Juniper Systems Allegro DAQ - Manual (Page 13)

Data Acquisition Expansion Pod 13
Signal
name
Reference Direction Description
PFI
5/AO
SAMP
CLK
D GND Input PFI 5—As an input, this pin is a
PFI.
Output AO Sample Clock Signal—As
an output, this pin is the ao/
SampleClock signal. A high-to-low
edge on AO SAMP indicates that
the AO primary group is being
updated.
PFI
6/AO
START
TRIG
D GND Input PFI 6—As an input, this pin is a
PFI.
Output AO Start Trigger Signal—As
an output, this pin is the ao/
StartTrigger signal. In timed AO
sequences, a low-to-high transition
indicates the initiation of the
waveform generation.
PFI 7/AI
SAMP
CLK
D GND Input PFI 7—As an input, this pin is a
PFI.
Output AI Sample Clock Signal—As
an output, this pin is the ai/
SampleClock signal. This pin
pulses once at the start of each AI
sample in the interval sample. A
low-to-high transition indicates
the start of the sample.
PFI
8/CTR 0
SRC
D GND Input PFI 8—As an input, this pin is a
PFI.
Output Counter 0 Source Signal—As an
output, this pin is the Ctr0Source
signal. This signal reflects the
actual source connected to the
general-purpose counter 0.
PFI
9/CTR 0
GATE
D GND Input PFI 9—As an input, this pin is a
PFI.
Output Counter 0 Gate Signal—As an
output, this pin is the Ctr0Gate
signal. This signal reflects the
actual gate signal connected to the
general-purpose counter 0.