Agilent Technologies 1000 Series, User Manual

Page: 87 / 154

Capturing Data 3
Agilent 1000B Series Oscilloscopes User’s Guide 87
Choosing the Trigger Mode
The trigger determines when captured data should be stored and
displayed.
When a trigger is set up properly, it can convert unstable displays or
blank screens into meaningful waveforms.
When the oscilloscope starts to acquire a waveform, it collects enough
data so that it can draw the waveform to the left of the trigger point. The
oscilloscope continues to acquire data while waiting for the trigger
condition to occur. After it detects a trigger, the oscilloscope continues to
acquire enough data so that it can draw the waveform to the right of the
trigger point.
The oscilloscope provides these trigger modes:
To set up edge triggers
1 Press [Menu] .
2 In the Trigger menu, press Mode .
3 Continue pressing the Mode softkey or turn the entry knob to select
“Edge”.
4 Then, either push the entry knob or press Mode again.
Edge Can be used with analog and digital circuits. An edge
trigger occurs when the trigger input passes through a
specified voltage level with the specified slope.
Pulse
Is used to find pulses with certain widths.
Video Is used to trigger on fields or lines for standard video
waveforms.
Alternate
Is used to trigger on non- synchronized signals.