FSO Installation

FSO Installation FSO Installation Free Space Optics

The Practical AspectFree Space Optics

The Practical Aspect

2 The Path to a successful IR link

Site survey

Choosing the right product

Design for safe (worst case) margins

Perform a clean “by the book” installation

Test end-to-end link connectivity

PreparationPreparation

4 Performing the Site Survey

1. Choose a mounting location

2. Confirm line of sight (Site A to Site B)

3. Note where fiber and power should terminate

4. Determine link range using GPS or other methods

5. Photograph the site

6. Go to Site B and repeat steps 1-5

7. Complete the site survey check list (Site Survey Form)

5 Choose A Mounting Location

12

7

6

5

4

3

SupportColumn

Dark gray indicatesledge/outside wall

Line of sightLine of sight

PREFERRED MOUNTING LOCATIONS

TOP VIEW OF ROOF STRUCTURES(Numbers indicate mounting locations in order of preference, 1 = best)

6 Line of sight

Clear line-of-SightAtmospheric disturbances

• dust clouds

• smoke

• large vehicle traffic (fumes)

Physical obstacles• Moving objects (cranes etc.)

• Trees

• Birds Nesting

7 Line of sight With chimneys

8 Line of sight With chimneys

active ChumminessLink Location

9 Site Survey

Scintillation Sources• Air conditioning units• Long, hot, rooftops• Smokey chimneys• Heavy traffic exhaust fumes• Metal Roofing

10 Long, hot, rooftops

Long hot roof can cause scintillations

Net

Ligh

t Uni

t

11 Long, hot, rooftops

Long metal roof can cause heavy scintillations during summer time And can affect the traffic. The NetLight should be higher at list 15feet above the roof

12 Long, hot, rooftops

Better location to mount the NetLight

13 Long, hot, rooftops

Are you crossing this roof?

14 Air conditioning units

Point B (Bad location)

Point A (Good location)

15 Air conditioning units

Vibrations• Stable mount

• Wind

• Compressors

• Elevators

• Traffic

Building Sway• Wooden buildings

• Earthquake buildings

16

Site Survey Windows and East-West Links

Windows• 4% light reflection from each surface

• 15% loss from a double pane window

• Tinted windows increase attenuation

• NetLight should be placed at an angle greater than 1 and never more than 45 away from perpendicular to the window. Green, gray, brown and mirror window are not recommended because of very high attenuation

East-West links• Errors if 0.5 sun disk overlaps the NetLight

• Only for a few days a year

• Only for a few minutes each day

Note: When transmitting trough window it important to notify the customer that From time to time the link can be blocked by the window cleaner elevator

Note: When transmitting trough window it important to notify the customer that From time to time the link can be blocked by the window cleaner elevator

17 Transmit Trough Window Drawing

18 Transmit Trough Window Picture

Taking off part of the window coating

Marking for the window cleaners

19 Photograph The Site

Photograph the location

Spot alternative mounting locations (if necessary)

Photograph the line-of-sight ( From the NL final height)

Photograph the overall roof top

Photograph the under line terrain

20 Bad Line Of Sight Example

21

Installation

22 Rooftop Mounting

Four types of Mounts• Wall pedestal mounts• Floor pedestal mounts• Extended wall mounts• Pole clamps mounts

23 Wall Pedestal Mount

.

Wall Pedestal Mount.

Used when the link needs

to be elevated above the

top of the wall.

M054C - 10 inches from base plate

M053C - 22 inches from base plate

M022C – 34 inches from base plate

Wall Pedestal Mount.

Used when the link needs

to be elevated above the

top of the wall.

M054C - 10 inches from base plate

M053C - 22 inches from base plate

M022C – 34 inches from base plate

24 Floor Pedestal Mount

Reinforced Floor Pedestal Mount.

Similar to the Standard Floor Pedestal.

M015C - 47 inches (concrete)

M059C - 47 inches (Indoor)

M058C - 34 inches (Indoor)

M050C – 34 inches (concrete)

M055C - 22 inches (concrete)

M057C - 22 inches (Indoor)

Reinforced Floor Pedestal Mount.

Similar to the Standard Floor Pedestal.

M015C - 47 inches (concrete)

M059C - 47 inches (Indoor)

M058C - 34 inches (Indoor)

M050C – 34 inches (concrete)

M055C - 22 inches (concrete)

M057C - 22 inches (Indoor)

25 Extended Wall Mount

Extended Wall Mount.

Used when a standard wall

pedestal mount is insufficient to

clear obstacles or for applications

requiring an extension from the wall for better access to the transceiver.

M064C - 12 inches (metal for PCL)

M051C - 22 inches (concrete)

M056C - 34 inches (concrete)

M062C - 22 inches (metal)

M063C - 34 inches (metal)

Extended Wall Mount.

Used when a standard wall

pedestal mount is insufficient to

clear obstacles or for applications

requiring an extension from the wall for better access to the transceiver.

M064C - 12 inches (metal for PCL)

M051C - 22 inches (concrete)

M056C - 34 inches (concrete)

M062C - 22 inches (metal)

M063C - 34 inches (metal)

26 Pole Clamp Example

27 Pole Clamp Example

28

Side Walk Concrete slabs place on the roof

29

Side Walk Concrete slabs place on the roof

30

Side Walk Concrete slabs place on the roof

31

Pre Made Concrete slabs on the roof

32

NetLight Installed on a self Support Tower

Local Made Mount Bracket

33

Examples

34 Bad Finished Installation

35 Bad Finished Installation

36 Bad Finished Installation

37 NetLight 155-5400

38 Finished Installation

Junction Box

4 Links On One Roof Top

39 Finished Installation

Back To Back HOP installation

Junction Box

40 Finished Installation

Thank youThank you