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What to do if the Red FAULT LED is blinking slowly on my Cisco Control Unit?
If the Red FAULT LED is blinking slowly on your Cisco Control Unit, it could be due to an improper configuration of the LCM. Verify the LCM configuration. It can also indicate real operating condition problems. Use the PC-based ViewPort software to determine what operating condition alarms exist.
How to troubleshoot 'No Frequency Found State' on Cisco Control Unit?
To troubleshoot a 'No Frequency Found State' on your Cisco Control Unit, connect a laptop computer running the ViewPort software to the local control interface USB port on the LCM. Then, use ViewPort to set the RX FREQUENCY (the downstream frequency) on which the transponder receives commands from the headend. Additionally, use a spectrum analyzer and check for a downstream carrier at the receiver test point.
General| Brand | Cisco |
|---|---|
| Model | GS7000 |
| Category | Network Hardware |
| Language | English |
Explains the meaning of various warning and caution symbols used in the document and on the product.
Provides a detailed physical and functional overview of the Cisco 1.2 GHz GS7000 Node and its components.
Outlines critical safety precautions for operating software that controls optical transmission equipment, focusing on laser hazards.
Illustrates the placement of various warning labels on the equipment for user safety and compliance.
Describes signal flow and functions of the forward path in the GS7000 Node, from headend to subscribers.
Explains signal flow and functions of the reverse path, from subscribers back to the headend via optical fiber.
Details power input and distribution within the GS7000 Node.
Describes the RF amplifier module's function and components.
Explains different types of forward configuration modules and their impact on signal routing.
Details reverse configuration modules and their function in reverse path topology.
Describes the OIB's role in module interconnections.
Explains optical receiver module function and parameters.
Describes optical analog transmitter module function for reverse path transmission.
Explains EDFA modules function, types, and parameters.
Details optical switch module function in switching EDFA inputs.
Describes local control module function for redundancy and configuration.
Explains power supply module function in converting AC to DC power.
Lists required tools and test equipment for installation.
Shows location of RF ports, fiber ports, and test points on the node housing.
Procedure for installing the GS7000 Node on a strand for aerial mounting.
Procedure for mounting the GS7000 Node onto a pedestal or wall.
Guides installation and management of fiber optic cables for the GS7000 Node.
Explains installation of RF cables and conductor trimming.
Describes how to apply AC input power, including shunt installation and voltage checks.
Lists necessary tools and test equipment for setup and operation.
Provides functional diagrams illustrating signal flow for various configurations.
Outlines steps for forward path setup, including signal measurements and adjustments.
Details reverse path setup, focusing on optical transmitter levels and connections.
Explains configuring forward signal routing with module selection.
Describes configuring reverse signal routing with module selection.
Instructions for safely opening and closing the node housing.
Schedule for visual inspections and cleaning for equipment maintenance.
Procedure for safely removing and replacing modules in the GS7000 Node.
Recommendations for cleaning optical connectors for optimal performance.
Troubleshooting steps for no RF output when receiver LED is off.
Troubleshooting steps for no RF output despite good fiber optic light levels.
Troubleshooting steps for addressing poor Carrier-to-Noise (C/N) performance.
Troubleshooting steps for resolving poor distortion performance issues.
Troubleshooting steps for addressing poor frequency response.
Troubleshooting steps for no RF output from the reverse receiver.
Provides contact info and resources for technical assistance.
Chart to determine operating levels considering linear tilt for 1.2 GHz amplifiers.
Table showing insertion loss and tilt for forward linear equalizers.
Introduces the EDR 85 System and its features for reverse path transmissions.
Describes EDR transmitter module, components, and operational modes.
Explains procedures for reverse path balancing using EDR and test signals.
Lists equipment for EDR troubleshooting and a chart for transmitter module issues.
Overview of expanded fiber tray, its features, and benefits.
Step-by-step procedure for installing the expanded fiber tray.
Discusses fiber management principles: bend radius, routing, access, protection.
Presents WDM and O-Band configurations using the expanded fiber tray.
