I/O Connector Signal Description - Advantech MIC-1810 User Manual

3.8

I/O Connector Signal Description

The pin assignments for the terminal blocks on the MIC-1810 please refer to Figure
2.1 and 2.2, and Table 3.1 shows its I/O connector signal description.
Table 3.1: I/O Connector Signal Descriptions
Signal Name
AI[15:0]
AGND
ATRG0(AT0)
ATRG1(AT1)
DTRG0(DT0)
DTRG1(DT1)
AI_SCAN(AISC)
AI_CONV(AICV)
AO0_REF(AO0R)
AO1_REF(AO1R)
AO0_OUT(AO0)
AO1_OUT(AO1)
AO_CONV(AOCV) DGND
DI(0~15)
EC
DO(0~7)
Reference Direction
AGND Input
- -
AGND Input
DGND Input
DGND Input
DGND Input
AGND Input
AGND Output
Input
EC Input
--
DGND Output
17
Pin Description
AI Channels 0 to 15. Each channel pair,
AI[i+1:i](i=0,2,4...14), can be configured as
either two single-ended inputs or one differ-
ential input.
Analog Ground. These pins are the refer-
ence points for single-ended measurements
and the bias current return point for differen-
tial measurement. The ground reference
(AGND and DGND) are connected together
on the MIC-1810.
Analog Threshold Trigger. These pins are
the analog input threshold trigger input.
Digital Trigger. These pins are the digital
input.
The left pins are used to start or stop a data
acquisition.
Analog Threshold Trigger and Digital Trig-
ger are used to execute a specific data
acquisition mode – an acquisition which con-
sists of one or more scans. And then a data
acquisition behavior needs a stop trigger sig-
nal while the pin is used to stop function.
The active edge of the start and stop function
could be programmed to be rising or falling.
AI Scan Clock. This pin is used to initiate a
set of data acquisition. The card samples the
AI signals of every channel in the scan list
once for every AI Scan Clock.
AI Conversion Clock. This pin is to initiate a
single AI conversion on a single channel. A
Scan (controlled by the AI Scan Clock) con-
sists of one or more conversions.
AO Channel 0/1 External Reference. This
is the external reference input for the analog
output channel 0/1.
AO Channels 0/1. This pin supplies the volt-
age output of analog output channel 0/1.
AO Convert Clock. This pin is to initiate AO
conversion. Each sample updates the output
of all of the DACs. You can specify an inter-
nal or external source for AO Convert Clock.
Isolated digital input. Refer to signal connec-
tion for the actual connection with ECOM.
Common pin for connecting external signal
and digital input.
Isolated digital output. Refer to signal con-
nection for the actual connection with PC and
DGND.
MIC-1810 User Manual