Airspan Networks AIRSPAN-WIPLL9 WippLL Radio User Manual Inst 02

Airspan Networks Inc WippLL Radio Inst 02

Contents

Safety Installation Information

02030311-07 Airspan Networks Inc. 2-1
Safety Guidelines
This chapter outlines safety guidelines when installing the AS WipLL system.
Warning: The user and the installer should be aware that changes and
modifications not expressly approved by Airspan Networks could void the
user’s authority to operate the equipment.
Warning: Never install equipment that is damaged.
Warning: Only qualified personnel should be allowed to install, replace, and
service the AS WipLL equipment.
2.1. Electrical Safety Guidelines
Warning: Disconnect all power when installing.
2.1.1. Handling Electrostatic Devices
Electrostatic devices are those devices that may be damaged by the inadvertent
discharge of static electricity from a charged body. The risk of damage, due to
electrostatic discharge (ESD) to a device, may cause the device to fail suddenly, or it
may induce a partial defect within the device, which will cause subsequent
premature failure.
2
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Static electricity can result from operators walking on floors, moving around on
chairs, from the movement of operator's clothing or even casual brushing against
racks, benches or walls.
Airspan recommends the following guidelines to be adopted to minimize the risk of
component failure due to electrostatic discharge to the device:
AS WipLL devices are provided typically in see-through anti-static bags.
Wherever possible, checking and inspection of a unit should occur without
removing it from the bag.
All operators shall wear the approved conductive overall.
Where operators come into direct contact with any piece of electronic hardware,
operators must wear an ESD-preventive wrist strap. All straps and cords
should be tested using a Wrist Strap Tester prior to use. The wrist strap cords
shall have a 2 Meg Ohm resistor fitted at either end. Wrist straps should be worn
in direct contact with bare skin and not over clothing.
Warning: To prevent ESD damage to AS WipLL devices, always wear an ESD wris
t
strap when handling these devices or coming into contact with internal components.
2.1.2. Grounding
Only certain AS WipLL devices require additional grounding. AS WipLL devices
that do not require additional grounding have grounding at the main supply outlet.
The following table lists the AS WipLL devices’ grounding requirements.
Table 2-1: AS WipLL grounding requirements
Site AS WipLL
device
Grounding
BSR Through the mains (via BSDU)
BSDU Additional grounding required (grounding lug at rear end
of chassis)
Base Station
BSPS Additional grounding required (grounding lug at rear end
of chassis)
CPE SPR Through the mains (via SDA)
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IDR Through the mains
2.1.3. Lightening Protection
Warning: Never install the equipment during stormy weather and lightening.
AS WipLL devices comply with the Surge Immunity standard: EN 61000-4-5. AS
WipLL devices are protected from lightening surges as the outdoor devices (BSRs
and SPRs) are encased in a plastic chassis. Therefore, if lightening strikes the
device, an electrical circuit cannot be completed, and hence, no electrical surge can
occur.
In addition, AS WipLL outdoor and indoor (SDA) devices provide high-speed data
line protection against direct and induced transient over-voltages surges on the
cables. This capability is provided by the fact that all AS WipLL devices are
designed with TVS (transient voltage suppressor) components that maintain
potential differences.
However, for geographical areas that have above normal lightening activity, Airspan
can supply a surge protector composed of a 15-pin D-type adapter with a grounding
wire.
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2.2. Installing AS WipLL Radios and Third-Party
External Antennas
Warning: For unlicensed bands, it is the responsibility of the person installing
the AS WipLL system to ensure that when using the outdoor antenna kits in the
United States (or where FCC rules apply), that only those antennas certified
with the product are used. The use of any antenna other than those certified
with the product is expressly forbidden in accordance with FCC rules CFR47
part 15.204. The installer should configure the output power level of antennas
according to country regulations and per antenna type.
Warning: Outdoor AS WipLL units and antennas should be installed ONLY by
experienced installation professionals who are familiar with local building and
safety codes and, wherever applicable, are licensed by the appropriate
government regulatory authorities. Failure to do so may void Airspan’s
A
S
WipLL product warranty and may expose the end user or the service provide
r
to legal and financial liabilities. Airspan and its resellers or distributors are not
liable for injury, damage or violation of regulations associated with the
installation of outdoor units or antennas.
Warning: When using external antennas, the external antennas must not be
co-located or operating in conjunction with any other antenna or transmitter.
Warnings:
1) The device cannot be sold retail, to the general public or by mail order. It
must be sold to dealers.
2) Installation must be controlled.
3) Installation must be performed by licensed professionals.
4) Installation requires special training.
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Warning: For unlicensed bands, in accordance with FCC regulations, ensure
that the external antennas provide an EIRP of less than or equal to 36 dBm to
prevent interference with other radios operating in the unlicensed band. The
EIRP is defined by the following formula:
Max. Power Output + Antenna Gain - Cable Loss ≤ 36 dBm (EIRP)
Airspan does not supply cables for connecting external antennas. It is the
responsibility of the installer to provide the cable and ensure the cable
characteristics (e.g. length and cable loss) enables adherence to FCC's
regulations concerning maximum EIRP.
The table below lists examples of cable loss per cable (not supplied by
Airspan) for maximum antenna gains, based on the formula above. Note that
the EIRP is either equal to or less than 36 dBm.
Warning: The AS WipLL transceivers emit microwave radiation. Therefore, a
minimum distance of 200 mm must be maintained from the front of the device.
However, when operating in the 700 MHz band (i.e. AS WipLL 700) using
external antennas a minimum distances of 800 mm must exist.
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2.3. Preventing Radio Interference
The digital portion of the transceiver has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment on and off, the user is encouraged to try
correct the interference by performing one or more of the following measures:
Reorientate or relocate the receiving antenna
Increase separation between the equipment and receiver
Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected
Consult the dealer or an experienced radio/TV technician for help
Warning: The AS WipLL transceivers emit microwave radiation. Therefore, a
minimum distance of 200 mm must be maintained from the front of the AS
WipLL radios. However, the following minimum distances must exist when
operating in the following bands:
- 700 MHz (i.e. AS WipLL 700) = 800 mm
- 2.5 GHz (i.e. AS WipLL 2.5) = 500 mm
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2.4. Cabling
Warning: The maximum cable length between the radio transmitters (i.e., BSR
and SPR) and terminating equipment is 100 meters.
Warning: Cables with exposed ends (i.e., not yet crimped) should be covered
with protective polythene bags during external cable installation processes.
Note: Prior to the commencement of any installation, commissioning work at
‘live’ sites it is the responsibility of the Airspan engineer to advise the
customers representative before any activity commences. If in doubt assume
equipment is ‘live’.
Warning: Disturbance of cables on an In-Service exchange can cause loss o
f
service. Extreme care must be taken when installing cables at any customer o
r
subscriber premises.
2.4.1. Considerations
The following issues should be considered during cabling at the AS WipLL Base
Station and customer premises:
Cable routes are to be defined in the site-specific documentation.
Note: A minimum separation of 200 mm should exist between power and data
cables. However, it is permissible to allow these cables to cross each other at
right angles.
Observe recommended minimum bend radii when installing copper cables.
Wherever a cable changes direction, ensure that it does so in a smooth curve
with a radius of at least 50 mm to prevent damage.
Plastic ties and wraps are to be used to secure cables at regular intervals to trays,
guides, and mounting pole/bracket. Ensure all trimmed ends are disposed of
safely and at regular intervals.
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Data cables of less than 20 pairs shall be mixed in bundles not exceeding 50 mm
in diameter.
Ensure cables are not trapped in cabinet doors, by slide-in equipment or support
metalwork.
Excessive stress on cable terminations caused by taught cables should be
avoided. Connector strain relief, if not built into the connector used, shall be
provided by means of a strategically located cable tie. A maintenance loop or a
generous amount of cable slack shall be provided just before the cable reaches
the AS WipLL device to allow for equipment removal without disturbance to
adjacent cables.
When installing network cables, ensure they are not damaged by friction or sharp
edges.
Data cables providing connection to the customers network shall be run in
protective conduits. Cable conduits should be secured to the wall in accordance
with manufacturers instructions.
External data cables are to be protected in metal conduits, which are to be
secured to the building structure in accordance with manufacturers
recommendations.
Wiring conduits must be placed in areas to prevent a trip hazard (e.g. don’t
install on roof walkways)
Cables should be carefully fed through conduits and not pulled by means of any
attached connector.
Sufficient space should be provided in cable conduits, trunking or trays (where
possible) to allow for future cabling growth.
Data cables threaded into holes drilled in walls are to be covered by a waterproof
sheath to prevent water penetration.
Silicone sealant should be used to plug any holes on both internal and external
wall surfaces once cables are in place.
Cables not housed in conduits must be placed in a manner to avoid a trip hazard.
(Avoid trailing wires across passageways.)
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2.4.2. Labeling
The following labels are required to be fitted to AS WipLL equipment:
Voltage Warning
High Earth Leakage Current
Signal Cable Designation
2.4.2.1. Voltage Warning
Warning: Voltages over 30 Volts
A
C and 50 Volts DC are categorized as
hazardous. Hazard warning labels should be fitted where required. Certain
countries require equipment warning and instruction labels to appear in the
local language. When installing AS WipLL equipment ensure that local
requirements regarding labels are given consideration.
Where mains power is fed from separate phases, appropriate warning labels must
be fitted to warn of the increased danger.
The AC equipment used in the BSPS cabinet must carry a relevant voltage
warning label specific to the country in which it is being installed. The label will
be fitted to the cabinet doors displaying an electrical hazard symbol, the local
operating voltage and the letters ‘AC’.
A power feed identification label (e.g. PWR ‘A’) shall be applied in the
following locations:
On the rear of the main power rack adjacent to the terminal block
Attached to BSPS AC mains power plug or lead
Attached to the customer mains power socket or distribution rail
On the BSPS power circuit connection at the fuse board
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2.4.2.2. High Earth Leakage Current
If equipment earth leakage current exceeds 3.5 mA, a warning label as shown in
Figure 2-1 must be fitted to the rear of the main power rack alongside the AC inlet
terminal block.
Figure 2-1: Warning label if earth leakage current exceeds 3.5 mA
2.4.2.3. Signal Cable Designation
All data cables should be labeled with both the source and destination at each end. A
wrap around identification label, similar to that shown in Figure 2-2, is to be fitted to
both ends of AS WipLL data cables. Care should be taken to ensure that the cable
identification information is clearly visible. Fit the label 100 mm from the cable end.
Wrap the label ensuring good adhesion to cable and itself.
From
BDSU 1/1
To
SPR 1
To
SPR 1
From
BDSU 1/1
BSDU End SPR End
Figure 2-2: Typical signal cable identification label
WARNING
HIGH LEAKAGE CURRENT
Earth connection essential
Before connecting supply

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