Inter-Relay Communications - GE M60 Instruction Manual

2 PRODUCT DESCRIPTION
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
NOTE
provided by the user.
LINK POWER BUDGET AND MAXIMUM OPTICAL INPUT POWER
The following specifications apply to C37.94 modules implemented since January 2012.
EMITTER, FIBER TRANSMIT
TYPE POWER
820 nm, Multimode -16 dBm
-20 dBm
1300 nm, -16 dBm
Multimode
-20 dBm
1300 nm, Single -15 dBm
mode
1300 nm Laser, 0 dBm
Single mode
1550 nm Laser, 5 dBm
Single mode
The following specifications apply to C37.94 modules implemented before January 2012.
EMITTER, FIBER TRANSMIT
TYPE POWER
820 nm LED, –20 dBm
Multimode
1300 nm LED, –21 dBm
Multimode
1300 nm ELED, –23 dBm
Single mode
1300 nm Laser, –1 dBm
Single mode
1550 nm Laser, +5 dBm
Single mode
These power budgets are calculated from the manu-
facturer's worst-case transmitter power and worst
NOTE
case receiver sensitivity.
GE Multilin
RECEIVED POWER
SENSITIVITY BUDGET
-32 dBm 16 dBm
12 dBm
-32 dBm 16 dBm
12 dBm
-32 dBm 17 dBm
-34 dBm 34 dBm
-34 dBm 39 dBm
RECEIVED POWER
SENSITIVITY BUDGET
–30 dBm 10 dB
–30 dBm 9 dB
–32 dBm 9 dB
–30 dBm 29 dB
–30 dBm 35 dB
NOTE
M60 Motor Protection System

2.2.9 INTER-RELAY COMMUNICATIONS

MAXIMUM NOTE
OPTICAL
INPUT
POWER
-8 dBm Coupled into 62.5/125 μm multi-mode fiber
Coupled into 50/125 μm multi-mode fiber
-8 dBm Coupled into 62.5/125 μm multi-mode fiber
Coupled into 50/125 μm multi-mode fiber
-8 dBm Coupled into 9/125 μm single-mode fiber
-8 dBm Coupled into 9/125 μm single-mode fiber
-10 dBm Coupled into 9/125 μm single-mode fiber
MAX. OPTICAL
INPUT POWER
–7.6 dBm
–11 dBm
–14 dBm
–14 dBm
–14 dBm
The power budgets for the 1300 nm ELED are calcu-
lated 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 1dB / 5°C.
2.2 SPECIFICATIONS
2
2-19