NTP: hardware atomic clock

[David_246]

Hi,

NTP is not working great at our site. The time is synchronised over multiple DMZ to the internet and therefor errors now and than.

Therefor I was hoping to buy an Atomic clock. Unfortunetly I can nowhere find any info anymore about atomic clocks (for a reasonable price). I know they excist as I helped implementing one about 4 years ago, but can't find out where we bought it anymore (new company).

Does anyone have any info about prices, where to buy, links ?

I am looking for a clock to directly attach to my HP9000 server and let NTP synchronize to that clock only.
Any help will be much apreciated !!!


Regs David

[Robert-Jan Goossens · Accepted solution]

Hi David,

We use a GPS ntp server, prices are better.

http://www.ntp-systems.com/products.asp

Hope it helps,
Robert-Jan.

[Leif Halvarsson_2]

Hi,
Are you searching for a "real" atomic clock (I belive HP is one vendor). As I understand they are very expensive. An alternative is a radio or GPS clock.

[melvyn burnard]

HP used to make Atomic Clocks, but that was part of the Test and Measurment Group which has become Agilent.
You would need to check if they still do such a product, but I would also guess you would need a large cheque book.
There are a lot of newer resources available for such time synchronisation, including Radio clocks, GPS signals etc, which may be a lot easier and cheaper to use.

[David_246]

Hi,

A GPS indeed might be better, thinking of it now we used this indeed before.

Robert-Jan, Which one do you use. Do you have indicating prices? I can't find them on the web (else I will call, don't spend to much time on it). I was thinking of the NTS-150 (cheapest:). Do you need an extra Antenne for it?

Can you please let me know as much as you know of the benefits or problems you encountered ?

Your help will be much apreciated (and rewarded :)

Regs David

[Robert-Jan Goossens]

Hi David,

We use a truetime nts-90, and yes we use an extra antenne on the roof of the building. I can't remember the price we payed, best to call local supplier.

Regards,

Robert-Jan.