Pasco Xplorer-GLX Users’ Guide Manuel d'utilisateur Page 26
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
20 Graph
When the Linear Fit is turned on, the special option Create Calculation from Lin-
ear Fit appears in the Tools menu (see page 22).
Linear Fit can be useful even when the graphed data are not linear (qua-
dratic or exponential, for instance). See “Graph Linearization” on page 47.
Area Tool Select the Area Tool from the Tools menu to measure the area
between the data plot and the X-axis in the ROI. (See “Statistics” above for
instructions on setting the ROI.)
For data plotted below the X-axis, the area is measured as negative. The value of
area displayed at the bottom of the screen is the total area above the X-axis minus
the total area below the X-axis.
Area Tool
Derivative This tool overlays a graphical representation of the derivative (or
rate of change) of the data. In some cases, the Graph may need to be rescaled in
order to see the overlaid derivative. The Derivative Tool is designed for titration
experiments in which it is necessary to identify a point in a data set at which the
maximum rate of change occurs.
Trigger The Trigger is a tool that allows you to control how the GLX collects
data. With the Trigger, you make the GLX delay data recording (after you press
) until a certain condition is met by the incoming data. The Trigger has two
parameters: Trigger Edge, which can be rising or falling, and Trigger Level,
which specifies the data value that must be crossed. For example, on a voltage
versus time graph, if you set the Trigger Edge to rising and the Trigger Level to 5
volts, data recording will not start until the measured voltage rises above 5 volts.
The Trigger can be used in normal graph mode to start continuous recording, or it
can be used in Scope Mode (see page 22) to repeatedly trigger bursts of data col-
lection. In both modes, the Graph must have time on the horizontal axis.
To turn on the Trigger, select it from the Tools menu.
5
A horizontal dashed line
appears on the Graph indicating the Trigger Level. Press the up and down arrow
keys to change the Trigger Level. Press the right arrow key to cycle through ris-
ing edge, falling edge, and disabled. (The Trigger is initially disabled, so you
must press the right arrow key at least once to enable it.)
Positive
Area
Negative
Area
Total Area is area above the axis minus
area below the axis.
Trigger Level
Arrow Indicating
Trigger Edge
Trigger
5
The Trigger turns on automatically
when you turn on Scope mode. See
page 22.
Increase
Trigger Level
Decrease
Trigger Level
Enable, Disable, and
Change Trigger Edge
Open Trigger
Settings
- Users’ Guide 1
- About this Guide 2
- Technical Support 2
- How to Store the 3
- Contents 5
- Introduction 9
- Included Equipment 10
- Quick Start 11
- Overview of the GLX 12
- Shutting Down 13
- The Record Button 14
- Home Screen 15
- Bottom Row 16
- 12 Overview of the GLX 18
- Chapter 1: Displays 19
- Active Fields 20
- Choosing Data to Display 21
- Data Cursor and Coordinates 22
- Graph Function Keys 22
- Scale and Move with a Mouse 23
- F3 Tools Menu 23
- F4 Graphs Menu 28
- Data Annotation 31
- Annotation Menu 32
- Note Editor Dialog Box 33
- To Open the Table 34
- Table Scrolling 35
- Table Function Keys 35
- F2 Edit Cell 36
- F4 Tables 37
- Manually Entered Data 38
- Editing an Existing Data Set 40
- Xplorer GLX Users’ Guide 35 41
- 36 Table 42
- Digits Display 43
- To Open the Meter Display 44
- Auto Scale and Reset 44
- Chapter 2: Utility Screens 45
- Output Settings 46
- Calculator 47
- Algebraic Calculations 48
- Graphing Equations 50
- Sensor-based Calculations 51
- Calculation 52
- Calculator Function Keys 54
- F2 [Data] 55
- F3 Graph 55
- Output-control Calculations 56
- Special Functions 57
- Output-control Functions 57
- Logic Operators and Functions 58
- Audio Temperature Indicator 58
- Notes Screen 59
- Stopwatch 60
- Chapter 3: Settings and Files 61
- Sensor Settings 62
- Sensors Function Keys 63
- F3 Microphone 64
- ScienceWorkshop 65
- Manual Sampling Mode 66
- Timing Screen 68
- Constants 69
- Measurements 69
- Working with Multiple Timers 70
- Timing Screen Function Keys 70
- Digital Adapter Options 73
- 68 Timing Screen 74
- Data Properties 75
- Calibration 77
- For step-by-step 78
- After offset calibration 79
- 74 Calibration 80
- Calibration Procedures 81
- 76 Calibration 82
- Data Files Screen 84
- Navigating in the File List 85
- Data Files Function Keys 86
- Move or Copy File 87
- RAM and Flash 88
- File Size Limits 88
- File Transfer 89
- Backup and Restore GLX Files 89
- GLX-to-GLX File Transfer 90
- Settings Screen 91
- Language Options: 92
- Settings Screen Function Keys 93
- 88 Settings Screen 94
- Data Source Menus 95
- Multipress Text Input Mode 96
- Using a USB Keyboard 96
- Scientific Notation 97
- Printing 97
- 92 Printing 98
- Operation 99
- GLX Storage 100
- Battery Disconnection 100
- Battery Capacity 101
- Resetting 102
- Operating Temperature 103
- 98 Operating Temperature 104
- GLX with DataStudio 105
- Transferring Files 106
- File will be uploaded to 107
- 102 GLX with DataStudio 108
- GLX Simulator 109
- Screen Capture 110
- Screen Mirroring 110
- Sample Activities 111
- Activity 1: Calorimetry 113
- Analysis 114
- Xplorer GLX Users’ Guide 109 115
- 110 Calorimetry 116
- Background 117
- Before You Begin 117
- Procedure 118
- Data Collection 123
- 120 Newton’s Law of Cooling 126
- Variation 127
- GLX Set-Up 130
- Place the dashed box 135
- 134 Capacitor Discharge 140
- Interference 141
- Activity 10:Beat Frequency 143
- 140 Beat Frequency 146
- Shortcut Summary 149
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