Advantech PCI-1711U Series, Руководство пользователя

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PCI-1711U Series User Manual 24
3.3.2 Analog Input Connections
PCI-1711U/UL supports 16 single-ended analog inputs.
Single-ended Channel Connections
Single-ended connections use only one signal wire per channel. The volt-
age on the line references to the common ground on the card. A signal
source without a local ground is called a "floating" source. It is fairly sim-
ple to connect a single ended channel to a floating signal source. A stan-
dard wiring diagram looks like this:
TRG_GATE DGND Input A/D External Trigger Gate. When TRG
_GATE is connected to +5 V, it will
enable the external trigger signal to
input. When TRG _GATE is connected
to DGND, it will disable the external
trigger signal to input.
EXT_TRG DGND Input A/D External Trigger. This pin is exter-
nal trigger signal input for the A/D con-
version. A low -to-high edge triggers
A/D conversion to start.
+12V DGND Output +12 VDC Source.
+5V DGND Output +5 VDC Source.
Table 3.2: I/O Connector Signal Descriptions
Signal Input
+
Vs
-
A.GND A.GND
A.GND
To A/D