Connect the hardware
This step makes the three connections between the VC system and the wall. Leave the VC system's camera, microphones, speakers and network connection as they are.
1. The call picture, VC system to capture card
Connect the VC system's main HDMI output, the one that would normally drive the screen in the room, to an HDMI input of the capture card in the wall computer. On a Cisco codec, use HDMI output connector 1, the one that carries the touch interface.
The VC system now treats the capture card as its display. It chooses its output resolution from what the capture card reports:
- For UHD, use a capture card that accepts 3840 x 2160 and UHD-rated HDMI cables.
- If the VC system still sends 1080p, set the capture card's EDID to UHD with the card maker's own utility.
The capture card passes the picture to Canvus live, frame by frame. See Video inputs for the capture cards that Canvus supports.
2. Wall content into the call, wall computer to VC system
Connect a spare HDMI output of the wall computer's graphics card to the VC system's HDMI content input, the input a laptop normally uses to share its screen.
Add the output to the desktop and set its resolution:
- On Windows, use the Nvidia Control Panel or Windows display settings.
- On Ubuntu, add it in
xorg.conf.
Place the output beside the wall's displays, as in the Video outputs procedure. Choose a mode that the VC system's content input accepts, for example 3840 x 2160 at 30 Hz for a Cisco codec or 1920 x 1080 at 60 Hz for a VC system that takes 1080p. Supported VC systems lists the content input of each model.
Note
A wall that uses Nvidia Mosaic on Windows needs a second graphics card of the same model for this output, because Mosaic and non-Mosaic displays cannot share one card. On Ubuntu, one free output is enough.
Some VC systems start sharing as soon as their content input has a signal. Check the VC system's setting for automatic sharing and choose what suits the room: share from the wall whenever the output is active, or start sharing from the VC system's controls.
3. Touch, SANDER into the VC system
Plug SANDER into a USB port of the VC system:
- Cisco: a USB-A port.
- Neat Bar: the USB-C port, with a USB-C to USB-A adapter.
- Other models: the port the maker names for a touch display.
The USB port powers SANDER. The VC system detects a standard USB touchscreen and pen, with no driver to install.
SANDER reaches the wall computer over the network the wall's displays already use for touch: by Wi-Fi or by Ethernet cable. SANDER has both. The cable can also go straight to a free network port of the wall computer. You make the connection in Set up touch control.
Audio
The VC system plays the call through its own speakers and cancels the echo of what it plays. Keep it that way.
The HDMI output also carries the call audio into Canvus, but Canvus video inputs start muted. Leave the call input muted in Canvus, so the room does not hear the call twice and the VC system's echo cancellation keeps working.