iReference+® GPS/GNSS Rb/Maser standards

RBSource-1500

GPS/GNSS-Lockable Rb Source (RBSource-1500)

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. 

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Key Features*

*See or download the full Spec in the Documents page. 

Specifications Standard Options
Output
Number
Input
10 MHz & 1PPS
9 each
1PPS from GPS/GNSS 
10.23 MHz
17 each

Accuracy @ shipment typ. < 5x11 at 25c
Tempco
Temp
Aging
+1E-10
0 to 40C
< 5E-11/mth, typ. < 3E-11/mth


< 3E-11/mth or 2
E-10/yr
Stability (ADEV)
1s
10s
100s

2E-11
8E-12
3E-12

1E-11

3E-12
1E-12
Phase noise (10 MHz)
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
(dBc/Hz)
-80
-100
-125
-145
-145

-100

-130
-145
-155
-155
Holdover < 1µs/24hr*, < 7µs/week*
*temp profile +2C
Warm-up time @ 25C 15 min, 5E-10   
Power (operating)
Voltage
< 25w after warm-up > 25w 85-264VAC  
Size (WxHxL) 445x300x44mm (1U) | 17.51x11.81x1.73"
Weight 2.2 Kg | 4.85 lbs

Applications

It is typically used in the following applications:

  • Rudidium 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

Documents

Software

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