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304152 - 4152 High Speed Fiber to Multi-Point RS485/422/232 Interface Converter

    to Multi-Point RS485/422/232 Interface Converter
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Base Price:
Catalog No: 304152
Model No: 4152
Conversion Type:Glass Fiber, RS232, RS422, RS485
Converter Port Connector:DB9, ST
Enclosure Configuration:Desktop
Speed:RS232: 0 to 1.5 Mbps. RS422/485: 0 to 5 Mbps
Wavelength Nano:820nm/850 nm, multimode


Shipping Terms

Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

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Model 4152 Very High Speed Ruggedized Fiber-to-Multi-Point RS485/422/232 Interface Converter

  • Ideal for RS485 Multi-Point Application

High Speed Ruggedized ST Fiber to Multi-Point RS485/422/232 Converter, Model 4152


The Model 4152 is a high speed ruggedized ST Fiber to RS485 / RS422 / RS232 interface converter.  Typical operating speeds are up to 1.5 Mbps for RS232 to fiber conversion and up to 5 Mbps for RS485/422 to fiber conversion.  When operating in RS485/422 mode, the converter can be configured for 2-wire half duplex or 4-wire full duplex operation. 

This Fiber to RS converter provides an industrial solution for applications requiring a single point-to-point or a multi-point communications link over short and long distances.  Typical applications include PC to PC long distance communications, factory automation, multi-drop data collection devices, barcode readers, time clocks, scales, data entry terminals, ATMs and serial communications in harsh environments.

The Model 4152 Fiber to Multi-Point Converter is designed to operate from -40°C to 85°C. This Fibre to RS converter features ESD protection circuitry on all receivers and transmitters for both RS232 and RS485/422 interfaces.  The power input is protected from transients and features 3kVDC isolation to prevent system ground loops.  The Model 4152 media converter can be powered from a wide input range of 10VDC-36VDC, with models also available for other voltage ranges such as 4.5VDC-9VDC and 19VDC-72VDC. 

Other features include user selectable fiber polarity, dual DB9 power connectors (board only) for convenience in bussed power applications, TX, RX and Power indicator LEDs.  The converter is available as a board only with front mounting threaded brackets for rack mounting in embedded applications, Model 4153 as well as a DIN rail mounted package, Model 4152-DIN.  Accessories include DIN rail mounting hardware and various AC input voltage power supplies. These Fiber Converters are ruggedized for commercial and military applications.

Three functions in one unit:
Fiber to RS485 Converter
Fiber to RS422 Converter
Fiber to RS232 Converter


  •  Fiber Interface:
    • Connectors: Fiber Optic ST
    • TX Power: -12.5 dBm
    • RX Sensitivity: -27.5 dBm
    • Optical Budget: 15 dB
    • Max. Link Distance with 62.5/125µm fiber:
      • 5.35 kM at up to 5 Mbps, 25°C
      • 3.75 kM at up to 5 Mbps, -40°C to 85°C
    • Wavelength: 820 nm/850 nm, multimode
    • Fiber Size: 50/125 µm, 62.5/125 µm, 100/140 µm.
  • Fiber Polarity:
    • Logical 1 = Light ON/OFF: Jumper Selectable
  • Copper Interface:
    • Connectors: DB9, Female
    • Type: RS232, RS485 (2-wire/4-wire) 
    • Terminations: RS485 120 Ohm jumper selectable
  • Bit Rate (nom.):
    • RS232: 0 to 1.5 Mbps
    • RS485/422: 0 to 5 Mbps
  • Network Configurations:
    • RS232:          Point-to-Point
    • RS485/422   Point-to-Point
                              Multi-Point (Default 280 uSec TX
                              disable time)
      (user configurable TX disable time via a single thru-hole resistor)
  • Indicators:
    • LEDs: TXD, RXD, PWR
  • Power:
    • Input Power: 10VDC-36VDC std, 4.5VDC-9VDC, 19VDC-72VDC, Other at 1.5W.
    • Isolation: 3 kVDC
    • Connectors: Dual DB9F for Power Daisy Chaining (board only), DB Power Jack (desktop unit)
  • Operating Environment:
    • -40°C to 85°C
  • Model 4152 Mechanical (Desktop Unit):
    • Model 4152, Cat No: 304152
    • Size: 5" x 4.25" x 1.4"
    • Weight: 10.1 oz (286g)
  • Model 4152-DIN Mechanical (DIN Rail Mounted Unit):
    • Model 4152-DIN, Cat No: 304152-DIN
    • Size: 5" x 4.25" x 1.4"
    • Weight: Approx. 9.8 oz (278g)
    • Mounting: 2 Threaded Holes Standard, DIN Rail
    • DIN Rail Bracket Size: 2.84" x 1.24" x 0.16"
    • DIN Rail Bracket Weight: 0.9 oz (25.5g) 
  • Model 4153 Mechanical (Board Only):
    • Model 4153, Cat No 304153 
    • Size: 4.8" x 3.9" x 0.63"
    • Weight: 3.5 oz (99g)
    • Mounting: Mounting Holes, Rt Angle Brackets  

Very High Speed Rugged ST Fiber to Multi-Point RS485/422/232 Converter App Note 

High Speed Rugged ST Fiber to Multi-point RS485/422/232 Converter App Note, Model 4152

Very High Speed Rugged ST Fiber to Multi-point RS485/422/232 Converter App Note, Model 4152

 High Speed Rugged ST Fiber to Multi-point RS485/422/232 Converter App Note, Model 4152

To view more of Electro Standards' Media Converters, click here: Interface Converters.

Electro Standards can supply all your Network Cable requirements. Click here to reach our Cables/Connectors/Adapters Webpage.

For custom network interface converters call our friendly customer support staff at 401-943-1164, email eslab@electrostandards.com, or complete our online Custom Product Request form.

 All data switches, fiber optic inferface converters, data communication products, and data acquisition products are subject to a one year warranty against manufacturing defects.  The limit of ESL liability is limited to the cost of the ESL product provided.

*Prices of Fiber Optic Converters online are subject to change and verification.
All ESL Fiber to RS485 Converters, Fiber to RS422 Converters and Fiber to RS232 Converters are available for export.


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