Description The TimeMachines® GPS NTP Network Time Server is a GPS-based NTP server device that supplies accurate time for all computers and time-keeping devices on your 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 TM1000A 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 compact and can be placed anywhere within the network layout, even using our new time server rack mounts. The built-in high sensitivity GPS receiver is able to lock multiple satellites from within multiple buildings or from a window location, eliminating the requirement that an 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 web 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 improved because the network delay of the internet is highly variable, while the local LAN connection is likely a sub-millisecond delay. TimeMachines® GPS NTP server devices are suited for 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. Supports IPv4 and IPv6. Actual Product Size: 4″ x 1⅜” x 4¾” Included with each TM1000A purchase: 5V Power Supply •  GPS Patch Antenna •  Quick Setup Guide •  Rubber Grips Additional TM1000A Documentation and Information: TM1000A Manual TM1000A Brochure TimeMachines Time Server Accuracy Paper Outdoor Antenna Products Configuration Guide Network Time Server Comparison FeaturesTM1000ATM2000BTM2500CTM3000A Source of Time ServedUS GPS SatellitesUS GPS SatellitesUS GPS SatellitesGNSS - US, RU, CN, EU Stratum LevelStratum 1 (GPS)Stratum 1 (GPS)Stratum 1 (GPS)Stratum 1 (GNSS) NTP requests per second