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 ......................................................... 11 GDS-3000 Series Overview ................... 12 Appearance .......................................... 17 Set Up .................................................. 28 QUICK REFERENCE ......................................................... 37 Menu Tree / Operation Shortcuts ........ 39 Default Settings ....................
GDS-3000 Series User Manual Create/Edit file labels ......................... 152 Save ................................................... 154 Recall ................................................. 161 Reference Waveforms ......................... 166 FILE UTILITIES ............................................................... 169 PRINT OUT .................................................................... 177 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 INSTRUCTIONS Safety Guidelines General Guideline CAUTION Make sure the BNC input voltage does not exceed 300V peak. 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. Avoid severe impact or rough handling that leads to damaging the GDS-3000. Do not discharge static electricity to the GDS3000. Use only mating connectors, not bare wires, for the terminals.
GDS-3000 Series User Manual Cleaning the GDS-3000 Operation Environment Disconnect the power cord before cleaning. Use a soft cloth dampened in a solution of mild detergent and water. Do not spray any liquid. Do not use chemical containing harsh material such as benzene, toluene, xylene, and acetone.
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 10
GETTING STARTED 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 .............................................. 12 Series lineup ..........................................................................
GDS-3000 Series User Manual GDS-3000 Series Overview Series lineup The GDS-3000 series consists of 6 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.
GETTING STARTED Main Features Performance Features High sampling rate: up to 5GSa/s real-time, 100GSa/s equivalent-time Deep memory: 25k points record length Minimum 2ns peak detection 2 and 4 channel models Bandwidth up to 350 MHz 5GSa/s (200ps resolution) real-time sampling rate 100GSa/s equivalent sample rate VPO waveform processing Large 8’’ 800 x 600 high-resolution TFT LCD Unique split window function Flexible application modules Three standard input i
GDS-3000 Series User Manual Interface USB host port: front and rear panel, for storage devices USB slave port(Optional GPIB to USB), RS-232C port: for remote control Calibration output Go-No Go output External trigger input Ethernet port Accessories Standard Accessories Options Optional Accessories 14 Part number Description 82DS-33040M01 User manual N/A region dependent Power cord Option Number Description DS3-PWR Power analysis software DS3-SBD Series Bus analysis s
GETTING STARTED Driver GDP-025 25MHz high voltage differential probe GDP-050 50MHz high voltage differential probe GDP-100 100MHz high voltage differential probe GCP-530 50MHz/ 30A current probe GCP-1030 100MHz/ 30A current probe GCP-206P Power supply for current probe (2 input channel) GCP-425P Power supply for current probe (4 input channel) GTP-151R Passive probe; 150 MHz,10X with readout GTP-251R Passive probe; 250 MHz,10X with readout GTP-351R Passive probe; 350 MHz,10X with readou
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 Note 16 Power cord User manual (this document) For detailed probe specifications, see page204. The programming manual, PC software, and USB driver are downloadable from the GWInstek website. Visit www.gwinstek.com, in the oscilloscope section.
GETTING STARTED Appearance GDS-3554/3354/3254/3154 Front Panel Variable knob and select key LCD Function Split window Horizontal cluster keys controls GDS-3354 Trigger controls Print key Side menu keys Bottom menu keys Vertical controls Menu key Power button Math and Reference keys USB Probe compensation, Ground port Ext trigger input Bus keys CH1~4 input GDS-3352/3252/3152 Front Panel 17
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/show 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. To separate each channel into a split window, use one of the four windowed keys. For more details on windowing see page 67. 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 vertically on the display screen.
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 (page62). 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 Press the Reference key to set or remove reference waveforms. BUS keys 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. Function Keys 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 126). Input impedance: 1MΩ±3%, Voltage input: ±15V(peak), EXT trigger capacitance:~15pF. Power Switch Used to turn the power on/off.
GETTING STARTED Rear Panel Calibration output Outputs the signal for vertical scale accuracy calibration (page 189). Trigger output Outputs the trigger timing. Go-No Go output Outputs Go-No Go test results (page 88) as 10us pulse signal. Video Out Outputs SVGA resolution to an external display. RS232 RS232 remote control. Line Out Audio line out.
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 Waveforms 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. The active channel is shown with a solid color. Math Active channel (CH3) Bus (B1) Reference waveform (Ref1) Activated channel (CH4) Trigger position Shows the position of the trigger. Horizontal position Shows the horizontal position.
GDS-3000 Series User Manual Date and Time Current date and time (page 145). Memory bar The ratio and the position of the displayed waveform compared with the internal memory (page 114). Trigger status Triggered. Not triggered, display not updated. Indicates the pre-trigger is active. Trigger stopped. Also appears in Run/Stop (page62). Roll mode. Autoset mode. For trigger details, see page 126.
GETTING STARTED Trigger configuration Trigger source, slope, voltage. Trigger source, trigger (video), field, line. For trigger details, see page 126. Channel status Channel 1, inverted, AC coupling, 1V/Div Channel 1, GND coupling, 1V/Div For channel details, see page 119.
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 161.
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 (Autoset) Press the Autoset key. A square waveform appears on the center of the screen. For Autoset details, see page 61. 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.
GETTING STARTED 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. When the user manual says to “toggle” a value or parameter, press the corresponding menu item. Pressing the item will toggle the value or parameter. Active parameters are highlighted for each menu item.
GDS-3000 Series User Manual 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. 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.
GETTING STARTED Toggling a menu parameter 1. Press the bottom menu key to toggle the parameter.
GDS-3000 Series User Manual 1. Press the relevant function key again to reduce the bottom menu. For example: press the trigger menu key to reduce the trigger menu. Remove all menus 1. Press the Menu Off key to reduce each menu level.
QUICK REFERENCE 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 .................................... 39 Convention ........................................................................... 39 Acquire Key .......................................................................... 40 Autoset Key .........
GDS-3000 Series User Manual Zoom Key............................................................................. 52 Default Settings .............................................................. 53 Built-in Help ...................................................................
QUICK REFERENCE 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.
GDS-3000 Series User Manual Acquire Key Sets the acquisition mode. Position to 0s Sample Peak Detect Hi Resolution Average 2,4,8,16,32,64, 128,256 ET Sin(x)/x XXX.XX MSPS XY Autoset Key Automatically finds the signal and sets the horizontal and vertical scale. Auto-Range Constantly adjusts the vertical and or horizontal scale.
QUICK REFERENCE CH1 ~ 4 Key Set the channel input parameters. AC DC GND 1MΩ 75Ω 50Ω Off 20MHz 100MHz 200MHz 350MHz Center Probe Voltage Current Attenuation 1mX ~ 1kX Set to 10X Deskew -50ns~50ns Set to 0s Cursor Key Set cursor positions.
GDS-3000 Series User Manual Display Key Set the display properties. Vector Time 100ms~10s Infinite Waveform Intensity 0%~100% Graticule Intensity 10%~100% Help Key Turn help mode On/Off.
QUICK REFERENCE Math Key Standard math and FFT functions.
GDS-3000 Series User Manual Measure Key Display automatic measurements either individually or as voltage/current, time or delay measurement groups.
QUICK REFERENCE Print/Save Key Print or save screen images.
GDS-3000 Series User Manual Save/Recall Key Save and recall images, waveforms and panel setups. Edit labels for reference and setup files.
QUICK REFERENCE Test Key Use the Go-NoGo application as well as additional optional software such as the Power Analysis software.
GDS-3000 Series User Manual Trigger Type Menu Trigger Edge Menu Edge EXT AC Line EXT Probe Volt Current Alternate On Off AC Reject Off HF LF Noise Reject On Off Trigger Delay Menu 48 Normal 1.4V -1.3V 10.
QUICK REFERENCE Trigger Pulse Width Menu Pulse Width EXT AC Line EXT Probe Volt Current Alternate On Off < = ≠ > 4.00ns~10.0S Auto Normal 1.4V 10.0ns ~ 10.0s Minimum -1.
GDS-3000 Series User Manual Trigger Rise & Fall Menu < = ≠ CH1 CH2 CH3 CH4 EXT Probe Volt Current Alternate On Off > 4.00ns~10.0s High -80V~80V Low -80V~80V Normal Minimum 1.4V -1.3V Utility Key Time English Trad. Chinese Simp.
QUICK REFERENCE Utility Key – I/O Utility Key – File Utilities Utility Key – Self Calibration 51
GDS-3000 Series User Manual Zoom Key 52
QUICK REFERENCE Default Settings The default factory installed settings can be recalled at any time by pressing the Default Setup key. Acquire Mode: Sample XY: OFF Sample mode: ET Delay: On Sample rate: 250MSPS Display Mode: Vector Persistence: 100ms 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 Save recall 54 Rejection: Off Noise Rejection: Off Slope: positive Level: 0.00V Mode: Auto Holdoff: 10.
QUICK REFERENCE 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. 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.
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MEASUREMENT MEASUREMENT Basic Measurement ......................................................... 59 Channel Activation .............................................................. 59 Autoset .................................................................................. 61 Auto Range ........................................................................... 62 Run/Stop .............................................................................. 63 Horizontal Position/Scale......................
GDS-3000 Series User Manual Serial Bus ........................................................................ 96 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 77 Configuration → from page 88 Before operating the oscilloscope, please see the Getting Started chapter, page 11. Channel Activation Activate channel To activate an input channel, press a channel key. 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 61) does NOT automatically activate the channels to which input signals are connected.
MEASUREMENT Autoset Background Panel operation 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. Horizontal scale Vertical scale Trigger source channel 1. Connect the input signal to the GDS-3000 and press the Autoset key. 2. The waveform appears in the center of the display. Before After 3. To undo Autoset, press Undo Autoset from the bottom menu.
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 be also be configured to only adjust the vertical or horizontal scale. Panel operation 1.
MEASUREMENT 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. Limitation Auto Range does not work in the following situation. Input signal frequency is less than 20Hz Input signal amplitude is less than 30mV Run/Stop Background By default, the waveform on the display is constantly updated (Run mode).
GDS-3000 Series User Manual Freeze waveform In the Single Trigger mode, the by Single Trigger waveform always stays in the mode Stop mode, and is updated only when the Single key is pressed. When the single key is pressed, the Run/Stop key turns red. For details, see page 126. Waveform operation The waveform can be moved or scaled in both Run and Stop mode, but in different manners. For details, see page 114 (Horizontal position/scale) and page 119 (Vertical position/scale).
MEASUREMENT Select horizontal To select the timebase (scale), scale turn the TIME/DIV knob; left (slow) or right (fast). Range 1ns/div ~ 100s/div, 1-2-5 increments 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 waveform that is displayed on screen. Fast Medium Slow The Sample rate changes according to the time/division. See page 106.
GDS-3000 Series User Manual Vertical Position/Scale For more detailed configuration, see page119. Set vertical position To move the waveform up or down, turn the vertical position knob for each channel. 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).
MEASUREMENT 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. All functions and features can be used with split screen mode bar the Math, XY display and Zoom mode. Enter Split screen 1. Activate each channel that is mode to be used in the split screen page 59 mode. 2. Press the Split Window key to enter the split screen mode. 3.
GDS-3000 Series User Manual CH4 Active Example CH4 Not active Reference Waveforms 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 first split window, Ref2 to the second window and so on.
MEASUREMENT 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. Delay Meas.
GDS-3000 Series User Manual Time measurement 70 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 wid
MEASUREMENT Delay measurement 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 falling edge LFR Time
GDS-3000 Series User Manual 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. 2. Press Add Measurement from the bottom menu. 3. Choose either a V/I, Time or Delay measurement from the side menu.
MEASUREMENT 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.
GDS-3000 Series User Manual 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 Display All mode Display All mode can be customized to limiting measurement 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.
MEASUREMENT 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. 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. Remove measurements To remove the measurement results, press OFF.
GDS-3000 Series User Manual Delay Measurements 76 Delay type measurement is not available in this mode as only one channel is used as the source. Use the Individual measurement mode (page 72) instead.
MEASUREMENT 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 113). Use Horizontal Cursors Panel operation/ 1. Press the Cursor key once. Range 2. Press H Cursor from the bottom menu. 3.
GDS-3000 Series User Manual 5. Use the Variable knob to move the movable cursor(s) left or right. Cursors Time, Voltage/Current Delta (difference between cursors) Example FFT Math The FFT Math has different content. For FFT math details, see page 86.
MEASUREMENT XY mode XY mode cursors measure a number of X by Y measurements. Cursors Time, rectangular, polar coordinates, products, ratio.
GDS-3000 Series User Manual Use Vertical Cursors Panel operation/ 1. Press the Cursor key twice. Range 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. 5. Use the Variable knob to move the cursor(s) up or down.
MEASUREMENT Example Horizontal cursors Vertical cursors FFT Math The FFT Math has different content. For FFT math details, see page 86.
GDS-3000 Series User Manual XY mode XY mode cursors measure a number of X by Y measurements. Cursors Rectangular, polar co-ordinates, products, ratio.
MEASUREMENT 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.
GDS-3000 Series User Manual 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....
MEASUREMENT 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 Math Source 2 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.
GDS-3000 Series User Manual FFT Panel operation 1. Press the Math key. 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.
MEASUREMENT Channel 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 2mV~1kV RMS, 1~20 dB To clear the FFT result from the display, press the Math key again.
GDS-3000 Series User Manual Applications Overview Background The APP. function allows different applications to be run. Applications can be downloaded from the GW Instek website. Applications GO-NOGO The GO_NOGO application can be used to set threshold levels for input signals. GO-NOGO checks if a waveform fits inside a userspecified maximum and minimum amplitude boundary (template). Running Applications Background The APP.
MEASUREMENT 3. Scroll through each Application using the Variable knob. 4. Select an application by pressing the Select key twice.
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 and can be set. Choose the Go_NoGo application from the APP. menu. See page 88. Go-NoGo Conditions Select the Go-NoGo conditions (When) and actions when a Go-NoGo condition has been met (Violating). 1.
MEASUREMENT Enter: 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 5Vpp a positive pulse each time a NoGo violation has occurred for a minimum of 10us.
GDS-3000 Series User Manual Circuit diagram 94
MEASUREMENT Power Analysis Power analysis provides automatic measurement for a number of advanced measurement types such as power quality, harmonics, ripple and deskew. The Power analysis software is an optional software module. The GDS-3000 includes a 1 month trial. To install the optional software module or the limited time trial, please see page 193. Please see the Power Analysis manual for more details on using the power analysis software.
GDS-3000 Series User Manual Serial Bus The serial bus trigger and decode software includes support for 3 common serial interfaces, SPI, UART and 12C. Each interface is fully configurable to accommodate a wide range of protocol variation. Up to two different UART or I2C buses can be used at the same time. Only 1 SPI bus can be used at a time. Each input can be displayed as binary or hexadecimal. An event table can also be created to aid in debugging.
MEASUREMENT SPI The SPI (Serial Peripheral Interface) bus is fully configurable to accommodate the wide variety of SPI interfaces.
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CONFIGURATION CONFIGURATION Acquisition ..................................................................... 101 Select Acquisition Mode.................................................... 101 Show Waveform in XY Mode .......................................... 103 Set the Sampling Mode...................................................... 105 Real time vs Equivalent Time Sampling Mode .............. 106 Display ...........................................................................
GDS-3000 Series User Manual Trigger ........................................................................... 126 Trigger Type Overview ..................................................... 126 Trigger Parameter Overview ............................................ 128 Setup Holdoff Level .......................................................... 132 Setup Trigger Mode ........................................................... 133 Using the Edge Trigger .................................................
CONFIGURATION 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 The first sample in each acquisition (bucket) is used. This is the default acquisition mode. Peak detect Only the minimum and maximum value pairs for each acquisition interval (bucket) are used.
GDS-3000 Series User Manual 2. To set the Acquisition mode, press Mode on the on the bottom menu. 3. Select an acquisition mode from the side menu.
CONFIGURATION Show Waveform in XY Mode Background The XY mode maps the voltage of channel 1 or channel 3 to the voltage of channel 2 or 4. This mode is useful for observing the phase relationship between waveforms. Connection 1. Connect the signals to Channel 1 (X-axis) and Channel 2 (Y-axis) or Channel 3 (X2-axis) and Channel 4 (Y2-axis). 2. Make sure a channel pair is active (CH1&CH2 or CH3&CH4). Press the Channel key if necessary. A channel is active if the channel key is lit. Panel operation 1.
GDS-3000 Series User Manual 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. 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. The horizontal position knob and Time/Div knob can still be used under the XY mode. Turn off XY mode To turn off XY mode, choose OFF (YT) mode.
CONFIGURATION 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 curves to join each sampled point to give an accurate representation of a signal between sampled points. Panel operation 1. Press the Acquire key. 2.
GDS-3000 Series User Manual 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.
CONFIGURATION 107
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. 2. Press Dot Vector to toggle between Dot and Vector mode. Range Example: 108 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. 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. Time Clear 100ms~10s, Infinite To clear persistence, press Clear Persistence.
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. 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. 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 sans 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 62. Panel operation 1. Press the Run/Stop key. To unfreeze the waveform, press the Run/Stop key again. 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 33 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 position 1. To reset the horizontal position, press the Acquire key. 2.
CONFIGURATION Select Horizontal Scale 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 The timebase indicator updates as the TIME/DIV is adjusted. Time base Horizontal position Run mode In Run mode, the memory bar and waveform size keep their proportion. When the time base becomes slower, roll mode is activated. Stop mode In Stop mode, the waveform size changes according to the scale.
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 (≥500Sa/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. 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. To reset the horizontal position, press Reset H Position to 0s.
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. To reset the Zoom position, press Reset Zoom Position to 0s. Scroll Sensitivity To alter the scrolling sensitivity of the key to Zoom Window, press the toggle the scrolling sensitivity. Sensitivity Fine, Coarse Exit 118 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 Panel operation 1. To move the waveform up or down, turn the vertical position knob for each channel. 2. As the waveform moves, the vertical position of the cursor appears at the bottom half of the display. Reset Position 1. To reset the vertical position, press the channel key for the signal. 2. Press Position.
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 but the waveform shape stays the same. Select Coupling Mode Panel operation 1. Press a channel key. 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 AC coupling DC coupling Set the Impedance Panel operation 1. Press the Channel key. 2. Press Impedance repeatedly to toggle between the impedance settings. Impedance 1MΩ, 75Ω, 50Ω Invert Waveform Vertically Panel operation 1. Press the Channel key. 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. 2. Press Bandwidth from the bottom menu. 3. Choose a bandwidth from the side menu (depending on the bandwidth of the oscilloscope).
CONFIGURATION 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. 2. Press Expand repeatedly to toggle between expand By Ground and Center.
GDS-3000 Series User Manual Expand by Ground Expand by Center Expand by Ground Expand by Center Select Probe Type Background A signal probe can be set to voltage or current. Panel operation 1. Press the Channel key. 2. Press Probe from the bottom menu. 3. Press the Voltage/Current softkey to toggle between voltage and current. 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.
CONFIGURATION 3. Press Attenuation on the side menu and use the variable knob to set the attenuation. Alternatively, press Set to 10X. Range Note 1mX ~1kX (1-2-5 step) The attenuation factor adds no influence on the real signal. It just changes the voltage/current scale on the display. 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. 2.
GDS-3000 Series User Manual 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.
CONFIGURATION 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”. A runt is a pulse that passes a specified threshold but fails to pass a second threshold.
GDS-3000 Series User Manual Trigger Parameter Overview All the following parameters are common for all the trigger types unless stated otherwise. Trigger source Trigger mode Coupling 128 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.
CONFIGURATION (Edge, Delay) 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. Slope Trigger on a rising edge. (Edge, Delay, Rise & Fall) Trigger on a falling edge. Don’t care. (Rise & Fall trigger type only) Trigger Level Level Adjusts the trigger manually using the Trigger LEVEL knob. Set to TTL 1.4V Sets the trigger level to 1.
GDS-3000 Series User Manual Sets the source trigger to the minimum time. Set to Minimum When (Pulse Width) Threshold (Pulse Width) Sets the pulse width (4ns ~ 10s) and the triggering condition. > Longer than = Equal to < Shorter than ≠ Not equal to Sets the amplitude threshold level for the pulse widths. Threshold –10V ~ +10V, user-set level Set to TTL 1.4V Set to ECL -1.
CONFIGURATION 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 Sets the Low threshold. (Rise & Fall) Set to TTL 1.4V Set to ECL -1.
GDS-3000 Series User Manual 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. Panel operation 1. Press the trigger Menu key. 2. To set the Holdoff time, press the Holdoff (or Mode/Holdoff) menu button on the bottom bezel. 3.
CONFIGURATION 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 116. Panel operation 1. Press the Trigger menu key. 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. 2. Press Type from the lower bezel menu. 3.
GDS-3000 Series User Manual 5. Use the side menu to select the trigger source type. Range Channel 1 ~ 4 (Alternate On/Off), Line, EXT; Ext Probe (Volt/Current), 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. Range On, Off 10.
CONFIGURATION 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. 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.
GDS-3000 Series User Manual 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. 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.
CONFIGURATION 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), 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. Press Threshold from the lower bezel to edit the pulse width threshold.
GDS-3000 Series User Manual Using Video Trigger Panel operation 1. Press the trigger Menu key. 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.
CONFIGURATION 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.
GDS-3000 Series User Manual 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.
CONFIGURATION 11. Use the side menu to set the lower threshold. Range -80V~80V Set to TTL 1.4V Set to ECL -1.3V Set to 50% Using Rise and Fall Trigger Panel operation 1. Press the trigger Menu key. 2. Press the Type key from the lower bezel menu. 3. Select Others 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.
GDS-3000 Series User Manual 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: -80V~80V Low: -80V~80V Set to TTL 1.4V Set to ECT -1.
CONFIGURATION 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) Japanese Korean 1. Press the Utility key. 2. Select the language from the side menu.
GDS-3000 Series User Manual 3. Press System Info from the side menu. A display panel will appear showing: Manufacturer name Model name Serial number Firmware version Manufacturer URL 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. 2. Press System from the lower menu. 3.
CONFIGURATION 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. 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. parameter 2. Press Date & Time on the lower menu.
GDS-3000 Series User Manual 3. Set the Year, Month, Day, Hour and Minute from the side menu. Year 2000 ~ 2037 Month 1 ~ 12 Day 1 ~ 31 Hour 1~24 Minute 0~59 4. Press Save Now from the side menu to save the date and time. 5. Turn Off the display and turn it On again (power cycle). x2 6. Make sure the date/time setting is correctly reflected at the top of the display.
SAVE/RECALL SAVE/RECALL File Format/Utility .......................................................... 148 Image File Format.............................................................. 148 Waveform File Format ...................................................... 148 Spreadsheet File Format.................................................... 149 Setup File Format............................................................... 150 Create/Edit file labels .................................................
GDS-3000 Series User Manual 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 is used for storing and recalling waveforms that can be used for measurement with the GDS-3000 series.
SAVE/RECALL 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.
GDS-3000 Series User Manual 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.
SAVE/RECALL Math Trigger Utility Save/ recall Source1 Position Operator Unit/Div Source2 Math Off Type Noise Rejection Source Slope Coupling Level Alternate Mode Rejection Holdoff Language Ink Saver Volume USB device Print key USB class Image file format Data file format 151
GDS-3000 Series User Manual 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. 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.
SAVE/RECALL 2. The Edit Label window appears. 3. Use the Variable knob to highlight a character. 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 Press Cancel to cancel the operation and return to the previous menu.
GDS-3000 Series User Manual Save File Type/Source/Destination Item Source Panel setup (DSxxxx.set) Waveform data (DSxxxx.csv) (DSxxxx.lsf) (CH1~4.lsf)* Display image (DSxxxx.bmp) (DSxxxx.
SAVE/RECALL 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. Rear 2. Press the Save/Recall key from the front panel. 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. Press Ink Saver to toggle Ink Saver On or Off.
GDS-3000 Series User Manual 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 167 for details. Save Image - Print Key Background The Print key can be assigned to Print or to Save.
SAVE/RECALL 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 key to save to USB Ink Saver 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. Ink Saver On (Inverted) Ink Saver Off (Normal) Save Waveform Panel operation Front 1.
GDS-3000 Series User Manual 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. To Ref1~4, Wave1~4 To File DSxxxx.csv, DSxxxx.lsf, CH1~CH4.lsf* *(saved to an ALLXXX directory) 6. Press Save Now to confirm saving. When completed, a message appears at the bottom of the display.
SAVE/RECALL PC software (FreeWave) Saving waveforms can also be accomplished using FreeWave, downloadable from GWInstek website. Save Setup 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. Rear 2. Press the Save/Recall key from the front panel. 3. Press Save Setup from the bottom menu. 4. Press To (internal memory) or To File and choose a destination to save.
GDS-3000 Series User Manual 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 167. Edit Label To edit labels for Setup files, press Edit Label.
SAVE/RECALL 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)* Destination *Recalled from ALLXXX directories.
GDS-3000 Series User Manual Sample rate: 250MSPS Display Mode: Vector Persistence: 100ms 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.
SAVE/RECALL 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 2. The waveform must be stored in advance. See page 156 for waveform store details. 3. Press the Save/Recall key. 4. Press Recall Waveform from the bottom menu. The Recall menu appears. 5. Press From (internal memory) or From File and choose a source to recall from.
GDS-3000 Series User Manual 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 167. 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. Rear 2. Press the Save/Recall key. 3.
SAVE/RECALL 5. Press Recall Now to confirm recalling. 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 page 167. Edit Label To edit labels for Setup files, press Edit label.
GDS-3000 Series User Manual Reference Waveforms Recall and Display Reference Waveforms Panel operation A reference waveform must be stored in advance. See page 156 to store waveforms as reference waveforms. 1. Press the REF key on the front panel. 2. Pressing R1~R4 repeatedly will toggle the corresponding reference waveform OFF/ON. Turning R1~R4 ON will open the corresponding reference menu. 3.
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.
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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 ................................................................... 170 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 Panel operation 1. Press the Utility key. 2. Press File Utilities from the bottom menu.
FILE UTILITIES 3. The file system appears. 4. Use the Variable knob to move the file cursor up and down. Left Right Use the Select key to choose a file or directory or to set the file path. The file path can be set to internal memory or to a directory on a USB memory stick. Note Selecting a waveform file will cause that file to be recalled to the currently configured reference waveform.
GDS-3000 Series User Manual Create Folder Panel operation 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. Create Folder 4. Press Create Folder to make a new directory at the selected location. 5. Use the Variable knob to highlight a character.
FILE UTILITIES 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 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.
GDS-3000 Series User Manual 4. Press Rename when a file is chosen. 5. Use the Variable knob to highlight a character. Press Enter Character select a number or letter. Press Back Space to delete a character. 6. 174 Press Editing completed to create the folder or file name.
FILE UTILITIES Delete File Panel operation 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.
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PRINT OUT PRINT OUT Screen images can be printed to any PictBridge compatible printer using the USB device port. The GDS-3000 has a dedicated Print 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 GWInstek website. Printer I/O Configuration Panel Operation 1.
GDS-3000 Series User Manual Print Output Ensure the USB port has been configured to the Printer before trying to print, see page 177. Panel operation 1. Press the Utility key. 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. 5. Press the Print key located on the screen bezel. The display image is printed out.
PRINT OUT 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.
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REMOTE CONTROL CONFIG REMOTE CONTROL CONFIG This chapter describes basic configuration of IEEE488.2 based remote control. For a command list, refer to the programming manual downloadable from GWInstek website, www.gwinstek.com Interface Configuration .................................................. 182 Configure USB Interface................................................... 182 Configure RS-232C Interface ........................................... 183 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 (full speed) USB Class CDC (communications device class) 1. Press the Utility key. 2. Press I/O from the bottom menu. 3. Press USB Device Port from the side menu and choose Computer. 4. Press Computer from the side menu. 182 6. Connect the USB cable to the rear panel slave port. 7.
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. 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. Stop Bits 1, 2 6.
GDS-3000 Series User Manual 7. Connect the RS-232C cable to the rear panel port: DB-9 male connector. For a functionality check, see page 188. 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 Panel operation 1. Press the Utility key. 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. 5. Use the Up and Down arrows on the side menu to navigate each Ethernet configuration item.
GDS-3000 Series User Manual 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. 3. Press I/O from the bottom menu. 4. Press USB Device Port from the side menu and choose Computer. 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 MTTTY (Multi-Threaded TTY). 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 Run this query command via the terminal.
MAINTENANCE MAINTENANCE Two types of maintenance operations are available: calibrate vertical resolution, and compensate the probe. Run these operations when using the GDS-3000 in a new environment. Vertical Resolution Calibration ........................................ 190 Probe Compensation ......................................................... 191 Activating Optional Software ...........................................
GDS-3000 Series User Manual Vertical Resolution Calibration Panel operation 1. Press the Utility key. 2. Press System from the bottom menu. 3. Press NEXT from the side menu. 4. Press Self Cal on the side menu. 5. A message appears to “Set CAL to CH1, then press Self Cal”. 6. Connect the calibration signal from the rear panel to the Channel1 input with a BNC cable. 7. Press Self Cal again after connecting CAL to the channel 1 input.
MAINTENANCE 8. Repeat the above step for Channel 2, 3* and 4* when prompted. *4 channel models. 9. When the calibration for all channels has completed, the display goes back to the default state. 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). 2. Press the CH1 key to activate CH1. 3.
GDS-3000 Series User Manual 5. Set the Probe attenuation to Voltage, 10X. Page 124 6. Press the Autoset key. The compensation signal appears on the display. 7. Press the Display key, then set the display type to Vector. 8. Turn the adjustment point on the probe until the signal edge becomes sharp.
MAINTENANCE Activating Optional Software Background The GDS-3000 has Power Analysis software (page 95) and Serial bus decoding software (page 95) as optional extras. An activation key is required to activate the software. An activation key is required for each optional software package. If the optional software packages have not been purchased, a time trial demonstration is available for a 1 month period. Before activating the time trial demonstration, ensure the date and time has been set.
GDS-3000 Series User Manual 4. Press File Utilities from the bottom menu. 5. The file system appears. 6. Use the Variable knob and Select key to select the activation key from the USB root directory. When prompted to continue, press the Select key again. Files: Confirm Activation key PowerEnableTrial.LIS PowerEnable.LIS BusEnableTrial.LIS BusEnable.LIS Press the Test key on the front panel and Power Analysis from the bottom menu to see if the Power Analysis activation worked.
FAQ 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. • USB does not work. • The accuracy does not match the specification.
GDS-3000 Series User Manual 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 73. To clear individual measurements from the screen, press the Measure key, select Display All and choose Display None. See page 75. To clear FFT result, press the Math key twice. See page83 for details. To clear Help result, press the Help key again.
FAQ 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. When a USB stick is inserted into any of the USB slots, the file path is automatically set to the USB root directory. The display image printout is too dark on the background. Use the Ink Saver function which reverses the background color. For details, see page 177.
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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 200 Resolution 8 bit @1MΩ: 2mV~5V @50/75MΩ: 2mV~1V Input Coupling AC, DC, GND Input 1MΩ// 15pF Impedance ±(3% X |Readout| + 0.1div + 1mV) DC Gain Accuracy Polarity Normal & Invert Maximum @1 MΩ: 300V (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 Holdoff range 10nS to 10S Coupling AC,DC,LF rej. ,Hf rej. ,Noise rej. Sensitivity DC ~ 50MHz Approx. 1div or 1.0mV 50MHz ~ 150MHz Approx. 1.5div or 15mV 150MHz ~ 350MHz Approx. 2div or 20mV External Range ±15V Trigger Sensitivity DC ~ 50MHz Approx. 1div~10mV 150MHz ~ 250MHz Approx. 150mV 250MHz ~ 350MHz Approx.
GDS-3000 Series User Manual Auto counter 6 digits, range from 2Hz minimum to the rated bandwidth Power Power Quality VRMS, V Crest Factor, Frequency, IRMS, I Crest Measurements Measurements Factor, True (Option) Power, Apparent Power, Reactive Power, Power Factor, Phase Angle.
APPENDIX Power Source Line Voltage Range Power Consumption Miscellaneous Multilanguage menu On-line help Time clock Dimensions AC 100V ~ 240V , 47Hz ~ 63Hz , Auto selection 96VA Available Available Time and Data ,Provide the Data/Time for saved data 400W X 200H X 130D, Approx.
GDS-3000 Series User Manual Probe Specifications Model-specific GTP-151R GTP-251R GTP-351R Applicable to Bandwidth Rise time Input Capacitance Applicable to Bandwidth Rise time Input Capacitance Applicable to Bandwidth Rise time Input Capacitance GDS-3152 / GDS-3154 DC ~ 150MHz 2.3ns ~12pF GDS-3252 / GDS-3254 DC ~ 250MHz 1.4ns ~12pF GDS-3352 / GDS-3354 DC ~ 350MHz 1.
APPENDIX 210. 0 221. 0 GDS-3000 Dimensions 109. 6 400. 0 120.
GDS-3000 Series User Manual Declaration of Conformity We GOOD WILL INSTRUMENT CO., LTD. No. 7-1, Jhongsing Rd, Tucheng City, Taipei County 236. Taiwan. GOOD WILL INSTRUMENT (SUZHOU) CO., LTD. No. 69 Lushan Road, Suzhou New District Jiangsu, China.
INDEX INDEX 2-4 channel differences.............. 12 AC coupling ............................. 120 Acquisition ............................... 101 Conventions ................................ 33 Coupling mode......................... 120 Cursor indicator ......................................... 26 Sampling mode ........................... 105 specification ................................. 201 XY mode....................................... 103 horizontal .......................................
GDS-3000 Series User Manual External trigger ........................ 128 input terminal ............................... 22 specification ................................. 201 Falling time measure ................. 70 FAQ ........................................... 195 FFT............................................... 86 horizontal cursor .......................... 78 Overview ....................................... 83 vertical cursor................................ 81 File create folder ................
INDEX attenuation type .......................... 124 deskew ......................................... 125 package list .................................... 16 specification ................................. 204 Probe compensation ................ 191 Program manual download ..... 16 Pulse runt trigger .................... 139 Pulse time measure.................... 70 Pulse width trigger .................. 136 Real time sampling .................. 106 Rear panel diagram ................... 23 Recall ......
GDS-3000 Series User Manual Zoom waveform ......................
