Video, data and contacts transmitter

The DEM-720 equipment allows to create point-to-point links for the digital transmission of video + data and contact over an optical fiber, up to distances of 25 km (50 km with receiver). Provided with a communication channel compatible with the EIA / TIA / RS-232,422 & 485 standard. Built-in alarm mode, activating the isolated contact on the receiver when the video signal or link is lost. Front LEDs for verification of power supply, links, remote / local contact and data transmission. Plug and Play design that facilitates the start-up of the installation. Digital video transmission allows longer link distances with high image quality. Rack mounting formats for 19 ”3U Chassis (PAWAL) and desktop / DIN Rail.

 

Video

    Input / output impedance: 75Ω
    Input / output voltage: 1.2V ppmax
    Video connector: BNC
    Pass band: 10Hz - 6MHz
    Signal to noise ratio:> 60dB
    Sync error: <5%
    Differential gain: <2.5%
    Differential phase: <2 °
    C / L gain: <5%

Communications

    Selectable data: RS232 / 422/485
    Speed: Up to 250Kbps
    Data connector: RJ45
    RS422 / RS485 termination resistance: 120Ω

Contact

    Input: Dry contact
    Maximum output voltage: 250V AC / 350V DC
    Maximum output current: 25 mA

Optical characteristics

    Single mode optical power: -15dBm
    Single mode reception sensitivity: -34dBm

General parameters

    Power supply: PAWAL 12V ~ 24V AC / DC (± 15%)
    Consumption: 125 mA / 12V DC
    Operating temperature: -40 ° C ~ + 74 ° C
    Storage temperature: -55 ° C ~ + 85C
    Relative humidity: 95% (non-condensing)
    MTBF: 100,000 hours
    Dimensions: 41 x 106 x 84 mm
    Weight: 230g