Cambium Networks PTP 670 Series User manual

INSTALLATION GUIDE
PTP 670
System Release 02-00

Page 2
Accuracy
While reasonable efforts have been made to assure the accuracy of this document, Cambium
Networks assumes no liability resulting from any inaccuracies or omissions in this document, or
from use of the information obtained herein. Cambium Networks reserves the right to make
changes to any products described herein to improve reliability, function, or design, and reserves
the right to revise this document and to make changes from time to time in content hereof with
no obligation to notify any person of revisions or changes. Cambium Networks does not assume
any liability arising out of the application or use of any product, software, or circuit described
herein; neither does it convey license under its patent rights or the rights of others. It is possible
that this publication may contain references to, or information about Cambium Networks
products (machines and programs), programming, or services that are not announced in your
country. Such references or information must not be construed to mean that Cambium Networks
intends to announce such Cambium Networks products, programming, or services in your
country.
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License Agreements
The software described in this document is the property of Cambium Networks and its licensors.
It is furnished by express license agreement only and may be used only in accordance with the
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High Risk Materials
Cambium and its supplier(s) specifically disclaim any express or implied warranty of fitness for
any high risk activities or uses of its products including, but not limited to, the operation of
nuclear facilities, aircraft navigation or aircraft communication systems, air traffic control, life
support, or weapons systems (“High Risk Use”). Any High Risk is unauthorized, is made at your
own risk and you shall be responsible for any and all losses, damage or claims arising out of any
High Risk Use.

Page 3
About this guide
This guide describes how to install the site equipment for PTP 670 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 670 Series User Guide.
Version information
Document number and version: phn-4489_002v000 (June 2017).
User documentation
For full PTP 670 installation planning instructions and a list of components, download the PTP 670 Series
User Guide from: http://support.cambiumnetworks.com/files/ptp670
Waste Electrical and Electronic Equipment (WEEE)
For instructions on waste disposal of used products, refer to
http://www.cambiumnetworks.com/support/weee-compliance
EU Declaration of Conformity
Hereby, Cambium Networks declares that the Cambium PTP 670 Series Wireless Ethernet Bridge complies
with the essential requirements and other relevant provisions of Directive 1999/5/EC. The declaration of
conformity may be consulted at: http://www.cambiumnetworks.com/support/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 670. Ensure that only qualified personnel install a
PTP 670 link.
Power lines
Exercise extreme care when working near power lines.
Working at heights
Exercise extreme care when working at heights.
PSU
Always use the AC+DC Enhanced Power Injector 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 4
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 C000065L002C). Ensure that the DC power supply meets the requirements specified in the PTP 670
Series User Guide.
Powering down before servicing
Before servicing PTP 670 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 for use with PTP 670.
Drop cable tester
A 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 670 Series User Guide.
Grounding and lightning protection requirements
Ensure that the installation meets the requirements defined in the PTP 670 Series User Guide.

Page 5
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 670 Series User Guide. Mounting in Zone A may put equipment,
structures and life at risk.

Page 6
Typical deployment
A PTP 670 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 LPU and grounding kit
(Cambium part number C000065L007A). 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 670 installations which do not require LPUs.
B ui ld in g
entry
Ground ring
PSU
First point of contact between
drop cable and tower
ODU
Netwo rk
equipment
Bottom LPU
Top LPU
Intermediate ground cable(s) as
required
AC/DC Supply
Equipment building or cabinet
Tower ground bar
PTP 670 Ground cables
Power over Ethernet CAT5e cable(gel-filled
shielded with copper-plated steel)
Site grounding system
Netwo rk CAT5e cable

Page 7
ODU variants and mounting bracket options
ODU variants
The PTP 670 ODU is supplied in two platform variants.
The PTP 670 Integrated ODU is attached to a 23 dBi flat plate antenna and is intended for medium to long-
range difficult links and traditional backhaul requirements where high capacity and high link budget are
required. The integrated antenna offers a convenient and easily-deployed solution where the additional
gain of external antennas is not needed.
Integrated ODU (4.8 to 5.9 GHz)
Integrated ODU (4.9 to 6.05 GHz)

Page 8
The PTP 670 Connectorized ODU is intended to work with separately mounted external antennas. External
antennas generally have higher gains than the integrated antennas, allowing the PTP 670 to cope with
more difficult radio conditions.
Mounting bracket options
The PTP 670 series supports three 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
Tilt Bracket Assembly 40 mm to 77 mm
(1.6 inches to 3.0 inches)
PTP 670 Integrated
PTP 670 Connectorized
N000045L002A
Tilt Bracket Assembly
with compression
straps
90 mm to 230 mm
(3.6 inches to 9.0 inches)
PTP 670 Integrated
PTP 670 Connectorized
N000045L002A + third-
party band clamps
Mounting Bracket
(Integrated)
40 mm to 82 mm
(1.6 inches to 3.2 inches)
PTP 670 Integrated N000065L031A
Note
The Tilt Bracket Assembly is included as part of the PTP 670 Integrated and Connectorized
Kits. If required, order the Mounting Bracket (Integrated) separately.
Note
The Tilt Bracket Assembly allows for elevation angle adjustment for the Integrated ODU
between –17° and +26°. The Mounting Bracket (Integrated) allows for elevation angle
adjustment between –26° and +41°.

Page 9
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 (3.7 lb ft).
12
Mount the ODU on the mast
Select the most appropriate bracket mounting arrangement from the options listed in Mounting bracket
options on page 8. Refer to individual procedures below for each of the options:
•Tilt Bracket Assembly on page 9
•Tilt Bracket Assembly with band clamps on page 10
•Mounting bracket (Integrated) on page 11
The mounting procedures 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.
Tilt Bracket Assembly
1
Fix the mounting plate of the Tilt Bracket to the back of the ODU using four of the short bolts,
ensuring that the arrow in the plate points towards the top of the ODU. Tighten the four bolts to
a torque setting of 5.0 Nm (3.7 lb ft) using a 13 mm spanner or socket.
2
Fit the two long bolts through the bracket body so that the bolt heads engage in the slots as
shown. Fit two of the short bolts into the side of the bracket body but do not tighten.
3
Thread two of the nuts to the long bolts and tighten against the bracket body using a 13 mm
spanner. Fit the bracket strap and thread the remaining nuts onto the long bolts.
4
Fix the assembled bracket body to the pole, adjust the azimuth angle, and tighten the nuts to a
torque setting of 10.0 Nm (7.4 lb ft) using a 13 mm spanner, ensuring that the arrow in the body
is pointing upwards.
5
Hoist the ODU to the mounting position. Fit the mounting plate to the bracket body by
positioning the open-ended slots over the short bolts. Insert the remaining short bolts through
the longer curved slots into the threaded holes in the bracket body. Adjust the elevation angle,
and tighten the bolts to a torque setting of 8.0 Nm (5.9 lb ft) using a 13 mm spanner or socket.

Page 10
Tilt Bracket Assembly with band clamps
1
Follow Step 1 for the Tilt Bracket Assembly procedure above.
2
Feed the band clamps (not supplied by Cambium) through the slots in the bracket body. Secure
the bracket body to the pole using band clamps, ensuring that the arrow in the body is pointing
upwards. Adjust the azimuth angle, and tighten the band clamps to a torque setting of 6.0 Nm
(4.5 lb ft).
3
Hoist the ODU to the mounting position. Fix the mounting plate to the bracket body with four of
the short bolts, using a 13 mm spanner or socket. Adjust the elevation angle, and tighten the
bolts to a torque setting of 8.0 Nm (5.9 lb ft).
1 2
34
5
2 3

Page 11
Mounting bracket (Integrated)
1
Fix the mounting plate to the back of the ODU using the four bolts, and spring and plain
washers provided. Ensure that the spring washer is between the bolt head and the plain
washer. 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, spring and plain washers.
Ensure that the spring washer is between the bolt head and the plain washer
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. Ensure that the spring washer is between the bolt head and the plain washer. For
back-to-back mounting, use the LPU in place of the clamp.
5
Adjust the elevation and azimuth to achieve visual alignment. Tighten all three bracket bolts to
a torque of 8.0 Nm (6.0 lb ft).
Caution
Do not reverse the bracket clamp, as shown in 7 above as this arrangement may lead
to failure of the assembly. Do not over-tighten the bolts as this may lead to failure of
the assembly.
12
4 5
7

Page 12
Mount the top LPU
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
Drop cable to
bottom LPU
Grounding
system
Mounting pole
LPU mounted
back-to-ba ck
with the ODU
ODU to top
LPU ground
cable
Drop cable
grounding
point
ODU to
grounding
system
ODU to top
LPU drop
cable
ODU
ODU mounted
on pole with
bracket
Top LPU
mounted on
pole with U-bolt
from LPU kit
Drop cable
grounding
point
ODU to top
LPU ground
cable
Mounting pole
ODU to
grounding
system
ODU to top
LPU drop
cable
Option 1: back-to-back Option 2: separate
Drop cable to
bottom LPU
Grounding
system
ODU
Grounding
points at
opposite
sides of
ODU
Grounding
points at
opposite
sides of
ODU

Page 13
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 (3.7 lb ft):
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
M6 lug to ODU
Locking nut, Wa sh er
M6 lug, Wa sh er
Nut, Toothed washer
PSU
Network
equipment
PTP 670 ground cable
CAT5e cable
Site grounding system
Ground ring
RF cables to
antenna
AC supply
H V
Lightning arrestors
Equipment building or
cabinet
RF cable
Connectorized
ODU

Page 14
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 setting of 1.7 Nm (1.3 lb
ft)
using 24 mm (0.9 in) wrench/spanner.
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).
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. Ensure
that no
undue strain is placed on the
ODU or antenna connectors. E
nsure that the cables do not flap in
the wind
, as flapping cables are prone to damage and induce unwanted vibrations in the
supporting structure
.
Connectorized ODU
H V
PTP 670 ground cable
RF cable

Page 15
Installing the copper Cat5e Ethernet interface
To install the copper Cat5e Ethernet interface, use the following procedures:
•Install the ODU to top LPU drop cable on page 15
•Install the main drop cable on page 17
•Install the bottom LPU to PSU drop cable on page 19
•Test resistance in the drop cable on page 21
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 0.6 meters (2 foot) 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 0.6 meters (2 foot) 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:

Page 16
2
Fit the parts into the body
and lightly screw on the gland nut using 24 mm (0.9 in)
wrench/spanner
(do not tighten it):
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 (4.1 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 17
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 (197 ft) of cable.
Cut to length and fit hoisting grips
1
Cut the main drop cable to length from the top LPU to the bottom LPU.
2
Slide one or more hoisting grips onto the top end of the drop cable.
3
Secure the hoisting grip to the cable using a special tool, as recommended by the
manufacturer.

Page 18
Terminate with RJ45 connectors and glands
Caution
Check that the crimp tool matches the RJ45 connector, otherwise the cable or
connector may be damaged.
1
Thread the cable
gland (with black cap) onto the main drop cable.
2
Strip the cable
outer sheath and fit the RJ45 connector load bar.
3
Fit
the RJ45 connector housing as shown. To ensure there is effective strain relief, locate the
cable inner sheath under the connector
housing tang. Do not tighten the gland nut:
Hoist and fix the main drop cable
Warning
Failure to obey the following precautions may result in injury or death:
•Use the hoisting grip to hoist one cable only. Attempting to hoist more than one
cable may cause the hoisting grip to break or the cables to fall.
•Do not use the hoisting grip for lowering cable unless the clamp is securely in place.
•Maintain tension on the hoisting grip during hoisting. Loss of tension can cause
dangerous movement of the cable and result in injury or death to personnel.
•Do not release tension on the grip until after the grip handle has been fastened to the
supporting structure.
•Do not apply any strain to the RJ45 connectors.
Caution
Do not lay the drop cable alongside a lightning air terminal.
1
Hoist the top end of the main drop cable up to the top LPU, following the hoist manufacturer’s
instructions. When the cable is in position, fasten the grip handle to
the supporting structure
and remove the hoist line.

Page 19
2
Connect th
e main drop cable to the top LPU by following the procedure Connect the drop
cable to the ODU (PSU port) and LPU
on page 16.
3
R
un the main drop cable to the site of the bottom LPU.
4
Attach the main drop cable to the supporting structure
using site approved methods.
Ground the main drop cable
At all required grounding points, connect the screen of the main drop cable to the metal of the supporting
structure using the cable grounding kit (Cambium part number 01010419001).
Install the bottom LPU to PSU drop cable
Install the bottom LPU
Install the bottom LPU, ground it, and connect it to the main drop cable.
1
Select a mounting point for the bottom LPU within 0.6 meters (2 foot) of the building entry point.
Mount the LPU vertically with cable glands facing downwards.
2
Connect the main drop cable to the bottom LPU by following the procedure Connect the drop
cable to the ODU (PSU port) and LPU on page 16.
3
Fasten one ground cable to the bottom LPU using the M6 (small) lug. Tighten both nuts to a
torque of 5 Nm (3.7 lb ft):
4
Select a building grounding point near the LPU bracket. Remove paint from the surface and
apply anti-oxidant compound. Fasten the LPU ground cable using the M10 (large) lug.
Maximum 600 mm
(24 inches)
Bottom LPU
Grounding system
Building
entry
point
LPU to grounding system
PSU drop
cable
PSU
AC supply
Network
terminating
equipment
PTP 670 ground cables
Power over Ethernet CAT5e cable
(gel-filled, shielded with copper-
plated steel)
Network CAT5e ca ble
Site grounding system
M6 lug to ODU
Locking nut, Wa sh er
M6 lug, Wa sh er
Nut, Toothed washer

Page 20
Install the LPU to PSU drop cable
Use this procedure to terminate the bottom LPU to PSU drop cable with RJ45 connectors at both ends, and
with a cable gland at the LPU end.
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,
not a bladed knife.
Caution
Check that the crimp tool matches the RJ45 connector, otherwise the cable or
connector may be damaged.
1
Cut the drop cable to the length required from bottom LPU to PSU.
2
At the LPU end only
:
•
Fit one cable gland and one RJ45 connector by following the procedure Terminate with
RJ45 connectors and glands on page 18.
•
Connect this cable and gland to the bottom LPU by following the procedure Connect the
drop cable to the ODU (PSU port) and LPU on page 16.
4
At the PSU end only
: Do not fit a cable gland. Strip the cable outer sheath and fit the RJ45
connector load bar. Fit the RJ45 connector housing. To ensure there is effective strain relief,
locate the cable inner sheath under the connector housing tang: