Decoder function key & output programming http://www.zimo.at/web2010/documents/cvliste_en.pdfProgramming high numbered CVs:There are extended CV's and like everyone else, there is a "trick" to get these "higher numbered" CV's that do not meet the NMRA spec. Some DCC systems cannot go over CV 255. Note that the NCE system and current Digitrax systems can access these higher CVs directly and of course the Zimo system. I would guess the Massoth does, but I'd like to hear from someone on this.There is a "shift" function to access CV's over 128 on most systemsCV 7 is used to do the shift function, The "tens" digit of CV7 does what you want (read the manual for what the 1's and the hundreds digits do)Set CV7 = 110 and on the next CV programmed, you will "add" 100 to the CV address, i.e. program CV 65 and it will really program CV 165Set CV7 = 120 and on the next CV programmed, you will "add" 200 to the CV address, i.e. program CV 65 and it will really program CV 265Set CV7 = 130 and on the next CV programmed, you will "add" 300 to the CV address, i.e. program CV 65 and it will really program CV 365Set CV7 = 0 to return to normal.If the hundreds digit of CV7 = 1, then this mode stays on until you power the decoder down or do CV7=0.If the hundreds digit of CV7 = 2, then this mode stays on forever until you do a CV7=0. CV 266 = main volume, usually defaults to 63, can increase to 100 usually without distortion.Note: usually F8 turns the sound on and off, and it is default off. Sometimes you have to also hit f0 to turn the headlamp on too. If you have no sound this is probably your problem.On the NCE system, I had to hig F8 twice to get the sound on. You can also just hold down the F8 button until the sound comes on. Some tips on unique decoder CV's CV151 - motor brake, change freqs in zcs.... assign function key to activate 151 had some issues with MX699LV programming, seems to program ok, but CV readback was inconsistent on the MX!0 It has 3 keepalive caps on it, so I increased the programming current to the programming voltage is 14v.I increased OVC current from 0.2 to 0.5 that helped. Runnint TP several times gave pretty consistent results.