User guide

Summit GbX Installation and User Guide 5

SummitGbX Front View

ONG

ISTANCE

NTERFACES

Tab le 3 describes the Long Distance Interface (LDI) specifications.

Note 1:

The transmitter output power level for the SummitGbX is +1dBm. The maximum allowable

receiver input power level is -8dBm. Therefore, there is a minimum of 9dB loss required for the link

to operate error-free. This minimum required loss can be achieved using a fiber length of 40 km

(0.25 dB/km provides 10dB loss), or by adding 10dB of fixed optical attenuator at the receiver end.

1550nm Single mode

Optics

10u Single mode Fiber 100 Kilometers

Table 3:

LDI Specifications

Parameter Minimum Typical Maximum

LDI Optical Transceiver

Optical Output Power 0dBm 1dBm See Note 1

Optical ExtinctionRatio 7dB

Center Wavelength 1530nm 1550nm 1565nm

Optical Rise/Fall Time 0.5ns

LDI Optical Receiver

Optical Input Power Sensitivity -34dBm -32dBm

Optical Input Power Maximum -8dBm

Operating Wavelength 1200nm 1550nm 1600nm

Optical Return Loss 27dB

Table 2:

Media Types and Distances (continued)

Media Type Standard Media Guaranteed Distance