Acquisition EN Figure 11.3 Schematic diagram of storage depth The relationship between storage depth, sampling rate and horizontal base gear is as follows: MDepth = SRate * TSCale * HDivs ⚫ MDepth: storage depth, in unit pts. ⚫ SRate: sampling rate, in unit Sa/s. ⚫ TSCale: horizontal time base gear, in unit s/div. ⚫ HDivs: the number of grids in horizontal direction, in unit div. Therefore, at the same horizontal time base gear, high storage depth can ensure high sampling rate. Click Auxiliary > Acquisition to open the acquisition menu. Select a storage depth. The default storage depth is 4K. Click the storage depth or down arrow to select another storage depth. Optional storage depth:
4K, 20K, 200K, 2M, 4M, or 8M. In single-channel mode, the maximum storage depth is 8M. In double-channel mode, the maximum storage depth is 4M. In triple or quadruple-channel mode, the maximum storage depth is 2M. Tip: Under sAutomatic mode, the oscilloscope automatically selects the storage depth based on the current sampling rate. 11.5 Interpolation methods Under real - time sampling, oscilloscope obtains discrete samples of the displayed waveform. In general, waveforms displayed by dots are difficult to observe. In order to increase the visibility of the signal, the digital oscilloscope usually adopts interpolation display mode.
Interpolation is a method of connecting sample points and calculating the whole wave form from some points. For real-time sampling using interpolation, even if the oscilloscope only collects a few sampling points, interpolation can be used to fill the gaps between points and reconstruct accurate waveforms. Interpolation methods include sine wave interpolation, step interpolation and linear interpolation. Tablet1000 User manua l Copyright © Qingdao Hantek Electronics Co., LTD 56