The Accessibility menu item was added to Logger Pro<\/i> in 3.8, but the features were not well-implemented. For example, there was a way to that an audio tone corresponding to a sensor reading, but there was no way to control the volume. These options were greatly improved in version 3.8.4 and new features have been added since. <\/p>\n
Note that these features are only available on the Windows version of Logger Pro<\/i>.<\/p>\n
The menu item File\/Accessibility in Logger Pro<\/i> 3.87 and newer has five choices:<\/p>\n
Choose Settings<\/b> to get to the Settings dialog. This offers several options:
\n– Continuous Tone Meters
\nChecking the Meter checkbox and then closing this dialog will start to play a tone with a frequency derived from the value of the checked meter. The frequency is related in a linear way with the latest measurement for that meter. For example, you can hear a frequency increase when the temperature of a probe increases. Note that this can also be useful for sighted people. It is a way to find shorts, loose wires, intermittent connections, etc. It is also useful to alert you for an event that you have to wait for, like a peak on a gas chromatograph experiment.<\/p>\n
Most of the things at the left of the Accessibility Settings dialog are to control the Audio Trace Graph. This is a sound “playback” of a graph included in the experiment.<\/p>\n
Playback length sets the time period for the audio playback of the graph.<\/p>\n
“Pop” on Graph Grid Lines, will cause a sound to occur as the graph is playing back, each time the trace reaches a grid line. Note that these “pops” are very subtle.<\/p>\n
The Traces\/Fits to Play choices select what data are played back on the Audio Graph playback.<\/p>\n
The Start Playback starts the Audio Graph playback playing.<\/p>\n
The Audio Feedback checkbox is used to give audio feedback during calibration of sensors and during the warm up periods of calibration of Mini-GCs and spectrophotometers. It is off by default, unless a screen reader (like JAWS) is installed, but it can be turned on any time. Basically, if this box is checked it makes it easier for a blind student to do calibrations.<\/p>\n
Start Audio Graph Trace<\/b> starts the Audio Graph playback playing, using the settings specified as the default or in the File\/Accessibility\/Settings dialog.<\/p>\n
Timer<\/b> is a simple count-down audio timer. You can set a time period in hours, minutes, and seconds. A sound will occur when that time has elapsed. You can specify the sound to be produced from seven choices, from a simple click to a baby crying. If you do not hear these sounds, check your volume level.<\/p>\n
Emboss Graph<\/b> will print a graph on Braile printers. It also allow you to set the font and scale factor for embossed graph.<\/p>\n
Embossing Options<\/b> allow you to set the font and scale factor for graphs printed on Braile printers.<\/p>","protected":false},"excerpt":{"rendered":"
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