Data Translation DT9850 Series, User Manual, Page: 55 / 104

Principles of Operation
55
Operation Modes
You can perform the following analog output operations on DT9850 Series modules:
• Update one analog output channel with a single value
• Simultaneously update analog output channels on one module with a single value
• Simultaneously update analog output channels on multiple modules with a single value
• Continuously update analog output channels on one module with a waveform
The following subsections describe how to configure the module for these operation types.
Updating a Single Analog Output Channel
To update the value of a single analog output channel, use software to perform a single value
operation. You specify the analog output channel to update and the value to output.
When you start the operation, the analog output channel is updated immediately.
Single-value operations stop automatically when finished; you cannot stop a single-value
operation.
Simultaneously Updating Analog Output Channels on One Module with a
Single Value
To simultaneously update all the analog output channels of one module with a single value,
use software to perform a single values operation. In a single values operation, you specify the
analog output channels to update and the value to write to each analog output channel.
The module simultaneously updates the specified analog output channels with the values that
you specified as soon as the single values command is issued.
Simultaneously Updating Analog Output Channels on Multiple Modules with
a Single Value
You can simultaneously update the analog output channels of multiple modules by
connecting the modules together through their DAC_Sync pins, as shown in
Figure 14 .