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Table 2-2. I/O Connector Signal Descriptions (Continued)
I/O Connector
Pin
CTR 1 OUT
PFI 5/AO
SAMP CLK
PFI 6/AO START
TRIG
PFI 7
PFI 8/CTR 0
SOURCE
Reference
Direction
D GND
Output
D GND
Input
Output
D GND
Input
Output
D GND
Input
D GND
Input
Output
TitleShort-Hidden (cross reference text)
Signal Description
Counter 1 Output Signal—This pin
emits the Ctr1InternalOutput signal. For
more information, refer to Chapter 5,
Counters.
PFI 5—As an input, this pin is a
general-purpose input terminal.
AO Sample Clock Signal—As an output,
this pin emits the ao/SampleClock signal.
A high-to-low transition of this signal
indicates a new sample is being generated.
For more information, refer to Chapter 3,
Analog
Output.
PFI 6—As an input, this pin is a
general-purpose input terminal. This is the
default input for the ao/StartTrigger signal.
AO Start Trigger Signal—As an output,
this pin emits the ao/StartTrigger signal. A
low-to-high transition of this signal
indicates the start of a generation. For
more information, refer to Chapter 3,
Analog
Output.
PFI 7—As an input, this pin is a
general-purpose input terminal.
PFI 8—As an input, this pin is a
general-purpose input terminal and can
also be used to route signals directly to the
RTSI bus. This is the default input for the
Ctr0Source signal.
Counter 0 Source Signal—As an output,
this pin emits the Ctr0Source signal. This
signal reflects the actual source signal
connected to Counter 0. For more
information, refer to Chapter 5, Counters.
© National Instruments | 2-9
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