User Manual

ManualsBrandsGW Instek ManualsBenchtop OscilloscopesOscilloscope, 2x 100MHz, 25GSPS

Digital Storage Oscilloscope

GDS-1000A-U Series

USER MANUAL

GW INSTEK PART NO. 82DS-112AUEA1

ISO-9001 CERTIFIED MANUFACTURER

Summary of content (151 pages)

PAGE 1
Digital Storage Oscilloscope GDS-1000A-U Series USER MANUAL GW INSTEK PART NO.
PAGE 2
April 2011 edition This manual contains proprietary information, which is protected by copyright. All rights are reserved. No part of this manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will Corporation. The information in this manual was correct at the time of printing.
PAGE 3
TABLE OF CONTENTS Table of Contents SAFETY INSTRUCTIONS .................................. 8 Safety Symbols ....................................................................... 8 Safety Guidelines .................................................................... 9 Power cord for the United Kingdom .................................... 12 GETTING STARTED ........................................ 13 Main Features ................................................................... 13 Panel Overview .....
PAGE 4
GDS-1000A-U Series User Manual Trigger key 2/6 ..................................................................... 37 Trigger key 3/6 ..................................................................... 38 Trigger key 4/6 ..................................................................... 38 Trigger key 5/6 ..................................................................... 39 Trigger key 6/6 ..................................................................... 39 Utility key 1/11 (Utility #1) ......
PAGE 5
TABLE OF CONTENTS Edit: Template (boundary) ................................................... 69 Run Go-NoGo Tests ............................................................. 73 Data Logging ..................................................................... 74 Overview ............................................................................... 74 Edit: Source .......................................................................... 75 Edit: Setup Parameters .....................................
PAGE 6
GDS-1000A-U Series User Manual System Settings ............................................................... 107 Viewing the system information ........................................ 107 Selecting the language ....................................................... 107 SAVE/RECALL .............................................. 109 File Structures ................................................................. 109 Display image file format ...................................................
PAGE 7
TABLE OF CONTENTS The oscilloscope will not allow a 2M waveform to be saved. ............................................................................................ 139 APPENDIX .................................................... 140 Fuse Replacement ........................................................... 140 GDS-1000A-U Series Specifications ................................. 141 Model-specific specifications ............................................. 141 Common specifications ................
PAGE 8
GDS-1000A-U Series User Manual SAFETY INSTRUCTIONS This chapter contains important safety instructions that should be followed when operating and storing the oscilloscope. Read the following before any operation to ensure your safety and to keep the oscilloscope in the best condition. Safety Symbols These safety symbols may appear in this manual or on the oscilloscope. WARNING Warning: Identifies conditions or practices that could result in injury or loss of life.
PAGE 9
SAFETY INSTRUCTIONS Do not dispose electronic equipment as unsorted municipal waste. Please use a separate collection facility or contact the supplier from which this instrument was purchased. Safety Guidelines General Guideline CAUTION • Make sure the BNC input voltage does not exceed 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 heavy objects on the oscilloscope.
PAGE 10
GDS-1000A-U Series User Manual Power Supply WARNING Fuse WARNING Cleaning the oscilloscope Operation Environment • AC Input voltage: 100 ~ 240V AC, 47 ~ 63Hz • The power supply voltage should not fluctuate more than 10%. • Connect the protective grounding conductor of the AC power cord to an earth ground. • Fuse type: T1A/250V • To ensure fire protection, replace the fuse only with the specified type and rating. • Disconnect the power cord before replacing the fuse.
PAGE 11
SAFETY INSTRUCTIONS (Pollution Degree) EN 61010-1:2001 specifies pollution degrees and their requirements as follows. The oscilloscope falls under degree 2. Pollution refers to “addition of foreign matter, solid, liquid, or gaseous (ionized gases), that may produce a reduction of dielectric strength or surface resistivity”. • Pollution degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has no influence. • Pollution degree 2: Normally only non-conductive pollution occurs.
PAGE 12
GDS-1000A-U Series User Manual Power cord for the United Kingdom When using the oscilloscope in the United Kingdom, make sure the power cord meets the following safety instructions.
PAGE 13
GETTING STARTED GETTING STARTED The Getting started chapter introduces the oscilloscope’s main features, appearance, and set up procedure.
PAGE 14
GDS-1000A-U Series User Manual Interface 14 • Compact size: (W) 310 x (D) 140 x (H) 142 mm • Probe factor from 0.1X~2000X voltage/current • USB 2.
PAGE 15
GETTING STARTED Panel Overview Front Panel LCD display TFT color, 320 x 234 resolution, wide angle view LCD display. Activates the functions which appear in the left side of the LCD display. Function keys: F1 (top) to F5 (bottom) Variable knob VARIABLE Increases or decreases values and moves to the next or previous parameter. Acquire key Acquire Configures the acquisition mode (page 78). Display key Display Configures the display settings (page 83).
PAGE 16
GDS-1000A-U Series User Manual Utility key Utility Configures the Hardcopy function (page 115), shows the system status (page 107), selects the menu language (page 107), runs the self calibration (page 134), configures the probe compensation signal (page 135), and selects the USB host type(page 104). Help key Help Shows the Help contents on the display (page 46). Autoset key Autoset Automatically configures the horizontal, vertical, and trigger settings according to the input signal (page 48).
PAGE 17
GETTING STARTED Trigger force key FORCE Acquires the input signal once regardless of the trigger condition at the time (page 103). Horizontal menu key MENU Configures the horizontal view (page 85). Moves the waveform horizontally (page 85). Horizontal position knob TIME/DIV knob TIME/DIV Moves the waveform vertically (page 91). Vertical position knob CH1/CH2 key VOLTS/DIV knob Input terminal CH 1 VOLTS/DIV CH1 Configures the vertical scale and coupling mode for each channel (page 91).
PAGE 18
GDS-1000A-U Series User Manual External trigger input Power switch 18 EXT TRIG Accepts an external trigger signal (page 96). Powers the oscilloscope on or off.
PAGE 19
GETTING STARTED Rear Panel Power cord socket Power cord socket accepts the AC mains, 100 ~ 240V, 50/60Hz. Fuse socket The fuse socket holds the AC main fuse, T1A/250V. For the fuse replacement procedure, see page 140. USB slave port Accepts a type B (slave) male USB connector for remote control of the oscilloscope (page 104) or to print directly to a PictBridge compatible printer. Calibration output Outputs the calibration signal used in vertical scale accuracy calibration (page 134).
PAGE 20
GDS-1000A-U Series User Manual Display Waveforms Channel 1: Yellow Channel 2: Blue Trigger status Trig’d A signal is being triggered Trig? Waiting for a trigger condition Auto Updating the input signal regardless of trigger conditions STOP Triggering is stopped For trigger setting details, see page 96. Input signal frequency Updates the input signal frequency (the trigger source signal) in real-time.
PAGE 21
GETTING STARTED Setting up the Oscilloscope Background This section describes how to set up the oscilloscope properly including adjusting the handle, connecting a signal, adjusting the scale, and compensating the probe. Before operating the oscilloscope in a new environment, run these steps to make sure the oscilloscope is functionally stable. Procedure 1. Pull both bases of the handle out slightly. 2. Turn to one of the three preset positions. 3. Connect the power cord. 4. Press the power switch.
PAGE 22
GDS-1000A-U Series User Manual 6. Connect the probe between the Channel1 input terminal and probe compensation signal output (2Vp-p, 1kHz square wave). 7. Set the probe attenuation voltage to x10. 8. Press the Autoset key. A square waveform will appear in the center of the display. For details on Autoset, see page 48. 9. Press the Display key, then Type and select the vector waveform type. 10. Turn the adjustment point on the probe to flatten the square waveform edge.
PAGE 23
GETTING STARTED Over Compensation Normal Under Compensation 11. Setting up the oscilloscope is complete. You may continue with the other operations.
PAGE 24
GDS-1000A-U Series User Manual QUICK REFERENCE This chapter lists the oscilloscope menu tree, operation shortcuts, built-in help coverage, and default factory settings. Use this chapter as a handy reference to access the oscilloscope functions.
PAGE 25
QUICK REFERENCE Select acquisition mode Acquire Normal ~ Peak-Detect Select average number Normal Average 2/ 4/ 8/ 16/ 32/ 64/ 128/ 256 Peak Average Turn Delay on/off Detect Delay On/ Off On Delay On Sample Rate 500MS/s CH1/CH2 key Turn channel on/off CH 1 Coupling CH 1/2 / / Select coupling mode Invert Off On/ Off Coupling BW Limit Off On/ Off Invert waveform Voltage x1 Expand Center Voltage/Current Invert Center/Ground Turn bandwidth limit on/off BW Limit Select probe type Vol
PAGE 26
GDS-1000A-U Series User Manual Cursor key 1/2 Turn cursor on/off Cursor Move X1 cursor X1→ VAR Move X2 cursor X2→ VAR Move both X1 and X2 cursor X1X2→ VAR Switch to Y cursor X↔Y Cursor key 2/2 Turn cursor on/off Cursor Cursor Source CH1 CH1/ 2/ MATH Move Y1 cursor Y1 123.4mV Y1→ VAR Y2 12.9mV Move Y2 cursor Y1Y2 Y2→ VAR X↔Y Move both Y1 and Y2 cursor 10 .
PAGE 27
QUICK REFERENCE Display key Select waveform type Display Type Type Vectors/ Dots Vectors Accumulate On/ Off Off Waveform accumulate On/Off Accumulate Refresh Refresh accumulation Contrast Refresh / Full / Set display contrast Contrast→VAR Select display grid Autoset key Autoset Type Fit Screen Automatically find the signal and set the scale Fit Screen AC Priority Autoset Change the Type of Autoset mode.
PAGE 28
GDS-1000A-U Series User Manual Help key Turn help mode on/off Help Horizontal menu key Switch from Horizontal Menu to Horizontal Position Menu. Horizontal MENU Select main (default) display Main Select window mode Window→TIME/DIV Zoom in window mode Window Zoom Select window roll mode Roll Select XY mode XY Toggle adjustment mode H Pos Adj Reset horizontal marker Reset Set Horizontal marker/delete horizontal marker. HOR Navigate to previous horizontal marker.
PAGE 29
QUICK REFERENCE Math key 1/2 (+/-/x) Math on/off MATH Operation CH1+CH2 CH1+CH2 CH1-CH2 CH1xCH2 FFT FFT rms Math Select math operation type (+/– /x/FFT/FFT rms) Operation Position 0.
PAGE 30
GDS-1000A-U Series User Manual Math key 2/2 (FFT/FFT rms) MATH Operation FFT Source CH1 Window Hanning Vertical 2V 0.00 Div Zoom 1X 0.
PAGE 31
QUICK REFERENCE Measure key Measure Measure Vpp Source 1 1:204mV 2: 300mV Vavg 1: 1.93mV 2: 28.0mV Frequency 1: 1.000kHz 2: 3.003kHz CH1 Source 2 CH2 View all/Select Measurements (Voltage/ Time/Delay) Voltage Vpp Duty Cycle 1: 50.01% 2: 49.88% Rise Time 1. 76.20us 2. 70.
PAGE 32
GDS-1000A-U Series User Manual Save/Recall key 1/10 Switch to Save or Recall menu Save/Recall Recall default setup Default Setup Change CSV format CSV Format Save/Recall key 2/10 Select other menu Recall Setup Select setup source Source →VAR Recall setup Recall Go to USB file utilities File Utilities 32
PAGE 33
QUICK REFERENCE Save/Recall key 3/10 Select other menu Recall Waveform Select waveform source Source →VAR Select waveform destination Destination→VAR Recall waveform Recall Go to USB file utilities File Utilities Save/Recall key 4/10 Select other menu Recall Image Turn reference image on/off Ref image Recall waveform Recall Go to USB file utilities File Utilities 33
PAGE 34
GDS-1000A-U Series User Manual Save/Recall key 5/10 Select other menu Display Refs. Turn ref. waveform A on/off Ref.A Turn ref. waveform B on/off Ref.
PAGE 35
QUICK REFERENCE Save/Recall key 7/10 Select other menu Save Waveform Select source Source →VAR Select destination Destination →VAR Save waveform Save Go to USB file utilities File Utilities Save/Recall key 8/10 Select other menu Save Image Turn on/off ink saver Ink Saver Save image Save Go to USB file utilities File Utilities 35
PAGE 36
GDS-1000A-U Series User Manual Save/Recall key 9/10 Select other menu Save All Turn on/off ink saver Ink Saver Select destination Destination →VAR Save all Save Go to USB file utilities File Utilities Save/Recall key 10/10 Select file/folder File Utilities Select New Folder Enter Character Back Space VAR →Select Create or rename folder/file New Folder/Rename Rename Delete Save Previous Menu Previous Menu VAR →Enter character / Backspace / Save / Previous menu Delete folder/file Delete Go to pr
PAGE 37
QUICK REFERENCE Trigger key 1/6 Trigger Type Trigger Holdoff MENU MENU Type Holdoff Edge 40.
PAGE 38
GDS-1000A-U Series User Manual Trigger key 3/6 Select edge trigger type Edge Select trigger source Source Go to slope/coupling menu (page 39) Slope/Coupling Select trigger mode Mode Trigger key 4/6 Select pulse trigger type Type Select trigger source Source Select pulse trigger condition and pulse width When →VAR Go to slope/coupling menu (page 39) Slope/Coupling Select trigger mode Mode 38
PAGE 39
QUICK REFERENCE Trigger key 5/6 Select trigger slope type Coupling/Slope Slope / Coupling AC/ DC AC Rejection Off LF/ HF/ Off Noise Rej Off Previous Menu On/ Off Slope Select trigger coupling mode Coupling Select frequency rejection Rejection Turn noise rejection on/off Noise Rej Go back to previous menu Previous Menu Trigger key 6/6 Select Holdoff time VAR Set to minimum Holdoff time Set to Minimum 39
PAGE 40
GDS-1000A-U Series User Manual Utility key 1/11 (Utility #1) Go to hardcopy menu Hardcopy Go to probe compensation menu ProbeComp Select language Language Show system information System Info.
PAGE 41
QUICK REFERENCE Utility key 3/11 (Utility #3) Enter self calibration Self CAL Select USB port interface USB Port Go to the first Utility menu More Utility key 4/11 (Hardcopy -Save All) Hardcopy – Save All Function Function Save All Ink Saver Off Mem Leng USB 1M CSV Format Fast Previous Menu Select Hardcopy function On/ Off Turn on/off Ink saver USB Normal USB 1M/2M Ink Saver Fast/ Detail Set the memory length Mem Leng Change CSV format CSV Format Go to previous menu Previous Menu 41
PAGE 42
GDS-1000A-U Series User Manual Utility key 5/11 (Hardcopy -Printer) Select Hardcopy function Function Turn on/off Ink saver Ink Saver Set default page size Page Size Go to previous menu Previous Menu Utility key 6/11 (Hardcopy -Save Image) Select Hardcopy function Function Turn on/off Inksaver Ink Saver Go to previous menu Previous Menu 42
PAGE 43
QUICK REFERENCE Utility key 7/11 (Probe compensation) Select probe compensation signal Probe compensation Wave Type Frequency / only) 1k ~ 100k Set frequency for square wave ( only) 5% ~ 95% Frequency→VAR 1K Duty Cycle 50% Wave Type ( Default 1kHz Previous Menu Set duty cycle for square wave Duty Cycle→VAR Go to previous menu Previous Menu Utility key 8/11 (Go-NoGo) Switch between templates Template Select the template source Source Set the tolerance (% or Divisions) Tolerance →VAR Save the
PAGE 44
GDS-1000A-U Series User Manual Utility key 9/11 (Data Logging 1/2) Turn Data Logging On/Off Data logging Set the logging source Source Go to the Data Logging Edit menu Setup Go to the File Utilities menu File Utilities Go back to previous menu Previous Menu Utility key 10/11 (Data Logging 2/2) Save the logs as waveform data or as image files Save Set the logging interval Interval→VAR Set the duration of the record log Duration→VAR Go back to previous menu Previous Menu Utility key 11/11 (Self CAL Menu) S
PAGE 45
QUICK REFERENCE Default Settings Here are the factory installed panel settings which appear when pressing the Save/Recall key→ Default Setup. Acquisition Mode: Normal Channel Scale: 2V/Div Invert: Off Coupling: DC Probe attenuation voltage: x1 BW limit: Off Channel 1 & 2: On Cursor Source: CH1 Cursor: Off Display Type: Vectors Accumulate: Off Grid: Full Horizontal Math Scale: 2.5us/Div Mode: Main Timebase H Pos Adj: Fine Hor Pos: 0 Type: + (Add) Position: 0.
PAGE 46
GDS-1000A-U Series User Manual Data Logging Data logging: Off Source: CH1 Setup: Waveform Interval: 2 secs Duration: 5 mins Built-in Help The Help key shows the contents of the built-in help support. When you press a function key, its descriptions appear in the display. Applicable keys Acquire Display Cursor Measure Utility Save/Recall Hardcopy Autoset Run/Stop (Horizontal) (Trigger) (Vertical) CH 1 Help Help MATH CH 2 MENU MENU SINGLE FORCE Procedure 1. Press the Help key.
PAGE 47
MEASUREMENT MEASUREMENT The Measurement chapter describes how to properly observe a signal using the oscilloscope’s basic functions, and how to observe a signal in a detailed manner using some of the advanced functions such as: Automatic measurements, cursor measurements, and math operations. Basic Measurements This section describes the basic operations required in capturing and viewing an input signal. For more detailed operations, see the following chapters.
PAGE 48
GDS-1000A-U Series User Manual De-activating a channel To de-activate the channel, press the Channel key twice (once if the channel menu is already selected). Using Autoset Background The Autoset function automatically configures the panel settings to the best viewing conditions, in the following way.
PAGE 49
MEASUREMENT Procedure 1. Connect the input signal to the oscilloscope and press the Autoset key. Autoset 2. The waveform(s) appears in the center of the display. Undoing the Autoset To undo the Autoset, press Undo (available for a few seconds). Adjusting the trigger level If the waveform is still unstable, try adjusting the trigger level up or down by using the Trigger Level knob. Change Modes To change the type of mode, press Type (available for a few seconds).
PAGE 50
GDS-1000A-U Series User Manual Limitation Autoset does not work in the following situation. • Input signal frequency less than 2Hz • Input signal amplitude less than 30mV Running and stopping the trigger Background In the trigger Run mode, the oscilloscope constantly searches for a trigger condition and updates the signal onto the display when the condition is met. In the trigger Stop mode, the oscilloscope stops triggering and thus the last acquired waveforms stay in the display.
PAGE 51
MEASUREMENT Waveform operation Waveforms can be moved or scaled in both the Run and Stop mode. For details, see page 85 (Horizontal position/scale) and page 91 (Vertical position/scale). Changing the horizontal position and scale For more detailed configurations, see page 85. Setting the horizontal position The horizontal position knob moves the waveform left or right.
PAGE 52
GDS-1000A-U Series User Manual Changing the vertical position and scale For more detailed configuration, see page 91. 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 at the bottom left corner of the display. Run/Stop mode The waveform can be moved vertically in both Run and Stop mode.
PAGE 53
MEASUREMENT Using the probe compensation signal Background This section introduces how to use the probe compensation signal for general usage, in case the DUT signal is not available or to get a second signal for comparison. For probe compensation details, see page 135. Note: The frequency accuracy and duty factor are not guaranteed. Therefore the signal should not be used for reference purposes. Waveform type Square waveform used for probe compensation. 1k ~ 100kHz, 5% ~ 95%.
PAGE 54
GDS-1000A-U Series User Manual 4. Press Wave type repeatedly to select the wave type. 5. (For only) To change the frequency, press Frequency and use the Variable knob. Range 1kHz ~ 100kHz only) To change 6. (For the duty cycle, press Duty Cycle and use the Variable knob. Range Probe compensation 54 VARIABLE VARIABLE 5% ~ 95% For probe compensation details, see page 135.
PAGE 55
MEASUREMENT Automatic Measurements The automatic measurement function measures input signal attributes and updates them in the display. Up to 5 automatic measurement items can be updated at any one time on the side menus. All automatic measurement types can be displayed on screen if necessary.
PAGE 56
GDS-1000A-U Series User Manual Time measurement items Delay measurement items 56 Vlo Global low voltage. Vavg Averaged voltage of the first cycle. Vrms RMS (root mean square) voltage. ROVShoot Rise overshoot voltage. FOVShoot Fall overshoot voltage. RPREShoot Rise preshoot voltage. FPREShoot Fall preshoot voltage. Freq Frequency of the waveform. Period Waveform cycle time (=1/Freq). Risetime Rising time of the pulse (~90%). Falltime Falling time of the pulse (~10%).
PAGE 57
MEASUREMENT 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 between: Source 1 first falling edge and Source 2 last rising edge LFF Time between: Source 1 f
PAGE 58
GDS-1000A-U Series User Manual 2. Press the Measure key. Measure 3. The measurement results appear on the menu bar, constantly updated. All measurements are derived from the cursor positions. See Automatically measuring the input signals for more details (page 58). Horizontal Cursor X1 X2 Gating Turn gating off 4. Turn off cursors to turn off gated automatic measurements. page 61 Automatically measuring the input signals Viewing the measurement result 1. Press the Measure key. Measure 2.
PAGE 59
MEASUREMENT Editing a measurement item 3. Press the corresponding menu key (F1~F5) to select the measurement slot to be edited. 4. The editing menu appears Change measurement item 5. Use the Variable knob to select a different measurement item. Change measurement source 6. Press Source 1 repeatedly to change Source1 from CH1 to CH2 or MATH.
PAGE 60
GDS-1000A-U Series User Manual 7. Press Source 2 repeatedly to change the channel for Source2. Range View all measurements CH1, 2, Math 8. Press F3 to view all measurement items. 9. All the measurements appear in the center of the screen. 10. Press F3 again to return. Note: All the editing operations can still be performed when viewing all the measurement items. 11. Press Previous Menu to confirm the item selection and to go back to the measurement results view.
PAGE 61
MEASUREMENT Cursor Measurements Cursor lines, horizontal or vertical, show the precise position of the input waveforms or the math operation results. The horizontal cursors can track time, voltage/current* and frequency, whilst the vertical cursors can track voltage/current*. All measurements are updated in real-time. *probe type dependant (page 94). Using the horizontal cursors Procedure 1. Press the Cursor key. The cursors appear in the display. Cursor 2.
PAGE 62
GDS-1000A-U Series User Manual M1:dB Position of the left cursor in dB. M2:dB Position of the right cursor in dB. Moving the horizontal cursors ∆: dB The dB difference between M1 and M2. Div: The frequency per division. To move the left cursor, press X1 and then use the Variable knob. To move the right cursor, press X2 and then use the Variable knob. To move both cursors at once, press X1X2 and then use the Variable knob. Remove cursors Press Cursor to remove the onscreen cursors.
PAGE 63
MEASUREMENT Moving the vertical cursors Y1Y2 The difference between the upper and lower cursor V/A The voltage/current difference (Y1-Y2). To move the upper cursor, press Y1 and then use the Variable knob. To move the lower cursor, press Y2 and then use the Variable knob. To move both cursors at once, press Y1Y2 and then use the Variable knob. Remove cursors Press Cursor to remove the onscreen cursors.
PAGE 64
GDS-1000A-U Series User Manual FFT RMS Performs a FFT RMS calculation on a signal. RMS is similar to FFT, however the amplitude is calculated as RMS and not dB. Four types of FFT windows are available: Hanning, Flattop, Rectangular, and Blackman. Hanning FFT window Frequency resolution Good Amplitude resolution Not good Suitable for.... Flattop FFT window Frequency resolution Not good Amplitude resolution Good Suitable for....
PAGE 65
MEASUREMENT 3. Press Operation repeatedly to select addition (+), subtraction (–) or multiplication (×). 4. The math measurement result appears in the display. VARIABLE 5. To move the math result vertically, use the Variable knob. The position will be displayed in Position. 6. To clear the math result from the display, press the Math key again. MATH Using the FFT function Procedure 1. Press the Math key. MATH 2. Press Operation repeatedly to select FFT or FFT RMS. 3.
PAGE 66
GDS-1000A-U Series User Manual 5. The FFT result appears. The horizontal scale changes from time to frequency, and the vertical scale from voltage to dB or RMS. 6. To move the FFT waveform vertically, press Vertical repeatedly until Div is selected. Use the Variable knob to change the vertical scale. Range –12.00 Div ~ +12.00 Div 7. To select the vertical scale of an FFT waveform, press Vertical repeatedly until dB is selected. Use the Variable knob to change the vertical scale.
PAGE 67
MEASUREMENT 10. To move the FFT/FFT rms waveform horizontally, press Zoom repeatedly until Hz is selected. Use the Variable knob to change the horizontal position. Range VARIABLE 0~50.000MHz 11. To clear the FFT result from the display, press the Math key again. MATH Go No-Go Testing Overview Background Go-NoGo testing checks if a waveform conforms to a user-specified maximum and minimum boundary (template).
PAGE 68
GDS-1000A-U Series User Manual Edit: NoGo When Procedure 1. Press the Utility key. Utility 2. Press the More key. 3. Press No Go When repeatedly to select the NoGo conditions. NoGo when the waveform is inside the boundary (template) NoGo when the waveform is outside of the boundary (template) Edit: Source Procedure 1. Press the Utility key. 2. Press the More key. 3. Press the Go-NoGo Menu key. 4. Press Source repeatedly to select the source channel (CH1 or CH2).
PAGE 69
MEASUREMENT Edit: NoGo Violation Conditions Procedure 1. Press the Utility key. Utility 2. Press the More key. 3. Press the Go-NoGo Menu key. 4. Press Violating repeatedly to select the NoGo conditions. Stop Stops the test when the NoGo conditions have been met. Continue The tests continue even when the NoGo conditions have been met. Edit: Template (boundary) Background The NoGo template sets the upper and lower amplitude boundary. Two methods are available: Min/Max and Auto.
PAGE 70
GDS-1000A-U Series User Manual Disadvantage: The waveforms (templates) have to be stored internally prior to this selection. Auto Creates the upper and lower boundary (template) from the source signal, not from an internally stored waveform. Advantage: No need to store the waveforms prior to this selection. Disadvantage: The template shape is proportional to the source signal. The distance (allowance) between the source signal and the upper and lower template is the same. Max/Mix 1.
PAGE 71
MEASUREMENT 7. Press Source and use the Variable knob to select the waveform template. VARIABLE Max Waveform A: Ref A, W01~W15 Min Waveform B: Ref B, W01~W15 8. Press Position and use the Variable knob to set the waveform amplitude. VARIABLE 9. Repeat steps 5-7 for the other template setting (Max or Min). 10. When both Max and Min templates have been configured, press Save & Create to save the templates.
PAGE 72
GDS-1000A-U Series User Manual Auto 1. The template is based on the source signal. Ensure the source signal appears on the display. 2. Press the Utility key. Utility 3. Press the More key. 4. Press the Go-NoGo Menu key. 5. Press the Template Edit key. 6. Press Template repeatedly to select the Auto template. 7. Press Source and use the Variable knob to select the template source. VARIABLE Source CH1, CH2 8. Press Tolerance repeatedly to choose the tolerance units, % or Div.
PAGE 73
MEASUREMENT Div 0.04 Div ~ 4.0 Div 9. When the Auto template has been configured, press Save & Create to save the template. Run Go-NoGo Tests Procedure 1. Press the Utility key. Utility 2. Press the More key. 3. Press the Go-NoGo Menu key. Ensure the source signal and boundary templates appear on the screen.
PAGE 74
GDS-1000A-U Series User Manual 4. Press Go-NoGo. The test starts and stops according to the conditions set on page 68, 69. To stop the test that has already started, press Go-NoGo again. 5. The test results appear in the Ratio soft-key. The numerator denotes the total number of failed tests. The denominator denotes the total number of tests. Numerator Number of “failed“ tests. Denominator Total number of tests.
PAGE 75
MEASUREMENT Edit: Source Procedure 1. Press the Utility key. Utility 2. Press the More key. 3. Press the Data logging Menu key. 4. Press Source repeatedly to select the source channel (CH1 or CH2). Edit: Setup Parameters Background The logging function must set the type of data that will be logged (waveform/image), the capture interval time and the duration of the data logging. Procedure 1. Press the Utility key. Utility 2. Press the More key. 3. Press the Data logging Menu key. 4.
PAGE 76
GDS-1000A-U Series User Manual 5. Press Save repeatedly to log data or screen images. 6. Press Interval and use the Variable knob to select the interval time. VARIABLE Interval time 2 secs~ 2min (duration = 5 min) 2 secs~ 5 min (duration 5~ 30 min) 2 secs~ 30 min (duration 30+ min) 7. Press Duration and use the Variable knob to set the duration time. VARIABLE Duration 5 mins ~ 100 hours 8. Press Previous menu to return to the Data logging menu. Data logging is now ready to begin.
PAGE 77
MEASUREMENT Run Data logging Background Ensure the data source (page 75) and data logging setup has been set (page 75). Procedure 1. Insert a USB flash drive into the USB front panel port. 2. Press the Utility key. Utility 3. Press the More key. 4. Press the Data logging Menu key. 5. Press Data logging to turn data logging On. Data/image files start logging to the USB flash drive automatically. To stop the Data logging, press the Data logging key again.
PAGE 78
GDS-1000A-U Series User Manual CONFIGURATION The Configuration chapter describes how to configure panel settings to make measurements and observations suited to the application needs. Acquisition The acquisition process samples the analog input signals and converts them into digital format for internal processing. You may select the normal, average, or peak detect acquisition mode. Selecting the acquisition mode Procedure 1. Press the Acquire key. Acquire 2.
PAGE 79
CONFIGURATION Average Multiple data is averaged to form a waveform. This mode is useful for drawing a noise-free waveform. To select the number, press Average repeatedly. Average number: 2, 4, 8, 16, 32, 64, 128, 256 Peak detect To activate the Peak detect mode, press Peak-Detect. Only the minimum and maximum value pairs for each acquisition interval (bucket) are used. This mode is useful for catching abnormal glitches in a signal. Peak detect effect 1.
PAGE 80
GDS-1000A-U Series User Manual 7. Press Normal. 8. Press Peak-Detect and see that a spike noise is captured. Example The peak detect mode reveals the occasional glitch. Normal mode Peak detect mode Selecting Delay mode Background Delay On 80 When delay time is ON, the displayed output is delayed for a defined amount of time from the trigger point. Using the delay function is useful for observing an area of the waveform that occurs some time after the trigger point.
PAGE 81
CONFIGURATION Delay Off Procedure With Delay Off the expansion point and trigger point are always in the same position. Thus when the horizontal scale is adjusted, the waveform expands from the trigger point. 1. Press the Acquire key. Acquire 2. Press Delay On/Off to toggle Delay On/Off. 3. Use the Horizontal Position knob to increase or decrease the delay time when Delay is set to On. 4. Adjust the horizontal scale to zoom into the waveform.
PAGE 82
GDS-1000A-U Series User Manual Real time vs Equivalent time sampling mode Background The oscilloscope automatically switches between two sampling modes, Real-time and Equivalenttime, according to the number of active channels and sampling rate. Real-time sampling Once sampled data is used to reconstruct a single waveform. Short-time events might get lost if the sampling rate gets too high. This mode is used when the sampling rate is relatively low (1GSa/s or lower).
PAGE 83
CONFIGURATION Display The Display section describes how to configure the display settings: drawing type, waveform accumulation, contrast adjustment, and grid settings. Selecting vector or dot drawing Procedure 1. Press the Display key. Display 2. Press Type repeatedly to select the waveform drawing. Types Dots Only the sampled dots are displayed. Vectors The sampled dots are connected by lines.
PAGE 84
GDS-1000A-U Series User Manual Example Accumulation off Accumulation on Adjusting the display contrast Display Procedure 1. Press the Display key. 2. Press Contrast. 3. Turn the Variable knob left to lower the contrast (dark display) or right to raise the contrast (bright display). VARIABLE Selecting the display grid Procedure 1. Press the Display key. Display 2. Press the grid icon repeatedly to select the grid. Parameters Shows the full grid. Shows the outer frame and X/Y axis.
PAGE 85
CONFIGURATION Horizontal View The Horizontal view section describes how to configure the horizontal scale, position, waveform update mode, window zoom, and X-Y mode. Moving the waveform position horizontally Procedure The horizontal position knob moves the waveform left or right. The position indicator at the top of the display shows the center and current position.
PAGE 86
GDS-1000A-U Series User Manual Selecting the waveform update mode Background The display update mode is switched automatically or manually according to the horizontal scale. Main mode Updates the whole displayed waveform at once. The main mode is automatically selected when the horizontal scale (timebase) is fast. Roll mode Horizontal scale ≤100ms/div Trigger All modes available Updates and moves the waveform gradually from the right side of the display to the left.
PAGE 87
CONFIGURATION Zooming the waveform horizontally Procedure/ range 1. Press the Horizontal Menu key. MENU 2. Press Window. 3. Use the horizontal position knob to move the zoom range sideways, and TIME/DIV knob to change the zoom range width. TIME/DIV The width of the bar in the middle of the display is the actual zoomed area. Zoom range 1ns ~ 25s 4. Press Window Zoom. The specified range gets zoomed.
PAGE 88
GDS-1000A-U Series User Manual Viewing waveforms in the X-Y mode Background The X-Y mode compares the voltage of Channel 1 and Channel 2 waveforms in a single display. This mode is useful for observing the phase relationship between the two waveforms. Procedure 1. Connect the signals to Channel 1 (X-axis) and Channel 2 (Y-axis). 2. Make sure both Channel 1 and 2 are activated. 3. Press the Horizontal key. CH 1 CH 2 MENU 4. Press XY.
PAGE 89
CONFIGURATION Horizontal Adjustment Menu Background The horizontal adjustment menu allows markers to be set at different times relative to the Horizontal position marker at 0 seconds. Each marker is linked to the mark directly before and after (in time). There can be up to 30 markers linked together. 1. Press the Horizontal menu key twice to enter the horizontal adjustment menu MENU MENU 2. Press H Pos Adj to toggle between coarse and fine adjustments. 3.
PAGE 90
GDS-1000A-U Series User Manual Navigate markers 7. Press Previous to go to the previous marker. 8. Press Next to go to the next marker.
PAGE 91
CONFIGURATION Vertical View (Channel) The Vertical view section describes how to set the vertical scale, position, bandwidth limitation, coupling mode, and attenuation. Moving the waveform position vertically Procedure To move the waveform up or down, turn the vertical position knob for each channel. Selecting the vertical scale VOLTS/DIV Procedure To change the vertical scale, turn the VOLTS/DIV knob; left (down) or right (up).
PAGE 92
GDS-1000A-U Series User Manual AC coupling mode. Only the AC portion of the signal appears on the display. This mode is useful for observing AC waveforms mixed with DC components. Expand Vertical Scale Center / Ground Background Expand Ground Expand Center 92 Normally when the vertical scale is increased, the scaled image is centered from ground. However a signal with a voltage bias could be obscured when the vertical scale is increased.
PAGE 93
CONFIGURATION Procedure CH 1 1. Press the Channel key. 2. Press F5 to toggle between Expand Center and Expand Ground. 3. To change the vertical scale, turn the VOLTS/DIV knob; left (down) or right (up). VOLTS/DIV The vertical scale indicator on the bottom left of the display changes accordingly. Inverting the waveform vertically Procedure CH 1 1. Press the Channel key. 2. Press Invert. The waveform becomes inverted (upside down) and the Channel indicator in the display shows a down arrow.
PAGE 94
GDS-1000A-U Series User Manual Limiting the waveform bandwidth Background Bandwidth limitation puts the input signal into a 20MHz (−3dB) low-pass filter. This function is useful for cutting off high frequency noise to see the clear waveform shape. Procedure 1. Press the Channel key. CH 1 2. Press BW Limit to turn on or off the limitation. When turned on, the BW indicator appears next to the Channel indicator in the display.
PAGE 95
CONFIGURATION 2. Press F4 repeatedly to select voltage or current probes. 3. Use the variable knob to edit the voltage or current attenuation. VARIABLE 4. The voltage/current scale in the channel indicator changes accordingly. There is no change in the waveform shape. Range 0.1X~2000X (1-2-5 steps) Note: The attenuation factor adds no influence on the real signal; it only changes the voltage/current scale on the display.
PAGE 96
GDS-1000A-U Series User Manual Trigger The Trigger function configures the conditions by which the oscilloscope captures the incoming signals. Trigger type Edge Triggers when the signal crosses an amplitude threshold in either a positive or negative slope. Video Extracts a sync pulse from a video format signal and triggers on a specific line or field. Pulse Triggers when the pulse width of the signal matches the trigger settings.
PAGE 97
CONFIGURATION The Auto trigger status appears in the upper right corner of the display. Single The oscilloscope acquires the input signals once when a trigger event occurs, then stops acquiring. Pressing the Single key again will repeat the process. SINGLE The Single trigger status appears in the upper right corner of the display. (Searching) Normal (Triggered) The oscilloscope acquires and updates the input signals only when a trigger event occurs.
PAGE 98
GDS-1000A-U Series User Manual 1~263 for NTSC, 1~313 for PAL/SECAM line Pulse condition (pulse trigger) Sets the pulse width (20ns ~ 10s) and the triggering condition. > Longer than = Equal to < Shorter than ≠ Not equal to Triggers on the rising edge. Trigger slope Triggers on the falling edge. Trigger coupling Frequency rejection AC Triggers only on AC component. DC Triggers on AC+DC component. LF Puts a high-pass filter and rejects the frequency below 50kHz.
PAGE 99
CONFIGURATION Pressing Set to Minimum sets the Holdoff time to the minimum, 40ns. Note: The holdoff function is automatically disabled when the waveform update mode is in Roll mode. Configuring the edge trigger Procedure 1. Press the Trigger menu key. MENU 2. Press Type repeatedly to select edge trigger. 3. Press Source repeatedly to select the trigger source. Range Channel 1, 2, Line, Ext 4. Press Mode repeatedly to select the Auto or Normal trigger mode.
PAGE 100
GDS-1000A-U Series User Manual 7. Press Coupling repeatedly to select the trigger coupling, DC or AC. Range DC, AC 8. Press Rejection to select the frequency rejection mode. Range LF, HF, Off 9. Press Noise Rej to turn the noise rejection on or off. Range On, Off 10. Press Previous menu to go back to the previous menu. Configuring the video trigger Procedure 1. Press the Trigger menu key. 2. Press Type repeatedly to select video trigger.
PAGE 101
CONFIGURATION 4. Press Standard repeatedly to select the video standard. Range NTSC, PAL, SECAM 5. Press Polarity repeatedly to select the video signal polarity. Range positive, negative 6. Press Line repeatedly to select the video field line. Use the Variable knob to select the field. Field VARIABLE NTSC: 1 ~ 262 (Field 2), 1 ~ 263 (Field 1) PAL/SECAM: 1 ~ 312 (Field 2), 1 ~ 313 (Field1) Configuring the pulse width trigger Procedure 1. Press the Trigger menu key. MENU 2.
PAGE 102
GDS-1000A-U Series User Manual 4. Press Mode repeatedly to select the trigger mode, Auto or Normal. To select the Single trigger mode, press the Single key. Range SINGLE Auto, Normal 5. Press When repeatedly to select the pulse condition. Then use the Variable knob to set the pulse width. VARIABLE Condition > , < , = , ≠ Width 20ns ~ 10s 6. Press Slope/Coupling to set trigger slope and coupling. 7. Press Slope repeatedly to select the trigger slope, which also appears at the bottom of the display.
PAGE 103
CONFIGURATION 10. Press Noise Rej to turn the noise rejection on or off. Range On, Off 11. Press Previous menu to go back to the previous menu. Manually triggering the signal Note: This section describes how to manually trigger the input signals when the oscilloscope does not capture them. This section applies to the Normal and Single trigger mode, since in the Auto trigger mode, the oscilloscope keeps updating the input signal regardless of the trigger conditions.
PAGE 104
GDS-1000A-U Series User Manual Rear Panel USB Port Interface The USB slave port on the rear panel can be set to auto detect, however occasionally the USB host type cannot be detected. The USB Port function allows the USB host type to be manually or automatically set for the rear panel. USB connection PC / Printer end Type A, host GDS-1000A-U end Type B, slave Speed Procedure 1.1/2.0 (full speed) 1. Connect the USB cable to the USB slave port on the GDS-1000A-U. 2.
PAGE 105
CONFIGURATION Remote Control Interface The Remote control interface section describes how to set up the USB interface for PC connection. Remote control command details are described in the GDS-1000A-U Programming Manual. Note that printing to a PictBridge compatible printer and remote control cannot be supported at the same time as the same USB port is used. USB connection PC / Printer end Type A, host GDS-1000A-U end Type B, slave Speed Procedure 1.1/2.0 (full speed) 1.
PAGE 106
GDS-1000A-U Series User Manual 5. Run this query command via the terminal application. *idn? This command should return the manufacturer, model number, serial number, and firmware version in the following format. GW, GDS-1152A-U, XXXXXXX, V1.00 6. Configuring the command interface is complete. Refer to the programming manual for the remote commands and other details.
PAGE 107
CONFIGURATION System Settings The system settings show the oscilloscope’s system information and allow changing the language. Viewing the system information Procedure Utility 1. Press the Utility key. 2. Press System Info. The upper half of the display shows the following information. • Manufacturer • Model • Serial number • Firmware version • Web address 3. Press any other key to go back to the waveform display mode.
PAGE 108
GDS-1000A-U Series User Manual Procedure 1. Press the Utility key. 2. Press Language repeatedly to select the language.
PAGE 109
SAVE/RECALL SAVE/RECALL The save function allows saving display images, waveform data, and panel settings into the oscilloscope’s internal memory or to the front panel USB port. The recall function allows recalling the default factory settings, waveform data, and panel settings from the oscilloscope’s internal memory or from USB. File Structures Three types of file are available: display image, waveform file, and panel settings. Display image file format Format xxxx.
PAGE 110
GDS-1000A-U Series User Manual Waveform type Storage location Waveform Memory Depth Detail Contains the waveform amplitude and time of each point (4k/1M/2M) relative to the trigger point. Fast Only contains the waveform amplitude data for each point (4k/1M/2M). CH1, 2 Input channel signal Math Math operation result (page 63) Internal memory The oscilloscope’s internal memory, which can hold 15 waveforms.
PAGE 111
SAVE/RECALL Note: 2M point memory lengths are only available for time bases slower than 10ns/div on a single channel, and 1 M point memory lengths are only available for time bases slower than 25ns/div on two channels. Waveform file contents: other data A waveform file also includes the following information.
PAGE 112
GDS-1000A-U Series User Manual Setup file format Format xxxx.set (proprietary format) A setup file saves or recalls the following settings.
PAGE 113
SAVE/RECALL Using the USB file utilities Background When a USB flash drive is inserted into the oscilloscope, file utilities (file deletion, folder creation and file/folder renaming) are available from the front panel. Procedure 1. Insert a USB flash drive into the front panel USB port. 2. Press the Save/Recall key. Select any save or recall function. For example USB Destination in the Save image function. Save/Recall (Example) 3. Press File Utilities. The display shows the USB flash drive contents.
PAGE 114
GDS-1000A-U Series User Manual Creating a new 1. Move the cursor to the file folder / renaming or folder location and press a file or folder New Folder or Rename. The file/folder name and the character map will appear on the display. 2. Use the Variable knob to move the pointer to the characters. Press Enter Character to add a character or Back Space to delete a character. 3. When editing is complete, press Save. The new/renamed file or folder will be saved. Deleting a folder 1.
PAGE 115
SAVE/RECALL Quick Save (HardCopy) Background The Hardcopy key works as a shortcut for printing screen images directly to a printer or to save display images, waveform data, and panel settings onto a USB flash drive card. Hardcopy The Hardcopy key can be configured into three types of operations: save image, save all (image, waveform, setup) and printer. Using the Save/Recall key can also save files with more options. For details, see page 117. Functionalities Procedure Save/Recall Save image (*.
PAGE 116
GDS-1000A-U Series User Manual 5. To invert the color in the display image, press Ink Saver. This turns Ink Saver on or off. 6. If Save Image was selected, press Mem Leng repeatedly to select USB Normal or USB 1M/2M. USB Normal and USB 1M/2M sets the waveforms to a 4k and 1M/2M memory length when saving, respectively. 1M memory length is available when both CH1 and CH2 are active; 2M memory length is available when a single channel is active only. 7. Press the Hardcopy key.
PAGE 117
SAVE/RECALL Save This section describes how to save data using the Save/Recall menu. File type/source/destination Item Source Panel setup (xxxx.set) • Waveform data (xxxx.csv) Panel settings Destination • Internal memory: S1 ~ S15 • External memory: USB • Channel 1, 2 • • Math operation result Internal memory: W1 ~ W15 • Reference waveform A, B • Reference waveform A, B • External memory: USB Display image (xxxx.
PAGE 118
GDS-1000A-U Series User Manual Saving the panel settings Procedure 1. (For saving to USB flash drive) Insert the USB flash drive into the front panel USB port. 2. Press the Save/Recall key twice to access the Save menu. Save/Recall Save/Recall 3. Press Save Setup. 4. Press Destination repeatedly to select the saved location. Use the Variable knob to change the internal memory location (S1 ~ S15). VARIABLE Memory Internal memory, S1 ~ S15 USB USB, no practical limitation for the amount of files.
PAGE 119
SAVE/RECALL File utilities To edit the USB drive contents (create/ delete/ rename files and folders), press File Utilities. For details, see page 113. Saving the waveform Procedure 1. (For saving to USB flash drive) Insert the USB flash drive into the front panel USB port. 2. Press the Save/Recall key twice to access the Save menu. Save/Recall Save/Recall 3. Press Save Waveform. 4. Press Source. Use the Variable knob to select the source signal.
PAGE 120
GDS-1000A-U Series User Manual Memory Internal memory, W1 ~ W15 USB Normal Save to the USB flash drive with a 4k waveform memory length. USB 1M Save to the USB flash drive with a 1M waveform memory length. For 2 channel operation only. USB 2M Save to the USB flash drive with a 2M waveform memory length. For single channel operation only. Ref Internal reference waveform, A/B 6. Press Save to confirm saving. When completed, a message appears at the bottom of the display.
PAGE 121
SAVE/RECALL Saving the display image Background Procedure Saving the display image can be used as a screen capture or it can be used as a reference waveform. 1. Insert the USB flash drive into the front panel USB port. (Image files can only be saved to USB) 2. Press the Save/Recall key twice to access the Save menu. Save/Recall Save/Recall 3. Press Save Image. 4. Press Ink Saver repeatedly to invert the background color (on) or not (off). 5. Note: Destination is set as USB. This cannot be changed. 6.
PAGE 122
GDS-1000A-U Series User Manual Saving all (panel settings, display image, waveform) Procedure 1. (For saving to USB flash drive) Insert the USB flash drive into the front panel USB port. 2. Press the Save/Recall key twice to access the Save menu. Save/Recall Save/Recall 3. Press Save All. The following information will be saved. Setup file (Axxxx.set) Two types of setups are saved: the current panel setting and the last internally saved settings (one of S1 ~ S15). Display image (Axxxx.
PAGE 123
SAVE/RECALL USB 1M Save to the USB flash drive with a 1M waveform memory length. For 2 channel operation only. USB 2M Save to the USB flash drive with a 2M waveform memory length. For single channel operation only. 6. Press Save 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 flash drive is removed from the USB port. It takes approximately 1 min to save a 2M waveform to the USB drive in fast mode.
PAGE 124
GDS-1000A-U Series User Manual Recall File type/source/destination Item Source Default panel setup • Factory installed setting • Current front panel Reference waveform • Internal memory: A, B • Current front panel Panel setup (DSxxxx.set) • Internal memory: S1 ~ S15 • Current front panel • External memory: USB flash drive • Internal memory: W1 ~ W15 • Reference waveform A, B • External memory: USB flash drive Waveform data (DSxxxx.
PAGE 125
SAVE/RECALL Recalling the default panel settings Procedure 1. Press the Save/Recall key. Save/Recall 2. Press Default Setup. The factory installed setting will be recalled. Setting contents Acquisition Channel Cursor Display Horizontal Math Measure Trigger Utility The following is the default panel setting contents. Mode: Normal Coupling: DC Invert: Off BW limit: Off voltage: x1 Source: CH1 Horizontal: None Vertical: None Type: Vectors Accumulate: Off Graticule: Scale: 2.
PAGE 126
GDS-1000A-U Series User Manual Recalling a reference waveform to the display Procedure 1. The reference waveform must be stored in advance. See page 119 for details. 2. Press the Save/Recall key. Save/Recall 3. Press Display Refs. The reference waveform display menu appears. 4. Select the reference waveform, Ref A or Ref B, and press it. The waveform appears on the display and the period and amplitude of the waveform appears in the menu. 5. To clear the waveform from the display, press RefA/B again.
PAGE 127
SAVE/RECALL 3. Press Recall Setup. 4. Press Source repeatedly to select the file source, internal or external memory. Use the Variable knob to change the memory. VARIABLE Memory Internal memory, S1 ~ S15 USB USB flash drive, DSXXXX.SET. The setup file(s) must be placed in the root directory to be recognized. 5. Press Recall to confirm recalling. When completed, a message appears at the bottom of the display.
PAGE 128
GDS-1000A-U Series User Manual 3. Press Recall Waveform. The display shows the available source and destination options. 4. Press Source repeatedly to select the file source, internal memory or USB. Use the Variable knob to change the memory location (W1 ~ W15)/DSXXXX.CSV. VARIABLE Memory Internal memory, W1 ~ W15 USB USB flash drive, DSXXXX.CSV. The waveform file(s) must be placed in the root directory to be loaded. 5. Press Destination. Use the Variable knob to select the memory location.
PAGE 129
SAVE/RECALL File utilities To edit the USB drive contents (create/ delete/ rename files and folders), press File Utilities. For details, see page 113. Recall Image Background Recall Image is useful for recalling reference images that would not be possible using the Recall Waveform function, such as in X-Y mode. Using the Recall Image function will superimpose the reference image on the screen. Before recalling an image, an image must first be saved to USB, see page 121.
PAGE 130
GDS-1000A-U Series User Manual 4. Use the Variable knob to choose a file name (DSXXXX.BMP). USB VARIABLE The image file must be placed in the root directory to be recognized. 5. Press Recall to confirm recalling. When completed, a message appears at the bottom of the display. 6. Press Reference Image to turn on /off the current image. Note File utilities 130 The file will not be recalled if the power is turned off or the USB flash drive is removed before completion.
PAGE 131
PRINT PRINT The GDS-1000A-U is able to print screen images directly to a PictBridge compatible printer. The printed images can use the “Ink Saver” feature to print onto a white rather than a black background to reduce the amount of ink used. Note that printing and remote control cannot be used at the same time. Print (Hardcopy) Background The Hardcopy key works as a shortcut for printing screen images directly to a printer or to save display images, waveform data, and panel settings onto USB.
PAGE 132
GDS-1000A-U Series User Manual 2. Insert the other end of the USB cable into the printer USB port. LINE VOLTAGE AC 100 RANGE FREQUENCY 240V 50 60Hz FUSE RATING T1A 250V POWER MAX. 18W 40VA 3. Press the Utility key. Utility 4. Press the More key twice. X2 5. Press USB Port repeatedly to set the USB Port to Printer. 6. Press the Utility key. 7. Press Hardcopy Menu. 8. Press Function repeatedly to select Printer. 9. To invert the color in the display image, press Ink Saver.
PAGE 133
PRINT 10. To change the default page size, press Page Size. Default Default printer page setting. 4X6 4 X 6 inches A4 Standard A4 size 11. Press the Hardcopy key. The current screen image will be printed to the printer. Hardcopy The Hardcopy key can be used to print to a printer each time until it is configured otherwise. Note If the error message “Printer Not Ready” is displayed, please check to ensure the printer is turned on, the USB cable is properly connected, and that the printer is ready.
PAGE 134
GDS-1000A-U Series User Manual MAINTENANCE Two types of maintenance operations are available: calibrating the vertical resolution, and compensating the probe. Run these operations when using the oscilloscope in a new environment. Vertical Resolution Calibration Procedure 1. Press the Utility key. Utility 2. Press the More key twice. x2 3. Press Self Cal Menu. 4. Press Vertical. The message “Set CAL to CH1, then press F5” appears at the bottom of the display. 5.
PAGE 135
MAINTENANCE 7. The Channel1 calibration will complete in less than 5 minutes. 8. When finished, connect the calibration signal to the Channel 2 input and repeat the procedure. Ch1 calibration 1/3 Done!! 9. When the calibration is complete the display will go back to the previous state. Probe Compensation Procedure 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 voltage attenuation to x10. 2.
PAGE 136
GDS-1000A-U Series User Manual 4. Press Wavetype repeatedly to select the standard square wave. 5. Press the Autoset key. The compensation signal will appear in the display. Autoset 6. Press the Display key, then Type to select the vector waveform. 7. Turn the adjustment point on the probe until the signal edge becomes sharp.
PAGE 137
FAQ FAQ • The input signal does not appear in the display. • I want to remove some contents from the display. • The waveform does not update (frozen). • The probe waveform is distorted. • Autoset does not catch the signal well. • I want to clean up the cluttered panel settings. • The accuracy does not match the specifications. • The oscilloscope will not allow a 2M waveform to be saved. The input signal does not appear in the display.
PAGE 138
GDS-1000A-U Series User Manual The waveform does not update (frozen). Press the Run/Stop key to unfreeze the waveform. See page 50 for details. For trigger setting details, see page 96. If this does not help, press the CH key. If the signal still does not appear, press the Autoset key. The probe waveform is distorted. You might need to compensate the probe. For details, see page 135.
PAGE 139
FAQ The accuracy does not match the specifications. Make sure the device is powered on for at least 30 minutes, within +20°C~+30°C. This is necessary to stabilize the unit to match the specification. The oscilloscope will not allow a 2M waveform to be saved. Make sure that only 1 channel is active. Make sure that the signal has been triggered and that the STOP or Single key has been pressed. Ensure the time base is slower than 10 ns/div. See page 109.
PAGE 140
GDS-1000A-U Series User Manual APPENDIX Fuse Replacement Procedure 1. Remove the power cord and remove the fuse socket using a minus driver. 2. Replace the fuse in the holder.
PAGE 141
APPENDIX GDS-1000A-U Series Specifications The specifications apply when the oscilloscope is powered on for at least 30 minutes under +20°C~+30°C. Model-specific specifications GDS-1072A-U GDS-1102A-U GDS-1152A-U Bandwidth (–3dB) DC coupling: DC ~ 70MHz AC coupling: 10Hz ~ 70MHz Bandwidth Limit 20MHz (−3dB) Trigger Sensitivity 0.5div or 5mV (DC ~ 25MHz) 1.5div or 15mV (25MHz~70MHz) External Trigger ~ 50mV (DC~25MHz) Sensitivity ~ 100mV (25MHz~70MHz) Rise Time < 5.8ns approx.
PAGE 142
GDS-1000A-U Series User Manual Common specifications Vertical Trigger External trigger Horizontal X-Y Mode Signal Acquisition 142 Sensitivity Accuracy Bandwidth Rise Time Input Coupling Input Impedance Polarity Maximum Input Math Operation Offset Range 2mV/div~10V/Div (1-2-5 increments) ± (3% x |Readout|+0.1div + 1mV) See model-specific specifications See model-specific specifications AC, DC, Ground 1MΩ±2%, ~15pF Normal, Invert 300V (DC+AC peak), CAT II +, –, ×, FFT, FFT rms 2mV/div~50mV/div: ±0.
PAGE 143
APPENDIX Cursors and Measurement Control Panel Function Display Interface Probe Compensation Signal Power Source Operation Environment Storage Environment Dimensions Weight Voltage Vpp, Vamp, Vavg, Vrms, Vhi, Vlo, Vmax, Vmin, Rise Preshoot/ Overshoot, Fall Preshoot/ Overshoot Time Freq, Period, Rise Time, Fall Time, + Width, – Width, Duty Cycle Delay FRR, FRF, FFR, FFF, LRR, LRF, LFR, LFF Cursors Voltage difference (ΔV) and Time difference (ΔT) between cursors Auto Counter Resolution: 6 digits, Acc
PAGE 144
GDS-1000A-U Series User Manual Probe Specifications GDS-1072A-U Probe Applicable model & GDS-1072A-U probe GTP-070A-4* Position x 10 Attenuation Ratio 10:1 Bandwidth DC ~ 70MHz Input Resistance 10MΩ when used with 1MΩ input Input Capacitance 28pF~32pF Maximum Input ≤600Vpk, Derating with frequency Voltage Position x 1 Attenuation Ratio 1:1 Bandwidth DC ~ 6MHz Input Resistance 1MΩ when used with 1MΩ input Input Capacitance 120pF~220pF Maximum Input ≤200Vpk, Derating with frequency Voltage Operating Cond.
PAGE 145
APPENDIX GDS-1152A-U Probe Applicable model & probe Position x 10 Attenuation Ratio Bandwidth Input Resistance Input Capacitance Maximum Input Voltage Position x 1 Attenuation Ratio Bandwidth Input Resistance Input Capacitance Maximum Input Voltage Operating Cond. Temperature Relative Humidity Safety Standard GDS-1152A-U GTP-150A-2* 10:1 DC ~ 150MHz 10MΩ when used with 1MΩ input 17pF approx. 500V CAT I, 300V CAT II (DC+Peak AC)Derating with frequency 1:1 DC ~ 6MHz 1MΩ when used with 1MΩ input 47pF approx.
PAGE 146
GDS-1000A-U Series User Manual Dimensions 341.5 159.0 115.1 VARIABLE Acquire Display Utility Help Autoset Cursor Measure Save/Recall Hardcopy Run/Stop VERTICAL HORIZONTAL TRIGGER MATH CH 2 MENU VOLTS/DIV TIME/DIV MENU SINGLE VOLTS/DIV FORCE CH1 CH2 X GDS-1152A-U EXT TRIG Y Digital Storage Oscilloscope 150 MHz 1 G Sa/s 1M 300V 15pF CAT MAX. 300Vpk 310.0 146 142.0 162.3 LEVEL CH 1 1M 300V 15pF CAT MAX. 300Vpk 149.
PAGE 147
APPENDIX EC 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.
PAGE 148
GDS-1000A-U Series User Manual INDEX 2M memory length limits ....... 110 AC coupling ............................... 92 Accumulating waveform.......... 83 Acquisition ................................. 78 menu tree ....................................... 25 specification ................................. 142 Addition ..................................... 64 Amplitude measure .................. 55 Auto set....................................... 49 exception ........................................
PAGE 149
INDEX pollution degree............................ 11 faq ................................................. 137 Environment............................. 143 High voltage measure ............... 55 Holdoff ........................................ 98 Horizontal ................................... 85 safety instructions ........................ 10 Equivalent time sampling......... 82 Expand Center ........................... 92 Expand Ground ......................... 92 External trigger ..................
PAGE 150
GDS-1000A-U Series User Manual Preshoot voltage measure ........ 56 Print ........................................... 131 Probe ......................................... 135 attenuation level ........................... 94 attenuation menu tree .................. 25 compensation menu tree ............. 43 compensation signal overview... 53 faq.................................................. 138 peak detect demonstration.......... 79 Pulse time measure ................... 56 Pulse width trigger ..........
PAGE 151
INDEX expand waveform ........................ 92 file format .................................... 109 invert waveform ........................... 93 Memory depth ............................ 110 recall ............................................. 127 recall menu tree ............................ 33 roll mode ........................................ 86 save ............................................... 119 save menu tree .............................. 35 x-y mode ..................................