I also have hex codes for an extron scaler dvs-204 but I don't know how to import these codes into the mx-800..
Signal Timing 2 IR Remote Control Hex codes and Signal Timing • Signal Timing Carrier Frequency = 38 KHzDuty Ratio = T1/Tc = 1/3TcT19ms9ms0.56ms4.5ms2.5msTfTfLead CodeCustom CodeCustom CodeData CodeData Code1st FrameRepeat Code0.56msBit “0”1.125ms0.56msBit “1”2.25msBit DescriptionC0C1C2C3C4C5C6C7C0C1C2C3C4C5C6C7D0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7Tf : 102msThe transmitted waveform as long as a key is depressed.Frame Interval : Tf Hex codes 1 IR Remote Control Hex codes and Signal Timing • Hex Codes 123489101112131415161718192021222324252627282930313233343536373839404142434445657 Figure 1. — Corresponding button numbers To find the hex data codes for your individual Extron IR Remote Control, match your button positions with those in figure 1, then look up the corresponding button number in the Hex Data Code Table, (e.g. button # 16 [arrowed] has the hex code 0F). N Your remote will not have all the buttons shown. The figure covers the button combinations of all Extron IR Remote models available. HEX Data Code T able (Refer to figure 1 for button number) Button # HEX Code 1 00 2 01 3 02 4 03 5 04 6 05 7 06 8 07 9 08 10 09 11 0A 12 0B 13 0C 14 0D 15 0E 16 0F 17 10 18 11 19 12 20 13 21 14 22 15 23 16 24 17 Button # HEX Code 25 18 26 19 27 1A 28 1B 29 1C 30 1D 31 1E 32 1F 33 40 34 41 35 42 36 43 37 44 38 45 39 46 40 47 41 48 42 49 43 4A 44 4B 45 4C Signal timing with code positions are shown below