Compact Digital Storage Oscilloscope and Digital Multimeter GDS-200 and GDS-300 Series USER MANUAL GW INSTEK PART NO.
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SAFETY INSTRUCTIONS Table of Contents SAFETY INSTRUCTIONS ................................................... 5 GETTING STARTED ......................................................... 10 GDS-200 and GDS-300 Series Overview 12 Appearance .......................................... 15 Initial Setup ......................................... 30 OPERATION .................................................................... 37 Gesture Control ................................... 41 Common Menu UI Elements ......
GDS-200 & GDS-300 Series User Manual APPENDIX ..................................................................... 173 Firmware Update ............................... 175 Fuse Replacement .............................. 176 Resistor Standards ............................. 177 GDS-200/300 Default Settings ........... 180 GDS-200/300 Specifications ............... 181 GDS-200/300 Dimensions .................. 185 Declaration of Conformity .................. 186 INDEX .........................................
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 instrument. WARNING Warning: Identifies conditions or practices that could result in injury or loss of life.
GDS-200 & GDS-300 Series User Manual Safety Guidelines General Guideline CAUTION Do not place any heavy object on the instrument. Avoid severe impact or rough handling that leads to damaging the instrument. Do not discharge static electricity to the instrument. Use only mating connectors, not bare wires, for the terminals. Do not block the cooling fan opening. Do not disassemble the instrument unless you are qualified.
SAFETY INSTRUCTIONS AC Input voltage range: 100VAC-240VAC Frequency: 47Hz-63Hz Output: 12 DCV, 36W Max To avoid electrical shock connect the protective grounding conductor of the AC power cord to an earth ground. Power Supply (DC) DC Input voltage range (10.5-13.5 V DC, 3A) Cleaning the Instrument 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-200 & GDS-300 Series User Manual Storage environment Location: Indoor Temperature: -25°C to 70°C Relative Humidity: <90% Disposal 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 instrument in the United Kingdom, make sure the power cord meets the following safety instructions.
GDS-200 & GDS-300 Series User Manual GETTING STARTED This chapter will allow you to quickly set up a GDS-200 or GDS-300 series oscilloscope and run over the basic operation and features. Before you can get started, you will need to check the package contents (standard accessories, page 14). After the contents are checked the Overview section will describe all the major features and functions of the oscilloscopes in the GDS-200 and GDS-300 series.
GETTING STARTED Accessories................................................................................................................ 14 Appearance ..................................................................... 15 GDS-200/300 Front Panel..................................................................................... 15 Rear Panel ................................................................................................................. 17 Interface Panel............................
GDS-200 & GDS-300 Series User Manual GDS-200 and GDS-300 Series Overview Series Lineup There are 6 models in the series, divided by DSO bandwidth, DSO memory depth, DMM digit resolution and the DMM temperature function.
GETTING STARTED Features Simultaneous DMM and DSO operation Portrait and landscape modes Large 800 x 480 TFT panel and capacitive touch panel 7.
GDS-200 & GDS-300 Series User Manual Accessories Standard Accessories Part number Description Certificate of calibration Optional Accessories Download 14 82DS-2200E01 User manual CD GAP-001 AC-DC adapter GTP-100A-4 100MHz Probe. for GDS-207 /307, GDS-210 /310 GTP-200A-4 200MHz Probe.
GETTING STARTED Appearance GDS-200/300 Front Panel BNC inputs Digital Storage Oscilloscope GDS-220 200 MHz 1GSa/s Interface panel Display COM port VW Current ports A mA COM 600mA MAX FUSED CAT II CAT III port VW 600V 300V 10A MAX FUSED Display Color LCD screen, 800 x 480, capacitive touch. Interface Panel The interface panel holds a number of different interfaces such as the input power socket, USB device port and the options power port. See page 18 for details.
GDS-200 & GDS-300 Series User Manual DMM Ports A mA COM 600mA MAX FUSED CAT II CAT III VW 600V 300V 10A MAX FUSED mA Accepts up to 600mA. Fuse protection: 1A. A Accepts up to 10A. Fuse protection: 10A COM Com port VW Voltage, Resistance and Diode port.
GETTING STARTED Rear Panel Horizontal stand Vertical stand Vent Vent Do not block the vent opening. Vertical Stand Use the vertical stand to position the unit vertically. Horizontal Stand Use the horizontal stand to use the unit horizontally.
GDS-200 & GDS-300 Series User Manual Interface Panel Power input for options Calibration output 12V input port Power switch Internal use ports (restricted access) Power Switch USB device port Power switch to turn the unit on or off. DC input. This port is used for charging the internal lithium battery. Accepts power from the supplied AC-DC power adapter. Input Voltage: 10.5V - 13.5V Input Current: At least 3.5A. USB Device Port Mini-B USB device port.
GETTING STARTED External Power Port.
GDS-200 & GDS-300 Series User Manual BNC Panel CAT 1 CH1 input 300V 1M W 16.5pF 300Vrms MAX. 2 Tapped hole CH2 input CH1, CH2 Inputs Channel 1 and channel 2 BNC inputs. Input impedance: 1MΩ Input Capacitance: 16.5pF Max voltage: 300V max (CAT II) Tapped Hole 20 The tapped hole is used to secure the differential probe option to the GDS-200/300. See the differential probe manual for details.
GETTING STARTED Display Overview Horizontal Input frequency, trigger state.
GDS-200 & GDS-300 Series User Manual Vertical In order: Input frequency, trigger state, time, horizontal position, acquisition mode, trigger level, battery indicator. Drop down menu area Horizontal position indicator Channel indicators Horizontal scale Gesture control menu Trigger indicator Trigger mode Vertical scale Automatic measurements DMM measurement Hardcopy Run mode Autoset Input Frequency Displays the triggered signal frequency.
GETTING STARTED Horizontal Window Indicator Shows the current horizontal scale and position in relation to the record length. Drop Down Menu Area Tapping anywhere in the title bar will trigger the drop down menu. Gesture Control Menu The gesture control menu allows you to configure whether the touch gestures control the input waveforms or the cursors. This menu will also turn the cursor display on or off. Channel Indicators The channel indicator shows the vertical position of each active channel.
GDS-200 & GDS-300 Series User Manual Run Mode (Backward, Run/Stop, Forward, Single) Autoset 24 The Run/Stop key is used to start/stop acquiring samples. The Forward/Backward keys step backward/forward through each consecutively sampled waveform. The Single key puts the trigger into single mode. The Autoset function automatically configures the panel settings to position the input signal to the best viewing condition.
GETTING STARTED How to Use the Touch Interface Background Unlike other oscilloscopes or digital multimeters, the GDS-200 and GDS-300 Series have no physical hardware keys, therefore operation is completely controlled using the capacitive touch screen. Using a capacitive touch screen is a new interface paradigm for DSOs; the gestures and general user interface is easier to use and more intuitive than traditional DSO interfaces.
GDS-200 & GDS-300 Series User Manual Swipe Horizontally swipe on the screen. Scroll Drag your finger vertically on the screen to scroll. Pinch In Pinch the screen to zoom out (make the waveforms smaller), or spread your fingers apart to zoom in (make the waveforms larger).
GETTING STARTED Drag and drop Drop Drag Drag an item to an option and let go*. *The drag and drop gesture is usually used in the Horizontal, Vertical or Trigger menu to manually set a positional value.
GDS-200 & GDS-300 Series User Manual Help Menu Background If at any time you are not sure how to use a particular function, the help icon can be used to put an overlay on the screen to show the basic function of each icon. Steps Tap the title bar on the top of the LCD display to bring up the Drop Down menu. Tap on the Utility icon.
GETTING STARTED Tap on the Help option in the Utility menu. The help screen overlay is shown on the display. There are three help screens. Use the numbered icons, , , , to view the corresponding help screen. Use the exit icon to exit from the help screen.
GDS-200 & GDS-300 Series User Manual Initial Setup This chapter should be used to set up the instrument when used for the first time or if the firmware has been updated. Power Up Requirements Steps Before the unit is powered up for the first time, it is recommended that the unit is first fully charged. 1. Plug the AC-DC power pack into the mains outlet. 2. Connect the 12V plug into the 12V socket on the interface panel of the GDS-200/300. 3. The unit will begin charging.
GETTING STARTED 6. The battery indicator is shown on the top right-hand corner of the main display. USB Driver Installation Background Installation The GDS-200/300 has a USB device driver that should be installed to get the most out of the unit. 1. Turn off the GDS-200/300. 2. When the PC is on, connect the USB cable from the GDS-200/300 to the PC. 3. Turn the GDS-200/300 on. 4. Access the Menu tray by pressing the title bar. Go to Utility>USB device port and set the device port to Communication. 5.
GDS-200 & GDS-300 Series User Manual 7. The GDS-200/300 will now be recognized as a virtual com port (VCP). Tilting the Stand Horizontal Vertical 32 To tilt the stand horizontally, pull the catch from the smaller of the two stands. To tilt the stand vertically, release the catch from the larger of the stands.
GETTING STARTED Setting the System Date & Time Background The GDS-200/300 will keep the date and time settings saved so long as the battery is not allowed to fully discharge. 1. Access the Menu tray by tapping the title bar. 2. Press Utility>System>Date&Time. The Date&Time menu will appear. 3. To set the date, press Date and use the number picker to set the year, month and day. 4. To set the time, press Time and use the number picker to set the hour and minute. 5.
GDS-200 & GDS-300 Series User Manual Setting the Language Background The GDS-200/300 menu system can be set to display a number of languages. 1. Access the Menu tray by tapping the title bar. 2. Press Utility>System>Language. The Language menu will appear. 3. To set the language, press your preferred language. Switching Horizontal and Vertical View Background By default the GDS-200/300 is set to the vertical view. Switch View 1. Tap the title bar to access the Menu tray. 2.
GETTING STARTED 2. Set the probe attenuation to x10 on the probe. 3. Connect the probe to the 2V calibration signal. The calibration signal outputs a 1kHz, 2Vpp square wave signal. x10 x1 VW A 1 10A MAX FUSED mA 600mA MAX FUSED CAT II CAT III X10 COM 600V 300V X1 CH1 4. Press the 5. Select 6. Press the vertical icon. CH1, if it is not already selected. option icon. 7. Press Probe and set the probe to 10X. 8. Exit from the Vertical menu (tap anywhere outside the Vertical menu). 9.
GDS-200 & GDS-300 Series User Manual interpolation type. 13. Turn the adjust point on the probe until the probe is properly compensated.
OPERATION OPERATION Gesture Control ............................................................... 41 Select a Channel, Math or Reference Waveform ................................................. 41 Set the Vertical Position of the Selected Waveform ........................................... 42 Set the Vertical Scale of the Selected Waveform ................................................. 43 Set the Horizontal Position ..................................................................................
GDS-200 & GDS-300 Series User Manual Trigger Parameters and Settings ............................................................................ 69 Trigger Mode ............................................................................................................ 71 Forced Trigger.......................................................................................................... 72 Alternate Trigger ................................................................................................
OPERATION Acquire Menu ................................................................. 107 Accessing the Acquisition Menu.......................................................................... 107 Select Acquisition Mode ....................................................................................... 108 Show Waveform in XY Mode ............................................................................. 109 Set the Record Length................................................................
GDS-200 & GDS-300 Series User Manual Current Measurement ........................................................................................... 146 Resistance Measurement ....................................................................................... 147 Diode Measurement .............................................................................................. 149 Continuity Measurement.......................................................................................
OPERATION Gesture Control This chapter will go over all of the basic touch gestures that are available using the default settings. The touch gestures cover all the most frequently used operations that an engineer uses, allowing the GDS-200/300 to operate completely without panel keys or knobs. Note The gestures described below are only applicable if “Waveform” is selected as the gesture control method. See page 83 for details.
GDS-200 & GDS-300 Series User Manual Set the Vertical Position of the Selected Waveform Background The touch screen can be used to conveniently set the vertical position of the selected waveform. Steps Swipe the screen vertically to set the vertical position of the selected waveform. The vertical position will also be shown in a popup window. The waveform will automatically snap to the zero position at each crossing. To move past the zero position, use the swipe gesture again.
OPERATION Set the Vertical Scale of the Selected Waveform Background The touch screen can be used to conveniently set the vertical scale of the selected waveform. To set other vertical scale options, see from page 53 Steps Pinch in/out vertically to set the vertical scale of the selected waveform. A scale indicator will popup to show the current scale in relation to full vertical scale range.
GDS-200 & GDS-300 Series User Manual Set the Horizontal Position Background The touch screen can be used to conveniently set the horizontal position. Steps Swipe the screen horizontally to set the horizontal position of the displayed waveforms. The horizontal indicator is a solid orange triangle at the top to the grid. The horizontal position (as a value) is shown at the top of the grid. The waveform will automatically snap to the zero position at each crossing.
OPERATION Set the Horizontal Scale Background The touch screen can be used to conveniently set the horizontal scale of the displayed waveforms. To set other horizontal scale options, see page 60. Steps Pinch in/out horizontally to set the horizontal scale of the display. A scale indicator will popup to show the current scale in relation to full horizontal scale range. When the scale indicator appears, simply tapping the left or right-half of the screen will also change the horizontal scale.
GDS-200 & GDS-300 Series User Manual Select the Trigger Source and the Trigger Level Background The touch screen can be used to conveniently select the trigger source as well as set the trigger level. Select Trigger Source Tap on the trigger level indicator to toggle between trigger sources. Toggle trigger source Set the Trigger Level Swipe the screen to the right of the grid to set the trigger level with the currently selected source. The trigger level will also be shown in a popup window.
OPERATION Common Menu UI Elements This section will give a brief overview of some of the common UI elements that are used to select parameters and values in menus. Not all of the UI elements look the same but will have similar functions. User interface elements that are not shown below will be specifically shown in the user manual. Radio Check Boxes Background A radio checkbox allows a single option to be selected.
GDS-200 & GDS-300 Series User Manual Example Slider Preset value button Value Picker Background Value pickers are used to enter discrete values. They are usually accompanied by some common preset value buttons. Example Decrease value Preset value button Current value Increase value Keyboards and Keypads Background 48 Software keyboards and keypads are used to enter specific values. Keyboards are used to enter letters and numbers, such as making text notes or files names.
OPERATION Example: keypad Units keypad Delete Enter When using a keypad: Select the unit Enter the value using the keypad Press Enter to confirm the entered value. Example: Keyboard Text entry area Alphanumeric/Language/ symbol toggle Enter OK When using the keyboard: The text entry area will display the text that is entered. The +=# key will bring up a symbol keyboard The ABC/Language key will bring up the alphanumeric or native language keyboard. Press Enter to go to the next line.
GDS-200 & GDS-300 Series User Manual Vertical Menu Operation The vertical menu controls the vertical scale and position, channel activation, coupling, expansion modes and probe settings. Vertical Icon Overview Major settings that have been set in the vertical menu will be reflected in the Vertical icon.
OPERATION Entering the Vertical Menu Steps 1. Press the vertical icon to bring up the vertical menu. 2. The Vertical Menu appears. Vertical Menu Vertical icon Channel or Reference/Math Waveform Selection and Activation Turning a Channel On From the vertical menu press the icon of the desired channel, reference waveform or math waveform to turn the channel on or to select the channel as the active channel. When activated the channel icon will be colored.
GDS-200 & GDS-300 Series User Manual Example Selected/active channel Disabled channels Activated channels Vertical Scale and Position Background The vertical scale and position can be configured in the vertical menu in addition to the using the touch gestures. Touch Control Select the desired channel, reference waveform or math function. Note Menu Control Page 41 Position: When using touch control, the waveform will automatically snap to the zero position at each crossing.
OPERATION Drag and drop the Vertical position key to manually set vertical position Scale picker Position slider Vertical Position key Vertical Options – Channel Background Setup The Options menu in the Vertical menu allows you to set the coupling, invert waveforms, turn the bandwidth limit on, set the expansion mode and set the probe attenuation. 1. Select a channel by tapping on the corresponding channel icon. 2. Press the Options vertical options.
GDS-200 & GDS-300 Series User Manual Coupling DC, AC, GND Invert Press the Invert toggle switch to invert the waveform for the selected channel. Bandwidth Limit Press the Bandwidth Limit toggle switch to turn the bandwidth limit on or off. Bandwidth limit Expand 20MHz, Off 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.
OPERATION Note 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 position 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 waveform window. The ground level position will suit to match the signal position. Probe This menu sets the probe attenuation and the probe type.
GDS-200 & GDS-300 Series User Manual Vertical Options – Reference Waveforms Background Setup The Options menu in the Vertical menu allows you to view the selected reference waveform sample rate, record length and creation date. 1. Select a reference by tapping on the corresponding R1 or R2 icon. 2. Press the Options vertical options. Page 51 icon to bring up the The data for the selected reference waveform will be displayed.
OPERATION Setup 1. Select the math channel by selecting Page 51 the M icon. 2. Press the Options settings. icon to bring up the math Math waveform selected Math settings Math 1. Press the Math tab to reveal the math options. 2. From the Math tab select the sources and the math operator. Source 1 Operator Source 2 FFT CH1, CH2, Ref1, Ref2 +, - , ×, ÷ CH1, CH2, Ref1, Ref2 1. Press the FFT tab to reveal the FFT math options. 2. From the FFT tab select the source, units and FFT window function.
GDS-200 & GDS-300 Series User Manual Example Math waveform icon Math waveform Math details The Math icon can be expanded to show the sources, volt/div and offset of the Math function. Press the Math icon to toggle between the collapsed and expanded Math icon.
OPERATION Horizontal Position Background Menu Control The horizontal scale and position can be configured in the Horizontal menu in addition to the using the touch gestures. 1. Press the Horizontal key to access the Horizontal menu. 2. Press Main to set the scope to the main window mode. Horizontal menu Main window mode Horizontal scale Horizontal position Horizontal icon 3. From the Main horizontal menu the horizontal scale and position can be configured. 4.
GDS-200 & GDS-300 Series User Manual 7. To manually set the horizontal position, drag from the Horizontal Position key and drop to the keyboard icon. Type in the value for the horizontal position with the keypad that appears. Drag and drop the Horizontal Position key to manually set the horizontal position Scale picker Position slider Horizontal Position key Touch Control 1. Swipe the screen to set the horizontal Page 44 position. 2. Use a pinch gesture to increase or decrease the horizontal scale.
OPERATION By Trigger Position Steps Scales the waveform from the trigger position. 1. Access the Horizontal or Zoom menu. Page 59 or 63 2. Press the Options icon to bring up the Horizontal options menu. The expansion settings will be displayed. Horizontal options menu Expand settings 3. Choose the expansion type in the Expand menu that appears.
GDS-200 & GDS-300 Series User Manual Example: By Trigger Position Trigger Position Expand By Trigger 62
OPERATION Zoom Background Setup The Zoom menu can be accessed from the Horizontal menu. 1. Press the Horizontal key to access the Horizontal menu. 2. Press Zoom to set the scope to Zoom window mode. Horizontal menu Zoom scale Zoom position Horizontal icon 3. From the Zoom horizontal menu the zoom scale and zoom position can be configured.
GDS-200 & GDS-300 Series User Manual Menu Control 1. Use the scale picker to set the horizontal scale for the zoom window. 2. Use the position slider to set the horizontal position for the zoom window. 3. To set the zoom position to 0, drag from the Zoom Position key and drop to the “Set to 0” option. 4. To manually set the zoom position, drag from the Zoom Position key and drop to the keyboard icon. Type in the value for the zoom position with the keypad that appears.
OPERATION 2. The horizontal position of the zoom window can be moved by swiping the screen left or right. Zoom window Zoom horizontal position Note Position: In the main display, the zoom window will automatically snap to the zero position at each crossing. To move past the zero position, use the swipe gesture again.
GDS-200 & GDS-300 Series User Manual Trigger Menu Operation The Trigger menu controls the trigger position, trigger type and trigger modes. Trigger Icon Overview The settings that have been set in the Trigger menu will be reflected in the Trigger Menu Icon.
OPERATION Entering the Trigger Menu Steps 1. Press the Trigger menu. Trigger icon to bring up the 2. The Trigger menu appears.
GDS-200 & GDS-300 Series User Manual Trigger Setting Trigger Types The trigger configures the conditions for when the GDS-200/300 captures a waveform. 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 Pulse Width Triggers when the pulse width of the signal is less than, equal, not equal or greater than a specified pulse width.
OPERATION Trigger Parameters and Settings The following trigger parameters apply to all the trigger types unless stated otherwise. Mode Auto The GDS-200/300 generates an internal trigger if there is no trigger event, to make sure waveforms are constantly updated regardless of trigger events. Select this mode especially when viewing rolling waveforms at slower timebases. Normal The GDS-200/300 only acquires a waveform when triggered. (Single) Pressing the Single button will acquire a single waveform.
GDS-200 & GDS-300 Series User Manual Source 50% Sets the trigger level to 50% of the waveform amplitude. CH1, CH2 Channel 1 or channel 2 input. Coupling (Edge, DC Pulse only) AC Sets the coupling to DC. Slope (Edge only) Rising Trigger on rising edge. Falling Trigger on falling edge. Either Trigger on either rising or falling edge. Off Frequency rejection turned off. LFR Low frequency rejection. HFR High frequency rejection. NR Noise rejection Holdoff Holdoff Sets the holdoff time.
OPERATION Standard Trigger On When Pulse width (10ns - 10s) NTSC National Television System Committee PAL Phase Alternate by Line SECAM SEquential Couleur A Memoire Field1 Sets the trigger point to a line on field1 (odd). Field2 Sets the trigger point to a line on field2 (even). All Fields Trigger on all fields. All Lines Trigger on all lines. Trigger Mode Background The trigger mode can be set to Normal or Auto (untriggered roll). The triggering mode applies to all the trigger types.
GDS-200 & GDS-300 Series User Manual Forced Trigger Background If the input waveforms are not triggered, they can be force triggered using the Force Trigger button. From the Trigger menu, press the Force Trigger button. The scope will trigger immediately. Alternate Trigger Background The Alternate trigger allows the scope to trigger alternatively between CH1 and CH2. From the Trigger menu, press the ALT button. A check will indicate if the ALT function is active.
OPERATION Trigger Level Background Touch Control The trigger level can be set using touch gestures or from the trigger level. 1. Select the trigger source from the side of the graticule. 2. Swipe up and down from the right side of the graticule to set the trigger level for the selected trigger source. Menu Control 1. From the Trigger menu use the Trigger Level slider to set the trigger level. 2. To set the trigger level to 50%, drag from the Trigger Level button and drop to the “Set to 50%” option. 3.
GDS-200 & GDS-300 Series User Manual Edge Trigger Background Setup The Edge trigger allows you to acquire a waveform on a rising or falling edge. 1. Press the Edge button. Page 67 2. Press the Options icon to bring up the Trigger options for the Edge trigger. Edge Trigger Return Holdoff Source Level Coupling Slope Rejection 3. Select the appropriate parameters. See page 69 for a description of each parameter.
OPERATION Example 75
GDS-200 & GDS-300 Series User Manual Pulse Trigger Background Setup The Pulse trigger allows you to acquire a waveform on a rising or falling pulse of a defined width. 1. Press the Pulse button. Page 67 2. Press the Options icon to bring up the Trigger options for the Pulse trigger. Pulse trigger Return Trigger When Holdoff Source Coupling Polarity Rejection Trigger level 3. Select the appropriate parameters. See page 69 for a description of each parameter.
OPERATION Example Video Trigger Background Setup The Video trigger allows you to acquire PAL, NTSC and SECAM video signals. The GDS200/300 can trigger on any line or field. 1. Press the Video button. Page 67 2. Press the Options icon to bring up the Trigger options for the Video trigger. Video trigger Return Holdoff Source Standard Polarity Trigger On 3. Select the appropriate parameters. See page 69 for a description of each parameter.
GDS-200 & GDS-300 Series User Manual Source CH1, CH2 Standard NTSC, PAL, SECAM Positive, negative Trigger On Field 1 (line 1- 263), Field 2 (line 1 262), All Field, All Lines Polarity Level 0.00V, TTL(1.4V), ECL(-1.3V), 50% Holdoff 10ns - 10s Example Autoset Background Note The Autoset function will automatically choose the best timebase and vertical scale for the activated waveforms. The Fit Screen and AC Priority settings position the input signal to the best viewing condition.
OPERATION AC Priority Steps AC Priority mode will scale the waveform to the screen by removing any DC component. 1. From the main display press the Autoset key. 2. The waveform will appear on the display. 3. For a few seconds you will have the option to press Undo? to undo the autoset configuration. Autoset Mode 1. Long press Autoset to bring up the Autoset Mode menu. 2. Press the appropriate check-box to select Fit Screen or AC Priority.
GDS-200 & GDS-300 Series User Manual Run Mode The scope has three main running modes, Run, Stop and Single. Run mode continuously captures (triggered) waveforms in a FIFO buffer. Each waveform that is captured can be replayed when the scope is in the Stop mode. The number of waveforms that are captured depends on the sample rate and the memory length. Stop mode stops capturing waveforms and allows you to view any waveform that was previously captured in the Run mode.
OPERATION Run/Stop Mode Background By default the scope is in Run mode as soon as it is turned on. The Run/Stop key is shown in green when the scope is in Run mode and red when it is in Stop mode. Toggle Modes Record Navigation Press the Run/Stop key to toggle between Run and Stop modes. 1. Put the scope into Run mode (described above). 2. After the desired number of samples has been recorded, toggle the scope to Stop mode by pressing the Run/Stop key. 3.
GDS-200 & GDS-300 Series User Manual Example Trigger status Sample number Sample slider Single Mode Single Mode Simply press the Single key to set the scope to single trigger mode. The scope will capture a waveform when the trigger conditions are met. This is useful for intermittent signals.
OPERATION Cursor Measurements 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 or combined) are activated, they will be shown on the main display unless turned off. Using Cursors Background Steps The Gesture Control icon is used to toggle the touch screen controls between Waveform controls and Cursor controls.
GDS-200 & GDS-300 Series User Manual 4. Cursors will now appear on the display for the currently selected channel, 2 lined cursors for the Horizontal Cursor option and 4 lined cursors for the Combined Cursor option. 5. The cursor measurements will appear in a window in the top left-hand side. Horizontal: Cursor 1, 2 Time/frequency, voltage/current at crossing. Δ Delta (difference between cursors) dV/dt or dI/dt.
OPERATION 6. Pressing the cursor window will toggle the horizontal reading between frequency and time. Cursor Reading Moving the Cursors 7. To move the cursors horizontally, touch and swipe a cursor line horizontally to the desired position. 8. To move the cursors vertically, touch and swipe a cursor line vertically to the desired position. Horizontal cursor Vertical cursor 9. Return the Gesture Control back to Waveform after the cursors have been positioned. See step 2 above.
GDS-200 & GDS-300 Series User Manual Automatic Measurements Up to 4 automatic measurements can be calculated from the trigger configuration conditions each time a waveform is captured. The automatic measurements can be based on the entire record length, the area of the waveform displayed on-screen or from a gated region bound by the onscreen cursors. Measurement Types Amplitude Measurements Pk-Pk Max Difference between positive and negative peak. (=max − min) Positive peak. Min Negative peak.
OPERATION ROVShoot The root mean square value is calculated for all data samples within the first cycle found in the gated region. Measures the positive area of the waveform and subtracts it from the negative area. The ground level determines the division between positive and negative areas. The Summation based on all data samples within the first cycle found in the gated region. Rise overshoot. FOVShoot Fall overshoot. RPREShoot Rise preshoot. FPREShoot Fall preshoot.
GDS-200 & GDS-300 Series User Manual –Width Negative pulse width. Duty Cycle Ratio of signal pulse compared with whole cycle. =100x (Pulse Width/Cycle) +Pulses Measures the number of positive pulses. -Pulses Measures the number of negative pulses. +Edges Measures the number of positive edges. -Edges Measures the number of negative edges. Delay Measurement Time between: 88 FRR Source 1 first rising edge and Source 2 first rising edge.
OPERATION LFR Time between: Source 1 first falling edge and Source 2 last rising edge. LFF Time between: Source 1 first falling edge and Source 2 last falling edge. Phase The phase difference of two signals, calculated in degrees. t1 x 360 t2 Viewing Automatic Measurements Background There are two different display options for automatic measurements. A minimized and a maximized view*. The minimized view will display the real-time measurement results.
GDS-200 & GDS-300 Series User Manual Steps 1. Press the M (Measure) icon in the menu bar at the bottom of the display. 2. The minimized view will appear above the menu bar. 3. To toggle between the minimized and maximized view, tap anywhere within the area that the automatic measurements are displayed. 4. To remove the automatic measurements from the display*, press the M (Measure) icon again in the menu bar.
OPERATION Steps 1. Make sure the automatic measurements are visible at the bottom of the display. 2. From the Menu Bar: Long-press anywhere within the area that the automatic measurements are displayed to bring up the Measurement menu. OR From the Drop Down Menu: Press the top of the screen to access the drop down menu. From the Menu tray, select the Measure icon. Measure icon Long press 3. Select a measurement slot (from 1 of 4 quadrants). 4. Select a measurement category (Amplitude, Time, Delay).
GDS-200 & GDS-300 Series User Manual 5. Select an automatic measurement from the selected category. Tip: Tapping the bottom of the selection window will display the next group of automatic measurements for the category. 6. To select the source for the selected automatic measurement, long-press the measurement selection. Select the source from the submenu that appears.
OPERATION 2. Press the Options options menu. icon to bring up the 3. From the Options menu select the measurement gating: Off (Full Record), Screen, Between Gating Cursors 4. For Statistics, select the number of mean samples. The number of samples is used to calculate the Mean measurement for when the automatic measurements are displayed in the maximized mode.
GDS-200 & GDS-300 Series User Manual Drop-Down Menu The Drop-down menu is split into the Menu tray and the App tray. The Menu tray contains all the configuration settings and other miscellaneous functions not directly related to the operation. The App tray contains a number of EE apps that can be used as supplementary tools for the GDS-200/300. Opening the Drop-down Menu Background From the main screen, press the title bar to bring up the Drop-down menu. The Drop-down menu will be displayed.
OPERATION Steps Press the Default icon from the Menu tray. The default settings will be restored immediately. Panel Lock Background The panel lock can be used to prevent any settings from being inadvertently changed. Activate Panel Lock Press the Lock icon from the Menu tray. The panel lock will appear at the bottom of the screen. Disable Panel Lock Press and hold the Padlock icon.
GDS-200 & GDS-300 Series User Manual Utility Menu The Utility Menu configures a number of general system settings such as the System language, Hardcopy settings, USB device port settings, Calibration and other settings. Accessing the Utility Menu From the main screen, press the title bar to bring up the Drop Down menu. Press the Utility icon to show the Utility menu. Utility Menu tray App tray Set the Language Background The Language menu selects the system language.
OPERATION View System Information Background The system information displays the model name, serial number, firmware version, FPGA revision and GW Instek website address. A QR code for the serial number is also shown. Steps From the Utility menu, press System>System Information.
GDS-200 & GDS-300 Series User Manual Signal Path Compensation Background Note Steps Signal Path Compensation (SPC) is used to compensate the internal signal path due to ambient temperature and long term drift. SPC is able to optimize the accuracy of the oscilloscope with respect to the ambient temperature and signal drift. Ensure the scope has been warmed up for at least 10 minutes before performing signal path compensation. 1. From the Utility menu, press System>SPC. 2.
OPERATION Setting the System Date & Time Background The GDS-200/300 will keep the date and time settings saved so long as the battery is not allowed to fully discharged. 1. Press Utility>System>Date&Time. The Date&Time menu will appear. 2. To set the date, press Date and use the number picker to set the year, month and day. 3. To set the time, press Time and use the number picker to set the hour and minute. 4. Press OK to save the date and time settings.
GDS-200 & GDS-300 Series User Manual Touch Sounds Background When turned on, the Touch Sounds function will produce a buzzer sound when a button is pressed on the touch screen. By default the buzzer sound is turned off. Press Utility>System>Touch Sounds and toggle Touch Sounds on/off. Erase Memory Background The Erase Memory function will delete all waveform and setup files from the internal memory. Press Utility>System>Erase Memory and press OK to erase the memory.
OPERATION Steps 1. From the Utility menu, press Hardcopy and select the save function for the Hardcopy function. 2. The Hardcopy Save key can now be used to save the item configured with the Hardcopy function. 3. See the Save Operations and Recall Operations chapters for the file format details, see page 124&135.
GDS-200 & GDS-300 Series User Manual Configure USB Device Port Background Note Steps The setting, “USB device port” in the Utility menu determines whether the internal storage is seen as an internal or external drive. When set to Disk Drive, the internal storage can be accessed via a USB connection to a PC or via a USB OTG cable on a smart phone. When the USB device port is set to Communication, the unit can be used for remote control.
OPERATION Configure Autoset Mode Background There are two operating modes for the Autoset function: Fit Screen Mode and AC Priority Mode. Fit Screen Mode will fit the waveform to the best scale, including any DC components (offset). AC Priority mode will scale the waveform to the screen by removing any DC component. Steps From the Utility menu, press Autoset Mode and select the mode.
GDS-200 & GDS-300 Series User Manual Set Ruler Background The Ruler function adds a scale to the graticule. Note this mode only functions in the vertical view. See page 34 to set the display to the vertical mode. Steps From the Utility menu, press Ruler to toggle the Ruler function on/off.
OPERATION Calibration Background Steps The Calibration menu allows you to perform vertical calibration on the oscilloscope channels. 1. From the Utility menu, press Calibration>Vertical Calibration to start vertical calibration. 2. A prompt will appear asking you to connect the CAL output to CH1. 3. Connect the Vertical Calibration cable, GCL001, to the input in the restricted panel* on the interface panel and to CH1. *You may need to use a Philips head screwdriver to remove the panel.
GDS-200 & GDS-300 Series User Manual 5. Repeat the above steps for CH2. 6. Reset the scope when the calibration has finished.
OPERATION Acquire Menu The Acquire Menu sets the acquisition mode, channel mapping (XY mode), record length and the sample interpolation type. Accessing the Acquisition Menu From the main screen, press the title bar to bring up the Drop Down menu.
GDS-200 & GDS-300 Series User Manual Select Acquisition Mode Background The acquisition process samples the analog input signals and converts them into digital formats for internal processing. The acquisition mode determines how the samples are used to reconstruct a waveform. Modes 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.
OPERATION Show Waveform in XY Mode Background The XY mode maps the input of channel 1 to the input of channel 2. This mode is useful for observing the phase relationship between waveforms. XY mode can also be used with cursors, see page 83 to turn cursors on. Connection 1. Connect channel 1 to the X-axis source. 2. Connect channel 2 to the Y-axis source. CH2, Y-axis CAT 1 1M W 16.5pF 300Vrms MAX. 2 CH1, X-axis 3. Activate both channel 1 and channel 2. Steps 300V Page 41 1.
GDS-200 & GDS-300 Series User Manual Set the Record Length Background The number of samples that can be stored is set by the record length. Record length is important in an oscilloscope as it allows longer waveforms to be recorded and/or allows higher sampling rates to be achieved when equivalent time sampling is used. Record Length 1k 10k 100k 1M 5M Steps From the Acquire menu, press Record Length and select the record length.
OPERATION Set the Interpolation Background The GDS-200/GDS-300 has two types of interpolation modes: ET (Equivalent Time) and Sin(x)/x interpolation. Equivalent time sampling is able to achieve a sample rate of 20GSa/s when sampling periodic waveforms. Sin(x)/x interpolation uses a sinc interpolation formula to reconstruct a continuous signal between sampled points. Sin(x)/x Samples of data are used to reconstruct a single waveform.
GDS-200 & GDS-300 Series User Manual Display Menu The Display Menu defines how the waveforms and parameters appear on the display. Accessing the Display Menu From the main screen, press the title bar to bring up the Drop Down menu. Press the Display icon to show the Display menu Display Menu tray App tray Display the Waveform as Dots or Vectors Background Modes 112 When the waveform is displayed on screen, it can be displayed as dots or vectors. Dots: Only sampled dots are displayed.
OPERATION Vectors: Both the sampled dots and the connecting line are displayed. Steps From the Display menu press Type and select the display mode. Type Vectors, Dots Type Menu Set the Level of Persistence Background The Persistence function allows the GDS200/GDS-300 to mimic the trace of a traditional analog oscilloscope. A waveform trace can be configured to “persist” for a designated amount of time.
GDS-200 & GDS-300 Series User Manual Set the Waveform Intensity Background The intensity level of a signal can also be set to mimic the intensity of an analog oscilloscope by setting the digital intensity level. Steps From the Display menu press Waveform Intensity and select the intensity level.
OPERATION Set the Graticule Intensity Background The graticule intensity level can also be configured. Steps From the Display menu press Graticule Intensity and select the intensity level.
GDS-200 & GDS-300 Series User Manual Set the Graticule Type Background There are 4 types of selectable graticule. Steps From the Display menu press Graticule and select the graticule 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.
OPERATION Set the Brightness Level Background The Brightness menu sets the display brightness and the display power management, known as ECO mode. ECO mode turns the brightness down after a set amount of time until the display is touched again. Steps From the Display menu press Brightness and select the brightness level and set the ECO mode time.
GDS-200 & GDS-300 Series User Manual Go-NoGo Menu A Go-NoGo test checks if a waveform fits inside a user-specified maximum and minimum boundary. Boundary templates can be automatically created from a source channel or created manually using the touch screen. Boundary tolerances and violation conditions can also be set. Accessing the Go-NoGo Menu From the main screen, press the title bar to bring up the Drop Down menu.
OPERATION Violating Enter Sets the NoGo condition to when the input signal stays within the limit boundary. Exit Sets the NoGo condition to when the input signal exceeds the limit boundary. 3. Press Violating to set the NoGo Action. This setting determines the action of the scope when the NoGo When setting is true. Stop The waveform stops when the conditions are violated. Stop Beep The waveform stops and a beep will be output when the conditions are violated.
GDS-200 & GDS-300 Series User Manual Save Template Max/Min Individually sets the offset for the upper and lower templates. These are based on the ground level of the source channel. Auto Sets the tolerance for the upper and lower template an equal distance from the source channel. This is set to 0.4% by default. 7. To save or recall a template, press the Option button when in the Template Edit menu.
OPERATION Save Template Max/Min Example Saves both the upper and lower template to R1 and R2 respectively.
GDS-200 & GDS-300 Series User Manual Running a Go-NoGo Test Background The Go-NoGo controls are located at the bottom left-hand corner of the screen. The Fail/Total ratio (Violations/Number of Tests) is shown in the title bar. Fail/Total ratio Go-NoGo controls Run Go-NoGo Test 1. Toggle the Go-NoGo button from pause to play. → The test will run continuously until the test is stopped. Pressing the Go-NoGo button again will stop the test and toggle the button back to pause.
OPERATION Results 2. When Go-NoGo is running, the Fail/Total ratio is displayed in the title bar. The first digit represents the number of failed tests, and the second digit represents the number of tests. When the test has stopped the scope goes into the Stop mode (page 81) allowing you to step though each acquisition with the Go-NoGo template overlay. Reset Go-NoGo 3. To reset the Go-NoGo test, press the Reset button Exit Go-NoGo Testing . 4. To exit from Go-NoGo testing press the Exit button .
GDS-200 & GDS-300 Series User Manual Save Operations The Save function configures the save file destination, file format and in the case of image files, the on-screen items that should be saved. Note When connected to a PC, files can only be saved if the USB mode is configured to “Communication”. See page 102 for details. Accessing the Save Menu From the main screen, press the title bar to bring up the Drop Down menu. Press the Save icon to show the Save menu.
OPERATION Saving and Configuring Image Files Background Image files can be saved to the internal memory in a number of file formats. Custom notes can also be saved with the image file. The brief mode allows Custom notes can also be attached to image files or on-screen items such as automatic measurements and trigger positions can be saved as extra data in the image file using the Brief Mode. Image File Items Destination Selects the save file destination. File Format Selects the image file format.
GDS-200 & GDS-300 Series User Manual File Manager Goes to the file manager to set the save-file path or to create new folders. See page 139 for details on using the file manager. Rename By default, files are saved in the format DSXXXX.PNG, where XXXX is a number starting at 0001 that is incremented each time an image file is saved. This default save-filename can be changed using the Rename option. This option will allow you to rename the default file name using the on-screen keyboard.
OPERATION Brief Mode Brief mode adds a series of user-selectable data to the bottom of an image file. It also reverts the normally black background into a white background for easy printing. 7. Toggle Brief Mode on. 8. Press Brief Mode Setting to set what data gets saved to the image file: Date&Time Saves the date and time. Vertical Saves the vertical scale, coupling, DC mode and bandwidth limit of all the active channels. Horizontal Saves the horizontal position and scale.
GDS-200 & GDS-300 Series User Manual 9. To preview the image file before saving, press the Preview button. Example Image File with Brief Mode = On Cursor Measure Image tab Cursor Date&Time, Vertical, Horizontal, Trigger Note Measurement Saving and Configuring Waveform Files Background Each displayed waveform can be saved either separately or together in a folder for later recall. Waveforms can be saved from any of the source channels, reference channels or math waveform.
OPERATION Waveform tab Save button From 3. Use the From option to select the source waveform: 1 Channel 1 2 Channel 2 M Math source R1 Reference waveform 1 R2 Reference waveform 2 All Displayed Saves all the displayed waveforms into a directory, ALXXXX, where XXXX is a number that is incremented each time a save is performed. Destination 4.
GDS-200 & GDS-300 Series User Manual 5. If All Displayed waveforms are to be saved, then the following destination options are available: File Manager Pressing File will allow you to change the file path from the root directory of the internal disk. Rename File Format Note Adding Notes Pressing Rename will allow you to rename the default directory from ALXXXX. 6. Press File Format to select the save file format: LSF Internal file format. This format saves and recalls waveforms the fastest.
OPERATION For example if the waveform is saved as DS001.lsf then the note will be saved as DS001_LSF.txt. Saving and Configuring Setups Background Setup files can be saved so that the instrument state can be recalled at a later time. Setup File Items Destination Save Setup Selects the save file destination. 1. From the Save menu, press the Setup tab. 2. To save, press the Save button at the bottom of the Setup tab. The file will be saved into the configured destination.
GDS-200 & GDS-300 Series User Manual File 132 Pressing File will allow you to either set the file path or rename the file from the default of DSXXXX.SET, where XXXX is a number that is incremented each time the waveform is saved.
OPERATION Saving and Configuring Images, Waveforms and Setups All at Once Background Images, Waveforms and Setup files can all be saved at the same time into a directory at the same time using the All option. All File Contents All the files are saved, by default, to a directory named AXXXX, where XXXX is a number that is incremented each time a save operation is performed. Save All AXXXX.PNG Image file AXXCH1/2.LSF Waveform save file DSXXXX.SET Setup up file 1.
GDS-200 & GDS-300 Series User Manual File Manager Goes to the file manager to set the save-file path or to create new folders. See page 139 for details on using the file manager. Rename 134 By default, files are saved into a directory called AXXXX, where XXXX is a number starting at 0001 that is incremented each time a save operation is performed. This option will allow you to rename the default directory name using the onscreen keyboard.
OPERATION Recall Operations The Recall function configures the save file destination, file format and in the case of image files, the on-screen items that should be saved. Note Files can only be recalled if the USB port is configured to “Communication”. See page 102 for details. Accessing the Recall Menu From the main screen, press the title bar to bring up the Drop Down menu. Press the Recall icon to show the Recall menu.
GDS-200 & GDS-300 Series User Manual Waveform Recall Items From To File Format Selects the source waveform. Selects the destination to recall to. Selects the file format to recall. Recall Waveform 1. From the Recall menu, press the Waveform tab. 2. To recall, press the Recall button at the bottom of the Waveform tab. The waveform will be recalled from the configured file path/source and recalled to one of the reference waveforms. See below for configuration details. Waveform tab Recall button From 3.
OPERATION File Format Note View & Edit Notes 5. Chooses the file format that is to be recalled. This option will determine whether *.LSF or *.CSV files are shown in the From option. LSF Internal file format. CSV Comma separated values. Fast CSV files can only be recalled if the record length is 1k or 10k. If a note for the selected file has been saved, the Note option will display the contents of the note. Pressing the Note option will allow you to edit the note. 6. Press Note.
GDS-200 & GDS-300 Series User Manual Recalling Setups Background Setup files can be recalled from the internal Set (setup) memories or from the internal disk. Setup Recall Items From Recall Setup Selects the source setup. 1. From the Recall menu, press the Setup tab. 2. To recall, press the Recall button at the bottom of the Setup tab. The setup will be recalled from the configured source. See below for the configuration details. Setup tab Recall button From 3.
OPERATION File Manager The file manager is used to navigate the internal file system, create new folders or to delete files. Accessing the File Manager From the main screen, press the title bar to bring up the Drop Down menu. Press the File Manager icon to show the File Manager.
GDS-200 & GDS-300 Series User Manual Navigating the File System Background The following diagram will show the file manager functions. File path/file size Home button Back button Files in system Save screen shot New Folder 140 MultiDelete Exit Home button Goes back to the root directory. Back button Goes back to the previous directory. Save screen shot Saves a screen shot of the file manager. New Folder Creates a new folder. MultiDelete Allows you to delete multiple files at the once.
OPERATION Navigation 1. Scroll up and down to view files that are out of view. 2. Select a folder to enter a directory. 3. Press the Back button to return to the previous directory. Selecting an image file will allow you to preview the image. Selecting a text(note) file will preview the message. Selecting an *.UPG (upgrade) file will allow you to upgrade the firmware. Create Folder 4. Press the New Folder button to create a new file. Enter the name of the new folder using the popup keyboard.
GDS-200 & GDS-300 Series User Manual Exit 142 Press Exit to exit from the file system.
OPERATION DMM Mode The DMM function can be used simultaneously with the DSO function. The DMM function is a basic digital multimeter. By default the DMM measurements are hidden in landscape mode. In the vertical display mode the DMM functions and measurements are displayed on the bottom of the screen automatically. Accessing the Multimeter There are two methods to access the DMM. Most of these instructions assume that the scope is in the vertical mode. See page 34 to switch to the vertical mode.
GDS-200 & GDS-300 Series User Manual Second Method: Vertical Orientation: Press and hold the DMM area for a short while to directly bring up the multimeter settings. Multimeter settings Hold DMM area Horizontal Orientation: Press the Measure button to reveal the DMM area*. Press and hold the DMM area for a few seconds to bring up the multimeter settings. *The DMM area can be expanded/collapsed by pressing once on the DMM area.
OPERATION Multimeter Display Overview The DMM display will show the measurement mode, max, min and current measurement, and a trend plot (vertical view only) of the last 120 measurements. Please note that in the horizontal view, the DMM display is only fully shown in the expanded view, see above for details.
GDS-200 & GDS-300 Series User Manual 2. The selected mode will be previewed in the lower corner. Multimeter settings VAC and VDC keys Preview screen 3. Press anywhere outside of the multimeter settings area to return to the main display. DMM mode Example Hold on/off Max Min Voltage measurement Current Measurement Back Ground Digital Storage Oscilloscope GDS-220 200 MHz 1GSa/s The GDS-200/300 can measure AC and DC current from two input terminals, depending on the current range.
OPERATION Steps 1. From the multimeter settings choose ACA, ACmA, DCA or DCmA. Ensure that no more than the 600mA is input into the mA port. ACA = ACmA = DCA = DCmA = 2. The selected mode will be previewed in the lower corner. Multimeter settings ACA and DCA keys Preview screen Note 108 180 Ensure that no more than 600mA is input into the mA port. Failure to do so will blow the fuse. See page 176 to replace the fuse. 3.
GDS-200 & GDS-300 Series User Manual Connection A mA VW COM 600mA MAX FUSED CAT II CAT III 600V 300V 10A MAX FUSED COM Steps VW 1. From the multimeter settings choose the resistance measurement. Resistance = 2. The selected mode will be previewed in the lower corner. Multimeter settings Resistance key Preview screen 3. Press anywhere outside of the multimeter settings area to return to the main display.
OPERATION Diode Measurement Back Ground Digital Storage Oscilloscope GDS-220 200 MHz 1GSa/s The diode test checks the forward bias characteristics of a diode by running a constant forward bias current through the DUT and measuring the forward voltage drop. Connection A mA VW COM 600mA MAX FUSED CAT II CAT III 600V 300V 10A MAX FUSED COM Steps VW 1. From the multimeter settings choose the diode measurement. Diode = 2. The selected mode will be previewed in the lower corner.
GDS-200 & GDS-300 Series User Manual Note Example Ensure the diode polarity is correct before performing the diode measurement. DMM mode Hold on/off Diode measurement Continuity Measurement Back Ground Digital Storage Oscilloscope GDS-220 200 MHz 1GSa/s The continuity test checks that the resistance in the DUT is low enough to be considered continuous (of a conductive nature). The continuity threshold level is set to <15Ω.
OPERATION 2. The selected mode will be previewed in the lower corner. Multimeter settings Continuity key Preview screen 3. Press anywhere outside of the multimeter settings area to return to the main display. 4. The approximate resistance will be displayed when there is continuity present in the connection. OPEN will be displayed if continuity is not present.
GDS-200 & GDS-300 Series User Manual Temperature Measurement Back Ground The GDS-300 can measure temperature using a thermocouple. To measure temperature, the DMM accepts a thermocouple input and calculates the temperature from the voltage fluctuation. The thermocouple type is taken into consideration. Temperature measurement is only supported on the GDS-300. Digital Storage Oscilloscope GDS-220 Note 200 MHz 1GSa/s Please see the specifications on page 184 for the thermocouple specifications.
OPERATION 3. The selected mode will be previewed in the lower corner. Multimeter settings Thermocouple type Preview screen Temperature key/toggle temperature unit 4. Press anywhere outside of the multimeter settings area to return to the main display.
GDS-200 & GDS-300 Series User Manual EE APPs The GDS-200/300 has a number of handy engineering apps built-in. The following apps are available by default: Attenuation Calculator, Resistance Calculator, Calculator, Advanced DMM, Template Editor and QR-Code Link. Accessing the EE Apps From the main screen, press the title bar to bring up the Drop Down menu. Press the App tray to show the EE Apps menu tray.
OPERATION Attenuation Calculator Background The attenuation calculator calculates the resistor values of 5 common attenuator circuits. The only input required is the attenuation required (dB), the system impedance (Z0) and the resistor accuracy (Standard E6 - E192). Example System impedance Z0 Attenuator type Desired attenuation Ideal resistance Resistor standard Find Resistor key Steps High choice Low choice 1. From the EE Apps tray select the Attenuation Calculator icon. 2.
GDS-200 & GDS-300 Series User Manual 5. Press Calculate. This will calculate the exact resistance values required for the desired attenuation and system impedance 6. Press the EXXX button to select the resistor standard. 7. Press Find Resistor to find the resistors that most closely match the ideal resistance values calculated in step 5. The best high and best low resistors are shown along with the percentage offset from the ideal value.
OPERATION Note Select Measurement Please see the DMM chapter for details on the different measurement modes and connections. See from page 143. 1. From the EE Apps tray select the Advanced DMM icon. 2. From the measurement selection wheel select the measurement type. 3. The current measurement, minimum and maximum measurement will be shown as soon as the measurement type is selected. Logging 4. Data is automatically logged as soon as a measurement function is selected.
GDS-200 & GDS-300 Series User Manual Calculator Background Example The Calculator function is a convenient scientific calculator especially suited to electronic calculations. Entered equation Answer area Keypad Steps 1. From the EE Apps tray select the Calculator app. 2. Using the keypad, enter the desired equation. The equations follow standard order of operations. The equation will appear on the top lefthand side. 3.
OPERATION QR Code Link App Background The QR Code Link app displays QR codes for commonly used websites relating to the GDS200/300. The GW Instek webpage is included as an example. To use the QR Code Link app, download a QR code reader app for your smartphone and read the QR codes from the QR Code Link app. Example QR Code QR Code Options Resistance Calculator Background The resistance calculator can calculate the value of a resistor based on the band code.
GDS-200 & GDS-300 Series User Manual 2. Press the Color Code button for standard pintype resistors. 3. Select the 4 band or 5 band tab. 4. Press each of the colored bands in succession and choose the appropriate color for each band from the pop-up window. 5. Press Calculate to calculate the value of the resistor. Example: Color Code Color code button 4 bands 5 bands Calculate button Color bands Resistance value SMD Resistor Values 1.
OPERATION SMD 3-digit/4-digit code EIA-96 2%, 5%, 10% 4. Press the SMD code button and enter the SMD code in the pop-up window. 5. Press Calculate to calculate the value of the SMD resistor. Example: SMD SMD code SMD button 3-digit/ 4-digit code 2%, 5%, 10% Calculate button Resistance value EIA-96 Template Editor Background The Template Editor function can be used for Go-NoGo testing.
GDS-200 & GDS-300 Series User Manual Example Edit window Template offset from source ground Steps Template Source template 1. From the EE Apps tray select the Template Editor icon. 2. Select “Draw New Template” or “Load template from…”. Draw New Template Draw a template freehand Load Template from… Uses a previously saved waveform as a template 3. Select a source channel and press Next. 4.
OPERATION left and right to position the green edit window and press the Edit button. Each point within the edit window can now be edited to a fine scale by drawing on the screen. Press OK when done. 7. To smooth the template press the Smooth button. Points will be removed to smooth the template. 8. To save the template, press the Save button. Choose to save the template to Ref1, Ref2 or as an *.LSF file. 9.
GDS-200 & GDS-300 Series User Manual REMOTE CONTROL CONFIG This chapter describes basic configuration for remote control. For a command list, refer to the programming manual downloadable from the GWInstek website, www.gwinstek.com Interface Configuration .................................................. 165 Configure USB Interface ...................................................................................... 165 Remote Control Function Check ......................................................
REMOTE CONTROL CONFIG Interface Configuration The GDS-200/300 uses the USB device port for remote control. When using the remote control function, the GDS-200/300 acts as a virtual COM port (VCP). Note New drivers can be downloaded from the GW Instek website, www.gwinstek.com.
GDS-200 & GDS-300 Series User Manual Remote Control Function Check Functionality check Invoke a terminal application such as Realterm. In the terminal program, set the COM port, baud rate, stop bit, data bit and parity to match the settings for the virtual COM port of the DSO. To check the COM settings of the DSO in Windows, see the Windows Device Manager. For example, in WinXP go to the Control panel → System → Hardware tab.
REMOTE CONTROL CONFIG Using Realterm to Establish a Remote Connection Background Realterm is a terminal program that can be used to communicate with a device attached to the serial port of a PC or via an emulated serial port via USB. The following instructions apply to version 2.0.0.70. Even though Realterm is used as an example to establish a remote connection, any terminal program can be used that has similar functionality. Note Realterm can be downloaded on Sourceforge.net free of charge.
GDS-200 & GDS-300 Series User Manual The baud rate, stop bit and parity settings can be viewed by right-clicking the connected device and selecting the Properties option. 4. Start Realterm on the PC as an administrator. Click: Start menu>All Programs>RealTerm>realterm Tip: to run as an administrator, you can right click the Realterm icon in the Windows Start menu and select the Run as Administrator option.
REMOTE CONTROL CONFIG 5. After Realterm has started, click on the Port tab. Enter the Baud, Parity, Data bits, Stop bits and Port number configuration for the connection. The Hardware Flow Control and Software Flow Control options can be left at the default settings. Press Open to connect to the GDS-200/300.
GDS-200 & GDS-300 Series User Manual 6. Click on the Send tab. In the EOL configuration, check on the +CR and +LF check boxes. Enter the query: *idn? Click on Send ASCII. 7. The terminal display will return the following: GW, GDS-310, XXXXXXX,VX.XX (manufacturer, model, serial number, version) 8. If Realterm fails to connect to the unit, please check all the cables and settings and try again.
FAQ FAQ • I connected the signal but it does not appear on the display. • I want to remove the measurement or FFT results from the display. • The waveform does not update (frozen). • The probe waveform is distorted. • Autoset does not catch the signal well. • The date and time settings are not correct. • The accuracy does not match the specification. I connected the signal but it does not appear on the display. Make sure you have activated the channel by accessing the vertical menu.
GDS-200 & GDS-300 Series User Manual The waveform does not update (frozen). Press the Run/Stop key to unfreeze the waveform. See page 80 for details. If this does not help, the trigger mode might be set to Single. Press theRun/Stop key to change out from Single mode. The probe waveform is distorted. You might need to compensate the probe. For details, see page 34. Autoset does not catch the signal well. The Autoset function cannot catch signals under 30mV or 20Hz.
APPENDIX APPENDIX The Appendix contains basic maintenance, miscellaneous information and the device specifications. Firmware Update ............................................................ 175 Fuse Replacement .......................................................... 176 Resistor Standards ......................................................... 177 Resistor Standards.................................................................................................. 177 Standard Resistor Code .......
GDS-200 & GDS-300 Series User Manual DMM Specifications .............................................................................................. 183 Basic ........................................................................................................... 183 DC Voltage ............................................................................................... 183 DC Current ............................................................................................... 183 AC Voltage ......
APPENDIX Firmware Update Background The GDS-200/GDS-300 firmware can be upgraded by copying the new firmware to the internal memory and installing it. New firmware can be downloaded on the GW Instek website. 1. From the Utility menu set the USB device port to Disk Drive. See page 102 for details. 2. The GDS-200/300 will be accessible to the windows file explorer. Copy the firmware file to the root directory of the GDS-200/GDS-300. 3.
GDS-200 & GDS-300 Series User Manual Fuse Replacement Background Steps The GDS-200/300 has fuse protection for both current ports, a 10A and a 1A fuse. Fuse Type 1A: T1A 500V 10A: T10A 500V 1. Turn the power switch off on the GDS-200/300. 2. Remove the 4 screws that hold the back panel in place. 3. Remove the back panel carefully. You will need a case opening tool to pry open the case after the screws are removed. Note: the fan wiring is connected to the back panel. 4.
APPENDIX Resistor Standards Resistor Standards Standard E6 E12 E24 Tolerance 20% 10% 5% Standard E48 E96 E192 Tolerance 2% 1% 0.5% Standard Resistor Code Standard resistors use colored bands to represent the value of the resistor. To read 4-colored bands, the first two digits represent the base value, the third is a multiplier and the last band is the tolerance. For a 5-colored band, the first 3 digits represent the base value, the 4th digit is the multiplier and the last digit is the tolerance.
GDS-200 & GDS-300 Series User Manual 3 or 4 Digit SMD Resistor Standards For 3 or 4 digit SMD codes, the first 2 or 3 digits represent the base value and the last digit represents the multiplier. The letter R is used as a decimal point. Example1: The code 220 equals 22Ω. Example2: The code 12R0 equals 12.0Ω. EIA-96 Code The EIA-96 standard is a 3 letter code. The first 2 digits codify a base value and the last digit is a letter that codifies a multiplier. EIA-96 code is used for tolerances of 1%.
APPENDIX Multiplier Letter Code Multiplier Letter Code Multiplier F E D C 105 104 103 102 B A X or S Y or R 101 100 10-1 10-2 Example: 01A = 100Ω 2%, 5%, 10% Code A variation to the EIA-96 standard is also used for tolerances of 2%, 5% or 10%. This variation also uses a 3 letter code. The first digit codifies the multiplier and the last two digits codify the base value. Multiplier The multiplier is the same as the EIA-96 standard.
GDS-200 & GDS-300 Series User Manual GDS-200/300 Default Settings The following default settings are the factory configuration settings for the GDS-200/300. To return the factory default setting, press the Default icon from the Drop Down menu. See page 94 to access the Drop Down menu.
APPENDIX GDS-200/300 Specifications The specifications apply when the GDS-200/GDS-300 is powered on for at least 30 minutes. Scope Specifications Vertical Channel Input Impedance Maximum Input Input Coupling Bandwidth Rise Time Sensitivity Accuracy Bandwidth Limit Polarity Offset Position Range 2 (BNC-Shield) 1MΩ CATII 300VRMs AC, DC, GND DC-70/100/200MHz (-3dB) <5ns / 3.5ns / 1.75ns approx. 2mV/div-10V/div (1-2-5 increments) ±(3% x Readout + 0.
GDS-200 & GDS-300 Series User Manual Sensitivity DC - 25MHz: approx. 0.5div or 5mV 25MHz - 70/100/200MHz: approx. 1.5div or 15mV Horizontal Range Roll Pre-Trigger Post-Trigger Accuracy 5ns-100s/Div (1-2-5 increments) 100ms/div - 100s/div 10 div max.
APPENDIX Display Type Display Resolution Display Orientation Backlight Control Touch Panel 7 Inch 480 x 800 Landscape and Portrait Manual adjustable & ECO mode Capacitive Power Adapter Line Voltage DC Output AC 100V-240V, 47-63Hz, Power Consumption 40W 12V/3A, double shielded wire cable Dimensions and Weight Weight Dimensions 1.5kg HxWxD(mm) 240.2mm x 136.0mm x 59.
GDS-200 & GDS-300 Series User Manual AC Voltage Range Accuracy 50mV, 500mV, 5V, 50V, 700V 5 ranges 50mV, 500mV, 5V, 50V, 700V ±(1.5% + 15 digits) at 50Hz1kHz AC Current* Range Accuracy 50mA, 500mA, 10A 3 ranges 50mA, 500mA, ±(1.5% + 15 digits) at 50Hz-1kHz 10A ±(3% + 15 digits) at 50Hz-1kHz * Measure range: >10mA Resistance* Range Accuracy 500Ω, 5kΩ, 50kΩ, 500kΩ, 5MΩ, 5 range 500Ω, 5kΩ, 50kΩ, 500kΩ ±(0.3% + 3 digits) 5MΩ ±(0.
APPENDIX GDS-200/300 Dimensions CAT 300V 1M W 16.5pF 300Vrms MAX. 1 2 Digital Storage Oscilloscope GDS-220 200 MHz 1GSa/s 240.2 A mA COM 600mA MAX FUSED CAT II CAT III VW 600V 300V 10A MAX FUSED 136.0 59.
GDS-200 & GDS-300 Series User Manual 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.
INDEX INDEX Accessories ................................. 14 Advanced DMM ...................... 156 Amplitude measurements ........ 86 Area measurements ................... 87 Attenuation calculator ............ 155 Autoset configuration ............. 103 Battery Safety instruction ............................ 8 BNC Panel .................................. 20 Brightness ................................. 117 Buzzer ....................................... 100 Calculator .................................
GDS-200 & GDS-300 Series User Manual Channel selection ......................... 51 Cursor operation .......................... 83 Display ......................................... 112 Display dots................................. 112 Display vectors ........................... 112 Drop-down menu ......................... 94 Edge trigger ................................... 74 Force trigger .................................. 72 Gesture control ............................. 41 Horizontal expansion ...........
