Advantech PCI-1710HGU, Руководство пользователя

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23 Chapter 3
3.3.1 I/O Connector Signal Description
Table 3.2: I/O Connector Signal Descriptions
Signal Name Reference Direction Description
AI<0…15> AIGND Input Analog Input Channels 0 through 15.
Each channel pair, AI<i, i+1> (i = 0, 2,
4...14), can be configured as either two
single-ended inputs or one differential
input.
AIGND - - Analog Input Ground. The three
ground references (AIGND, AOGND,
and DGND) are connected together on
the PCI-1710U/1710HGU/1710UL.
AO0_REF
AO1_REF AOGND Input Analog Output Channel 0/1 External
Reference.
AO0_OUT
AO1_OUT AOGND Output Analog Output Channels 0/1.
AOGND - - Analog Output Ground. The three
ground references (AIGND, AOGND,
and DGND) are connected together on
the PCI-1710U/1710HGU/1710UL.
DI<0..15> DGND Input Digital Input Channels 0 through 15.
DO<0..15> DGND Output Digital Output Channels 0 through 15.
DGND - - Digital Ground. This pin supplies the
reference for the digital channels at the
I/O connector as well as the +5VDC
and +12 VDC supply. The three ground
references (AIGND, AOGND, and
DGND) are connected together on the
PCI-1710U/1710HGU/1710UL card.
CNT0_CLK DGND Input Max. Input Frequency: 10 MHz
CNT0_OUT DGND Output Counter 0 Output.
CNT0_GATE DGND Input Counter 0 Gate Control.
PACER_OUT DGND Output Pacer Clock Output. This pin pulses
once for each pacer clock when turned
on. If A/D conversion is in the pacer
trigger mode, users can use this signal
as a synchronous signal for other
applications. A low-to-high edge trig-
gers A/D conversion to start.