10G SFP+ LRM Optical Transceiver Module
Product Overview
The Apex 10G SFP+ LRM module delivers 10GBASE-LRM over the multimode fiber that is already installed in a building. A 1310nm transmitter works into an electronically dispersion compensated receiver, which is what allows 10G to run up to 220m on older OM1 and OM2 multimode, not just on the OM3 and OM4 grades the SR interface expects.
That matters in buildings where the riser cable was pulled for Fast Ethernet or Gigabit and cannot be replaced. SR needs a launch condition that legacy multimode cannot provide; LRM was written for exactly this case, and it also works over OM3 and OM4, so one part number covers a mixed campus.
The module is hot pluggable, uses duplex LC, reports live readings through DDM and is coded for the switch, router or media converter you name. Where the same building has single mode links, the 10km LR grade is available from the same line, and we can help decide per link which of the two to fit.
Key Features
- 9.95Gbps to 10.3Gbps line rate compliant with 10GBASE-LRM
- 1310nm transmitter with electronic dispersion compensation receiver
- Up to 220m over OM1, OM2 and OM3 multimode fiber
- Also operates over OM4 and OM5 multimode at 10G
- SFP+ MSA hot pluggable package, duplex LC interface
- Digital Diagnostic Monitoring (DDM/DOM) with live optical readings
- Lets 10G run on legacy riser cable without a fiber upgrade
- RoHS compliant, low power consumption, coded for your platform
Technical Specifications
| Specification | Detail |
|---|
| Part Number | APX-SFP-10G-220M-LRM |
| Manufacturer | Apex |
| Data Rate | 9.95Gbps to 10.3Gbps |
| Form Factor | SFP+, hot pluggable |
| Standard | 10GBASE-LRM |
| Wavelength | 1310nm |
| Maximum Reach | 220m over OM1, OM2 and OM3 multimode |
| Fiber Type | Multimode Fiber (MMF), also single mode on LR grade |
| Connector Type | LC duplex |
| Receiver | PIN with electronic dispersion compensation |
| DDM / DOM | Supported |
| Supply Voltage | 3.3V |
| Compliance | SFP+ MSA, IEEE 802.3aq, RoHS |
| Temperature | 0 to 70C commercial, -40 to 85C industrial on request |
Applications
Legacy Riser and Campus Upgrades
Raises an existing OM1 or OM2 backbone from 1G to 10G without pulling new cable in the risers.
Mixed Multimode Estates
Covers OM1, OM2, OM3 and OM4 runs with one part number, which simplifies spares in buildings wired over several generations.
Floor and Cabinet Distribution
Provides 10G to distribution cabinets and equipment rooms where the run is short but the installed multimode will not support the SR grade.
Compatibility
10G LRM modules are coded to the switch, router or media converter you name and tested on live ports before shipment. Reach depends on the fiber grade and on the connector and patch cord quality, so we ask for the fiber type and the measured span, then confirm whether LRM or LR is the right part for each link.
Related Products
Frequently Asked Questions
What is the reach of a 10G LRM module?
220m over installed OM1, OM2 and OM3 multimode fiber, which is the case 10GBASE-LRM was written for. It also runs over OM4 where the span is inside that budget.
Should I use LRM or SR in a legacy building?
If the multimode is OM1 or OM2, LRM is the part that will come up at 220m. SR is designed for OM3 and OM4 launch conditions and will not close the link on older cable.
Does LRM work on single mode fiber?
No. LRM is a multimode interface. For single mode runs use the 10km LR or 40km ER grade from the same line.
Is LRM still supported by switches?
Yes. The port is part of the 802.3aq standard and is still offered on switches and routers used in enterprise and campus networks. We code each module for the host platform you name.
Why Choose Apex
- Optical engineering support and supply from 1.25G to 800G, including multimode and single mode 10G grades.
- Fiber type and span checked per link before the order is released.
- Every module is tested for optical power and error rate before shipment.
- Backed by a 3 year warranty and technical support before and after the sale.
