Advantech PC-LabCard PCI-1784 Manual do Utilizador descarregar pdf (Página 70)

D.15 Mode U waveform

Hardware-Triggered Delayed Pulse Strobe with Edge Disarm

Mode U is identical to Mode I except that the counter will be disarmed

while the Gate an inactive-going Gate edge is applied to the counter.

And the counter will hold the count value until it is issued a LOAD

command or REST command.

SOURCE

COUNT

VALUE

TC OUTPUT

TC TOGGLED

OUTPUT

GATE

L-1 L-2 2 0

Mode U Waveforms

X L 1 H

ARM

COMMAND

H-1 H-2 2 01 L

SOURCE

COUNT

VALUE

TC OUTPUT

TC TOGGLED

OUTPUT

GATE

L-1 L-2 2 0X L 1 H

ARM

COMMAND

H-1 H-2 N+2 NN+1

SOURCE

COUNT

VALUE

TC OUTPUT

TC TOGGLED

OUTPUT

GATE

L-1 L-2 N+2 NX L N+1

ARM

COMMAND

1 2 ... 65 66 67 68 69 70 71

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Advantech PC-LabCard PCI-1784 Manual do Utilizador Página 70