Cabletron Systems SEH-22 - Manual (Page 48)

APPENDIX A: EPIM INFORMATION
A-4 SEH USER’S GUIDE
Note : The transmitter power levels given above are Peak Power Levels
after optical overshoot. You must use a Peak Power Meter to correctly
compare the values given above to those measured on any particular port.
If you are measuring power levels with an Average Power Meter, add 3
dBm to the average power measurement to correctly 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
Receive
Sensitivity
dBm
Less Power More Power
-40 -35 -30 -25 -20 -15 -10 -5 0
Maximum
Receive
Input Power
Transmitter Power*
(At 25 ° C into
8.3/125 µ m fiber)
Minimum Sensitivity (-30.0)
Typical Sensitivity (-31.0)
Maximum Sensitivity (-36.0)
Maximum Receive Input (-6.99)
Typical Receive Input (-7.5)
Minimum Receive Input (-9.72)
Maximum Transmit Power (-12.0)
Typical Transmit Power (-15.5)
Minimum Transmit Power (-21.0)
* Transmit Power Typical Power Minimum Power Maximum Power
Coefficient
(See Note Below)-0.15dBm/
° C -0.12 dBm/ ° C-0.18 dBm/ ° C
SEH Book Page 4 Tuesday, March 19, 1996 4:12 PM