Flexible Chassis F³
Modular Frequency Equipment from Oscilloquartz is a highly Flexible approach to economic and efficient custom Frequency management.

A wide range of shelves are available, to which are added a selection of plug-in modules to perform the required Functions.

F³ shelves are based on the 19" standard and are perfectly suited for integration into OEM systems.

• Modular concept with front panel access
• Redundant power supplies
• Alarms and monitoring

Function Modules
An extensive range of Function modules is available to suit most applications involving frequency management or timing of digital telecommunications networks.

These include:

• Quartz, Rubidium, Cesium or GPS sources
• Tracking Oscillator modules
• Frequency converters
• Timing extraction modules
• Input interfaces
• A wide choice of output interface modules
• Signal processing modules and many more

Frequency Solutions
F³ also offers a number of Frequency instruments with standard configurations Solutions including Master or Slaved Generators, Signal Processors, Tracking Oscillators, Distribution Amplifiers, Phase Comparators and TIE Measuring Instruments.

Basic Frame
Each unit is housed in a 19" rack equipped with redundant power supplies and alarms module, making it perfectly suited for stand alone operation or integration into OEM systems.

Each F³ rack has a total useable area of 84 SI (Space Interval), of which 24 SI are reserved for dual power supplies and an alarms module. The remaining 60 SI are at one's disposal to accomplish the desired function, that is to insert the required Function modules.

Alarm Module
F³ equipment often contains a combination of function modules and can thus be viewed as a "Mini System". Consequently, it requires a central alarms unit to centralise the operational and status data from all modules in the equipment.

If a failure is detected, a visual display is given on the front panel indicating a continuous fault, Direct alarm or intermittent fault, Memorised alarm.
A summary of the alarms is also available from optocoupled or relay contacts. This feature greatly simplifies the fault finding process.

Power Supply Modules
Power supply redundancy is considered essential by most users, owing to the importance of not only the modules in the equipment but also the function of the equipment. Each frame in the F³ line holds two power supply converters. These may be either AC/DC and DC/DC or dual AC/DC or dual DC/DC converters.

Function Modules

• Master/Slave Generation Module
  • Wide choice of oscillators including BVA 8600 & Rubidium
  • Very low phase noise
  • User programmable D-PLL
  • Jitter reduction exceeding G.823
• Input Interface Modules
  • Time exctraction for standard Mbit/s input
  • Several sine or square wave input frequencies
  • Automatic switching between dual units
  • Visual and electrical alarms
  • Built-in frequency converter
  • Low output versus input level variation
• Signal Processing Modules
  • Maintains phase coherence between signals within 1/8 UI for G.811 compliance
  • Automatic/manual switching
  • Minimal degradation of signal
  • Dialogue for automatic (or manual) switching between dual or triple units
  • Wide choice of frequency conversion
• Output Interface Module
  • ITU/ANSI compatible
  • Several choice of output types & frequencies
  • Digitally coded outputs
  • Very low phase noise
• Modules for Telecommunications Application
  • Code Generator for E1, DS1 & CC
• General Function Modules
  • AC & DC converters
  • Alarm modules
  • Phase Comparator module with electrical and visual phase limit indicators

Option
On request, the F³ equipment can be supplied in metal cabinets for table top use, or in a convenient carrying case for portable applications, or in special enclosures for use in harsh environments.

The F³ line represents a unique solution for anyone who has a project involving the efficient management of frequency and timing signals.

Below are just some examples from a wide range of standard instruments employing the F³ concept. The F³ line offers all the flexibility and performance features expected for applications such as:

• Synchronization of digital networks according to ITU-T standards
• Frequency reference units for Cellular telephony base stations
• Distribution of standard frequencies in a calibration laboratory
• Frequency management in satellite ground stations
• Frequency distribution in time & frequency laboratories