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SDS6000L User Manual
78 i n t . s i g l e n t . c o m
Interpolation can significantly reduce this kind of error. Below is the same signal with an identical
sample rate but followed by the 2x interpolation technique. From this figure, we can see points inserted
between the raw data in the top/base area are closer to the real top/base of the analog input, which
reduces the error.
Error on vertical measurement after 2x interpolation
Higher ERES bandwidth
High-resolution acquisition in the SDS6000L enhances the vertical resolution but doing so results in a
decrease in the available bandwidth. The higher the resolution, the lower the bandwidth. The bandwidth
as a function of resolution and sample rate is shown in the table below:
Table: Bandwidth specifications of the SDS6000L in ERES acquisition mode
Bandwidth in
ERES mode
(typical)
0.5-bit: 0.25*Sample rate, up to the analog bandwidth
1-bit: 0.115*Sample rate, up to 1.15 GHz, limited by the analog bandwidth
1.5-bit: 0.055*Sample rate, up to 550 MHz, limited by the analog bandwidth
2-bit: 0.028*Sample rate, up to 280 MHz
2.5-bit: 0.014*Sample rate, up to 140 MHz
3-bit: 0.007*Sample rate, up to 70 MHz
3.5-bit: 0.0035*Sample rate, up to 35 MHz
4-bit: 0.0017*Sample rate, up to 17 MHz
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