Frequency Reference Unit0 pages
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."
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