Difference between revisions of "Diesel Version 5:CV 9"

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{{Infobox
 
{{Infobox
|title = NMRA CV# 9
+
|title = NMRA CV 9
 
|header1 = PWM period
 
|header1 = PWM period
 
|label2 = Range of Values
 
|label2 = Range of Values
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}}
 
}}
  
== NMRA CV 9 (PWM Period) ==
+
== NMRA CV 9 - Total PWM Period ==
 
THIS FEATURE IS NOT (YET) SUPPORTED BY THE WOWDIESEL V5
 
THIS FEATURE IS NOT (YET) SUPPORTED BY THE WOWDIESEL V5
  

Latest revision as of 21:07, 27 September 2018

NMRA CV 9
PWM period
Range of Values0-255
Default Value0

NMRA CV 9 - Total PWM Period

THIS FEATURE IS NOT (YET) SUPPORTED BY THE WOWDIESEL V5

The value of CV#9 sets the nominal PWM period at the decoder output and therefore the frequency is proportional to the reciprocal of the value.
The recommend formula for PWM period should be:

PWM period (uS) = (131 + MANTISSA x 4)x 2 EXP

Where MANTISSA is in bits 0-4 bits of CV#9 (low order) and EXP is bits 5-7 for CV#9. If the value programmed into CV-9 falls outside a decoder's capability, it is suggested (but not required) that the decoder "adjust" the value to the appropriate highest or lowest setting supported by the decoder