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MAXIMUM VOLTAGE (CV5)
This is the amount of voltage applied to the motor at full speed. A value of 255 means
send the full available track voltage to the motor. Lower numbers will tell the decoder
to send proportionally less voltage when full speed is called for.
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MAX VOLTAGE: _
MAX VOLTAGE: _
MAX VOLTAGE: _
MAX VOLTAGE: _
MAX VOLTAGE: _
A value of 192 will cut the maximum speed to 192/255 (about 75%) of the track
voltage. Most decoders interpret a value of 0 to mean 255.
MID SPEED VOLTAGE (CV6)
This is the amount of voltage applied to the motor when the middle speed step (14 or
64 depending on speed mode) is requested. A value of 128 means to send about ½
the available track voltage (128/255 of the voltage) to the motor.
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MID VOLTAGE: _
MID VOLTAGE: _
MID VOLTAGE: _
MID VOLTAGE: _
MID VOLTAGE: _
Lower or higher values will send proportionally higher or lower voltages at mid-speed.
Most decoders interpret a value of 0 to mean 128.
ACCELERATION (CV3)
With this CV set to 0 the decoder will be in what is commonly called ‘direct drive’. The
decoder will instantly jump to the speed requested by the throttle. You can add
momentum by adjusting this parameter. See also MOMENTUM BUTTON, Page 14.
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ACCELERATION: _
ACCELERATION: _
ACCELERATION: _
ACCELERATION: _
ACCELERATION: _
A value of 1 will force a delay of .007 seconds between speed steps in 128 speed
mode (.032 seconds in 28 speed mode). This is equivalent to .896 seconds (.007 x
128 speeds) to go from speed 0 to full speed. A value of 10 will yield about 8.9
seconds to full speed.
DECELERATION (CV4)
Deceleration works to delay the slowing down of the motor with the same timing as
acceleration.
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DECELERATION: _
DECELERATION: _
DECELERATION: _
DECELERATION: _
DECELERATION: _
MOTOR PWM FREQUENCY (CV9)
DCC decoders almost always drive the motor of the locomotive with Pulse Width
Modulation (PWM). This is a series of full voltage pulses that vary in width from very
narrow for low motor speed to very wide providing higher power to the motor. How
often the pulses are sent is called the frequency.
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PWM FREQ: _
PWM FREQ: _
PWM FREQ: _
PWM FREQ: _
PWM FREQ: _
The frequency is adjustable on some decoders. Settings for this CV vary so consult
your decoder manual for the proper value. If your decoder is capable of ‘silent’
operation usually a 0 is required.