Ormazabal ekor.rps - Ethernet Communication; Ethernet Via GOF; Ethernet Via RJ45 Cable

IG-150-EN version 04; 03/10/16
40
Hardware General instructions
ekor.rps
2.7. Ethernet communication
2.7.1. Ethernet via GOF
The optic channels characteristics are the following:
1. Baud rate: 100 Mb
2. Connector: ST
3. Optical transmitter: LED
4. Optical receiver: PIN photodiode
5. Optical output: Non-modulated
6. Wave length: Glass λ
c
=820mm
7. Plastic λ
c
=660mm
8. BER: δ10
-9
9. Glass optic ber multimode: 62.5/125μm
10. Temperature range values from –20°C to+85°C
11. Losses according to the type of ber
Maximum
losses
allowed
Losses km
Connection
losses
Glass
62.5/125μm
8db 4db 0.5db
Table 2.2. Pérdidas según el tipo de bra
12. The maximum transmission distance is calculated as
follows:
=
∆
−
−
MEPCPP
l
where: PP = Losses in the link
PC = Additional connection insertion losses
ME = Aging margin should be 3 db
Δ = Cable attenuations in db/Km
13. Maximum distance that can be reached:
In the worst
possible
conditions
In the best
possible
conditions
Cristal 62,5/125μm
1.25km 4km
Table 2.3. Maximum distance that can be reached
2.7.2. Ethernet via RJ45 cable
1. Interface per 600 ohms impedance transformer
2. Insulation 500 V
3. RJ45 connector (female)
4. Communication speed: 10/100 Mb
5. Cable type: Screened
6. Cable length: 100 m maximum