ADLINK PCIe-9852 - Manual (Page 34)

24 Operations
in width, therefore the lowest sampling rate is 3.051KS/s (200MS/s
/ 65535).
Figure 3-13: Varying Sampling Rates by Adjusting Scan Interval Counter
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 28-bit 1-268435452 Specifies the amount of data to
be acquired:
X 1 - 268435452 for pre-
trig or mid-trig mode
operation
X 1 - 268435452 for Data
Average mode for 1
channel
X 1 - 134217724 for Data
Average mode for 2
channel
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.
TIMEBASE
DATA
D1
Acquisition
In Progress
Trigger
Acquisition is initiated following this clock edge
D1
ScanIntrv = 1
D2 D3 D4 D5 D6 D7 D8 D9 D10
D2 D3 D4 D5 D6
D1 D2 D3 D4
ScanIntrv = 2
ScanIntrv = 3