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100% of the period of the envelope. When a period has 0% duty, the period
will be eliminated.
K0: Off period, there is no output current at this period, or i=0.
K1: current ramp up period, current ramps up to the peak current intensity I
from 0 μA.
K2: peak current plateau period, the output current reaches
the programmed peak value and maintains at the peak value for the period.
K3: current ramp down period, current ramps down from the peak current
intensity I to 0 μA.
Period: Period of the modulated pulse. The pulse can be modulated by the carrier
frequency F. The period is programmable from 4 ms to 60000 ms. The
outline of the waveform is often referred to as the envelope of the waveform,
when the pulse is modulated, as shown in dotted lines in the figure.
Phase: is the relationship of the waveforms of the two channels. Channel 1 is used
as the reference. A phase of 180 degrees equals to one period of channel 1. The
phase of Channel 2 determines the time of the start point of the period of
Channel 2. When phase is 0 degree, the waveform of Channel 2 is aligned with
the waveform of Channel 1. When the phase is 180 degrees, the waveform of
channel 2 one period later than CH1.
