Hi

My house has 8 cctv, all connected to one decoder. The problem is, the wiring for these cctv keep on going kaput (not sure the power supply or the video wire), one after another. From the original 8 cctv, now only 4 cctv is working (the other 4 has 'video loss' displayed). I can confirm that the cctv still works, because if I detach the cctv and put it on another place, it's working fine.

Not sure what's the problem though. The wiring is only about a year old. All cctv are located outside my house. I remember that the 3 cctv gone 'offline' few days ago (when it was heavy rain & thunderstorm). Btw I checked the wiring at the cctv end, nothing seems wrong. Even the cctv is still ok... so if somehow the petir renders the wiring kaput, how can I check it?



Thanks

It's time to tukar installer.

Actually one of the cctv that has gone kaput much earlier was installed few years ago by another installer...

Just in case, back to the days when I use streamyx here, my modem would go kaput almost every time there's a thunder here...

Nowadays using unifi no such problem already.

What sort of wiring or CCTV cameras? Analog? Digital?

errr.. .can you explain more?

Try to install cal-lab lightning isolator if its caused by lightning

your cable use original materials or not?

try swapping the working cctv port (behind/at the decoder) with the faulty one see whether working or not.

sometime the cctv port can become kaput also

Try to check for rats..it happened to my house cctv.

8 cctv?

Where do you live?

How much money do you have?

What time no one is at home?

Please be specific. PM, thx.

usually power adapter kaput..

Cable tikus gigit already or poor quality cables.

Maybe cable not meant for ourdoor use.

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This post has been edited by Bkboy: May 3 2016, 09:49 PM

our friend trickly left a short-circuit wiring on the surface to let people whose hands are itch to touch it/intentionally to spoil it. one theft or staff touched it with ladder and fell down with the shock.

actually this is how all CCTV company earn your money

install it is very cheap, RM2k-3k can install

but maintenance is crazy, everytime the vendor come check, they charged RM250 excluding replacement part

last time office, every 3 months sure got some problem one

cabling if remember correctly, RM80 per metre

Make sure your installer use cable meant for outdoor use. And shield the cable from sun, heat, water, etc.

How to check if the cable is meant for outdoor use or not? Tq

how to know if original cable or not? the cabling is quite long.

how to check whether it's for outdoor or indoor?

thanks!

The cable should have markings. With the markings, you can look up the manufacturer's specifications.

Outdoor cables have better insulation or jacket. To keep out moisture, more durable in hot and cold weather, etc.

See - https://sewelldirect.com/learning-center/rg59-or-rg6

If you are using analog cameras (probably you are using RG59 cables). Analog cables usually have a BNC connector or RCA connector.

You have a multimeter? I would disconnect the camera and test if there is a short somewhere in the cable.

If no short, can join the two wires (short the middle pin on the RCA with the outer part of the connector), to see if there is an break in the cable.

This post has been edited by joe_mamak: May 3 2016, 06:32 PM

For outdoor next time use rg6.why use rg59?

Rg6 is pure copper and hard to spoiled

Can use wireless transmitter, power supply use solar panel and batt....

with type ur cctv,analog or ip


cable for analog,cvi or tvi


ip cctv cable

use astro wire

Don't bullshit, both RG59 & RG6 also got full copper & CCS

RM 80 per metre?

seriously?

this cable?

This 2 types normally only for DIY! Installer seldom use this.

then use this one?

3 in 1?

I found in lelong this cctv supplier selling 100 metres rg59 cable for rm 159

http://www.lelong.com.my/ccc003-siamese-rg...7-01-Sale-I.htm

CCC003 Siamese RG59 Coaxial + VDE Power cable; 100m roll



RG59 Siamese CCTV cable allows installers to run both the video and power to security cameras using a single cable run.



http://videos.cctvcamerapros.com/surveilla...xial-cable.html



This post has been edited by JimbeamofNRT: May 3 2016, 10:09 PM

Moving on to digital already.

Power over Ethernet, one cable kaotim.

this company selling RG6 305 meter drum for rm 318, good deal?

http://www.lelong.com.my/9116s-belden-usa-...7-01-Sale-I.htm

Sorry, not up to date on prices.

But it seems fine.

You sure you want to put in analog cameras? Maybe it is time to just switch to digital.

as a peasant I kenot be so choosy lah

OK, I understand now.

aku suspek kabel cctv more than 5 meter

This also DIY.
This one

No, not ok. You might as well buy from a reputable hardware shop china made but full copper. This Belden is CCS (Copper Claded Steel)

RG cable also can have HD nowadays. Real Digital HD is HDSDI and non digital have HD Analog and have 3 formats AHD, CVI & TVI.

Is CCS bad?

I think there are pros and cons.

For long runs, then full copper would be recommended to reduce voltage drops.

But to me, all these standards are like a temporary measure until the industry moves totally to digital.

Yes, full copper is for longer runs and voltage is using different wire to power up the camera but since can get full copper at same or lower price, no reason to use CCS.

No, seems TVI & CVI may have 4K soon so analog cable(RG) will never die off! And also less hassle because it is plug and play. For digital still have to deal with IP even though NVR/IPC kits also have plug & play kind of function but installer still prefer RG over Digital because many of them don't even know how to set Ip addresses.

Electrically, if there isn't a long run, full copper doesn't have any advantage over CCS. The signal travels near the surface of the cable (skin effect).

It's called voltage drop.

Ur cables r too long.

Looks like RG59 will survive for a while yet.

There is still so much existing RG59 infrastructure out there.

cool! thanks for the info!

usually this...

Low grade RG59 cable you having. if you use analog

wireless cctv

sometime going to digital isn't really that good, for example like IP cameras, you will always have delays due to network equipment qualityand stability, also because the image captured and directly encoded in the camera then sent the data thru network to the NVR or any storage, either live view or storage playback will always has delay
and if any of the network equipment going down, pretty much shuts off most of the camera operations

big pro for digital is better video, and wiring with network cables are easier, less hassle


network cables has lower length limits compare to RG

RG sent video signal directly to the video recorder, then encode and save, also almost zero delay for live view

analog cctv systems weren't be able to reach 720p HD, so IP Cameras are out


but nowadays got new cctv system like AHD CVI TVI (popular ones are CVI and TVI)

they are like the old analog CCTV, but with different technology, now able to record much higher video resolution from 720p up to 4K, surpass the RG cables limitation,

the great thing for CVI/TVI is that if you are existing CCTV user, you can just upgrade to the CVI TVI without changing/rewiring the cable, you can just use back the old RG cables (but quality must decent), it also got backward compatible for old analog cameras, also capable to add IP camera if you have somes

we usually call these CVI/TVI hybrid recorders
and their price is only slightly more expensive than old analog cctv, pretty much analog cctv are outdated now

cctv systems use RG will be out? No, at least not in next 5-10 years

This post has been edited by squall0833: May 3 2016, 11:40 PM