Advantech MIC-3716, Manual

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35
I/O Connector Signal Description
Table 3-1: I/O Connector Signal Description
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.
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 analog output voltages are
referenced to these nodes. The three ground references
(AIGND, AOGND, and DGND) are connected together.
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. The three ground references (AIGND, AOGND, and
DGND) are connected together.
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
the 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, you can use this signal as a synchronous
signal for other applications. A low- to- high edge triggers
the 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 an 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.