GE UR Series C70, Instruction Manual

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2-18 C70 Capacitor Bank Protection and Control System GE Multilin
2.2 SPECIFICATIONS 2 PRODUCT DESCRIPTION
2
2.2.9 INTER-RELAY COMMUNICATIONS
SHIELDED TWISTED-PAIR INTERFACE OPTIONS
RS422 distance is based on transmitter power
and does not take into consideration the clock
source provided by the user.
LINK POWER BUDGET
These power budgets are calculated from the
manufacturer’s worst-case transmitter power
and worst case receiver sensitivity.
The power budgets for the 1300nm ELED are cal-
culated from the manufacturer's transmitter
power and receiver sensitivity at ambient temper-
ature. At extreme temperatures these values will
deviate based on component tolerance. On aver-
age, the output power will decrease as the tem-
perature is increased by a factor 1dB / 5°C.
MAXIMUM OPTICAL INPUT POWER
TYPICAL LINK DISTANCE
Compensated difference in transmitting and receiving (channel
asymmetry) channel delays using GPS satellite clock: 10 ms
2.2.10 ENVIRONMENTAL
AMBIENT TEMPERATURES
Storage temperature: –40 to 85°C
Operating temperature: –40 to 60°C; the LCD contrast may be
impaired at temperatures less than –
20°C
HUMIDITY
Humidity: operating up to 95% (non-condensing) at
55°C (as per IEC60068-2-30 variant 1,
6days).
OTHER
Altitude: 2000 m (maximum)
Pollution degree: II
Overvoltage category: II
Ingress protection: IP20 front, IP10 back
INTERFACE TYPE TYPICAL DISTANCE
RS422 1200 m
G.703 100 m
EMITTER,
FIBER TYPE TRANSMIT
POWER
RECEIVED
SENSITIVITY
POWER
BUDGET
820 nm LED,
Multimode –20 dBm –30 dBm 10 dB
1300 nm LED,
Multimode –21 dBm –30 dBm 9 dB
1300 nm ELED,
Singlemode –23 dBm –32 dBm 9 dB
1300 nm Laser,
Singlemode –1 dBm –30 dBm 29 dB
1550 nm Laser,
Singlemode +5 dBm –30 dBm 35 dB
NOTE
NOTE
NOTE
EMITTER, FIBER TYPE MAX. OPTICAL
INPUT POWER
820 nm LED, Multimode –7.6 dBm
1300 nm LED, Multimode –11 dBm
1300 nm ELED, Singlemode –14 dBm
1300 nm Laser, Singlemode –14 dBm
1550 nm Laser, Singlemode –14 dBm
EMITTER TYPE CABLE
TYPE CONNECTOR
TYPE
TYPICAL
DISTANCE
820 nm LED,
multimode 62.5/125
μ
m ST 1.65 km
1300 nm LED,
multimode 62.5/125
μ
m ST 3.8 km
Typical distances listed are based on the fol-
lowing assumptions for system loss. As
actual losses will vary from one installation to
another, the distance covered by your system
may vary.
CONNECTOR LOSSES (TOTAL OF BOTH ENDS)
ST connector 2 dB
FIBER LOSSES
820 nm multimode 3 dB/km
1300 nm multimode 1 dB/km
1300 nm singlemode 0.35 dB/km
Splice losses: One splice every 2 km,
at 0.05 dB loss per splice.
SYSTEM MARGIN
3 dB additional loss added to calculations to compensate for
all other losses.
NOTE