The data capture capabilities of Moku instruments are greatly enhanced with deep memory mode. By extending memory depth and supporting higher sampling rates, this feature allows users to record high-resolution datasets and export them directly through the Export Data menu.

The deep-memory acquisition is available in the Oscilloscope and all Moku instruments that have an embedded oscilloscope, including the Lock-in Amplifier (LIA), PID controller (PID), Digital Filter Box (DFB), FIR Filter Builder (FIR), and Laser Lock Box (LLB). Note that deep memory acquisition is only available in standalone Oscilloscope and embedded oscilloscopes when the corresponding instruments are running in standalone mode. It is not supported in Multi-instrument Mode.

When deep memory acquisition is performed through probe points in embedded oscilloscopes (such as in LIA, PID, DFB, FIR, or LLB), the achievable sampling rate depends on the host instrument’s internal sampling rate. This means the deep memory sampling rate will generally be lower than the maximum ADC sampling rate.

Table 1 summarizes the number of acquired data points available at different sampling rates when using deep memory mode in the Oscilloscope. 

Deep memory acquisition in Moku app

Deep memory mode can be activated under the tab ‘Timebase’, as shown in the screenshot below. To save data, simply click the cloud icon located at the top center of the window. Then toggle the ‘High-res data’ option, select a desired data format, and click ‘Export’.

Data acquisition using APIs

Examples of saving data in the Oscilloscope deep memory mode using MATLAB and Python APIs are available on GitHub. Users are welcome to use these as a starting point to create their own scripts:

MATLAB: https://github.com/liquidinstruments/moku-examples/blob/main/matlab-api/oscilloscope_deep_memory_mode.matlab

Python: https://github.com/liquidinstruments/moku-examples/blob/main/python-api/oscilloscope_deep_memory_mode.py