Acquisition
31
Note:
–
acquisition time = sample points x sample interval", setting a larger memory depth can achieve a higher sample
rate for a given time base, but more samples require more processing time, degrading the waveform update rate.
With 200 Mpts memory depth, the 2560B series can still run at full sample rate (2 GSa/s) even when set to the
10 ms/div timebase.
The memory depth here is the upper limit of the memory space allocated by the oscilloscope. The actual sample
points are related to the current timebase and may be less than memory depth. The actual sample points
information can be obtained in the timebase descriptor box (see the section "Timebase and Trigger" for details).
The maximum memory depth in single-channel mode is 2 times that of the dual-channel mode, as the following table:
Single-Channel Mode
Dual-Channel Mode
20k
10k
200k
100k
2M
1M
20M
10M
200M
100M
Table 4.1
Memory Depth
Single-channel mode (interleaving mode): Only one of C1/C2 is turned on, and only one of C3/C4 is turned on.
Dual-channel mode (non-interleaving mode): Both C1/C2 are turned on, or both C3/C4 are turned on.
Figure 4.2
Memory Depth
