DAC Configuration (JP5)
The analog outputs on Poseidon can be set to operate in bipolar (both + and –) or unipolar (+ only) output voltage
ranges. In addition, the full-scale output range can be set to 5V, 10V, or programmable. The maximum output
current on any channel is 5mA. Current outputs such as 0-20mA outputs are not supported.
On power-up, the DACs can be configured to reset to mid-scale (0V in bipolar mode) or zero scale (0V in unipolar
mode). Generally, the reset mode should be selected so that the DACs power-up to 0V.
In programmable mode, the full-scale output voltage can be set anywhere from 0V to 10V in software. You must
use the Universal Driver software to set programmable D/A range, because it requires calibration to fine-tune the
setting to the desired value.
To configure the analog output range, set jumper block JP5 according to the tables below. The first four positions
are used for the output range, and the fifth position is for the power-up reset mode.
Output Range
10V
5V
Programmable
Polarity
D/A
Clear/Select
±5V
Out
In
Out
In
X
±10V
In
Out
Out
In
X
0-5V
Out
In
Out
Out
X
0-10V
In
Out
Out
Out
X
Programmable, unipolar
Out
Out
In
Out
X
Programmable, bipolar
Out
Out
In
In
X
Note: Programmable mode requires use of driver software to set and calibrate range.
The default configuration is 5V, unipolar.
Diamond Systems Corporation
Poseidon User Manual
Page 41
Figure 17: Analog I/O Single-ended/Differential Configuration
Example
Figure 18: JP5 Jumper Block
