FS710 - Frequency Standard
Stanford Research Systems - SRS
10 MHz AGC Distribution Amplifier: For installations which require many 10 MHz outputs at a remote location from the source, the FS710 AGC Distribution Amplifier offers seven independent outputs from one input.
- 10 MHz distribution amplifier
- 7 output channels
- Drives up to one mile of cable
- 30 dB gain
FS700 Frequency Standard LORAN-C
Stanford Research Systems - SRS
10 MHz LORAN-C Frequency Standard: 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) for high stability and accuracy. With the FS700 LORAN-C Frequency Standard, cesium-clock stability is now available at a fraction of the cost of atomic standards. The FS700 serves as a NIST traceable frequency reference in the US, Europe and Asia.
- 10-12 long-term stability
- 10-10 short-term stability (10 -11 opt. )
- NIST traceable
- Reception throughout most of the northern hemisphere
- Four 10 MHz outputs
- Phase detector with analog output
- 0.01 Hz to 10 MHz TTL output
FS725 - Rubidium Frequency Standard
Stanford Research Systems - SRS
The FS725 integrates a rubidium oscillator (SRS model PRS10), a low-noise 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 x10-9, and a demonstrated rubidium oscillator MTBF of over 200,000 hours.
The FS725 is an ideal instrument for calibration and R&D laboratories, or any application requiring a precision frequency standard.
The FS725 is an ideal instrument for calibration and R&D laboratories, or any application requiring a precision frequency standard.
- 10 MHz and 5 MHz outputs
- 1 pps input and output for GPS synchronization
- 20 year aging less than 0.005 ppm
- Ultra-low phase noise
(<-130 dBc/Hz at 10 Hz) - Built-in distribution amplifiers (up to 22 outputs)
- RS-232 computer interface
- Two status alarm relays
PRS10 - 10 MHz Rubidium Oscillator
Stanford Research Systems - SRS
The PRS10 is an ultra-low phase noise, 10 MHz rubidium-disciplined crystal oscillator. 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 for synthesizers.
- Low phase noise (<-130 dBc/Hz at 10 Hz)
- Time-tags or phase-locks to a 1 pps input
- 72 hour Stratum 1 level holdover
- RS-232 for diagnostics, control and calibration
- 20 year lamp life
SC10 - Quartz Oscillator
Stanford Research Systems - SRS
10 MHz Ovenized Quartz Oscillator: the SC10 is a high stability ovenized 10 MHz quartz oscillator that combines excellent phase noise, Allan variance, and aging characteristics.
- SC-cut crystal for low phase noise
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2 x 10 -12 Allan variance (1 s)
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Low aging (<2 x 10-10/day)
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+15 or +24 VDC operation
- Flexible electronic frequency control
Electronic Test & Measurement 
