Inter-Relay Communications - GE B30 Instruction Manual

CHAPTER 2: PRODUCT DESCRIPTION
PARALLEL REDUNDANCY PROTOCOL (PRP)
(IEC 62439-3 CLAUSE 4, 2012)
Ethernet ports used:
Networks supported:
OTHER
TFTP, SFTP, HTTP, IEC 60870-5-104, Ethernet Global Data (EGD), IEEE C37.118

2.5.9 Inter-relay communications

SHIELDED TWISTED-PAIR INTERFACE OPTIONS
Interface type Typical distance
RS422 1200 m
G.703 100 m
RS422 distance is based on transmitter power and does not take into consideration the clock source provided by
the user.
LINK POWER BUDGET AND MAXIMUM OPTICAL INPUT POWER
The following specifications apply to filter interface modules manufactured from January 2012.
Emitter, fiber type Cable type
820 nm, Multimode 62.5/125 μm
50/125 μm
1300 nm, Multimode 62.5/125 μm
50/125 μm
1300 nm, Single 9/125 μm
mode
1300 nm Laser, 9/125 μm
Single mode
1550 nm Laser, 9/125 μm
Single mode
The following specifications apply to filter interface modules implemented before January 2012.
Emitter, fiber type Transmit
power
820 nm LED, Multimode –20 dBm
1300 nm LED, Multimode –21 dBm
1300 nm ELED, Single mode –23 dBm
1300 nm Laser, Single mode –1 dBm
1550 nm Laser, Single mode +5 dBm
The power budgets are calculated from the manufacturer's worst-case transmitter power and worst case receiver
sensitivity.
The power budgets for the 1300 nm ELED are calculated from the manufacturer's transmitter power and receiver
sensitivity at ambient temperature. At extreme temperatures these values deviate based on component tolerance.
On average, the output power decreases as the temperature is increased by a factor of 1 dB / 5 °C.
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
2 and 3
10/100 Mb Ethernet
Transmit power Received
sensitivity
-16 dBm -32 dBm
-20 dBm
-16 dBm -32 dBm
-20 dBm
-15 dBm -32 dBm
0 dBm -34 dBm
5 dBm -34 dBm
Received Power budget Maximum optical
sensitivity
–30 dBm 10 dB
–30 dBm 9 dB
–32 dBm 9 dB
–30 dBm 29 dB
–30 dBm 35 dB
Power budget Maximum
optical input
power
16 dBm -8 dBm
12 dBm
16 dBm -8 dBm
12 dBm
17 dBm -8 dBm
34 dBm -8 dBm
39 dBm -10 dBm
input power
–7.6 dBm
–11 dBm
–14 dBm
–14 dBm
–14 dBm
SPECIFICATIONS
2
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