GPS timing reference

Product Documents
  • Small and lightweight
  • Easy to use programmable output pulse for synchronized end-to-end testing
  • 100 ns accuracy within minutes of startup, 12-channel GPS timing receiver
  • Near-rubidium stability during temporary GPS signal loss
  • IRIG-B serial time code output
  • Standard one pulse-per-second (PPS) output
  • Event time tag (ETT) time stamp with 100 ns resolution

The MGTR-II GPS timing reference is a small, lightweight, field portable, GPS satellite receiver system specifically designed to perform end-to-end tests of line protection schemes with Megger SMRT, MPRT, and PULSAR relay test systems. The MGTR-II provides a precise programmed output pulse (POP), with 100 nanoseconds of resolution. This output pulse provides a trigger synchronisation of two or more SMRT, MPRT, or PULSAR test systems to less than ±1 µ Sec of the Universal Time Coordinated (UTC).

The MGTR-II consists of a 12-channel GPS timing receiver integrated with proprietary microprocessor-controlled timing and interface logic and can track all available GPS satellites. The microprocessor-controlled timing and interface logic derives precise timing information. In addition, the MGTR-II provides a standard 1 Pulse Per Second (PPS), and ASCII serial time message, external event time-tag, an IRIG-B serial time code output signal and, most importantly, a programmable output pulse for performing end-to-end tests.

The unit comes with a 50 foot (15.2 m) long cable and all-weather, high performance, high noise immunity antenna with an integrated low noise preamplifier. The antenna comes with a 4 inch tall antenna mount.

You can control the MGTR-II through a standard RS-232 serial connection and the software provided, which also enables you to control and communicate with the unit.


MGTR Windows® Based Control /Software – Software Version 2.1 is designed for use with MGTR and MGTR-II Megger GPS units. Provides simple user interface to set the Programmable Output Pulse for end-to-end tests. Download the Install zip file to your desktop and unzip to install.

Megger MGTR Control Software Utility
1.5 MB | 18/08/23