iTest+® clock instruments

GPS PicoReference

GPS Rb-Based Clock ADEV Stability Analyzer (GPS PicoReference)

The GPS PicoReference™ is a low-cost, high-performance clock ADEV (Allan Deviation) stability analyzer, integratiing the PicoTime-1U and a GPS Rb reference all in one single package. It features a cutting-edge 1ps resolution to compare and measure the phase and frequency stability of a clock, such as a Rb, against the built-in GPS/GNSS Rb reference standard. Clock DUT (Device Under Test) input can range from 1 to 30 MHz. It's ideally designed for crystal, rubidium and cesium clock characterization, clock short term stability and ADEV measurements, and clock calibration applications. 

RELATED PRODUCTS: See our product brochure to quickly compare other product features and performance.

Key Features*

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

Specifications Standard Options
Output
Number
Input
10 MHz & 1PPS
5 each
n/a

9 each

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


Stability (ADEV)
1s
10s
100s

3E-11
1E-11
3E-12

1E-11

3E-12
1E-12

Phase noise (10 MHz)
1 Hz
10 Hz
100 Hz
1 kHz
10 kHz
(dBc/Hz)
-75
-95
-125
-145
-145
-80
-100


Holdover < 1µs/24hr*, < 7µs/week*
*temp profile +2C
Warm-up time @ 25C 15 min, 5E-10   
Clock DUT input
Reference input
1-30 MHz
10 MHz from built-in GPS/GNSS Rb standard 
Power (operating)
Voltage
< 50w after warm-up > 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:

  • GPS Rb-based clock ADEV stability measurement & analysis systems
  • GPS Rb-based clock calibration systems

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