Chapter 3
– 21 –
PCI-1711/1731 User’s Manual
Advantech Co., Ltd.
www.advantech.com
Signal Name
Reference
Direction
Description
AI<0…15>
AIGND
Input
Analog Input Channels 0 through 15.
AIGND
-
-
Analog Input Ground.
DA0_REF
DA1_REF
AOGND
Input
Analog Output Channel 0/1 External Reference.
DA0_OUT
DA1_OUT
AOGND
Output
Analog Output Channels 0/1.
AOGND
-
-
Analog Output Ground. The analog output voltages are
referenced to these nodes.
DI<0..15>
DGND
Input
Digital Input channels.
DO<0..15>
DGND
Output
Digital Output channels.
DGND
-
-
Digital Ground. This pin supplies the reference for the
digital channels at the I/O connector as well as the +5VDC
supply.
CNT0_ CLK
DGND
Input
Counter 0 Clock Input. The clock input of counter 0 can
be either external (up to 10 MHz) or internal (1 MHz), as
set by software.
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 triggers
A/D conversion to start.
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 external trigger signal
input for the A/D conversion. A low-to-high edge triggers
A/D conversion to start.
+12V
DGND
Output
+12 VDC Source.
+5V
DGND
Output
+5 VDC Source.
I/O Connector Signal Description
Table 3-1 I/O Connector Signal Description
