NI USB-5132/5133 Onboard Memory
The total number of samples that can be stored depends on the acquisition memory size option. Refer to the hardware specifications document for information about the memory options available for each device.
Triggering and Memory Usage
During an acquisition, samples are stored in a circular buffer that is continually rewritten until a trigger is received. After the trigger is received, the NI 5133/5132 continues to acquire posttrigger samples if you have specified a posttrigger sample count. The acquired samples are placed into onboard memory. The number of posttrigger or pretrigger samples is only limited by the amount of onboard memory.
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Note To specify the posttrigger sample count, use the Reference Position property or the NISCOPE_ATTR_REF_POSITION attribute. This property/attribute specifies what percentage of the record should be pretrigger samples. |