Equation for calculating the FO budget (A
Budget
):
= |(
)|
P
Receiver
= sensitivity of FO receiving interface
P
Sender
= output power of FO transmitting interface
Equation for calculating the fiber optic cable length (l
Max
):
=
(2
)
A
Connector
= connector loss
A
Fiberoptic
= cable attenuation
Calculation for the example ibaFOB-io-Dexp -> ibaBM-PN in the best case:
= |
30
(
9
)
| = 21
=
21 (2 0.5)
3.5
= 5.71km
Calculation for the example ibaFOB-io-Dexp -> ibaBM-PN in the worst case:
=
|
30
(
16
)|
= 14
=
14 (2 0.5)
3.5
= 3.71km
Note
When connecting several devices as daisy chain (e.g. ibaPADU
-8x with 3Mbit) or as
-S-CM with 32Mbit Flex), the maximum distance applies to the sec-
tion between two devices.
The FO signals are re-amplified in each device.
g fiber optics of the 50/125 µm type, a distance reduction of approx. 30-40%
.
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