User's Manual
Table Of Contents
- EX-i Series (TDD)
- Digital Microwave Radios
- Installation and Management Guide
- Legal Notice
- Open-Source License Information
- Table of Contents
- List of Figures
- List of Tables
- About this Document
- Introduction
- Pre-installation Tasks
- Link Engineering and Site Planning
- Familiarization with the i-Series Radios
- Initial Configuration and Back-to-Back Bench Test
- RF Output Power Setting
- Time Division Duplex (TDD) Factors
- Link Orientation and Synchronization
- Radio Synchronization
- Offset Timing
- Virtual Local Area Network (VLAN)
- Link Symmetry
- Simple Network Management Protocol (SNMP)
- System Installation and Initiation Process
- Installation
- Configuration and Management
- Command Line Interface (CLI)
- Telnet into the Command Line Interface (CLI)
- Exalt Graphical User Interface (GUI)
- Quick Start
- Navigating the GUI
- Radio Information Page
- Administration Settings Page
- Simple Network Management Protocol (SNMP) Configuration
- File Transfer Page
- File Activation Page
- Access Security Page
- System Configuration Page
- MHS Configuration Page
- Ethernet Interface Configuration Page
- VLAN Configuration Page
- T1/E1 Configuration Pages
- DS3 Configuration Page
- GPS Information Page
- Alarms Page
- MHS Status Page
- Performance Page
- Event Log Page
- User Throughput Page
- Diagnostic Charts Page
- Spectrum Analyzer Page
- Ethernet Utilization Page
- Reboot Page
- Manual Page
- Specifications
- Interface Connections
- DIP Switch Settings (-16 Models Only)
- Antennas
- DC Coupler for Antenna Alignment
- Troubleshooting
- Back-to-back Bench Testing
- General Compliance and Safety
- Dynamic Frequency Selection
- Safety Notices
- Regulatory Notices
- Regulatory Compliance
- Regulatory Domain Keys
- EIRP Limits for the United States and Canada
- EIRP Limits for the European Union and ITU Countries
- EIRP Limits for Australia
- Declaration of Conformity to the R&TTE Directive 1999/5/EC
- END USER AGREEMENT
- Copyright Notices
- Index
Exalt Installation and Management Guide
EX-i Series (TDD) Digital Microwave Radios
206501-019 107
2016-05-24
Back-to-back Bench Testing
Use back-to-back bench testing to test the radio before installation, pre-configure the radio and
connected equipment before installation, or in the troubleshooting process to identify if the radio
hardware is the source of a system issue. It is a critical process, and often required or highly desirable
for any installation or troubleshooting exercise. This section describes how to properly configure the
radio hardware and accessories for a proper back-to-back bench test.
For radio testing, there are two types of back-to-back configurations:
1 Basic test (test general operation)
2 Specification performance verification
Basic Test
The basic test is a simple test of radio functionality. It verifies that the radios are properly configured to
communicate to one another, and verifies general radio performance as operational.
For the basic test, the following items are needed:
• Radio pair
• Powering source
• RF interconnect cable(s) (any length – short is best)
• Fixed or variable attenuation, between 60 and 90dB (note: attenuation for basic test does not to be
calibrated or precise)
• Computer/terminal with either serial or Ethernet port
Connect the items as follows:
1 Connect attenuation and (known-good) RF cable(s) between radio pair, shown in Figure 65.
2 Configure one radio as Radio A; the other as Radio B
3 Power on radio pair
Figure 65 Basic back-to-back bench test configuration
After connecting and powering on, observe the front panel LEDs to verify that the LINK and STATUS
LEDs are green. If so, the radios are communicating and all radio-related alarm conditions are normal.
It can be beneficial to have a computer to verify configuration in case of red LEDs or to pre-configure
the radio as desired for operation. Follow the instructions in Configuration and Management
.