Chapter 2
NI 5450 Overview
NI PXIe-5450 User Manual
2-36
ni.com
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External Sample clock timebase—the Sample clock timebase has an
external source that derives device clocking by directly driving the
DAC and all waveform generation operations on the device.
The following table shows the valid NI-FGEN property or attribute value
combinations that can be used to configure the clock settings for an internal
Sample clock, an external Sample clock, or a Reference clock. The term
Update clock
is synonymous with
Sample clock
.
Sample Clock
Source
*
Clock Mode
*
PLL Reference
Clock Source
*
“OnboardClk”
(default)
NIFGEN_VAL_HIGH_
RESOLUTION
“None” (default)
“PXI_CLK10”
“ClkIn”
NIFGEN_VAL_
AUTOMATIC
(default)
“None” (default)
“PXI_CLK10”
“ClkIn”
“ClkIn”
Not Applicable
Not Applicable
* These column headings refer to NI-FGEN properties. The attributes that correspond to
these properties are
NIFGEN_ATTR_SAMPLE_CLOCK_SOURCE
,
NIFGEN_ATTR_CLOCK_MODE
, and
NIFGEN_ATTR_REFERENCE_CLOCK_SOURCE
. The
values in the columns represent the values that can be set on these properties or attributes.
Settings that line up horizontally show valid combinations of the NI-FGEN settings.