Tech Info: GCC 213

Please use this page as a reference if you need to use the monitors, sound system or instructor podium in GCC 213.  Please turn off monitors and other equipment when finished using it.  If you are shooting in room 213 (using the green screen or black curtain), please see this page for reference.  For information on using the Wacom Cintiq tablets with your laptop, see this page.

[error]Do not sit on the rounded ends of the tables.  They will not support your weight.  If you break a table, you will be charged for the repair.[/error]

Monitor Video Routing

The four table monitors and instructor monitor, along with the instructor computer, podium laptop connection and Blu-Ray player are all connected to a matrix-style router located in the secondary podium in 213.  This allows monitors to be switched independently or together to one source.  The five monitors are destinations on the router.  The instructor computer, podium laptop connection and Blu-Ray player are all sources on the router.  Use the following table to convert the devices into numbers on the router.

Note: monitors are described as you are standing at the front, looking towards the back of the room.





 Podium Computer

 Left side, near table monitor


 Podium Laptop Connection

 Right side, near table monitor


 Blu-Ray Player

 Left side, far table monitor


 Right side, far table monitor


 Podium monitor



The most common operation is to switch all of the monitors over to one source.  To do this, press and release the ALL button on the router, then press the number for the source desired on the “IN” row (the lower row of numbered buttons).  For example, ALL then 1-IN will switch all monitors over to the podium computer.  ALL then 2-IN will switch all of them over to the podium laptop connection.

[important]When using a laptop at the podium, the highest quality image will be achieved by setting the external connection to 720p (1280×720).  1080p is too much bandwidth for the cable lengths to the furthest monitors and they may blink or freeze when set to that mode.  When using Mavericks, inside the Display Preferences you must take it off of Best For Display, set it to Scaled, and pick either 720p or 1280×720 from the list.[/important]

[notice]Please note that the monitor on the podium can also be switched just like the student monitors, and is not dedicated to the podium computer as it used to be.  This is so that the instructor can see exactly what the students are seeing, if desired.  To switch only the podium monitor over to a particular source, press the 5 button on the OUT row (top row) to select the podium monitor as a destination, then the desired source you wish to send to it on the IN row (bottom row).  You can also use this to switch over individual student monitors (OUTS 1 through 4) as well.[/notice]

Table Cabling and Student Monitor Use

The cables at each table provide 5 network lines for hard-wired connections to student laptops.  There is an additional DVI cable and audio connection for connecting a student laptop to the monitor at that table, with a mini display port adapter provided for convenience (the adapter can be removed for a direct DVI connection to a laptop but it is tethered to the DVI cable).  To use this connection, simply connect the cable to your laptop.  The monitor will auto-switch to that connection; do not change inputs on the monitor.  In other words, the laptop connection automatically overrides what the instructor is sending.  To see what the instructor is sending to your table monitor, disconnect the cable from your laptop.  As detailed in this post, it may be necessary to remove the adapter from the end of the DVI cable in order for the video signal to auto-switch back to the instructor.  This is a temporary fix.

[important]Again, 720p (1280×720) yields the best results for a laptop connection.  You may run mirrored displays or separate.[/important]

[notice]Please note that it is not possible to send a laptop signal from one of the student tables to all the monitors in the room.  Each DVI connection at the tables only overrides that one monitor.  If a student needs to share something from their own laptop with all the monitors, they’ll need to connect it at the podium position.[/notice]


Sound can be patched as labelled on the patch panel for advanced users.  But for most users, the default setup is fine.  To use the default setup, simply pull out any patches from the patch panel in the second podium.  In the default setup, audio from the podium computer is routed to the two powered speakers at the front of the room plus the subwoofer.  You may adjust the volume of the individual speakers on the wall but it’s easier to use the computer’s built-in volume control on the keyboard.

The laptop audio connection defaults to the speakers in the rear of the room plus the subwoofer.  Again, use your built-in volume control or adjust the speakers themselves.

The Blu-Ray player can either be patched to the room’s sound system (stereo L+R) or the sound will be automatically routed to the speakers built into each of the four flatpanel monitors.  Simply turn up the volume on each monitor after routing the Blu-Ray (source 3) to the monitors.

Any questions, see Dave or Cory.