Spectratime GRClok-1500 Rubidium Clock

GRClok-1500 Oscillator Overview

The GRClok-1500 is a smart, low cost, compact rubidium oscillator with an optional integrated GPS / GNSS receiver, using u-Blox's advanced 50-channel LEA-6T GPS receiver with a 6-position engine and anti-jamming technology.

It's GNSS ready to support multi-navigational satellite system receivers, including GPS, Galileo, GLONASS, IRNSS, and BDS / COMPASS. It is compatible to the Stanford PRS10 model and fits in a compact 1U chassis. The LNRClok uses the patented, adaptive SmarTiming+ technology, disciplining the GPS/GNSS reference at 1ns resolution, providing a host of complex time and frequency features in one package solution, while achieving state-of-the-art performance, reliability and extended lifetime.

GRClok-1500 Features & Applications

Key Features

Specifications	Standard	Options
Output Input	10 MHz	2.048, 4.096, 10.23 MHz 1PPS from GPS/GNSS or GPS/GNSS receiver inside
Accuracy @ shipment	typ. < 5x11 at 25c
Tempco Temp Aging	+1E-10 -10 to 55C < 5E-11/mth, typ. < 3E-11/mth	-32 to 60C < 3E-11/mth or 2E-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) -75 -95 -125 -145 -150
Holdover	< 1µs/24hr, < 7µs/week < 3µs/24hr < 7µs/24hr* temp profile +2C temp profile within 20C **temp profile within 40C
Warm-up time @ 25C	12 min, 5E-10	< 5-7 min(a) 25 min(b)
Power (operating) Voltage Warm-up	< 7-14W 24V < 38W	< 40-50W(a) < 24W(b) +2W with GPS/GNSS inside 12V < 30W
Size (WxHxL)	128x95x38.1mm \| 5.03x3.74x1.5"
Weight	500 g \| 1.1 lbs
Vibration sensistivity	see spec
Low g sensitivity	n/a

Applications

It is typically used in the following applications:

Mobile & wired telecom/datacom infrastructures
Military communications & surveillance systems
High precision instruments
Time & frequency systems
Financial trading systems
Big data timing systems
Navigational & positioning systems

Resources

Datasheets
iSync+ Smart GRClok-1500 Spec More Info Smart Rubidium Oscillator & Optional GPS/GNSS-Integrated Receiver (GRClok-1500)	pdf - 591 KB Tuesday, October 20, 2020 [ Permalink ]
Technical Notes and Briefs
GNSS LEA-6T and LEA-M8T in iSync devices	pdf - 870 KB Tuesday, September 24, 2019 [ Permalink ]
iSource+ Rubidium Clock Lifetime and MTBF Data More Info LPFRS / RMO / STARLPRO / LNRClok / GRClok Rubidium Clock Lifetime and MTBF	pdf - 256 KB Saturday, November 1, 2014 [ Permalink ]