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AR76 Multi-Functional NTP/PTP Network Time Server

AR76 Image

AccuBeat’s AR76 is a multi-function NTP/PTP GPS Disciplined Time Server that incorporates numerous features into a single box, including an on-board Rubidium Atomic Clock, an internal C/A code 12 channels GPS receiver, and an input from an external 1PPS or frequency source.

The various options of the unit include a variety of different frequencies and several Time Codes outputs such as IRIG. Have Quick, NMEA. The Rubidium Frequency Standard functions as a local oscillator and is phase-locked to the GPS or to external inputs. All outputs are derived from the Rubidium Clock, which maintains accurate time and frequency when GPS or other inputs are interrupted or lost.

The unit includes up to three physical LAN interfaces boards, which support UDP/SNMP for management and for NTP (Network Time Protocol). The three LAN boards can be used for three different networks (with three different IP network addresses), or for two networks where the 3rd LAN board is reserved as a redundant back-up. Precision-Time Protocol (PTP) is (optionally) available on one of the LAN boards. The AR76 provides multiple outputs: 10 coax outputs, two fixed (10MHz and 1PPS) and 8 configurable outputs which can be selected from 1PPS, 10MHz, and more.

Additional outputs are available on the D-Type connector including differential RS422 outputs, TOD (Time Of Day) outputs with several standard protocol like NMEA, IRIG B etc and others. The unit measures 19” x 1U in a standard rack-mountable encasement.


AR76 can be supplied with AccuBeat’s proprietary Anti-Jamming and Anti-Spoofing technology providing additional protection in cases of GPS denial. For further details, please contact us directly.

AR76 Data Sheet pdf

AR76 Data Sheet

AR76A back Image

Key Features

▶ Frequency Accuracy : 1E-12
▶ 1PPS Accuracy: 20ns RMS
▶ Holdover: 1µs/24 hours, 5E-11/month
▶ 20 outputs (10MHz, 1PPS, TOD)
▶ LAN IPV4 (NTP V3, Monitor & Control, DHCP)
▶ Full support for NTP/PTP Networks
▶ External 1PPS / Frequency input for disciplining
▶ 12 channel C(A) code GPS receiver
▶ Front Panel Display (Time, Date, BIT and more)
▶ Monitor & control: RS232, UDP
▶ Supply Voltage: 90/260 VAC
▶ Delay Correction for Input & Output


▶ Up to 3 channels LAN interface
▶ SNMP Monitor & Control (Custom MIB)
▶ IEEE 1588 / PTP Grandmaster
▶ DDS – Up to 30MHz, 32 bit resolution
▶ Supply Voltage: DC or DC&AC
▶ Graphic User Interface (GUI) Software for PC
▶ P(Y) code SAASM GPS receiver


▶ Test Equipment
▶ Telecommunication
▶ Cellular Base Stations
▶ Scientific Equipment
▶ Secure Communication
▶ Mobile Radio Base Stations

Contact us to discuss with one of our experts the best off the shelf or fully customized timing solution for your next project.

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