Black Box IEEE 1284 Podręcznik Użytkownika Pobierz pdf (Strona 32)

Page 32 of 98 The Black Box Toolkit

7.3.4. Tutorial 4: Setting-up for active switch closure/stimulus-response

active switch closure is where the toolkit controls one or more keys or buttons on your own

standard response devices. Typically this may be a mouse button or key on a keyboard.

Again the sensor check utility can help you check that any wiring is functioning correctly

and that stimulus materials trigger a response from the toolkit. This is most easily

accomplished using the “Input & Output Line Test” module running on the BBTK host.

Once started this gives you the option to check that input lines/sensors are triggering the

toolkit and that output lines are outputting and correctly interacting with your own devices.

Once the line check module is running you should click on the “Output lines” – “Check”

button. You can then click on an LED to latch the particular line on or off.

For example line 8, one of the active switch closure lines, could be attached to the space

bar of your own keyboard. When the LED is clicked the space bar of the remote PC should

be held down for as long as the LED is latched. To test this you need to click on the large

button to the left of the sensor check screen and hover the mouse in a stationary position.

Each time line 8 is activated the key will light green, a white opto-detector block will be

displayed and the keyboard event count will be increased.

If you have attached an active switch closure lead to a mouse button make sure the

mouse is kept stationary over the large button. Depending on which mouse button is

activated a white opto-detector block will be displayed and the mouse event counter will be

increased.

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Black Box IEEE 1284 Podręcznik Użytkownika Strona 32