Omega Engineering 100/200 Series User Manual page 21

DAC Reference Selection (JP2)
This 5×2 header (JP2) allows you to select internal or external voltage references for the two separate
analog outputs. If the internal -5 VDC reference is selected, either DAC can output from 0 to +5 VDC as
the register count varies from 0 to 4095 (12-bit). If an external voltage reference is desired (up to +10
VDC or –10 VDC), the shunt jumpers must be set accordingly. There is also a provision to allow the
outputting of a simultaneous Sample-Hold command signal on the DAC1-REFIN pin with the DAC1 set
up for an internal reference.
Note: The SSH setting is used with DBK2, DBK4, DBK5, DBK7, DBK17, DBK50, and DBK51.
Refer to the DBK options manual (p/n 457-0905) as needed.
JP2
EXT
DAC1
INT
SSH
INT
DAC0
EXT
DAC0 External Ref
DAC1 External Ref
OMB-DaqBook User's Manual
Reference Note:
The Power Management section of the DBK Option Cards and Modules User's Manual
(p/n OMB-457-0905) contains additional power-related information. As a part of product
support, this manual is automatically loaded onto your hard drive during software installation.
The default location is the Programs directory, which can be accessed through the Windows
Desktop.
The SSH setting cannot be used at the same time as a DAC1 external reference due to a
potentially damaging conflict on P1 pin #26. The defaults are both DAC0 and DAC1
set to Internal Reference.
JP2
DAC0 External Ref DAC0 Internal Ref
DAC1 Internal Ref DAC1 External Ref
JP2 DAC Reference Settings
CAUTION
JP2 JP2
DAC0 Internal Ref
DAC1 Internal Ref
01-23-02
Factory Default
JP2
DAC0 Internal Ref DAC0 External Ref
DAC1 Internal Ref DAC1 Internal Ref
with SSH with SSH
DaqBook Hardware
JP2
3-5