Is This Master Clock Good
Enough….
Or Do You Need Better Time and
Frequency Standards for Your System?
LBA offers a variety of practical, economical systems for provisioning of ultra-precise master clock timing, synchronizing and reference frequency functions.
Precision timing and synchronization are vital to our internet and wireless infrastructure; efficiently maximizing the use of bandwidth and meshing the flow of network data. Precise timing requirements appear in a variety of other industries, from banking to E911, the healthcare industry and power utilities. Digital television and DTV transmission systems could not function without synchronization to precise time standards. Navigation systems, avionics and military communications are other applications in which precision timing is essential.
Primary reference atomic master clock time standards are huge and costly systems. Fortunately, the precision of these master clocks, like the ones maintained by the US Naval Observatory (USNO), is readily available through the GPS satellite system.
USNO Master Clock
GPS uses 24 satellites in orbit. Each contains four atomic clocks transmitting location information. This data is modulated onto the satellite carrier frequency, repeated at very precise time intervals controlled by the onboard atomic clocks. The GPS system is synchronized and controlled by the USNO. The ground clock GPS receiver, such as offered by LBA, translates these signals, effectively disciplining the local reference to the atomic clocks onboard the satellites. For stability and redundancy the local reference employs very high stability and low phase noise OXCO thermally controlled crystal oscillators.
Thus, GPS disciplined master clock systems can give accurate time to the nanoseconds – at reasonable cost and in small packages. They can provide synchronization virtually anywhere in the world, referenced to UTC time. Because of the highly stable disciplined oscillators, short term stability is adequate to continue precision signals for a defined time in the absence of GPS reception.
LBA systems can even provide GPS accuracy when GPS is unavailable! Once synchronized with GPS, the TAREF300 time standard maintains a rubidium standard accuracy adequate to use as a transfer standard to periodically synchronize other TAREF and FNX-GPS systems in the absence of a GPS reference, such as within shielded spaces or building basements.
TAREF reference clocks can also be used as very precise reference frequency sources for standardizing the outputs of the Schomandl ND and SG series of frequency synthesizers and generators for critical R&D, control and test environments. Similarly, the precision timing references may be inputted to the Kathrein MSK-200 digital TV analyzer for precision measurements of DTV systems.
LBA Precision Timing and Frequency Standard Systems
R.A.M. Taref3 GPS-Disciplined Precise Time Source (front view)
R.A.M. Taref3 GPS-Disciplined Precise Time Source (rear view)
Taref3 Precision Time Generator – This is a general purpose clock by R.A.M. that provides economical atomic timing standard accuracy for television, cable TV and satellite operators, research and network operators. The Taref series is engineered to seamlessly coordinate digital TV bit streams and transmissions, single frequency transmitter systems, multiplexer systems, telecommunication networks and measurement equipment. (Read more here)
R.A.M. Taref30 GPS-Disciplined Precise Time Source (front view)
R.A.M. Taref30 GPS-Disciplined Precise Time Source (rear view)
Taref30 Precision Time Generator - With the stability of a rubidium reference clock, this R.A.M. generator is capable of GPS-independent operation after initial calibration to GPS. Updated at least annually with the Taref300™ as a GPS transfer standard, the Taref30™ eliminates the need for exterior GPS antenna access. It is ideal for interior building installations, shielded secure spaces and other difficult environments. (Read more here)
Taref300 GPS-Disciplined Master Time Source - (more information coming soon)
Schomandl FNX-GPS OEM modular Frequency Standard
FNX-GPS OEM Frequency Standard Module – This Schomandl frequency standard is designed for integration into systems requiring precise time reference or a UTC synchronous time stamp. It incorporates a GPS receiver and 10 MHz OXCO oscillator into a single small, plug-in circuit card. (Read more here)
For orders, quotes, or tech assistance,
use our
Or
Contact Byron Johnson, byron.johnson@lbagroup.com
Call 800-522-4464 or 252-757-0279
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