Upload
tarmon
View
46
Download
3
Embed Size (px)
DESCRIPTION
FSO Installation. Free Space Optics The Practical Aspect. The Path to a successful IR link. 2. 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. Preparation. - PowerPoint PPT Presentation
Citation preview
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