Advantech PC-LabCard PCI-1784 Manuale Utente Scaricare il pdf (Pagina 68)

D.13 Mode O waveform

Hardware-Triggered Strobe with Edge Disarm

Mode O, shown in Figure O, is identical to Mode C except that the

counter will be disarmed while 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

WR

ARM

COMMAND

COUNT

VALUE

TC OUTPUT

TC TOGGLED

OUTPUT

GATE

X

L L-1 L-2 2 1 0 L

Mode O Waveforms

SOURCE

WR

ARM

COMMAND

COUNT

VALUE

TC OUTPUT

TC TOGGLED

OUTPUT

GATE

X L L-1 L-2

N+2 N+1 N

63

1 2 ... 63 64 65 66 67 68 69 70 71

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