ADC streaming configuration
The ADC configuration section allows the user to set the parameters for the data acquisition process. The settings depend on the selected Mode (Network or Local).
Configuration modes
The user can set:
IP address - The IP address of the Red Pitaya board.
Rate - The sampling frequency (rate). Should be calculated from the selected settings and the data streaming limitation.
Resolution - Input channel resolution (8 or 16 bits). Determines the number of Bytes per sample (1 or 2).
Use calibration - Select whether the input calibration should be used or not.
Type of file saved - Select the file format for the saved data. The following formats are supported:
WAV (standard audio file format) (maximum WAV file size is 4 GB),
TDMS (Technical Data Management Streaming file format),
BIN (Fast and compact binary format). It can be converted to CSV format using the convert_tool application.
Save capture time - Select whether to save the capture time in the file name or not. The capture time is saved in the format: YYYY-MM-DD HH:MM:SS. This option also saves the capture time of individual samples (works for all format types).
Input channels - Select the input channels to be used for data acquisition by turning on the corresponding switches. The following options are available:
Channel 1 (CH1),
Channel 2 (CH2),
Channel 3 (CH3) - STEMlab 125-14 4-Input only,
Channel 4 (CH4) - STEMlab 125-14 4-Input only.
Input attenuation - For each channel select the input attenuation mode. The following options are available:
1:20 - HV (high voltage mode),
1:1 - LV (low voltage mode).
The Save mode setting is specified on the remote client side.
Note
Older OS versions also include the Port setting, where the user can specify the network port number for the data streaming. The port numbers are now fixed. See the Configuration information section for more details.
The user can set:
Samples - Number of samples to be acquired (ALL for unlimited sampling)
Rate - The sampling frequency (rate). Should be calculated from the selected settings and the data streaming limitation.
Resolution - Input channel resolution (8 or 16 bits). Determines the number of Bytes per sample (1 or 2).
Use calibration - Select whether the input calibration should be used or not.
Type of file saved - Select the file format for the saved data. The following formats are supported:
WAV (standard audio file format) (maximum WAV file size is 4 GB),
TDMS (Technical Data Management Streaming file format),
BIN (Fast and compact binary format). It can be converted to CSV format using the convert_tool application.
Save capture time - Select whether to save the capture time in the file name or not. The capture time is saved in the format: YYYY-MM-DD HH:MM:SS. This option also saves the capture time of individual samples (works for all format types).
Save mode: Select the save mode for the data. The following modes are supported:
RAW (raw data in ADC counts),
VOLTS (data converted to Volts).
Input channels: Select the input channels to be used for data acquisition by turning on the corresponding switches. The following options are available:
Channel 1 (CH1),
Channel 2 (CH2),
Channel 3 (CH3) - STEMlab 125-14 4-Input only,
Channel 4 (CH4) - STEMlab 125-14 4-Input only.
Input attenuation: For each channel select the input attenuation mode. The following options are available:
1:20 - HV (high voltage mode),
1:1 - LV (low voltage mode).
File formats
The following file formats are supported for ADC streaming:
WAV (Wave Audio File Format) - Standard audio file format with a maximum file size of 4 GB. Compatible with most audio processing software.
TDMS (Technical Data Management Streaming) - National Instruments file format designed for high-speed data acquisition and logging.
BIN (Binary) - Fast and compact binary format. Can be converted to CSV format using the convert_tool application.
Timestamps
The Save capture time option allows the user to include the capture time in the file name and save the capture time of individual samples. The capture time is saved in the format: YYYY-MM-DD HH:MM:SS. This feature is useful for correlating data with specific events or for post-processing analysis. The timestamp information is collected from the timestamp register in the FPGA, the exact resolution depends on the core clock of the FPGA, but is typically in the order of nanoseconds.
Save modes
When streaming data locally, you can select the save mode:
RAW - Saves raw data in ADC counts (native format from the ADC).
VOLTS - Converts and saves data in Volts based on the attenuation settings.
Note
RAW mode is more compact and faster to save, while VOLTS mode is more user-friendly for analysis. The choice depends on your specific use case and post-processing requirements. Both mode automatically include the calibration if the “Use calibration” option is selected.
Channel configuration
Input channels
Select which input channels to use for data acquisition:
CH1 - Always available
CH2 - Always available
CH3 - STEMlab 125-14 4-Input only
CH4 - STEMlab 125-14 4-Input only
Note
More active channels will reduce the maximum sampling rate due to increased data throughput. See Data Streaming Limitations for details.
Input attenuation
For each active channel, select the input attenuation mode:
1:1 - LV (Low Voltage mode): ±1V input range
1:20 - HV (High Voltage mode): ±20V input range
The attenuation setting affects the input range and sensitivity of each channel.
Next steps
Configure DAC streaming if you need signal generation
Set up Memory configuration to optimize performance
Learn about Data Streaming Limitations to calculate maximum sampling rates