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--- biac:experimentalcontrol:biac6hardware [2024/02/12 16:28]
cmp12
+++ biac:experimentalcontrol:biac6hardware [2024/04/15 19:23]
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@@ Line 92: / Line 92: @@
-==== BIAC6 Screen Configuration ====
+===== BIAC6 Screen Configuration =====
-  * BIAC6 is equipped with NordicNeuroLab ( NNL ) [[https://www.nordicneurolab.com/product/visualsystem-hd|VisualSystemHD]] goggles
+  * BIAC6 is equipped with NordicNeuroLab ( NNL ) [[https://www.nordicneurolab.com/product/visualsystem-hd|VisualSystemHD]] goggles for stereoscopic display
+  * The individual eyes of the NNL headset are hard-wired to the graphics card on the display computer and not routed through the switcher
+  * because of this setup, the stimulus computer appears to have 4 monitors
+  * monitor 1,2 are connected to the switcher and can be switched around to all the different displays at the scanner suite
+  * 3,4 are directly connected to the googles and can only output there
+  * when configuring your tasks to display, please take account of which monitor you are sending the outputs since 3,4 will always be the googles only.
+  * the best way to control the monitor configuration on BIAC6 is with [[https://www.displayfusion.com/HelpGuide/WorkingWithDisplayFusionMonitorProfiles/|DisplayFusion]]
+  * there are several pre-configured profiles automatically loaded on BIAC6 to choose from:
+    * 1024x768, 1280x1024, 1920x1080 cloned displays ( on monitors 1,2 )
+    * 1920x1080 extended desktop ( across 1,2 )
+    * 1920x1080 cloned displays with the NNL goggles as individual display 3,4
+    * 1920x1080 extended ( across 1,2 ) with the NNL goggles as individual displays 3,4
+    * more default profiles can be added, but you can also configure and save your own profiles
+{{ :biac:experimentalcontrol:df2.png?600 |}}
+If you do not use the NNL goggles, then it's probably in your interest to leave them disabled.
+The DisplayFusion monitor configuration is accessible from the Desktop icon, from the Start Menu, by Right clicking on the desktop, from the system panel at the bottom Right.
+{{ :biac:experimentalcontrol:df4.png?400 |}}
+A couple of the 1920x1080 profiles are accessible directly from most of the system's Apps by clicking the profile on the upper right hand corner.
+{{ :biac:experimentalcontrol:df3.png?600 |}}
+The "Reset Video" desktop icon will now just revert to 1920x1080 cloned displays, with the goggles disabled.
+Because of the variable nature of the display configuration, its best to login and select your preferred display profile, to always start the experiment session with a known configuration.
+A **CLONED** configuration with goggles off, will result in a single monitor to programs like PsychToolbox and PsychoPy.
+<code matlab>
+>> run SetupPsychtoolbox.m
+>> Screen('Screens')
+ans =
+
+</code>
+Any **EXTENDED** configuration will result in multiple monitors being available
+<code matlab>
+>> run SetupPsychtoolbox.m
+>> Screen('Screens')
+ans =
+     1     2
+   %in this case
+   % 0 - the full display across the extended desktop
+   % 1 - screen #1
+   % 2 - screen #2
+</code>
+For instance PsychoPy the first screen would be #0
+<code python>
+import pyglet
+display = pyglet.canvas.get_display()
+screens = display.get_screens()
+screenNum = 0
+#get resolution of screen 0
+win_res = [screens[screenNum].width, screens[screenNum].height]
+#set the output to always go to screen 0
+win = visual.Window(size=win_res, screen=screenNum, allowGUI=True,
+                    fullscr=True, monitor=exp_mon, units='height',
+                    color=(0.2, 0.2, 0.2))
+msg1 = visual.TextStim(win, text=u"Hello world!", pos=(0,0)) #centered
+msg1.draw() #draw it
+win.flip() #put it on the screen
+core.wait(5) #wait 5 seconds
+win.close() #close it
+core.quit() #stop
+</code>
+matlab PTB the first screen would be #1 ( matlab is indexed starting at 1 instead of 0 ).
+<code matlab>
+%configure the first screen is psychtoolbox
+screenNumber = 1;
+[Window,var.winrect] = Screen('OpenWindow',screenNumber,0);
+</code>

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