Руководство По Установке для Cisco Cisco Prisma II EDR Receiver
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Introduction
78-748704-01 Rev C
Processor Front Panel,
Continued
Optical Receiver
The processor houses two optical receivers that are independent. Each optical
receiver detects an independent high-speed 2.5 Gbps optical signal and converts it to
a PECL differential bit stream. This signal is then sent to the receive processor.
The optical receivers incorporate a single bicolor LED. The LED is an indicator of
The optical receivers incorporate a single bicolor LED. The LED is an indicator of
optical input and DC power presence to the optical receiver.
The bicolor LED status is shown in the table below.
The bicolor LED status is shown in the table below.
Condition
LED Status/Color
DC Power OFF/Optical Input OFF
Off
DC Power ON/ Optical Input OFF
Red
DC Power ON/Optical Input ON*
Green
DC Power OFF/Optical Input ON
Off
* Input light must be modulated. The LED may illuminate red even in the presence
of CW light.