Measurement Computing 200 Series DaqBook - Manual (Page 40)

pg. 4, DBK Basics 02-13-02 Daq Systems
Connecting DBKs to DaqBoard/2000 Series and cPCI DaqBoard/2000c Series Boards
DaqBoard/2000 Series and cPCI DaqBoard/2000 Series boards have 100-pin connectors designated as P4.
The 100 pins correlate to various pins on P1, P2, and P3 DB37 connectors.* Connectivity in the system is
as follows (see figure).
•
Both the DaqBoard/2000 and /2000c Series board connect to a CA-195 cable.
The cable has two, 100-pin, P4 connectors.
•
The CA-195 connects to a DBK200 Series adapter board or adapter module for 100-pin to
37-pin adaptations, e.g., P4-to-P1, P2, P3; but not necessarily all three.*
•
The DBK200 Series adapter connects to a CA-37-x ribbon cable, where “x” indicates the
number of expansion devices that can be connected. For example, in addition to providing a
DB37 connector to interface with the primary data acquisition device, a CA-37-3 cable
includes three additional DB37 connectors. These provide a means of adding three DBKs to
one port. Use of a CA-37-16 cable will allow up to 16 DBKs to be added.
•
The CA-37-x cable connects to expansion DBKs, in accordance with port type. For example,
Analog DBKs to port P1, Digital DBKs to port 2, and passive DBKs to port 3.
Connecting DBKs to a DaqBoard/2000 Series Board
* DaqBoard/2003 and cPCI DaqBoard/2003c are exceptions to the above connectivity method. The /2003
board typically connects directly to a DBK205 (P4-to-Screw Terminal Adapter), as discussed in the
DBK Option Cards and Modules User’s Manual (p/n 457-0905).