Protempis Thunderbolt E GPS Disciplined Clock

Protempis Thunderbolt® E GPS Disciplined Clock is Trimble’s latest offering for GPS synchronization devices targeting the wireless infrastructure. This fifth-generation GPS clock combines a 12-channel GPS receiver, control circuitry, and a high quality double-ovenized oscillator on a single board, providing increased integrity and reliability at a lower size and cost. The Thunderbolt E's level of integration makes it a perfect solution for precise timing applications in the wireless industry. Among its uses are synchronizing the E911 positioning infrastructure, and providing precise time and frequency for WiMax and LTE-TDD applications, along with digital broadcast applications. The architecture is comparable to systems currently used to maintain the tough CDMA, WiMax, and LTETDD holdover specification. The Thunderbolt E is available in its enclosure, or as an OEM board.

The Thunderbolt E GPS clock outputs a 10 MHz reference signal and a 1 PPS signal with an overdetermined solution synchronized to GPS or UTC time. The PPS output accommodates applications requiring sub-microsecond timing. The Protempis T-RAIM (TimeReceiver Autonomous Integrity Monitor) algorithm is used to monitor satellites to ensure signal integrity. Matching the Thunderbolt E GPS Clock with the Protempis Bullet™ antenna creates a system that provides reliable performance in hostile R/F environments. The system can be easily calibrated for different cable lengths. The high level of integration and volume production techniques make the Thunderbolt E GPS Disciplined Clock an extremely cost-competitive timing solution for volume synchronization applications.

General...................L1 frequency, CA/code (SPS), 12-channel continuous tracking receiver Update rate.......................................................................1 Hz PPS accuracy.....................UTC 15 nanoseconds (one sigma) 10 MHz accuracy....................1.16 x 10 - ¹² (one day average) 10 MHz stability.............................................See graph below Harmonic level .........................................–40 dBc/Hz max Spurious ..................................................–70 dBc/Hz max Phase noise ........................................10 Hz –115 dBc/Hz 100 Hz –130 dBc/Hz 1 kHz –135 dBc/Hz 10 kHz –145 dBc/Hz 100 kHz –145 dBc/Hz Environmental Specifications Operating temp ......................................–20 °C to +75 °C Storage temp .........................................–40 °C to +85 °C Operating humidity .......................95% (non-condensing)