Measurement Computing DaqScan 2000 Series - Manual (Page 58)

8-8 Taking Measurements 898095 DaqScan/2000 Series
Using DBK Cards and Modules for Signal Conditioning
The DBK signal-conditioning cards and module are designed for use with DaqLabs, DaqScans,
DaqBooks, LogBooks, and various types of data acquisition boards, i.e., ISA, PCI, and
compact-PCI types. The DBKs perform best when used with an acquisition device that can
dynamically select channel, gain, and range. DBK cards and modules with dynamic channel
and gain/range selection allow for high channel-to-channel scan rates with a variety of
transducers.
Note: Only passive DBKs, such as the DBK1 BNC module, the DBK11A screw terminal card,
and the DBK40 BNC analog interface, can be used with Daq PC-Cards.
DBK output signals can be bipolar, e.g., -5 to +5 V, or unipolar, e.g., 0 to 10 V. The user can
select a range of relevant values to correspond to the lowest signal (e.g., -5 or 0 V) and the
highest signal (e.g., 5 or 10 V) signal. This type of range selection guarantees the highest
resolution in 12-bit or 16-bit conversion.
The majority of these modules have their own power supply; however, several options exist
for packaging and powering the DBKs.
Reference Note:
DBK options are detailed in the DBK Option Cards and Modules User’s Manual
(p/n 457-0905). As a part of product support, the manual is automatically loaded
onto your hard drive during software installation. The default location is the
Programs group, which can be accessed through the Windows Desktop. A PDF
version of the document can be read directly from the data acquisition CD via the
introduction screen’s <View PDFs> button.