Distance Learning

Distance Learning

Create a system using multiple primary touchpanels using GC Pro


Distance Learning uses video conferencing technology to help connect teachers and students. This technology allows for real-time engagement and collaboration and greatly expands the university’s global reach.

The system shown here features multiple rooms that students use to remotely interact with their instructors. Each room features multiple tabletop microphones and an HD video conferencing system. The rooms can be reconfigured for larger groups and can also be used as traditional classrooms for local instruction.


  • XTP CrossPoint 3200 Modular Digital Matrix Switcher (populated as needed)
  • 55" or Larger 1080p LCD Displays (two per classroom)
  • HD Video Conference Codec (one per classroom)
  • Extron TLP Pro 1020T TouchLink Pro Touchpanels (one per classroom)
  • Extron TLP Pro 1520TG TouchLink Pro Touchpanels (lectern)
  • Extron XPA 1002 Plus Power Amplifiers (one per classroom)
  • Extron DMP 128 C AT Digital Matrix Processor (centralized in the rack)
  • Extron AXP 50 C AT Audio Expansion Processor (one per classroom, as needed)
  • Extron IPCP Pro 550 Control Processor (centralized in the rack)
  • Extron SI 28W Two-Way In-Wall Speakers, (one pair per classroom)
  • 19" Equipment Rack Enclosure - 42U Minimum (centralized in the rack)

System Design Solution

Operational Requirements

After reviewing the customer’s requirements it was determined that the customer would like the video conferencing system’s camera to track the active microphone. The AXP 50 C AT is configured to detect the active microphone by utilizing its digital inputs; when the user presses the activation switch the microphone is unmuted. The control processor actively monitors which microphones are unmuted and recalls the appropriate camera preset to focus on the active speaker.

  1. Design User Interfaces using GUI Designer. Two interfaces are needed, one for each touchpanel.
  2. Configure the system using Global Configurator Pro.

Key Configuration Concepts

  1. The AXP 50 C AT Audio Expansion Processor is connected to the DMP 128 Digital Matrix Processor using the Dante Network. In order for these two processors to communicate with each other, the DMP 128 will need to be configured with Extron DSP Configurator Software. This enables the processor to utilize the AXP 50 C AT I/Os as a push-to-talk scenario. After that is configured, GC Pro can be set up to monitor the state of the input gain mute block on the DMP 128 and, in turn, can recall the appropriate camera preset.
Monitor to recall the camera preset
Monitor to recall the appropriate camera preset when the input gain mute block is​ un-muted.
Far end camera controls
Far end camera controls

Software Tip: GC Pro is required for this application to support multiple primary touchpanels.

Distance Learning Design Diagram
Pro Series Control Software How-To Videos

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