Triggering - Tektronix TDS2000C series User Manual

Understanding Oscilloscope Functions
Saving a Setup
Recalling a Setup
Default Setup

Triggering

20
The oscilloscope saves the current setup if you wait five seconds after the last
change before you power off the oscilloscope. The oscilloscope recalls this setup
the next time you apply power.
You can use the Save/Recall Menu to save up to ten different setups.
You can also save setups to a USB flash drive. The oscilloscope accommodates
a USB flash drive for removable data storage and retrieval. (See page 63, USB
Flash Drive Port.)
The oscilloscope can recall the last setup before the oscilloscope was powered off,
any saved setups, or the default setup. (See page 91, Save/Recall.)
The oscilloscope is set up for normal operation when it is shipped from the
factory. This is the default setup. To recall this setup, push the Default Setup
button. To view the default settings, refer to Appendix D: Default Setup.
The trigger determines when the oscilloscope starts to acquire data and to display
a waveform. When a trigger is set up properly, the oscilloscope converts unstable
displays or blank screens into meaningful waveforms.
Triggered waveform
For oscilloscope-specific descriptions, refer to the Operating Basics chapter. (See
page 15, Trigger Controls.) Refer also to the Reference chapter. (See page 96,
Trigger Controls.)
When you push the Run/Stop or Single button to start an acquisition, the
oscilloscope goes through the following steps:
1. Acquires enough data to fill the portion of the waveform record to the left of
the trigger point. This is called the pretrigger.
2. Continues to acquire data while waiting for the trigger condition to occur.
3. Detects the trigger condition.
TDS2000C and TDS1000C-EDU Series Oscilloscope User Manual
Untriggered waveforms