User's Manual
Table Of Contents
- ExtendAir® (TDD) Series Direct Mount Digital Microwave Radios Installation and Management Guide
- Legal Notice
- Open-Source License Information
- Table of Contents
- About this Document
- Introduction
- Pre-installation Tasks
- Link Engineering and Site Planning
- Familiarization with the ExtendAir® (TDD) Series Direct Mount Radios
- Initial Configuration and Back-to-Back Bench Test
- Time Division Duplex (TDD) Factors
- Link Orientation and Synchronization
- Radio Synchronization
- Offset Timing
- Virtual Local Area Network (VLAN)
- Simple Network Management Protocol (SNMP)
- System Installation and Initiation Process
- Installation
- Configuration and Management
- Telnet into the Command Line Interface (CLI)
- Telnet
- Exalt Graphical User Interface (GUI)
- Quick Start
- Navigating the GUI
- Radio Information Page
- Administration Settings Page
- Simple Network Management Protocol (SNMP) Configuration
- File Management Pages
- File Transfer Page
- File Activation Page
- System Configuration Page
- Ethernet Interface Configuration Page
- T1/E1 Configuration Pages
- VLAN Configuration Page
- Ethernet Rate Limiting
- GPS Information Page
- Alarms 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
- Antennas
- Troubleshooting
- Back-to-back Bench Testing
- General Compliance and Safety
- Safety Notices
- Regulatory Notices
- Regulatory Compliance
- Conducted Power Limits for the United States and Canada
- Declaration of Conformity to the R&TTE Directive 1999/5/EC
- Exalt Limited Hardware Warranty
- Copyright Notices
- Index
Exalt Installation and Management Guide
ExtendAir
®
(TDD) Series Direct Mount
28 000000-001
2011-08-26
Antenna/Transmission System
This section provides guidance to mounting and connecting the RF transmission system, which
consists of the antenna, RF cabling, and RF lightning arrestors. Consult the manufacturer’s instructions
for proper mounting, grounding, and wiring of these devices, and for definitive direction. These
manufacturer’s instructions supersede any information in this section. See Table 6
for a list of
supported antennas.
Antenna Alignment
Antennas must be installed at both ends of the planned link to commence precision alignment. Refer to
the Exalt white paper, Antenna Alignment. The ExtendAir
®
(TDD) Series Direct Mount radios have an
integrated antenna.
Antennas are typically aligned using the radio hardware for precise alignment. However, there are
many very useful tools available to aid in this process, inclusive of devices specifically designed for
the purpose of aligning antennas. Some examples are:
• XL Microwave Path Align-R
• Teletronics 17-402
Use of these devices may be extremely advantageous as compared to using the radio, because they
employ many unique facilities to aid in this process. Using these tools also makes it possible to align
the antennas before the radio equipment is delivered. However, many installers successfully use the
radios as the means for antenna alignment.
The following are the primary facilities when using the radio to align the antenna:
• RSL voltage connection using a volt meter (recommended)
Insert the included adapter into the GPS connector on the radio housing and the opposite end
connected to a volt meter.
The RSL test point DC voltage is inversely proportional and numerically calibrated to the received
signal level. The voltage rises as the antennas are less in alignment, and falls as antennas are more
in alignment. The voltage measurement corresponds to the received signal level in measurements
of dBm (a negative number for RSL measurements). For example, an RSL of -60dBm yields an
RSL voltage measurement of 0.60VDC; an RSL of –45dBm measures 0.45VDC.
• Audio alignment buzzer
Enable the audio alignment buzzer through the Exalt GUI. When enabled, the radio enclosure
emits a sound. The pitch rises when higher (better) levels of RSL are achieved. Align the antennas
until the highest pitch is accomplished. The tone is continuous when the two ends of the radio
system are in communication. Otherwise, the buzzer beeps.
• Exalt GUI RSL reading indicates the current RSL in dBm.