
AR79/AS79
Accurate Time & Frequency Server

GNSS-Disciplined Rubidium
The AR79/AS79 is a multi-function GNSS Disciplined Rubidium Atomic Clock, which provides accurate time & frequency. The AR79/AS79 incorporates numerous features into a single box, including a Rubidium Frequency Standard, an internal C/A code 12 channels GPS receiver and external 1PPS input. The Rubidium Standard functions as a local oscillator and is phase-locked to the GPS or to external input. All outputs are derived from the Rubidium Clock, which maintains accurate time and frequency when the GNSSor other inputs are interrupted.
The AR79/AS79 extensively supports the evolving needs for broadband access services delivery, including high throughput, flexible management capabilities, and a high degree of scalability and flexibility to cater for future requirements and technology trends. The AS79 offers advanced Quality of Service (QoS) features including classification and mapping based on layer 1 through layer 4 attributes, rate limiting per service, with highly flexible scheduling, queuingand shaping options.
Product Highlights
1E-10/month
Long Term Stability
20ns RNS
1 PPS Accuracy
113 dBc/Hz
Phase Noise
Performance (Rubidium Mode) | Frequency | Standard | _1 | Text | _3 |
|---|---|---|---|---|---|
Time (1PPS) | 1PPS accuracy | Discipline | 20ns RMS | Contact Us | |
Free running | 1μs / 24 hours (typical)
After 24 hours of disciplining | ||||
Frequency | Frequency Accuracy | ≤ 1E-12 (Disciplined to GPS or to external 1PPS) | |||
Long Term Stability (Free running Rubidium) | ≤1E-10 / month | Contact factory
| |||
Short Term Stability (ADEV) | 3E-11 @ 1s
5E-12 @ 100s | Contact factory
| |||
Temperature Stability | ±3E-10 over -20°C to
+65°C | Contact factory | |||
Standard | Improved | Ultimate | |||
Phase Noise (@ 10MHz) | ≤-114dBc/Hz @ 10Hz
≤-140dBc/Hz @ 100Hz
≤-146dBc/Hz @ 1KHz
≤-147dBc/Hz @ 10KHz | ≤-113 dBc/Hz @ 10Hz
≤-141 dBc/Hz @ 100Hz
≤-152 dBc/Hz @ 1KHz
≤-156 dBc/Hz @ 10KHz
Integrated phase noise (10Hz to 1MHz):
≤-94dBc | Contact Us
| ||
Harmonics | ≤ -45 dBc
| ||||
Spurious | ≤ -90 dBc @±100KHz | ||||
Warm-up time | Rubidium Lock < 4 minutes 5E-11 within < 60 minutes 1E-11 within < 4 hrs
1E-12 within < 24 hrs
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AS79 Key Features
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AccuBeat’s proprietary Anti Spoofing solution
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Frequency Accuracy: 1E-12
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1PPS Accuracy: 20ns RMS
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Holdover: 1μs/24 hours, 1E-10/month
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20 outputs (10MHz, 1PPS, TOD)
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12 channel C(A) code GPS receiver
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Dual AC Power supply 90-260 VAC
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LCD Front Panel Display showing TOD, synch status and more
AS79 Key Applications
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GNSS Denied Scenarios
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Power Utilities
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Communications Networks
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Financial Services
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Server Networks
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Enterprise Networks
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Satellite Ground Stations
