National Instruments 3.21E+04 Manual De Usuario

Chapter 4     Signal Connections

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 National Instruments Corporation

4-27

AT-MIO/AI E Series User Manual

The analog output signals are DAC0OUT, DAC1OUT, EXTREF, and 
AOGND. DAC0OUT and DAC1OUT are not available on the 
AT-AI-16XE-10.  EXTREF is not available on the AT-MIO-16XE-10, 
AT-AI-16XE-10, or AT-MIO-16XE-50.

DAC0OUT is the voltage output signal for analog output channel 0.  
DAC1OUT is the voltage output signal for analog output channel 1. 

EXTREF is the external reference input for both analog output 
channels.  You must configure each analog output channel individually 
for external reference selection in order for the signal applied at the 
external reference input to be used by that channel.  If you do not 
specify an external reference, the channel will use the internal 
reference.  You cannot use an external analog output reference with the 
AT-MIO-16XE-10, AT-AI-16XE-10, or AT-MIO-16XE-50.  Analog 
output configuration options are explained in the Analog Output section 
in Chapter 3, Hardware Overview.  The following ranges and ratings 
apply to the EXTREF input:

•

Usable input voltage range:  

±

11 V peak with respect to AOGND

•

Absolute maximum ratings:  

±

15 V peak with respect to AOGND

AOGND is the ground reference signal for both analog output channels 
and the external reference signal.