Rubidium Standards

With a built-in Rubidium atomic resonance-controlled frequency reference, the PM 6685R is the most accurate frequency counter on the market and it has the additional benefit of full portability. ...more

The 908 and 909 are ideal for use in calibration laboratories where there is a specific need to calibrate a wide range of instruments, such as frequency counters and synthesizers. Unlike off-air frequency receivers, the 908 and 909 have excellent short-term stability that enables much faster frequency calibration. ...more

The PM 6681R sets the new standard for measurement and analysis of time intervals, frequency, phase and jitter. For development, calibration, or challenging production test applications, the PM 6681R is the leader. ...more

The Frequency Standards FN-GPS (OCXO) and FN-GPS/R (Rubidium) provide a 10 MHz standard frequency and 2.048 MHz clock output (as option) with high specral purity. The accuracy and stability of the output frequencies are controlled by the timing signals of the GPS satellite system. ...more

Rubidium Frequency Standards uses the property of atomic resonance in a Rubidium Physics Package to control the output frequency of a 10+ MHz Voltage Controlled Crystal Oscillator (VCXO) via a Frequency Lock Loop (FLL). The FLL functional blocks 21 1.0 Vrms Output of an RF Generator, Lock-in Amplifier and the Rubidium Physics Package ...more

RUBIDIUM ATOMIC FREQUENCY STANDARDS - Standard output frequency is 5 or 10 MHz, Short term: Allan Deviation 3x10(-11), Long term: Aging 5x10(-11)/month, Temperature: 3x10(-10), -5 to +50 deg C. ...more

The Frequency Standards FN-GPS (OCXO) and FN-GPS/R (Rubidium) provide a 10 MHz standard frequency and 2.048 MHz clock output (as option) with high specral purity. The accuracy and stability of the output frequencies are controlled by the timing signals of ...more

RUBIDIUM ATOMIC FREQUENCY STANDARDS - Extremely small: 3x3x1.4 inches, Digitally programmable to 1x10(-13),Frequency: 1 Hz to 20 MHz & 50.255+ MHz, Stability over temperature: 3x10(-10), Stability: 1.4x10(-11), 2x10(-11)/day 2x10(-9)/year. ...more

The frequency standards from Pendulum suit the highest demands for stability. All frequency standards offer multiple buffered outputs (5x or 10x outputs of 10 MHz sine). Choose from the low-cost 6688 based on a very-high-stability oven-controlled SC-cut crystal oscillator or the 6689 with a built-in Rubidium atomic clock.  ...more

The GPS-12R frequency standard offers traceable Cesium-like stability at a very attractive price. Synchronized to the GPS satellite system, the GPS-12R provides both short and long?term time and frequency stability, assuring precision and accuracy.  ...more

A Rubidium frequency standard owes its outstanding accuracy and superb stability to a unique frequency control mechanism. The resonant transition frequency of the Rb87 atom (6,834,682,614 Hz) is used as a reference against which an OCXO output is compared. The OCXO output is multiplied to the resonance frequency and is used to drive the microw ...more

The SR625 Frequency Counter is a NIST traceable frequency counting standard for calibarating base stations, transmitters and many other types of communication systems. ...more

The model 2950AR Rubidium Frequency Standard provides three simultaneous outputs of 10MHz, 1MHz, and 100kHz. The 2950AR contains an Atomic Resonance Rubidium Oscillator and is ideal for use as a master oscillator in laboratories and ground stations as well as for test and calibration. ...more

The FS725 integrates a rubidium oscillator (SRS model PRS10), a low noise universal AC power supply, and distribution amplifiers in a compact half-width 2U chassis. It provides stable and reliable performance, with an estimated 20 year aging of less than 5 x 10-9 and a demonstrated rubidium oscillator MTBF of over two hundred thousand hours. ...more

The frequency standards from Pendulum suit the highest demands for stability. All frequency standards offer multiple buffered outputs (5x or 10x outputs of 10 MHz sine). Choose from the low-cost 6688 based on a very-high-stability oven-controlled SC-cut crystal oscillator or the 6689 with a built-in Rubidium atomic clock. ...more

The frequency standards from Pendulum suit the highest demands for stability. All frequency standards offer multiple buffered outputs (5x or 10x outputs of 10 MHz sine). Choose from the low-cost 6688 based on a very-high-stability oven-controlled SC-cut crystal oscillator or the 6689 with a built-in Rubidium atomic clock. ...more

10 MHz, GPS Disciplined, Rubidium Frequency Standards. Rubidium Oscillator locked to GPS satellite signal. Accuracy to parts in 10-13 (Stratum 1 performance). ...more

Pendulum offers a choice of two high-performance timer/counter models; the ultra-fast/ultra-resolution CNT-81 and the CNT-81R with built-in Rubidium timebase. The counters are equipped with GPIB-interface as standard, for use in automatic test systems, or in PC-controlled instrument clusters on the lab bench or workshop bench.  ...more

Many complex electronic systems require a stable, highly accurate timebase. Communication, automatic test and measurement, and precision time-measurement systems all require accurate frequency standards. Traditionally, users have looked to atomic clocks (cesium or rubidium) for high stability and accuracy. With the FS700 LORAN-C Frequency Stan ...more

The PRS10 is an ultra-low phase noise 10 MHz frequency standard that disciplines a crystal oscillator to a hyperfine transition in the ground state of rubidium. The device fulfills a variety of communication, synchronization, and instrumentation requirements. The phase noise of the 10 MHz output is low enough to be used as the reference source ...more

The Pendulum GPS-12R Portable Reference clock is an ultra-stable GPS-disciplined Rubidium reference, targeted for telecommunications application. Its high stability and low noise output, makes GPS-12R the ideal reference source for telecom instrumentation and testers, like SDH/PDH/Sonet Analyzers. ...more

The RFS10E is a 10 MHz rubidium frequency standard with many options as described above. An optional input allows the RFS10E to be locked to a 1 pps signal such as GPS. Also the 1 pps output derived from the rubidium will align itself in time to the 1 pps input to within 150 ns. ...more

The Model 1450A Rackmount Rubidium Standard has three simultaneous sinewave outputs of 10MHz, 1MHz and 100kHz. Up to eight additional sine and up to seven TTL outputs can also be provided. These additional outputs can be one of the standard frequencies or they can be synthesized outputs that are programmable from 100Hz to 30MHz in 1.0e-6 Hz st ...more

As VXIbus systems become more sophisticated and are configured to automatically test high-performance units, the need to improve the accuracy and stability of signal generation and measurement will increase proportionally. To meet these tighter frequency and time performance requirements, the VXIbus-based 3351 provides either a high-stability ...more

Racal Instruments' Model 3352 Rubidium frequency standard module and the 3352-GPS, its GPS-disciplined companion, set a new standard for high density functionality in a single width VXI module. Using ANSI Standard M-Module building blocks, the 3352 series integrates the functions of a Rubidium oscillator and clock distribution together with an ...more