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Black Box SFP transceiver module with LC connector, metallic finish

Black Box Corporation

Black Box SFP 155 Mbps 1310 nm Extended Diagnostics Multimode 2 km LC

SKU CH-7XQ3-HD3XX

A 155 Mbps multimode fiber transceiver with extended diagnostics reporting temperature, power, voltage and bias current over 2 km at 1310 nm

  • Device TypeTransceiver
  • 155 Mbps data rate supports Fast Ethernet and ATM networks
  • 1310 nm wavelength operates over multimode fibre up to 2 km
  • Extended diagnostics report temperature, power, voltage and bias current
  • Hot-pluggable SFP interface allows module changes without network downtime
  • Compatible with standard SFP slots on most network devices

Black Box 155 Mbps SFP Transceiver

This 155 Mbps SFP transceiver supports Fast Ethernet and ATM links over multimode fibre. It operates at a 1310 nm wavelength and reaches distances up to 2 km using an LC connector. The module is designed for network administrators who need reliable fibre connectivity in enterprise or campus environments. Hot-pluggable operation allows insertion or removal without powering down the host equipment.

Hot-pluggable design and diagnostics

The transceiver draws power directly from the host SFP slot and requires no external supply. Extended diagnostics continuously report temperature, TX and RX optical power, voltage and bias current through the standard management interface. This telemetry helps operators verify link health and plan maintenance without specialised test gear. Basic link data such as fibre length, wavelength and bit rate is also available on demand.

Sustained link monitoring in service

During continuous operation the module maintains its reported optical parameters so that monitoring systems can track gradual drift in power or temperature. The diagnostic data remains accessible while traffic passes, enabling long-term trend analysis rather than only momentary spot checks. Compatibility with most SFP-equipped network devices simplifies deployment across mixed-vendor infrastructure.

Highlights

  • 155 Mbps data rate supports Fast Ethernet and ATM networks
  • 1310 nm wavelength operates over multimode fibre up to 2 km
  • Extended diagnostics report temperature, power, voltage and bias current
  • Hot-pluggable SFP interface allows module changes without network downtime
  • Compatible with standard SFP slots on most network devices

Specifications

BrandBLACK BOX NETWORK SRV
Device TypeTransceiver

Questions about this item

How is the SFP installed and what step is often missed?

Insert the module into an SFP slot until it clicks, then connect the LC duplex fiber; the step often missed is verifying the link status LEDs and diagnostic registers to confirm the 155 Mbps 1310 nm link is established before putting the port into production.

What maintenance or replacement will this transceiver need later?

No scheduled maintenance is required; replace the module only if the extended diagnostics report sustained temperature excursions, declining TX/RX optical power, voltage drift, or rising bias current that exceed the switch alarm thresholds.

What limit appears first under sustained use?

The 2 km reach on multimode fiber at 155 Mbps 1310 nm is the primary limit; extended diagnostics will flag optical power budget exhaustion or temperature rise before the transceiver itself fails.

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