Cabletron Systems NBR-420 - Manual (Page 60)

Appendix B: EPIM Specifications
Page B-4 NBR-SERIES Installation Guide
The transmitter power levels given above are Peak Power Levels after
optical overshoot. Use a Peak Power Meter to compare the values given
above to those measured on any particular port. To measure power levels
with an Average Power Meter, add 3 dBm to the average power
measurement to compare the average power values measured to the
values listed above (i.e., -33.5 dBm average + 3 dBm = -30.5 dBm peak).
Parameter Typical Minimum Maximum
Transmitter Peak
Wave Length
1300 nm 1270 nm 1330 nm
Spectral Width 60 nm - 100 nm
Rise Time 3.0 ns 2.7 ns 5.0 ns
Fall Time 2.5 ns 2.2 ns 5.0 ns
Duty Cycle 50.1% 49.6% 50.7%
Bit Error Rate Better than 10 -10