Inter-Relay Communications; Environmental - GE UR Series B30 Instruction Manual

2.2 SPECIFICATIONS
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
NOTE
source provided by the user.
LINK POWER BUDGET
EMITTER, TRANSMIT
FIBER TYPE POWER
820 nm LED, –20 dBm
Multimode
1300 nm LED, –21 dBm
Multimode
1300 nm ELED, –23 dBm
Singlemode
1300 nm Laser, –1 dBm
Singlemode
1550 nm Laser, +5 dBm
Singlemode
These power budgets are calculated from the
manufacturer's worst-case transmitter power
NOTE
and worst case receiver sensitivity.
The power budgets for the 1300nm ELED are cal-
culated from the manufacturer's transmitter
NOTE
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
EMITTER, FIBER TYPE
820 nm LED, Multimode
1300 nm LED, Multimode
1300 nm ELED, Singlemode
1300 nm Laser, Singlemode
1550 nm Laser, Singlemode
AMBIENT TEMPERATURES
Storage temperature:
Operating temperature: –40 to 60°C; the LCD contrast may be
HUMIDITY
Humidity:
2-16
TYPICAL DISTANCE
1200 m
100 m
RECEIVED POWER
SENSITIVITY BUDGET
–30 dBm 10 dB
–30 dBm 9 dB
–32 dBm 9 dB
–30 dBm 29 dB
–30 dBm 35 dB
MAX. OPTICAL
INPUT POWER
–7.6 dBm
–11 dBm
–14 dBm
–14 dBm
–14 dBm
–40 to 85°C
impaired at temperatures less than –
20°C
operating up to 95% (non-condensing) at
55°C (as per IEC60068-2-30 variant 1,
6days).
B30 Bus Differential System
2 PRODUCT DESCRIPTION

2.2.9 INTER-RELAY COMMUNICATIONS

TYPICAL LINK DISTANCE
EMITTER TYPE CABLE
TYPE
820 nm LED, 62.5/125 μm
multimode
50/125 μm
1300 nm LED, 62.5/125 μm
multimode
50/125 μm
1300 nm ELED, 9/125 μm
single mode
1300 nm Laser, 9/125 μm
single mode
1550 nm Laser, 9/125 μm
single-mode
Typical distances listed are based on the fol-
lowing assumptions for system loss. As
NOTE 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
1550 nm singlemode 0.25 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.
Compensated difference in transmitting and receiving (channel
asymmetry) channel delays using GPS satellite clock: 10 ms
OTHER
Altitude: 2000 m (maximum)
Pollution degree: II
Overvoltage category: II
Ingress protection: IP20 front, IP10 back
Noise: 0 dB
CONNECTOR TYPICAL
TYPE DISTANCE
ST 1.65 km
ST 1.65 km
ST 4 km
ST 4 km
ST 11.4 km
ST 64 km
ST 105 km

2.2.10 ENVIRONMENTAL

GE Multilin