5.Front Panel Operation
16
Term Explanation
Pulse Width:
There are two kinds of Pulse Width—positive and negative.
Positive Pulse Width is the time span between thresholds of 50% of the rising edge
amplitude to the next 50% of the falling edge amplitude.
Negative Pulse Width is the time span between thresholds of 50% of the falling edge
amplitude to the next 50% of the rising edge amplitude.
Pulse Width is determined by Period and Duty Cycle;
the formula is: Pulse Width = Period * Duty Cycle.
Edge Time:
The time span between the thresholds of the 10% to 90% of the rising edge
amplitude is called Rising Time.
The time span between the thresholds of the 90% to 10% of the falling edge
amplitude is called Falling Time.
The Rising Time and the Falling Time together are called Edge Time.
To Set the Pulse Width / Duty Cycle
(1)
Press
F4
button, the chosen menu item is highlighted, the focused parameter is
displayed in Parameter bar 1. Press
F4
to switch between Pulse Width/Duty.
(2)
Turn the
knob
to change the value directly;
or press the number keys to input the desired value and choose the unit.
The Pulse Width
/Duty Cycle
is limited by Period. The min value of the Pulse Width is 40ns.
Parameter bar 1
Pulse Width
Input box
Current parameter
Pulse Width
Figure 5-8: Set the Pulse Width of Pulse signal
To Set the Edge Time
(1)
Press
F5
button, the "
Edge Time
" menu item is highlighted, the current value of
the edge time is displayed in Parameter bar 1.
(2)
Turn the
knob
to change the value directly;
