Products

CAMAC - 2927 IBM PC/AT Interface View Datasheet Request Ordering Information     ABOUT 2927 The Model 2927 is a computer bus adapter for use with the IBM PC/AT, Compaq 386, or other fully compatible computer. It mounts in any available 16-bit expansion slot within the computer, and communicates with the host using a 16-bit data path. This interface supports up to eight Model 3922 crate controllers via a Model 5843-Txyz 40-conductor, twisted-pair ribbon cable. (Order this cable separately.) Signaling on this bus is accomplished with RS-485 balanced-line drivers and receivers, giving high noise immunity and allowing an overall cable distance between the computer interface and the last 3922 of up to 90 meters (300 feet). The last 3922 on the Parallel Bus is terminated with a termination card (provided with the 3922). Program transfers as well as DMA data blocks are supported by this interface. The DMA channel provides speed-efficient block transfers with the following modes of operation: Q-Scan, Q-Stop, Wait Until Q, and Stop on Word Count. Interrupt capability is provided. An interrupt can be generated by DMA Done or by a pending LAM. In response to a LAM interrupt, the host computer performs a parallel poll of the 3922s via the 2927. In response to the parallel poll, each 3922 requesting service asserts one of the eight data lines (i.e., Crate 5 asserts Data Line 5). This method increases the efficiency of the interrupt service routing in multicrate systems.

Features Provides a dedicated PC/AT interfaces Used with 3922 Crate Controllers Up to eight crate controllers addressed on a single bus Mounts in any 16-bit expansion slot of an IBM PC/AT, Compaq 386 or compatible Interrupts for Done and LAM response RS-485 balanced line signaling between the interface and 3922(s) for high noise immunity Supports crate controller bus lengths to 90 meters (300 feet) Strap selection for DMA channel and Interrupt Request level Driver support software available Applications General purpose data acquisition and control Laboratory automation Industrial process control -- Jump to Data Acquisition Product -- Counters and Pulse Output Modules Relay Multiplexer Mainframe/Chassis Analog and Digital I/O Analog I/O and Signal Conditioners Counters and Pulse Output Modules Digital Input and Output Memory, Controllers, DSPs & Mainframes Modules for the V710 Termination Panel Signal Conditioner Chassis Special Functions Termination Assemblies and Panels VME to VXI Carrier/Adapter Card VXI Software Applications, Drivers, etc. Grand Interconnect Analog Input Analog Output Cables and Connectors CAMAC Equipment Controllers & Misc. Counters, Timer and Clock Module Digital Input Digital Output Display Memory Modules Process Interface Special Function Modules Software Drivers Transient Recorder Modules Instrumentation Recorders Signal Conditioning Systems Data Loggers/Recorders Temperature Loggers Cyber Systems Data Acquistions Systems Preston Scientific Analog & Digital Systems Return to Product Category