Spectrum Steam Sound User Guide(1.4MB) - Bachmann

Basic Programming3. Compute and record the CV value for each step using the followingformula:Percentage of Full Speed (from Step 2)CV Value = 255 X ———————————————————1004. Program CV 67 with the value computed in step 3 for the first data entry(Speed Step 1).5. Program CV 68 with the value computed in step 3 for the second dataentry (Speed Step 2).6. Repeat step 5 for each of the remaining 26 CVs from CV 69 to CV 94until they have been programmed with their respective values.7. Set CV 25 to 16 to select the user loadable speed table.8. Set bit 4 of CV 29 to 1 to enable speed table use. Refer back to theprevious section “Configuring the Decoder” to determine the correctvalue for CV 29.Table C may be followed as an example and lists the CV values for a straightlineresponse.Adjust the Forward and Reverse TrimTsunami provides two CVs for adjusting or ‘trimming’ the forward and reversespeeds.CV 66, Forward TrimCV 95, Reverse TrimThese CVs multiply all data points in the speed tables by a factor of n/128 (nis the CV value) allowing the overall speed curve to be adjusted up or downwithout reloading all 28 data points again. These CVs will not have any effectwhen the speed tables are disabled (i.e., CV 29, bit 4 = 0)These CVs may contain any value between 0 and 255. Trim values between129 and 255 will increase speed curve values between 100% and 200% inapproximately 1% steps. Trim values between 1 and 127 will decrease speedcurve values between 1% and 99%. A value of 128 yields a scaling factor of1.0 and has no effect on the speed curve.Using different values for the forward and reverse trim will yield differentforward and reverse speeds.OEM Steam Sound User’s Guide Page 19Return to Main User's GuideReturn to Table of Contents