Black Box Fiber Drivers

Ensure Reliable Transmission Over Fiber


What's special about these fiber optic drivers?

  • High-performance drivers enable you to send RS-232 data across interference-free optical links.
  • Sends RS-232 data, at up to 76.8 kbps, from serial devices to a server over multimode fiber cable.
  • Switch-selectable DTE/DCE option, set to perform like a DTE so it can communicate with another DCE device, no special cables are needed.
  • Click for More Features

The Black Box high performance fiber drivers are powered to ensure continuous, reliable transmission over fiber. These fiber drivers enable you to send RS-232 data across interference-free optical links, transmit data at up to 76.8 kbps, and reach distances of 2.5 miles at any speed.

Part # Description Dimensions Weight Price
BB-MD940A-F Fiber Driver ST/25 Female 1" H x 2.7" W x 4.2" D 1.4 lbs
Manufacturer Direct
BB-MD940A-M Fiber Driver ST/25 Male 1" H x 2.7" W x 4.2" D 1.4 lbs
Manufacturer Direct
  • Reach distances of 2.5 miles (4 km) at any speed
  • Autosensing 110–220-VAC power supply ensures reliability and continuous transmission.
  • Coupled power variations are compensated by a range select feature.
  • Supports RS-232 async, bidirectional transmission
  • Use with multimode fiber cable
  • 1 Year Double Diamond Protection
  • Data Format Asynchronous, bidirectional
    Data Rate Transparent up to 76.8 kbps
    Distance Dependant on type of multimode cable, power budget, and loss/km; preset ranges
    Fiber Cable 850 nm multimode
    Flow Control X-ON / X-OFF
    Operation Full-duplex
    CE Approval Yes
    Interface RS-232 (DCE or DTE switch selectable)
    Connectors (2) ST®; (1) DB25 M or F
    Power 5 VDC @ 600 mA
    External: 110-220 VAC, 50-60 Hz, autosensing
    Operating Temperature 32°F to 114°F (0°C to 45°C)
    Size 1" H x 2.7" W x 4.2" D (2.5 x 6.9 x 10.7 cm)
    Weight 1.4 lbs (0.6 kg)
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    The Double Diamond Warranty is our no-questions-asked warranty that protects your BLACK BOX® brand products from accidental damage, including drops, water, and power surges. Most products come with a one- or two-year warranty. Some products, such as copper cables, manual switches, cabinets, and racks, are guaranteed for life! During the warranty period, Black Box will repair or replace your damaged equipment within one week of receipt at NO CHARGE!

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