Choose Accessibility:Settings from the File menu to access built-in assistive technology features for users who are visually impaired. Then, choose Audio Trace Graph or Toggle Audio Meter to turn on audio feedback for meters or graphs. Note: These features are only available on Windows computers.
We have worked closely with Cary Supalo from Independence Science, LLC to ensure that Logger Pro works well using JAWS scripts. JAWS is software for use on Windows computers that makes menus and windows operable by visually impaired users. More information about using JAWS with Logger Pro is available on our web site.
This will play a tone for each point on the graph. The frequency is related in a linear way with the trace that is selected. For example, you can hear a frequency increase when the temperature of a probe increases.
Playback length sets the time period for the audio playback of the graph.
"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.
The Traces/Fits to Play choices select what data are played back on the Audio Graph playback.
The Start Playback starts the Audio Graph playback playing. You can also start the playback by select File Menu:Accessibility:Start Audio Graph Trace.
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.
This will start to play a tone. The frequency is related in a linear way with the measurement that is selected in the box just below the Continuous Tone Meters box. Note that this can be useful for sighted people. It is a great way to find shorts, loose wires, intermitant connnections,etc. It is also useful to alert you for an event that you have to wait for, like a peak on the GC-Mini.
File Menu:Accessibility:Timer 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.