Whether E2OBU03 can substitute for E2OBU01

Query the performance counters of boards:
E2OBU01: C-band optical power amplifier with 20 dB gain
E2OBU03: C-band optical power amplifier with 23 dB gain
According to the product documentation, the following conclusions are drawn:
1. E2OBU03 can substitute for E2OBU01. E2OBU03 actually has slightly larger noise than E2OBU01, but the small difference does not affect the system and therefore can be ignored. That is why E3 series amplifiers retain only 0BU03 and OBU05 rather than OBU01.
2. For E2OBU01, the gain is 20 dB and the single-wavelength nominal input optical power in a 40-wavelength system is �?6 dBm. For E2OBU03, the gain is 23 dB and the single-wavelength nominal input optical power in a 40-wavelength system is �?9 dBm. When E2OBU03 substitutes for E2OBU01, ensure that the single-wavelength nominal input optical power of E2OBU03 is 3 dB lower than that of E2OBU01. After board substitution, the input optical power values of the OBU boards must be adjusted to appropriate values.

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