Acqiris U5309A User Manual page 31

RisingDelta: defines the amount by which two consecutive samples must differ to be considered
as rising edge in the peak detection algorithm.
FallingDelta: defines the amount by which two consecutive samples must differ to be considered
as falling edge in the peak detection algorithm.
Timing sequence
The minimum time between summed events depends on the trigger Rearm Time as specified in the
U5309A datasheet.
Figure 2.7 - Timing sequence in PKD mode
Current solution supports a single sequence mode.
The number of potential trigger lost depends on several factors:
The time needed to perform the last accumulation PKDDead Time, which depends on the num-
ber of samples acquired (For instance, PKD Dead Time is 2.189 ms for an acquisition of 480
ksamples),
The time to read the previous PKD acquisition sequence, depending on the number of samples
to transfer and mainly on the PCIe connection.
The time to initiate the next acquisition.
Post trigger delay
The post trigger delay step depends on sampling rate and channel options, it can be summarized as
follow:
U5309A
-SR2
-SR1
-SR0
Table 2.5 - Post-trigger delay granularity.
Multi-purpose inputs and outputs (IO 1, 2)
The multi-purpose inputs and outputs (IO 1, 2) in the front panel may be used to control the
accumulation or read the ADC card status:
U5309A User's Manual
-CH1 -CH2
multiple of 16 ns
multiple of 32 ns
multiple of 64 ns
Not supported
multiple of 16 ns
multiple of 32 ns
2.5 Peak Detection (PKD)
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