Singlemode Fiber Optic Power Monitors
Through software*, you can read the input and output power levels of the singlemode fiber optic port on the access line cards with diagnostic capabilities.
Input Power Level
The accuracy of the input power monitor is ± 1 dBm from -28 dBm to -12 dBm. The accuracy is ± 2 dBm from -31 dBm to -29 dBm. The monitor is unresponsive below -31dBm. If there are no cables connected to the fiber port, the software may display a reading of -40 dBm. The access line card peaks at - 12 dBm and reaches saturation at -7 dBm.
The singlemode long haul (R231-17) and extended long haul (R231-1J) ports are operational down to -34 dBm, which is too low for the monitor to measure. If the input power level is between -34 dBm and -29 dBm, a valid link will be established, however, the light level displayed by the software will show a reading of -40 dBm. This reading is not a failure indication; it simply means the level is beyond the range of the power monitor.
| | | Input Power Monitor | |
| | | | | |
| | Operational | Accurate | | |
| Model # | Monitoring | Trap Thresholds | Failure Reading |
| Range |
| | Range | | |
| | | | |
| | | | | |
| R231-14 | -29 to -7dBm | -28 to -12dBm | -28dBm and -7dBm | -31dBm |
| R231-16 |
| | | | |
| | | | | |
| R231-17 | -34 to -7dBm | -31 to-12dBm | -31dBm and -7dBm | -40dBm |
| R231-1J |
| | | | |
| | | | | |
Output Power Level
The accuracy of the output power monitor is ± 3dBm. Failure readings indicate that the card is non-functional and must be replaced. If there are no cables connected to the fiber port, the software may display readings that indicate failure.
Output Power Monitor
| Model # | Operational | Typical | Trap Thresholds | Failure Reading |
| Range | Reading |
| | | |
| | | | | |
| R231-14 | -15 to -8dBm | -11dBm | -15dBm and -7dBm | -18dBm or -3dBm |
| R231-16 |
| | | | |
| | | | | |
| R231-17 | -5 to 0dBm | -3dBm | -6dBm and 0dBm | -9dBm or +3dBm |
| R231-1J |
| | | | |
| | | | | |
*Refer to the Command Line Interface Reference Guide, NetBeacon Element Management Software Installation & User Guide or WebBeacon Management Software Installation & User Guide for software management information.
