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- Page 1 Teledyne LeCroy WaveSurfer 454 Manual Get Pricing & Availability at ApexWaves.com Call Today: 1-800-915-6216 Email: sales@apexwaves.com https://www.apexwaves.com/oscilloscopes/teledyne-lecroy/wavesurfer-400-series/WaveSurfer%20454...
- Page 2 URFER SCILLOSCOPE O P E R A T O R ’ S M A N U A L 2007 E B R U A RY...
- Page 3 © 2007 by LeCroy Corporation. All rights reserved. LeCroy, ActiveDSO, WaveLink, JitterTrack, WavePro, WaveMaster, WaveSurfer, WaveExpert, WaveJet, and Waverunner are registered trademarks of LeCroy Corporation. Other product or brand names are trademarks or requested trademarks of their respective holders. Information in this publication supersedes all earlier versions.
- Page 4 WS-OM-E Rev B...
- Page 5 Toxic or Hazardous Substances and Elements Hexavalent Polybrominated Polybrominated Lead Mercury Cadmium Chromium Biphenyls Diphenyl Ethers Part Name (Pb) (Hg) (Cd) (PBB) (PBDE) PCBAs Mechanical Hardware Sheet Metal Plastic Parts Cable Assemblies Display Power Supply Fans Battery for Processor Power Cord Ext Power Supply (if present) Probes (if present) CD Drive (if present)
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Page 6: Table Of Contents
RETURNING A PRODUCT FOR SERVICE OR REPAIR........9 TECHNICAL SUPPORT ..................9 STAYING UP-TO-DATE ..................9 WARRANTY .......................10 COPYRIGHT.......................10 Windows License Agreement......................11 END-USER LICENSE AGREEMENT FOR LECROY® X-STREAM SOFTWARE ......11 VIRUS PROTECTION..................18 SPECIFICATIONS ....................18 Vertical System ..........................18 Horizontal System .......................... 19 Acquisition System......................... 19 Acquisition Processing ........................ - Page 7 Operator's Manual Pass/Fail Testing ..........................24 General............................24 Warranty and Service........................24 Environmental Characteristics .......................25 Temperature ........................... 25 Humidity ..........................25 Altitude ............................ 25 Random Vibration ........................25 Shock ............................25 Certifications...........................25 CE Declaration of Conformity ....................25 SAFETY REQUIREMENTS ................26 Safety Symbols and Terms ......................26 Operating Environment ........................27 Cooling Requirements........................28 AC Power Source...........................28...
- Page 8 WaveSurfer DSO Dialog Area ..........................39 INSTALLATION ....................40 Hardware Installation ........................40 Instrument I/O Panel ....................... 40 Software ............................40 Checking the Scope Status ....................40 Default Settings..........................41 WaveMaster and WavePro 7000 Series DSOs..............41 DDA, SDA, and WaveRunner DSOs....................41 Adding a New Option ........................
- Page 9 Operator's Manual To Set Up Channel Deskew ....................49 TIMEBASE AND ACQUISITION SYSTEM............49 Timebase Setup and Control ......................49 Dual Channel Acquisition .......................50 Combining of Channels......................50 Autosetup ............................50 TRIGGERING .....................50 Simple Triggers ..........................50 Edge Trigger on Simple Signals ..................... 50 Control Edge Triggering......................
- Page 10 WaveSurfer DSO To Recall Default Settings ...................... 79 Saving Screen Images ........................79 Saving and Recalling Waveforms ....................80 Saving Waveforms........................80 Recalling Waveforms......................81 Disk Utilities............................ 82 To Delete a Single File ......................82 To Delete All Files in a Folder....................82 To Create a Folder........................
- Page 11 Operator's Manual Level and Slope ........................97 List of Parameters ..........................98 WAVEFORM MATH ..................104 Introduction to Math Traces and Functions..................104 Two-input Math Functions ....................104 Chaining of Math Functions ....................105 Zooming a Math Function ..................... 105 FFT...............................106 Why Use FFT?........................106 Power (Density) Spectrum....................
- Page 12 WaveSurfer DSO Options ............................121 Preferences..........................121 Audible Feedback ......................... 121 Auto-calibration ........................121 Language Selection for User Interface ................. 121 Offset Control ..........................121 Delay Control ........................122 E-mail............................ 122 Acquisition Status.........................123 Service ............................123 Show Windows Desktop ......................123 Touch Screen Calibration ......................123...
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Page 13: How To Use On-Line Help
Index displays an alphabetical listing of keywords. Search locates every occurrence of the keyword that you enter. www.LeCroy.com connects you to LeCroy's Web site where you can find Lab Briefs, Application Notes, and other useful information. This feature requires that the instrument be connected to the internet through the Ethernet port on the scope's rear panel. -
Page 14: Windows Help
Windows task bar at the bottom of the screen and selecting Help. RETURNING A PRODUCT FOR SERVICE OR REPAIR If you need to return a LeCroy product, identify it by its model and serial numbers. Describe the defect or failure, and give us your name and telephone number. -
Page 15: Warranty
The instrument is warranted for normal use and operation, within specifications, for a period of three years from shipment. LeCroy will either repair or, at our option, replace any product returned to one of our authorized service centers within this period. However, in order to do this we must first examine the product and find that it is defective due to workmanship or materials and not due to misuse, neglect, accident, or abnormal conditions or operation. -
Page 16: Windows License Agreement
Manufactured under an ISO 9000 Registered Quality Management System Windows License Agreement LeCroy's agreement with Microsoft prohibits users from running software on LeCroy X-Stream oscilloscopes that is not relevant to measuring, analyzing, or documenting waveforms. END-USER LICENSE AGREEMENT FOR LECROY® X-STREAM SOFTWARE IMPORTANT-READ CAREFULLY: THIS END-USER LICENSE AGREEMENT (“EULA”) IS A... - Page 17 License will not take effect, and you will have no right to use or access the Software Product unless you are properly licensed to use a product identified by LeCroy as being eligible for the upgrade (“Underlying Product”). A Software Product labeled as an “upgrade” replaces and/or supplements the Underlying Product.
- Page 18 Permitted Objective; (C) the information to be gained thereby has not already been made readily available to you or has not been provided by LeCroy within a reasonable time after a written request by you to LeCroy to provide such information; (D) the information gained is not used for any purpose other than the Permitted Objective and is not disclosed to any other person except as may be necessary to achieve the Permitted Objective;...
- Page 19 Software Product and will be subject to the terms and conditions of this EULA. LeCroy may use any technical information you provide to LeCroy during LeCroy’s provision of Support Services, for LeCroy’s business purposes, including for product support and development.
- Page 20 Documentation) and other proprietary information of LeCroy; and any business, marketing or technical information disclosed by LeCroy, or its representatives, or you in relation to this EULA, and either (i) disclosed in writing and marked as confidential at the time of disclosure or (ii) disclosed in any other manner such that a reasonable person would understand the nature and confidentiality of the information.
- Page 21 It is your responsibility to comply with the latest United States export regulations, and you will defend and indemnify LeCroy from and against any damages, fines, penalties, assessments, liabilities, costs and expenses...
- Page 22 LeCroy, its agents, or employees, but only by an instrument in writing signed by an authorized officer of LeCroy. No waiver by LeCroy of any breach or default of any provision of this EULA by you will be effective as to any other breach or default, whether of the same or any other provision and whether occurring prior to, concurrent with, or subsequent to the date of such waiver.
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Page 23: Virus Protection
200 MHz WaveSurfer 432 and 434 350 MHz WaveSurfer 452 and 454 500 MHz Input Channels: 4 (WaveSurfer 424, 434, 454); 2 (WaveSurfer 422, 432, 452) Rise Time (typical): WaveSurfer 422 and 424 1.75 ns WaveSurfer 432 and 434 1.00 ns... -
Page 24: Horizontal System
WaveSurfer DSO Sensitivity: 50 ohms: 1 mV/div to 2 V/div; 1 Mohms: 1 mV/div to 10 V/div DC Gain Accuracy: +/-(1.5% + 0.5% of full scale) Offset Range: +/-1 V @ 1.0 mV to 49 mV/div +/-10 V @ 50 mV to 0.49 V/div +/-100 V @ 0.5 V to 10 V/div... -
Page 25: Triggering System
Operator's Manual Enhanced Resolution (ERES) -- optional with MathSurfer package: from 8.5 to 11 bits vertical resolution Envelope (Extrema) -- optional with MathSurfer package: Envelope, floor, roof for up to 1 million sweeps Triggering System Modes: Normal, Auto, Single, and Stop Sources: Any input channel, External, Ext/10, or Line;... -
Page 26: Smart Triggers -- Optional
WaveSurfer DSO SMART Triggers -- Optional Runt: Triggers on positive or negative runts defined by two voltage limits and two time limits. Select between 2 ns and 20 ns. Includes exclusion mode (trigger on intermittent faults by specifying the normal width period). -
Page 27: Probing
Networking: Standard 10/100Base-T Ethernet interface (RJ-45 connector). Connect to any network using DHCP with automatically assigned IP address. Remote Control: Via LeCroy Remote Command Set (via Ethernet) USB Ports: 3 USB ports (one on front of instrument) support Windows compatible devices... -
Page 28: Rapid Signal Processing
WaveSurfer DSO Rapid Signal Processing Processor: Intel Celeron 850 with MS WindowsXP Embedded platform Internal Waveform Memory Waveform: M1, M2, M3, M4 (Store full-length waveforms with 16 bits/data point.) Or save to any number of files (limited only by data storage media). -
Page 29: Pass/Fail Testing
Operator's Manual amplitude overshoot- area overshoot+ base peak-to-peak delay period duty cycle rise 20-80% fall 80-20% rise time (10-90% fall time (90-10%) frequency skew maximum std. deviation mean minimum width Pass/Fail Testing Test multiple parameters against selectable parameter limits at the same time. Pass or fail conditions can initiate actions including: document to local or networked files, email the image of the failure, save waveforms, or send a pulse out at the front panel auxiliary BNC output. -
Page 30: Environmental Characteristics
WaveSurfer DSO Environmental Characteristics Temperature Operating: 5 to 40 °C Storage (non-operating): -20 to +60 °C Humidity Operating: 5 to 80% RH (non-condensing) at or below 30 °C; upper limit derates linearly to 55% RH (non-condensing) at 40 °C Storage (non-operating): 5 to 95% RH (non-condensing) as tested per MIL-PRF-28800F Altitude Operating: Up to 3048 m (10,000 ft) at or below 25 °C... -
Page 31: Safety Requirements
Operator's Manual Low Voltage 73/23/EEC Directive: EN 61010-1:2001 Product Safety Safety requirements for electrical equipment for measurement, control, and laboratory use. Installation Category II Pollution Degree 2 Protection Class 1 SAFETY REQUIREMENTS This section contains information and warnings that must be observed to keep the instrument operating in a correct and safe condition. -
Page 32: Operating Environment
WaveSurfer DSO CAUTION The CAUTION sign indicates a potential hazard. It calls attention to a procedure, practice or condition which, if not followed, could possibly cause damage to equipment. If a CAUTION is indicated, do not proceed until its conditions are fully understood and met. -
Page 33: Cooling Requirements
Operator's Manual expected. Protection Class I refers to a grounded equipment, in which protection against electric shock is achieved by Basic Insulation and by means of a connection to the protective ground conductor in the building wiring. CAUTION Do not connect or disconnect probes or test leads while they are connected to a voltage source. -
Page 34: Power And Ground Connections
WaveSurfer DSO Power and Ground Connections The instrument is provided with a grounded cord set containing a molded three-terminal polarized plug and a standard IEC320 (Type C13) connector WARNING for making line voltage and safety ground Electrical Shock Hazard! connection. The AC inlet ground terminal is connected directly to the frame of the instrument. -
Page 35: Calibration
Operator's Manual Calibration The recommended calibration interval is one year. Calibration should be performed by qualified personnel only. Cleaning Clean only the exterior of the instrument, using a damp, soft cloth. Do not use chemicals or abrasive elements. Under no circumstances allow moisture WARNING to penetrate the instrument. -
Page 36: Trigger Control
WaveSurfer DSO Trigger Control: The level knob selects the trigger threshold level. Push this knob to quickly find the level, which is indicated in the Trigger descriptor label Press Auto to display your trace. Auto triggers the scope after a time-out, even if the trigger conditions are not met. -
Page 37: Vertical Control
Operator's Manual Vertical Control: The Vertical Offset knob adjusts the vertical offset of a channel. Press the knobs to quickly set the offset to zero for the selected channel. When Zoom is selected, this button is used to position the zoom trace vertically on the grid. The Volts/Division knob sets the vertical gain of the channel selected. -
Page 38: Special Features
WaveSurfer DSO Special Features: Auto Setup automatically sets the scope's horizontal timebase (acquisition system), vertical gain and offset, as well as trigger conditions, to display a wide variety of signals. Analog Persist provides a three dimensional view of the signal: time, voltage, and a third dimension related to the frequency of occurrence, as shown by a color- graded (thermal) or intensity-graded (analog) display. -
Page 39: On-Screen Toolbars, Icons, And Dialog Boxes
Operator's Manual Example Data Entry Field Note: You can set the granularity (delta) of the coarse adjustment by double-tapping inside the data entry field, then touching the Advanced checkbox in the pop-up numeric keypad. The keypad presents Coarse delta up/down buttons to set the delta: In the pop-up keypad, be sure to leave the Fine checkbox unchecked to adjust the coarse delta. -
Page 40: Dialog Boxes
WaveSurfer DSO pressed. If you want to perform an Undo operation, it must be the very next operation after you perform the Autosetup or QuickZoom operation. Dialog Boxes The dialog area occupies the bottom one-third of the screen. To expand the signal display area, you can minimize each dialog box by touching the Close tab at the right of the dialog box. -
Page 41: Trace Descriptors
Operator's Manual Trace Descriptors Vertical and horizontal trace descriptors (labels) are displayed below the grid. They provide a summary of your channel, timebase, and trigger settings. To make adjustments to these settings, touch the respective label to display the setup dialog for that function. Channel labels need to be touched twice unless they are active. -
Page 42: Trace Annotation
WaveSurfer DSO Trace Annotation The instrument gives you the ability to add an identifying label, bearing your own text, to a waveform display: For each waveform, you can create multiple labels and turn them all on or all off. Also, you can position them on the waveform by dragging or by specifying an exact horizontal position. -
Page 43: To Turn On A Trace
Operator's Manual Note 1: If the dialog for the trace you want to annotate is currently displayed, you can touch the label button at the bottom to display the Trace Annotation setup dialog. Note 2: You may place a label anywhere you want on the waveform. Labels are numbered sequentially according to the order in which they are added, and not according to their placement on the waveform. -
Page 44: Screen Layout
WaveSurfer DSO bottom of the Vertical Adjust dialog: Whenever you turn on a channel, math, or memory trace via the menu bar, the dialog at the bottom of the screen automatically switches to the vertical setup or math setup dialog for that selection. -
Page 45: Installation
Operator's Manual INSTALLATION Hardware Installation Instrument I/O Panel (1) Centronics Port; (2) Ethernet Port; (3) Mouse; (4) Keyboard; (5) USB Ports; (6) RS-232-C Port; (7) External VGA Monitor; (8) Line In; (9) Speakers; (10) Microphone Software Checking the Scope Status To find out the scope's software and hardware configuration, including software version and installed options, proceed as follows: WS-OM-E Rev B... -
Page 46: Default Settings
WaveSurfer DSO 1. In the menu bar, touch 2. Touch the tab. You can find information related to hard drive memory, etc. as follows: 1. Minimize the instrument application by touching , then selecting Minimize in the drop-down menu. 2. Touch the Start taskbar button and, per usual Windows® operation, open Windows Explorer. -
Page 47: Adding A New Option
Adding a New Option To add a software option you need a key code to enable the option. Call your local salesman or LeCroy Customer Support to place an order and receive the code. To add the software option do the following: 1. -
Page 48: Restoring Software
WaveSurfer DSO Restoring Software Restarting the Application Upon initial power-up, the scope will load the instrument application software automatically. If you exit the application and want to reload it, touch the shortcut icon on the desktop: If you minimize the application, touch the appropriate task bar or desktop button to maximize it: Restarting the Operating System If you need to restart the Windows®... -
Page 49: Auxiliary Output Signals
Operator's Manual Auxiliary Output Signals In addition to a standard 1 V, 1 kHz calibration signal on the front panel, the following signals can be output through the AUX OUTPUT connector at the rear of the scope: Trigger Out -- can be used to trigger another scope. Trigger Enabled -- can be used as a gating function to trigger another instrument when the scope is ready. -
Page 50: Single-Shot Sampling Mode
WaveSurfer DSO Single-shot sampling mode Basic Capture Technique A single-shot acquisition is a series of digitized voltage values sampled on the input signal at a uniform rate. It is also a series of measured data values associated with a single trigger event. -
Page 51: Roll Mode
Operator's Manual The instrument requires multiple triggers to complete an acquisition. The number depends on the sample rate: the higher the sample rate, the more triggers are required. It then interleaves these segments (see figure) to provide a waveform covering a time interval that is a multiple of the maximum single-shot sampling rate. -
Page 52: Vertical Settings And Channel Controls
WaveSurfer DSO VERTICAL SETTINGS AND CHANNEL CONTROLS Adjusting Sensitivity and Position To Adjust Sensitivity Press the appropriate channel push button, for example to select channel 1. Or touch the channel descriptor label. Turn the volts per division knob for the selected channel. Or you can touch inside the Volts/Div field in the channel setup dialog and type in a value using the pop-up keypad, or use the up/down arrows. -
Page 53: Probe Attenuation
Probe Attenuation To Set Probe Attenuation LeCroy's ProBus® system automatically senses probes and sets their attenuation for you. If you want to set the attenuation manually, 1. In the menu bar, touch Vertical, then select a channel from the drop-down menu. -
Page 54: Finding Scale
WaveSurfer DSO Finding Scale You can access the Find Scale button from the channel setup dialog. This feature automatically calculates peak-to-peak voltage, and chooses an appropriate Volts/Div scale to fully display the waveform. To Use Find Scale 1. Touch the trace label for the waveform you desire. -
Page 55: Dual Channel Acquisition
Operator's Manual Dual Channel Acquisition Combining of Channels During 4-channel operation, channels 1 and 2 or channels 3 and 4 are automatically combined to increase sample rate, memory, or both in order to capture and view a signal in all its detail. To maximize sampling rate when using only two channels, choose either channel 1 or 2 and either channel 3 or 4. -
Page 56: To Set Up An Edge Trigger
WaveSurfer DSO Post-trigger delay is indicated by a left-pointing arrow below-left of the grid . The time value is given in the title line of the TimeBase label below-right of the grid. Vertical: Turn the Level knob in the TRIGGER control group to adjust the trigger's vertical threshold. - Page 57 Operator's Manual Max. 1.000 V Default 0 mV Min. 1.000 V 5. Select the holdoff by touching the Time or Events buttons . Using the pop-up numeric keypad, enter a value and specify the unit of time , or use the up/down buttons to increase or decrease the time value in increments of 200 ps.
- Page 58 WaveSurfer DSO The preset Time values are as follows: Max. 20.0 s Default 50.0 ns Min. 2 ns The preset Events values are as follows: Max. 1,000,000,000 events Default 1 event Min. 1 event 6. Choose Positive or Negative slope:...
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Page 59: Smart Triggers
Operator's Manual SMART Triggers Width Trigger Width trigger allows you to define a positive- or negative-going pulse width bounded by a voltage level, above or below which a trigger will occur. You can specify a pulse width and voltage range, within or outside of which a trigger will occur. -
Page 60: Glitch Trigger
WaveSurfer DSO Alternatively, touch the Limits button to set up a precise pulse-width range. Touch inside the Lower Limit and Upper Limit data entry fields and enter values using the pop-up keypads. Or touch the OutOfRange button and perform the same range setups as for InRange triggering. -
Page 61: Interval Trigger (Optional With Ws-Advtrig Package)
Operator's Manual The broken upward-pointing arrow indicates a potential trigger, while the bold one shows where the actual trigger occurs. To Set Up Glitch Trigger 1. In the menu bar, touch Trigger, then Trigger Setup... in the drop-down menu. 2. Touch the Smart Trigger button. 3. - Page 62 WaveSurfer DSO Interval Trigger that triggers when the interval width is smaller than the selected interval. The broken, upward-pointing arrow indicates a potential trigger, while the bold one shows where the actual trigger occurs on the positive edge within the selected interval.
- Page 63 Operator's Manual Interval Trigger that triggers when the interval width is larger than the set interval. The broken upward-pointing arrow indicates a potential trigger, while the bold one shows where the actual trigger occurs on the positive edge after the selected interval. Interval In Range: This Interval Trigger is generated whenever an interval between two edges of the same slope falls within a selected range.
- Page 64 WaveSurfer DSO Interval Trigger that triggers when the interval falls within the selected range: t1 = range's lower time limit; t2 = range's upper limit. The broken upward-pointing arrow indicates a potential trigger, while the bold one indicates where the actual trigger occurs on the positive edge within the selected range.
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Page 65: Qualified Trigger (Optional With Ws-Advtrig Package)
Operator's Manual 8. Touch the Delta button to set up a nominal range, plus or minus a delta value, in seconds. Touch inside the Nominal Width and Delta data entry fields and enter values using the pop-up numeric keypads. Touch the Limits button to set up a precise range. - Page 66 WaveSurfer DSO Edge Qualified and Wait: Trigger after timeout. The broken upward-pointing arrows indicate potential triggers, while the bold ones show where the actual triggers occur. To Set Up an Edge Qualified Trigger 1. In the menu bar, touch Trigger, then Trigger Setup... in the drop-down menu.
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Page 67: State Trigger
Operator's Manual 7. Touch inside the field below the Qualify by: buttons and enter a value using the numeric keypad. State Trigger To Set Up a State Qualified Trigger State trigger is another Qualified trigger; however, instead of using the edges of the qualifying inputs, State trigger uses the logic state of the inputs to qualify the trigger. -
Page 68: Dropout Trigger (Optional With Ws-Advtrig Package)
WaveSurfer DSO 4. Touch inside the Trigger On data entry field and select a source on which to trigger: 5. Select Positive or Negative slope. 6. Touch inside the has gone data entry field and select the qualifying signal source from the pop-up menu. - Page 69 Operator's Manual How Dropout Trigger Works Dropout Trigger: occurs when the timeout has expired. The bold upward-pointing arrows show where the trigger occurs. To Set Up Dropout Trigger 1. In the menu bar, touch Trigger, then Trigger Setup... in the drop-down menu. 2.
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Page 70: Logic Trigger
WaveSurfer DSO 5. Select Positive or Negative slope. 6. Touch inside the Level field and enter a voltage value. 7. Touch inside the Trigger after timeout data entry field and enter a time window using the pop-up numeric keypad. Logic Trigger... - Page 71 Operator's Manual Logic Applications Logic Trigger can be used in digital design for the testing of complex logic inputs or data transmission buses. To Set Up Logic Trigger 1. In the menu bar, touch Trigger, then Trigger Setup... in the drop-down menu. 2.
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Page 72: Runt Trigger (Optional With Ws-Advtrig Package)
WaveSurfer DSO 5. For each input you want to include in the logic pattern, touch inside the State field and select a logic state: Low or High. Select Don't Care for all other inputs. 6. Touch inside the Level data entry field for each input included in the pattern and enter a voltage level threshold using the pop-up numeric keypad. - Page 73 Operator's Manual Runt Trigger triggers when a pulse crosses the first threshold but not the second before recrossing the first (indicated by the bold, upward pointing arrows). To Set Up Runt Trigger 1. In the menu bar, touch Trigger, then Trigger Setup... in the drop-down menu. 2.
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Page 74: Slew Rate Trigger (Optional With Ws-Advtrig Package)
WaveSurfer DSO entry fields, using the pop-up numeric keypads. Touch the Limits button to set up a precise range. Enter time values into the Lower Limit and Upper Limit data entry fields, using the pop-up numeric keypads. Slew Rate Trigger (optional with WS-ADVTRIG package) -
Page 75: Tv Trigger
TV Trigger The WaveSurfer DSO's TV triggers provide stable triggering on standard or custom composite video signals. Use them on PAL, SECAM, or NTSC systems. A composite video signal on the trigger input is analyzed to provide a signal for the beginning of the chosen field any, odd, or even and for a signal at the beginning of each line. -
Page 76: Display Formats
WaveSurfer DSO 3. Touch inside the Type field and select TV trigger 4. Touch inside the Touch inside the Trigger On data entry field and select a source on which to trigger. 5. Select Positive or Negative slope. 6. Touch the Trigger on Line ANY checkbox if it is not important to specify any particular line. -
Page 77: Persistence Setup
Operator's Manual from the timebase). 5. Choose a line style for your trace: solid Line or Points Persistence Setup The analog Persistence feature helps you display your waveform and reveal its idiosyncrasies or anomalies for a repetitive signal. Use Persistence to accumulate on-screen points from many acquisitions to see your signal change over time. -
Page 78: Show Last Trace
WaveSurfer DSO Color mode persistence, selected by touching the Color icon , works on the same principle as the Analog persistence feature, but instead uses the entire color spectrum to map signal intensity: violet for minimum population, red for maximum population. A saturation level of 100% spreads the intensity variation across the entire distribution;... -
Page 79: Screen Saver
Operator's Manual menu. 5. To turn off persistence, uncheck the Persistence On checkbox. Screen Saver The Windows screen saver is activated in the same way as for any PC. 1. Minimize the instrument display by touching File in the menu bar, then Minimize in the drop-down menu. -
Page 80: To Zoom A Single Waveform
WaveSurfer DSO panel A knob. Therefore, if you push the A knob to enable Fine (variable) adjust, the Var. DJUST DJUST checkbox will automatically become checked once you start rotating the knob. Conversely, if you check or uncheck the Var. checkbox, the A knob will reconfigure itself accordingly. -
Page 81: To Zoom By Touch-And-Drag
Operator's Manual 3. To vary the degree of zoom, touch the newly created Zx trace label. The setup dialog for the zoom trace opens. It shows the current horizontal and vertical zoom values. 4. Touch inside the Horizontal or Vertical Scale/div field to highlight it, then turn the front panel A knob (or the Horizontal Time/Div or Vertical Volts/Div knobs) to change the DJUST... -
Page 82: Xy Display
WaveSurfer DSO 2. To turn off zooms selectively, touch the Zx trace label for the zoom you want to turn off. The zoom setup dialog opens. 3. Touch the Trace On checkbox to delete the check mark and disable the zoom trace. -
Page 83: Save And Recall
Operator's Manual SAVE AND RECALL Saving and Recalling Scope Settings You can save or recall scope settings to or from hard disk, floppy disk, or LAN location. To Save Scope Settings 1. In the menu bar, touch File; then touch Save Setup... in the drop-down menu. Or, press the Save/Recall front panel button, then touch the "Save Setup"... -
Page 84: To Recall Default Settings
WaveSurfer DSO To Recall Default Settings 1. In the menu bar, touch File; then touch Recall Setup... in the drop-down menu. 2. Touch the button under Recall Default Setup The default settings are as follows: Vertical Timebase Trigger 50 mV/div 50.0 ns/div DC50 or AC1M (model dependent), C1, 0 mV trigger level 0 V offset 5.0 or 10.0 GS/s... -
Page 85: Saving And Recalling Waveforms
Operator's Manual In addition to saving the image to file, you can also print out the image from a network or local printer, copy it to clipboard, or email the image. Saving and Recalling Waveforms Saving Waveforms Quick Save to Internal Memory Use this method to quickly store a channel trace in an internal memory location and to display it: 1. -
Page 86: Recalling Waveforms
WaveSurfer DSO If you need to use a number in your waveform's name, it is recommended that you append an alpha character at the end of the number : "XYZ32a" for example. 1. If you are saving to file, touch the Data Format field and select a format type from the... -
Page 87: Disk Utilities
Operator's Manual 2. In the "Recall Waveform" dialog, touch the Recall From button. A. If you selected Memory, touch inside the Source field and select a memory location: M1 to M4. B. If you selected File, touch inside the Destination field and select a memory location in which to store the file. -
Page 88: To Create A Folder
WaveSurfer DSO 3. Touch inside the Current folder data entry field and use the pop-up keyboard to enter the path to the folder that contains the file you want to delete. Or touch the Browse button and navigate to the folder. -
Page 89: Changing The Default Printer
Operator's Manual Hardcopy dialog opens. 2. In the dialog area, touch the Printer icon 3. Touch the Add Printer button. An MS Windows® window with which to add a printer will open. 4. Touch the Properties button to change printer properties such as number of copies. Changing the Default Printer 1. -
Page 90: 100Base-T Ethernet Connection
WaveSurfer DSO 100BASE-T ETHERNET CONNECTION Connecting to a Network Use the Ethernet connector (item 2 in the I/O panel diagram) to connect the instrument to a network: Communicating over the Network The instrument uses Dynamic Host Configuration Protocol (DHCP) as its addressing protocol. -
Page 91: Windows Setups
Please follow these recommendations: 1. Do not load any version of Windows not provided by LeCroy. If you load any Windows XPe service packs from Microsoft, please be advised that LeCroy cannot guarantee trouble-free operation afterwards. -
Page 92: Waveform Measurements
WaveSurfer DSO WAVEFORM MEASUREMENTS Measuring with Cursors Cursors are important tools that aid you in measuring signal values. Cursors are markers — lines, cross-hairs, or arrows — that you can move around the grid or the waveform itself. Use cursors to make fast, accurate measurements and to eliminate guesswork. -
Page 93: Full Setup
Operator's Manual 2. Turn the upper and lower cursor control knobs to reposition the cursors on the grid. Push these buttons in at any time to return the cursors to their default starting positions. 3. Touch Track On in the menu bar Cursors drop-down menu if you want the cursors to move in unison under the control of a single cursor knob. -
Page 94: To Turn On Parameters
WaveSurfer DSO There are parameter modes for the amplitude and time domains, custom parameter groups, and parameters for pass and fail testing. You can make common measurements on one or more waveforms. To Turn On Parameters Press the Measure front panel button; or, touch Measure in the menu bar, then Measure Setup... -
Page 95: Using X-Stream Browser To Obtain Status Information
Operator's Manual Using X-Stream Browser to Obtain Status Information Example: Here is a case of an overflow condition, in which the amplitude of the waveform cannot be determined: 1. Minimize the scope display by selecting File Minimize. 2. Touch the X-Stream Browser desktop icon to open the browser. -
Page 96: Statistics
WaveSurfer DSO 5. Read the status information in line StatusDescription. Statistics By touching the Statistics On checkbox in the "Measure" dialog, you can display statistics for standard vertical or horizontal parameters, or for custom parameters. The statistics that are displayed are as follows:... -
Page 97: Measure Gate
Operator's Manual For any parameter that computes on every event, the value displayed is equal to the number of events per acquired waveform. If x waveforms were acquired, the value represents x times the number of cycles per waveform. Also, the "value" is equal to the measurement of the last cycle on the last acquisition. -
Page 98: To Set Up Measure Gate
WaveSurfer DSO To Set Up Measure Gate 1. In the menu bar, touch Measure Setup... 2. Touch inside the Start data entry field and enter a value, using the front panel A DJUST knob or pop-up numeric keypad. Or, you can simply touch the leftmost grid line and drag the gate post to the right. -
Page 99: Parameter Calculations
Operator's Manual 5. Select another “Px” location and parameter, or touch Close. Parameter Calculations Parameters and How They Work Determining Top and Base Lines Proper determination of the top and base reference lines is fundamental for ensuring correct parameter calculations. The analysis begins by computing a histogram of the waveform data over the time interval spanned by the left and right time cursors. -
Page 100: Determining Time Parameters
WaveSurfer DSO Threshold levels for rise or fall time can also be selected using absolute or relative settings (r@level, f@level). If absolute settings are chosen, the rise or fall time is measured as the time interval separating the two crossing points on a rising or falling edge. But when relative settings... -
Page 101: Determining Differential Time Measurements
Operator's Manual Figure 2 Determining Differential Time Measurements The DDA-5005 enables accurate differential time measurements between two traces: for example, propagation, setup and hold delays (see Figure 3). Parameters such as Delta c2d± require the transition polarity of the clock and data signals to be specified. -
Page 102: Level And Slope
WaveSurfer DSO Figure 3 Moreover, a hysteresis range may be specified to ignore any spurious transition that does not exceed the boundaries of the hysteresis interval. In Figure 3, Delta c2d- (1, 2) measures the time interval separating the rising edge of the clock (trigger) from the first negative transition of the data signal. -
Page 103: List Of Parameters
Operator's Manual List of Parameters The following table describes the instrument parameters. Availability of some parameters depends on the options installed. See the comments in the "Notes" column of the table. Parameter Description Definition Notes Amplitude Measures the difference top base On signals not having between upper and lower levels two major levels (such... - Page 104 WaveSurfer DSO Fall time Fall time: Duration of falling Time at upper threshold On signals not having edge from 90-10%. minus two major levels (triangle or saw-tooth Time at lower threshold waves, for example), top and base can averaged over each...
- Page 105 Operator's Manual Maximum Measures highest point in Highest value in Gives similar result waveform. Unlike top, does not waveform between when applied to time assume waveform has two cursors domain waveform or levels. histogram of data of same waveform. But with histograms, result may include contributions from more...
- Page 106 WaveSurfer DSO Overshoot+ Overshoot positive: Amount of (max. top)/ampl x 100 Waveform must contain overshoot following a rising edge at least one rising specified as percentage of edge. On signals not amplitude. having two major levels (triangle or saw-tooth waves, for example), may not give predictable results.
- Page 107 Operator's Manual Rise Rise time: Duration of rising Time at lower threshold On signals not having edge from 10-90%. minus two major levels (triangle or saw-tooth Time at upper threshold waves, for example), top and base can averaged over each default to maximum rising edge and minimum, giving,...
- Page 108 WaveSurfer DSO of 100 periods. Skew Time of clock1 edge minus time Reference levels and of nearest clock2 edge. edge-transition polarity can be selected. Hysteresis argument used to discriminate levels from noise in data. Hysteresis on a measurement (if set to...
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Page 109: Waveform Math
Operator's Manual Higher of two most probable Value of most probable Gives similar result states, the lower being base; it is higher state when applied to time characteristic of rectangular domain waveform or waveforms and represents the histogram of data of higher most probable state same waveform. -
Page 110: Chaining Of Math Functions
WaveSurfer DSO Chaining of Math Functions This is an optional feature with the MathSurfer package. 1. Push the Math front panel button to display the Math setup dialog. 2. Touch the Dual (function of a function) button if the FFT is to be of the result of another math operation. -
Page 111: Fft
Operator's Manual Why Use FFT? For a large class of signals, you can gain greater insight by looking at spectral representation rather than time description. Signals encountered in the frequency response of amplifiers, oscillator phase noise and those in mechanical vibration analysis, for example, are easier to observe in the frequency domain. -
Page 112: Fft Pitfalls To Avoid
This variation in spectrum magnitude is the picket fence effect. The corresponding attenuation loss is referred to as scallop loss. LeCroy scopes automatically correct for the scallop effect, ensuring that the magnitude of the spectra lines correspond to their true values in the time domain. - Page 113 Operator's Manual Rectangular windows provide the highest frequency resolution and are thus useful for estimating the type of harmonics present in the signal. Because the rectangular window decays as a (sinx)/x function in the spectral domain, slight attenuation will be induced. Alternative functions with less attenuation (Flat Top and Blackman-Harris) provide maximum amplitude at the expense of frequency resolution.
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Page 114: Improving Dynamic Range
ERES low-pass filter and the noise shape (frequency distribution). LeCroy digital oscilloscopes employ FIR digital filters so that a constant phase shift is maintained. The phase information is therefore not distorted by the filtering action. - Page 115 Operator's Manual = –I The energy of the signal at a frequency n is distributed equally between the first and the second halves of the spectrum; the energy at frequency 0 is completely contained in the 0 term. The first half of the spectrum (Re, Im), from 0 to the Nyquist frequency is kept for further processing and doubled in amplitude: = 2 x R _0 n <...
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Page 116: Glossary
WaveSurfer DSO 6. The FFT Power Average takes the complex frequency-domain data R' and I' for each spectrum generated in Step 5, and computes the square of the magnitude: = R' + I' then sums M 2 and counts the accumulated spectra. The total is normalized by the number of spectra and converted to the selected result type using the same formulas as are used for the Fourier Transform. - Page 117 Operator's Manual Frequency Bins The FFT algorithm takes a discrete source waveform, defined over N points, and computes N complex Fourier coefficients, which are interpreted as harmonic components of the input signal. For a real source waveform (imaginary part equals 0), there are only N/2 independent harmonic components.
- Page 118 WaveSurfer DSO Number of Points The FFT is computed over the number of points (Transform Size) whose upper bounds are the source number of points, and by the maximum number of points selected in the menu. The FFT generates spectra of N/2 output points.
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Page 119: Fft Setup
Operator's Manual The table of Coefficients of Window Functions lists the coefficients a . The window functions seen in the time domain are symmetric around the point k = N/2. Coefficients of Window Functions Window Type Rectangular Hanning (Von –0.5 Hann) Hamming 0.54... -
Page 120: Actions
WaveSurfer DSO Actions You can decide the actions to occur upon your waveforms' passing or failing, by selecting one or all of the following: • stop • audible alarm • print image of display • emit pulse • save waveform... - Page 121 Operator's Manual This selection means, for example, that if you select All Out the test will be False if even a single waveform falls inside the mask. 4. From Show Markers, choose whether or not to have mask violations displayed. 5.
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Page 122: Utilities
WaveSurfer DSO UTILITIES Status The status read-only dialog displays system information including serial number, firmware version, and installed software and hardware options. To Access Status Dialog 1. In the menu bar, touch Utilities. 2. Touch the Status tab. Remote communication The Remote dialog is where you can select a network communication protocol, establish network connections, and configure the Remote Control Assistant log. -
Page 123: Hardcopy
Operator's Manual 3. Touch inside the Log Mode data entry field. 4. Select Off, Errors Only, or Full Dialog from the pop-up menu. 5. To export the contents of the event log to an ASCII text file, touch the Show Remote Control Log button: the "Event Logs"... -
Page 124: E-Mail
WaveSurfer DSO 7. Touch the Grid Area Only checkbox if you do not need to print the dialog area and you only want to show the waveforms and grids. 8. Touch the Print Now button. E-Mail The instrument also gives you the option to e-mail your screen images, using either the MAPI or SMTP protocols. -
Page 125: To Set Time And Date From Windows
Operator's Manual 1. Ensure that the scope is connected to the Internet through the LAN connector at the rear of the scope. 2. In the menu bar touch Utilities, then Utilities Setup... in the drop-down menu. 3. Touch the Date/Time tab. 4. -
Page 126: Options
Options Use this dialog to add or remove software options. For information about software options, contact your local LeCroy Sales and Service office, or visit our Web site at http://www.lecroy.com/options. Options that you purchase, such as JTA2, add performance to you instrument. This added performance is seen in the new math functions or parameters that you can choose from when doing Measure or Math setups. -
Page 127: Delay Control
Operator's Manual Delay Control As you change the timebase, this control allows you to either keep the horizontal offset indicator stationary (when Div is selected) or to have it move with the trigger point (when Time is selected). The advantage of selecting Div is that the trigger point will remain on the grid as you increase the timebase;... -
Page 128: Acquisition Status
In addition to these dialogs, summaries are also provided for XY setups, memory (M1-M4) setups, and time stamps for sequence mode sampling. Service This button provides access to service dialogs, which are for the sole use of LeCroy service personnel. A security code is required to gain access. Show Windows Desktop Touching the Show Windows Desktop button in the main "Utilities"...
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