Tektronix THS3014, User Manual

Page: 54 / 130

Operating Basics
Suppress High Frequency
Noise
Turning glitch detect off will suppress the high frequency noise on a waveform.
Averaging will suppress the noise even more:
1. Open the ACQUIRE OPTIONS menu.
2. Select Glitch Off .
3. Select Average On to open the Average menu
4. Select Average 8 .
You can read more about averaging and how to use it. (See page 35, Smooth
a Waveform With Averaging .)
NOTE.
Glitch capture and average do not affect bandwidth. Further noise
suppression is possible with bandwidth limiting fi lters. (See page 40, Adjust
Bandwidth to Smooth Waveforms.)
Acquire Waveforms
Before the instrument can display a signal, the signal must pass through the input
channel where it is scaled and digitized. Each channel has a dedicated input
ampli
fi er and digitizer. Each channel produces a stream of digital data from
which the instrument extracts waveform records. You can set a variety of signal
acquisition parameters as described in this section.
Set Acquisition Speed and
Waveform Memory Depth
To set the acquisition speed, do the following:
1. Press the Acquire button.
2. Select ACQUIRE OPTIONS .
3. Set the Memory to one of the following:
Short: For faster trace update rate; shortest record length, decreased zoom
rate.
Long: Maximum waveform detail; 10,000 samples per trace record length,
maximum zoom rate, lower trace update rate.
38 THS3000 Series Oscilloscopes User Manual