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Industrial Micromodems

Micromodems

Fiber Optic Industrial Micromodems

VERSITRON’s M62xxD and M82xxD MicroModem Series provide fully transparent fiber optic transmission for data, clock and control signals. MicroModems provide synchronous or asynchronous, continuously variable, data transmission from 1 bps to 5 Mbps. Mode of operation is either full duplex or simplex. Small enough to install directly to data terminal and communications equipment, these mo-dems offer versatile solutions and complete transparency for data communications. M82xxD modems provide handshaking control signals associated with RS-232, RS-423 and MIL-STD-188-114A (Unbalanced). M62xxD modems provide handshaking control signals associated with RS-530, RS-422, and MIL-STD-188-114A (Balanced). RS-449 or V.35 standards are also supported with the use of M62xxD modems and specific adapters. Basic operation involves multiplexing the control signals along with the clock and data signals and transmitting the combined signal to the remote unit. At the remote end the combined signal is de-multiplexed and applied to the electrical interface. The electrical interface will be a DB25F (DCE) if connecting to a terminal (DTE) interface. It will be a DB25M (DTE) if connecting to a modem (DCE) interface. LC connectors are standard for the fiber interface.
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    About Industrial Micromodems

    When smaller is best, VERSITRON's M62xxD and M82xxD series MicroModems® provide reliable fiber optic data transmission and reception in a compact package with fully transparent operation and full handshaking signals.
    These products can currently be found in two unusual application scenarios. The M82xxD Series singlemode versions are being used in a university research project for underwater data communications links between submerged equipment.

    Purpose: Counting Sea Plankton. These converters are also being used at surface level in order to monitor the count.

    The M82xxD Series are also currently used to ensure safe operations at airports. Both pilots and air traffic controllers alike are dependent on numerous systems of light, markings, and signs. The Model M82xxDs are employed to transmit RS-232 switch control signals over fiber. Use of these products allow for secure transmission of these crucial control signals over greater distances with additional isolation from lightning strikes and EMI/RFI disturbances. Both the M62xxD and the M82xxD Series products operate in either source-timing or terminal-timing modes. In the source-timing mode, a clock and data resynchronization circuit eliminates loop delay and inverted clock signals.

    All units are specified with a bit error rate of 10 to the minus 9th. DCE and DTE copper interfaces are available, and LC optical connectors make use of the latest in SFP technology. Note: V.35 and RS-449 Standards may be configured with optional adapters and the M62xxD Series.
    The M62xxD and M82xxD Series products may also be used as multiplexers. Up to six asynchronous data streams may be accommodated by one MicroModem:
    • 2 high-speed signals on the clock and data lines
    • 4 low-speed signals on the control line
    Small enough to connect directly to data terminal and communications equipment, these products offer versatile solutions and complete transparency for data communications.
    Benefits of fiber optics in communications systems:
    • Security
    • Greater Bandwidth
    • EMI/RFI Immunity
    • Greater Distances
    • Isolation
    • Low Signal Attenuation

    Application Diagram

    micromodem connections to data communication equipments

    Superior Performance – For All Datacom Configurations

    These products assure reliable data transmission, at distances up to 2Km over multimode f.o. cable, 20Km over singlemode.
    The ability to operate transparently – with minimal affect on transmitted and/or received data – is a major performance advantage of the M62xxD and M82xxD Series. To further assure accuracy in source timing applications, the clock and data are realigned in a unique source timing circuit. Even when translating from one serial data standard to another, minimal delay or no signal formatting effects are encountered.
    With their wide range of data rates, and ability to pass control signals for the RS-232 and RS-530 Standards, the M62xxD and M82xxD Series products provide ideal Datacom links as system data rates increase, as additional control signals are required, or as low-speed data channels need to be added. Either Series can be used in a basic three-wire configuration, yet can accommodate a system with control line functions.

    Pinout Diagram
    DCE and DTE micromodem

    VERSITRON "Micros" offer a unique combination of advantages:

    • Fully Transparent Operation Independent data, clock, and control lines permit a wide range of application possibilities.
    • Extremely Small Size Minimizes space requirements for desktop operation.
    • Electrical Isolation Eliminates problems with ground potential differences and provides dielectric isolation.
    • Enhanced Versatility Provides Null Modem (asynchronous or synchronous terminal-timing mode only): DCE to DCE or DTE to DTE.
    • Host Power For RS-232, RS423, and MIL-STD-188-114A unbalanced interfaces using pin 9 eliminates the need for external power sources. These products are also powered by a separate AC "wall-brick" transformer.
    • 19" Standard Rack Mount Chassis Model MRR-16 Can hold up to 16 "Micros" using single or redundant power supplies.
    • Rugged, Extruded Aluminum Housings Protect internal components from possible damage.
    • Full Service and Support from VERSITRON Our technical service team will promptly respond to your inquiries to help keep your systems functioning as smoothly as possible. Technical Support is free and unlimited, and all VERSITRON products carry a lifetime warranty.

    Micromodem Accessories

    Model
    Description

    MRR-16

    16-slot rack mount chassis

    M0004

    100-240V/1A 47-63Hz to 12VDC Power Supply

    M0001

    Power Jumper 6” Cable. (One per Micromodem Required)

    PSAC08

    110VAC to 12VDC Power Adapter (USA)

    PSAC09

    220VAC to 12VDP Power Adapter (European)

    M0011

    RS-530 DCE to RS-449 DCE (Female) Adapter

    M0012

    RS-530 DTE to RS-449 DTE (Male) Adapter

    M0013

    RS-530 DCE to V.35 DCE (Female) Adapter

    M0014

    RS-530 DTE to V.35 DTE (Male) Adapter

    M0021

    DB25 Gender Changer, Male-to-Male

    M0022

    DB25 Gender Changer, Female-to-Female

    Configuration Options

    We encourage our customers to contact us by phone at 1-800-537-2296 or sales@versitron.com to discuss serial data applications. Let our experts help you with selecting the appropriate serial data modem and the installation option that would satisfy your requirement. We look forward to assisting with your project!