Omega Engineering OMB-DBK-34A, User Manual

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The DBK4’s sub-channel address is selected using switches s5 - s7 of DIP switch SW1 (located above and
to the right of JP1). As a 2-channel card, 3 switches are used to select 8 sub-channel addresses. Therefore,
it is possible for each main channel to use up to 8 DBK4s. The figure below shows 16 switch settings for
the main channel and 8 settings for the sub-channel (card) selection.
Card Connections
The DBK4 connects to the LogBook’s or Daq device’s P1 port or a P1 port on a DBK Expansion Module.
For signal inputs, a BNC connector interface is provided for each channel. The DBK4 PC Board has a
microdot connector footprint that is wired in parallel with each BNC connector. The user is can customize
the input connector as needed. As a factory default, the DBK4 is not populated with microdot connectors.
CE Compliance
Special Cables and Connectors for CE Compliance
To insulate BNC connectors from high-voltage sources such as static charges that can enter the circuitry
via an exposed connector and cause ESD damage. Specific cables and connectors that must be used (as
stated in the Declaration of Conformity), PVC dust caps (p/n CN-96) must cover all unused BNC
connectors. With dust caps removed, special coaxial cables with insulated end-connectors and rubber O-
rings
(p/n 418-0800) must be used (see figure). Properly installed connectors and dust caps ensure that no
metallic surfaces are exposed.
DBK4, pg. 6
958293
DBK Option Cards and Modules