775, 776 (ex T678.0, T679.0) "Orange" – 8bit project for MTB TT for MX648P16
Sound sample
Project Information
- The sound project is optimized for MTB model with MX648P16 decoder.
- The sound project is designed for 8-bit sound decoders of the MX series.
- Recommended minimum software version for decoder is 40.22.
- The decoder has base address set to 3.
- Reset can be performed by setting CV8 = 8.
Function Assignment
Function mapping and CV settings can be modified.
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F0 Position white lightsAffected function output: FA0v, FA0rDirection dependent
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F1 Red lightsAffected function output: FA1, FA2Direction dependent
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F2 HeadlightAffected function output: FA3,FA4Direction dependent
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F3 Shunting mode – right position white lights to crossAffected function output: FA0v, FA0r
- speed range reduced to ½
- reduces acceleration / braking times to ¼ of CV3 and CV4
- triggers short horn at start
- turns off red lights if they are on
- turns off headlight if it is on
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F4 Short horn
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F5 CoastingIdle running, independent of set speed
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F6 Engine acceleration to max RPMIndependent of set speed, even when stationary
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F7 Long horn
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F8 Sound on/offEngine on/off
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F9 Cabin lightingAffected function output: FA5, FA6Direction dependent, turns off at start
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F10 Short whistle
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F11 Long whistle
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F12 Uncoupling screw
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F13 Coupling screw
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F14 Sanding
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F15 Dispatcher whistle - newCall to readiness
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F16 Dispatcher whistle - oldCall to readiness, departure
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F17 Compressor
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F18 Unused
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F19 Wheel squealing in curves
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F20 Station announcementExpress train R540
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F21 Station announcementExpress train R640
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F22 Unused
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F23 Unused
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F24 Unused
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F25 Unused
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F26 Sound muting
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F27 Volume decrease
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F28 Volume increase
Max Speed Setting
We recommend setting max speed via CV57, not via CV5. Setting max speed via CV5 may cause changes in sound range. Acceleration time CV3 and deceleration time CV4 settings are not affected by max speed setting via CV57.
Shunting Mode
In shunting mode, all 4 position lights are turned on. If this functionality is not required, it can be disabled by setting CV430 = 0. To re-enable, set CV430 = 3. Enabling the mode also turns off red lights and reflector if they are on. If this functionality is not required, it can be disabled by setting CV436 = 0. To re-enable, set CV436 = 3.
The mode reduces acceleration and braking times to ¼ of the setting in CV3 and CV4. If this functionality is not required, it can be disabled by setting CV124 = 144. Complete deactivation of acceleration and braking times is possible by setting CV124 = 147.
If shunting mode functionality is not required, it can be disabled by setting CV124 = 128.
Standard shunting mode setting in the project is CV124 = 146.
In shunting mode, a short horn is triggered at each start. This functionality is implemented by script. For the short horn to be triggered, three conditions must be met:
- The function must be enabled via F3.
- Engine sound must be enabled via F8.
- The model must be starting from zero speed.
Setting CV837 = 8 disables this functionality, standard setting is CV837 = 0.
F5 Coasting vs F6 Engine Acceleration to Max RPM
If both functions are enabled, coasting takes precedence.
Cab Lighting
If the driver's cab lighting is turned on via F9, it automatically turns off when the model is moving and turns on again when the model stops/starts. For technological reasons1), this is implemented by script. If this functionality is not required, it can be disabled by setting CV837 = 16. Standard setting is CV837 = 0.
If you want cab lighting functionality without automatic turning off during model movement, set CV43 = 128, CV837 = 16. To disable this mode, set CV43 = 0, CV837 = 0.
1) With standard settings, it is possible to have slow lighting and dimming of functional output or turning off functional output during movement, but not both functions simultaneously.*
Compressor
The project implements two versions of compressor activation, both are implemented by script:
- Random compressor activation, which is conditioned by engine sound being enabled via F8. This is turned off by enabling compressor via F17.
- Enabling compressor via F17. It is conditioned by F8 being enabled and zero speed.
Setting CV837 = 1 disables the possibility of activating compressor via F17.
Setting CV837 = 2 disables random compressor activation.
Setting CV837 = 3 disables both options, standard setting is CV837 = 0.
Wheel Squealing in Curves
Wheel squealing in curves is implemented by script. For triggering, several conditions must be met:
- The function itself must be enabled via F19, engine sound must be enabled via F8.
- The sound will not trigger at very slow speed, set speed must be more than 14 (from speed range 0 – 126).
- The sound will not trigger at high speed, set speed must be less than 100 (from speed range 0 – 126).
Setting CV837 = 4 disables wheel squealing in curves, standard setting is CV837 = 0.
User Function Layout Setting
User function layout setting is possible via CV400 – CV428. The project does not use it for its needs.
Decoder Reset
It may happen that while setting up the decoder you make a mistake that you cannot fix or get lost in settings. In this case, we recommend performing a decoder reset. To reset the decoder, program CV8 = 8. This programming will perform a reset to sound project settings.
Basic CV Settings in Project
- CV3 = 16
- CV4 = 14
- CV5 = 1
- CV6 = 1
- CV33 = 1
- CV34 = 2
- CV35 = 12
- CV36 = 64
- CV37 = 3
- CV38 = 0
- CV39 = 0
- CV40 = 0
- CV41 = 0
- CV42 = 0
- CV43 = 0
- CV44 = 0
- CV45 = 0
- CV46 = 0
- CV57 = 125
- CV61 = 97
- CV105 = 145
- CV106 = 5
- CV124 = 146
- CV125 = 88
- CV126 = 88
- CV127 = 88
- CV128 = 90
- CV131 = 88
- CV132 = 88
- CV190 = 3
- CV191 = 2
- CV254 = 204
- CV255 = 4
- CV256 = 5
- CV266 = 100
- CV395 = 130
- CV396 = 27
- CV397 = 28
- CV430 = 3
- CV432 = 193
- CV433 = 197
- CV434 = 194
- CV435 = 197
- CV836 = 1
- CV837 = 0
Sound Sample Numbers
"Script" means that the corresponding sound is used in the script, outside of normal use within CV. The sound number is listed here for possible standalone use of the sound when the script is disabled.