B+K precision 2510B Series, Руководство пользователя, Страница: 72 / 184

Trigger 72
Window Trigger
Windows trigger provides a high trigger level and a low trigger level. The instrument triggers when the
input signal passes through the high trigger level or the low trigger level.
There are two kinds of window types: Absolute and Relative . They have different trigger level adjustment
methods.
Under Absolute window type, the lower and the upper trigger levels can be adjusted respectively via the
Level knob
Under Relative window type, adjust the Center value to set the window center
Adjust the Delta value to set the window range, the lower and the upper trigger levels always move
together.
Figure 5.19 Window Trigger
• If the lower and the upper trigger levels are both within the waveform amplitude range, the oscilloscope
will trigger on both rising and falling edge.
• Suppose the upper trigger level is within the waveform amplitude range while the lower trigger level
is out of the waveform amplitude range. In that case, the oscilloscope will trigger on rising edge only.
• Suppose the lower trigger level is within the waveform amplitude range while the upper trigger level
is out of the waveform amplitude range. In that case, the oscilloscope will trigger on falling edge only