Cisco Dual LTE Multi-element Multi-band Indoor Antenna Installation Guide
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Table of Contents
Cisco Dual LTE Multi-element Multi-band Indoor Antenna Installation Guide
Overview of the LTE-ANTM-I-2-W Antenna
Features of the LTE-ANTM-I-2-W Antenna
Antenna Options by Deployment Type
Statement 1052—Installing and Grounding the Antenna
Statement 1024—Ground Conductor
Statement 1025—Use Copper Conductors Only
Statement 1046—Installing or Replacing the Unit
Connecting the Antenna to Cisco 819 Series Router
Obtain Documentation and Submit a Service Request
Cisco Dual LTE Multi-element Multi-band Indoor Antenna Installation Guide
This document provides the description, supported features, and installation instructions of the Cisco Dual LTE-Multi-element Multi-band Indoor (LTE-ANTM-I-2-W) Antenna.
Overview of the LTE-ANTM-I-2-W Antenna
Deciding which antenna to use involves multiple factors, such as coverage area, maximum distance, indoor location, outdoor location, and antenna height.
When an antenna is used indoors, the building construction, ceiling height, and internal obstructions must be considered. However, coverage area also becomes important when you use wireless client devices to communicate with a wireless device.
LTE-ANTM-I-2-W antenna is an integrated 2-in-1- indoor and outdoor antenna. It comes with two Long Term Evolution (LTE) antennas in a single radome. This antenna provides an integrated solution to support multiple antennas. As customers migrate to 4G-LTE technology to take advantage of MiMo, this 2-in-1 antenna integrates two colocated 4G Planar inverted-F antenna within a single radome. The following figure shows the LTE-ANTM-I-2-W antenna.
Figure 1 LTE-ANTM-I-2-W Antenna
Features of the LTE-ANTM-I-2-W Antenna
The LTE-ANTM-I-2-W antenna supports the following features:
- No tune, multiband coverage, dual 4G LTE.
- Metal 7/8-inch stud mount with serrated face nut provides single cable exit for easier installation or antenna replacement.
- Attractive low-profile housing for added overhead clearance.
- High-performance, low-loss cable, and high-quality connectors for maximum Radio Frequency (RF) system efficiency.
- UV-resistant white radome.
Technical Specifications
Table 1 lists the specifications for the RF antenna.
Gain 1 (Typical)
VSWR2
60 sq. inches area (minimum) on a flat smooth surface, 7/8 inch diameter hole through mounting surface
Ingress Protection3
1.Total gain, free space test when mounted on a 1-foot diameter ground plane with unused ports loaded.
Supported Antennas
Table 2 lists the supported antennas.
Supported Antenna Accessories
When using the cables, ensure that cable loss for determining the system operation is taken into account.
Table 3 lists the supported antenna accessories.
Antenna Options by Deployment Type
Table 4 lists the antenna options by deployment type.
Safety Precautions
This section contains the following warning statements. A warning means danger. You are in a situation that could cause bodily injury. Before working on an equipment, be aware of the hazards involved with electrical circuitry and standard safety practices to prevent accidents.
Statement 1052—Installing and Grounding the Antenna
Warning Do not locate the outdoor antenna near overhead power lines or other electric light or power circuits, or where it can come into contact with such circuits. When installing the antenna, take extreme care not to come into contact with such circuits, as they may cause serious injury or death. For proper installation and grounding of the antenna, refer to national and local codes (for example, U.S.:NFPA 70, National Electrical Code, Article 810, Canada:Canadian Electrical Code, Section 54).
Statement 1024—Ground Conductor
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.
Statement 1046—Installing or Replacing the Unit
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last.
Caution For your physical safety, and to help you install your antenna successfully, follow these safety precautions.
- If you are installing an antenna for the first time, for your own safety as well as others, seek professional assistance. Your Cisco sales representative can explain which mounting method to use for the size and type of antenna you are about to install.
- Before you install an antenna, contact your Cisco account representative to explain which mounting method to use for the size and type of antenna that you are about to install.
- Find someone to help you—installing an antenna is often a two-person job.
- Select your installation site with safety, as well as performance, in mind. Remember that electric power lines and phone lines look alike. For your safety, assume that any overhead line can kill you.
- Contact your electric power company. Tell them your plans and ask them to come and look at your proposed installation.
- Plan your installation carefully and completely before you begin. Each person involved in an installation should be assigned to a specific task, and should know what to do and when to do it. One person should be in charge of the operation to issue instructions and watch for signs of trouble.
- When installing your antenna, follow these guidelines:
– Do not work on a wet or windy day.
– Do dress properly—wear shoes with rubber soles and heels, rubber gloves, and a long-sleeved shirt or jacket.
- If the assembly starts to drop, move away from it and let it fall. Because the antenna, mast, cable, and metal guy wires are all excellent conductors of electrical current, even the slightest touch of any of these parts to a power line completes an electrical path through the antenna and the installer.
- If any part of the antenna system should come in contact with a power line, do not touch it or try to remove it yourself. Call your local power company to have it removed safely.
- If an accident should occur with the power lines, call for qualified emergency help immediately.
Installation Instructions
The following section contains steps for installing the LTE-ANTM-I-2-W antenna:
Step 1 While choosing the location, keep the following in mind:
- Attempt to center the antenna on a flat plane.
- Attempt to position the antenna so that it has 8 inches of flat plane in any given direction.
- Attempt to space at least 16 inches from an adjacent antenna or metallic structure and choose a location with gentle surface curves to ensure proper sealing.
- Ensure that there is a space that is 4 inches deep (cable bending) and 4 inches in diameter (hand or tool access) below the mounting surface to allow sufficient clearance for the mounting stud, hardware, and cables.
- Ensure that the diameter of the hole is 7/8 inch.
Step 2 Drill a hole through the mounting surface where the center of the antenna is located, as shown in Figure 2.
Note Ensure that the hole is deburred of sharp edges to prevent cable damage during installation.
Figure 2 Drill the Mounting Surface
Step 3 Clean the mounting surface around the hole. The surface must be free of any debris, which would otherwise prevent the antenna's inner foam gasket from adhering to or the outer rubber gasket from forming a seal.
Step 4 Remove the nut from the mounting stud and cables one by one.
Step 5 Insert the cable mounting stud through the hole and then thread the cables through the serrated face nut one by one.
Note It is important that the orientation of the serrated face nut should be correct. Otherwise, the serrated part of the lock nut will not bite into the mounting stud.
Step 6 Position the antenna onto the mounting surface with the provided hexagonal unit and tighten the nut hand-tight, as shown in the following figure. Tighten it further using a wrench torque to 1.5-2Nm (13.3 – 17.7in-lbf). Visually inspect the outer rubber antenna gasket to ensure that it has been compressed and sealed tightly against the mounting surface and radome.
Figure 3 Tighten the Nut after the Antenna is fully seated
Deployment Scenarios
Antenna Ports
This section describes the antenna ports, their locations on the router, and the recommended antenna-installation locations. You can connect an antenna to the ports of Cisco 819 series router.
Connecting the Antenna to Cisco 819 Series Router
The antenna ports and the front panel details of the Cisco 819 series router are shown in the following figures.
Figure 4 Insert Base of Antenna into Router Antenna Port
Figure 5 Front Panel Details of Cisco 819 4G LTE ISR
The following diagram describes how to connect the antenna to Cisco 819 series router inside a building. The connection from the main, diversity of the router is via cables to an externally mounted, low profile, ceiling mount integrated antenna.
Related Documentation
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00807f34d3.shtml
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