View unanswered posts | View active topics


Reply to topic  [ 10 posts ] 
Author Message
  
 Post subject: Network Tester - False Reading???
PostPosted: Sun Aug 05, 2018 10:36 pm 
Registered User

Joined: Aug 2018
Posts: 6

Offline
Hello all,

I mentioned in the welcome section that I recently purchased an Amcrest security system for my mother's house. I just opened up the NVR, one of the cameras, the crimping kit and about 3' of the Cat6 spool I got. The kit come with an interesting crimper that I can only assume works as designed, a bag of zip ties, 100 connectors and a very cheap looking network cable tester. I decide to try my hand at crimping on the connectors to the the cable after carefully stripping the outer layer and using scissors to peel back the inner layer exposing the 4 twisted pairs. Straightened them out by hand, trimmed them back to about 3/4" and shoved them into the connector, making sure they seat all the way in and did the same to the other end, also making sure the cables match color wise. The tester gave me the green lights. I felt accomplished. And then immediate mistrust as I plugged the camera into the NVR that I installed the hard drive into. The IR lights come on when I cover the camera, however, I got nothing on the screen. No IP when searching for device, nothing on the app they have. I made a second cable, exactly the same way, same tools and parts. And this time, it functions.

For those who don't like reading my stories, my question is this: What would cause the camera to receive power but not transmit data? I do notice that this direct burial Cat6 is a lot more rigid than what I'm used to. Would that create problems in transmission if the connectors I'm using can't pierce the wires properly? Is that a thing? Anything helps.

Thanks,
YeeWin


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Mon Aug 06, 2018 10:44 am 
Installer

Joined: Apr 2005
Posts: 1661
Location: ST Joe , MI

Offline
you could have the power wires terminated properely and the other paris mismatched. Your cable tester should show all 4 pairs connected directly to each other brown to brown etc. if not reterminate and try again.


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Tue Aug 07, 2018 10:50 am 
Registered User

Joined: Aug 2018
Posts: 6

Offline
I've been re-terminating persistently with little to no luck. Could I be crimping to hard? Not hard enough? Do i need to buy better connectors? The network testers just has 9 lights on it (1 thru 8 and G which I'm assuming means ground?) and when I plug both ends into the tester, I gets light moving down 1 thru 8. simultaneously.


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Tue Aug 07, 2018 11:59 am 
User avatar
Integrator

Joined: Feb 2009
Posts: 2373
Location: Barcelona, Spain

Offline
In what order did you put the color cables?

Image


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Tue Aug 07, 2018 12:10 pm 
Registered User

Joined: Aug 2018
Posts: 6

Offline
Neither. I went BR,BR/W,G,G/W,B,B/W,O,O/W on both ends. I was under the impression that all the cables were the same, regardless of color. So I just kept the color pairs together and made the other end match. Am I incorrect for thinking this?


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Tue Aug 07, 2018 2:29 pm 
User avatar
Integrator

Joined: Feb 2009
Posts: 2373
Location: Barcelona, Spain

Offline
You are incorrect, that's why it does not work. The pairs have to be 1-2 3-6 4-5 7-8, and you are pairing 3-4 and 5-6.

Stick to the standards, and use always the same color coding (I always do T568B).


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Tue Aug 07, 2018 4:00 pm 
Installer

Joined: Jan 2012
Posts: 972
Location: Australia

Offline
I made the same mistake on my first ethernet cable as well. Being an old analogue man I mistakenly thought that as long as each end of each cable was terminated in the same position then all would be well. Point to point - how simple can it be. WRONG . That is ok for DC which is why your IR was working but its not ok for the signal wires. Its a complex topic which I dont fully understand. To do with slew rates & velocity factors and other black magic stuff.

_________________
Licenced Security Installer & Trainer
ECC , BEE


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Tue Aug 07, 2018 4:42 pm 
Registered User

Joined: Aug 2018
Posts: 6

Offline
Wow. Good to know. I saw those standards online but ignored them because the Amcrest tech I spoke to said it did matter. I will give this a go once I get back from my work trips. Thanks for info.


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Thu Aug 09, 2018 6:01 am 
Installer

Joined: Apr 2005
Posts: 1661
Location: ST Joe , MI

Offline
b pattern is the most common. If you keep having problems with plugs try using a jack on your cable and connect your camera with a patch cord.


Top
 Profile  
Reply with quote  

  
 Post subject: Re: Network Tester - False Reading???
PostPosted: Thu Aug 09, 2018 8:18 am 
Registered User

Joined: Aug 2018
Posts: 6

Offline
My apologies, but due to my inexperience, I'm not sure what you mean by jack/patch cord. Could you elaborate?


Top
 Profile  
Reply with quote  

Display posts from previous:  Sort by  
Reply to topic  [ 10 posts ] 


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

It is currently Sun Aug 19, 2018 2:18 am

The contents of this webpage are copyright © 2003-2016 CCTVForum.com. All Rights Reserved.