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TM1000A GPS Network Time Server

by TimeMachines

29 customer reviews

| 4 answered questions

Available from these sellers.

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GPS based SNTP Server
Network Time Server
Stratum 1 time source
Includes GPS Patch Antenna and Power Supply
Available for sale in Europe from Amazon.co.uk

1 new from $299.99

TM1000A GPS Network Time Server

Available from these sellers.

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Product Description

The Time Machines GPS Network Time Server is a simple to use GPS based time server that will supply accurate time for all computers and time keeping devices on the network. By placing a time server on the local network, (S)NTP time packets are provided without requiring systems to go to the Internet to get a Stratum 1 time synchronization. The system uses an active GPS antenna to maintain the current time as broadcast by United States GPS satellites. With this device installed on your local network, there is no longer the worry that if the Internet connection goes down, time synchronization is lost across the network. The unit is small and can be placed anywhere within the network layout. The built in high sensitivity GPS receiver is able to lock multiple satellites from within many buildings or from a window location, removing the requirement that outdoor antenna be installed. Setup and use of this time server is straightforward. Simply connect both the included power supply and the GPS antenna to the base unit and then connect the base unit to the local network. Go to a computer on the network and browse to the device at its default address to enter the software setup within the control box. Set parameters to match your network and the system will start to send out time packets to any device on the system that asks for an update from it. When paired with our digital Power Over Ethernet (PoE) clocks, synchronized time is assured no matter the state of your network, or the state of the internet time server the clocks are pointed to. Accuracy is also improved because the network delay of the internet is highly variable, while the local LAN connection is likely sub-millisecond delay. TimeMachine GPS based time servers are suited to any application where coordination of events at multiple locations is required. Used by Education, industrial facilities, military installations, public safety command rooms, government, broadcasting, and hospitals.

Product Details

Product Dimensions: 5 x 4.2 x 1.3 inches ; 1.6 pounds
Shipping Weight: 2 pounds
ASIN: B002RC3Q4Q
Item model number: TM1000A
Average Customer Review: 4.8 out of 5 stars See all reviews (29 customer reviews)
Amazon Best Sellers Rank: #6,458 in Electronics (See Top 100 in Electronics)
- #17 in Electronics > GPS & Navigation > Vehicle GPS > Trucking GPS

Product Warranty:

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Date first available at Amazon.com: July 6, 2011

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Customer Reviews

4.9 out of 5 stars

5 star		90%
4 star		10%
3 star		0%
2 star		0%
1 star		0%

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Most Helpful Customer Reviews

4 of 4 people found the following review helpful

Almost perfect

By Jonathan Gaynor on January 25, 2014

As everyone else has stated, this unit is great. It's in a class by itself in terms of price. Small and medium sized businesses NEED reliable NTP, but have a really tough time justifying the 5 figure starting prices of most professional NTP systems. These units afford you semi-reliable stratum 1 time that is not affected by flaky internet time servers or latency. Why 4 stars instead of 5? 2 reasons:

1. I have three of these, and I cannot get them to stop bouncing their ethernet interfaces once every few minutes. Hard-coding 100/full seems to be the most stable, but even then I lose them for about 5 seconds once every 2 or 3 minutes. I have tried these on Cisco 2248TPe FEXes, 3750Xs, 6500s (multiple modules) and 3500s. No change. Even with this incredible annoying behavior, I still consider this a 4-star device. Just don't rely on ONE, buy a few and point your stratum 2 servers at all three of them. At least 2 will be available at any one time.

2. It is *extremely important* to realize that these are time SOURCES, not TIME SERVERS. They cannot handle being queried by more than a few devices at a time. They need to feed other time servers, not clients directly. Their CPUs are very limited, and refreshing their management web interface 4 or 5 times in a row is all that's required to reboot them. As a result we protect ours with ACLs that only allow access from management networks and the Stratum 2 devices they feed.

Keep these limitations in mind and you can save yourself tens of thousands on hardware and support/licensing.

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4 of 4 people found the following review helpful

Great device for the price

By David G. Gerber on July 22, 2013

Verified Purchase

This device was easy to set up. I ran the sensor through the hole in the wall and attached it to metal flashing on the outside and it worked like a charm. The sensor is magnetic and weather proof. I Was unable to get a signal inside my building (strip mall with cinder block) so I would not count on it working with out the sensor outside, but it was easy to pass the cable through the hole for my security camera wire. I have no real criticism, just a suggestion, on the setup page you could display the time signals. It clearly says you are locked and displaying these has no real function, but it would be cool to look at and it is a time server. Keep up the good work and thanks.

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4 of 4 people found the following review helpful

Neat little box

By jm on July 26, 2013

Verified Purchase

What can I say, it just works.

The processor is a bit slow, and if you need super accuracy ( >10ms ) then this isn't the unit for you, but for most applications.... it's great.

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2 of 2 people found the following review helpful

Great product!

By T. Conrad on October 24, 2011

Verified Purchase

As another reviewer noted, very easy to use. The folks who designed it thought it through. A decade ago, I managed a few computers for a small non-profit group and had some computer clocks 6-8 hours off. Back then not so easy to fix. Today, with Win XP, Vista or 7, Windows has an Internet Time option. Which is great if you are connected to the Internet when the update is scheduled. If not, no update. The TM1000A performs the same function, on a local basis. No Internet needed. Simple to set up. Place the antenna near a window, and the base unit near your computer. Plug in power. The local network connection can have several forms, depending on your particular configuration. (the manual, download from css-timemachines.com has far more info) The easiest is just a crossover cable (Amazon has several) between the computer and the TM1000A. Point your browser to 192.168.1.15 to connect, make any needed changes and you are ready to go. If your Internet is via USB modem (cable or DSL) you are done. Then, right click on the time in the lower right corner of the diplay, click on "Adjust Date/Time" select the Internet Time tab. In the Server field, enter 192.168.1.15 (if you didn't change it) and Update Now. In a few seconds, you should see a success message. Without any external connection.

The unit will not work with Streets and Trips, there are other programs that will display satellite data, and can help with antenna placement. The 1000A can output the GPS 1 pulse per second for calibrating lab equipment. It has a wall power module, uses about 5 watts, so will cost about 10 cents a week to run, depending on your power company. It takes about 2 minutes to get initial "lock" on the satellites.

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3 of 3 people found the following review helpful

Bang for the buck.

By steven berg on June 10, 2013

Verified Purchase

For only $300 you get a statum 1 time server. The closest you will get is around $3,000 to do the same thing that this one does. BUY IT!

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2 of 2 people found the following review helpful

Works Well

By B. Jones on February 16, 2013

I ordered this time server when our Primex wireless clock system went belly up the second time in a year. After setting up a an ethernet network for the POE clocks in our facility I needed some type of a time server. I installed this timemachines time server and after a few minutes of fiddleing with the IP address I had my clocks working perfectly with the correct time. This unit is excellent value for the price. Not being an IT person I could use better IP addressing instructions. Our ethernet network for clocks and enviromental systems is separate from our computer network. POE clocks are the way to go and ethernet makes a stable easy to use and inexpensive network. With a time server no internet connection is necessary.

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2 of 2 people found the following review helpful

inexpensive NTP server

By RayW on May 4, 2013

Verified Purchase

works with Windows Servers, Red Hat, PCs and Cisco network equipment. Get the Time Machines Precision Digital POE Clock to go with it so you can see the time and know it is working fine, rather than check all the logs.

if you can set up a wireless router (via web interface) you can set this up.

antenna needs view of the sattelite, and can take 15 minutes to lock on, but since you will never move it, not an issue

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See all 29 customer reviews (newest first)

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Most Recent Customer Reviews

Five Stars

Performs as expected, no problems,

Published 7 days ago by E. Gleichmann

A great solution and great price

Has functioned flawlessly. A great solution and great price.

Published 1 month ago by Terrell Elliott

Great Time Keeper

Great time keeper for our network. I look forward to buying their other clock product to help make our edit bay more professional.

Published 4 months ago by Brooke S.

Great, but GPS not UTC time

This is a very good product that just works out of the box. I use it as a network time source and there are no issues with updating. Read more

Published 5 months ago by David A.

Perfect, but DHCP needs to be enabled.

Awesome except one little thing. It could have had DHCP enabled for better set up.

Published 7 months ago by Jason E. Dorfler

Works Great.

Easy to set up. I have a network that has Zero access to the internet. Therefore, I needed a time server. Read more

Published 9 months ago by Buddy Davis

This is an excellent device that does just what it's supposed to do

Hooked it up as soon as it arrived, and even on the indoor antenna it locked on within a minute. I've never had a new GPS receiver acquire that fast. Read more

Published 10 months ago by Philip R. Karn Jr.

Cost-effective, turn-key time syncing solution!

This thing is exactly what I was looking for in an NTP appliance. Easy setup, great compatibility, incredible accuracy, small footprint, and appliance level of reliability. Read more

Published 15 months ago by Boelte-Hall

Five Stars

Performs well for the money.

Published 15 months ago by Stephanie Heck

Very impressed with the unit

I am quite amazed at the sensitivity of the antenna that came with my TM1000A GPS. I am located about here: 39.972632, -105. Read more

Published 16 months ago by AreThree