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OA Type(dBm) Channel Spacing (GHz) Actual Wavelengths OA Single-Wavelength
Nominal Output Power(dBm)
Total Optical Power (dBm) Operation
Power cable diameter (mm2)
calculate length by diameter.
Max. power consumption(W)
Volgate(V)

Max PowerCable length(m):

: L = S x γ x ΔU/I
  • γ indicates the conductivity. If copper conductors are used, the value is 57 m/Ω.mm2;
    If 15% copper-clad aluminum conductors are used, the value is 36.557 m/Ω.mm2.
  • ΔU indicates the calculated voltage drop of a loop. If the voltage is –38.4 V, ΔU is 2.6 V. If the voltage is –40 V, ΔU is 1 V.
  • I indicates the current in the conductor. I = Power/Voltage (40 V)

: Common power cable diameters are 16 mm2, 25 mm2, and 35 mm2.

In case of 63 A power supply:

  • If the required power cable length is shorter than 20 m, use a power cable with a diameter of 16 mm2.
  • If the required power cable length is between 20 m and 35 m, use a power cable with a diameter of 25 mm2.
  • If the required power cable length is between 35 m and 50 m, use a power cable with a diameter of 35 mm2.
In case of 125 A power supply, the power cable diameter can only be 35 mm2 and the power cable length cannot exceed 25 m.
Fiber type
Fiber length (km)
Total fiber loss:0.00dB

: Total fiber loss = Reference fiber loss x Fiber length

Reference fiber loss: G652/G653/G655-LEAF/G655-TWRS/G655-TWC/G655-LS/G655-TW+ : 0.275dB/km; G655-MetroCor : 0.25 dB/km

Optical power conversion:
Thermal power conversion:
dBm
=0.0000mV

: For transport equipment, the heat consumption and power consumption are similar and therefore can be considered the same. Heat consumption is expressed in BTU/h and power consumption is expressed in W. The equation for unit conversion is as follows: 1 BTU/h = 0.2931 W

Subrack
Board
Value