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New Products

  Date: 18/09/2016

Robust GPS time and frequency System in single enclosure

Smiths Microwave Subsystems has recently announced that TRAK has unveiled the 8836 series tactical GPS Time and Frequency System. The design approach integrates a ground-based GPS receiver module (GB-GRAM), a rubidium oscillator, time and frequency signal generation with control or status circuitry in a compact in a strong enclosure.

Standard outputs include 1PPS, low noise 10 MHz Network Time Protocol (NTP) and two IRIG B outputs over multi-mode fiber. The 8836 can be combined from the internal GPS receiver or from an external GPS 1PPS. When tracking GPS with a TFOM of 3 or better, the discipline algorithm steers the internal oscillator providing 1 PPS time accuracy of < 30 nS to UTC and long term frequency stability of < 1E-12 averaged over 24 hours. In the absence of GPS the unit transitions into hold-over mode providing an accumulated time drift of < 2 ÁS in 24 hours. An Ethernet interface delivers NTP, SNMP v1, v2 and v3, SSH, syslog and telnet. Three GPS Standard Serial Interface Protocol (GSSIP) ports are provided from the GB-GRAM. Two ports are configured to automatically output ICD-GPS-153 messages and the third port is configured to output NMEA-0183 messages.

 
          
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