GUID-E246395C-EA13-4A85-9568-E78FFF92FCCA v3
Table 20: Optical budgets with C37.94 protocol
Type of LDCM
Short range (SR)
Short range (SR)
Medium range (MR) Long range (LR)
Type of fibre
Multi-mode fiber
glass 50/125 μm
Multi-mode fiber
glass 62.5/125 μm
Single-mode fiber
glass 9/125 μm
Single-mode fiber
glass 9/125 μm
Modem type
1MRK0002122-AB
1MRK0002122-AB
1MRK002311-AA
1MRK002311-BA
Contact type
ST
ST
FC/PC
FC/PC
Minimum output
power
1)
–21 dBm
–13.7 dBm
–3.2 dBm
–1.3 dBm
Minimum receiver
sensitivity
–32.5 dBm
–32.5 dBm
–30 dBm
–30 dBm
Optical link
budget
2)
11.5 dB
18.8 dB
26.8 dB
28.7 dB
1) Minimum output power is measured with 1 m of the selected fiber and the high power mode.
2) The optical budget includes a satisfactory margin for aging in transmitter and receiver during 20–30 years.
Table 21: Optical budgets with C37.94 protocol
Type of LDCM
Short range (SR)
Short range (SR)
Medium range (MR) Long range (LR)
Type of fibre
Multi-mode fiber
glass 50/125 μm
Multi-mode fiber
glass 62.5/125 μm
Single-mode fiber
glass 9/125 μm
Single-mode fiber
glass 9/125 μm
Modem type
1MRK0002122-AB
1MRK0002122-AB
1MRK002311-AA
1MRK002311-BA
Contact type
ST
ST
FC/PC
FC/PC
Minimum output
power
1)
–21 dBm
–13.7 dBm
–3.2 dBm
–1.3 dBm
Minimum receiver
sensitivity
–32.5 dBm
–32.5 dBm
–30 dBm
–30 dBm
Optical link
budget
2)
11.5 dB
18.8 dB
26.8 dB
28.7 dB
1) Minimum output power is measured with 1 m of the selected fiber and the high power mode.
2) The optical budget includes a satisfactory margin for aging in transmitter and receiver during 20–30 years.
GUID-B028E97A-88BE-4AFB-B06E-D05FACA14A8C v3
Table 22: Example of input data for calculating the optical budget (maximum distance)
Type of LDCM
Short range (SR)
Short range (SR)
Medium range (MR) Long range (LR)
Type of fibre
Multi-mode fiber
glass 50/125 μm
Multi-mode fiber
glass 62.5/125 μm
Single-mode fiber
glass 9/125 μm
Single-mode fiber
glass 9/125 μm
Modem type
1MRK0002122-AB
1MRK0002122-AB
1MRK002311-AA
1MRK002311-BA
Typical attenuation
in fibre-optic
cables
3 dB/km
3 dB/km
0.32 dB/km
0.21 dB/km
Attenuation/
Contact
1.5 dB/ST
1.5 dB/ST
0.3 dB/FC/PC
0.3 dB/FC/PC
Factory splice
attenuation
0.5 dB/splice
0.3 splices/km
0.5 dB/splice
0.1 splices/km
0.08 dB/splice
0.1 splices/km
0.08 dB/splice
0.1 splices/km
Repair splices
0.25 dB/splice
0.1 splices/km
0.25 dB/splice
0.1 splices/km
0.1 dB/splice
0.05 splices/km
0.1 dB/splice
0.05 splices/km
Fiber margin for
aging
0.1 dB/km
0.1 dB/km
0.01 dB/km
0.01 dB/km
1MRK 505 382-UEN E
Section 5
Communication set-up
Communication set-up, 670/650 series
65
Application Guide
© Copyright 2017 ABB. All rights reserved
Summary of Contents for Relion 670 series
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