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Chapter 3 Features and Functions
Pulse Waveforms
3
Pulse Duty Cycle
The pulse duty cycle is defined as:
Duty Cycle = 100 X Pulse Width ÷ Period
where the pulse width represents the time from the 50% threshold of the
rising edge of the pulse to the 50% threshold of the next falling edge.
• Pulse duty cycle: 0% to 100% (see restrictions below). The default is
10%.
• The specified pulse duty cycle must conform to the following
restrictions determined by the minimum pulse width (Wmin). The
function generator will adjust the pulse duty cycle as needed to
accommodate the specified period.
Duty Cycle >
100 X Wmin ÷ Period
and
Duty Cycle <
100 X (1 – Wmin ÷ Period)
where:
Wmin = 20 ns for period <
10 s.
Wmin = 200 ns for period > 10 s, but <
100 s.
Wmin = 2 µs for period > 100 s, but <
1000 s.
Wmin = 20 µs for period > 1000 s.
• The specified pulse duty cycle must conform to the following
restriction determined by the edge time. The function generator will
adjust the pulse duty cycle as needed to accommodate the specified
period.
Duty Cycle >
100 X (1.6 X Edge Time) ÷ Period
and
Duty Cycle <
100 X (1 – (1.6 X Edge Time) ÷ Period)
• Front-Panel Operation: After selecting the pulse function, press the
Dty Cyc softkey. Then use the knob or numeric keypad to enter the
desired duty cycle.
• Remote Interface Operation:
FUNCtion:PULSe:DCYCle {<percent>|MINimum|MAXimum}
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