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C2607M (2/07)
OPTICAL POWER BUDGET AND MAXIMUM TRANSMISSION DISTANCE
FX82052, -2 Models
Model Number
Number
 of Fibers
Wavelength 
(Transmit/Receive)*
Optical 
Power 
Budget
Maximum
Transmission
Distance
Fiber Port A
Fiber Port B
Multimode (62.5/125 μm)
FX82052MSTR-2
2 (1 per port)
1310/850 nm
850/1310 nm
26 dB
2 km (1.2 mi)
FX82052MSCR-2
2 (1 per port)
1310/850 nm
850/1310 nm
26 dB
2 km (1.2 mi)
Single-Mode (9/125 μm)
FX82052SSTR-2
2 (1 per port)
1310/1550 nm
1550/1310 nm
28 dB
46 km (28.6 mi)
§
FX82052SSCR-2
2 (1 per port)
1310/1550 nm
1550/1310 nm
28 dB
46 km (28.6 mi)
§
* The FX82052 module is classified by the FDA as a Class 1 laser product. For 850 nm, the Class 1 laser 
limit is <0.78 mW. For 1310 nm, the Class 1 laser limit is <15.6 mW. For 1550 nm, the Class 1 laser 
limit is <10.0 mW.
When using 50/125 μm multimode fiber, subtract 3 dB from the optical power budget.
Maximum transmission distance is limited by fiber bandwidth.
§
Maximum transmission distance is based on attenuation of 0.5 dB/km plus a 5 dB buffer for 
connector and splice losses.
NOTES:
• Single-mode FC connectors are available upon request. Contact the factory for additional 
information.
• For conformal coated models, replace the first letter in the model number with the letter C
The conformal coated version of FX82052MSTR-2, for example, is CX82052MSTR-2.
• For models with higher optical power budgets, contact the factory.