TrueTime Symmetricom NTS-200 GPS Network NTP Master Clock
Used, Good Condition • 115V or 230V Power
Photos show the actual item for sale
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Description
This is a GPS Master Clock receiver that has RS-232 and Ethernet interfaces. Input voltage is universal 100-240 V AC.
Note that no antenna or rack ears are included (but I have suitable Symmetricom 12V antennae and ears listed separately). If you want one or both added to the package then feel free to email me and I can edit the listing accordingly. Note that this unit does require a 12V antenna such as the Symmetricom 142-614-50 (AeroAntenna AT575/12V) and that the generic 5V types commonly available will not work with this device.
A comparison of the different Symmetricom products is available here.
Full details may be obtained from the Product Manual.
The receiver locks onto a GPS signal when the antenna has a full view of the sky. The status indicator then turns to flashing green - indicating that time has been successfully acquired with no problems detected.
In summary, if you want a GPS Master Clock unit to acquire the correct time and to provide an accurate NTP time reference to client devices over a LAN or WAN then will work for you out of the box.
The unit has been confirmed to operate correctly via the serial console port and the loaded firmware is the latest posted version (ie. Version 8.4). The passwords are set at their default values (operator:mercury).
Manufacturer's Technical Overview
The NTS-200 is a high-performance Network Time Protocol (NTP) server that reports time with extreme accuracy, using the Global Positioning System (GPS) as a synchronization source.
The NTS-200 supports versions 2 and higher of the NTP, RFC-1305, as well as the Simple Network Time Protocol (SNTP), RFC-2030. In addition, the NTS responds to TIME protocol requests, RFC-868.
The main feature of the NTS web interface is its ability to perform setup and control operations from a remote location, using the Internet or TCP/IP LAN. The protocol used is either Telnet or HTTP. The NTS has an RJ-45 Ethernet connector on its NET Port, providing NTP and IP access, and a 9-pin D serial connector for serial input/output.
