Cabletron Systems NBR-420, NBR-220, NBR-620 manual

Appendix B: EPIM Specifications

Parameter	Typical	Minimum	Maximum
Transmitter Peak	1300 nm	1270 nm	1330 nm
Wave Length
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

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).

Page B-4 NBR-SERIES Installation Guide