Ao Sample Clock; Polarity And Reference Selection; Reference Selection - National Instruments PXI-6070E User Manual

Chapter 3 Analog Output

AO Sample Clock

Polarity and Reference Selection

AO Range
±10 V
0–10 V
±EXT REF
0–EXT REF
Note Not all E Series devices have every polarity and reference select option. For
example, devices such as the NI 6013/6014 and NI 6015/6016 are bipolar only with an
internal reference. Refer to the specifications document for your device for more
information about range-setting options.

Reference Selection

E Series User Manual
The DAC reads a sample from the FIFO with every cycle of the AO Sample
Clock signal and generates the AO voltage.
Polarity and reference selection allow you to set the AO range. Refer to
Table 3-1 to set the range for your device. Refer to the
and the Reference Selection sections for more information.
Table 3-1. Polarity and Reference Range
Polarity Select
Bipolar
Unipolar
Bipolar
Unipolar
To generate the AO External Reference signal, drive an analog voltage on
the AO EXT REF pin.
(NI 6020E, NI PXI-6040E, NI 6052E, NI 6062E, NI 6070E/6071E, and
PCI-MIO-16E-4 Devices Only)
internal reference of 10 V or to the external reference signal connected to
the external reference (AO EXT REF) pin on the I/O connector. This signal
applied to EXT REF should be within ±11 V. You do not need to configure
both channels for the same mode.
Internal
Internal
AO External Reference Signal
AO External Reference Signal
You can connect each DAC to the device
3-2
Polarity Selection
Reference Select
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