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Multicasting

Multicasting means connecting the different displays via WIFI or Lan network instead of connecting via Video cables.

With Multicasting the system sends timing signals to the displays instead of a video signal. Multi means that the signal sent by one main system can be received by multiple "follow" (client) systems. This means that all receiving displays need a computer to process the data. With the use of Raspberry PI computers (a 40dollar/Euro computer) it is still a cost saving solution compared to systems with long video cables and video splitters. Especially for Alternating matches this is the best solution since it is possible to show different timings on different screens.

 

Hardware

Ensure All systems are connected to the same network. Preferably by LAN cable. The quality of the standard wifi adapter of a Raspberry PI is not good enough. So use a lan cable for Raspberry PI's. For PC's the quality of the wifi adapter is in most cases okay.

 

Configuring Multicasting. Main system:

First select the main system. This is the system used to control the timer. Preferably this is a PC or better a Laptop with a good WIFI antenna. The screen of the laptop doesn't need to be seen by the archers. It is mainly for the DOS to control the timer.

 

The main system needs to send the timing signals over the network. So you need to enable the Checkbox "Broadcast time stamps over LAN network".

  • Go to the settings menu by pressing:
  • Select the network settings Tab.
  • Enable checkbox "Broadcast time stamps over LAN network"
  • Press "Save as startup settings" to ensure the checkbox is enabled next time you start up the program.

  • Close the settings menu by pressing:

 

Configuring "Follow" (Client) systems:

Next configure the "Follow" (Client) systems. it is possible to use multiple follow systems. Typically 2 systems, one on the left side of the archery range. The other one on the right side of the archery range. For large archery ranges it is possible to use more follow systems. There is no real limitation in number of follow systems.

On every Follow system:

  • Go to the Timing and sequence menu by pressing:
  • Select "Follow" on the top side of the menu.

  • Select "Left Side" at startup for the screens on the left side of the archery range. (This is important for alternating shooting to show the correct timing for the left side archer):

 

  • Select "Right Side" at startup for the screens on the right side of the archery range. (This is important for alternating shooting to show the correct timing for the right side archer):

 

  • Close the Timing menu by pressing:

 

 

 

 

 

 

 



© 2020, Henk Jegers