Chapter 5
Signal Connections
©
National Instruments Corporation
5-15
NI PCI-7342 Hardware User Manual
Wiring Concerns
For proper use of each ADC input channel, connect the analog signal to be
measured to the channel input, and connect its ground reference to the
Analog Input Ground.
Note
The analog reference output is an output signal only and must not connect to an
external reference voltage. Connect the common of the external reference to the Analog
Input Ground pin for proper A/D reference and improved voltage measurement.
Other Motion I/O Connection
The PCI-7342 controller provides the following other motion I/O
connection:
•
Host +5 V
—This signal is the in5 V supply of the host
computer. The typical uses of this signal are to detect when the host
computer is powered on and to shut down external motion system
components when the host computer is turned off or disconnected from
the motion accessory.
Caution
The host +5 V signal is limited to <100 mA. Do
not
use this signal to power any
external devices, except those intended in the host bus monitor circuits on the UMI and
drive products.
