Measurement Computing DBK Part 2 - Manual (Page 93)

8B Isolated Signal Conditioning Module 967792 DKB48, pg. 13
Powering the System
The DBK48 contains an internal power supply. The unit can be powered by an AC power adapter or any
10 to 30 VDC source, such as a 12 V car battery. For portable or field applications, DBK48 and the
primary Daq device can be powered by a DBK30A rechargeable battery module or DBK34 vehicle UPS
module. The supply input is fully isolated from the measurement system. If the fuse requires replacement,
use a
2 Amp Mini ATO Fuse, factory part number FU-8-2 (Littelfuse # 297-002).
DBK48 Rear Panel
DBK48’s internal power supply supplies power to the 8B modules only. The DIN5
Power Out connector is a pass-through to allow for a power daisy-chain.
Prior to daisy-chaining from one module’s power connector to another, be sure to
compute the power consumption for the entire system. Some modules may need
independent power adapters. See chapter 2 for information regarding power supply
issues.
Software Setup
You will need to set several parameters so DaqView can best meet your application requirements.
After the 8B module type is identified, DaqView figures out the m and b (of the mx+b equation) for proper
engineering units scaling. An example of the mx + b equation follows shortly.
LogView does not include the means to directly select the DBK48. To use a DBK48 and
its 8B modules with LogBook: Select DBK42 in LogView. This will recognize the DBK48, but
will identify it as a DBK42. For each 8B module, select the 5B module that exhibits the same
measurement ranges; three examples follow:
For SC-8B30-01 select SC-5B30-01 as both have an Input Range of ±10 mV;
and an Output Range of ±5V.
For SC-8B34-02 select SC-5B34-02 as both are Type 100 Ohm Pt;
with an Input Range of 0°C to +100°C.
For SC-8B47-T-07 select SC-5B47-T-07 as both are a Type T Thermocouple,
with an Input Range of 0°C to +200°C.
Reference Note:
o For DaqView information refer to chapter 3, DBK Setup in DaqView and to the DaqView
PDF included on your data acquisition CD.
o For LogView information refer to chapter 4, DBK Setup in LogView and to the LogView
section of the LogBook PDF included on your data acquisition CD. Also, see above
note.
o The API includes functions applicable to the DBK48. Refer to related material in the
Programmer’s Manual (p/n 1008-0901) as needed.
PDF Note: During software installation, Adobe
®
PDF versions of user manuals automatically install onto
your hard drive as a part of product support. The default location is in the Programs group,
which can be accessed from the Windows Desktop. Refer to the PDF documentation for
details regarding both hardware and software. Note that you can also access PDF documents
directly from the data acquisition CD via the button on the CD’s opening
screen.