Non-Sound Decoder MX600 - MX638 and Sound Decoder MX640 - MX659 Page 49
Bit 2 = 1: motor’s idle sound should be played-
back when driving at low speeds,
wherein the highest speed step still
playing idle sound is set in CV #391.
Bit 3 = 1: deactivate 2nd smoke fan and heating
element with this key (diesel loco with
two engines only drives with one).
Deactivate 2nd smoke fan and heating
element on the each time higher output if
this key is ON
Bit 4 = 1: braking squeal is suppressed with this
key
Acceleration
influence on diesel
sound steps
In addition to the selected speed step (as defined
in the ZSP flow diagram), actual changes in
speed (acceleration, deceleration) should also
have an influence on the sound due to the asso-
ciated increase or decrease in load.
= 0: No influence (sound depends on speed
step only)
= 64: experience has shown this to be a
practical value
= 255: maximum acceleration response
(highest sound step during acceleration)
Deceleration
influence on diesel
sound steps
Same as CV #387 but used during decelerations.
= 0: No influence (sound depends on speed
step only)
= 64: experience has shown this to be a
practical value
= 255: maximum deceleration response
Limited acceleration
influence on diesel
sound steps
This CV determines how far the sound step may
deviate during acceleration from the simple speed
step dependence (= difference between target
speed from the cab and actual speed).
= 0: No deviation; motor sounds according to
schedule, sound does not depend on
acceleration.
= 1…254: Dependence increases with value.
= 255: fully dependent on target speed.
Momentum reduction
when driving solo
(engine only)
When switching to solo driving with key defined in
CV #347 the momentum reduction is activated
(with CV #348, Bit 1):
= 0 or 255: No reduction
= 128: Momentum reduced by half
= 64: Reduced to ¼
= 1: virtually cancels all momentum.
Driving with idle
sound,
when driving solo
The diesel motor sound should remain at idle
when driving solo (with function key defined in CV
#347), until the speed step defined in CV #391 is
reached.
Bit 0 = 1: Loco shall not start driving before Start
Sound is fully played.
Likelihood of switch-
gear sparks during
acceleration
Likelihood for sparks (as per CV #158 Bit 7 for
FO7 or #394 for FO6) when accelerating
= 0: always
= 1: very rarely
= 255: very often (almost always)
Likelihood of switch-
gear sparks during
deceleration
Likelihood for sparks when decelerating (as per
CV #158 Bit 7 for FO7 or #394 for FO6)
= 0: always
= 1: very rarely
= 255: very often (almost always)
Speed drop during
upshifts
for DIESEL engines
with mechanical
transmission
This special CV applies only to diesel-mechanical
engines and defines the typical drop in speed
when shifting up.
See sound projects (i.e. VT 61)
Upshift rpm
for DIESEL engines
with mech. transmis-
sion
This special CV applies only to diesel-mechanical
engines and defines the highest rpm before shift-
ing up.
See sound projects (i.e. VT 61)
Maximum turbo
sound volume
for DIESEL engines
Turbo rpm depend-
ency on speed
for DIESEL engines
Turbo playback frequency depending on engine
speed.
Turbo rpm depend-
ency on acceleration
for DIESEL engines
Playback frequency depends on the difference of
set speed to actual speed (= acceleration).
Minimum load for
turbo
for DIESEL engines
Audibility threshold for turbochargers; the load is
derived from CV #367 and 368.
Frequency increase
of turbo
for DIESEL engines
Speed of frequency-increase of the turbocharger.
Frequency decrease
of turbo
for DIESEL engines
Speed of frequency-decrease of the turbocharger.
Thyristor control
Stepping effect
ELECTRIC engines
The pitch of the thyristor sound of many engines
(typical example: Taurus) should not ascend
evenly but rather in steps (scale).
= 1: no stepping effect, continuous ascend
> 1: ascending scale according to the correspond-
ing speed step interval.
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