User manual

DBK23 Isolated Digital Input Chassis
Overview …… 1
Power Requirements …… 1
Hardware Setup …… 2
Card Connection …… 2
Card Configuration …… 3
DaqBook and DaqBoard Connection …… 3
DaqBoard/2000 Series Board Connection …… 3
DaqBook and DaqBoard Configuration …… 4
LogBook Connection …… 4
Software Setup …… 4
DBK23 – Specifications …… 6
Reference Notes:
o Chapter 2 includes pinouts for P1, P2, P3, and P4. Refer to pinouts applicable to your
system, as needed.
o In regard to calculating system power requirements, refer to DBK Basics located near
the front of this manual.
Overview
The DBK23 is a 3-port by 8-bit digital input chassis that connects to the LogBook’s, DaqBook or
DaqBoard[ISA type] P2 Digital I/O Port or, for the DaqBoard/2000 Series boards [except
DaqBoard/2003], to an appropriate P4 adapter. These adapters are discussed in the DBK200 series
document modules.
The DBK23 provides 500 V isolation from the DaqBook/DaqBoard or LogBook system and from channel-
to-channel. Up to 8 DBK23s can attach to the LogBook or to the DaqBook/DaqBoard (not the Daq PC-
Card), offering up to 192 bits of isolated digital input.
The DBK23 provides screw terminal access to each of its 24 isolated inputs. A slide-out PCB allows easy
access to the controls and connectors. The input circuitry allows input voltages ranging from 0 to 30.0 V.
Note: The local digital I/O cannot be used while any DBK23s are attached.
Power Requirements
The DBK23 can be powered from a 9 to 24 VDC source such as an adapter, a standard 12 volt car battery,
or an optional rechargeable nickel-cadmium battery module (DBK30A). This power flexibility makes the
DBK23 ideal for field and remote data acquisition applications.
DBK Option Cards and Modules 879795 DBK23, pg. 1