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EXNET-ONE LEDs

Overview

This section covers the LEDs on the EXNET-ONE card.

Signal Detect LED

The Signal Detect LED indicates the detection of a signal from the fiber optic cable. During initialization the LED flashes red and then turns green once a signal is detected and an EXNET® connection is established.

Important! The Signal Detect LED indicates only whether a fiber connection to the specific EXNET-ONE card exists, not whether the EXNET® ring is in service.

Allow approximately 10 seconds for the Signal Detect LED to turn green after a signal has been detected. The LED turns red if:

• The cable is damaged or removed from EXNET® port.

• The EXNET® port on the remote end of the cable is placed in loopback mode.

Fault Detect LED

The Fault Detect LED indicates the status of the EXNET® port.

If a signal loss is detected (indicated when the Signal Detect LED turns red), the port is put in loopback mode by the software (if loaded) and the LED turns red.

The Fault Detect LED turns red during power up and initialization. After the ring is configured and brought in service, the LED turns green as each node connects to the ring.

Quick-Reference LED Table

Signal Detect and Fault Detect LEDs describes the Signal Detect and Fault Detect LEDs.

Table 5-1 Signal Detect and Fault Detect LEDs

System Status | LEDs | Color
--- | --- | ---
Before Software Download | Signal Detect | Green
Fault Detect | Green
After Software Download | Signal Detect | Green
Fault Detect | Red
After Ring Configuration | Signal Detect | Green
Fault Detect | Green
Node Fault/Out of Service | Signal Detect | Green
Fault Detect | Red

Excel's open architecture, proprietary, 1.3 Gbps fiber optic network using a packet-based protocol.