User Manual

Chapter 2 Basic Waveform Output RIGOL
User‟s Guide for DG5000
2-7
To Output Pulse Waveform
To output a pulse waveform from CH1 with 20 kHz frequency, 2.5 Vpp amplitude, 500
mVDC offset, 10 μs pulse width (20% duty cycle), 50 ns leading and trailing edge time
and 8 μs delay. Refer to “To Output Sine Waveform” to configure the parameters
and output. This section will only talk about “Pulse Width/Duty Cycle”, “Leading”,
“Trailing”, “Delay” and “Recover Delay”.
Pulse Width
10％
50％
90％
t
Rise
t
Fall
Pulse Width/Duty Cycle
Pulse Width/Duty Cycle is defined as the time from the 50% threshold of a rising edge
amplitude to the 50% threshold of the next falling edge amplitude.
Press Pulse  Width/Duty to highlight “Pulse Width”, and then use the numeric
keyboard to input “10” and select the unit “μs” in the pop-up menu.
 Pulse Width is limited by the “Minimum Pulse Width” and the “Pulse Period”.
Minimum Pulse Width = 4 ns
Pulse Width ≥ Minimum Pulse Width
Pulse Width ≤ Pulse Period - Minimum Pulse Width × 2
 Pulse Width and Duty Cycle are correlative. Once a parameter is changed, the
other one will be automatically changed. Press the softkey again to switch to
“Duty Cycle” (having been automatically set to 20% in this example, refer to “Set
the Duty Cycle” for manual setting). Pulse Duty Cycle is limited by the
“Minimum Pulse Width” and the “Pulse Period”.
Pulse Duty Cycle ≥ 100 × Minimum Pulse Width ÷ Pulse Period
Pulse Duty Cycle ≤ 100 × (1 - 2 × Minimum Pulse Width ÷ Pulse Period)
 Selectable Pulse Width units: sec, msec, μsec, nsec.
 You can also use the knob to modify this parameter.