Cambium PTP 650 User manual

Cambium
PTP 650
Installation Guide

Accuracy
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High Risk Use.
Page 2

About this guide
This guide is supplied with PTP 650 ODUs. It describes how to install the site equipment for
PTP 650 Series links. Users of this guide must follow good practice for outdoor radio
installations.
In more advanced configurations, there may be one or two additional Ethernet interfaces
connected to the ODU: one to the SFP port (copper or optical) and one to the AUX port. For
details of these configurations, refer to the PTP 650 Series User Guide.
Related documents
For full PTP 650 installation planning instructions and a list of components, refer to the PTP 650
Series User Guide.
Version information
Document number and version: phn-3510_003v000 (February 2014).
Waste Electrical and Electronic Equipment (WEEE)
For instructions on waste disposal of used products, refer to
http://www.cambiumnetworks.com/support/weee-compliance
Safety
Warning
To prevent loss of life or physical injury, observe the safety guidelines below. In no
event shall Cambium Networks be liable for any injury or damage caused during the
installation of the Cambium PTP 650. Ensure that only qualified personnel install a
PTP 650 link.
Power lines
Exercise extreme care when working near power lines.
Working at heights
Exercise extreme care when working at heights.
PSU
Always use one of the Cambium PTP 650 Series power supply units (PSU) to power the ODU.
Failure to use a Cambium supplied PSU could result in equipment damage and will invalidate
the safety certification and may cause a safety hazard.
Page 3

Grounding and protective earth
The Outdoor Unit (ODU) must be properly grounded to protect against lightning. It is the user’s
responsibility to install the equipment in accordance with national regulations. In the USA follow
the requirements of the National Electrical code NFPA 70-2005 and 780-2004 Installation of
Lightning Protection Systems. In Canada, follow Section 54 of the Canadian Electrical Code.
These codes describe correct installation procedures for grounding the outdoor unit, mast,
lead-in wire and discharge unit, size of grounding conductors and connection requirements for
grounding electrodes. Other regulations may apply in different countries and therefore it is
recommended that installation of the outdoor unit be contracted to a professional installer.
DC supply
To power the ODU from a DC supply, use the AC+DC enhanced power injector (PSU) (Cambium
part number C000065L002). Ensure that the DC power supply meets the requirements specified
in the PTP 650 Series User Guide.
Powering down before servicing
Before servicing PTP 650 equipment, always switch off the power supply and unplug it from the
PSU.
Do not disconnect the RJ45 drop cable connectors from the ODU while the PSU is connected to
the power supply. Always remove the AC or DC input power from the PSU.
Primary disconnect device
The main power supply is the primary disconnect device. The AC-DC enhanced power injector is
fused on the DC input. Some installations will also require an additional circuit breaker or
isolation switch to be fitted in the DC supply.
External cables
Safety may be compromised if outdoor rated cables are not used for connections that will be
exposed to the outdoor environment. For outdoor copper Cat5e Ethernet interfaces, always use
Cat5e cable that is gel-filled and shielded with copper-plated steel. Alternative types of drop
cable are not supported by Cambium Networks.
Drop cable tester
The drop cable tester must NEVER be used at the ODU end connected to the power supply from
the PSU. It must only be used at the bottom of the mast with a multimeter. This is because the
PSU voltage exceeds the limit allowed in some countries for safe handling in wet conditions and
therefore may create a safety hazard.
RF exposure near the antenna
Strong radio frequency (RF) fields will be present close to the antenna when the transmitter is
on. Always turn off the power to the ODU before undertaking maintenance activities in front of
the antenna.
Minimum separation distances
Ensure that personnel are not exposed to unsafe levels of RF energy. The units start to radiate RF
energy as soon as they are powered up. Never work in front of the antenna when the ODU is
powered. Install the ODUs so as to provide and maintain the minimum separation distances
from all persons. For minimum separation distances, see the PTP 650 Series User Guide.
Page 4

Grounding and lightning protection requirements
Ensure that the installation meets the requirements defined in the PTP 650 Series User Guide.
Grounding cable installation methods
To provide effective protection against lightning induced surges, observe these requirements:
•Grounding conductor runs must be as short, straight and smooth as possible, with bends
and curves kept to a minimum.
•Grounding cables must not be installed with drip loops.
•All bends must have a minimum radius of 203 mm (8 in) and a minimum angle of 90°. A
diagonal run is preferable to a bend, even though it does not follow the contour or run
parallel to the supporting structure.
•All bends, curves and connections must be routed towards the grounding electrode system,
ground rod, or ground bar.
•Grounding conductors must be securely fastened.
•Braided grounding conductors must not be used.
•Approved bonding techniques must be used for the connection of dissimilar metals.
Siting ODUs and antennas
ODUs and external antennas are not designed to survive direct lightning strike. For this reason
they must be installed in Zone B as defined in PTP 650 Series User Guide. Mounting in Zone A
may put equipment, structures and life at risk.
Page 5

Typical deployment
A PTP 650 site typically consists of a high supporting structure such as a mast, tower or building
for the outdoor equipment (ODU and optional external antenna); and an equipment building or
moisture-proof enclosure for the indoor equipment (PSU), as shown here in a typical mast or
tower installation:
Note
These instructions assume that LPUs are being installed from the PTP 650 LPU and grounding
kit (Cambium part number C000065L007). If the installation does not require LPUs, adapt these
instructions as appropriate.
If LPUs are being installed, only use the five black-capped EMC cable glands supplied in the
LPU and grounding kit. The silver-capped cable glands supplied in the ODU kits must only be
used in PTP 650 installations which do not require LPUs.
Building
entry
Ground ring
PSU
First point of contact
between drop cable and
tower
ODU
Network
equipment
Bottom LPU
Top LPU
Intermediate ground
cable(s) as required
AC/DC Supply
Equipment building or cabinet
Tower ground bar
PTP650 Ground cables
Power over Ethernet CAT5e cable(gel-
filled shielded with copper-plated steel)
Site grounding system
Network CAT5e cable
Page 6

ODU variants and mounting bracket options
ODU variants
The PTP 650 ODU is supplied in three configurations:
•A PTP 650 integrated ODU attached to a 23dBi flat plate antenna
•A PTP 650S integrated ODU attached to a 19dBi flat plate antenna
•A PTP 650 connectorized ODU intended to work with separately mounted external antennas.
Mounting bracket options
The PTP 650 series supports five mounting bracket options. Select the optimum mounting
bracket arrangement based on the pole diameter and the ODU variant:
Bracket
Pole diameter
ODU variants
Bracket part
number
Mounting bracket
(integrated)
40 mm to 76 mm
(1.6 inches to 3.0 inches)
PTP 650 Integrated
PTP 650S Integrated
N000065L031
Mounting bracket
(connectorized)
40 mm to 76 mm
(1.6 inches to 3.0 inches)
PTP 650 Connectorized N000065L032
Extended integrated
mounting bracket
89 mm or 114 mm
(3.5 inches or 4.5 inches)
PTP 650 Integrated
PTP 650S Integrated
PTP 650 Connectorized
N000065L030
Mounting bracket
(integrated) with large
diameter extension kit
89 mm to 229 mm
(3.5 inches to 9.0 inches)
PTP 650 Integrated
PTP 650S Integrated
PTP 650 Connectorized
N000065L031
with
N000065L042
Low profile bracket 40 mm to 76 mm
(1.6 inches to 3.0 inches)
PTP 650S Integrated N000065L039
89 mm to 229 mm
(3.5 inches to 9.0 inches)
The low profile bracket provides elevation adjustment with the PTP 650S Integrated ODU of +10°
to –5° or +5° to –10°. A larger adjustment range is available using the standard integrated
mounting bracket. The connectorized mounting bracket does not provide elevation adjustment.
Note
The connectorized mounting bracket is included with the PTP 650 connectorized ODU. Order a
bracket separately for PTP 650 or PTP 650S integrated ODUs.
Page 7

Installing the ODU and top LPU
Attach ground cables to the ODU
1
Fasten one ground cable to each ODU grounding point
using the M6 (small) lugs: one
is for the top LPU (M6 lug at other end) and the other is for the tower or building (M10
lug at other end). It does not matter which cable goes on which ODU grounding point.
2
T
ighten both ODU grounding bolts to a torque of 5.0 Nm (3.9 lb ft).
Mount the ODU on the mast
Select the most appropriate bracket mounting arrangement from the options listed in Mounting
bracket options on page 7.
Refer to individual procedures below for each of the options:
•Mounting bracket (integrated) on page 9
•Mounting bracket (connectorized) on page 9
•Extended integrated mounting bracket on page 11
•Mounting bracket (integrated) with large diameter extension kit on page 12
•Low profile bracket on small diameter pole on page 13
•Low profile bracket on large pole on page 14
The procedure for the Mounting bracket (connectorized) can be readily adapted to attach the
ODU to a horizontal pole of similar size.
The procedure for the Mounting bracket (integrated) and the Extended integrated mounting
bracket can be adapted to attach the ODU to a suitable horizontal pole, but the adjustment of
azimuth angle is necessarily limited compared with an installation on a vertical pole.
In dense networks consider rotating an integrated ODU through 45° to reduce antenna side-lobe
responses in the horizontal plane. Further details are in the PTP 650 Series User Guide.
21
Page 8

Mounting bracket (integrated)
1
Fix the mounting plate to the back of the ODU using the four bolts, and spring and plain
washers provided. Tighten the bolts to a torque setting of 5.0 Nm (3.7 lb ft).
2
Attach the bracket body to the mounting plate using the M8 bolt, and spring and plain
washers.
3
Hoist the ODU to the mounting position.
4
Attach the bracket body to the pole using the bracket clamp, M8 bolts, and spring and plain
washers.
5
Alternatively, use the LPU in place of the clamp to provide a back-to-back arrangement.
6
Adjust the elevation and azimuth to achieve visual alignment. Tighten all three M8 bracket
bolts to a torque setting of 8.0 Nm (6.0 lb ft). Do not over-tighten the bolts as this may lead to
failure of the assembly.
7
Caution:
Do not reverse the bracket clamp, as this arrangement may lead to failure of
the assembly.
1 2
4 5
7
Page 9

Mounting bracket (connectorized)
1
Identify the square cavities in the casting on the back of the ODU. These cavities will be used
to accommodate the heads of two M8 bracket bolts.
2
Fix the mounting plate to the ODU using the four M6 bolts, and spring and plain washers
provided. Ensure that the M8 bolts are correctly held between the mounting plate and the
ODU. Tighten the M6 bolts to a torque setting of 5.0 Nm (3.7 lb ft).
3
Hoist the ODU to the mounting position.
4
Attach the bracket body to the pole using the bracket clamp, spring and plain washers, and
M8 nuts.
5
Alternatively, use the LPU in place of the clamp to provide a back-to-back arrangement.
6
Tighten the two M8 bracket bolts to a torque setting of 8.0 Nm (6.0 lb ft). Do not over-tighten
the bolts as this may lead to failure of the assembly.
1 2
45
Page 10

Extended integrated mounting bracket
1
Fix the mounting plate to the back of the ODU using the four M6 bolts, and spring and plain
washers provided. Tighten the bolts to a torque setting of 5.0 Nm (3.7 lb ft). The step is
common with the standard integrated bracket.
2
Attach the bracket body of the extended bracket on the mounting plate on the ODU to using
the M8 bolt and spring and plain washer.
3
Hoist the ODU to the mounting position.
4
Select the correct clamp. The larger clamp is intended for poles of diameter 114 mm (4.5
inches). The smaller clamp is intended for poles of diameter 89 mm (3.5 inches).
5
Attach the bracket body to the pole using the selected bracket clamp, washers and M8 bolts.
6
Adjust the elevation and azimuth to achieve visual alignment. Tighten all three M8 bracket
bolts to a torque setting of 8.0 Nm (6.0 lb ft). Do not over-tighten the bolts as this may lead to
failure of the assembly.
1
2
5
Page 11

Mounting bracket (integrated) with large diameter extension kit
1
Fix the mounting plate to the back of the ODU using the bolts and washers provided. Tighten
the four bolts to a torque setting of 5.0 Nm (3.7 lb ft). Attach the bracket body to the
mounting plate using the M8 bolt and spring and plain washer. This is equivalent to the first
two steps for the standard integrated bracket.
2
Attach the adaptor plate of the large diameter extension kit to the bracket body using the
bolts and washers provided. Tighten the two bolts to a torque setting of 5.0 Nm (3.7 lb ft).
3
Feed the Jubilee straps through the slots in the adaptor plate.
4
Hoist the ODU to the mounting position.
5
Attach the adaptor plate to the pole using the Jubilee straps.
6
Adjust the azimuth to achieve visual alignment. Tighten the Jubilee straps to a torque setting
of 6.0 Nm (4.5 lb ft).
7
Adjust the elevation to achieve visual alignment. Tighten M8 bracket bolt to a torque setting
of 8.0 Nm (6.0 lb ft). Do not over-tighten this bolt as this may lead to failure of the assembly.
1 2
3
5
Page 12

Low profile bracket on small diameter pole
1
Fix the low profile bracket to the back of the ODU using the M6 bolts and washers provided.
Tighten the four bolts to a torque setting of 5.0 Nm (3.7 lb ft).
2
Pass the M8 coach bolts through the square holes in the hinged portion of the bracket. Close
the bracket. Two M6 bolts should pass through slots in the fixed portion of the bracket.
Ensure that the spring and plain washers of the M6 bolts are on the outside of the bracket
assembly. Tighten the four M6 bolts to ensure that the bracket cannot open accidentally.
3
Hoist the ODU to the mounting position.
4
Attach the bracket to the pole using the bracket clamp, washers and M8 nuts.
5
Alternatively, use the LPU in place of the clamp to provide a back-to-back arrangement.
6
Adjust the azimuth to achieve visual alignment. Tighten the two M8 bracket nuts to a torque
setting of 8.0 Nm (6.0 lb ft). Do not over-tighten these nuts as this may lead to failure of the
assembly.
7
Adjust the elevation to achieve visual alignment. Tighten the four M6 bolts to a torque
setting of 5.0 Nm (3.7 lb ft).
1 2
4
5
Page 13

Low profile bracket on large pole
1
Fix the low profile bracket to the back of the ODU using the M6 bolts and washers provided.
Tighten the four bolts to a torque setting of 5.0 Nm (3.7 lb ft). This step is common with the
low profile bracket on a smaller diameter pole.
2
Close the bracket. Two M6 bolts should pass through slots in the fixed portion of the bracket.
Ensure that the spring and plain washers of the M6 bolts are on the outside of the bracket
assembly. Tighten the four M6 bolts to ensure that the bracket cannot open accidentally.
Feed the Jubilee straps through the slots in the adaptor plate. This is similar to the procedure
for the large diameter extension kit.
3
Hoist the ODU to the mounting position.
4
Attach the bracket to the pole using the Jubilee straps.
5
Adjust the azimuth to achieve visual alignment. Tighten the Jubilee straps to a torque setting
of 6.0 Nm (4.5 lb ft).
6
Adjust the elevation to achieve visual alignment. Tighten the four M6 bolts to a torque
setting of 5.0 Nm (3.7 lb ft).
1
4
Page 14

Mount the top LPU
1
For separate LPU mounting, use the U
-
bolt bracket from the LPU kit to mount the top LPU
on the pole below the ODU. Tighten
to a torque setting of 7.0 Nm (5.2 lb ft):
Interconnect and ground the ODU and top LPU
Page 15

Caution
Do not attach grounding cables to the ODU mounting bracket bolts, as this arrangement
will not provide full protection.
1
Fasten the ODU grounding cable to the top LPU using the M6 (small) lug.
Tighten both
nuts to a torque of 5
Nm (3.9 lb ft):
Locking nut
Washer
M6 lug
Washer
Nut
Toothed washer
M6 lug to ODU
2
Select a tower or building grounding point within 0.3 meters (1 ft) of the ODU bracket.
Remove paint from the surface and apply anti-oxidant compound. Fasten the ODU
grounding cable to this point using the M10 (large) lug.
3
If local regulations mandate the independent grounding of all devices, add a third
ground cable to connect the top LPU directly to the grounding system.
Install external antennas for a connectorized ODU
1
M
ount the antenna(s) according to manufacturer’s instructions. When using separate
antennas to achieve spatial diversity, mount
one with Horizontal polarization and the
other with Vertical polarization.
2
Connect the ODU
V and H interfaces to the antenna(s) with RF cable of type CNT-400
(Cambium part numbers 30010194001 and 30010195001) and
N type connectors
(Cambium part number 09010091001)
. Tighten the N type connectors to a torque
set
ting of 1.7 Nm (1.3 lb ft).
3
If
the ODU is mounted indoors, install lightning arrestors at the building entry point:
4
F
orm drip loops near the lower ends of the antenna cables. These
ensure that water is
not channeled towards the connector
s.
5
If the ODU is mounted outdoors, weatherproof the N type connectors
(when antenna
alignment is complete)
using PVC tape and self-amalgamating rubber tape.
6
Weatherproof the antenna
connectors in the same way (unless the antenna
manufacturer specifies a different method).
Page 16

7
Ground the antenna cables to the supporting structure within 0.3 meters (1 foot) of the
ODU and antennas
using the Cambium grounding kit (part number 01010419001):
8
Fix
the antenna cables to the supporting structure using site approved methods.
E
nsure that no undue strain is placed on the ODU or antenna connectors. Ensure that
the cables do not flap in the wind
, as flapping cables are prone to damage and induce
unwanted vibrations in the
supporting structure.
Page 17

Installing the copper Cat5e Ethernet interface
Caution
To avoid damage to the installation, do not connect or disconnect the drop cable when
power is applied to the PSU or network terminating equipment.
Caution
Do not connect the SFP or AUX drop cables to the PSU, as this may damage equipment.
Caution
Always use Cat5e cable that is gel-filled and shielded with copper-plated steel.
Alternative types of Cat5e cable are not supported by Cambium Networks. Cambium
Networks supply this cable (Cambium part numbers WB3175 and WB3176), RJ45
connectors (Cambium part number WB3177) and a crimp tool (Cambium part number
WB3211). The LPU and grounding kit contains a 600 mm length of this cable.
Install the ODU to top LPU drop cable
Fit glands to the ODU to top LPU drop cable
Fit EMC strain relief cable glands (with black caps) to both ends of the 600 mm length of
pre-terminated cable. These parts are supplied in the LPU and grounding kit.
1
Disassemble the gland and t
hread each part onto the cable (the rubber bung is split).
Assemble the spring
clip and the rubber bung:
2
Fit the parts into the body and lightly screw on the gland nut (do not tighten it):
Page 18

Connect the drop cable to the ODU (PSU port) and LPU
1
(a) Plug the RJ45 connector into the socket in the unit, ensuring that it snaps home.
(b) Fit the gland body to the RJ45 port and tighten it to a torque of 5.5 Nm
(4.3 lb ft):
(a) (b)
2
(a) Fit the gland nut and tighten until the rubber seal closes on the cable. (b) Do not
over-tighten the gland nut, as there is a risk of damage to its internal components:
(a) (b)
Correct
Incorrect
Page 19

Disconnect the drop cable from the LPU or ODU
Use this procedure if it is necessary to remove an EMC strain relief cable gland and RJ45
connector from the ODU (as illustrated) or LPU.
1
(a)
Remove the gland nut. Wiggle the drop cable to release the tension of the gland
body. When the tension in the gla
nd body is released, a gap opens at the point show.
Unscrew the gland body.
(b)
Use a small screwdriver to press the RJ45 locking tab, then remove the RJ45
connector
.
(a)
(b)
Install the main drop cable
Warning
The metal screen of the drop cable is very sharp and may cause personal injury.
•ALWAYS wear cut-resistant gloves (check the label to ensure they are cut resistant).
•ALWAYS wear protective eyewear.
•ALWAYS use a rotary blade tool to strip the cable (DO NOT use a bladed knife).
Warning
Failure to obey the following precautions may result in injury or death:
•Use the proper hoisting grip for the cable being installed. If the wrong hoisting grip
is used, slippage or insufficient gripping strength will result.
•Do not reuse hoisting grips. Used grips may have lost elasticity, stretched, or
become weakened. Reusing a grip can cause the cable to slip, break, or fall.
•The minimum requirement is one hoisting grip for each 60 m (200 ft) of cable.
Page 20