Inter-Relay Communications; Environmental - GE UR Series 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
NOTE
source provided by the user.
LINK POWER BUDGET
EMITTER, FIBER TRANSMIT
TYPE POWER
820 nm LED, –20 dBm
Multimode
1300 nm LED, –21 dBm
Multimode
1300 nm ELED, –21 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.
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
Operating Temperatures:
Cold: IEC 60028-2-1, 16 h at –40°C
Dry Heat: IEC 60028-2-2, 16 h at 85°C
GE Power Management
RECEIVED POWER
SENSITIVITY BUDGET
–30 dBm 10 dB
–30 dBm 9 dB
–30 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
L90 Line Differential Relay
2.6 TECHNICAL SPECIFICATIONS

2.6.9 INTER-RELAY COMMUNICATIONS

TYPICAL LINK DISTANCE
EMITTER TYPE FIBER TYPE CONNECTOR
820 nm LED Multimode
1300 nm LED Multimode
1300 nm ELED Singlemode
1300 nm Laser Singlemode
1550 nm Laser Singlemode
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,
SYSTEM MARGIN:
3 dB additional loss added to calcula-
Humidity (noncondensing): IEC 60068-2-30, 95%, Variant 1, 6
days
Altitude: Up to 2000 m
Installation Category: II
TYPICAL
TYPE DISTANCE
ST 1.65 km
ST 3.8 km
ST 11.4 km
ST 64 km
ST 105 km
at 0.05 dB loss per splice.
tions to compensate for all
other losses.

2.6.10 ENVIRONMENTAL

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