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STM-1 Fiber Converter
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STM-1 Fiber Converter

SPD-E1-D-20-131AS 48v front panel fiber modem.JPGProduct Impression:

  1. Manufacturer: SOPTO

  2. Latest Price: Contact our customer services NOW!

  3. Data Rate: 155.52 Mbit/s ± 20 ppm

  4. Wavelength: 850nm/1310nm/1550nm for option

  5. Fiber Types: Single mode, Multi-mode

  6. UTP Cable: UTP category 3, 4, 5, 5e cable

  7. Color: White/Grey

  8. Line Code: CMI

  9. Fiber core number: double core/single core for option

  10. Fiber Connector Type: SC, FC or ST, optional

  11. Interface Type: RJ45, fiber

  12. Electrical Connector: 75 Ohm BNC type

  13. Transmission Mode: Half duplex or full duplex

  14. Transmission Distance: 2km, 20km, 40km, 60km or customer specified

  15. Sending Consumption:-12 dBm (1310nm) / -5 dBm (1550nm)

  16. Receiving Sensitivity: -36 dBm (1310nm) / -38 dBm (1550nm)

  17. Storage Temperature: -40°C ~ 85°C

  18. Operating Temperature: -40°C ~ 70°C

  19. Operating Humidity: 0%~90% RH no condensing

  20. Storage Humidity: 5%~90% RH no condensing

  21. Dimensions: 205(D) X136 (W)X42(H)mm

  22. Weight: 0.3kg, net weight 0.18kg

  23. Power: 48V/110V/220V

  24. Power Consumption: <3W

  25. Manageable or Unmanageable: Manageable or unmanageable are both available

  26. Application: Point to point applications/ Asynchronous application

  27. Browse the Evaluation:  Click here to browse


Performance Feature:

  1. Low cost

  2. Connects legacy STM-1/OC-3 electrical equipment to modern fiber equipment

  3. Transparent clear channel operation for unframed or framed signals

  4. Choice of multimode and single mode fiber interfaces

  5. Easy to install & maintain

  6. External alarm relay port

  7. Compact modem style unit, built to European standards

  8. Rack mounting kits for 2 or 18 units available

  9. Quad option available with 4 units in a 1U box

  10. Provide 2 types of loop-back function including Electrical interface loop to remote and Optical interface loop to local

  11. High reliability, comply with ITU-T G.703 and G.957

  12. Single Fiber Bi-Directional is selectable

  13. State-of-the-art design, ensure normal working under different environment.

  14. Suitable for SDH and ATM 155.52 Mbps interface interconnection.

  15. Simple operation and maintenance

  16. Compact design and low power consumption.


Note: Part in order to prevail in kind. Please contact customer service before buying.


Quality Certification:

  1. Good Anti-electromagnetic interference (EMI)

  2. Good Electromagnetic compatibility (EMC) which is in accordance with FCC Part15.

  3. Meets ISO9001, TUV, CE, FCC, CAS, UL and RoHS certificates



  1. Advanced dust-free workshop

  2. Experienced technicians

  3. Mature production technology

  4. Standard production process


Information you want to know more:

  1. Reachable Continents: Asia, Europe, Oceania, Africa, the Americas

  2. Arrival Date: 5 to 7 days

  3. Selectable Logistics: FedEx, DHL, TNT, UPS or EMS

  4. Payment Methods: L/C, T/T, Western Union, HSBC, Paypal as well as Cash Payment

  5. Warranty: 1-3 years

  6. Discounts, Promotions and Gifts: Please just contact our online customer services or pay attention to our website.


pay and logistics

Related Read:

  1. Payment methods

  2. Delivery guide

  3. Return & Refund

  4. Guarantee

  5. FAQ


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Introduction of STM-1 Fiber Converter


The STM-1 O/E Converter is designed to provide A and B two converters between electrical interface and optical interface of STM-1 signal. The converter features compactness, light weight, low power consumption and high reliability.

The STM-1 O/E Converter operates on 1.31µm lasers, with a typical transmission distance of 40 km over single mode optical fibers. For longer hops, 1.55µm laser sources may be selected.

Exterior power supply, all the functional blocks are integrated on a single PC board, which makes the modem compact and reliable. 220 V AC or -48 V DC power options are available by selecting an appropriate plug-in power unit.

The two converters enclosure is a standard 19” wide 1U metal box, suitable for rack mounting, or as a desk top unit.


Typical application example of STM-1 Fiber Converter


The STM-1 O/E Converter provides two converters between electrical interface and optical interface of STM-1 (155.520Mbit/s) signal of SDH or ATM network. The typical application is given below.


STM-1 fiber connection

Use SC or FC type connectors to connect the STM-1 O/E Converters to the transmission cable. Pay attention to the input and output relationship. Do not bend fiber to sharp angles to prevent damage. Do not look directly into the fiber end or the Tx connector socket for extended time, it may be harmful to the eyes.


Operation and maintenance


When all the connections are down, switch on the Converters. Observe all the alarm LED’s for any possible installation errors. Check the output optical power using an optical power meter. The reading should be within specification.

Measure the optical power at the receiver end. Make sure that the power level is between the maximum allowable input power and sensitivity given in the specification. It is preferred to leave a margin of few dB’s for stable operation.

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This worked great,Great product and great price.