Reference
R - 13
Form 361015-0001A
FiberPoint Structured Wiring Enclosure Installation Guide
U
SING
THE
C
ALCULATOR
Select Your Specific PON Configuration
•
The calculator assumes a system implemented
with symmetrical splitters (not asymmetrical taps)
•
Input the correct number of splitters, splices,
connections and maximum range.
•
If an RF video system is being implemented, add
an OLT combiner at the HeadEnd.
•
Verify that the system meets the PON Design
Guidelines as defined above (PON Design
Guidelines).
1118
IMPORTANT
IMPORTANT: The green shaded boxes below indi-
cate that the configuration you are
proposing is within acceptable opti-
cal link budgets and can continue to
be built out per those parameters.
Values appearing in Red suggest
that you have dropped below the
acceptable link budget level and
adjustments must be made prior to
proceeding.
Figure R-4: GPON Link Budget Calculator
3004
GPON DOWNSTREAM LOSS - 1490nm
GPON UPSTREAM LOSS - 1310nm
OSI Specification GPON Loss
Qty U/M
Unit Loss
(typ.)
Total Loss
σ
2
3
σ
Unit Loss
Total Loss
σ
2
3
σ
Splitter(1X2) - connectorized
0
ea
3.70
0.00
0.0000
0.33
3.70
0.00
0.0000
0.33
Splitter(1X3) - connectorized
0
ea
5.10
0.00
0.0000
0.40
5.10
0.00
0.0000
0.40
Splitter(1X4) - connectorized
0
ea
7.25
0.00
0.0000
0.45
7.25
0.00
0.0000
0.45
Splitter(1X8) - connectorized
0
ea
10.38
0.00
0.0000
0.63
10.38
0.00
0.0000
0.63
Splitter(1X16) - connectorized
1
ea
14.10
14.10
0.0900
0.90
14.10
14.10
0.0900
0.90
Splitter(1X32) - connectorized
0
ea
17.45
0.00
0.0000
1.25
17.45
0.00
0.0000
1.25
Fiber Length (mi)
10
mi
0.42
4.18
0.0072
0.08
0.64
6.44
0.0072
0.08
FiberPoint Connector
1
ea
0.40
0.40
0.0044
0.20
0.40
0.40
0.0044
0.20
OSP Connectors (APC)
2
ea
0.25
0.50
0.0089
0.20
0.25
0.50
0.0089
0.20
Splices
5
ea
0.05
0.25
0.0002
0.02
0.05
0.25
0.0002
0.02
OLT Combiner (Only with VPON)
1
0.80
0.80
0.0000
0.00
0.80
0.80
0.0000
0.00
Power Penalties (MPN only, dB)
0.0
0.38
Required Design Margin (dB)
1
1.0
1.0
ODN Loss
Downstream
Upstream
Mean
3
σ
Mean+3
σ
Mean-3
σ
Mean
3
σ
Mean+3
σ
Mean-3
σ
21.2
1.00
22.2
20.2
23.9
1.00
24.9
22.9
Laser Power Calculation
Laser Launch Power Minimum
1.0
dBm
-1.0
dBm
Link Budget Calculation
Minimum
Nominal
Maximum
Laser Output
1.0
1.0
1.0
dBm
-1.0
-1.0
-1.0
dBm
PON Loss
20.2
21.2
22.2
dB
22.9
23.9
24.9
dB
Received Power Limits [ Max | Mean | Min ]
-19.2
-20.2
-21.2 dBm
-23.9
-24.9
-25.9 dBm
Receiver Sensitivity (BER = 1E-10)
-25.0
-25.0
-25.0 dBm
-27.0
-27.0
-27.0 dBm
Optical Link Margin
Downstream Margin (dB) vs. loss
Upstream Margin (dB) vs. loss
Mean-3
σ
Mean
Mean+3
σ
Mean-3
σ
Mean
Mean+3
σ
5.8
4.8
3.8
3.1
2.1
1.1
Dynamic Range Limit
Maximum Loss on the PON
24.9
Minimum Allowed Loss on the PON
17.9 Every ONT must have at least this much optical loss.
FP500 GPON & VPON CALCULATOR