| 预算 | 128分光固定差损 | 剩余光预算 | 可支持光缆长度 | 64分光固定差损 | 剩余光预算 | 可支持光缆长度 |
EPON PX20+ | 29.5 | 31.6 | -2.1 | 0 | 25.5 | 4 | 11.4 |
EPON PX20++ | 33 | 31.6 | 1.4 | 4 | 25.5 | 7.5 | 21.4 |
GPON CLASS B+ | 28.5 | 31.6 | -3.1 | 0 | 25.5 | 3 | 8.6 |
GPON CLASS C+ | 32.5 | 31.6 | 0.9 | 2.6 | 25.5 | 7 | 20.0 |
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