Chapter 9
Digital Routing and Clock Generation
©
National Instruments
9-7
X Series User Manual
•
FREQ OUT
•
PFI <0..5>
Note
Signals with a
*
are inverted before being driven on the RTSI terminals.
Using RTSI Terminals as Timing Input Signals
Yo
u
can
u
se RTSI terminals to ro
u
te external timing signals to many
different X Series f
u
nctions. Each RTSI terminal can be ro
u
ted to any of
the following signals:
•
AI Convert Clock (ai/ConvertClock)
•
AI Sample Clock (ai/SampleClock)
•
AI Start Trigger (ai/StartTrigger)
•
AI Reference Trigger (ai/ReferenceTrigger)
•
AI Pa
u
se Trigger (ai/Pa
u
seTrigger)
•
AI Sample Clock Timebase (ai/SampleClockTimebase)
•
AO Start Trigger (ao/StartTrigger)
•
AO Sample Clock (ao/SampleClock)
•
AO Sample Clock Timebase (ao/SampleClockTimebase)
•
AO Pa
u
se Trigger (ao/Pa
u
seTrigger)
•
Co
u
nter inp
u
t signals for all co
u
nters—So
u
rce, Gate, A
u
x, HW_Arm,
A, B, or Z
•
DI Sample Clock (di/SampleClock)
•
DI Start Trigger (di/StartTrigger)
•
DI Pa
u
se Trigger (di/Pa
u
seTrigger)
•
DI Reference Trigger (di/ReferenceTrigger)
•
DO Sample Clock (do/SampleClock)
•
DO Sample Clock Timebase (do/SampleClockTimebase)
Most f
u
nctions allow yo
u
to config
u
re the polarity of RTSI inp
u
ts and
whether the inp
u
t is edge or level sensitive.
RTSI Filters
Yo
u
can enable a programmable debo
u
ncing filter on each PFI, RTSI, or
PXI_STAR signal. Refer to the
PFI Filters
section of Chapter 8,
PFI
, for
more information.
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