Chapter 4. Using the Front Panel
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For these LEDs... | This color light... | Indicates that... |
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Power | Green | The unit is on. |
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| Off | The unit is off. |
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Ethernet | Green (solid) | Physical link is up. |
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| Green (flashing) | Indicates activity on the LAN. |
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| Off | Physical link is down - no Ethernet connection. |
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Remote | Yellow | Indicates a user is logged in the system via Control/ |
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| Craft port or via Ethernet. |
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| Off | No one is logged into the system. |
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System | Green (solid) | No diagnosed system faults were found. |
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| Green (fast blink) | Flash download is in progress. |
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| Yellow (solid) | A fault was diagnosed, but the condition no longer |
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| exists. The condition will be recorded in the system |
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| log. |
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| Red (solid) | An error condition with either the power supply or the |
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| temperature is present. |
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| Red (fast blink) | A fatal error occurred during flash download. |
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| Off | Power is not currently supplied to the system. |
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Network Module | OK (green) | The network interface is operating normally with error- |
Status |
| free operation. If the interface experiences alarms, the |
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| OK LED remains off. |
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| Test (yellow) | The interface is operating in a test mode. This includes |
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| a |
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| illuminated, this LED also indicates that normal data |
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| flow is not occurring in the module ports. |
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| Error (flashing red) | Indicates an error such as BPV (bipolar violation), |
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| OOF (out of frame), or CRC (cyclic redundancy |
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| check). |
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| Alarm (red) | An alarm condition has been detected. When the |
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| alarm condition is no longer valid, the OK LED |
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| illuminates. To view an alarm condition, select the |
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| active alarm menu item. If the alarm conditions have |
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| been corrected, you can view the alarm which caused |
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| the activation of the ALARM LED in the system log. |
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ATLAS 550 User Manual |
