Dbk207 and dbk207/cjc – Measurement Computing 2000 Series Daqboar User Manual
Page 73
DaqBoard/2000 and DaqBoard/2000c User’s Manual
03-01-02
System Connections & Pinouts 2-5
DBK207 and DBK207/CJC
The DBK207 and DBK207/CJC are carrier boards for 5B-compatible analog input modules. They
each provide:
•
two P1 connectors – for ANALOG I/O
•
a 5 VDC power terminal
•
footprints for sixteen 5B Modules
•
16 terminal blocks.
In addition, DBK207/CJC provides Cold Junction Compensation. The DBK207 and DBK207/CJC
each include a 100-pin P4 connector for use with DaqBoard/2000 Series and cPCI DaqBoard/2000c
Series Boards.
DBK207/CJC Carrier Board for 5B Compatible Modules
:$51,1*
Ensure that hard-wire emergency over-ride circuitry exists for all applications that
make use of dangerous switch-loads. Do not operate such switch-loads unless
emergency over-ride circuitry is present.
DBK207 and DBK207/CJC are typically installed in NEMA-type panels; however, they may be installed on
DIN rails. Separate mounting instructions are included with Rack Mount Kit (part no. Rack-DBK-3) and
with DIN-rail Mount Kit (part no. DIN-DBK-1).
DBK207 and DBK207/CJC allow Daq-based acquisition systems to use various combinations of sixteen
5B signal-conditioning modules. 5B modules can accommodate a variety of signals, including low-level
thermocouple and strain-gage signals. Configuration options are flexible. You can select the type of signal
attached to each channel. One Daq device can support up to 16 DBK207 [or DBK207/CJC] boards,
providing a maximum of 256 isolated, analog input channels. Note that Daq devices scan the channels at
the same 10 µs/channel rate as other DBKs (256 scans in 2.56 ms in a full system).
Each user-installed 5B module offers 500 V isolation from the system and between channels. Both
DBK207 and DBK207/CJC include 16 screw-terminal blocks for signal inputs. In addition, the
DBK207/CJC includes cold junction compensators (CJCs) for use with thermocouple 5B modules.
Sockets are provided for user-installed AC1362 current-sense resistor modules, as discussed in
5B Module Connection
in the DBK207 section of the DBK Option Cards and Modules User’s Manual
(p/n 457-0905).