![GPS/GNSS Rb/Maser standards](https://d27wgn5g4t3wja.cloudfront.net/img/cfb557f7-d8e7-d400-44be-12090d781ae5/247828.png)
GPS/GNSS Rb/Maser standards
iReference+® - Spectratime
The RBSource™ is a low-cost, high-performance GPS/GNSS disciplinable rubidium reference standard in a compact 1U package. It integrates a smart rubidium clock and uses the patented GPS/GNSS SmarTiming+® technology, disciplining the Rb clock with an auto-adaptive loop time constant of 1,000 to 100,000 seconds, depending on the GPS/GNSS signal quality, at cutting-edge 1ns resolution.