Raw-mode readout
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Revision as of 13:14, 23 April 2008 by 142.103.235.227 (talk)
Summary
Raw data refers to 50MHz ADC samples. The memory available in MCE to store such data is 8192x8 bits. Hence, the 14-bit ADC samples are reported in signed 8b format pre-scaled by 26.
Raw data acquisition is only available in certain build of readout-card firmware. The latest firmware to support raw mode is: xxxx
Setup
There are two commands used for setting up the raw data acquisition:
captr_raw Capture a snapshot of row_len samples of num_rows rows for 2 frames up to 8192 entries and stores them in MCE memory for readout in raw mode.
data_mode determines the pixel-data readout mode. data mode has to be set to 3 for raw mode.
A typical sequence of commands for data acquisition is:
wb cc ret_dat_s 1 1 wb rc1 data_mode 3 wb rc1 captr_raw 1 acq_config filename rc1 acq_go row_len
