Omega Products OMB-DBK20 User Manual
H-70
H
To Order
(Specify Model Number)
Model Number Price Description
OMB-DBK20 $209 48-Line General-Purpose Digital I/O Card with Screw Terminal Connectors
OMB-DBK21 209 48-Line General-Purpose Digital I/O Card with DB37 Field Interface
Ordering Example: OMB-DBK20 is a 48-line general-purpose digital I/O card with screw terminals, $209.
The OMB-DBK20, $209 and OMB-DBK21, $209 increase the digital
I/O capacity of the OMB-LOGBOOK and DAQBOARD-2000 Series
(OMB-DBK20 shown above)
⻬ Offers 48 I/O Lines
Expandable in 8-Bit
Groups as Inputs
or Outputs
The OMB-DBK20 and OMB-DBK21
general-purpose digital I/O cards
expand the number of digital I/O lines by
forty-eight per card. The OMB-DBK20
and OMB-DBK21 connect to the digital
I/O connectors on the OMB-LOGBOOK,
OMB-DAQBOARD-2000 Series or
OMB-DIGIBOOK-72 data acquisition
systems.
Please note that when either the
OMB-DBK20 or OMB-DBK21 is
connected, the OMB-LOGBOOK,
OMB-DAQBOARD-2000 Series or
OMB-DIGIBOOK-72 digital I/O lines
do not function as digital I/O lines for
user-connected digital signals. Thus,
for example, the first OMB-DBK20 or
OMB-DBK21 card attached increases
the system’s number of usable digital
I/O lines from twenty-four to forty-eight,
and subsequent cards each add
forty-eight additional lines of userprogrammable digital I/O.
Up to four OMB-DBK20 or
OMB-DBK21 cards can be attached
to the P2 port of a system, for a total
of 192 lines.
The OMB-DBK20 and OMB-DBK21
differ only in that the OMB-DBK20
features screw-terminals for signal
outputs, whereas the OMB-DBK21
provides DB37 male connectors for
signal outputs.
Specifications
48 I/O channels programmable in
8-bit groups as inputs or outputs
Connector: DB37 male, mates
with P2 pinout on an OMB-LOGBOOK,
OMB-DAQBOARD-2000 Series
(attachment to the DAQBOARD’s P2
further requires the use of an optional
OMB-CA-60 cable) or with P2-1, P2-2
or P2-3 on the OMB-DIGIBOOK-72; the
OMB-DBK20 offers screw-terminals
for signal outputs; the OMB-DBK21
offers DB37 male connectors for
signal outputs
Device: 82C55 x 2
Output Voltage Levels
Minimum “1” Voltage:
3.0 @ 2.5 mA sourcing
Maximum “0” Voltage:
0.4 @ 2.5 mA sinking
Output Currents
Maximum Source Current: 2.5 mA
Maximum Sink Current: -2.5 mA
Input Voltage Levels
Minimum Required “1” Voltage
Level: 2 V
Maximum Allowed “0” Voltage
Level: 0.8 V
Output Float Leakage Current:
10 µA
Cables: Use OMB-CA-37-x cable
with OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series
OMB-DBK20 and OMB-DBK21
48-Line General-Purpose Digital I/O Cards
for OMB-LOGBOOK and DAQBOARD-2000 Series
Model OMB-DBK20/21
$
209
ALL MODELS AVAILABLE FOR FAST DELIVERY!
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