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Perle CM-100MM-S2ST40 fiber media converter module with dual ST ports

Perle

Perle CM-100MM-S2ST40 100BASE-FX 1310nm ST 2 km to 100Base-EX 1310nm ST 40 km

SKU CH-FJS3-4J42P

A managed Fast Ethernet fibre-to-fibre converter module linking 100BASE-FX multimode at 2 km to 100Base-EX single-mode at 40 km

  • TypeData & Communication
  • Converts multimode to single-mode fiber at 100 Mbps
  • Extends reach from 2 km up to 40 km
  • Uses 1310 nm wavelength on both fiber links
  • ST connectors on both ports for simple patching
  • Managed or unmanaged operation modes supported

Media Converter Module

The Perle CM-100MM-S2ST40 is a managed Fast Ethernet fiber-to-fiber converter module designed for network engineers extending legacy 100 Mbps links. It bridges multimode and single-mode infrastructure in campus or metro environments. ||

Distance Limits

The multimode 100BASE-FX port reaches 2 km or 1.2 miles at 1310 nm over ST connectors. The single-mode 100Base-EX port extends to 40 km or 24.9 miles at the same wavelength, defining the practical span for this conversion. ||

Upgrade Path

This module replaces a pair of separate transceivers or an unmanaged converter by combining both media types in one managed unit. The jump is worth it when a link must cross the multimode distance ceiling and centralized SNMP oversight is required.

Highlights

  • Converts multimode to single-mode fiber at 100 Mbps
  • Extends reach from 2 km up to 40 km
  • Uses 1310 nm wavelength on both fiber links
  • ST connectors on both ports for simple patching
  • Managed or unmanaged operation modes supported

Specifications

BrandPERLE SYSTEMS
TypeData & Communication

Questions about this item

Should I choose the 2 km multimode or 40 km single-mode side for my link?

Pick the 2 km multimode side when connecting to a 100BASE-FX 1310 nm ST multimode segment, and the 40 km single-mode side when connecting to a 100BASE-EX 1310 nm ST single-mode segment; the module bridges the two automatically.

What does 100BASE-FX to 100BASE-EX conversion actually give me in a live network?

It extends a 100 Mbps Fast Ethernet link from a 2 km multimode fibre run to a 40 km single-mode fibre run at the same 1310 nm wavelength, keeping full duplex operation without re-configuring end devices.

How does the ST connector and 1310 nm wavelength limit the distances I can run?

The ST connectors lock the module to 100BASE-FX multimode at 2 km and 100BASE-EX single-mode at 40 km; the 1310 nm optics on both sides enforce those exact reach figures.

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