Speed table cvs, Cv 67-94 loadable speed table, Description – SoundTraxx Tsunami Steam Technical Reference User Manual

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Tsunami Technical Reference

Page 52

CV 67-94
Loadable Speed Table

Description

The loadable speed table is made up of 28 CVs. Each CV contains a value,

n, between 0 and 255 that specifies the percentage of the maximum throttle

voltage interpreted as n/255 that is to be applied to the motor when the

speed step in use corresponds to that CV.

D0-D7:

Speed Table Data

The loadable speed table may be used in the 14, 28 and 128 speed step

modes. When 14 speed step mode is in effect, the DSD will use a curve

defined by every other speed table value starting with speed step 1.

When 28 step mode is enabled, the DSD will simply use one table value for

each speed step.

When 128 step mode is enabled, the DSD will interpolate 4-5 points between

each speed table entry to build a 128 point curve.

Note that the DSD will not use the loadable speed table until bit 5 in both CV

25 and CV 29 are set to 1.

Default values: The default values provide a linear (straight line) response.

Individual CVs are loaded as follows:

CV

Speed Step

Value

CV 67

(Speed Step 1):

9

CV 68

(Speed Step 2):

18

CV 69

(Speed Step 3):

27

CV 70

(Speed Step 4):

36

CV 71

(Speed Step 5):

45

CV 72

(Speed Step 6):

55

CV 73

(Speed Step 7):

64

CV 74

(Speed Step 8):

73

CV 75

(Speed Step 9):

82

CV 76

(Speed Step 10):

91

CV 77

(Speed Step 11):

100

CV 78

(Speed Step 12):

109

CV 79

(Speed Step 13):

118

CV 80

(Speed Step 14):

127

CV 81

(Speed Step 15):

137

Speed Table CVs

Bit 7

Bit 0

D7

D6

D5

D4

D3

D2

D1

D0

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