Innolight TR-PX85S-NCS Compatible 10GBASE-SR SFP+ Transceiver

The Innolight TR-PX85S-NCS is a 10GBASE-SR SFP+ transceiver originally built by Innolight, a major Chinese optics manufacturer that ships in volume to hyperscalers and Tier-1 network equipment vendors. The -NCS suffix denotes a Cisco NCS-coded EEPROM variant, typically deployed in Cisco Network Convergence System chassis such as NCS 540 and NCS 5500 line cards that use SFP+ service ports. EdgeOptic's compatible version mirrors the original optical parameters and is programmed with Cisco-recognized vendor data, so NX-OS and IOS XR accept the module without the service unsupported-transceiver workaround.

Optical design follows IEEE 802.3ae Clause 52 for short-reach multimode. An 850 nm VCSEL transmitter pairs with a PIN photodiode receiver, delivering a minimum link budget of 6.1 dB. That budget supports 300 m on OM3 and 400 m on OM4 fiber, with OM2 reach limited to roughly 82 m due to higher modal dispersion. The dual LC interface, SFF-8432 form factor, commercial 0 to 70 °C operating range, and full DDM/DOM diagnostics per SFF-8472 allow network operators to monitor Tx power, Rx power, laser bias, and case temperature through the standard two-wire interface. Typical launch power sits between -7.3 dBm and -1 dBm, with receiver sensitivity rated to -9.9 dBm, providing margin for aged MMF plant and patch-panel losses in structured cabling runs.

Operators building Cisco NCS aggregation nodes typically mix TR-PX85S-NCS with Innolight LR SFP+ for longer spans; both share the same SFF-8432 cage footprint and DDM protocol, which simplifies monitoring policy on management platforms such as Cisco Crosswork. When commissioning a new line card, verify the launch power in the show controllers transceiver output matches the spec sheet before handing the circuit to operations, and confirm the fiber grade at both ends to prevent marginal links when MMF runs approach the 300 m OM3 ceiling. For custom EEPROM coding targeting a specific NCS software train, or volumes above 50 units with lead-time commitments, contact our sales team with the target platform and software version and we will confirm the coding profile before shipment.