
4-6 Modules
SG4000 Installation and Operation Manual
Figure 4-3 illustrates the relationship between test-point voltage (Vdc) and optical power (dBm).
Figure 4-3
Test-point voltage versus optical power
Optical power (dBm)
-6
-5
-4
-3
-2
-1
0
1
2
3
4
3.000.25 0.50 0.75 1.00 1.25 1.50
Test point DC Voltage (Vdc)
1 Volt = 1 mW optical power
10 Log x Voltage (DC) = optical power (dBm)
10
1.75 2.00 2.25 2.50 2.75
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