High-speed Multifunction Boards
User Manual, Ver. 1.0, May 2015, PMH-029-10 Page 23
2.8.2
I/O Connector Signal Descriptions
Signal Name
Reference
Direction
Description
AI<0..15>
AGND
Input
Analog Input channels 0 to 15.
For single-ended
measurements, each signal is an Analog Input voltage
channel.
A_GND
-
-
Analog Input/Output Ground.
These terminals are
reference point for single-ended AI measurements and
AO<0..1>.
AO<0..1>
AGND
Output
Analog Output channels 0 to 1.
These terminals supply
the voltage output of AO channels 0 to 3.
DO<0..11>
DGND
Output
Digital Output channels.
DI<0..11>
DGND
Input
Digital Input channels.
D_GND
-
-
Digital Ground
CNT0_CLK
D_GND
Input
Clock Input for Counter0, which can be either an
external or an internal source, as set using software.
CNT0_OUT
D_GND
Output
Counter0 Output.
CNT0_GATE
D_GND
Input
Counter0 Gate Control.
AI_CONV
D_GND
Input
AD External Clock Trigger.
DTRG0
D_GND
Input
AD external trigger.(Only support post trigger)
+12 V
D_GND
Output
+12 V
DC
Power Source.
These terminals provide a fused
+12 V power source. Refer to Power Source section for
more information.
+5 V
D_GND
Output
+5 V
DC
Power Source.
These terminals provide a fused
+5 V power source. Refer to Power Source section for
more information.
2.8.3
Power Source
The +5 V terminals on the I/O connector 5 V referenced to DGND. Use these terminals to
power external circuitry.
Caution:
Never connect the +5/+12 V power terminals to analog or digital ground or to any other voltage source on
PCIe-8622 or any other device. Doing so can damage the device and the computer. ICP DAS is not liable for
damage resulting from such a connection.