VME Analog, Serial, Dgitial I/O

    GSC has a wide variety of analog, serial, and digital I/O cards in the PMC form factor.
These PMC cards can be used on VME CPU boards for I/O expansion.

There is a 6U dual 64/100 PMC VME carrier (with a P0 connector) available from Kontron. For Info on this carrier see:

There is a 6U dual 64/100 PMC VME carrier (with a P0 connector) available from XES- Inc. For Info on this carrier see:

Up to six PMC cards can be used with a single VME CPU board via adapters.
For example one CPU card can utilize up to 384 analog input channels by using PMC expansion adapters. See "High Speed Expansion on VME with PMC", below.

Serial I/O card on True VME Form Factor

    Four channel serial I/O with 32K byte FIFOs on each channel... [Read More]

Data Acquistion I/O Boards

    General Standards Corporation is a leading supplier of data acquisition I/O boards, provides a complete family of data acquisition cards for sonar, industrial, and embedded applications on several form factors/busses, and for many operating systems.

    Functions available include analog I/O, serial I/O, and high speed parallel I/O.

Form Factors:
  • PCI-Express
  • PXI
  • PMC
  • PCI
  • cPCI
  • PCI-X
  • cPCI-X
  • XMC
  • VME
  • PC/104-Plus
  • PC/104-Express
  • VPX
  • Ask About Other Form Factors

    Software Drivers:
  • Windows
  • VxWorks
  • QNX
  • Linux
  • MathWorks
  • Solaris
  • Labview
  • xPC Target
  • Ask About Other Drivers

  • FREE Windows, Linux, and Labview Drivers.
    FREE Loaner Boards.

    Analog I/O Boards

            Analog I/O Board Features include:
            Up to 64 input channels per board;
            Programmable Sampling rates to 50M SPS;
            Multi-board synchronization;
            Sigma-Delta and Delta-Sigma Analog I/O;
            Resolutions from 12 bits to 24 bits.

    Analog Selection Tables

    Serial I/O Boards

            Serial I/O Board protocols include Asynchronous, Bisync, SDLC, HDLC, and IEEE 802.3, synchronous telemetry, simple clock/data ("-SYNC" product line), and di-phase, etc.

            Transceiver support RS-422 (V.10), RS-232 (V.28), V.35, RS-530, as well as other software selectable Mixed Protocol modes.

    Serial I/O Selection Tables

    Digital I/O Boards

    High speed digital/parallel I/O boards provide large FIFOs and support several cable transceiver options, RS-422, RS-485, LVDS, PECL, and TTL.

    Digital I/O Selection Table

    High Speed Expansion on VME with PMC

        Numerous CPU boards on VME provide PMC slots for I/O expansion.

        One CPU board can utilize up to six PMC cards via the PMCspan product. This allows one CPU board to have high speed access to: 1) Up to 384 analog input channels; or 2) Up to 96 analog output channels; or 3) Up to 24 high speed bidirectional serial I/O channels; or 4) Up to six high speed 32-bit bi-directional parallel busses; or 5) Any combination of the above.     Standalone PMC-to-VME adapters can provided for additional I/O expansion.

        ------- PMCspan ---------
        PMCspan allows for Up to Six PMC Cards to attatch to the I/O computer board.
        PMCspan works with Emerson Network Power's VME based CPU modules. When coupled with an MCG processor module, the PMCspan provides up to six PMCs, more expansion capability than any other VMEbus processor module. Each PMCspan supports either two single-wide or one double-wide PCI Mezzanine Card (PMC). By stacking PMCspans, a total of four additional single-wide PMCs can be added to MCG's compute engines-either today or as future application growth demands.
        The PMCspan is a standard 6U single-slot VMEbus module that links to its host board via a PCI expansion connector. It supports both front panel and P2 I/O access for customer supplied PMCs.
        For more Info:
    http://www.emersonnetworkpowerembeddedcomputing.com/pmcspan_pmc_expansion_bo ard_for_powerplus_vme_architecture/77


    Background on VMEbus

        ---- VME32 ---
        VME32 is where everything started in August 1982. The original specification was sponsored by VITA and eventually standardized as IEEE 1014. It established a framework for 8-, 16- and 32-bit parallel-bus computer architectures that can implement single and multiprocessor systems. This bus includes the initial four basic subbuses: (1) data transfer bus, (2) priority interrupt bus, (3) arbitration bus, and (4) utility bus. Other architectures with other subbuses are possible within this VME framework.
        ---- VME64 ---
        In 1994, VME64 was formally approved by ANSI as ANSI/VITA 1-1994, incorporating all the features of VME32 and adding support for 64-bit transfers.
        Parallel Data: 8-, 16-, 32- and 64-bit
    Bandwidth: up to 80MB/secThe data transfer bus will support 8-, 16-, 32-, and 64-bit data transfers in multiplexed and non multiplexed form. The transfer protocols are asynchronous with varying degrees of handshaking dependent on the speeds required. The priority interrupt subsystem provides real-time interrupt services to the system. The allocation of bus mastership is performed by the arbitration subsystem which allows the implementation of several prioritization algorithms. The utility bus provides the system with power plus power-up and power-down synchronization. The mechanical specifications of boards, backplanes, subracks, and enclosures are based on IEC 297 and IEEE 1101.1 specifications, also known as the Eurocard form factor. Additional standards exist that can be used as sub-busses to this architecture for data transfers transactions, peripheral interfaces and intra-crate communications among compatible modules.
        For more Info on VME see VITA:
        For detailed History and Description, see Wikipedia:

            ========= VME =========
    Miscellelanous terms used with VME:(vme digital) vme digital, vme digital board, vme digital card, vme digital i/o, vme digital input, vme digital io, vme lvds i/o, and vme pecl i/o.
            ---- vme data acquisition -------
    VME Data Acquisition
            -- vme serial ---
    Includes: vme asynchronous, vme rs-232, vme rs-422, vme rs-485, vme serial, vme serial board, vme serial card, and vme synchronous.
            ----- vme analog
    Includes: vme analog, vme analog board, vme analog card, vme analog i/o, vme analog input, and vme analog io.
            ---- vme opto-coupler
    Includes: vme optically isolated, vme opto, and vme optoisolated.
            ----- vme drivers
    Includes: vme windows 2000, and vme windows nt.

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