Making connections in a high-speed world
AR60X Wireless Ethernet Links
Installation Manual
P/N 580-00517
Revision B
January 2008
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Safety
CAUTION, WARNING, and DANGER statements have been strategically placed in the text to
alert personnel of possible hazards. These statements must be closely observed.
The following general safety precautions must be observed during all phases of operation and
service of the products covered in this manual. Failure to comply with these precautions or with
specific warnings elsewhere in this manual willfully violates standards of design, manufacture,
and intended use of the product. BridgeWave assumes no liability for the customer’s failure to
comply with these requirements.
• These BridgeWave radios meet all applicable FCC safety requirements for general
population exposure to radio frequency emissions; however, it is best to avoid prolonged,
unnecessary exposure to the front of the radio while it is operating.
• The outdoor equipment must be properly grounded to provide some protection against
voltage surges and built-up static charges. In the event of a short circuit, grounding
reduces the risk of electrical shock.
For installations in the U.S.A., refer to Articles 810830 of the National Electrical Code,
ANSI/NFPA No. 70, for information with respect to proper grounding and applicable
lightning protection for DC cables. The installer must also follow any additional local
building and electrical code regulations.
For installations in all other countries, implement protection in accordance with the
safety standards and regulatory requirements of the country where the equipment is to be
installed.
• Do not install or operate this equipment in the presence of flammable gases or fumes.
Operation of any electrical instrument in such an environment constitutes a definite
safety hazard.
• Do not install substitute parts or perform any unauthorized modification to the
equipment. Changes or modifications not expressly approved by BridgeWave can void
the user’s authority to operate the equipment.
iii
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Regulatory Information
This device complies with FCC Part 15.255 and Industry Canada RSS-210.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and,
(2) This device must accept any interference that may cause undesired operation.
Equipment Precautions
Water and Moisture - All AR 60X links are designed to withstand weather conditions typically
encountered when installed outdoors.
Power Sources - This product should only be operated with the type of power source provided by
BridgeWave Communications Inc.
580-00517, rev B
iv
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Table of Contents
v
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
1 Introduction
1.1 Purpose of Manual
The information in this manual is directed to persons who must perform or coordinate the tasks
associated with the process of installing wireless communication devices, and planning
communication network applications.
1.2 Prior Knowledge
This manual assumes the operator has at least basic experience with and an understanding of wireless
technology and some familiarity with configuring and operating networking equipment. Preferably,
the person installing this equipment fully understands the information covered in this manual prior to
attempting these procedures.
DANGER, WARNING and NOTE statements have been placed in various sections throughout this
document to alert personnel of possible traffic affecting issues and to provide additional tips and
helpful information. These statements should be closely observed.
Symbol
Description
Indicates that personal injury can result if the user does not
comply with the given instruction.
A DANGER statement will describe the potential hazard, its
possible consequences, and the steps to perform to avoid
personal injury.
Indicates that equipment damage, process failure and/or loss of
data can result if the user does not comply with the given
instructions.
A WARNING statement will describe the potential hazard, its
possible consequences, and the steps to perform to avoid
serious equipment damage.
Provides supplementary information to emphasize a point or
procedure, or provides a tip for easier operation.
580-00517, rev B
0
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
1.3 Contact Information
Technical Assistance and Customer Service
BridgeWave distributors are authorized local service providers and are responsible for immediate
customer support. If problems are not resolved, contact BridgeWave Customer Service for assistance:
Santa Clara, CA USA
Tel:
Fax:
408.567.6906
408.567.0775
Email: support@bridgewave.com
Return Material Authorization (RMA)
Should BridgeWave equipment have to be returned for repair or replacement, an RMA number must
be obtained from BridgeWave or the local BridgeWave distributor. When returning equipment, be
sure to write the RMA number on the outside of the shipping carton.
BridgeWave Sales
E-mail:
+1.866.577.6908
Inside Sales:
1
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
2 Site Planning
2.1 General
Before the start of an installation a survey should be conducted of the proposed area of the site(s). The
survey personnel should be fully familiar with the details required to install the BridgeWave radio
system.
2.2 Equipment Checklist
The survey team will need at least the following equipment:
• Binoculars
• GPS Navigation Device
• Tape Measure
• Site Survey Report Form
• Level
2.3 Line of Sight (LOS)
BridgeWave Wireless links require line-of-sight for proper operation. Fortunately, the links are
relatively short and obstructions in the path can easily be identified. Binoculars can ease viewing in
poor light conditions.
The planning should include an investigation into future building plans that could block the LOS path,
and other long-term incremental obstructions such as trees. Intermittent obstructions such as aircraft at
a nearby airport should also be considered.
The following table details the minimum clearance needed from obstacles near the path in order to
ensure the radios will operate properly.
Path Length
(meters)
Minimum Clearance
(meters)
250
500
0.56
0.79
0.97
1.12
1.37
1.58
750
1000
1500
2000
Table 2-1: Minimum Clearance at Link Midpoint for various Path Lengths
580-00517, rev B
2
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
2.4 Link Distance
Measurement of the link distance is important in estimating the link availability and calculating
expected Receive Signal Level (RSL). This measurement can be performed using the Latitude and
Longitude readings from a Global Positioning System (GPS) device, which is placed near the
proposed locations of the antennas, or using a range finder device.
The Minimum Link Distances are as follows:
• AR/GE/FE 60: 65 feet (20 meters)
• AR60X: 330 feet (100 meters)
To estimate maximum distances and availabilities for a given product and region, BridgeWave’s Path
Availability Calculator can be used. To obtain the latest version of BridgeWave’s Path Availability
Calculator, contact BridgeWave’s Customer Service or search the eService center knowledgebase
2.5 Antenna Location
The optimum location for the antennas must be determined. The ideal location should provide for ease
of erecting and mounting the antenna, as well as unimpeded Line-Of-Sight (LOS) to the other site.
The following factors should be taken into account:
• Type of mounting—fixed or roof-safe pole mounting
• Location where the fiber and DC power wiring will enter/exit the building
• Length of cable runs
• Grounding connection points
• Obstructions (LOS)
• Accessibility of mounting location
• Access to building after regular working hours
3
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
2.6 Cabling
The installation site should be inspected to determine the run paths for the fiber cable and power cable
from the radio equipment to the termination point. Locations for roof penetration should be identified.
The routing and securing of all cables should conform to all applicable codes and requirements.
Depending on the likelihood of damage due to foot traffic or equipment movement, cabling conduit
may be required. The maximum cable run length as specified for the equipment being installed must
not be exceeded.
The radio requires an LC type connectors on a pair of simplex multi-mode fibers to properly connect
to the radio and the users network equipment. Single-mode fiber is not a current option supported by
the radio. The network equipment end of the fibers should be terminated with connectors that match
the network equipment fiber interface.
Fiber Cable Length
Up to 270 meters
Up to 500 meters
Cable Type
62.5/125 μm
50/125 μm
Table 2-5: Fiber Cable Types
Each radio includes a 100-240 VAC power adaptor suitable for indoor operation that converts the AC
voltage from the standard electrical outlet in the wall to DC voltage. The radio requires a minimum of
15.0 VDC (24.0 VDC maximum) via the power cable to the radio to function properly. When
planning the cable run from the indoor mounted AC power adaptor to the radio unit, it is critical to use
the cable gauge (AWG) indicated below to ensure adequate voltage at the radio. The electrical cable
that is used outside the building must be outdoor rated (i.e., weather-protected) providing a single pair
of wires necessary to power the equipment. The required DC power cable is 12 or14 gauge, 2 wire
(i.e., 12/2 or 14/2) rated for outdoor use.
Minimum Cable Size
Outside Diameter of DC
Cable Jacket (min-max)*
0.14 – 0.36 inches
(3.6 – 9.2mm)
DC Cable Length
Up to 125 meters
Up to 200 meters
Conductor size
14 AWG
(2.5mm2)
12 AWG
0.17 – 0.45 inches
(4.3 – 11.9mm)
(4mm2)
Table 2-6: Minimum DC Cable Size
The DC cable must comply with local building and/or electrical
codes in your area.
580-00517, rev B
4
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Figure 2-3 (left) details a
standard 14-gauge wire that
has been fitted with the power
connectors (provided) for the
radio’s internal power supply
necessary to mate with the
provided power cord. A
standard crimping/splicing
tool (not provided) is required
to terminate the power
connectors onto the 14-gauge
cable required for use with
the unit.
Figure 2-3: 14-gauge DC power cable with crimp connectors
In addition to grounding the equipment, BridgeWave strongly recommends, and local building
codes may require, that the power cable be protected from lightning strikes. If a copper Cat5 Ethernet
cable is used for Network Management access, it is also necessary to install surge suppressors at each
end of this cable. A surge suppressor must be placed within the radio enclosure (to protect the radio
electronics) and at the building exit/entrance (to protect the indoor equipment). BridgeWave
recommends the Dehn Patch DPA M CAT6 RJ45S 48.
2.7 Grounding & Lightning
Proper grounding of the outdoor equipment reduces
electromagnetic interference, provides lightning protection, and
protects against electrical discharge.
Using improper techniques in lightning prone geographic areas
may pose a danger to local personnel.
The source and connection points for the building-to-earth ground
in the vicinity of the antenna location should be determined.
It is recommended to integrate the radio ground into the building ground utilizing the pole mount
hardware. For wall or ungrounded pole mounts connect a grounding wire to the grounding point on
the radio. Select the size of the ground wire based on the National Electrical Code.
In addition to grounding the equipment, BridgeWave strongly recommends, and local building
codes may require, that the DC electrical cable be protected from lightning strikes with a surge
5
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
suppressor. The surge suppressor must be installed at the point where the DC electrical cable
exits/enters the building, however, the use of a surge suppressor at the radio unit is optional since
power cable surge suppression is built into the unit.
If a copper Cat5 Ethernet cable is permanently installed, it is necessary to install surge suppressors at
both ends of this cable. A surge suppressor must be placed within the radio enclosure (to protect the
radio electronics) and at the building exit/entrance (to protect the indoor equipment).
For more information on recommended accessory devices and
kits, contact BridgeWave Sales
2.8 Environmental
The structure to which the equipment will be mounted must be adequate to bear all wind and weather
conditions. The wind load at high wind velocities can exceed 100 ft/lb of torque, BridgeWave highly
recommends pole diameters of 3” or more. The environmental conditions at the location must
conform to the operating environment specified for the equipment.
580-00517, rev B
6
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
2.9 Cabling Diagram
Following is a diagram detailing the equipment and cabling found on a typical installation of
BridgeWave’s 60GHz radio equipment.
7
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3 Installation
3.1 General
It is recommended that installation personnel read this section in its entirety prior to installing the
BridgeWave System. During a particular phase of installation, the user may refer directly to the
applicable subsection.
The Installation section is comprised of seven subsections covering the procedures and guidelines for
installing the BridgeWave Radio System.
Subsections 3 through 3.4 contain information necessary to prepare for the equipment
installation.
Subsections 3.5 through 3.8 covers equipment installation procedures.
Subsections 3.9 and 3.10 contains information necessary for aligning the antennas.
3.2 Equipment Unpacking
The radio system equipment will arrive in two boxes—one box for the low band radio and one box for
the high band radio. Locate the correct box (low band or high band) before beginning installation by
checking the label on the outside of the box or on the radio itself. It is recommended that the shipping
cartons and packing materials be retained in the event that it is necessary to return any equipment.
Unpacked radios can be identified by the color of their labels
found on their front faces or inside the unit after removing the
plastic back weather cover. The blue color label indicates a high
band radio and the red color label indicates a low band radio. See
Figure 3-5 for further details.
580-00517, rev B
8
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.3 Equipment Inventory
Each carton is accompanied by a packing list. Verify the contents of the carton against the packing
list. Following are inventory lists for a typical system.
Qty
Description
2 ea. AR60X radios (1 low-band & 1 high-band)
2 ea. Standard Power Supply (Indoor rated, 100-240VAC input to 24VDC output)
2 ea. Pole mount kits
1 ea. CD with Manuals (1 CD provided per pair of radios)
2 ea. DC power connection set. (Includes 2-prong DC plug and 2 ea slip fit plugs/receptacles)
2 ea. Antennas (radios are attached to back of antenna in vertical polarization)
1 ea. Hard reset box
AR60X Antenna and Mount Kit Parts List
Item Description
Qty.
1
1
1
2
Antenna
Lower Pole mount
assembly
3
1
1
Upper Pole mount
assembly
Antenna mounting
4
plate
5
6
7
8
3/8 bolts
2
2
2
2
3/8 lock washers
3/8 flat washer
3/8 nylon washer
Figure 3-1
The radio is sealed at the factory warranty stickers on the inner
(metal) cover of the radio. There is no need to open this cover in
the field. Tampering with these seals will void the warranty.
9
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.4 Installation Tools
The following tools, not provided by BridgeWave, are required for installing the radio and the
antenna:
Screwdriver, slotted 0.1 inch (2.5mm) wide
Open-end wrench 11/32 (9mm)
Open-end wrench 9/16 (14mm), 2 ea.
Open-end wrench 1/2 (13mm)
Ratchet with 6 inch (15cm) extension and 9/16 inch (14mm) deep socket
Wire stripper/cutter/crimp tool (10-16 gauge)
Electrical tape
Fish tape for pulling cable
Cable tie wraps
Level
Hand-held DVM (digital voltmeter) with standard banana plug receptacles
580-00517, rev B
10
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.5 Antenna Mount Installation
1. Read these instructions before beginning installation. Caution
should be used. Qualified persons experienced with antenna
assembly and installation are required for installation.
2. BridgeWave Communications Inc. disclaims any responsibility
or liability for damage or injury resulting from incorrect or unsafe
installation practices.
3. The antenna has been formed to a very close tolerance
parabolic shape. Careful handling and assembly is required to
avoid denting the reflector, which would degrade antenna
performance.
1. Attach the upper pole mount.
Confirm that the Mount is
centered as shown.
Tighten bolts Securely
Figure 3-2
11
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
2. Attach the lower pole mount as shown.
Hardware: Flat washer, bushing
(inside eye), flat washer, lock
washer, bolt.
Figure 3-3
Confirm that the Mount is
centered as shown.
Tighten bolts securely
Figure 3-4
580-00517, rev B
12
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3. Completed installation of pole mount with right hand offset for the antenna.
Note the position of the elevation
adjust hex nut.
Figure 3-5
4. Optional left hand antenna offset mount preparation.
-
-
-
-
Remove bolts
rotate the antenna mounting plate 180º
replace bolts
tighten bolts securely
Note the new position of the
elevation adjust hex nut.
Figure 3-6
When using the left side radio mount position, the antenna drain
plugs must be rotated to the top drain holes and the bottom holes
must be open to allow for proper drainage.
13
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.6 Antenna and Radio Installation
5. Install – Antenna
Slip antenna over pivot pin, ensuring that the elevation adjust pin is engaged with slot in adaptor
plate.
Secure the antenna
with two (2) x 3/8-16
bolts, lock washer, flat
washer and nylon
washers attach antenna
to the alignment plate.
Figure 3-7
When the radios come from the factory, they are mounted on the back of the antenna in the
vertical polarization position, that is, the diamond marking (see figure 3-8 below) on the front of
the radio housing is to the right when viewed from the front of the radio. For horizontal
polarization, the radio needs to be removed from the antenna and rotated so the diamond is at the
top when viewed from the front.
580-00517, rev B
14
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Figure 3-8: Polarization diamond orientations: vertical (left) and horizontal (right)
The blue color label indicates a high band radio and the red color
label indicates a low band radio
It is critically important during installation to ensure the
radios on each side of the link are in the same polarization
(horizontal-horizontal or vertical-vertical). A link that has a
radio on one side of the link set in the horizontal polarization
and the other side of the link set in the vertical polarization
will not operate properly.
It is also critically important that a high-band radio is paired with
a low-band radio to ensure the system will operate properly. Prior
to installation check each radio to verify one is a high-band and
the other is a low-band version. The label on the radio will
indicate the band (blue for high or red for low).
6. Verify that the four (4) captive 3/8-16 bolts with lock and flat washer are in place. A ½ inch
open-end wrench is required to tighten them. It is important that all four screws are tightened
evenly (hand tight, 1 to 2 turns each and finally until the lock washer is flattened)
Figure 3-9 Captive radio bolt detail
15
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
7. Attach the radio to the back of the antenna and tighten the four (4) bolts.
See 6. for details.
Figure 3-10 Attaching the radio to the back of the antenna
8.Adjust azimuth (Side to Side)
1. Loosen the 4
Azimuth lock bolts
3. Secure the 4
Azimuth lock bolts
(tighten until lock
washers are flattened)
2. Adjust eyebolt
length using a 9/16
open-end wrench to
required location
Figure 3-11 Azimuth (right/left) alignment
580-00517, rev B
16
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
It is very important that the azimuth bolts are tightened before any
elevation adjustment is done. The very narrow beamwidth of this
antenna (0.6º) makes it necessary to completely tighten the bolts of
the azimuth adjustment while adjusting the elevation and vice
versa.
8. Adjust elevation (up - down)
2. Rotate Elevation
adjust hex nut as
required to set
correct elevation.
1. Loosen (2)
antenna
mounting bolts
3. Tighten all bolts
after the elevation
is set.
Figure 3-12 Elevation (up/down) adjustment
Begin the alignment process with the antenna in a level attitude.
When adjusting elevation, it is better to start in a low attitude and
raise the antenna to the proper position than to start high and
work towards a low elevation setting.
17
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.7 Cable Installation
Fiber Cabling
1.
Install a pair of multi-mode fibers (850nm) from the radio to the network termination equipment
(switch or router with 1000Base-X port). The cable should be looped around the inside of the
enclosure to provide strain-relief. Do not connect the fibers to the radio’s fiber ports at this time.
The connectors on the radio end of the fibers require simplex LC connectors; the connectors on
the switch/router end should be chosen to correctly mate to the network equipment sockets.
The simplex LC connectors for the radio need to be inserted
individually through the slip-fit connectors on the radio, as there
is not sufficient room for both to fit through at the same time. If
you have a duplex hood joining the LC connections, it should be
temporarily removed during this process.
2.
Connect fibers at the network equipment.
It is important not to connect the fibers to the radio until after
aligning the radio as the radio performs an automatic calibration
once the fiber is inserted into the radio and this calibration will
not operate properly if the radio is not properly aligned. If this
inadvertently occurs while the radio is powered on, unplug the
fibers and power cycle the radio.
Power Cabling
1.
2.
3.
Select indoor location for the AC power adaptor, with easy cable routing to the radio. Normally
it is convenient, but not required, to place the adaptor near the network termination equipment.
Ensure the DC wire used is 14-gauge type and no longer than 125 meters; or 12-gauge and no
longer then 200 meters.
Connect the provided DC Connectors onto the 14-guage wire using a splicing/crimping tool.
For the use of 12-gauge wire it may be necessary to trim a few strands from the ends of thicker
stranded cables to more easily fit the crimp connectors.
4. Install the DC power cable and attach to the AC adaptor using the supplied crimp connectors.
Do not connect the power jack to the radio at this time.
Be sure to first connect the DC power connectors before inserting
the power plug into the power jack in the radio. Minor electrical
sparks may be noticed if the sequence above is not followed;
however, these sparks are normally harmless.
580-00517, rev B
18
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Optional Copper Ethernet Cabling
Normally, only the fiber cable is used to carry network traffic to the indoor network equipment. In
special cases, it may be necessary to use a 10/100Base-T copper connection to the indoor equipment
(or other outdoor network equipment), in which case special care must be taken to protect both the
radio unit and the indoor equipment from electrical surges. Surge suppressors are not needed for
temporary connections while installing or troubleshooting a link when lightning is not a risk.
1. Install a Cat5 type Ethernet cable from the radio to the network termination equipment (switch
or router with 10/100Base-T port). The cable should be looped around the inside of the
enclosure to provide strain-relief. Connect the Ethernet cable to the surge suppressor placed
within the radio housing and then connect a cable from the other end of the surge suppressor
to the radio’s 10/100Base-T port.
The RJ45 connector for the radio needs to be inserted separately
from the fiber and DC cable through the ¾-inch conduit fitting on
the radio, as there is insufficient room for all to fit through at the
same time.
2. Install a second surge suppressor at the building entrance/exit. This may require the use of RJ45
Female/Female couplers. Connect Ethernet cable to the network equipment used for network
management.
Figure 3-13: Back view of vertically polarized unit.
19
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Figure 3-14: Inside view of fiber, power and Cat 5 cable connected
The fiber cable is inserted through the fitting before the conduit is
connected to the fitting. Ensure that the cables do not get pinched
when the conduit is pushed onto the fitting. Both the cables have
been looped around the inside of the enclosure to minimize tension
on the cables when connected to the radio and to maintain proper
bend-radius of the fiber cable.
Ground Cabling
The preferred method for grounding the radio unit is to ground the mast (or wall-mount bracket) to a
ground source, since this provides the largest grounding surface contact possible. If this is not
possible, then use the following procedure:
1.
Attach the lug of the ground cable (not provided) with the radio to one of the two #8 holes at the
bottom of the radio using a #8-32 x ½” long bolt, #8 lock washer and #8 flat washers (not
provided).
2. Connect other end of the ground cable to a nearby building exterior ground location.
580-00517, rev B
20
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.8 Ice Shield Canopy Installation
The Ice Shield assembly is an optional item and can be ordered in
kit form through a BridgeWave distributor.
3.8.1 Introduction
In northern climates, the buildup of ice or snow on antennas can be a problem for millimeter wave
radio installations. These problems are twofold: the electrical effect of snow and ice built up on the
antenna’s radome; and the mechanical impact of the additional weight of the snow or ice on the
antenna and supporting structure.
The formation of ice or snow on the antennas radome can cause attenuation of the signal to the point
where the link may become severely degraded or unusable. Uneven ice buildup can cause scattering of
the signal, which in turn results in standing waves.
Ice layers are not likely to exist for extended periods, as ice tends to melt. In cold climates when the
radome is below freezing temperature, ice does not stick to it, thus there is no issue. However in
mixed rain-snow-ice storms, ice can stick to the radome, causing the link to operate at less than its
optimal design.
Once the ice has hardened and freezes, the added weight of the ice on the antenna increases the wind
load on the tower or mast, which may cause premature failure of the mounting structure. As ice breaks
apart due to melting, or via its own weight, these large and heavy sheets falling down a tower or mast
can cause damage to antennas or other objects mounted below.
BridgeWave provides an ice shield kit, designed to combat the buildup of ice on BridgeWave’s
wireless bridges. These inexpensive ice shields are easily fitted on the radios during the installation
process.
21
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Figure 3.8.1-1: 60X Ice Shield
3.8.2 Optional Kit
The part number for this kit is 515-00529 (Available through Sales, see contact information section)
Refer to the table below for the kit required for your particular application. Each kit contains the
necessary materials for the installation of the ice shield on one radio. Two kits are required per link.
Qty: Description:
1 ea. Ice Shield Canopy
1 ea. Ice Shield Clamp, 6’
3.8.3 Installation Instructions
1. Remove the protective liner from the plastic canopy.
2. Use a screwdriver or 5/16” nut driver to set the hose clamp to the end of its range for
maximum opening.
3. Slip the hose clamp over the radome so that it loosely sits in approximately the middle of the
radome.
4. Slide one end of the plastic canopy under the clamp and slowly bend it around the canopy and
work it under the rest of the clamp.
580-00517, rev B
22
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
5. Align the canopy to the back edge of the radome and position the clamp 1 to 3” away from the
edge.
6. Tighten the clamp until snug. (Do Not Overtighten)
Remove canopy when its not snowing to reduce antenna wind
loading
23
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.9 Antenna Alignment
1. Finish the installation as described in Chapter 3.6 and 3.7
2. Ensure fiber cables are still disconnected!
3. Connect DC power to the radio.
4. Verify that the Power LED is lit. If the Power LED is not lit, use voltmeter to verify correct
voltage and polarity at radio. To reverse the power polarity, unplug the power jack and swap the
two conductors.
5. Repeat steps 1 through 4 on other side of the link.
6. Connect QUAL and RSL test cable to the radio.
7. Slightly rotate each antenna up/down and left/right to find the maximum RSL voltage reading. To
ensure that the antennas are not aligned on a side-lobe, they must be rotated at least ten degrees on
each side of the visually-perceived alignment center to ensure that the true maximum RSL voltage
is found; note that the width of the center beam is only 0.6 degrees and the first side-lobe beam is
only 1.5 degrees off from center. Set the antenna in the position that results in the highest RSL
voltage reading. See Section 3.9 to determine the proper use of the supplied test cable in order to
read the RSL voltage.
Verify that the RSL voltage falls within the expected range based
on the graph in Appendix B.
8. Ensure all bolts are tightened securely and the RSL voltage remains unchanged during tightening.
Keep in mind that it is very important that the azimuth bolts are tightened before any adjustment
on the elevation is done. The very narrow beamwidth of this antenna (0.6º) makes it necessary to
completely tighten the bolts of the azimuth adjustment while adjusting the elevation and vice
versa.
9. Connect the fiber cable to one of the radios at a time. The fibers should already be connected to
active network equipment. If the unit is not to be connected using fiber cabling, a temporary
loopback fiber must be used to perform this operation.
10. Verify the Fiber LED’s on each radio are illuminated solid.
The fiber integrity indication on the network equipment could
show up or down independent of the link status. Once the radio
link is up and network equipment connected on both sides of the
link the network equipment should indicate fiber integrity.
580-00517, rev B
24
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
11. Once the fiber is connected to the radio, the radio will begin an internal link calibration. During
this time the Link Up LED will blink for approximately 120 seconds for the AR60X.
12. Wait until the Link Up LED is lit solid on both radios.
13. Verify the Link Quality voltage is 3.3V (i.e., error free). Repeat steps 10-13 for the second radio.
When a radio is power cycled, it will execute a limited version of
the calibration process. After this time, the link should be
functioning. This limited automatic calibration process is also
activated if the link is down for more than 5minutes .
14. Remove the test cable from the radio, replace the rear plastic cover and use a wrench
to tighten the back cover nut to the point where the back cover stops (i.e., when it hits the metal
ring on the back metal plate). The installation is now complete.
Auto Calibration States
State
Description
Unit powered up no
fiber connected
Unit will be in alignment mode, there will be no automatic
calibration event started until the fiber is connected
Unit powered up then The radio will perform a single calibration scan and will then go
fiber cable connected
for the first time
Normal operation
mode
into normal operation mode, regardless of the results of the
scan. (Link up or down status has no influence on the scan)
Disconnecting and reconnecting the fiber cables will not cause a
recalibration. A recalibration will only happen if the link is
down for more then 50 seconds.
Forced Recalibration
Power cycling the radio and disconnecting then reconnecting
the fiber to the powered up radio will start the auto calibration
routine again. If the fiber cables stay disconnected the radio will
go back into alignment mode.
25
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.3
3.0
Correctable Errors Detected
NO
ERRORS
2.0
1.7
Uncorrectable Errors Detected
CORRECTED
ERRORS
UNCORRECTED
ERRORS
0.3
0.0
Deframer Unlocked (Link Down)
0
0
Errors
Figure 3-10 Quality Voltage Graph
• Quality Voltages between 3.0V and 3.3V indicate an error-free wireless link.
• Quality Voltages between 1.5V and 3.0V indicate a low rate of errors, that the forward error
correction will correct. The lower the voltage, the more errors are being corrected.
• Quality Voltages between 0.5V and 1.0V indicate excessive errors in the wireless link that can
not be corrected by the FEC. To indicate this change in error performance, the quality voltage
will drop from 1.5V to 1.0V in a single step.
• Quality Voltages below 0.5V indicate an unlocked deframer condition. This will be recognized
as a link-down condition.
580-00517, rev B
26
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
3.10QUAL and RSL Test Cable
The alignment procedure is optimized through the use of the provided test cable. This test cable is
designed for use with a digital voltmeter (not provided) to read the Link Quality and Receive Signal
Level (RSL) voltage generated by the radio’s receiver.
1.
To read the RSL value of the radio, insert GND (ground) and RSL banana plugs into the
voltmeter. Note the RSL voltage. The voltage may be fluctuating; in this case, note the
maximum value seen.
Figure 3-15: Top view of test cable provided to check Link Quality & Receive Signal level
2.
To read the Link Quality value of the radio, insert GND (ground) and QUAL banana plugs into
the voltmeter. Note the Link Quality voltage. After the radios have performed an auto calibration
the quality voltage should read 3.3V if the link is aligned on the main antenna beam and there
are no obstructions (i.e., trees, buildings, etc…) in the path, the link distance is within the
operating parameters of the radio (see Section 2.4 above), and it is not raining heavily. AR
radios may have less than 3.3V Quality in 1000 Mbps mode and still operate normally; this
would indicate that the AR link is operating near the distance limit for Gigabit Ethernet
performance.
27
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
4 Radio Link Status Indicators
During normal operation, the following conditions should exist at the radio:
• The power LED should be lit—solid green;
• The fiber LED should be lit—solid green;
• The Link Up LED should be lit—solid green;
• The Link Quality BER voltage should be 3.3V, although dips in voltage are acceptable
during periods of precipitation.
• 10/100Base-T LEDs (each side next to socket opening); left should be green if connected
(link up) and right flashing yellow indicates activity
Figure 4-1: Link Up, Fiber and Power LED’s indicating link is up and operating
The radios do not require periodic maintenance. However, each end of the link should be periodically
inspected for visible damage or excessive accumulation of dirt on the antenna’s radome.
580-00517, rev B
28
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
5 Connecting Network Equipment
The user networking equipment that is connected to the radio should be checked to ensure it operates
properly over a wired connection. Once this has been confirmed this will save troubleshooting steps
after the radio is installed and connected to the network equipment.
We recommend the network equipment on both sides of the link be configured as follows:
• 1000 Mbps full-duplex
• Port auto-negotiation and flow control enabled
• Port configured to not enter error-disable state due to link up/down transitions
(since these may occur during periods of very heavy rain)
It is possible to disable auto-negotiation on the radio’s fiber
interface by use of the built-in Network Management interface.
The radio’s 10/100Base-T port is permanently set to auto-
negotiate.
5.1 Network Port Statistics
In the event the network equipment connected to the AR60X offers the capability below, we
recommend you verify the following on the network equipment:
• Link integrity
• There are no receive errors on the link
• Network traffic is flowing in both directions.
The radios support all standard Ethernet frame sizes, up to 1632
bytes for un-tagged or 802.1q VLAN-tagged frames.
29
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Appendix A: Troubleshooting
The following table provides a summary of possible problems you might encounter while installing a
BridgeWave AR60X link, along with possible causes and their solutions.
Extensive troubleshooting support and knowledgebase articles are
available at the BridgeWave eSupport knowledgebase online at:
Contact BridgeWave support to obtain a login account.
Problem
No power to radio
Possible Cause
Wrong polarity of supply
voltage
Resolution
Use a DVM to determine the
polarity and voltage on the DC
cable. (See Section 2.6)
The supply voltage measured The cable run is too long or the
at the radio (when
connected) is below 15Vdc
cable gauge is too small.
Shorten the length of the cable
or use larger gauge cable. (See
Section 2.6)
Fiber light lit at radio
but not on network
equipment
LSP is enabled and radio link This is normal behavior.
is down.
TX and RX fibers are
swapped.
Try swapping the TX and RX
fibers at one/both ends of the
connection.
Error in the configuration of Verify the configuration of the
the networking equipment.
network equipment is consistent
with radio unit’s fiber port
settings (auto-negotiation and
flow control).
One or both of the fibers
Use a loopback connector at the
have been damaged or is not radio to verify the radio is OK,
connected at both ends.
repeat at the networking
equipment. Visually inspect the
fiber cable.
Cannot establish the
wireless link
Units are not properly
aligned
The two units are not set to the
same polarization. Verify and if
necessary correct the
polarization setting. (See
Section 3.6)
Obstacle in link
Verify the line of sight
conditions and check for
required clearance (See Section
2.3).
580-00517, rev B
30
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
RSL voltage lower
then expected
Incorrect calculation of link
distance
Verify that the calculation tool
used and the GPS used both use
the same annotation system
(degree hours minutes seconds
or degree with a decimal value)
Realign antenna to main lobe.
Keep in mind that the side lobe
is only 1 degree from the main
lobe.
Antennas aligned on side
lobes
Antennas set to different
polarizations
Verify that both radios are set to
the same polarization. (see
Section 3.6)
Installed two high or low
band radios in one link
Verify that one end of the link is
high and the other end is a low
band radio (see Section 3.6)
Verify that maximum path
length has not been exceeded
Link exceeds maximum
specified range
Low link quality
voltage
Antennas are not aligned for Verify antenna alignment, using
maximum RSL
instructions provided in section
3.6.
Auto-calibration not
completed
Power cycle units to force auto
calibration cycles. (see Section
3.8)
Interference
Check for possible interference
by turning off the radio at the
other end of the link and verify
the RSL voltage on the local
side drops below 0.2V
Wireless link
established but no data configuration and radio
transfer over the link
Network equipment
Verify settings on network
equipment to be consistent with
radio units fiber port settings.
Verify network equipment port
configured to not enter error-
disable state due to link
up/down transitions
configuration incompatible
(see Section 4.1)
31
580-00517, rev B
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
Appendix B: RSL Voltage vs. Distance
)
V ( e g a t l o V L S
R
580-00517, rev B
32
Download from Www.Somanuals.com. All Manuals Search And Download.
Std. Limited Warranty & SW License
THE FOLLOWING WARRANTY AND SOFTWARE LICENSE GRANT APPLY ONLY FOR BRIDGEWAVE
COMMUNICATIONS, INC. (“BRIDGEWAVE”) PRODUCTS PURCHASED THROUGH BRIDGEWAVE AUTHORIZED
CHANNEL PARTNERS WITHIN THE UNITED STATES OR CANADA BY THE ORIGINAL END PURCHASER
(“BUYER”). IF BRIDGEWAVE PRODUCTS WERE OBTAINED THROUGH OTHER CHANNELS, THE FOLLOWING
PROVISIONS DO NOT APPLY AND THE SELLING PARTY SHOULD BE CONTACTED FOR INFORMATION ON
ANY PRODUCT WARRANTIES AVAILABLE.
The following terms apply to the Buyer’s use of BridgeWave hardware products (“Products”) and software products (“Software”), except to the extent
otherwise provided in (a) a separate written agreement between Buyer and BridgeWave or (b) a “click-on” license agreement as part of the installation
and/or downloading process for a particular Software. To the extent of a conflict between the provisions of these documents, the order of precedence
shall be (1) the written agreement, (2) the click-on license agreement, and (3) this Limited Warranty and Software License.
LIMITED HARDWARE WARRANTY
Limited Hardware Warranty. Subject to limitations below, for a period of twelve (12) months (the “Warranty Period”) after shipment to Buyer of
the Hardware by BridgeWave or an authorized distributor of BridgeWave products, BridgeWave warrants that the Products, under normal use and
service, shall be free in all material respects from defective design, material and faulty workmanship and shall operate in all material respects in
compliance with the functional specifications, designs, installation instructions, Product descriptions or technical requirements published by
BridgeWave in its Product Manual (“Specifications”). The foregoing warranty includes Basic Support Services (as defined at www.BridgeWave.com)
from BridgeWave during the Warranty Period. These warranties are provided for the benefit of the original Buyer only. Except for the foregoing
warranties, the Products are supplied “AS IS”.
Remedies for Breach of BridgeWave Warranty. If a Product is in breach of BridgeWave’s warranty during the Warranty Period, BridgeWave shall,
as the sole and exclusive remedy, within thirty (30) calendar days after BridgeWave’s receipt of the returned Product, repair, replace (with new or
refurbished units) or modify, as BridgeWave may solely elect, the Product as necessary so that the Product complies with the applicable Warranty, or
at BridgeWave’s option, refund to the Buyer the Buyer’s purchase price paid for the Product. Before returning any Products to BridgeWave, Buyer
to BridgeWave must be shipped according to BridgeWave’s instructions with a properly issued RMA number clearly visible on the outside of the
packaging. All Products returned to BridgeWave shall be shipped DDP (Delivery and Duties Paid) by Buyer to BridgeWave’s designated service
facility. BridgeWave shall prepay return freight charges on repaired or replaced Products when BridgeWave determines, in its sole judgment that a
breach of warranty occurred. BridgeWave may charge its standard rates for any repair or replacement work performed on returned Product that was
not in breach of the warranties herein.
Replacement Product Warranty. The Warranty Period of replacement Product (whether new or refurbished) shall commence upon the shipment of
the replacement Product to Buyer and shall expire on the later of ninety (90) days after shipment date or the last day of the original Warranty Period
with respect to the replaced Product. All replaced parts or Product shall become the property of BridgeWave.
Limitation on Warranty. Except where they are embedded in the Products, non-BridgeWave manufactured products provided to Buyer are excluded
from any BridgeWave warranty, but may be subject to a warranty provided by the original manufacturer. BridgeWave shall supply a copy of any such
warranty to Buyer on specific written request. BridgeWave warranties are void if: (a) Buyer integrates or assembles the Product with other products
unless integrated or assembled in accordance with applicable Specifications; (b) the Product is wired, repaired or altered by anyone other than
BridgeWave or an authorized representative of BridgeWave in strict accordance with the applicable Specifications; (c) the Product is improperly
handled, stored, installed or maintained; (d) the Product is used in violation of the applicable Specifications or BridgeWave’s instructions or subjected
to misuse, neglect, accident, abuse or suffers damage due to acts of nature; or (e) the Product is disassembled or its housings are removed by any
person other than a BridgeWave-authorized technician.
EXCLUSION OF CERTAIN WARRANTIES. THE FOREGOING WARRANTIES ARE IN LIEU OF AND EXCLUDE ALL OTHER EXPRESS
AND IMPLIED REPRESENTATION OR WARRANTIES, INCLUDING BUT NOT LIMITED TO, PRODUCT NON-INFRINGEMENT, OR
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, SATISFACTORY QUALITY, ERROR FREE NON-
INTERRUPTED OPERATIONS, PROTECTION FROM UNAUTHORIZED INTRUSION OR ATTACK OR OPERATION AT A SPECIFIED
RANGE OR SIGNAL AVAILABILITY OR ARISING FROM A COURSE OF DEALING, LAW, USAGE OR TRADE PRACTICE. AS EACH
PRODUCT IS UNIQUE, BRIDGEWAVE DISCLAIMS LIABILITY FOR OPERATION OF THE END USER NETWORK AS A WHOLE UNDER
ANY WARRANTY PROVIDED HEREIN. TO THE EXTENT A WARRANTY CANNOT BE EXCLUDED BY LAW, SUCH WARRANTY IS
LIMITED IN DURATION TO THE WARRANTY PERIOD. BECAUSE SOME STATES OR JURISDICTIONS DO NOT ALLOW
LIMITATIONS ON WARRANTY DURATION, THE ABOVE LIMITATION MAY NOT APPLY. THIS WARRANTY GIVES SPECIFIC LEGAL
RIGHTS WHICH MAY BE IN ADDITION TO OTHER RIGHTS WHICH VARY FROM JURISDICTION TO JURISDICTION. THIS
DISCLAIMER AND EXCLUSION SHALL APPLY EVEN IF THE EXPRESS WARRANTY SET FORTH ABOVE FAILS OF ITS ESSENTIAL
PURPOSE.
SOFTWARE LICENSE
Software License. BridgeWave provides Buyer a non-exclusive, non-transferable limited license (“License”) to use, solely as embedded in, for
execution on or for communication with the Products, the object code (and not the source code) of its Software. For purposes of this License,
Software shall include any BridgeWave provided documentation, component parts, user interfaces, modifications, upgrades, updates, bug fixes,
corrections, backup copies and new releases. Buyer’s use of the Software shall also be limited by any other restrictions set forth in BridgeWave’s
quotation or in BridgeWave’s product catalog, user documentation or web site.
Title to Software. Title to the Software, and to any source code for the Software, shall at all times remain solely and exclusively with BridgeWave.
Buyer agrees not to take any action inconsistent with such title. Buyer agrees that the Software, including the design and structure of individual
programs, constitutes the trade secrets or copyrighted material of BridgeWave. Buyer agrees not to disclose such material in any form to any third
party and to implement reasonable security measures to protect such material.
580-00517, rev B
33
Download from Www.Somanuals.com. All Manuals Search And Download.
AR60X Installation Manual
License Restrictions. BridgeWave reserves all other rights to the Software not specifically licensed hereunder. Buyer has no right to, and agrees not
to sell, transfer, rent, copy, reverse engineer, reverse compile, decrypt, or reduce to human readable form to gain access to trade secrets or confidential
information, modify or create derivative works of, or grant to any third party any rights in the Software, or permit any third party to do any of these
prohibited acts, without BridgeWave’s prior written consent. Buyer agrees to protect the Software licensed hereunder in a manner consistent with the
maintenance of BridgeWave’s ownership and proprietary rights therein, including displaying of any copyright and trademark notices in all Software
as incorporated by BridgeWave.
Term and Termination. This License is effective until terminated. Buyer may terminate this License at any time, provided that Buyer’s termination
does not entitle Buyer to any refund of purchase or license fees. BridgeWave may terminate Buyer’s rights under this License immediately upon
written notice if Buyer fails to comply with any provision of this License. Upon termination, Buyer must destroy all copies of Software in its
possession or control.
Export. Software and Products, including technical data, may be subject to U.S. export control laws, including the U.S. Export Administration Act
and its associated regulations, and may be subject to export or import regulations in other countries. Buyer agrees to comply strictly with all such
regulations and acknowledges that Buyer has the responsibility to obtain licenses to export, re-export, or import Software and Products.
Restricted Rights. BridgeWave’s commercial software and commercial computer software documentation is provided to United States Government
agencies in accordance with the terms of this Limited Hardware Warranty and Software License, and per subparagraph “©” of the “Commercial
Computer Software – Restricted Rights” clause at FAR 52.227-19 (June 1987). For DOD agencies, the restrictions set forth in the “technical Data-
Commercial Items” clause at DFARS 252.227-7015 (Nov 1995) shall also apply.
LIMITATION OF REMEDY AND LIABILITY PROVISIONS
EXCLUSIVE REMEDIES. THE REMEDIES SET FORTH IN THIS LIMITED WARRANTY AND SOFTWARE LICENSE ESTABLISH THE
ENTIRE OBLIGATION OF BRIDGEWAVE AND BUYER’S SOLE REMEDY IN REGARD TO CLAIMS RELATING TO BREACH OF
WARRANTY OR INTELLECTUAL PROPERTY RIGHTS INCLUDING BUT NOT LIMITED TO CLAIMS DIRECTED TO THE
INFRINGEMENT OR MISAPPROPRIATION OF PATENTS, COPYRIGHTS, TRADE SECRETS AND OTHER PROPRIETARY RIGHTS FOR
THE PRODUCTS.
NO CONSEQUENTIAL DAMAGES. IN NO EVENT SHALL EITHER PARTY, OR EITHER PARTY’S SUPPLIERS, OFFICERS,
DIRECTORS, EMPLOYEES, AGENTS, SHAREHOLDERS OR CONTRACTORS (“RELATED PARTIES”), BE LIABLE TO THE OTHER
PARTY OR ITS RELATED PARTIES FOR CONSEQUENTIAL, INDIRECT, INCIDENTAL, SPECIAL, PUNITIVE OR EXEMPLARY
DAMAGES OR FOR COST OF COVER, LOST REVENUES, LOST PROFITS OR LOST DATA OR OTHER ECONOMIC LOSS ARISING
FROM ANY CAUSE INCLUDING BUT NOT LIMITED TO BREACH OF WARRANTY, BREACH OF CONTRACT, TORT, STRICT
LIABILITY, OR FAILURE OF ESSENTIAL PURPOSE EVEN IF BRIDGEWAVE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. THE FOREGOING LIMITATIONS SHALL APPLY EVEN IF THE ABOVE-STATED WARRANTY FAILS OF ITS ESSENTIAL
PURPOSE. BECAUSE SOME STATES OR JURISDICTIONS DO NOT ALLOW LIMITATIONS OR EXCLUSIONS OF CONSEQUENTIAL OR
INCIDENTAL DAMAGES, THE ABOVE LIMITATION MAY NOT APPLY TO BUYER.
LIMIT ON LIABILITY. THE MAXIMUM LIABILITY OF BRIDGEWAVE, AND ITS RELATED PARTIES, TAKEN AS A WHOLE, FOR
ANY AND ALL CLAIMS IN CONNECTION WITH THE PRODUCTS AND SOFTWARE, INCLUDING BUT NOT LIMITED TO CLAIMS FOR
BREACH OF WARRANTY, BREACH OF CONTRACT, TORT, STRICT LIABILITY, FAILURE OF ESSENTIAL PURPOSE OR OTHERWISE,
SHALL IN NO CIRCUMSTANCE EXCEED THE PURCHASE PRICE PAID BY BUYER TO BRIDGEWAVE OR BRIDGEWAVE’S
AUTHORIZED CHANNEL PARTNERS FOR THE PRODUCTS AND SOFTWARE.
Statute of Limitations. Any action for breach of or to enforce any right under this Limited Hardware Warranty or Software License shall be
commenced within one (1) year after the cause of action accrues, or reasonably could have been discovered, or it shall be deemed waived and barred.
Administrative Provisions. This Limited Hardware Warranty and Software License shall be governed by and construed in accordance with the laws
of the State of California, without reference to principles of conflict of laws, provided that for customers located in a member state of the European
Union, Norway or Switzerland, English law shall apply. The United Nations Convention on the International Sale of Goods shall not apply. If any
portion hereof is found to be void or unenforceable, the remaining provisions of the Limited Hardware Warranty and Software License shall remain in
full force and effect. Except as expressly provided herein, the Limited Hardware Warranty and Software License constitutes the entire agreement
between the parties with respect to warranties on the Hardware and Licensing of the Software, and supersedes any conflicting or additional terms
contained in any prior or contemporaneous discussion, negotiation or agreement, including those in any purchase order or order acknowledgment.
580-00517, rev B
34
Download from Www.Somanuals.com. All Manuals Search And Download.
|
