Inter-Relay Communications - GE L30 Instruction Manual

SPECIFICATIONS

2.6.9 Inter-relay communications

SHIELDED TWISTED-PAIR INTERFACE OPTIONS
Interface type
RS422
G.703
2
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
820 nm, Multimode
1300 nm, Multimode 62.5/125 μm
1300 nm, Single
mode
1300 nm Laser,
Single mode
1550 nm Laser,
Single mode
The following specifications apply to filter interface modules implemented before January 2012.
Emitter, fiber type
820 nm LED, Multimode
1300 nm LED, Multimode
1300 nm ELED, Single mode
1300 nm Laser, Single mode
1550 nm Laser, Single mode
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.
2-40
Typical distance
1200 m
100 m
Cable type Transmit power Received
62.5/125 μm -16 dBm
50/125 μm -20 dBm
-16 dBm
50/125 μm -20 dBm
9/125 μm -15 dBm
9/125 μm 0 dBm
9/125 μm 5 dBm
Transmit Received
power sensitivity
–20 dBm –30 dBm
–21 dBm –30 dBm
–23 dBm –32 dBm
–1 dBm –30 dBm
+5 dBm –30 dBm
Power budget Maximum
sensitivity
-32 dBm 16 dBm
12 dBm
-32 dBm 16 dBm
12 dBm
-32 dBm 17 dBm
-34 dBm 34 dBm
-34 dBm 39 dBm
Power budget Maximum optical
input power
10 dB –7.6 dBm
9 dB –11 dBm
9 dB –14 dBm
29 dB –14 dBm
35 dB –14 dBm
L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: PRODUCT DESCRIPTION
optical input
power
-8 dBm
-8 dBm
-8 dBm
-8 dBm
-10 dBm