Timing Reference Unit

The TRU is a state of the art, high-precision time/frequency standard capable of outputting five isolated IRIG Time of Day and 1PPS reference outputs. The TRU uses an internal GPS receiver to control a precision oscillator with accuracy up to 1 x 10-12 and excellent short term stability.

The TRU incorporates a high-sensitivity 12 channel SAASM GPS receiver, incorporating the latest advances in GPS anti-spoofing technology.

Dual Ethernet ports are used for both monitoring/control of the FRU using Simple Network Monitoring Protocol (SNMP) as well as providing Network Time Protocol (NTP) to clients.

A Brandywine supplied user application may also be used to provide a Graphical User Interface to the TRU.

The TRU is available is a number of configurations to support specific applications. A

Mobile Application version features a special vibration isolated oscillator that provides isolation of the reference source from portable generator induced phase noise. The High Performance version uses a rubidium oscillator.

A C/A code GPS receiver is available for non-military applications.


  • Ultra-stable GPS Disciplined Timing Reference
  • 5 buffered IRIG outputs
  • 5 buffered 1PPS outputs
  • 10MHz frequency reference out
  • 1U chassis
  • Timing accuracy to 1 x 10-12
  • Dual Port NTP Server

Product Specifications
Product Data Sheet

For more information please contact us


About Brandywine Communications

Brandywine Communications Inc. offers superior products to the time and frequency marketplace. Our mission is to provide the finest equipment coupled with excellent before and after sale service.

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Brandywine Communications
Ultra-Precision Time & Frequency

1153 Warner Ave
Tustin, CA 92780
Phone: +1 (714) 755-1050