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FDU 240 : 24 Output Frequency Distribution Unit

The FDU-240 Frequency Distribution Unit is a high quality, precision frequency distribution platform offered with a number of functional variants.  Applications include reliable signal distribution in systems designed for satellite ground stations, secure military communications and range timing.

The FDU-240 Frequency Distribution Unit is a high quality, precision frequency distribution platform offered with a number of functional variants.  Applications for the FDU-240 include reliable signal distribution in systems designed for satellite ground stations, secure military communications and range timing.

The FDU-240 base unit model has twenty-four low phase noise sine wave outputs available at the rear panel via BNC connectors in response to one (Ref A) or optionally two (Ref A & Ref B) signal source reference inputs feeding the transfer switch.

For enhanced phase noise performance, an optional clean up oscillator is positioned between the rear panel inputs and the reference inputs of the transfer switch. An optional clean up oscillator(s) may be installed between the reference Inputs A and B or just Input A depending upon preference, application and cost-performance trade offs. When fitted with the optional clean up oscillator, the stability of the output equals that of the input by disciplining the clean up oscillator to the reference input.

A three-position front panel switch facilitates the manual selection of either reference A or reference B or an automatic selection mode.  When the automatic AUTO mode is selected the AUTO indicator will be illuminated and Input A will be used by default if it is viable.  Should Input A fail then Input B will be chosen automatically.

Front panel indicators show the status of the inputs and which input has been selected along with a power status indication.

Each of the twenty-four outputs is continually monitored and should an output fail for any reason, then a group alarm Fault indicator will illuminate and trigger a rear panel discrete Fault alarm signal that may be used by external equipment to modify the reference and output signal routing and selection.

FDU 240 - 24 Output 5MHz/10MHz Low Phase Noise Frequency Distribution Unit

FDU 240 datasheet

fdu240_ds5.pdf

Features

  •    5 MHz or 10 MHz low phase noise outputs

  •    One or two reference frequency signal inputs A or A & B

  •    Optional cleanup oscillators for input references A, B or both

  •    Automatic reference changeover with reference select input option

  •    Fault discrete inputs for external reference selection

  •    Compact 1U, 19” rack mount with front panel status indication


Signals


  •   24 discrete, fault tolerant and fully monitored sine wave outputs on BNC connectors

  •   Two 5MHz or 10MHz reference signal inputs, A,B or both

  •   Fault status indication and fault driven reference changeover

FDU240 - 10MHz Frequency Distribution Unit FDU240 - 10MHz Frequency Distribution panel Military 10MHz frequency distribution systems Submarine10MHz frequency distribution systems Satcom 10MHz frequency distribution systems