App-1
IM DLM5058-03EN
Appendix
App
Appendix
Appendix 1 Relationship between the Time Scale,
Sample Rate, and Record Length
The sample rate is determined by the time scale and record length settings.
Sample rate = Record length/(time scale [s/div] × 10 [div])
To change the sample rate, change the time scale or set record length.
Changing the Sample Rate after Setting the Time Scale
Change the set record length to change the sample rate.
Example: To measure at a sample rate of 1.25 GS/s using a 10 μs/div time scale
1.
Set the time scale to 10 μs/div.
2.
Press ACQUIRE to display the ACQUIRE menu.
3.
Press the Record Length soft key, and from the menu that appears, select 125 kPoints.
The sample rate shown on the screen changes to 1.25 GS/s.
On the table under “When the Set Record Length Is 125 kpoint,” provided later, you can confirm that the
sample rate is 1.25 GS/s when the time scale (Time/div) is set to 10 μs/div.
Note
For the relationship between the sample rate and time scale for each set record length, see the following
pages.
Changing the Sample Rate after Setting the Set Record Length
Turn the TIME/DIV knob to change the time scale, which also changes the sample rate.
Example: To measure at a sample rate of 12.5 MS/s using a set record length of 1.25 kPoints
1.
Change the set record length to 1.25 kPoints.
2.
On the table under “When the Set Record Length Is 1.25 kpoint” on the next page, confirm
that the time scale (Time/div) is 10 μs/div when the sample rate is set to 12.5 MS/s.
3.
Turn the TIME/DIV knob to change the time scale to 10 µs/div.
The sample rate shown on the screen changes to 12.5 MS/s.
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