Cable Assemblies For An Nthw21; Optical Interface Characteristics For An Nthw21 - Nortel Passport 15000 Hardware Description

Cable assemblies for an NTHW21

The fiber mode type must be the same as the FP mode type. You must provide
the cable with attached connectors.
With an NTHW21 FP, use single-mode (SM) fiber cable with a core diameter
of 9 microns and a cladding diameter of 125 microns. The attenuation is less
than 0.5 dB/km at 1300 nm.
Use SM MT-RJ female (non-pinned) connectors at the FP end. Both the
transmit and the receive ports are in the same connector.
The sum of cable losses and connector losses from the FP to the far end
termination must not exceed 12 dB for SM cable. The losses in a transmission
path determine the distance the FP can send a signal. The maximum distance
from the FP to the far end is 15 to 20 km for SM cable, depending on the
losses due to splices and connectors.

Optical interface characteristics for an NTHW21

The optical interface characteristics for a 16-port OC-3/STM-1 single-mode
(SM) intermediate reach (IR) FP with MT-RJ connectors that has PEC
NTHW21 are shown in these tables:
• "General interface characteristics for an NTHW21" (page 229)
• "Transmit characteristics for an NTHW21" (page 230)
• "Receive characteristics for an NTHW21" (page 230)
Table 52
General interface characteristics for an NTHW21
General optical interface characteristics
Faceplate connector
Bit rate
Line encoding
Chapter 4 Control and function processors 229
duplex MTRJ male (pinned) transceiver
155.520 Mbit/s
binary non-return-to-zero (NRZ)
Passport 15000, 20000 Hardware Description 5.2S2