SoundTraxx Tsunami Steam Technical Reference - Manual (Page 24)

Tsunami Technical Reference Page 22
CV 25
Speed Table Select Register
Description
Used to select one of 15 Speed Curves:
D0-D6: Table Identifier/Speed Step Value
MIDSPD: 0 = Factory Speed Table Select
1 = Mid Range Speed (Not used)
When MIDSPD = 0, D0-D6 defines which preset factory speed table is used.
0 = Disabled, Speed Curves not used
1 = Disabled, Speed Curves not used
2 = Linear Speed Curve
3 = Logarithmic Curve 1
4 = Logarithmic Curve 2
5 = Logarithmic Curve 3
6 = Logarithmic Curve 4
7 = Logarithmic Curve 5
8 = Logarithmic Curve 6
9 = Logarithmic Curve 7
10 = Exponential Curve 1
11 = Exponential Curve 2
12 = Exponential Curve 3
13 = Exponential Curve 4
14 = Exponential Curve 5
15 = Exponential Curve 6
16 = User Defined Speed Table defined by CVs 67-94.
CV 25 may be programmed with any value between 0 and 31. Values
between 2 and 15 allow the user to select from one of 14 predefined speed
curves as depicted below. The logarithmic curves provide a shallower
speed response as the throttle is increased. These curves are useful for
locomotives that require a high starting voltage to get moving or matching
a highly geared locomotive to one that has less gearing. The exponential
curves are useful for slowing down locomotives that have a “slot car”
response.
Setting this CV to a value of 16 will enable the speed curve programmed into
CVs 67-94. This curve may be programmed by the user to get virtually any
response desired.
Primary CVs
Bit 7 Bit 0
MIDSPD D6 D5 D4 D3 D2 D1 D0