Fig. 8-1 Analog Output Channels - ETAS ES930.1 User Manual

ETAS
8 Analog Output Channels ("AO" Connection)
The ES930.1 provides four identical analog output channels at the "AO" connec-
tion.
8.1 Assemblies of the Analog Output Channels
8.1.1 Overview
Fig. 8-1
The analog output channels "AO 1" to "AO 4" of the ES930.1 feature an identical
design. Each channel consists of the following assemblies (see block diagram
in Fig. 8-1 on page 51):
• D/A converter
• Overvoltage protection
The functionality of all analog output channels can be configured separately.
8.1.2 D/A Converter
The 14-bit D/A converter of the analog output channel converts the digital input
signal provided by the output unit into an analog output voltage in the range of
0 V to +10 V. The maximum output current is 4 mA.
8.1.2.1 Synchronous Groups and update Mode
The update mode can be configured independently for every analog output
channel. The output signals of the analog channels can optionally be updated
either asynchronously (individually or for each channel) or synchronously. For
synchronous operation, the analog channel is assigned either to the synchro-
nous group X or the synchronous group Y. All channels of a synchronous group
are updated together.
During the synchronous operation, the digital values are applied simultaneously
to the D/A converters of the channels of the synchronous group for transfor-
mation.
8.1.2.2 Initial Value
The initial value of the output voltage of a channel after switching on the
ES930.1 can be configured so that devices or measuring setups connected to
the module are supplied with the corresponding signals before the initialization
(e.g. through a rapid prototyping model) is completed.
ES930.1 - User Guide
Analog Output Channel n
Overvoltage
Protection
Analog Output Channels
Analog Output Channels ("AO" Connection)
14 Bit D/A
Converter
Output Unit
51