The C-FTRM from TRAK Microwave is a tactical Frequency and Time Reference Module in a small 2.40” x 2.66” form factor. The module includes a 50-channel GPS receiver, low g-sensitivity 10MHz double-oven crystal oscillator, plus time and frequency generation circuitry providing reference outputs of 10MHz, 1 PPS and Time of Day (TOD).
The C-FTRM can be synchronized from the internal C/A code GPS receiver, or from an external GPS 1 PPS signal. The external GPS is the primary reference, with automatic switching to the internal receiver if no external 1 PPS signal is present. This device provides fast time-to-lock of <10 minutes from power-up. While tracking GPS, a proprietary discipline algorithm maintains time synchronization to better than ±100 ns to UTC. In the absence of a GPS reference, the holdover mode provides an accumulated time drift of less than 10 µs in 24 hours after being synchronized to GPS for four hours. Control, Status and Time of Day information are available through an RS-232 interface.
The ruggedized design and construction of this device is well suited for vehicle and manpack radios, SatCom On The Move (SOTM) terminals, UAV data links and other platforms operating in harsh environmental conditions.