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Synchronous-Asynchronous RS-232-422-485-530 Interfaces For IBM PC-XT-AT and Compatibles
- Single and Dual ChannelInterfaces
- Reliable Communicationup to 5000 Feet (1.5 km)
- OEM Security Feature forSoftware Protection(OMG-ACB-II)
- Selectable Address
- Individually SelectableInterrupts 3–5 andDMA Channel 1–3
- 2 or 4-Wire RS-422Operation
- DB-25 Male ShieldedConnectors
- Driver SoftwareExamples Provided
- SeaMac HDLC/SDLCDrivers, Applications,and Sample SourceCode Included
Description The OMG-ACB Series provides thePC-based system with single/dualhigh-speed synchronous/asynchronous links to instrumentsrequiring extremely fast data flow.The RS-422 communicationsstandard allows the OMG-ACBto communicate reliably at highspeeds under harsh conditions,which makes it an ideal solution forindustrial environments. Line noise,present in industrial environments,is eliminated over the RS-422 line.By utilizing RS-422, factoryapplications requiring long distancecommunications operate withhigh data integrity. Signals aretransmitted and received via25-pin sub-D connector(s). TheOMG-ACB-II is also capable ofRS-232 for applications requiringshorter distances and RS-232compatibility.
Balanced differential driversand receivers are utilized toprovide RS-422 and RS-485communications. Selectableinterrupts (IRQ levels) increasesthe card’s versatility. Distancesof 5000 ft in noisy industrialenvironments are easilyaccommodated with the OMG-ACB.
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