NI USB-9263, Руководство пользователя

Страница: 8 / 14

NI USB-9263 User Guide and Specifications 8 ni.com
Connecting a Load to the NI USB-9263
Connect the positive lead of the load to the AO terminal. Connect the
ground of the load to a COM terminal.
Figure 8. Connecting a Load to the NI USB-9263
NI USB-9263 Circuitry
The NI USB-9263 channels share a common ground that is isolated
from the other modules in the system. Each channel has a digital-to-analog
converter (DAC) that produces a voltage signal. By default, NI-DAQmx
software allows you to write scaled values to the analog output channels.
Refer to your software documentation for more information.
Each channel also has overvoltage and short-circuit protection. For more
information about the overvoltage and short-circuit protection, refer to the
Specifications section.
Figure 9. Output Circuitry for One Channel
When the module powers on, the output channel drives the power-on
voltage. Refer to the
Specifications section for more information about
power-on voltage. Refer to your software documentation for information
about configuring initial output values in software.
NI USB-9263
COM
AO
Load
AO
COM
NI USB-9263
Amplifier
Isolated DAC
Overvoltage/
Short-Circuit
Protection