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AR78 Ruggedized Time Server

AR 78.webp

The AR78 incorporates numerous features into a singThe AR78 is ruggedized, multi-function GPS Disciplined Rubidium Atomic Clock, which provides accurate time & frequency. le box, including a Rubidium Frequency Standard, an internal C/A code 12 channels GPS receiver, and an input from external 1PPS / frequency.

The various options of the unit include a variety of different frequencies and several Time Codes outputs. The Rubidium Standard functions as a local oscillator and is phase-locked to the GPS / GLONASS 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.

AR77 Data Sheet image

AR78 Data Sheet

The AR78 includes up to two physical LAN interfaces boards, which support UDP / SNMP for management and for NTP (Network Time Protocol). A Precision-Time Protocol (PTP) is available with one of the LAN board. The AR78 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 more. The unit is 19” x 1U rack-mountable encasement.

Key Features

â–¶ Frequency Accuracy : 1E-12

â–¶1PPS Accuracy: 20ns RMS

â–¶Holdover: 1µs/24 hours, 5E-11/month

â–¶Multiple outputs (10MHz, 1PPS, TOD)

â–¶LAN IPV4 (NTP V3, Monitor & Control, DHCP)

â–¶External 1PPS / Frequency input for disciplining

â–¶12 channel C(A) code GPS receiver

â–¶Front Panel Display (Time, Date, BIT and more)

â–¶Monitor & control: RS232, UDP

â–¶SNMP Monitor & Control (Custom MIB)

â–¶Supply Voltage: 90/260 VAC

â–¶Delay Correction for Input & Output

▶Graphic User Interface (GUI) Software for PC​

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​Options:
â–¶ 
Up to 2 channels LAN interface

â–¶IEEE 1588 / PTP Grandmaster

â–¶DDS - Up to 30MHz, 32 bit resolution

â–¶Supply Voltage: 28VDC 

â–¶TOD Format: IRIG-B,NMEA, Have Quick

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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