R5906113 UDX 07/07/2017 333. Physical Installation3.3 Remote control, protocol setupAbout the used protocolThe protocol is the code send out by the remote control when a button is pressed. Depending on this code, the projector can decodethe signals. The remote control can be used with two different protocols, RC5 and NEC. Depending on the projector to control theremote control can be switched between these protocols.Which protocol to use• The NEC protocol have to be used for Barco projectors based on the Pulse platform: F70, F80, F90, HDX 4K, UDX, ...• The RC5 protocol have to be use all other Barco projectors: HDX W, HDF W, HDQ 2K, ...How to set1. Remove the cover. For more info on how to remove, see "Remote control, Battery installation", page 30.2. Place the switch in the NEC position.Image 3-5Remark with RC5 protocolNot all buttons of the Pulse RCU are one-to-one compatible with the legacy Barco RCU. Button pairs SHUTTER open/close andPOWER on/off emit the same code (per pair) when in RC5 mode, because the legacy RCU’s only had 1 button for Shutter and 1button for Standby.