Sample Control
31
Figure 5.4
Bandwidth Limiting
In practice, an oscilloscope’s sample rate should be four or more times its bandwidth:
𝑓
𝑠
= 4𝑥𝑓
𝐵𝑊
. Doing so causes less
aliasing, and aliased frequency components have a great amount of attenuation.
5.5 Memory Depth
Memory Depth
refers to the number of waveform points that the oscilloscope can store in a single trigger sample. It
reflects the storage ability of the sample memory.
To set the
Memory Depth
:
1. Press the Acquire key.
2. Use the softkeys to select
Mem Depth
(Page 1/2).
3. Turn the
Universal Knob
to navigate the available option.
4. Push the
Universal Knob
to set the selected option.
The actual memory depth is displayed in the information area at the upper right corner of the screen.
Single Channel
Mode
Dual Channel
Mode
Three or Four
Channel Mode
14 k
7 k
3.5 k
140 k
70 k
35 k
1.4 M
700 k
350 k
14 M
7 M
3.5 M
Table 5.1
Maximum Storage Depth
