3com 2000 TR Manual Do Utilizador
C
TR-
IN
-FE M
ODULE
T
ECHNICAL
S
PECIFICATIONS
Environmental Specifications
TR-in-FE Cable Specification
The TR-in-FE cable you connect to the TR-in-FE
Module must conform to the Multi-Mode Fiber
(MMF-PMD) standard defined by ANSI x.3-166-1992.
Module must conform to the Multi-Mode Fiber
(MMF-PMD) standard defined by ANSI x.3-166-1992.
3Com supports multi-mode fiber (MMF-PMD)
62.5/125 mm for full duplex mode. The maximum
inter-station distance (including device-to-network
connectors) should not exceed 2 kilometers (1.25
miles).
62.5/125 mm for full duplex mode. The maximum
inter-station distance (including device-to-network
connectors) should not exceed 2 kilometers (1.25
miles).
For half duplex mode, the cable length should not
exceed 300 meters.
exceed 300 meters.
See the following table for cable specifications:
Environmental Requirements
Operating Temperature
0 to 50˚ C (32 to 122˚F)
Operating Humidity
10 to 95% relative humidity, non-con-
densing
densing
Standards
EN60068 (IEC68)
Safety
Agency Certifications
UL 1950,
EN60950,
CSA 22.2 No. 950,
ECMA 97
EN60950,
CSA 22.2 No. 950,
ECMA 97
Electromagnetic Emissions
(Agency Certification)
(Agency Certification)
EN55022 Class B,
FCC Part 15 Class A,
C108.8-M1983 Class A,
EN 50082-1 (IEC801 Parts 2-5),
EN60555 Part 2
FCC Part 15 Class A,
C108.8-M1983 Class A,
EN 50082-1 (IEC801 Parts 2-5),
EN60555 Part 2
Specification
Description
Core
62.5
mm diameter
Cladding
125
mm diameter nominal
122
mm minimum
128
mm maximum
Numerical aperture
0.275
Maximum attenuation
11 dB (including 1 db allowed for
reflection and dispersion penalties)
reflection and dispersion penalties)
Modal bandwidth
500 MHz.km
Maximum distance between
nodes
nodes
2 km (1.25 miles)