Biopac Student Lab                   BASIC TUTORIAL
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7. Open the Sa...
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Part A — Import...
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Scales
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Biopac Student Lab

  1. 1. Biopac Student Lab BASIC TUTORIAL Version 3.0.3 Running the Biopac Student Lab — page 3 Locating files in Review Saved Data mode — page 4 Important Concepts — pages 6, 7, 10 Display functions — page 11 Measurements — page 21 PC running Windows® Markers — page 26 or Macintosh® Journal functions — page 28 Printing — page 31 Saving — page 33 Jocelyn Kremer Documentation BIOPAC Systems, Inc. William McMullen Vice President BIOPAC Systems, Inc. BIOPAC Systems, Inc. 42 Aero Camino, Santa Barbara, CA 93117 Phone (805) 685-0066 Fax (805) 685-0067 Email: info@biopac.com Web Site: http://www.biopac.com [05141999]
  2. 2. 2 Biopac Student Lab Copyright Information in this document is subject to change without notice and does not represent a commitment on the part of BIOPAC Systems, Inc. This tutorial and the software it describes are copyrighted with all rights reserved. Under copyright laws, this tutorial or the software may not be copied, in whole or part, without the written consent of BIOPAC Systems, Inc., except in the normal use of the software or to make a backup copy. The same proprietary and copyright notices must be affixed to any permitted copies as were affixed to the original. This exception does not allow copies to be made for others, whether or not sold, but all of the material purchased (with all backup copies) may be sold, given, or loaned to another person. Under the law, copying includes translating into another language or format. Biopac Student Lab Tutorial, including all text and graphics, are ©1998 BIOPAC Systems, Inc., with all rights reserved. Warranty BIOPAC Systems, Inc. warrants its hardware products against defects in materials and workmanship for a period of 12 months from the date of purchase. If BIOPAC Systems, Inc. receives notice of such defects during the warranty period, it will, at its option, repair or replace the hardware products that prove to be defective. This warranty applies only if your BIOPAC Systems, Inc. product fails to function properly under normal use and within the manufacturer’s specifications. This warranty does not apply if, in the sole opinion of BIOPAC Systems, Inc., your BIOPAC Systems, Inc. product has been damaged by accident, misuse, neglect, improper packing, shipping, modification, or servicing by other than BIOPAC Systems, Inc. Any returns should be supported by a Return Mail Authorization (RMA) number issued by BIOPAC Systems, Inc. BIOPAC Systems, Inc. reserves the right to refuse delivery of any shipment containing any shipping carton without the RMA number(s) displayed on the outside. The Buyer shall prepay transportation charges to the site designated by BIOPAC Systems, Inc. BIOPAC Systems, Inc. makes no warranty or representation, either expressed or implied, with respect to this software, its quality, performance, merchantability, or fitness for a particular purpose. As a result, this software is sold “as is” and you, the Buyer, are assuming the entire risk as to its quality and performance. In no event will BIOPAC Systems, Inc. be liable for direct, indirect, special, incidental, or consequential damages resulting from any defect in the software or its documentation, even if advised of the possibility of such damages, or for damage of any equipment connected to a BIOPAC Systems, Inc. product. Trademarks Biopac Student Lab is a trademark of BIOPAC Systems, Inc. Apple and Macintosh are trademarks of Apple Computer, Inc. Windows is a trademark of Microsoft Corporation. This document was created with Microsoft Word for Windows, Adobe Photoshop, Corel Draw 7.0. Mainstay Capture, and JASC, Inc. JasCapture.
  3. 3. Basic Tutorial 3 Welcome to the Biopac Student Lab! To learn how the Biopac Student Lab works and how it can make your work easier, you can either complete this interactive Tutorial or read Recording Mode Basics and Analysis Mode Basics in the Orientation Chapter. Running the Biopac Student Lab To use this Tutorial, you need to open the SampleData file. To begin, follow the simple steps below. 1. Turn the computer ON. 2. Start the Biopac Student Lab To launch the program on a PC running Windows 95®, use the program as follows: Start menu as shown (or open BSL.EXE): PC users ¾ Use the Windows “Start” menu to open the “Biopac Student Lab” program. Mac users To launch the program on a Mac, locate and open the BIOPAC ¾ Open the BIOPAC Student Student Lab folder on the desktop. If it isn’t there, ask your Lab Instructor for assistance. Lab folder. ¾ Double-click on the application icon Next, double-click on the BIOPAC Student Lab icon. 3. A message regarding hardware If there is no hardware connected, the following message will may appear. appear: PC users ¾ For this tutorial (and all future analysis), click Cancel.
  4. 4. 4 Biopac Student Lab Mac users ¾ For this tutorial (and all future analysis), click No hardware. 4. Next you will be prompted to choose a lesson. ¾ For this tutorial (and for all future analysis), select Review saved data and click OK. You may have to scroll down to Review Saved Data. 5. Open the Data Files folder. Open the Data Files folder, which is in the Biopac Student Lab ¾ PC users — your program program folder. may open the Data Files for you. If so, skip to the next step. 6. Open the SampleData folder. Open the SampleData folder, which is in the Data Files folder.
  5. 5. Basic Tutorial 5 7. Open the SampleData-L07 file. Select and open the SampleData-L07 file, which is in the SampleData folder. Now you are ready to start the Tutorial! The Tutorial begins by introducing three basic concepts that make the Biopac Student Lab unique and powerful, and then provides detailed instructions on how to use important features of the program. You can have fun experimenting with the display and analysis functions of the Biopac Student Lab. Don’t worry — you can’t lose or damage the SampleData-L07 file.
  6. 6. 6 Biopac Student Lab Part A — Important Concepts IMPORTANT CONCEPT #1 There is a Data window and a Journal and each is saved as a separate file. ¾ The Data window displays the waveforms and is where you will perform your measurements and analysis. ¾ The Journal is where you will make notes. You can extract information from the Data window and put it in the Journal and you can export the Journal to other programs for further analysis. 8. Review the display to identify The Sample-L07 file should open as shown: the Data Window and the Journal. ¾ The Data Window displays waveform(s) during and after recording, and is also called the "Graph Window." ¾ The Journal works like a standard word processor to store recording notes and measurements. Display windows of the Biopac Student Lab
  7. 7. Basic Tutorial 7 IMPORTANT CONCEPT #2 The BSL allows you complete flexibility in how the data is viewed. Chart recorders lock you into one view, but with the BSL you can expand or compress the visual scales to aid in data analysis. The Data window display is completely adjustable, which makes data viewing and analysis easier. ¾ Zoom in on specific segments to take measurements, examine anomalies, etc. ¾ View the entire record at one time to look for trends, locate anomalies, etc. ¾ Hide a channel from view or view multiple channels. ¾ Overlap channels for easier comparison. Zoom 9. Click on the zoom icon. The zoom icon is in the lower right of the data window. 10. Position the cursor in the CH 1 The following figure shows an example of a selection made in ECG band at about 5.00 the ECG data with the zoom tool. seconds, then click and hold the mouse button down and drag the cursor to about 10.00 seconds. ¾ This will draw a box around the area. 11. Release the mouse button and When the mouse button is released, the boundaries of the review your result. selected area become the new boundaries of the data window. The Zoom function is very useful for expanding a waveform in order to see more detail.
  8. 8. 8 Biopac Student Lab Scales 12. Move the vertical scroll bar to reposition the Channel 1 ECG waveform. ¾ Note that the CH 40 Pulse waveform did not move. This is because the vertical scale is independent for each channel. 13. Move the horizontal scroll bar. ¾ Note that both waveforms moved. This is because the horizontal scale controls all channels. 14. Pull down the Display menu and select Autoscale horizontal. ¾ Autoscale horizontal from is a quick way to fit the entire waveform within the data window. 15. Pull down the Display menu and select Autoscale waveforms. ¾ Autoscale waveforms will center waveforms in the display window. Selecting Autoscale horizontal and then Autoscale waveforms is the standard way to quickly and easily return to your original data display. Show/Hide a channel The channel 40 box is in the upper left of the data window. When you hide a channel, the data is not lost, but simply hidden, 16. Hide Channel 40 as follows: so that you can focus on specific channel(s). Hidden channels ¾ PC — hold the “Ctrl” can be brought back into view at any time. (Control) key down and The channel box displays a “slash” when that channel is turned click on the Channel 40 box off. ¾ Macintosh — hold the “option” key down and click on the Channel 40 box.
  9. 9. Basic Tutorial 9
  10. 10. 10 Biopac Student Lab IMPORTANT CONCEPT #3 Measurements are fast, accurate, and automatically updated. The measurement tools are used to extract specific information from the waveform(s). Measurements are used in the Data Analysis section of every lesson, so understanding their basic operation is important. Let’s say you wanted to know the heart rate for the sample ECG data. You could get a rough estimate of the average heart rate by counting the number of peaks (R-waves) within the first 10 seconds (14 in this example) and multiplying by 6 to get the number of beats per minute (84 in this example). Or, you could take a much easier and more accurate reading with the Student Lab measurement tools. 17. Pull down a measurement type The measurement type box is a pop-up menu next to each box and select BPM. channel number box that allows you to choose any of the 17 Biopac Student Lab measurement functions. 18. Select an area from the peak of one R-wave to the peak of the Click on the I-beam icon to activate the I-beam cursor. If the next R-wave using the I-beam. correct region is not established by the “I-Beam” cursor for the measurement type, the result will be meaningless. 19. Review the result. Results will be automatically updated when you change the channel selection or the selected area. Congratulations! You should now recognize the basic concepts and be able to begin using the Biopac Student Lab for data analysis. For more detailed instruction, complete the full tutorial.
  11. 11. Basic Tutorial 11 Part B — Display Functions 20. Show Channel 40 again. 21. Select Autoscale horizontal from the Display menu. 22. Select Autoscale waveforms from the Display menu. 23. Familiarize yourself with the data The Biopac Student Lab software has a variety of Display Tools viewing tools and display regions available that allow you to change the data display by adjusting of the Data Window. axis scales, hiding channels, zooming in, adding grids, etc. This can be very useful when you are interested in studying just a portion of a record, or to help you identify and isolate significant data in the record for reporting and/or analysis. ch an n e l b ox es (D a ta A na ly sis m o d e o n ly ) less o n d isp lay b u tto n s (ca n v a ry fro m le sso n to lesso n ) ac tiv e c h an n el c ha n ne l d isp lay re gion (C H 1) v e rtical sca le s lab el v e rtical scro ll b ox ch an n e l lab e ls v e rtical scro ll b ar c ha n ne l d isp lay re gion (C H 40 ) h o rizo ntal scroll ba r h o rizo ntal sca le h o rizo ntal scroll bo x se le c tion to o l zo o m to o l Editing and Selection Tools A good starting point is to understand the editing and selection tools. In the lower right of the data window there are three icons 24. Locate the editing and selection representing the selection tool, the “I-Beam” tool, and the zoom tool icons in the lower right of tool. the Data Window. To select any of these tools simply click the mouse on the desired icon, and it will darken to indicate it is active (the I-beam is darkened/active in the picture above). Each tool displays a different mouse cursor when it is active. The sample data file opens with the selection tool active. 25. Click on the I-beam tool and move the cursor into the channel The I-Beam icon changes the cursor to and is used to display region to see how the select an area for measurement, as will be demonstrated later. cursor changes. 26. Click on the zoom tool and move the cursor into the channel The zoom icon changes the cursor to and is used to display region to see how the expand a section of the waveform to see more detail, as will be cursor changes. demonstrated later. 27. Click on the selection tool and move the cursor into the channel The selection icon changes the cursor to and is a general- display region to see how the purpose cursor tool, used for selecting waveforms and scrolling cursor changes. through data.
  12. 12. 12 Biopac Student Lab Activate a Channel In the upper left portion of the data window are the channel boxes. They enable you to identify the active channel and hide 28. Locate the Channel boxes in the channels from view, so as to concentrate on or print out only upper left portion of the data specific waveforms at a time. The “active” channel appears window. depressed, and on Macs, there is a label next to the channel box that indicates the active channel. In the sample below, CH 1 ECG is the active channel. (this label appears on Macs only). 29. Mac users only -- Using the To activate another channel simply click on the channel number selection tool, click on the box with the selection tool, and its label will be displayed. Channel 40 box to activate it and notice how the channel label to the right of the channel boxes The channel box that is active is the channel that contains the changed to “Pulse” to indicate the displayed label. The label to the right of the channel boxes should active channel. correspond to the label to the left of each channel’s display region. You should notice that the active channel appears to be depressed. Show/Hide channel Another data viewing feature of the Biopac Student Lab system, is the ability to hide any of the channels from view. The data for a 30. Use the selection tool to hide disabled channel is not lost, but simply hidden, so that the user Channel 40 as follows: can focus on specific channel(s). These hidden channels can be ¾ PC — hold down the “Ctrl” brought back into view at any time. (Control) key and click on The channel box displays a “slash” when that channel is turned the Channel 40 box off. ¾ Macintosh — hold the “option” key down and click on the Channel 40 box. 31. Click on Channel 1 to activate it. Hiding an active channel does not prevent it from being the active channel; you must still select another channel to activate it. Notice that the label changes from “Pulse” to “ECG.”
  13. 13. Basic Tutorial 13 Show / Hide Grid Display Another powerful feature is the ability to Show or Hide the grid display. A grid is a series of horizontal and vertical lines that 32. Pull down the File menu and assist the eye with finding data positions with respect to the scroll down to select Display horizontal and vertical scales. Preferences. To turn grids on and off in the Review Saved Data mode, simply choose Display Preferences from the File menu as shown below. 33. Select “Grids” and click on A window will appear as shown: “Ok.” 34. Select Show Grids to turn the Another window will appear as shown: grid display ON, and click Ok. (To turn the grid display OFF, select Hide Grids.)
  14. 14. 14 Biopac Student Lab 35. Review the display with grids. Note that the Grids display affects all channels. If you show a channel that was hidden when Grids were activated, the grid display will show on the channel. 36. Repeat steps 20-22 to Hide Grids again. Scroll - horizontal 37. Locate the horizontal scroll bar at the lower edge of the display and the horizontal scroll box arrows at the left and right ends of the bar. You can move to different locations in the record by using the horizontal scroll bar. In our example, the horizontal scale represents time in seconds. If the entire waveform is being displayed, the scroll bar will dim, and it will not allow changes. If however, you have zoomed or changed the horizontal scale, such that only a portion of the waveform is in view, then the scroll bar will be active. This is a standard Windows style scroll bar (for both Mac and PC). Note that since the horizontal scale applies to all channels in view, it will move every waveform simultaneously.
  15. 15. Basic Tutorial 15 38. Move to different locations in the record by clicking on the bar, or clicking and holding down the mouse button on the horizontal scroll box to “drag” it left or right. Notice the horizontal scale range on the bottom changes to indicate your position in the record. 39. Move to locations later in the record by clicking on the arrow on the right end of the scroll bar. You can click on the arrow and hold down the mouse button to create a continuous scroll. Scroll – vertical 40. Locate the vertical scroll bar along the right edge of the display and the vertical scroll box arrows at the top and bottom of the bar. A similar scroll bar can be found next to the vertical scale. This is the vertical scroll bar, and it allows you to move a specific waveform either up or down. The channel that it moves is the one shown by the active channel box. To move a different channel click on corresponding channel box using the selection tool.
  16. 16. 16 Biopac Student Lab 41. Move the waveform up by clicking on the arrow on the bottom of the scroll bar. Notice the vertical scale range on the right side changed. 42. Move the waveform back to center by dragging the box to the center (zero) position. 43. Choose Autoscale waveform to center the waveform in the display window.
  17. 17. Basic Tutorial 17 44. Use the selection tool to show channel 40 again. ¾ PC — hold down the “Ctrl” (Control) key and click on the Channel 40 box ¾ Macintosh — hold down the “option” key and click on the Channel 40 box Scales Note that any change you make to the horizontal or vertical scale only effects how the waveforms are displayed, and never alters 45. Identify the horizontal scale the saved data file. That is to say, you will never lose any data along the bottom of the screen when you change these settings. and the vertical scale along the right edge of the screen. Adjust horizontal scale If you click anywhere within the horizontal scale region, a window will pop up as shown below. This window allows you to 46. Click anywhere in the horizontal precisely specify the horizontal scale. scale region to bring up the adjustment box. 47. Read about the Time, Start, and The Time setting defines the number of seconds per division Precision options to the right displayed in the data window. Edit the number like you would in a word processor or double click in the appropriate box and type in a new number The Start setting defines the placement of the waveforms by setting the time displayed at the left most portion of the data window. Edit the number like you would in a word processor or double click in the appropriate box and type in a new number. The Precision setting controls the number of significant digits displayed in the horizontal scale region. Click and hold down the mouse on the precision number. A pop-up menu will appear, allowing you to make another selection.
  18. 18. 18 Biopac Student Lab Changes made in this window will be performed after clicking on the “OK” button. If no changes are desired, click on “Cancel.” Adjust vertical scale If you click anywhere within the vertical scale region, a window will pop as shown below. 48. Click anywhere in the vertical scale region for Channel 1 to bring up the adjustment box. Note that the vertical scale is independent for each channel. Note that the vertical scale is independent for each channel, so you need to select the appropriate channel prior to clicking on the vertical scale. If the vertical scale you want to change is not the one displayed (in our case CH 1), click on “Cancel” and then click on the appropriate channel box using the selection tool. 49. Read about the Scale, Midpoint, Scale defines the amplitude per division displayed in vertical Precision, and All channels scale. Edit the number like you would in a word processor or options to the right. double click in the appropriate box and type in a new number. Midpoint defines the amplitude value corresponding to the center of that channel’s vertical scale. Edit the number like you would in a word processor or double click in the appropriate box and type in a new number. Precision establishes the number of significant digits displayed in the vertical scale region. Click and hold down the mouse on the precision number. A pop-up menu will appear, allowing you to make another selection. All Channels is a quick way to have the scale setting apply to all of the vertical scales in the data window. This is particularly useful when all of the channels are the same type of data (i.e. 2 or 3 channels of ECG data). Click in the box. An “X” will appear when the option is activated. Repeated clicking in the box will toggle the option on or off. 50. Changes made in this window will be performed after clicking on the “Ok” button. If no changes are desired, click on “Cancel.”
  19. 19. Basic Tutorial 19 Zoom The zoom tool is very useful for expanding a waveform in 51. Click on the zoom tool icon to order to see more detail. The zoom function can only be used on a select it. single channel at a time but effects all channels. 52. Position the cursor at the start of If you know the precise section of the waveform that you’d like to the section you’d like to zoom in enlarge, you can use the Zoom tool to draw a box around the area on, then click and hold the mouse you wish to zoom in on. The following figure shows an example button down and drag the cursor of a selection made in the ECG data with the zoom tool. to draw a box around the area. 53. Release the mouse button and When the mouse button is released, the boundaries of the selected review your result. area become the new boundaries of the data window, as shown: ¾ Note that the vertical scale changed for the selected channel, but the horizontal scale changed for all channels. The vertical scale will change for the selected channel only, but the horizontal scale will change for all channels; this is because the horizontal (time) scale is the same for all channels. Display Menu The Display menu contains even more tools for manipulating the data display. When you click on Display and hold down the 54. Pull down the Display menu to mouse, the following options will pop-up: review the options. Display Menu options To use any of these options, click and hold down the mouse button on the “Display” menu and drag down to the desired selection, then release the mouse button.
  20. 20. 20 Biopac Student Lab 55. Select Zoom previous to “undo” After you have zoomed in on a section of the waveform, you may the Zoom. “undo” the zoom and revert to the scale settings (both horizontal and vertical) established prior to the last zoom by selecting Zoom previous from the Display menu. The Zoom previous function will only go back one Zoom function. You can not select it 6 times, for instance, to go back 6 zooms. 56. Activate Channel 1. Click in the Channel 1 channel box to activate it. 57. Move the vertical scroll bar to These next two steps are so you will be able to see the effect of reposition the Channel 1 ECG the Autoscale waveform function. waveform. 58. Select Channel 40 and move the vertical scroll bar to reposition the Channel 40 Pulse waveform. 59. Pull down the Display menu and The Autoscale waveforms option of the Display menu is a very select Autoscale waveforms. handy tool that performs a “best fit” to each channel’s vertical scale. That is, it will adjust the “Scale” and “Midpoint” of each channel’s vertical scale, such that the waveform fills approximately two-thirds of the available area. After autoscaling, the “Scale” will probably not be set to nice even numbers, so you may wish to manually adjust the scale slightly if even numbers are desired.
  21. 21. Basic Tutorial 21 60. Pull down the Display menu and Autoscale horizontal from the Display menu is a quick way to fit select Autoscale horizontal. the entire waveform within the data window. That is, it will adjust the horizontal scale such that the left most portion of the screen is the start of the recording, and the right most portion is the end of the recording. The time per division setting, will not necessarily be nice even numbers. Part C — Extracting Measurements The Selected Area The “selected area” for all measurements is the area selected by the I-Beam tool (including the endpoints). Note that the “I-beam” 61. Read about the Selected Area to cursor position when the mouse button was first pressed defines the right. the starting point and the position at release defines the end position of the selected area. A critical concept for the measurement tools is that the measurement results only apply to the area established by the “I- Beam” cursor. ¾ The selected area can be a single point, an area, or the end points of a selected area. ¾ If there is no point or area highlighted on the screen, then the measurement results are meaningless.
  22. 22. 22 Biopac Student Lab ¾ It is up to you to select a point or an area with the I-Beam cursor, as the software will never do it automatically. Select a single-point area 62. Click on the I-beam tool icon to activate it. 63. Move the cursor over a point on You will notice that whenever the cursor is over data it is the data. displayed as an “I.” 64. Click on the mouse button. When you have a flashing line, you have one point of data selected. If the line is not flashing, it means that you moved the A flashing line should appear at cursor while the mouse button was pressed, and you actually the cursor position. selected more than one point of data. If this occurred simply click on another portion of data. o n e d ata po in t se le c ted (flash in g lin e) 65. Click on the selection tool icon to When you are finished taking measurements, and wish to deactivate the point. deactivate a point, click on the selection tool icon. Selecting an area (several points) 66. Click on the I-Beam tool icon to activate it. 67. Move the cursor over a point on the data. 68. Drag the mouse while keeping the mouse button held down. 69. Release the mouse button. When the mouse button is released, an area should be highlighted ¾ An area should be (darkened) on the screen, as shown below. This is very similar to how you select words in a word processing program. highlighted. A rea (group o f data po in ts) selected
  23. 23. Basic Tutorial 23 70. Click the mouse on another point When you are finished taking measurements and wish to of data and then click on the deactivate a selected area, click the mouse on another portion of selection tool icon to deactivate data to select just one point (flashing line appears), then click on the point. the selection tool icon. Measurement tools The measurement tools are used to extract specific information from the waveform(s). Measurements are used in the Data 71. Read about Measurement Tools Analysis section of every lesson, so understanding their basic to the right. operation is important. To use the measurement tools, you must a) set the channel measurement box to the desired channel b) select a measurement tool from the pop-up menu c) select an area for measurement Note that you can perform these elements in any order, but all three must be completed to achieve a valid measurement. Two important points regarding measurements need to be mentioned here: 1. The first is that the measurement only applies to data in the selected area of the waveform that the user specifies. 2. The second is that every lesson contains the same measurement options, but some may not be applicable to that particular lesson. This is because the measurement options are a standard set of tools that are always available, much like a scientific calculator contains a standard set of buttons, many of which may not be necessary for any given problem. 72. Locate the channel Note that there are four channel measurement box regions measurement box regions. shown in the window. The SampleData file contains two channels of data. ch an n el b o x es (d ata an alysis m od e on ly) ch an n el m e asu rem ent bo x re g ion s S elec tio n cu rso r ic o n "I" B ea m cu rsor ico n The measurement box regions can be set to correspond to any of the channels shown on the screen. To change to another channel, simply click on its channel box, and read the new label.
  24. 24. 24 Biopac Student Lab 73. Review the Channel Box The following figure shows a breakdown of the pieces within the Region. Channel box region: m e asu rem e n t ty p e P o p -u p m e n u ch an n e l n u m b e r P o p -u p m e n u m e asu rem e n t resu lt Elements of the channel box region 74. Pull down the Channel number The channel number refers to the channel of data that is active [CH] pop-up menu and review for that measurement box region. To change a channel number, the options. click and hold down the mouse button over the channel number box. A pop-up menu will appear allowing you to make another selection. The selections in the pop-up menu will contain the channels that were recorded plus the “SC” option. 75. Position the cursor over a channel “SC” stands for Selected Channel, and is an optional way to take box and pull down the menu to measurements. When SC is selected, the channel the measurement select the “SC” channel option. region refers to is the one indicated by the depressed channel box. To take a measurement from another channel, you may simply click on the desired channel box, or click anywhere within the data region for the desired channel using the selection tool icon. This allows you to make quick measurement comparisons between channels using one region. To determine which channel number refers to which waveform, look to the right of the box(es) for the active channel box label. To “fix” the channel number for the region, simply choose the desired channel number. 76. Position the cursor over a channel box and click and hold down the If you have a color monitor, the boxes will be mouse button to generate the outlined in the corresponding wave color. pop-up menu. Select Channel 1.
  25. 25. Basic Tutorial 25 77. Position the cursor over a The measurement type box is a pop-up menu next to each measurement type box and pull channel box that allows you to choose any of the 17 Biopac down the measurement tool pop- Student Lab measurement functions. (See the“Elements of the up menu. channel box region” figure on page 24 for a complete list of measurements). The pop-up measurements always operate on the area you have selected with the I-beam tool and will update instantly if the area or measurement changes. For instance, if you choose p-p, you will find the peak to peak value of the wave in the selected area. If you choose max, you will get the maximum value of the selected area. Note that all measurements are available in every lesson, but some may not be used. Measurement Result The measurement result is the value that the measurement calculates. 78. Locate the measurement result region. Sample BPM reading From time to time, you will want to know specific things about the data on the screen. For example, let’s say you wanted to know the heart rate for the sample data. Since you can see the peaks (R-Wave) in the ECG waveform, you can get a rough estimate of the average heart rate by counting the number of peaks within the first 10 seconds (14 in this example) and multiplying by 6 to get the number of beats per minute (84 in this example). 79. Activate Channel 1. 80. Adjust the horizontal scale so that you can easily identify the R- wave peaks (try .30 seconds/div). 81. Use the I-beam tool to select an If the correct region is not established by the “I-Beam” cursor for area from the peak of one R- the measurement type, the result will be meaningless. wave to the peak of the next R- wave. 82. Set a channel measurement box to Channel 1, BPM. 83. Review the result. Your result will vary; this is just an example.
  26. 26. 26 Biopac Student Lab Part D — Markers Markers Markers are used to reference important locations in the data and appear as inverted triangles within the marker region. Markers 84. Read about Markers to the right. may be automatically inserted in a lesson and/or you may be instructed when to insert a marker. Additionally, you may wish to add markers or edit marker text after the recording. The specific elements of markers are shown below: M ark er Te xt M ark er R egio n M ark ers M ark er To ols To insert a marker while the data is being recorded, you must depress the Esc key on a Macintosh, or the F9 key on the PC. You may then type in text, which will be linked to that marker. The text is shown in the left portion of the marker region. The marker that is darkened/colored is the active marker for which the marker text shown applies. You may change the active marker by using the “marker tools” in the right portion of the marker region (see figure above). 85. Click on the right pointing Clicking on the right pointing marker tool will move to the marker tool. marker that was placed after the current active marker (if one exists). Notice the marker label and the data position. 86. Click on the left pointing Clicking on the left pointing marker tool will move to the marker tool. marker that was placed prior to the current active marker (if one exists). Notice the marker label and the data position. 87. Click on the downward pointing Clicking on the downward pointing marker tool generates a marker tool. pop-up menu as shown: To choose any of the menu items, simply scroll to the desired option and release the mouse button when it is highlighted.
  27. 27. Basic Tutorial 27 88. Review the list of marker labels All the marker labels in the record will be listed at the bottom of at the bottom of the menu and the menu. The SampleData file has two markers. You may go to a scroll down to select exhale. particular marker by scrolling down to select its label. Moving to different markers using this menu may not seem very relevant for the SampleData file, but when a lot of data has been recorded, it can be a very useful tool. Add a marker You may add markers to your data after it has been recorded simply by clicking within the marker region using the selection 89. Use the selection tool to click in tool. This new marker will then become the current active marker, the marker region to the right of and you may type in the marker text. the “exhale” marker to add a new marker. 90. Label the new marker “test marker” by entering text at the flashing cursor in the marker text region. 91. Pull down the downward marker The marker menu allows you to Find certain markers by entering arrow and select the Find… the marker text you want to locate. option. 92. PC: Enter “awake” when prompted and click on Find. Mac: Enter “inhale” when prompted and click on Find. Selecting Find again will move to the next marker with the same label (if one exists). 93. If prompted, click Ok to restart marker search from the beginning of the record.
  28. 28. 28 Biopac Student Lab Edit marker text 94. Use the selection tool to click in the marker region and change the label. For instance, Mac users can change “inhale-hold breath” to “inhale/hold” using standard keyboard functions. You may edit marker text by using the selection tool to click within the marker region and using the keyboard functions to edit the marker text. 95. Pull down the downward marker The Clear marker option will delete the current active marker. arrow and select “Test marker” and to go to it. Selecting Clear all markers will delete all the markers in the file. 96. Pull down the downward marker It is important to note that you cannot undo a “Clear arrow and select the Clear marker” or “Clear all markers” function, so these marker option to delete the functions should be selected with caution. “Test marker.” Part E — The Journal 97. Read about the Journal to the The Review Saved Data mode incorporates a Journal feature so right. you can type notes or copy measurements from previously saved data. You can also copy the data directly to the Journal. The Journal needs to be the active window for its options to come up. 98. Click anywhere in the Journal window to activate it. Note that when the Journal is the active window, the title bar of the Journal includes sizing and close boxes.
  29. 29. Basic Tutorial 29 Format Journal Entries 99. Pull down the File menu, scroll down to Journal Preferences and drag right to select Journal/Clipboard 100. Review the options that can be You can set the font style and size and control formatting for text, set to change the way measurements and wave data. measurements are pasted into the Journal. 101. Click in the box next to each Select these options for the tutorial so that when you paste measurement paste option box measurements in a few steps you can easily identify them. When so that all are selected. you plan to export the measurements to a spreadsheet program (such as Excel), it is best not to select all of the options, as they will affect the formatting. 102. Click in the “Include time Again, make this selection for the tutorial, but you would not values” box of the waveform normally select this if you planned to export the wave data to a data paste options. spreadsheet program. 103. Click Ok to accept the option changes. Time and Date Stamps The Journal is also equipped with stamps for the time and date. It’s always a good idea to time and date stamp the Journal. 104. Position the cursor at the end of the journal entries and click on the clock icon to activate the time stamp. The time stamp is the “clock” button at the top left of the Journal Review the Journal. window. When you click on the clock icon, the current time (according to your computer’s System clock) will be entered in the Journal at the cursor point. 105. Click on the calendar icon to The date stamp is the “calendar” button to the right of the time activate the date stamp. stamp. When you click on the calendar icon, the current date (according to your computer’s System calendar) will be entered in Review the Journal. the Journal at the cursor point.
  30. 30. 30 Biopac Student Lab Text entry It’s possible to write anything you want directly in the Journal. Just click on the Journal window and place the cursor at the point 106. Place the cursor at the point you wish to begin typing and you wish to begin typing. enter text using the standard keyboard functions. To go back to the graph, just click on the graph window. Paste a pop-up measurement 107. Select Channel 1 in the Data Select the channel you want to measure by clicking on it with the Window. arrow tool or use the cursor to pick the correct channel number in the boxes just left of each of the pop-up measurements. 108. Set a pop-up measurement box for CH 1 BPM. 109. Set a second pop-up measurement box for CH 1 Time. 110. Use the I-beam tool to select a region from the peak of one R-wave to the peak of the next R-wave. 111. Pull down the Edit menu, scroll to Journal and slide right to select Paste Measurement. 112. Review the Journal entry. When you use the Paste Measurement function, all the pop-up measurements showing a value will be written to the Journal. If you don’t want these measurements in the Journal, be sure to select the measurement option “none.” Paste Wave Data The Paste Wave Data function will write all the points that make up the data in the selected wave area to the Journal. 113. Select the channel you wish to measure. Select the channel you wish to measure by clicking on it using the arrow tool or use the cursor to pick the correct channel in the channel boxes just left of each of the pop-up measurements 114. Use the I-beam selection tool to Remember — it’s very easy to put a lot of data into the Journal select the portion of the wave using this command. If you select one second of a wave that was you are interested in. sampled at 200 Hz, 200 numbers will be pasted into the Journal. 115. Pull down the Edit menu, scroll down to Journal then scroll right to Paste Wave Data.
  31. 31. Basic Tutorial 31 116. Review the Journal entry. Saving the Journal When saving the Journal, the program creates a standard text file. The only file type option available is journal graph because the Journal and Graph files are linked. 117. Pull down the File menu and To save the Journal, click on the File menu and select Save select Save Changes. Changes. 118. Click on Save Changes to use the existing file name and location. 119. Click on the Journal window and move to the File menu, and select Save Changes. 120. Enter a new file name and/or location and click on Save. Part F— Printing 121. Read about the Print functions You control how the data is presented on the printed page by to the right. controlling how it is displayed on the screen prior to selecting Print. All of the options relating to printing the data files apply to the When you choose File > Print waveforms as they are displayed in the data window. you will be prompted to choose which items to print.
  32. 32. 32 Biopac Student Lab 122. Printing the Data Window The printer only works with the data shown in the data window, which often is not the complete data file. If you’ve zoomed, changed the scale, or hidden a channel, only the portion of data displayed in the data window will be printed. This is actually very useful, because oftentimes you may only want to display a portion of the data. ¾ To print the entire data file The next two steps will setup the display window to show the entire data file. 123. Click the mouse in any portion of the Data Window to make it the active window. 124. Pull down the Display menu and choose Autoscale horizontal. 125. Pull down the Display menu and choose Autoscale waveforms. 126. Pull down the File menu and The following window is just one example of the window you may choose Print > Print graph. see: Your actual print window will depend on the printer (and Operating System) you are using. Refer to the Users Manual for your computer and/or printer if you need more details. 127. Click on Print. 128. Review the printed result.
  33. 33. Basic Tutorial 33 Part G — Saving Data 129. Read about the Save functions The Biopac Student Lab software lets you save the data to the right. waveform(s) file for later review. The program will save the data file automatically, with a file name based on the user name or I.D. given at the start of each lesson. The first step in every lesson is for you to enter in your name. The Biopac Student Lab software then creates a folder with the exact name you enter and places it in the Data Files folder of the Biopac Student Lab Program folder. When the Done button is pressed, the lesson will automatically save your data file to the Data Files folder. The software will save the data file with the name you entered plus an extension that identifies the lesson number and the file type (lesson data or journal). This extension is very important because the software will key off this extension and open up different tools for the Review Saved Data Mode, depending on the lesson. NEVER CHANGE THESE FILE NAMES. In addition to saving the data file, the software will automatically create a journal file and place lesson information in it. It will save this journal with the same name as the data file, but with a “J” in the extension instead of an “L” as was used for the data file. Since the Review Saved Data mode needs to access both data and journal files, ALWAYS KEEP THESE TWO FILES TOGETHER. Other lesson data files that use the same name will be placed in this same folder, but the software will never allow you to save a data file with the same name and lesson number. This information is summarized in the following figure: Jo u rn a l F iles D ata F iles F ile e x ten sio n s are ad d ed a u to m atic ally Inside the “Data Files” folder As a general note, because the Biopac Student Lab software is saving the data and journal files automatically, you must exercise caution when moving things around into different folders.
  34. 34. 34 Biopac Student Lab It is recommended that you never place other files or folders in the BIOPAC Student Lab folder, and never take files or folders out of the BSL folder with the exception of removing data and journal files from the Data Files folder. SAVE OPTIONS Once in the Review Saved Data mode, you may alter the data display window, or enter more information into the journal. When you make changes to the data window, you are only changing how the data appears on the screen — you are not altering the data that has been originally recorded. Saving the changes will never delete any data.. 130. Review the save options under the File menu. File menu for “Save” options The Save changes option saves the file in the original location. The Copy to Floppy or Network option creates a copy of the original file in a new location. 131. Pull down the File menu and To save without quitting the software, use the save options in the select the Save changes option. “File” menu. These options are shown in the following figure. 132. Review the options and select After a Save selection has been made, the following window Cancel when done. should appear. PC Macintosh dialog on next page Æ
  35. 35. Basic Tutorial 35 Macintosh There are several options to review here: ¾ File location allows you to choose where the altered file will be saved. Note that if you want to save to anywhere different from where the original files were located—for example, saving the data to floppy disks for later review— you should use the Copy to Floppy or Network option. This is in order to allow the Review Saved Data Mode to work correctly. ¾ File name can not be altered from the original name. Again, this is to allow the Review Saved Data mode to work correctly. ¾ File type is locked on Graph, which is the original way it was saved and is the waveform display you normally see on screen. This mode copies the journal text as well. ¾ The “Eject” button will eject the active disk and allow you to insert a disk to copy to. ¾ The “Desktop” button will allow you to find files on the desktop. ¾ The “New” button will create a new folder. ¾ The “Cancel” button terminates the Save function. ¾ The “Save” button instigates the Save function. 133. Pull down the file menu and Alternatively, you can use the fast key shown. When you try to select Quit. quit the software after altering the data file and/or journal file in any way, the following message will appear. Quit prompt to save changes
  36. 36. 36 Biopac Student Lab 134. If prompted, click Yes to save Alternatively, you can select the self-explanatory No or Cancel all changes. options. 135. Eject the disk. Alternatively, Mac users can drag the diskette icon to the Trash ¾ Mac: use Special menu icon and it will eject. ¾ PC: manually eject disk 136. Close the file you opened and close the hard drive window. 137. Remove the diskette from your hard drive. 138. Drag the diskette icon to the trash and release the mouse button. 139. Pull down the Start or Special menu and choose Shut down.

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