Is there a way to monitor the device to make sure its still receiving signal and time updates?

The TM1000A does not have any support for SNMP or any other type of direct monitoring. A script could be setup somewhere that is periodically checking time and looking at the return value of the lookup. If the TM1000A loses its GPS signal, it will return several error flags and the Stratum level will change from 1 to 15. From that return value you could generate a notification.The unit supports configuration through a web page interface. A quick login can tell you if its running (can you log in) and the web page displays the GPS lock status and signal strengths of the top 3 sats. There is an internal HW watchdog on the unit and if the software stops servicing the watchdog, it reboots itself. As long as the GPS signal strength, based on antenna location, is good, these units are very reliable.

what is the oscillator and accuracy if the signal from GPS is interrupted?

This product doesn't serve time if GPS lock is lost. Our TM2000A product does. Specifics of its capabilities can be found on the manufacturers website.

How long is the antenna/receiver cable? What type of connector? Server is in the middle of the building, doubt GPS penetrates well enough.

Cable: RG174, 5m length, SMA male. Antenna is magnetic. Find a phone with GPS, if the GPS on the phone works there is a good chance the antenna will. It only has to be connected to the network as long as the clients can query the device it does not matter where it is located. Manual can be downloaded at http://www.css-design.com/downloads/TM1000A_Manual.pdf

Does this support ntp authentication?

Not that I am aware of... I view this unit as an 'in-house' time reference, so why would authentication be necessary when it is totally under your control? The processor is weak and is not designed to handle large (internet size) traffic.

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⏰ Own Your Time: Never Miss a Beat with TM1000A Precision!

VERSATILE PLACEMENT - High-sensitivity GPS receiver works indoors or near windows—no outdoor antenna needed.
UNRIVALED GPS ACCURACY - Stratum 1 time source ensures millisecond precision for your entire network.
PLUG PLAY INSTALLATION - Compact design with included GPS patch antenna and power supply for hassle-free setup.
INTERNET INDEPENDENT SYNC - Keeps your systems perfectly synchronized even during internet outages.
ENTERPRISE READY RELIABILITY - Rack-mount compatible for seamless integration into professional IT environments.

The TimeMachines TM1000A is a GPS-based Stratum 1 NTP network time server that delivers ultra-precise, internet-independent time synchronization across your entire network. Featuring a high-sensitivity GPS receiver and included patch antenna, it ensures reliable timekeeping even indoors without the need for an outdoor antenna. Compact and rack-mount compatible, it’s designed for seamless integration into professional IT setups, eliminating downtime risks caused by internet failures.

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