Meridian Technologies DR-1A1C2K/2K-5 DigiFlex Laser-Based Single-Mode Receiver (1,310/1,550 nm) with ST Optical Connector

Meridian Technologies DR-1A1C2K/2K-5 DigiFlex Laser-Based Single-Mode Receiver (1,310/1,550 nm) with ST Optical Connector

Meridian Technologies DR-1A1C2K/2K-5 DigiFlex Laser-Based Single-Mode Receiver (1,310/1,550 nm) with ST Optical Connector


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Meridian Technologies DR-1A1C2K/2K-5ST overview

  • 1Description

The Meridian Technologies DR-1A1C2K/2K-5 DigiFlex Laser-Based Single-Mode Receiver with ST Optical Connector incorporates digital encoding technology. This fiber optic module receives one unidirectional 24-bit audio, one unidirectional contact closure, and two bi-directional RS-485 data channels over a multimode fiber.

It incorporates plug-in personality signal cards to easily configure a wide variety of module types. The functionality of this DT/DR-1A1C2K/2K Series Receiver is enhanced by its compatibility with Meridian’s PC-based SpectraSmart Network Management & Diagnostic Software system. SpectraSmart supervises the operating parameters of the transmission system such as the status on video levels, sync, digital carrier detect, voltages, temperatures, optical levels, etc.

The receiver is available with rack mount cards and modules that can be installed in Meridian’s card chassis, desk chaises, and 19” racking frames (sold separately). This system can be configured in either star (module to rack) or trunking (rack to rack) configurations. It can also be made a standalone system by using the SR-1000/s 2-slot desk / wall mount chassis (87 to 264VAC; sold separately).


Receives one unidirectional 24-bit audio, one unidirectional contact closure, and two bidirectional RS-485 data channels
Real time audio / contact closure
Contact closure with 24-bit audio
Meets RS-250C short haul transmission specifications
Wide Optical Dynamic Range: Eliminates the need for optical attenuators
Laser-based systems for single mode
SMT (Surface Mount Technology) for high reliability and repeatability
SpectraSmart Network Management compatible
Local LED status indicators to monitor critical system diagnostics for performance parameters
ST, FC optical connector
Hot swappable cards
Laser back biased photo detector circuitry for stable optical output over full temperature range
Meets EIA RS-170 and RS-343A formats
DB 9-type connector for audio
HD 15-pin connector for contact closure
Markets: Access control, security and surveillance, ITS (Intelligent Transportation Systems)
In the Box
Meridian Technologies DR-1A1C2K/2K-5 DigiFlex Laser-Based Single-Mode Receiver (1,310/1,550 nm) with ST Optical Connector
  • Limited 10-Year Warranty
  • Table of Contents
    • 1Description

    Meridian Technologies DR-1A1C2K/2K-5ST specs

    Formats RS-485
    Rate DC to 1 Mb/s
    Bit Error Rate 10-9

    Measured at maximum optical budget

    Contact Closure
    Formats Contact closure
    Contact Rating: 0.3 A, 30 VAC/DC
    Bounce Time: 5 ms
    Rate CC: 10 Hz
    Bit Error Rate 10-9


    Measured at maximum optical budget

    I/O Impedance 600 Ω (Balanced / unbalanced)
    Frequency Response 10 Hz to 20 kHz
    SNR >90 dB (Weighted) @ 1 kHz
    Input / Output Level -8 to +8 dBm (4 Vpp maximum; +18 dBm available on request)
    Total Harmonic Distortion <0.01% @ 1 kHz
    Resolution 24 bit
    Optical ST, FC
    Power Using the SR-1000 Desk / Wall Mount Chassis with Power Supply (sold separately)
    Audio DB9 female
    Contacts HD 15-pin female
    Card 8 W

    Due to variations in drivers and diagnostic options, power shown at maximum value

    Fiber type Single Mode (FP Laser): 9 / 125 µm
    Data Rate Fiber: 250 Mb/s
    Receiver Sensitivity -24 dBm
    Optical Output -3 dBm
    Optical Budget 21 dB
    Wavelength 1,310 / 1,550 nm
    Optical Connector with ST Optical Connector
    Dynamic Range Optical: 24 dB
    MTBF >240,000 hours @ Ground Fix
    35°C per MIL217F
    Operating Temperature -29.2 to 165.2°F (-34 to +74°C)
    Storage Temperature -67 to 185°F (-55 to +85°C)
    Relative Humidity 0 to 95% non-condensing
    Number of Slots 2
    LED Indicators Power On: 1x Green
    TX Carrier/ Laser Over Current: 1x Bi-color
    RX Carrier - Present / Error: 1x Bi-color
    RX optical signal - Present / Absent: 1x Bi-color
    Transmit / Receive Contact Closure: 1x Green
    Audio Present: 1x Green
    Audio Overload: 1x Red
    Dimensions (L x W x H) Card: 6.3 x 4.0 x 1.7" (160.0 x 100.0 x 44.0 mm)
    Weight Card: 16 oz (450 g)
    Packaging Info
    Package Weight 2.0 lb
    Box Dimensions (LxWxH) 10.0 x 7.0 x 3.0"

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