Technical Manual
Table Of Contents
- Table of Contents
- Product Specifications
- Warnings, Cautions, and Notes
- Introduction
- Commissioning
- Tools Required
- Connect to the Main Board
- Commission the DCU
- Installer Commands
- Global Commands
- Administrator Commands (for an LTE Backhaul)
- Alarm Menu
- Manufacturing Menu
- MTU Menu
- Transceiver Menu
- Records Menu
- Power Supply Debug Menu
- Transceiver Debug Menu
- Advanced Menu
- Global Navigation Satellite System (GNSS) Menu
- Maintenance
- Troubleshooting
- Testing the DCU
- Local Menu “WALL” Command Information
- DCU-Generated Headend Messages
- Index
OperationsTOC.fm)
D C U M a i n t e n a n c e a n d O p e r a t i o n M a n u a l iii
Table of Contents
Global Positioning System (GPS) Card . . . . . . . . . . . . . . . . . . . . . 48
Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Transceiver Board (T-Board) . . . . . . . . . . . . . . . . . . . . . . . . . 49
Power Supply Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Appendix A: Testing the DCU 53
DCU Antenna Pattern Test. . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Baseline Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Field Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Interferer Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Calibrating the DCU’s RSSI Measurement . . . . . . . . . . . . . . . . . . . . 56
Testing the Coax and Antenna . . . . . . . . . . . . . . . . . . . . . . . . . 57
RF Sweeps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Return Loss on the Coaxial Cable . . . . . . . . . . . . . . . . . . . . . . 57
Distance to Fault (Coaxial Cable). . . . . . . . . . . . . . . . . . . . . . 57
Coaxial Cable Insertion Loss . . . . . . . . . . . . . . . . . . . . . . . . 57
Return Loss (Antenna System) . . . . . . . . . . . . . . . . . . . . . . . 58
Test Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Spectrum Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Measuring Earth Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Testing the Backhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Functional Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Performance Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Appendix B: Local Menu “WALL” Command Information 61
Appendix C: DCU-Generated Headend Messages 73