STANFORD RESEARCH SYSTEMS FS725 REPAIR and STANFORD RESEARCH SYSTEMS FS725 CALIBRATION

 
Custom-Cal has a high success rate in the repair of the STANFORD RESEARCH SYSTEMS FS725. A calibration by Custom-Cal is performed by engineers with extensive OEM experience. We have the expertise and the necessary standards to perform the STANFORD RESEARCH SYSTEMS FS725 Calibration, onsite calibration may be available. We specialize in quick turnaround times and we can handle expedited deliveries upon request.

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   STANFORD RESEARCH SYSTEMS FS725   Description / Specification:    
STANFORD RESEARCH SYSTEMS FS725 Rubidium Frequency Standard

The Stanford Research Systems FS725 is a stand-alone 10 MHz frequency standard with an estimated 20-year aging of less than 0.005 ppm. The unit integrates an SRS PRS10 Rubidium Frequency Standard, a universal AC input power supply, and distribution amplifiers in a half-width 2U chassis (3.5" height). The unit's low aging eliminates the need for an external frequency reference in many applications; however units can phase-lock to an external 1 pps GPS signal for ageless performance or periodic calibration as required.
Specifications.

Standard outputs: Two 10 MHz sine waves, one 5 MHz sine wave, one 1 pps with 10 µs width.
1 pps output: 2.5 V into 50 Ω, 5 V into high impedance, 10 µs pulse width.
Sine outputs: 0.5 Vrms, ±10% (1.41 Vpp or +7 dBm).
Phase noise(5 MHz & 10 MHz):
  <-130 dBc/Hz @ 10 Hz,
  <-140 dBc/Hz @ 100 Hz,
  <-150 dBc/Hz @ 1 kHz,
  <-155 dBc/Hz @ 10 kHz.
Spurious: <-100 dBc (within 100 kHz).
Harmonics: <-60 dBc.
Return loss: >25 dB @ 10 MHz.
Accuracy: ±5 × 10-11.
Aging: <5 × 10-11 (monthly, after 1st month), <5 × 10-10 (yearly, after first year).
Allan variance:
  <2 × 10-11 (1 s),
  <1 × 10-11 (10 s),
  <2 × 10-12 (100 s).
Holdover: 72 hour Stratum 1 (1×10-11).
Frequency retrace: ±5 x10-11 (72 hrs off then 72 hrs on).
Settability: <5 × 10-12.
Trim range: ±2 × 10-9 (pot or by 0-5 VDC input), ±0.5 ppm (via RS-232).



 

Standard Calibration $720.00 *
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*This is a Web introductory price for one calibration of the STANFORD RESEARCH SYSTEMS FS725. Price does not in most cases include measurement performance data. Pricing does include NIST traceable calibration and issue of a calibration certificate and calibration label. Pricing may vary slightly due to volume and location of laboratory supporting calibration. Volume pricing may apply. On-site fees may apply depending on logistics, location and volume of work to be completed during the visit.


Related Bench Equipment Terms and Definitions. For a complete list go to our  Terms and Definitions Page.

Averaging
Averaging is a mathematical process to reduce the variation in a measurement by summing the data points from multiple measurements and dividing by the number of points summed.

Fall Time
Fall time is the time required for the amplitude of a pulse to decrease (fall) from a specified value (usually 90 percent of the peak value exclusive of overshoot or undershoot) to another specified value (usually 10 percent of the maximum value exclusive of overshoot or undershoot).

Noise Density
Noise Density is the amount of noise within a defined bandwidth, usually normalized to 1 Hz.

Resolution Bandwidth (RBW)
Resolution Bandwidth (RBW) is the minimum bandwidth over which you can separate two signals and still see them.


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