Spectratime RBSource-1500

Spectratime RBSource-1500

The RBSource™ is a low-cost, high-performance rubidium reference disciplinable to an external GPS/GNSS standard, all in a compact 19" 1U package. Get a Quote

RBSource-1500 Overview

It uses an auto-adaptive SmarTiming+® technology, disciplining the GPS/GNSS reference up to 100,000 seconds at 1ns resolution, depending on the GPS/GNSS 1PPS reference noise and signal-impairment level.


  • Rubidium atomic clock standard for cross-industry applications
  • Rb atomic clock reference for high-precision lab instruments
  • GPS-disciplined or standalone Rb atomic clock standard for scientific & lab projects
  • GPS-disciplined or standalone Rb atomic clock reference for network timing analyzers
  • GPS-disciplined or standalone Rb atomic clock for time & frequency system calibration
Key Features:
  • Output 10 MHz & 1PPS
  • Input 1PPS from GPS/GNSS
  • Accuracy @ shipment typ. < 5x11 at 25c
  • Tempco +1E-10
  • Temp 0° to 40°C
  • Aging < 5E-11/mth, typ. < 3E-11/mth
  • Holdover < 1µs/24hr*, < 7µs/week* *temp profile +2C
  • Warm-up time @ 25°C 15 min, 5E-10
  • Power (operating) < 25w after warm-up
  • Voltage >25w 85-264VAC
  • Size (WxHxL) 445x300x44mm (1U) | 17.51x11.81x1.73"
  • Weight 4 Kg | 8.82 lbs

Support and Documentation

iReference+ Smart RBSource-1500 / GNSSource-2500 Manual
pdf (2,318KB)
iReference+ Smart RBSource-1500 Spec
pdf (220KB)

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