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Frequency Reference Unit

Frequency Reference Unit
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brandywine communications Frequency Reference Unit (FRU-SAASM) Features: • Ultra-stable GPS Disciplined Frequency Reference • 10 Independent 10MHz outputs • 1U chassis • Meets MIL-STD-188-164A stability requirements • Frequency accuracy to 1 x 10-12 • Dual Port NTP Server The FRU is a state of the art, high-precision frequency standard capable of outputting ten isolated precision 10MHz frequency reference outputs. The FRU uses an internal GPS receiver to control a precision oscillator with accuracy up to 1 x 10-12 and excellent short term stability The FRU meets the frequency stability requirements of MIL-STD- 188-164A for SHF terminals. A particular feature of the FRU is the ultra-high isolation (>100dB) between the 10MHz outputs, eliminating interaction between 10MHz outputs when they are loaded/unloaded. The FRU incorporates a high-sensitivity 12 channel . Dual Ethernet ports are used for both monitoring/control of the FRU using Simple Network Monitoring Protocol (SNMP) as well as providing Network Time Protocol (NTP) to clients. A Brandywine supplied user application may also be used to provide a Graphical User Interface to the FRU. The FRU is available is a number of configurations to support specific applications. A Mobile Application version features a special vibration isolated oscillator that provides isolation of the reference source from portable generator induced phase noise. The High Performance version uses a rubidium oscillator." A"SAASM"GPS"receiver"is"available"for"military"applications." "

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brandywine communications FRU Technical Specifications Input: GPS Antenna Input Connector 1PPS input Connector Level Impedance HAVEQUICK Input Level Impedance Outputs: 10MHz outputs No of Outputs Frequency Accuracy Amplitude Harmonics Non Harmonic Isolation 90 VAC to 260 VAC <15 Watts. Dual Redundant Power (opt) Control and Status: Type 10/100BaseT Ethernet No of Ports 2 independent Protocol IPV4, IPV6 SNMPv1, V3 (opt) NTPV3, V4 (opt) Graphical Interface BWC Application GPS Receiver Receiver Type Frequency Satellite Code Receiver Type Pos. Accuracy Warm start GB-GRAM L1, L2 Dual Frequency...

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