Measurement Computing ADAC-LVi - Manual (Page 137)

Chapter 2 Clock Config Library
ADAC LabVIEW VI 131
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Clock Rate Units Clock Rate Units is a numeric value that specifies base units
in which the Clock Rate parameter is specified. The available options are:
0:HERTZ Rate is specified in units of hertz (samples per second)
1:TICS Rate is the divisor programmed to the on-board clocking source.
2:MSECONDS Miliseconds, supported by the 4012AD and 4112AD series in
the Windows 95/98 environment only. The 4012 or 4112 series can be set to
either HERTZ or MSECONDS only.
If TICS is chosen, the Clock Rate parameter is used to specify the divisor to the
on-board CLK input source. The on-board clock source is typically an 8254
device that has a 1,000,000 CLK input source. The 1,000,000 source is divided
from 2 to 65525 to set actual A/D clocking rate.
For boards that use 2 on-board clocks concatenated together, the divisor broken
into two 16 bit WORDS. The high word divides the first CLK that feeds the
second CLK that is further divided by the low word.
Clock Rate Clock Rate is a double value that represent the current rate at which
clocks occur.
error out Error out contains error information. If the error in cluster indicated an error,
the error out cluster contains the same information. Otherwise, error out describes the
error status of this VI.