请问C300下如何看ONU光路衰耗

设呢意思？拿光功率计测啊！

远程看

show pon power olt-rx epon onu ..

AY-LZ-XinJu-olt-10#show pon power onu-rx gpon-onu_1/2/8:1
Rx power: -15.952(dbm)
AY-LZ-XinJu-olt-10#show pon power onu-tx gpon-onu_1/2/8:1
Tx power: 2.555(dbm)