Technical data
Table Of Contents
- Agilent 3000 Series Oscilloscopes-At a Glance
- In This Book
- Contents
- Figures
- Tables
- Getting Started
- Step 1. Inspect the package contents
- Step 2. Turn on the oscilloscope
- Step 3. Load the default oscilloscope setup
- Step 4. Input a waveform
- Step 5. Become familiar with the Front Panel Controls
- Step 6. Become familiar with the oscilloscope display
- Step 7. Use Auto-Scale
- Step 8. Compensate probes
- Step 9. Use the Run Control buttons
- Displaying Data
- Capturing Data
- Making Measurements
- Saving, Recalling, and Printing Data
- Oscilloscope Utility Settings
- Specifications and Characteristics
- Service
- Safety Notices
- Index
3Capturing Data
78 Agilent 3000 Series Oscilloscopes User’s Guide
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:
• 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.
To set up edge triggers
1 Press Mode/Coupling.
2 In the Trigger menu, press Mode until “Edge” is selected.
3 Press Source until the desired waveform to trigger on is selected:
• CH1
• CH2
• EXT — the external trigger input.
• EXT/5 — the (5:1) attenuated external trigger input.
• AC Line — the AC power line.