JYTEK PCIe-69834, Руководство пользователя

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Operations 25
Table 3-4: Counter Parameters and Description
3.7 Synchronizing Multiple Modules
The PCIe-
69834
provides a dedicated connector as system syn-
chronization interface, enabling multiple module synchronization.
As shown, bi-directional SSI I/Os provides a flexible connection
between modules, allowing one SSI master PCIe-
69834
to output
SSI trigger signals to other slave modules.For more accurate syn-
chronization between modules, or external reference clock should
be applied.
Counter
Name
Length Valid Value Description
ScanIntrv 16-bit 1-65535
Timebase divider to achieve
equivalent sampling rate of the
digitizer, where Sampling rate =
Timebase / ScanIntrv
DataCnt 31-bit 1-2147483647
Specifies the amount of data to
be acquired:
1 - 2147483648 for pre-trig or
mid-trig mode operation
trigDelayTicks 16-bit 1 -65535
Indicates time between a trigger
event and commencement of
acquisition. The unit of a delay
count is the period of the
Timebase.
ReTrgCnt 31-bit 1-2147483647
Enables re-trigger to accept
multiple triggers.
1 - 2147483647 for normal
operation
See Section 3.4.5: Acquisition
with Re-Triggering