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TR-
C
Environmental Specifications
Environmental Requirements
Operating Temperature
Operating Humidity
Standards
Safety
Agency Certifications
Electromagnetic Emissions
(Agency Certification)
-FE M
IN
ODULE
0 to 50˚ C (32 to 122˚F)
10 to 95% relative humidity, non-con-
densing
EN60068 (IEC68)
UL 1950,
EN60950,
CSA 22.2 No. 950,
ECMA 97
EN55022 Class B,
FCC Part 15 Class A,
C108.8-M1983 Class A,
EN 50082-1 (IEC801 Parts 2-5),
EN60555 Part 2
T
ECHNICAL
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.
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).
For half duplex mode, the cable length should not
exceed 300 meters.
See the following table for cable specifications:
Specification
Core
Cladding
Numerical aperture
Maximum attenuation
Modal bandwidth
Maximum distance between
nodes
S
PECIFICATIONS
Description
62.5 mm diameter
125 mm diameter nominal
122 mm minimum
128 mm maximum
0.275
11 dB (including 1 db allowed for
reflection and dispersion penalties)
500 MHz.km
2 km (1.25 miles)
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