FTTP 17 Flashcards
EPON
Ethernet Passive Optical Network
FTTP
Fiber to the Premises
GFI
Ground Fault Interrupt
NAP
Network Access Point
Soft material fitted over the end of the fiber drop to facilitate pulling
Pull Sock
RFOG
RF over glass
WDM
Wave division Multiplexing
PON
Passive Optical Network
LASER
Light Amplification Stimulated by Emissions of Radiation
What Class LASER is used in FTTP
Class 1
Coiling fiber in this pattern prevents winding up as this pattern reverses direction every 180 degrees
Figure 8
The loss of optical or electrical energy due to an electrical or mechanical obstruction.
Attenuation
RFoG Downstream
1550nm
RFoG Upstream
1610nm
EPON Downstream
1490nm
EPON Upstream
1310nm
required bond conductor gauge wire
12 gauge
AWG
American Wire gauge
The maximum total coax distance between the R-ONU and Power Supply
50ft
Always keep your eyes at a ___ degree angle or perpendicular to any optical connection
90
How many wavelengths of Light to operate concurrently on the same fiber
4 - RFoG Downstream 1550 nm, RFoG Upstream 1610 nm, EPON Downstream 1490 nm, EPON Upstream 1310 nm
What is the largest impact on fiber optic performance
Optical cleaning and assembly technique
ONU
Optical Network Unit
What powers the Fiber to the Premise (FTTP) Optical Network Unit (ONU)?
12 VDC transformer
Residential Optical Network Unit (ONU) that converts optical signal to RF and connects to existing coax.
RFoG (RF over Glass)
Each optical tap port on a Network Access Point (NAP) represents a unique fiber strand and is assigned to ___.
A specific home.
This will show a fiber assignment from the splitter cabinet to each home or address it serves.
Design Print or Cut Sheet
What is the difference between a RFoG ONU and an EPON ONU?
RFoG converts optical signal to Broadband RF. EPON converts optical signal to Ethernet.
The nominal Optical Power Input for a Fiber to the Premise (FTTP) RFoG Optical Network Unit (ONU).
0 to -6dBm
What is the power output of the Flexpoint Power Supply that feeds power to the ONU?
12 VDC
Because fiber drops come in pre-made lengths, you may have to store excess fiber in the ___.
The Pedestal or vault.
During a FTTP installation, what are the two bonding options inside of the ONU enclosure?
- Install a ground block in the coax connected to the RF side of the ONU.2. Eliminate the ground block and connect the ground wire to the ground lug on the ONU.
This service type provides a node at every residence
FTTP
If the Status LED on the Aurora RFoG ONU is green, this means.
Optical Power Input is above -10 dBm
The FTTP ONU’s two piece design has a lower door provided for access to ___.
The Ground Block
The output of the Optical Network Unit (ONU) at a residence in a Fiber to the Premise (FTTP) plant can be one of these two.
Broadband RF or Ethernet
The RF power level Output on the FTTP RFoG ONU at 1002Mhz.
19dBmV
What must be done with the fiber drop before you pull it through the conduit?
Unspool it
This must be done each and every time an optical drop connection is made, even if it’s a brand new install with brand new equipment.
Must be cleaned
What is typical loss for fiber optic cable?
1 dB per 3000 feet
What is the angle on an APC connector?
8 degrees
What is the benefit of using APC connectors?
Reduced back reflection and improved power transfer
What should the upstream transmit level be at the ONU?
3 dBm plus or minus 1 dBm at 1610 nm
What color is a UPC housing?
Blue
What color is an APC housing?
Green
The engineering standard for FTTP requires that this be installed at the output of the ONU.
A 4 way splitter at minimum
What is the preferred method of powering the ONU and why?
Dedicated. That way there is no power loss when testing levels
What is the max length between ONU and power supply?
50 feet
RFOG power supplies shall not be installed in
Attics or crawl spaces.
What is unit of measurement for optical power?
dBm
What are the four components of a fiber drop?
Toning conductor, protective jacket, strength member, fiber optic strand.
