURATION Setup Holdoff Level Background The holdoff function defines the waiting period before the GDS-3000 starts triggering again after a trigger point. The holdoff function ensures a stable display if there are a number points in a periodic waveform that can be triggered. Holdoff applies to all the triggering types. Trigger point Holdoff time Panel Operation 1. Press the trigger Menu key. Menu 2. To set the Holdoff time, press the Holdoff (or Mode/Holdoff) menu button on the bottom bezel. 3.
GDS-3000 Series User Manual Setup Trigger Mode Background The trigger mode can be set to Normal or Auto (untriggered roll). The triggering mode applies to all the trigger types. See page 114. Panel Operation 1. Press the Trigger menu key. Menu 2. Press Mode from the bottom menu to change the triggering mode. 3. Use the side panel to select Auto or Normal triggering modes. Range Auto, Normal Using the Edge Trigger Panel Operation 1. Press the Trigger menu key. Menu 2.
CONFIGURATION 5. Use the side menu to select the trigger source type. Range Channel 1 ~ 4 (Alternate On/Off), Line, EXT (Ext Probe: Volt/Current, Attenuation: 1mX~1kX ), AC Line 6. Press Coupling from the bottom bezel menu to select the trigger coupling or frequency filter settings. 7. Choose the coupling from the side menu. Range DC, AC 8. Press Reject to toggle the rejection filter from the side menu. Range HF Reject, LF Reject, Off 9. Toggle Noise Rejection On or Off from the side menu.
GDS-3000 Series User Manual 12. Set the external trigger level using the side menu. Range 00.0V~ 5 screen divisions Set to TTL 1.4V Set to ECL -1.3V Set to 50% Using Advanced Delay Trigger Background The EXT trigger source is always used as the delay triggering source. Panel Operation 1. Press the trigger Menu key. Menu 2. Press Type from the lower bezel menu. 3. Select Delay from the side menu. The delay + edge trigger indicator appears at the bottom of the display.
CONFIGURATION 5. To Delay by Time, press Time from the side menu and set the delay time. Range 10ns ~ 10s (by time) Set to minimum 6. To Delay by Event, press Event from the side menu and set the number of events. Range 1 ~ 65535 events Set to Minimum Using Pulse Width Trigger Panel Operation 1. Press the trigger Menu key. Menu 2. Press the Type key from the lower bezel menu. 3. Select Pulse Width from the side menu. The pulse width trigger indicator appears at the bottom of the display.
GDS-3000 Series User Manual 5. Use the side menu to select the pulse width trigger source. Range Channel 1 ~ 4 (Alternate On/Off), Line, EXT (Ext Probe: Volt/Current, Attenuation: 1mX~1kX ), AC Line 6. Press Polarity to toggle the polarity type. Range Positive (high to low transition) Negative (low to high transition) 7. Press When from the lower bezel. 8. Then use the side menu to select the pulse width condition and width. Condition > , < , = , ≠ Width 4ns ~ 10s 9.
CONFIGURATION Using Video Trigger Panel Operation 1. Press the trigger Menu key. Menu 2. Press the Type key from the lower bezel menu. 3. Select Video from the side menu. The video trigger indicator appears at the bottom of the display. From left: channel, video standard, field, line 4. Press Source from the lower bezel. 5. Use the side menu to select the video trigger source. Range Channel 1 ~ 4 6. Press Standard on the bottom bezel. 7. Use the side menu to select the video standard.
GDS-3000 Series User Manual 9. Use the side menu to select the field and line. Field 1, 2, All Video line NTSC: 1 ~ 262 (Even), 1 ~ 263 (Odd) PAL/SECAM: 1 ~ 312 (Even), 1 ~ 313 (Odd), EDTV(480P): 1~ 525, EDTV(576P): 1~ 625 HDTV(720P): 1~ 750, HDTV (1080i): 1 ~ 562 (even), 1~563 (odd), HDTV (1080P): 1~1125, All 10. Press Polarity to toggle the polarity type. Range positive, negative Pulse Runt trigger Panel Operation 1. Press the trigger Menu key. 2. Press the Type key from the lower bezel menu. 3.
CONFIGURATION 4. Press Source from the lower menu. 5. Use the side menu to select a source. Range Channel 1 ~ 4 6. Press Polarity to toggle the polarity. Range Rising edge, falling edge, either. 7. Press When from the lower menu. 8. Then use the side menu to select the condition and width. Condition > , < , = , ≠ Width 4ns ~ 10s 9. Press Threshold from the lower bezel to edit the threshold for each input source. 10. Use the side menu to set the upper threshold. Range -XXV~XXV Set to TTL 1.
GDS-3000 Series User Manual 11. Use the side menu to set the lower threshold. Range -XXV~XXV Set to TTL 1.4V Set to ECL -1.3V Using Rise and Fall Trigger Panel Operation 1. Press the trigger Menu key. Menu 2. Press the Type key from the lower bezel menu. 3. Select Others à Rise and Fall from the side menu. The Rise and Fall indicator appears at the bottom of the display. From left: rise and fall, source, high/low threshold, threshold level 4. Press Source from the lower menu. 5.
CONFIGURATION 6. Press Slope from the bottom menu to toggle the slope. Range Rising edge, falling edge, either 7. Press When from the lower menu. 8. Then use the side menu to select the logic conditions and true or false status. Condition > , < , = , ≠ Width 4ns ~ 10s 9. Press Threshold from the lower bezel to edit the threshold for each input source. 10. Use the side menu to set the threshold for the current input. Range High: -XXV~XV Low: -XXV~XXV Set to TTL 1.4V Set to ECT -1.
GDS-3000 Series User Manual System Info / Language / Clock This section describes how to set the interface, beeper, language, time/date, and probe compensation signal. Select Menu Language Parameter Panel Operation The following is a list of language available by default. Language selection may differ according to the region to which the GDS-3000 is shipped. English Chinese (traditional) Chinese (simplified) Korean Japanese Polish French Russian German 1.
CONFIGURATION 2. Press System from the lower menu. 3. Press System Info from the side menu. A display panel will appear showing: Manufacturer name Model name Serial number Firmware version Manufacturer URL App download location Erase Memory Background The Erase Memory function will erase all internal waveforms, setup files and labels from internal memory. Erased Items Waveform 1~20, Setting memory 1~20, Reference 1~4, Labels Panel Operation 1. Press the Utility key.
GDS-3000 Series User Manual 2. Press System from the lower menu. 3. Press Erase Memory from the side menu. A message will prompt you to press Erase Memory again to confirm the process. 4. Press Erase Memory. Set the Buzzer Volume Panel Operation 1. Press the Utility key. Utility 2. Press System from the lower menu. 3. Press the buzzer icon on the side panel. Use the variable knob to set the volume. Set Date and Time Panel Operation/ 1. Press the Utility key.
CONFIGURATION 2. Press Date & Time on the lower menu. 3. Set the Year, Month, Day, Hour and Minute from the side menu. Year 2000 ~ 2037 Month 1 ~ 12 Day 1 ~ 31 Hour 1~23 Minute 0~59 4. Press Save Now from the side menu to save the date and time. 5. Make sure the date/time setting is correctly reflected at the top of the display.
GDS-3000 Series User Manual SAVE/RECALL File Format/Utility .......................................................... 147 Image File Format.............................................................. 147 Waveform File Format ...................................................... 147 Spreadsheet File Format ................................................... 148 Setup File Format............................................................... 149 Create/Edit file labels .................................
SAVE/RECALL File Format/Utility Image File Format Format DSxxxx.bmp or DSxxxx.png Contents The current display image is 800 by 600 pixels. The background color can be inverted (Ink saver function). Each image file is numbered consecutively from DS0001 to DS9999. Waveform File Format Format DSxxx.lsf, CH1~CH4.lsf The LSF file format efficiently stores waveforms. This is the file format that is used for storing and recalling waveforms for measurement with the GDS-3000 series osciloscopes.
GDS-3000 Series User Manual Ref 1~4 Contents: Waveform Data Reference waveforms stored in the internal memory, separate from W1 ~ W20. Reference waveforms (Ref 1 ~ 4) can be displayed directly onto the display with amplitude and frequency information. Ref 1~4 are useful for reference purposes. Other waveforms ( LSF and W1~20) must be recalled to R1~4 before being displayed. The waveform data can be used for detailed analysis.
SAVE/RECALL Horizontal scale Horizontal scale Horizontal position Sampling period Time (of points) Channel Setup File Format Format DSxxxx.set (proprietary format) The setup file saves or recalls the following settings.
GDS-3000 Series User Manual Trigger Utility Save/ recall 150 Type Noise Rejection Source Slope Coupling Level Alternate Mode Rejection Holdoff Language Ink Saver Print key Image file format Data file format
SAVE/RECALL Create/Edit file labels Format Reference files and Setup files stored in internal memory can have individual labels set. The labels are used on the reference waveform and setup file icons. Panel Operation 1. Press the Save/Recall key from the front panel. Save/Recall 2. Press Edit File Label from the bottom menu. 3. Press Label For to choose a Reference or Setup file. Label For Ref1~4, Set1~20 4. To choose a preset label, Press User Preset from the side menu and choose a label.
GDS-3000 Series User Manual 2. The Edit Label window appears. 3. Use the Variable knob to highlight a character. VARIABLE Press Enter Character to select a number or letter. Press Back Space to delete a character. Press Editing Completed to create the new label and return to the previous menu. Cancel 152 Press Cancel to cancel the operation and return to the previous menu.
SAVE/RECALL Save File Type/Source/Destination Item Source Panel Setup (DSxxxx.set) Front panel settings Waveform Data (DSxxxx.csv) (DSxxxx.lsf) (CH1~CH4.lsf, Ref1~Ref4.lsf, Math.lsf)* ALLxxxx.csv Channel 1 ~ 4 Math operation result Reference waveform Ref1~4 All displayed waveforms Display Image (DSxxxx.bmp) (DSxxxx.
GDS-3000 Series User Manual Save Image Panel Operation Front 1. To save to USB, connect a USB drive to the front or rear panel USB port. If a USB drive is not connected, images will be saved to the internal memory. Note: Only one host connection, front or rear, is allowed at a time. 2. Press the Save/Recall key from the front panel. Rear Host Save/Recall 3. Pres Save Image from the bottom menu. 4. Press File Format to choose PNG or BMP file types. Range DSxxxx.bmp, DSxxxx.png 5.
SAVE/RECALL 6. Press Save Now from the side menu to save the display as an image file. Note USB File Utility The file will not be saved if the power is turned Off or the USB drive is taken out before the message ends. To edit the USB flash drive contents (create/ delete/ rename files and folders) or to edit the default file path, press File Utilities from the side menu. See page 166 for details. Save Image - Print/Save Key Background The Print/Save key can be assigned to Print or to Save.
GDS-3000 Series User Manual 4. On the side menu, press Function repeatedly to select Save. The Save led on the screen bezel will be lit when the printout function is set to Save. 5. Press the Print/Save key to save to USB. Ink Saver Save To invert the color for the saved or printed display image, press Ink Saver repeatedly to toggle Ink Saver On or Off from the side menu.
SAVE/RECALL Save Waveform Panel Operation Front 1. (For saving to an external USB flash drive) Connect the drive to the front or rear panel USB port. Note: Only one host connection, front or rear, is allowed at a time. 2. Press the Save/Recall key from the front panel. Rear Host Save/Recall 3. Press Save Waveform from the bottom menu. 4. Choose the From waveform on the side menu. Source CH1~4, Math, Ref1~4, All Displayed 5. Press To (internal memory) or To File and choose a destination to save.
GDS-3000 Series User Manual Note The file will not be saved if the power is turned Off or the USB drive is taken out before the message ends. USB File Utility To edit USB flash drive contents (create/ delete/ rename files and folders), press File Utilities. For details, see page 166. PC Software (FreeWave) Saving waveforms can also be accomplished using FreeWave, downloadable from GWInstek website. Save Setup Panel Operation Front 1.
SAVE/RECALL 4. Press To (internal memory) or To File and choose a destination to save. To Set1~Set20 To File DSxxxx.set 5. Press Save Now to confirm saving. When completed, a message appears at the bottom of the display. Note The file will not be saved if the power is turned Off or the USB drive is taken out before the message ends. USB File Utility To edit USB flash drive contents (create/ delete/ rename files and folders) or to set the file path, press File Utilities. For details, see 166.
GDS-3000 Series User Manual Recall File Type/Source/Destination Item Source Default Panel Setup Factory installed setting Current front panel Reference Waveform Internal memory: Ref1~4 Current front panel Panel Setup (DSxxxx.set) Internal memory: S1 ~ S20 Current front panel File system: Disk, USB Internal memory: Wave 1 ~ Wave20 Reference waveform 1~4 File system: Disk, USB Waveform Data (DSxxxx.lsf) (CH1~CH4.lsf, Ref1~Ref4.lsf, Math.
SAVE/RECALL Acquire Display Mode: Sample XY: OFF Sample mode: Sinc Sample rate: 250MSPS (200MSPS GDS350X) Mode: Vector Persistence: Auto Waveform intensity: 50% Graticule intensity: 50% Waveform visuals: Gray Graticule: full Channel Scale: 100mV/Div CH1: On Coupling: DC Impedance: 1MΩ Invert: Off Bandwidth: full Expand: By ground Position: 0.
GDS-3000 Series User Manual Utility Language: English Print key: Save Ink Saver: Off Save Recall Image file format: Bmp Data file format: LSF Recall Waveform Panel Operation Front 1. (For recalling from an external USB flash drive) Connect the drive to the front or rear panel USB port. Note: Only one host connection, front or rear, is allowed at a time. Rear Host 2. The waveform must be stored in advance. See page 155 for waveform store details. 3. Press the Save/Recall key. Save/Recall 4.
SAVE/RECALL 6. Press To and select the reference waveform to recall to. To Ref1~4 7. Press Recall Now to recall the waveform. USB File Utility To edit USB flash drive contents (create/ delete/ rename files and folders) or to set the file path, press File Utilities. For details, see page 166. Recall Setup Panel Operation Front 1. (For recalling from an external USB flash drive) Connect the drive to the front or rear panel USB port. Note: Only one host connection, front or rear, is allowed at a time. 2.
GDS-3000 Series User Manual From File DSxxxx.set (USB, Disk)* * Only files in the current file path will be available. 5. Press Recall Now to confirm recalling. When completed, a message appears at the bottom of the display. Note The file will not be recalled if the power is turned Off or the USB drive is taken out before the message ends. USB File Utility To edit USB flash drive contents (create/ delete/ rename files and folders) or to set the file path, press File Utilities. For details, see page 166.
SAVE/RECALL Reference Waveforms Recall and Display Reference Waveforms Panel Operation A reference waveform must be stored in advance. See page 155 to store waveforms as reference waveforms. 1. Press the REF key on the front panel. R 2. Pressing R1~R4 repeatedly will toggle the corresponding reference waveform OFF/ON. Turning R1~R4 ON will open the corresponding reference menu. 3.
GDS-3000 Series User Manual Vertical Navigation Press Vertical repeatedly from the side menu to choose to edit the vertical position or Volts/Div. Use the Variable knob to edit the values. Horizontal Navigation Press Horizontal repeatedly from the side menu to choose to edit the Time/Div or the horizontal position. Use the Variable knob to edit the value. View Reference Pressing Ref Details will display the Waveform Details reference waveform details.
FILE UTILITIES FILE UTILITIES The file utilities are used each time files need to be saved to internal or external memory. The file utilities can create directories, delete directories and rename files. BMP and PNG image files can be previewed in the file system. The File Utilities menu also sets the file path for saving and recalling files from the Save/Recall menu. File Navigation ................................................................... 168 Create Folder .......................................
GDS-3000 Series User Manual File Navigation The File Utilities menu can be used to choose files or to set the file path for saving/recalling files. File System File path File cursor Panel Operation Drive space File attributes 1. Press the Utility key. Utility 2. Press File Utilities from the bottom menu. 3. The file system appears. 4. Use the Variable knob to move the file cursor up and down. Use the Select key to choose a file or directory or to set the file path.
FILE UTILITIES The file path can be set to internal memory or to a directory on a USB memory stick. Note Select Selecting a waveform file will cause that file to be recalled to the currently configured reference waveform. Create Folder Panel Operation 1. Press the Utility key. Utility 2. Press File Utilities from the bottom menu. 3. Use the variable knob and select key to navigate the file system. Create Folder 4. Press Create Folder to make a new directory at the selected location.
GDS-3000 Series User Manual 5. Use the Variable knob to highlight a character. VARIABLE Press Enter Character to select a number or letter. Press Back Space to delete a character. 6. Press Editing completed to create the folder name. Cancel Press Cancel to cancel the operation. Rename File Panel Operation 170 1. Press the Utility key. 2. Press File Utilities from the bottom menu. 3. Use the variable knob and select key to choose a file to rename.
FILE UTILITIES 4. Press Rename when a file is chosen. 5. Use the Variable knob to highlight a character. VARIABLE Press Enter Character to select a number or letter. Press Back Space to delete a character. 6. Press Editing completed to create the folder or file name.
GDS-3000 Series User Manual Delete File Panel Operation 172 1. Press the Utility key. 2. Press File Utilities from the bottom menu. 3. Use the variable knob and select key to navigate the file system to choose a file. 4. Press Delete to delete the selected file. 5. Press Delete again to confirm the deletion.
FILE UTILITIES Copy File to USB Panel Operation Panel Operation 1. Connect a USB drive to the front or rear panel USB port. Note: Only one host connection, front or rear, is allowed at a time. Front Rear Host 2. Press the Utility key. 3. Press File Utilities from the bottom menu. 4. Use the variable knob and select key to navigate the file system to choose a file from internal memory. 5. Press Copy to USB to copy the selected file to the USB drive.
GDS-3000 Series User Manual PRINT OUT Screen images can be printed to some PictBridge compatible printers using the USB device port. The GDS-3000 has a dedicated Print/Save key for quick and easy printing. To reduce the amount of printer ink used for each print, images can be printed using the Ink Saver function. Screen images can also be printed using the remote control software, FreeWave, downloadable from the GWInstek website. Printer I/O Configuration Panel Operation 1.
PRINT OUT Print Output Ensure the USB port has been configured to Printer before trying to print, see page 174. Panel Operation 1. Press the Utility key. Utility 2. Press Printout from the bottom menu. 3. On the side menu, press Function repeatedly to select Print. 4. The Print led on the screen bezel will be lit when the printout Function is set to Print. Print Save 5. Press the Print/Save key located on the screen bezel. The display image is printed out.
GDS-3000 Series User Manual Ink Saver To have a white background on the saved or printed display image, press Ink Saver repeatedly to toggle Ink Saver On or Off from the side menu.
REMOTE CONTROL CONFIG REMOTE CONTROL CONFIG This chapter describes basic configuration for remote control. For a command list, refer to the programming manual downloadable from GWInstek website, www.gwinstek.com Interface Configuration .................................................. 178 Configure USB Interface................................................... 178 Configure RS-232C Interface ........................................... 179 Configure the Ethernet Interface...............................
GDS-3000 Series User Manual Interface Configuration Configure USB Interface USB Configuration Panel Operation PC side connector Type A, host GDS-3000 side connector Type B, slave Speed 1.1/2.0 (high speed) USB Class CDC (communications device class) 1. Press the Utility key. Utility 2. Press I/O from the bottom menu. 3. Press USB Device Port from the side menu. 4. Press Computer from the side menu. 5. Connect the USB cable to the rear panel slave port. 6.
REMOTE CONTROL CONFIG Configure RS-232C Interface RS-232C Configuration Panel Operation Connector DB-9, Male Baud rate 2400, 4800, 9600, 19200, 38400, 57600, 115200 Parity None, Odd, Even Data bit 8 (fixed) Stop bit 1, 2 1. Press the Utility key. Utility 2. Press I/O from the bottom menu. 3. Press RS-232C from the side menu. 4. Use the side menu to set the Baud Rate. Baud Rate 2400, 4800, 9600, 19200, 38400, 57600, 115200 5. Press Stop Bit to toggle the number of stop bits.
GDS-3000 Series User Manual 7. Press Save Now to save the settings. 8. Connect the RS-232C cable to the rear panel port: DB-9 male connector. For a functionality check, see page 184. Pin Assignment 12345 2: RxD (Receive data) 3: TxD (Transmit data) 6789 PC Connection 5: GND 4, 6 ~ 9: No connection Use the Null Modem connection as in the below diagram.
REMOTE CONTROL CONFIG Background The Ethernet interface is used for remote control over a network. Panel Operation 1. Press the Utility key. Utility 2. Press I/O from the bottom menu. 3. Press Ethernet from the side menu. 4. Set DHCP/BOOTP to On or Off from the side menu. Note IP addresses will automatically be assigned with DHCP/BOOTP set to on. For Static IP Addresses, DHCP/BOOTP should be set to off.
GDS-3000 Series User Manual 5. Use the Up and Down arrows on the side menu to navigate each Ethernet configuration item. Items MAC Address, Instrument Name, User Password, Instrument IP Address, Domain Name, DNS IP Address, Gateway IP Address, Subnet Mask Note: HTTP Port is fixed at 80. 6. Use the Variable knob to highlight a character and use the Select key to choose a character. Press Backspace to delete a character. 7. Connect the Ethernet cable to the rear panel of the GDS-3000.
REMOTE CONTROL CONFIG Configure GPIB Interface To use GPIB, the optional GPIB to USB (GUG-001) adapter must be used. The GPIB address can be configured for the GUG-001 from the utility menu. See the GUG-001 user manual for more information. Configure GPIB 1. Insert the GUG-001 USB cable into the rear panel USB device port. 2. Press the Utility key. Utility 3. Press I/O from the bottom menu. 4. Press USB Device Port from the side menu. 5. Press GPIB from the side menu. 6.
GDS-3000 Series User Manual USB/RS-232C Remote Control Software Terminal Application (USB/RS-232C) Invoke the terminal application such as telnet. For RS-232C, set the COM port, baud rate, stop bit, data bit, and parity accordingly. To check the COM port No, see the Device Manager in the PC. For WinXP, Control panel → System → Hardware tab. Functionality Check Key in this query command via the terminal.
REMOTE CONTROL CONFIG System Information: Network Configuration Manufacturer IP Address Serial Number Subset Mask Firmware version DNS Hostname MAC Adress Domain name DHCP State Hostname Gateway Domain name DNS IP Address DHCP State Subnet mask 185
GDS-3000 Series User Manual Current display image Get Display Image Panel Operation 1. Configure the Ethernet interface. Page 180 2. Enter the IP address of the GDS-3000 unit into the address bar of a web browser. For example: http://172.16.20.255 3. The GDS-3000 web browser welcome page appears.
MAINTENANCE MAINTENANCE Three types of maintenance operations are available: signal path compensation, vertical accuracy calibration and probe compensation. Run these operations when using the GDS-3000 in a new environment. The maintenance chapter also includes instruction on how to install and uninstall optional software applications. How to use SPC function ................................................. 188 Vertical Accuracy Calibration ...........................................
GDS-3000 Series User Manual How to use SPC function Background Signal Path Compensation (SPC) is used to compensate the internal signal path due to ambient temperature. SPC is able to optimize the accuracy of the oscilloscope with respect to the ambient temperature. Panel Operation 1. Press the Utility key. Utility 2. Press System from the bottom menu. 3. Press SPC from the side menu. A message showing a brief introduction to SPC appears on the screen.
MAINTENANCE Vertical Accuracy Calibration Panel Operation 1. Press the Utility key. Utility 2. Press System from the bottom menu. 3. Press more 1 of 2 from the side menu. 4. Press Self Cal on the side menu. 5. Press Vertical on the side menu. 6. A message appears to “Set CAL to CH1, then press F1”. 7. Connect the calibration signal from the rear panel to the Channel1 input with a BNC cable.
GDS-3000 Series User Manual Note In order to avoid noise interference, it is best if you connect the BNC input channels (front) & the CAL BNC (rear) with an isolated BNC-to-BNC coaxial cable such as the RG400 BNC test lead (Part No:4241-10200201) or a normal 5D2V BNC-to-BNC coaxial cable when performing the Vertical Accuracy Calibration. 8. Press Vertical again after connecting CAL to the channel 1 input. The calibration for Channel1 starts and ends automatically, in less than 5 minutes.
MAINTENANCE Probe Compensation Panel Operation 1. Connect the probe between the Channel1 input and the probe compensation output (2Vp-p, 1kHz square wave) on the front panel. Set the probe attenuation to x10 (GDP probes are fixed at x10).
GDS-3000 Series User Manual 8. Turn the adjustment point on the probe to make the waveform as square as possible. Under Compensation Normal Over Compensation Activating Optional Software Background The GDS-3000 has power analysis software (page 95), serial bus decoding software (page 96) and other GW Instek applications as optional extras. GW Instek supplies both free-of-charge and paidfor applications. Note: An activation key is required to activate each optional software application.
MAINTENANCE Uninstalling Optional Software Background Optional software packages such as the power analysis software or the serial bus decode software can be uninstalled from the system menu. Panel Operation 1. Press the Utility key. Utility 2. Press System from the bottom menu. 3. Press more 1 of 2 from the side menu. 4. Press Option Uninstall on the side menu. 5. Select the optional software packages that you wish to uninstall from the side menu.
GDS-3000 Series User Manual FAQ • I connected the signal but it does not appear on the display. • I want to remove the (Measurement result / FFT result / Help contents) from the display. • The waveform does not update (frozen). • The probe waveform is distorted. • Autoset does not catch the signal well. • I can’t save files to the internal memory. • The display image printout is too dark on the background. • The date and time setting are not correct. • The accuracy does not match the specification.
FAQ I want to remove the (Measurement result / FFT result / Help contents) from the display. To clear automatic measurement results, press the Measure key, Select Remove Measurement and choose Remove All. See page 72. To clear individual measurements from the screen, press the Measure key, select Display All and choose Display None. See page 74. To clear FFT result, press the Math key twice. See page82 for details. To clear Help result, press the Help key again. See page54 for details.
GDS-3000 Series User Manual I can’t save files to the internal memory. If a USB stick is inserted into one of the USB slots and you wish to save to the scope internal memory, press the Utilities key and set the file path to internal memory. Note however that image files can only be saved to USB when using the Print key. The display image printout is too dark on the background. Use the Ink Saver function which reverses the background color. For details, see page 174.
APPENDIX APPENDIX GDS-3000 Specifications The specifications apply when the GDS-3000 is powered on for at least 30 minutes under +20°C~+30°C. Model-specific GDS-3152 Channels 2 + Ext Bandwidth DC ~ 150MHz (–3dB) Rise time 2.3ns GDS-3154 Channels 4 + Ext Bandwidth DC ~ 150MHz (–3dB) Rise time 2.3ns GDS-3252 Channels 2 + Ext Bandwidth DC ~ 250MHz (–3dB) Rise time 1.4ns GDS-3254 Channels 4 + Ext Bandwidth DC ~ 250MHz (–3dB) Rise time 1.
GDS-3000 Series User Manual Common Vertical Trigger 198 Resolution Sensitivity 8 bit @1MΩ: 2mV~5V/div @50/75Ω: 2mV~1V/div Input Coupling AC, DC, GND Input 1MΩ// 15pF Impedance DC Gain ±(3% X |Readout| + 0.1div + 1mV) Accuracy Polarity Normal & Invert Maximum @1 MΩ: 300Vrms (DC+AC Peak), CAT I Input Voltage @50/75Ω: 5 VRMS max Offset Position 2mV/div ~ 100mV/div : ±0.5V Range 200mV/div ~ 5V/div : ±25V Bandwidth Dependent on the oscilloscope bandwidth (BW.
APPENDIX UART (optional): Trigger on Tx Start Bit, Rx Start Bit, Tx End of Packet, Rx End of Packet, Tx Data, Rx Data, Tx Parity Error, and Rx Parity Error. Holdoff range 10nS to 10S Coupling AC, DC, LF rej., Hf rej., Noise rej. Sensitivity GDS-31XX ~ GDS-33XX: DC ~ 50MHz Approx. 1div or 10mV 50MHz ~ 150MHz Approx. 1.5div or 15mV 150MHz ~ 350MHz Approx.
GDS-3000 Series User Manual Acquisition Mode Peak (Glitch) Detection Cursors and Cursors Measurement Automatic Measurement Cursors measurement Auto counter Power Power Quality Measurements Measurements (Option) Harmonics Normal, Average, Peak Detect, High Resolution, Single Sequence 2nS (MAX) Normal: Acquire sampled values. Average: From 2 to 256 waveforms included in average.
APPENDIX Display Interface TFT LCD Type Display Mode Display Resolution Interpolation Waveform Display Display Graticule Waveform Update Rate RS232C USB Port Ethernet Port (LAN) SVGA Video Port GPIB Go-NoGo BNC Internal flash disk Kensington Style Lock Line output Power Source Line Voltage Range Power Consumption Miscellaneous Multilanguage menu On-line help Time clock Dimensions 8" TFT LCD SVGA color display YT, XY 800 horizontal × 600 vertical pixels (SVGA) Sin(x)/x & Equivalent Time Sampling Dots, ve
GDS-3000 Series User Manual Probe Specifications Model-specific Probe Specifications GTP-151R GTP-251R GTP-351R GTP-501R 202 Applicable to Bandwidth Rise time Input Capacitance Compensation Range Applicable to Bandwidth Rise time Input Capacitance Compensation Range Applicable to Bandwidth Rise time Input Capacitance Compensation Range Applicable to Bandwidth Rise time Input Capacitance Compensation Range GDS-3152 / GDS-3154 DC ~ 150MHz 2.3ns ~12pF 10 ~ 30pF GDS-3252 / GDS-3254 DC ~ 250MHz 1.
APPENDIX Common Probe Specifications Position x 10 Operating Condition Safety Standard Attenuation Ratio 10:1 (fixed) with readout pin Input Resistance 10MΩ when used with 1MΩ input oscilloscope Maximum Input 500V CAT I, 300V CAT II Voltage derating with frequency Temperature –0°C ~ 50°C Relative Humidity ≤85% @35°C EN61010-031 CAT II 203
GDS-3000 Series User Manual GDS-3000 Dimensions GDS-3354 VARIABLE Digital Storage Oscilloscope 350 MHz 5 GS/s HORIZONTAL TRIGGER POSITION LEVEL Visual Persistence Oscilloscope Autoset Print Run/Stop Save Zoom Split Window Select Menu Single 50 % Default Setup TIME/DIV Measure Cursor Test Acquire Display Help Save/Recall Utility Force - Trig Auto-Range VERTICAL POSITION POSITION POSITION POSITION MATH M AC B W Menu Off 50W 75W AC B W 50W 75W CH1 CH2 VOLTS/DIV VOLTS/D
APPENDIX Declaration of Conformity We GOOD WILL INSTRUMENT CO., LTD. No. 7-1, Jhongsing Rd, Tucheng Dist., New Taipei City 236. Taiwan. GOOD WILL INSTRUMENT (SUZHOU) CO., LTD. No. 69 Lushan Road, Suzhou New District Jiangsu, China.
GDS-3000 Series User Manual INDEX 2-4 channel differences ............. 11 AC coupling ............................. 118 AC Priority mode ...................... 59 AC Priority mode ...................... 61 Acquisition ............................... 100 indicator ......................................... 26 Sampling mode ........................... 104 specification ................................. 199 XY mode....................................... 102 APP. Go-NoGo ......................................
INDEX safety instruction ............................ 7 Equivalent time sampling....... 105 Erase memory .......................... 143 Ethernet interface ........................................ 180 Expand by ground/center ...... 121 External trigger ........................ 127 Image file format ...................... 147 Impedance................................. 119 Initialization................................ 30 Input frequency indicator ......... 26 Intensity.....................................
GDS-3000 Series User Manual Preshoot voltage measure ........ 69 Printing connection .................................... 174 ink saver ....................................... 176 print/save key ............................ 175 Printing ..................................... 174 Probe attenuation level ......................... 123 attenuation type .......................... 122 deskew ......................................... 124 package list .................................... 16 specification ..........
INDEX scale .............................................. 117 specification ................................. 198 Video trigger ............................ 137 Warning symbol .......................... 5 Waveform data contents ............................... 148 file contents ................................. 148 how to recall ................................ 162 how to save .................................. 157 invert waveform ......................... 119 roll mode ...................................
