Cabletron Systems Expansion module 9E106-06 - Manual (Page 38)

EPIMs
A-4
EPIM-C
The EPIM-C supports thin-net coaxial cabling and is equipped with an internal
Cabletron Systems TMS-3™ Transceiver. You can use the TERM switch on the
front of the EPIM-C to set the internal 50-ohm terminator. This eliminates the
need to connect the port to a tee-connector and terminator. Figure A-4 shows the
setting for the terminator switch.
Table A-3. EPIM-F3 Specifications
Parameter Typical Minimum Maximum
Transmitter Peak Wave Length 1300 nm 1270 nm 1330 nm
Spectral Width 60 nm - 100 nm
Rise Time 3.0 nsec 2.7 nsec 5.0 nsec
Fall Time 2.5 nsec 2.2 nsec 5.0 nsec
Duty Cycle 50.1% 49.6% 50.7%
Bit Error Rate Better than 10 -10
Transmitter Power decreases as temperatures rise and increases as temperatures
fall. Use the Output Power Coefficient to calculate increased or decreased power
output for your operating environment. For example, the typical power output at
25
°
C is -16.4 dBm. For a 4
°
C temperature increase, multiply the typical
coefficient (-0.15 dBm) by four and add the result to typical output power (4 x -
0.15 dBm + -16.4 = -17.0).
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 dB = -30.5 dBm peak).
NOTE