Advantech PCI-1710 Manual de usuario Pagina 25

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 64
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 24
Chapter 3 Signal Connections 21
card. With this connection, the PGIA rejects a common-mode voltage
V
cm
between the signal source and the PCI-1710/1710HG ground,
shown as V
cm
in Figure 3-3.
Figure 3-3: Differential input channel connection - ground reference signal source
If a floating signal source is connected to the differential input
channel, the signal source may exceed the common-mode signal range
of the PGIA, and the PGIA will be saturated with erroneous voltage-
readings. You must therefore reference the signal source to the
AIGND.
Figure 3-4 shows a differential channel connection between a floating
signal source and an input channel on the PCI-1710/1710HG card. In
this figure, each side of the floating signal source is connected
through a resistor to the AIGND. This connection can reject the
common-mode voltage between the signal source and the PCI-1710/
1710HG card ground.
ExternalInternal
Vista de pagina 24
1 2 ... 20 21 22 23 24 25 26 27 28 29 30 ... 63 64

Comentarios a estos manuales

Sin comentarios