User's Manual
Table Of Contents
- 1. Getting started
- 2. Introduction
- 3. Preparation
- 4. About the terminal
- 5. Mounting and installing the terminal
- 6. Connecting to the terminal
- 7. Managing the terminal
- 8. Configuring the terminal
- 9. Configuring the traffic interfaces
- 10. Cross Connections
- Embedded cross connect switch
- The Cross Connections application
- The Cross Connections system requirements
- Installing the Cross Connections application
- Opening the Cross Connections application
- The Cross Connections page
- Setting the terminal's address
- Management and user ethernet capacity
- Setting card types
- Getting cross connection configuration from the terminals
- Creating cross connections
- Sending cross connection configuration to the terminals
- Saving cross connection configurations
- Using existing cross connection configurations
- Printing the cross connection configuration
- Deleting cross connections
- Configuring the traffic cross connections
- Cross connection example
- Symmetrical Connection Wizard
- 11. Protected terminals
- 12. In-service commissioning
- What you will need
- Checking the antenna polarization
- Visually aligning antennas
- Accurately aligning the antennas
- Synchronizing the terminals
- Checking performance
- Checking the receive input level
- Checking the fade margin
- Checking long-term BER
- Bit Error Rate tests
- Additional tests
- Checking the link performance
- Viewing a summary of the link performance
- What you will need
- 13. Maintenance
- 14. Troubleshooting
- 15. Interface connections
- 16. Alarm types and sources
- 17. Country specific settings
- 18. Specifications
- Ethernet interface
- QJET Quad E1 / T1 interface
- Q4EM Quad 4 wire E&M interface
- DFXO Dual foreign exchange office interface
- DFXS Dual foreign exchange subscriber interface
- QV24 Quad V.24 asynchronous data interface
- HSS Single high speed synchronous data interface
- External alarm interfaces
- Auxiliary interfaces
- AC Power supply
- DC Power supply
- Power consumption
- MHSB protection
- Ethernet interface
- 19. Product end of life
- 20. Abbreviations
- 21. Acknowledgments and licensing
- 22. Commissioning Forms
- 23. Index
Troubleshooting | 204
Identifying causes of alarms
The following are possible causes of an alarm.
LED Colour Possible causes
OK Orange A minor system alarm is set
Red A major system alarm is set
RX Orange Low RSSI or AGC limits have been exceeded
Red Receiver power supply or synthesizer failure
TX Orange AGC, transmitter temperature, forward power or reverse power limits have
been exceeded
Red Transmit power supply or synthesizer failure
OK LED
Colour Alarm condition Suggested action
Orange Fan failure Check that the fans are not blocked and can spin freely.
Orange Interface card
mismatch
Using SuperVisor, check that the expected interface card and the
fitted interface card are the same.
Red Modem lock A modem lock alarm is generally seen when other conditions such
as low RSSI are present. If there are no other alarms indicated,
check the following:
The terminal clocking is set up correctly.
Both terminals are using the same modulation.
Both terminals are using the same version of software.
External RF Interference from equipment operating in adjacent
channels.
Check the constellation pattern for evidence of disturbances in the
RF path.
Compare RSSI with the expected values from the original path
engineering calculation. Investigate any large differences.
If the fault persists, contact your local representative.
Red Interface alarms Check that the E1 or Ethernet interface cables are fitted correctly
and the equipment they are connected to is functioning correctly.