Home / Shop
- Description
- Specifications
GLC-BX40-U-I is a Cisco 1000BASE-BX40-U small form-factor pluggable module for 40 km single-fiber bidirectional links. It is the upstream end of a pair: it transmits in the 1260 to 1360 nm range (nominal 1310 nm) and receives in the 1480 to 1600 nm range, so it is paired with a GLC-BX40-D-I or GLC-BX40-DA-I at the far end, which transmits at 1540 to 1560 nm.
Both directions travel over one strand of standard G.652 single-mode fiber, up to 40,000 m (131,234 ft). Transmit power is -5 to +3 dBm and receive power is -25 to +3 dBm, with a maximum channel insertion loss of 19 dB. The module supports SFF-8472 digital optical monitoring, and SFP ports use LC-type connectors.
The trailing I in the part number indicates the industrial temperature version, which operates from -40 to 85 C (-40 to 185 F). That range suits outdoor cabinets, rugged switches and other installations outside climate-controlled rooms.
Related single-fiber and Fast Ethernet optics are in Cisco interface cards and transceivers, such as the GLC-FE-100LX 100BASE-LX10 SFP and the GLC-GE-100FX 100BASE-FX SFP.
| Part number | GLC-BX40-U-I |
| Standard | 1000BASE-BX40-U, single-fiber bidirectional |
| Reach | 40 km (40,000 m) |
| Fiber | single-mode, G.652 |
| Transmit wavelength | 1260 to 1360 nm (nominal 1310 nm) |
| Receive wavelength | 1480 to 1600 nm |
| Transmit power | -5 to +3 dBm |
| Receive power | -25 to +3 dBm |
| Maximum channel insertion loss | 19 dB |
| Digital optical monitoring | yes (SFF-8472) |
| Temperature range | -40 to 85 C (industrial) |
| Connector | LC-type |
| Far-end module | GLC-BX40-D-I or GLC-BX40-DA-I |