User's Manual
Table Of Contents
- Important Safety Instructions
- Overview
- The ERU assembly
- Do you have everything?
- Safety precautions
- Introduction
- Installing the ERU
- Installation overview
- Installation guidelines and requirements
- Estimating cable requirements
- Assembling the mounting bracket and pipe
- Installing the ERU on solid wood or lap siding
- Installing the ERU on brick or poured concrete
- Installing the ERU on a cinder-block or hollow wall
- Installing the ERU under the eaves
- Installing the ERU on a roof
- Attaching the ERU to the mounting assembly
- Routing and grounding the exterior cables
- Routing cable to the SOMAport
- Troubleshooting
7
Important Safety Instructions
For your safety and protection, read this entire guide before you attempt to install the
External Radio Unit (ERU). In particular, read this safety section carefully. Keep this
safety information where you can refer to it if necessary.
Heed warnings
– Adhere to all warnings on the product and in the operating
instructions.
Follow instructions
–
Follow all operating instructions.
Attachments –
Do not use attachments unless recommended by SOMA Networks as
they may cause hazards.
Power lines –
Locate the ERU more than 6 m (20 feet) from overhead power lines,
electric lights, or power circuits. When installing the ERU, do not touch (or allow the
ERU or any cabling or ladder to touch) power lines, electric lights, and power circuits,
as contact with them may be fatal. If any part of the ERU comes into contact with a
power line, call your local power company. Do not try to remove it yourself.
Weather conditions
–
Do not install the ERU while it is raining, if there is threat of
lightning, or if winds are over 40 km/h (25 miles per hour).
Outdoor grounding –
Ground the ERU to prevent voltage surges and buildup of
static charges. Follow Section 810 of the National Electric Code (NEC), which provides
guidelines regarding proper grounding of the ERU and supporting structure, grounding
of the lead-in wire to an antenna discharge unit, size of grounding conductors, location
of antenna discharge unit, connection to grounding electrodes, and requirements for
the grounding electrode. In Canada, follow Section 10 of the Canadian Electrical Code
(CEC). For other countries, be sure to meet the requirements of the electrical codes of
that country.
Grounding electrode system –
Protect yourself and the equipment from shock and
fire hazard by grounding the ERU according to guidelines in the following NEC
articles:
Article 250-53 provides guidelines for the grounding path to the grounding
electrode.
Article 250-81 provides guidelines for a ground electrode system.
Article 250-83 provides guidelines for other individual grounding electrodes.
WARNING:
One milliampere of current flowing through your body can kill you.
Voltage as low as 15 volts can kill under the right conditions. Treat energized equipment with
respect.