Juniper-systems Allegro DAQ Manual do Utilizador descarregar pdf (Página 12)

12 User’s Guide

Signal

name

Reference Direction Description

PFI 1/AI

REF

TRIG

D GND Input PFI 1—As an input, this pin is a

PFI.

Output AI Reference Trigger Signal—As

an output, this pin is the ai/

ReferenceTrigger signal. In

pretrigger applications, a low-

to-high transition indicates the

initiation of the posttrigger

conversions. AI REF TRIG is not

used in posttrigger applications.

PFI 2/AI

CONV

CLK

D GND Input PFI 2—As an input, this pin is a

PFI.

Output AI Convert Clock Signal—As

an output, this pin is the ai/

ConvertClock signal. A high-to-

low edge on AI CONV indicates

that an A/D conversion is

occurring.

PFI

3/CTR 1

SRC

D GND Input PFI 3—As an input, this pin is a

PFI.

Output Counter 1 Source Signal—As an

output, this pin is the Ctr1Source

signal. This signal reﬂects the

actual source connected to the

general-purpose counter 1.

PFI

4/CTR 1

GATE

D GND Input PFI 4—As an input, this pin is a

PFI.

Output Counter 1 Gate Signal—As an

output, this pin is the Ctr1Gate

signal. This signal reﬂects the

actual gate signal connected to the

general-purpose counter 1.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 27 28

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