Cisco GS7000 - Power out Measurement

Optical Amplifier Power In and Power Out Test Point Use and Operation
OL-29936-01 71
Power Out Measurement
1 Place the positive (+) lead of a DC voltmeter on the Power Out test point.
2 Place the negative (-) lead of the DC voltmeter on ground.
Note: When installed, the metal case of the EDFA module is at ground.
3 Record the voltage measurement and apply this formula:
Pout (dBm) = 6.67 * (Vout (volts) - 0.7)
For example, if Vout measures 3.7 V, the output power from the EDFA is
approximately 6.67 * (3.7 - 0.7) = 6.67 * 3 = 20 dBm.
Note: Results are accurate to ± 0.5 dB at room temperature.