Hikvision DVR Time Issue

I have a hikvision analog dvr ( DS-7204HFI )

I have setup the dvr at my home to install it in my office next week.

i manually setup the clock exactly with my pc's time (which is updated from

windows time server)

and then turned off the dvr , unplugged it and i didnt plugged it for 1 week

after 1 week in my office i observed than dvr's time is not exactly as

same as my pc's time .

it seems than dvr's clock running faster than normal when it is unplugged

please help me what can i do with this issue ??

If you are going to have it online, make it sync the time with NTP.

Absolutely that is the best way. I have mine [dahua] update every 30 min. Rock solid time.

unfortunatly i dont have internet access in my office.

is this issue normal ? how can i avoid it?

In my experience it's normal for the clocks to start running slow by as much as two minutes and more as time goes on. Without auto updating, you'll have to keep an eye on it and manually nudge it every so often.

Electronic equipment made on a budget to a particular market is bound to change it's time being affected bu other devices etc. Hence the introduction of time servers. Originally intended for the computer market.

so my dvr isnt faulty? the only solution is NTP??

dvr's time goes faster when unplugged not slower

so my dvr isnt faulty? the only solution is NTP??

Well... The solution would also be NOT unplugging the DVR, then

is this problem exist in other dvrs? which ntp server (ip and port) do you prefer?

is this problem exist in other dvrs? which ntp server (ip and port) do you prefer?

I never bothered checking time on DVRs that are not connected. I use es.pool.ntp.org because I am in Spain, port 123.

http://www.pool.ntp.org/en/use.html

is there any problem with my dvr's cmos battery ?

Port 123 is the common port on MOST time servers.

Re your CMOS battery, wouldn't hurt to replace it and then monitor how well it keeps time.

dvr Cmos battery is same as pc???

wouldnt it damage dvr software?

it is on the board or i have to remove the board??

If it's a new dvr, don't get involved in something silly. Plug the dvr back in and update the time and leave the thing on and recording like it's meant to do. End of story. Don't complicate matters.

If it's a new dvr, don't get involved in something silly. Plug the dvr back in and update the time and leave the thing on and recording like it's meant to do. End of story. Don't complicate matters.

He's right, leave it alone, I forgot you aren't a technician. If you want really accurate time that much,

get a broadband connection and connect to a NTP. Can't imagine why you wouldn't connect to internet.