Nortel Networks 8672ATMM manual LEDs

42MDA and LED specifications

Table 4

OC-3c/STM-1 MDA specifications: 8672ATME and 8672ATMM modules (cont’d.)

Parameter	SMF description	MMF description
Distance	15 km	2 km
Input power	40 W	40 W
Thermal rating	138 BTU/hour maximum	138 BTU/hour maximum

The OC-12c/STM-4 MDA uses SONET STS-3c/SDH STM-1 1300 nm optical transceivers with duplex SC-type fiber-optic connectors and either single mode fiber (SMF) or multimode fiber (MMF) cabling. The following table describes the OC-12c/STM-4 MDA specifications.

Table 5

OC-12c/STM-4 MDA specifications: 8672ATME and 8672ATMM modules

Parameter	SMF description	MMF description
Physical media	9/125 ∝m	62.5/125 ∝m
Line code	NRZ	NRZ
Wavelength	1274 to 1356 nm	1274 to 1356 nm
Average transmit output power	-8 to -15 dBm	-14 to -20 dBm
Average receiver sensitivity	-8 to -28 dBm	-14 to -26 dBm
Distance	15 km	500 m
Input power	40 W	40 W
Thermal rating	138 BTU/hour maximum	138 BTU/hour maximum

The DS-3 MDA uses a 75 ohm coaxial cable. The following table describes the DS-3 MDA specifications.

Table 6

DS-3 MDA specifications: 8672ATME and 8672ATMM modules

Parameter

Line rate

Impedence

Maximum length

Specification

44 736 Mbit/s (20 ppm)

75 ohms

450 feet (135 m)

LEDs

The MDAs have two bicolor LEDs on each port: one marked as TX (transmit) and the other as RX (receive).The following table describes the MDA LED indications.

Nortel Ethernet Routing Switch 8600

Installation — Media Dependent Adapters for the 8672ATME and 8672ATMM Modules

NN46205-316 01.01 Standard

30 May 2008

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