Output Status When Changing Range; Analog Output Data Generation Methods - Advantech PCI-1716 User Manual

Figure 3.6 Power-on glitch remover of the analog output.
3.2.3

Output Status When Changing Range

When analog output range changes, the DAC setting remains unchanged, and so
does the output voltage. The DAC will be updated to the new output range only when
a new output value is written. For example, if an analog output channel is at +5 V of
±10 V range, after changing to 0 V to 5 V range, the output voltage still remains at +5
V. If a new output value of +2 V is written, DAC will be updated to 0 V to 5 V range
and output voltage will be updated to +2 V at the same time. This is shown in Figure
3.7.
3.2.4

Analog Output Data Generation Methods

The device supports both static (software-timed) analog output update and buffered
(hardware-timed) analog output generation.
3.2.4.1 Static (Software-Timed) Analog Output Update
With static update, the software controls the rate and time of date, which is thus also
called software-timed update. Whenever the software sends a write command, the
value of analog output channel is updated as shown in Figure 3.8.
PCI-1716_Series User Manual
Figure 3.7 Output status when changing range.
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