Black Box Async RS232/RS422/RS485 Extender Fiber Terminal Block


Black Box Async RS232/RS422/RS485 Extender Fiber Terminal Block
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Black Box Async RS232/RS422/RS485 Extender Fiber Terminal Block

ST Single-Mode - New - 1 x ST Ports - DuplexST Port - Single-mode - 21.75 Mile - Power Supply - TAA Compliant

MFG. PART: MD650A-13 UPC: 822088111030
Warranty: 3 Year Warranty
  • Product Type: Transceiver/Media Converter
  • Maximum Distance Supported: 21.7 Mile, 21.75 Mile
  • Power Source: Power Supply
  • Number of ST Ports: 1
Availablity: Backordered

MSRP: $2,035 $1,452 USD

$1452 - Add to Cart
Backorder Policy – What to expect when ordering an out of stock item.
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Extend RS232, RS422 or RS485 protocols over multimode fiber so different types of equipment can talk to one another in point to point or multipoint environments. Serial extenders work well in factory automation, building automation, and process automation where PLC's with RS232, RS422 or RS485 interfaces are used to control devices. The ability to extend the distance to their devices over fiber while also adding protection from electrical interference which can be caused by large motors which are prevalent in these environments is very beneficial.

Use fiber instead of copper to send your RS-232, RS-422, and RS-485 data?and do so without having to route it through protocol converters.

Universal Fiber Optic Line Driver Transceivers enable you to transmit and receive the signals over fiber optic cabling in both point-to-point or drop-and-repeat topologies. You can even mix protocols. For instance, you can set one transceiver to interface with an RS-232 device at one end and another to interface with an RS-485 device at the opposite end. There's no need for a converter box at either end of the fiber link!

Universal Fiber Optic Line Driver Transceivers also offer a wide range of speeds and distances?up to 21.75 miles (35 km) with the single-mode version.

Communicate signals in a point-to-point or ring topology.
Ideal for fiber applications that use different interface protocols.
Extended ambient operating range
Data-derived or RTS transmit/receive switching (RS-485)
Indicator LEDS monitor signal and power
End-to-end protocol conversion?no separate box is needed.
Speeds up to 10 Mbps for RS-422 and RS-485, 200-kbps for RS-232.

General Information

Manufacturer: Black Box Corporation
Manufacturer Part Number: MD650A-13
Manufacturer Website Address:
Brand Name: Black Box
Product Name: Async RS232/RS422/RS485 Extender Fiber Terminal Block - ST Single-Mode
Product Condition: New
Product Type: Transceiver/Media Converter


Total Number of Ports: 1
Number of ST Ports: 1
ST Port Type: Duplex

Media & Performance

Media Type Supported: Optical Fiber
Fiber Mode Supported: Single-mode
Fiber Optic Wavelength: 1310 nm
Maximum Distance Supported: 21.75 Mile

Power Description

Power Source: Power Supply
Plug/Connector Type: Terminal Block

Physical Characteristics

Height: 1.3"
Width: 3.5"
Depth: 4"


Environmentally Friendly: Yes
Environmental Certification: RoHS, WEEE
Country of Origin: United States
TAA Compliant: Yes


Limited Warranty: 3 Year
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