Intermittent NO-LINK on DS-2CD2032F-I

pege

n3wb
Joined
Jun 16, 2018
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Location
Korea
Hello. First of all, Please be generous my poor English since I live in S.Korea now and I'm not good at speaking English.

I used 4 IP Cameras(all of them is Hikvision). but A couple of days ago, A Lightning striked something near my house. I think The lightning might flow in my network devices through the telephone wire.

Enventually 2 IP Cameras, a PoE Injector, a switching hub, a router was dead.
but DS-2CD2032F-I survived. However, It sometimes works and sometimes don't work showing NO-LINK.

Here is the timeline of 2032F-I's recording data.


I want to know why this intermittent no-link happens.

p.s. I've tested the IP Camera using new a DC adapter and UTP cable.
(because I suspected that the adapter and UTP cable were damaged by Lightning strike)

Please give your opnions!
 
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