Page 42 Non-Sound Decoder MX618 - MX634 and Sound Decoder MX640 - MX648
Volume for function sound F7
Volume for function sound F8
Volume for function sound F9
Volume for function sound F10
Volume for function sound F11
Volume for function sound F12
Volume for function sound F13
Volume for function sound F14
Volume for function sound F15
Volume for function sound F16
Volume for function sound F17
Volume for function sound F18
Volume for function sound F19
#674, #677…#698 = volume for sounds on F20, F21…F28.
Note: The CV’s between the above (#570, 572, #513, 515, 516, 518 etc.) hold information for the relevant sound
samples (sample numbers, loop parameters etc.), which can also be modified if needed, usually with the CV #300
procedures.
Switch input sounds - Volume adjustments:
Volume setting for the sound activated by switch input S1.
= 0: full volume, original sample volume (same as 255)
= 1 .. 254: reduced volume 1 - 99,5 %
= 255: full volume
Volume setting for the sound activated with switch input S2
Volume setting for the sound activated with switch input S3
Note: The CV immediately ahead of the CV’s listed (# 740, 742) contains the sound sample numbers to be played.
Random sounds - Volume adjustments:
Volume setting for sound activated by random generator Z1
Volume setting for sound activated by random generator Z2
Volume setting for sound activated by random generator Z3
Volume setting for sound activated by random generator Z4
Volume setting for sound activated by random generator Z5
Volume setting for sound activated by random generator Z6
Volume setting for sound activated by random generator Z7
Volume setting for sound activated by random generator Z8
Note: The CV immediately ahead of the CV’s listed (#744, 747 etc.) contain the sound sample numbers to be played.
5.5 Steam engine
Basic sound settings
The following CV’s can be programmed both “normal” (i.e. CV #... = ...) and “incremental”. “In-
cremental programming” is especially useful when the proper value cannot be calculated in advance
and must be determined by trial, which is often the case with many sound parameters.
The “Lead CV” in each case is the first of a group of 3 CV’s, which are edited and displayed together
on a ZIMO MX31/MX32 cab during the “incremental programming” procedure.
See chapter
5.4 “Basic settings independent of powertrain”
Chuff sound
frequency with
“virtual cam sensor“
also see CV #354 in
this table
(chuff frequency at
speed step 1)
CV #267 is only active if CV #268 = 0:
Chuff beats follow the “virtual cam sensor”; an ac-
tual cam sensor is not needed in this case.
The default setting “70” results in about 4, 6 or 8
chuffs per wheel revolution, depending on the
chuff set selected; because it also depends in
large part on the motor and gearbox used, an in-
dividual adjustment is necessary in most cases in
order to achieve the exact chuff frequency. This is
the purpose for CV #267:
The lower the value the higher the chuff frequency
and vice versa. The setting should be performed
at a low speed (around speed step 10), but not at
the lowest speed step 1.
Switching to real
cam sensor
and
trigger count for chuff
rate
and
Special function for
“Simple articulated”
steam engines
= 0: “Virtual“ cam sensor is active (to be adjusted
with CV #267, see above).
= 1: real cam sensor is active (connected to
switch input 2 of the MX640, see chapter 6);
each negative spike results in a chuff beat.
= 2, 3, 4 … real cam sensor, several triggers in
sequence (2, 3, 4 …) result in one chuff beat.
= 128 (Bit 7=1 with “virtual” cam sensor): second
driver is a bit slower; only meaningful if a
second sound sample is available in the
sound project.
= 192 (Bit 6 and 7 = 1): When no separate sound
sample is available for the second driver, the
same sample is played back for the second
driver albeit a bit slower.
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